ISO 15926-4:2007

Spreadsheets

The number of reference data items in each speadsheet is given in parenthesis.


activity.xls

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abandoning
Giving up by leaving, withdrawing, ceasing keep or operate, often because unable to withstand threatening dangers
abating
Reducing in value, degree, or intensity
aborting
Terminating prematurely
abrasing
Wearing down or rub off, especially by friction
absorbing
Sucking up or take up by various means for example by capillary, osmosis, solvent, or chemical action
accelerated underreach protection
Unit protection using telecommunication, generally distance protection, with underreach protection at each section end and in which a signal is transmitted when a fault is detected by the underreach protection
accelerating
Increasing the velocity
acceptance testing
Electrical rotating machine testing that is a contractual test to prove to the customer that the machine meets certain condictions of its specification
accepting
Receiving with consent or give admittance or approval to
accommodating
Providing with something desired, needed, or suited (as a helpful service, a loan, or lodgings)
according
Agreeing by granting as suitable or proper
accounting
Acting by furnishing a justifying analysis or explanation
accumulating
Increasing or growing in quantity or number
achieving
Attaining as the result of exertion
acid and earth treatment
To purify as defined in ISO 1998 definition 3-037
acid corrosion
Corroding due to low pH in the fluid which is in contact with the material
acid gas removing
Gas treating intended to remove sulphur containing gaseous components
acidifying
Making acid (as by the addition of an acid), or convert in an acid
acidising
Acidifying by charging (an oil or gas well) with hydrochloric acid for dissolving the lime out of the sand in order to increase production
acidulating
Acidifying by making acid, especially slightly acid
acknowledging
Agreeing by showing by word or act that one has knowledge of and agrees to
acquiring
Getting or coming in possession, control, or power of disposal of, often by unspecified means
actagene conversation
Performative conversation starting with a request
acting
Activity of carrying out a process of change or alteration
activating
Increasing the state of being active
actuating
Increasing the state of being in mechanical action or motion
acylating
Adding an acyl group to
adapting
Changing by making suitable or fit for a new or different use or situation by means of changes or modifications
adaptive controlling
Controlling with a secondary control whose characteristics are time-variable and result from the optimisation of some operational conditions
adding-acting
Acting involving joining, annexing, or uniting so as to bring about an increase in number or size or to form an aggregate
adding-computing
Computing the sum of a set of numeric values
additive depleting
Depleting by lessening in number, quantity, content, force, vital power, or value
adhering
Sticking together by intermolecular forces, particularly closely contiguous surfaces of neighbouring media
adhesive bonding
Bonding using an adhesive substance
adjoining-acting
Joining by adding or attaching
adjoining-being
Lieing next to or in contact with one another
adjusting
Changing by bringing in a more satisfactory state
administering
Managing the affairs of
admitting
Allowing entrance or access to
adsorbing
Taking up and holding by physical or chemical forces of molecules of gases, of dissolved substances, or of liquids by the surfaces of solids or liquids with which they are in contact (distinguish from absorb)
advanced controlling
Controlling using modern techniques and scientific methods
advertising
Calling public attention to especially by emphasizing desirable qualities so as to arouse a desire to buy or patronize
advising
Informing by giving advice, information, or notice to
aerating
Process of supplying or impregnating (as the soil or a liquid) with air
aerobic digesting
Biotreating by which organic matter in sludge is decomposed by aerobic bacteria with the release of a burnable mixture of gases
affirming
Declaring as a fact
ageing
Treating by inducing certain changes in structure and physical or mechanical properties as if the item is older, by causing that an alloy remains at an appropriate temperature for a predetermined period of time.
agglomerating
Collecting in a mass
aggregating
Collecting or gathering in a mass or whole
agitating
Disturbing by bringing in a state or condition of being moved to and from steadily and violently
agreeing
Accepting or conceding something, getting along together or coming to terms
air conditioning
Conditioning by subjecting air to the process of temperature control, washing, humidifying and dehumidifying in order to bring and maintain specific qualities of air in a specific location
alarming
Warning by putting on the alert
alcoholising
Treating to saturate with alcohol, or to convert in alcohol
alerting
Informing to make clearly perceptive or aware of
aligning
Positioning by putting two or more things in proper relative position or orientation. Typically those that should be parallel or in line with each other.
alkalinising
Making alkaline
alkylating
Adding one or more alkyl groups to a compound (as to increase octane number in a motor fuel)
allocating
Apportioning for a specific purpose specific purpose or to particular persons or things
allowing
Accepting after giving consideration to circumstances or contingencies
alloy verfication
Non-destructive testing of the composition of base material
allylating
Adding allyl to
altering
Changing or causing to become different in some particular detail or characteristic without changing into something else
alternating
Changing of occurrence or succession by turns
aluminating
Process of treating or combining with alum or alumina
amine treating
Gas treating intended to remove contaminants by the use of amines
ammoniating
Process of combining or impregnating with ammonia or an ammonium compound
amplifying
Increasing or extending in size, number, or capacity
analysing
Studying and weighing various aspects, factors, or elements in order to arrive at an answer, result or solution.
anearobic digesting
Biotreating by which organic matter in sludge is decomposed by anaerobic bacteria with the release of a burnable mixture of gases
anemometry
Flow measurement by ascertaining the force, speed, and direction of gas, usually wind or an airflow
annealing
Treating by heating and then cooling intended to decrease internal tension, usually for softening and rendering less brittle.
announcing
Informing by giving public notice of
anodising
Process of coating an item with a protective or decorative film, by making the item the anode of a cell
anti surge controlling
Process controling of the throughput of a gas compressor as to prevent surging
appearing
Coming into view
appending
Adding as something secondary or subordinate, or to hang or suspend
applying
Using especially for some practical purpose
appointing
Establishing with power or firmness
apportioning
Assigning proportionately
appraising
Judging the quality or worth of
appropriating
Assigning or setting apart for a particular purpose or use, in exclusion of all others
approving
Agreeing with, or supporting, or commending, as meeting a standard, often formally.
arbitrating
Acting as an arbiter or judge
arc welding
Welding by heating with an electric arc
architecting
Designing by planning and contriving as an architect
archiving
Storing by filing or collecting in an archive or other repository
aromatising
Treating by conversion of aliphatic or alicyclic hydrocarbons in aromatic hydrocarbons
arranging
Putting in a correct, convenient, or desired order
arresting
Stopping or halting the motion, course, or progress of
arriving
Terminating at point in space, typically an intermediate or final destination
arsenicating
Treating by combining, or impregnating with arsenic
arsonating
Inserting the arsono group into, or convert in an arsonic acid or derivative
asking
Calling upon for an answer or informative response
asphyxiating
Poisoning resulting in killing or making unconscious by inadequate oxygen, presence of noxious agents, or other obstruction of normal breathing.
assembling
Composing in a whole by fitting various parts together
assessing
Analysing critically and judging definitively, in the realm of good economic principles, the nature, significance, status, or merit of
assigning
Appointing to a post, duty or task
assisting
Supporting in some undertaking or effort
assuring
Making sure or certain
atmospheric distillation
Distilling at nearly atmospheric pressure
atmospheric storage
Storing under atmospheric pressure.
atomising
Transforming by converting (a liquid or solid) in a fine spray, minute particles, or light dust
attaching
Making fast or join to something else
attaining
Arriving at the end by motion or growth or reach a goal by effort
attempting
Acting by making an effort to do, accomplish, solve, or effect
attending
Being present at
attenuating
Decreasing by lessening the amount, force, or value of
attesting
Affirming by official establishment or verification of the usage
attriting
Wearing or grinding down by friction
auditing
Verifying and examining a situation or process
augmenting
Increasing, especially in size, amount, or degree
authorising
Supporting by endorsing, empowering, justification, or permission by, or as if by, some recognised or proper authority.
automatic monitoring
Monitoring within equipment, providing automatic supervision without affecting the operation of the equipment
automatic reclosing
Automatic closing a circuit breaker after a fault trip
automatic supervising
Supervising automatically, normally within equipment, intended to detect failures both within and outside the equipment
automatic testing
Automatic supervision performed within equipment, that provides automatic testing of the equipment
automating
Converting to (largely) automatic operation
averaging
Determining the arithmetic mean of
awarding
Assigning after careful judgement
backfilling
Refilling with any material
backing up
Protecting a system against faults in the event of a failure of the primary service by providing a secondary service
backup protecting
Electrical PROTECTING that is intended to operate when a system fault is not cleared, or abnormal condition not detected, in the required time because of failure or inability of other PROTECTING to operate or failure of the appropriate circuit-breaker(s) to trip
baffling
Deflecting or stopping the flow of
bagging
Putting into a bag
baking
Subjecting to heat resulting in drying or hardening
balance testing
Electrical rotating machine testing done to ascertain that a machine rotor is balanced within specified limits
balancing
Equalising in weight, number, form, or proportion
baling
Bundling for storage or transportation
ballasting
Loading by steadying or equipping with something that gives stability or weight
banking
Business process of running an institution incorporated for performing one or more of the following functions: custody, loan, exchange, and issue of money, extension of credit, and facilitiating the transmission of funds
barring
Blocking by obstructing, block up, or shut off by or as if by a barrier
basic controlling
Controlling based on fundamental techniques of control
basic engineering
Engineering a process and its mechanical enablers conceptually
batch blending
Blending by forming a product batch of a desired mixture in the desired amount and quality
batch controlling
Process controlling that is supporting the production either in quantity and quality of a batch process
batch processing
Processing in a sequence of one or more process steps, each of which can be either a steady state or a dynamic process
batching
Collecting for processing at one time
batchwise operating
Operating in intermittant periods
bathymetry
Measuring water depth at various places in a body of water
beaming
Sending, radiating, or projecting in or as a beam
bearing-activity
Supporting or carrying a load
becoming
Changing from a previous state or condition, taking on a new state or condition
beginning
Executing the first part of an action, activity or procedure
behaving
Activity of performing or functioning in a particular way as reaction to a stimulus
being
Activity that entails the having of an objective existence
belling
Alerting by ringing a bell
benchmarking
Evaluating by measuring or judgement relative something that serves as a standard
bend testing
Destructive testing in examining a material by bending
bending
Deforming by turning, pressing, or forcing with stress concentrated at specific points from straight to curved or cambered
berthing
Bringing into a place where a ship lies when at anchor or at a wharf
bid evaluation
Evaluating an offer and determine preferences
bidding
Offering to satisfy requirements
bifurcating
Splitting by branching or separating in two parts
billing
Submitting a bill of charges to
binding
Joining by tying together
biotreating
Treating by biological means
bitumen blowing
Blowing air through hot liquid bitumen, resulting in a product in which the asphaltenes are partially dehydrogenated (oxidised), forming larger chains of asphaltenic molecules via polymerisation and condensation mechanism. Blowing will yield a harder and more brittle bitumen (lower penetration, higher softening point), not by stripping off lighter components but changing the asphaltenes phase of the bitumen
black-band testing
Commutation testing to determine the limits of the range of variation of commutating field strength between which the commutation is practically sparkless for a specified range of loads
blanketing
Covering so as to obscure, interrupt, suppress, or extinguish
blasting
Employing an explosive shatter to open something
blazing
Burning with a bright flame
bleaching
Removing the colour of stains, especially by chemical means
bleeding
Emptying or draining of liquid, gas, or other contents slowly
blend property ratio controlling
Ratio controlling of flow rates in order to achieve a specific property of a mixture of the flows
blending
Mixing and thoroughly intermingling different varieties or grades for reasons of improvement of qualities
blinding
Covering in order to withhold light or vision from
blistering
Changing into the form of a blister
blocking
Holding(stopping) by making unsuitable for passage or progress by obstruction
blocking overreach protecting
Unit protection using telecommunication, generally distance protection, with overreach protection at each section end and in which a signal is transmitted when a reverse external fault is detected
blocking protecting
Electrical protection, generally distance protection, in which the receipt of a signal blocks the local protection from initiating tripping
blowing
Driving air or other gas
blowing off
Ejecting using differential pressure, typically steam, water or sediment.
blowing out
Clearing of contents by the action of a current of gas or vapour
blowing up
Destroying or damaging by explosion
bodying
Increasing the viscosity of, to give strength, shape or substance to
boiling liquid expanding vapour exploding
Exploding by expanding vapour caused by boiling of the liquid phase
boiling off
Removing (gum, sizing, wax, dye) from fabric by boiling in a solution
boiling over
Spilling over a barrier because of boiling liquid
boiling-evaporating
Evaporating at the boiling point
boiling-heating
Heating by subjecting something to heat in a boiling liquid.
bolting
Joining by securing with one or more bolts
bonding
Connecting by binding or tying together
boosting
Increasing towards a higher level
bracing
Joining for stiffening or reinforcement
braiding
Arranging in a diagonally woven or crisscross pattern
braking
Reducing speed by or as if by applying a brake
brazing
Soldering with a non-ferrous alloy (as hard solder or brass) that is relatively infusible as compared with common solder
breaking
Splitting by pulling, tearing, thrusting, or shearing apart, typically forcefully and roughly.
breaking up
Decomposing into smaller units
breathing
Moving by drawing in and giving out air, gas, or vapour. Typically a tank due to temperature or volume changes.
breeding
Transforming by producing a fissionable element from a non-fissionable element by bombardment with neutrons
brewing
Process of producing beer or ale by steeping, boiling, and fermentation or by infusion and fermentation
bridging
Connecting by spanning or making a way across with or as if with a bridge
bringing
Moving by conveying, leading, carrying, or cause to come along from one place to another, the direction of movement being toward the place from which the action is being regarded.
brittle fracturing
Fracturing by embrittlement
broadcasting
Sending by disseminating or distributing widely or at random
browsing
Scanning by making a casual examination without real knowledge or purpose
brushing
Removing with a brush or by a similar act
bubbling
Moving upward in or as if in small globules
buchholz protecting
Transformer protection against oil coolant gassing
buckling
Fastening with a buckle
budgeting
Planning financial resources by preparing a statement of the financial position for a definite period of time based on detailed estimates for planned or expected expenditures and proposals for financing them
buffering
Storing in order to compensate for differences in processing capacities of subsequent process units
building
Forming by ordering and uniting materials by gradual means in a composite whole
bulking
Gathering in a mass or aggregate
bulldozing
Moving or clearing, or leveling off by pushing with or as if with a bulldozer
bundling
Collecting by tying or binding in a bundle
bunkering
Filling by placing or storing in a bunker. Typically fill a ship's bunker with coal or oil.
buoying
Floating by making or keeping afloat
burning
Reacting by undergoing or causing to undergo combustion
bursting
Breaking to pieces, especially from pressure from within
business process
Processing consisting of an activity or a set of coherent activities intended for a specific purpose performed by one or more persons representing one or more commercial or industrial enterprises
buying
Getting possession or ownership of by giving or agreeing to give money in exchange
buzzing
Alerting with a buzzer
bypassing
Passing(transferring) by making a detour around
calcifying
Making or becoming calcareous by deposit of calcium salts
calcining
Treating by heating (inorganic materials) at high temperature without fusing in order to effect useful physical and chemical changes
calculating
Determining by mathematical process
calibrated driving machine testing
Electrical rotating machine testing in which the mechanical input or output of an electrical machine is calucalted from the electrical output or input power of a calibrated machine mechanically coupled to the machine on testing
calibrating
Adjusting precisely for a particular function, or standardising by determining the deviation from standard and adjusting if appropriate
calipering
Measuring a distance between two surfaces by or as if by a caliper
calling
Communicating by speaking or addressing in order to attract the attention, summon, or make a request
calorimetric testing
Electrical rotating machine testing in which the losses in a machine are deduced form the heat produced by them, the losses being calculated from the heat absorbed by the coolant and the heat dissipated to the machine surrounding medium, if significant
calorising
Treating by a process for coating (iron or steel) with aluminium
cancelling
Removing from significance, effectiveness, or validity
cannibalising
Dismantling of parts that need to be used as replacement elsewhere
canopying
Covering with or as if with a canopy
capacitating
Making capable
capping
Covering or protecting, or closing with or as with a cap
capturing
Obtaining and holding, especially by effort
carbon arc welding
Arc welding process that produces coalescence of metals by heating them with an arc between a carbon electrode and the work piece. No shielding is used. Pressure and filler metal may or may not be used
carbonating-adding
Adding by combining or impregnating with carbon dioxide
carbonating-converting
Converting in carbonate
carbonising
Converting in carbon or a carbonic residue
carbureting
Enriching (a gas) by mixing with volatile carbon compounds
carburizing
Process of combining or impregnating (as metal) with carbon
caring
Acting carefully for a purpose
carrier feeder protecting
Relay protection according to a differential protection scheme in which the comparison of current at each end is transmitted over a data link
carrying
Moving something from one place to another while supporting
carrying out
Acting by putting in operation and continuing to an end or stopping point
cascade process
Processing in a series or in a succession of stages so that each stage derives from or acts upon the product of the preceding
cascading
Connecting in an arrangement where something is arranged or occurs in a series or in a succession of stages so that each stage derives from or acts upon the product of the preceding
catalising
Accelerating a chemical reaction whilst remaining unchanged chemically
cataloging
Recording the name of, or appropriate information about, in a catalogue
catalytic cracking
Cracking by means of a catalyst agent under the application of heat and pressure
catalytic dewaxing
Dewaxing using a catalytic agent
catching
Getting hold of
categorising
Assigning to a category or class
catering service
Serving by providing food
causing
Bringing in existence
cavitating
Wearing or pitting of solid surfaces (as of metal or concrete) as a result of the collapse of partial vacuums formed in surrounding liquid
ceasing
Terminating by stopping or bringing to an end
cementing
Joining by or as if by means of cement or concrete
centering
Placing or fixing at or around a center or central area or position
centrifuging
Separating by subjecting to a centrifugal force
certifying
Attesting authoritatively or officially
chaining
Arranging by ordering or forming or joining in a chain
changing
Making different in some particular, but short of conversion into something else
changing over
Converting to a different purpose or system or from use of one method or technique to another
changing over a relay
Changing over by either operating or releasing a relay
channeling
Conveying through or as if through a channel
characterising
Describing the essential character, quality, or property, or an aggregate thereof, of something
charging
Loading or filling with physical objects to be treated or consumed
charging a battery
Charging a battery with electric energy from an external circuit that is converted to chemical energy
charting
Making a map, plan, or chart for
checking-limiting
Limiting by bringing to a stop or by holding in restraint
checking-verifying
Verifying by investigating and obtaining confirmation or substantiation of accuracy, fitness, or due performance
chemical engineering
Engineering by designing of chemical and physical processes and the enabling facilities
chemical injecting
Injecting a chemical substance
chemical processing
Processing in which chemical properties of substances are changed
chemical reacting
Reaction that is a chemical transformation or change, the interaction of chemical entities, a process involving change in atomic nuclei
chemical to mechanical energy conversion
Energy conversion of chemical energy into mechanical energy, typically via combustion
chilling
Cooling down to a low temperature
chiming
Alerting by means of a chime
chloridising
Treating with chlorine or with a chloride
chlorinating
Treating or causing to combine with chlorine or a compound of chlorine
choking
Constraining the motion of
choosing
Selecting based on preference
chromatography
Analysing by separating constituents of a mixture by permitting a solution of the mixture to flow through a column of adsorbent on which the different constituents are selectively separated into distinct bands or spots
chuting
Conveying by a chute
circuit local backup protecting
Backup protection that is energized either from those instrument transformers which energize the main protection or from instrument transformers associated with the same primary circuit as the main protection
circuit-breaker failure protecting
Electrical protection that is designed to clear a system fault by initiating tripping of other circuit-breakers(s) in the case of failure to trip of the appropriate circuit-breaker
circulating
Moving around and returning at the same point
civil engineering
Engineering the civil aspects of an item
cladding-activity
Covering with a coating of different composition to promote special properties
claiming
Demanding recognition of a right
clamping
Fastening or pressing with or as if with a clamp
clarifying
Making clear
classifying
Categorising by asserting to be a member of a class
claus process
Sulphur recovery according to the process where the Claus reaction is used
cleaning
Removing dirt or any foreign or offensive matter
cleaning service
Serving by ridding one or more objects of dirt, impurities, or extraneous matter
cleaning up
Freeing from a state of disorder
cleansing
Cleaning with water or a detergent solution
clearing
Removing any impediments from
clearing away
Removing by getting rid of a material
clicking on
Connecting by making a click-on connection
climbing
Going upward with gradual or continuous motion
clipping
Cutting off a part
clocking
Determining an elapsed time
clogging
Obstructing so as to hinder the motion in or through
closed transport
Transporting a material in a closed environment
closing
Acting by contracting, folding, swinging, or sliding so as to leave no opening
closing down
Stopping an operation
clustering
Collecting a number of similar things into one or more groups in association or in physical proximity
co-extruding
Extruding in association with another activity
co-generating
Generating in association with another activity
coagulating
Process of becoming or causing to become viscous, jellylike, or solid, or uniting in a coherent mass
coalescing
Joining into one body or product
coating-activity
Covering or spreading with a finishing, protecting, or enclosing layer of any substance
coding
Describing in accordance with a system of symbols, as for inserting information and instructions in a computer system
cohering
Holding(having) firmly, solidly, stickily, and with resistance to separation
coiling
Winding in a spiral or helix
coinciding
Occupying the same part of the space-time continuum
coke deactivation
Deactivating catalysts by coke formation
coke formation
Forming a deposit of highly condensed aromatic structures of low hydrogen content polymerised and dehydrogenated acetylenes and olefins
coking
Converting into coke or to something resembling coke (as in physical properties)
cold pressing
Forming without heating
cold start up
Starting up where an item is raised to speed, connected and loaded after a long period of being out of operation.
cold welding
Solid state welding in which pressure is used at room temperature to produce coalescence of metals
collecting
Gathering into a collection or a mass in a place
colloiding
Converting into a colloidal state
colorimetry
Analysing by comparison of a liquid's colour with standard colors
colour coding
Encoding by means of colouring
colouring
Changing the colour of
combined heat and power generation process
Generating heat that is used for non-electrical purposes and also for the generation of electricity
combining
Joining in chemical, physical, or organic union
combusting
Burning fuel thereby evoluting heat and light
combustion controlling
Process controlling of the combustion of fuel
coming
Moving toward or enter a scene of action or into a field of interest whether partly physical or wholly ideal
commanding
Controlling by the provision of instructions, typically a single instruction intended to trigger action
commercial road transport
Road transport that is part of a commercial undertaking
commercialising
Managing on a business basis for profit
commissioning
Bringing in a state where readiness for active service is warranted
commissioning testing
Electrical rotating machine testing on a machine or equipment carried out on site, to prove the correctness of installation and operation
committing
Consigning or recording for preservation, or putting into a place for disposal or safekeeping
commodity testing
Non-destructive testing that involves examining a system in a normal operation mode
communicating
Exchanging knowledge or information of
commutation testing
Electrical rotating machine testing on a machine with a commutator to assess the commutating properties under specified conditions
compacting
Pressing together in a unified or coherent whole
compaction of ground
Compacting ground particles
comparing
Examining the character or qualities of two or more things for the purpose of discovering resemblances or differences
compensating
Adjusting by providing with means of counteracting variation or of neutralizing the undesired effects thereof
competing
Striving consciously or unconsciously for an objective as a position, profit, or prize
competitor product analysis
Analysing the products of competitors
compiling
Collecting and assembling in a document or volume
completing
Terminating by bringing to an end, often in or as if in a finished or perfected state
complying
Conforming to wishes, a rule, or to a necessity
composing
Arranging in proper or orderly form
compounding
Combining different elements, ingredients, or part to form a composite product
compressing
Pressurising, esp. on opposite sides of, to increase the density of or reduce the volume of
computer aided design
Designing supported by a computer application
computer aided draughting
drawing-draughting supported by a computer application
computer aided engineering
Engineering supported by computer applications
computer service
Serving by giving advice on and delivering goods related to computers
computing
Determining or ascertaining, especially by mathematical means
concatenating
Uniting in a series or chain
concealing
Hiding by placing out of sight
conceiving
Forming in the mind as a concept or idea
concentrating
Making less dilute or diffuse
conceptual design
Designing in terms of an abstract or generic idea generalized from particular instances
conceptual engineering
Engineering in outline an artifact for an industrial object
conceptual process design
Process design in outline
concuring
Acting together to a common end
condense separation
Physical separation where gaseous substances are separated by lowering the temperature so the substance with the highest boiling temperature drops out in liquid form
condensing-chemical reaction
Chemical reaction involving union of atoms in the same or different molecules form a new compound of greater complexity and often greater molecular weight
condensing-concentrating
Concentrating by evaporation or distillation
condensing-phase transition
Phase transition from vapour to liquid
condition-based maintenance
Maintaining on the basis of the observed condition of an item
conditioning
Treating by putting in a proper or the desired mode or state of being
conducting
Conveying energy or material
conference management
Managing the organisation of a conference
configuring
Arranging in a certain form, figure, shape, or functionality
confining
Holding(restraining) or keeping a certain place or a limited area
confirming
Stating by making unquestionable of something in question
conforming
Being in accordance with applicable rules and regulations
congealing
Transiting from a liquid state to a solid state by or as if by cold
congesting
Constraining by overcrowding, overburdening, or filling excess so as to obstruct movement or hinder functioning of
conglomerating
Collecting or gathering in a mass or coherent whole
conglutinating
Cohering or causing to cohere
connecting
Joining or fastening, or linking together, often by means of something intervening
conserving
Preserving from change or destruction
consigning
Giving over to another's charge, custody, or care
consolidating
Uniting or growing in a coherent whole
constraining
Limiting by stricture, restriction, or limitation imposed by nature, oneself, or circumstances and exigencies
constraint controlling
Process controlling based on the technique of being checked, restricted, or compelled to avoid or perform some action
constricting
Acting by drawing together or rendering narrower
constructing
Making or forming, or creating by combining parts or elements
construction testing
Testing to verify proper construction of an item with reference to the design
consuming
Using time or a physical object in the satisfaction of wants or the process of production
contacting
Touching or communicating, or causing to touch or communicate
containing
Holding(restraining) within physical constraints
contaminating
Inserting unwholesome or undesirable elements, thus rendering unfit for use
continuing
Resuming an activity after an intermission
continuous actuation
Actuating by continuous positioning
continuous operation
Operating without interruption
continuous service testing
Testing a battery that is subjected to an uninterrupted discharge
contouring
Shaping a thing to fit the shape of something else
contracting
Agreeing by entering in a legally enforceable agreement with two or more parties to do or not do something
contracting out
Removing oneself by contract from an incurred obligation
contrasting
Differing by forming a diversity of adjacent elements
contriving
Creating as a work of art or ingenuity
control engineering
Engineering of control processes
controlling
Influencing by exercising restraining or directing guidance
convecting
Transferring heat by a circulatory motion that occurs in a fluid at a non-uniform temperature owing to the variation of its density and the action of gravity
converging
Moving towards a common position
conversing
Communicating thoughts and opinions in speech
conversion controlling
Process controlling of the nature or properties of especially in manufacturing
conversion of electricity
Converting the characteristics of the form and frequency of voltage and current by means of a converter
converting
Changing from one state in another thereby altering in form, function, substance, or quality
conveying
Transporting by bearing or transferring from one place to another
cooking
Treating by exposing to fire, heat, or some agency felt to be similar in a technical process
cooling
Extracting heat from
coordinating
Regulating and combining in harmonious action
copying
Making a duplicate of an original with resemblances as close as circumstances will permit
core testing
Electrical rotating machine testing undertaken on a laminated unwound core to determine the loss characteristic or the effectiveness of the interlaminar insulation
correct operation
Operating in a way as is required
correct operation of protecting
Correct operation of a protection by the initiation of tripping signals and other commands in response to a power system fault or other power system abnormality
correcting
Changing by altering or adjusting so as to bring to some standard or required condition
corrective maintenance
Maintaining after recognition of a fault
corresponding
Conforming or matching closely
corroding
Wearing away by gradually separating or destroying small particles, often due to acid or alkali reaction or chemical alteration
corrosion protecting
Surface protection to prevent deterioration of the material due corrosion
corrugating
Shaping in alternating ridges and grooves
cost accounting
Accounting the cost of goods and activities
cost estimating
Estimating the cost of goods and activities
cost reduction
Reducing costs of an undertaking
costing
Causing the expenditure or loss of
counterbalancing
Opposing with equal force
counterbracing
Bracing in opposite directions so that opposite stresses are resisted
counting
Computing or tallying and recording a total
coupling
Connecting with a coupling or coupler
covering
Shielding or causing to shield in order to protect or conceal
cracking
Breaking up chemical compounds into simpler compounds by means of heat
crating
Packing(covering) in a crate or case for transportation
creating
Making or bringing into existence something new
creep embrittlement
Embrittling by a slow decrease of dimensions from prolonged exposure to high temperature or stress
creep rupture
Rupturing by slow change of the structure of an object from prolonged exposure to high temperature or stress
creeping
Degrading by slow change of the structure of an object from prolonged exposure to high temperature or stress
crevice corrosion
Corroding in the form of a narrow opening resulting from a split or crack
crude valuation
Assessing the economic value of crude oil
crushing
Destroying by squeezing or forcing by pressure so as to damage or destroy the structure of
crystallising
Forming or causing to form crystals, or assuming crystalline form
cumulating
Enlarging by addition
custody transfer
Transferring custodianship of something
customer care
Caring for customers
customising
Adapting by fitting or altering according to individual specifications
cutting
Separating in parts with an action or results suggestive of that of an edged instrument
cutting off
Stopping the operation of
cyanide corrosion
Corroding due to the presence of cyanide
cycling
Acting by going through a cycle of changes
cycling a relay
Cycling a relay by operating it and then releasing it, or visa-versa
cyclonic separation
Gravity separation by rotation of a mixture of substances with different density in a static container
damaging
Causing loss or harm resulting from injury person, property, or reputation
dampening
Reducing an amplitude by deadening, depressing, reducing, or lessening its extent
darkening
Reducing light intensity by making dark or darker by depriving of light
de-noxing
Removing nitrogen oxides from
de-soxing
Removing sulphur oxides
deacetylating
Removing acetyl from, usually by hydrolysis
deacidifying
Removing acid from, or reduce acidity of
deactivating
Changing from an active into an inactive state
deaerating
Removing air or gas from
dealkalising
Removing alkali from, or reduce the alkaninity of
dealkylating
Removing alkyl groups from
deamidating
Removing the amido group from
deaminating
Removing the amino group from
deashing
Removing ash from
debenzylating
Removing benzyl groups from
debottlenecking
Revamping by addition or substitution of some items so that it can operate at increased performance
debugging
Correcting by detecting and eliminating errors in or malfunctions of
decalcifying
Removing or loss of calcium or calcium compounds from
decanting
Separating by drawing off (a liquid) without disturbing the underlying sediment or precipitate or the lower liquid layers
decarbonating
Removing carbon dioxide or carbonic acid from
decarboxylating
Removing carboxyl from
decelerating
Decreasing the velocity
deciding
Choosing by arriving at a choice or solution concerning, which ends uncertainty or contention
declassifying
Terminating the classification of
declining
Sloping downwards
decolourising
Removing colour from
decommissioning
Changing from a state suitable for active service to a state unsuitable for active service
decomposing
Separating or resolving in constituent parts or elements or in simpler compounds
decreasing
Changing to a lower quantity or number
deenergising
Stopping the flow of energy, typically electrical current
deep hydrodesulphurization
Hydrodesulphurising to a very low degree of sulphur
deesterifying
Removing ester groups from
deethanising
Removing ethane and sometimes lighter fractions from
defining
Determining or deeming the characteristics of
deflagrating
Burning rapidly with intense heat and sparks being given off
deflecting
Turning away from a straight course of fixed direction
deflocculating
Reducing, or breaking up from, a flocculent state
defluorinating
Removing fluorine from
defoaming
Removing foam from
deforming
Changing the form or shape of
deforming under explosion
Deforming under pressure by applying the force of an explosion
deforming under pressure
Deforming by exerting pressure
defrosting
Releasing from a frozen state
degasifying
Removing gas from, to free from gas
degassing
Removing gas from
degaussing
Changing to a non-magnetic state
degenerating
Changing to an inferior or less effective level, character, grade, rank or status
degrading
Lowering(reducing) or impairing with respect to some physical property
degreasing
Removing grease, oil, or fatty matter from
degumming
Removing gum or gummy substance from
dehumidifying
Removing moisture from
dehydrating
Removing chemically combined water or water of hydration from
dehydrogenating
Removing hydrogen from
deicing
Removing or keep free of ice
deinstalling
Acting by taking an item out of position, thus terminating possible use
deionising
Removing ions from
delaminating
Splitting in constituent layers along a plane of lamination
delayed protecting
Electrical protection with an intentional delay
delaying
Prolonging the time of or before
deleading
Removing lead from
deleting
Eliminating as a factor or a matter for consideration
delimiting
Determining the limits of
delivering
Bringing to an intended destination
delta-wye conversion
Network conversion by reduction of the number of meshes
demand forecast
Forecasting the demand for a product
demanding
Calling for with authority
demetalising
Removing metal from
demethylating
Removing methyl from
demineralising
Removing mineral matter from
demobilising
Breaking up the organisation of
demodulating
Extracting the intelligence from a modulated signal
demolishing
Destroying by pulling or tearing down and breaking in parts
demonstrating
Showing by making evident or revealing as true by reasoning processes, concrete facts and evidence, experimentation, or operation
demounting
Acting by taking from a mounted position
demulsifying
Converting to a form that resists emulsification
demultiplexing
Decomposing a multiplex signal into its component parts
denaturing
Changing the molecular structure of (as a protein or DNA) especially by heat, acid, alkali, or ultraviolet radiation so as to destroy or diminish some of the original properties and especially the specific biological activity
denitrating
Removing nitrates, nitric acid, the nitro group, or nitrogen oxides from
denitrifying
Removing nitrogen or its compounds, or converting nitrates or nitrites in compounds of lower oxidation states
deoiling
Removing oil as defined in ISO 1998 definition 3-032
deoxidising
Removing oxygen from, or reduce from the state of an oxide
deoxygenating
Removing free or loosely combined oxygen from
deozonising
Removing ozon from
deparaffinising
Removing paraffine from
depentanising
Removing pentanes from
depleting
Decreasing in number, quantity, content, or force or in vital power or value as a result of such lessening
depolymerising
Decomposing macromolecular compounds by various means in relatively simple compounds
depositing
Moving by laying down, or letting fall or drop by a natural process
depressurising
Releasing pressure from
depropanising
Removing propane and sometimes lighter fractions from
deriving
Developing out of something else
desalting
Removing salt from
descending
Moving downwards
describing
Presenting distinctly by means of properties and qualities
desiccating
Drying thoroughly
designing
Developing by creating, planning, calculation, or laying out for a predetermined purpose
desorbing
Freeing from a sorbed state by the reverse of absorption and adsorption
destroying
Changing completely beyond possibility of reuse
destructive inspection
Inspecting where the inspected object is damaged due to the inspection
destructive testing
Testing in such a manner that the subject of the testing is damaged or destroyed
desulfonating
Removing sulfonic groups (from a sulfonated substance)
desulfurising
Removing sulfur or sulfur compounds from
desuperheating
Cooling by lowering the temperature of superheated steam or other vapor
detaching
Disjoining by separating a part from a whole for a use
detailed design
Designing to a detailed level
detailed engineering
Engineering to a detailed level
detailed layout and construction design
Designing equipment and its position in detail
detailed process design
Process design in such a detail that it is sufficient to define a collection of items and the way to operate them in order to execute a process
detailing
Describing to a more detailed level
detecting
Discovering by sensing or observation
deteriorating
Changing by becoming impaired in quality, state, or condition
determining-deciding
Deciding as the result of investigation or reasoning
determining-obtaining
Obtaining definite and firsthand knowledge of as taxonomic position, character, quality, quantity, magnitude, or location
detonating
Exploding with sudden violence
developing
Acting by going through a process of evolution by successive changes advancing from a simpler form or state in a more complex, either in structure or in function
deviating
Turning away from an established course or norm
dewaxing
Removing wax from
dielectric testing
Testing electrical insulation by applying a high voltage across the insulation to determine the adequacy of its dielectric strength
differentiating-computing
Computing the mathematical differential of an algebraic function; the differential in a point on the function is typically equivalent the slope of the function at that point
differentiating-distinguishing
Distinguishing using a specific criterium
differing
Being unlike or distinct in nature, form, or characteristics
diffusing
Spreading freely over a wide area and through a large space
diffusion brazing
Brazing by a hybrid joining process that combines the features of liquid-phase joining and diffusion bonding and has the beneficial features of both techniques
diffusion welding
Solid state welding process that produces coalescence of the faying surfaces by the application of pressure and elevated temperatures
diluting
Mixing with something else in order to make less concentrated
dimensioning
Defining dimensions for or giving dimensions to
dimming
Reducing by making less bright or distinct
dip brazing
Brazing by immersion in a chemical bath or a molten metal bath, mainly used for joining small parts
dipping
Immersing by taking a course downward, sometimes momentarily or partially until under the surface of a liquid or of an adhesive substance so as to moisten, drench, cool, colour, or coat
directing
being in charge of an activity
directional comparison protecting
Unit protection using telecommunication, usually not a distance protection, in which the relative operating conditions of phase angle measuring elements, at each end of the protected section, are compared using a locally derived voltage or current
directional protecting
Electrical protection designed to operate only for a fault located in one direction from the relaying point
disappearing
Terminating of being in sight or existence
disapproving
Refusing approval to
disassembling
Decomposing into constituent parts
disassociating
Terminating an association
discharge energy testing
Testing by determining the magnitude of the energy dissipated by a discharge or discharges within the electrical insulation at a predetermined value of voltage
discharge inception testing
Testing by measuring the lowest voltage at which discharges of a specified magnitude recur in successive cycles when an increasing alternating voltage of power frequency is applied to the electrical insulation
discharging
Relieving of a charge, load, or burden
discharging a battery
Discharging a battery by which the battery delivers current to an external circuit by the conversion of chemical energy into electric energy
disconnecting
Disjoining by termination of a connection
discontinuing
Ending the operations or existence of
discovering
Obtaining for the first time sight or knowledge of
discrete actuation
Actuating by discrete positioning
disengaging
Extricating from something that entangles
disengaging a relay
Disengaging a relay from service
disjoining
Undoing the joining of
dislocating
Moving from a proper or former place, away from contiguous items
dismantling
Removing of equipment
dismissing
Permitting to leave or to remove from position or service
dismounting
Removing a thing from its mounting or setting
dispatching
Sending off or away with promptness or speed, typically on official business
dispersing
Distributing more or less evenly throughout a liquid, gaseous, or solid medium with the formation of a two-phase system
displaying
Exhibiting to the sight or mind
disposing
Acting by getting rid of
dissipating
Disappearing or causing to disappear thereby becoming unrecoverable
dissolving
Passing(transferring) or causing to pass(transfer) into solution
distance protecting
Non-unit protection whose operation and selectivity depend on local measurement of electrical quantities from which the equivalent distance to the fault is evaluated by comparing with zone settings
distilling
Separating by a process of heating and condensing liquid products for reasons of purification, fractionation, or decomposition, which repeatedly uses the difference in composition between a vapour and a liquid in an approximate equilibrium
distinguishing
Recognising as different by some mark or quality
distributing
Moving to various distinct places
distribution of electricity
Distributing electricity to consumers within an area of consumption
disturbing
Destroying the rest, tranquility, or settled state of
diverging
Moving by turning aside or leading away from a particular course or direction
divesting
Removing by depriving or dispossession especially of property, authority, or title
dividing-computing
Computing the mathematical quotient of two numeric values, each of which may be the result of the evaluation of a numeric expression
dividing-separating
Separating into parts
doctor treatment
Sweetening as defined in ISO 1998 definition 3-013
document management
Managing the creation, filing and retrieval of documents and files
documenting
Producing a recording with enough details for the reproduction of authentic situations or events
doing
Acting by bringing to pass, carrying out, or performing
dosing
Adding an ingredient or the application of an agent in a measured dose
downgrading
Reducing by minimising or depreciating in grade
draining
Drawing off liquid contents
drawing-draughting
Draughting by or as if by tracing a pen or other instrument of delineation over a surface
drawing-moving
Moving in a direction by means of a compelling force
dredging
Excavating under water with a dredge
drenching
Filling completely as if by soaking or precipitation
drilling
Removing material by means of a rotary tool in order to make a cylindrical opening in or through it
dripping
Falling in drops
driving
Controlling the setting and keeping in motion through application of some amount of some form of energy
dropping
Falling or letting fall in any way
dry cleaning
Cleaning fabrics with substantially nonaqueous organic solvents
drying
Making or becoming dry
dumping
Disposing or disposing of somewhat unwanted in an irresponsible manner
dwindling
Diminishing in size steadily
dying
Colouring by imparting a new and often permanent colour by impregnating with a dye
dynamometer testing
Electrical rotating machine testing in which an electrical dynamometer is used
earth fault and over current protecting
Relay protection that is a combined overcurrent and earth fault protection
earth fault protecting
Relay protection against earth faults
earthing
Connecting electrically to earth potential
echoing
Reflecting waves
economising
Utilising heat otherwise wasted
editing
Changing by altering, adapting, or refining to bring about conformity to a standard or to suit a particular purpose
effecting
Causing something to come into being
ejecting
Moving by throwing or driving out from within
elaborating
Expanding something in detail, by analysis or reasoning
elapsing
Passing or slipping by, especially of time
electric to mechanical energy conversion
Energy conversion to convert electrical energy into mechanical energy
electrical back-to-back testing
Electrical rotating machine testing in which two identical machines are mechanically coupled together and are both connected electrically to the same supply system, the total losses of the two machines being taken as the power input drawn from the supply
electrical engineering
Engineering of electrical systems and electrical components
electrical heating
Heating by using electrical energy
electrical insulation
Insulating so as to prevent transfer of electricity
electrical processing
Processing by applying electrical energy
electrical protecting
Protecting by detecting faults or other abnormal conditions in a power system, for enabling fault clearance, for terminating abnormal situations and for initiating signals or indications
electrical rotating machine testing
Testing an electrical rotating machine
electrical tracing
Heat tracing intended to prevent too much cooling by means of electrical heating
electricity transformation
Transforming electricity through a power transformer
electrifying
Providing with electricity
electrodepositing
Depositing by electrolysis, typically of nickel, copper, or rubber.
electromagnetic conversion
Electric to mechanical energy conversion to convert a power field created by electromagnetic forces
electromagnetic separation
Separating substances by means of electromagnetic energy
electron microscopy
Microscopy by means of an electron-optical instrument
electron probe microanalysis
Microanalysis by means of an electron probe
electronic document management
Document management by electronic means
electroslag welding
Welding in a single-pass process. Once a weld begins, it continues without interruption. The process requires a welding arc only at the beginning of the weld cycle. The arc heats a supply of granular flux and forms a molten slag bath which extinguishes the arc. The electrically-charged slag bath (hence the name electroslag) is resistant to the welding current passing through it. This resistance heats the slag and keeps it molten at a temperature of approximately 3500° F (about 2000° Celcius)
electrostatic precipitation
Precipitating by applying a strong electric field, thereby removing suspended particles from a gas by charging those particles
elevating
Lifting up in space
eliminating
Removing by causing to disappear
eluting
Removing adsorbed material from an adsorbent by means of a solvent
elutriating
Removing substances from a mixture by washing and decanting or by maintaining a slow upward stream in the fluid
eluviating
Process of transportation of dissolved or suspended soil material within the soil by the downward or lateral movement of water when rainfall exceeds evaporation
embrittling
Changing involving making or becoming brittle
emergency shutdown
Shutting down rapidly in order to prevent or remedy a dangerous situation
emitting
Moving by throwing or giving off or out
employing
Using or engaging the services of
emptying
Removing by making empty, devoid of content, or vacant
emulating
Imitating with the intention of equaling
emulsifying
Converting in an intimate mixture of two incomplete miscible substances of which one is dispersed in the other, the former being a liquid or solid and the latter being a liquid
enabling
Giving the opportunity to
enamelling
Covering or inlaying by a vitreous composition applied by fusion to the surface of
encapsulating
Containing by surrounding, encasing, or protecting in or as if in a capsule
encasing
Covering or surrounding with or as if with something solid, impermeable, or confining
enciphering
Encoding by converting (a body of information) in cipher
enclosing
Covering by placing in a parcel or envelope
encoding
Converting from one system of communication into another
encrypting
Encoding for the purpose of maintaining secrecy
endangering
Bringing in peril of probable harm or loss
ending
Acting by bringing or coming to an end
energising
Applying energy to
energy conversion
Converting energy from one form to another
energy transfer
Transferring energy from one place to another
engaging
Arranging to obtain the use or services of
engineering
Business process of designing or producing by methods of technical sciences by which the properties of matter and the sources of energy in nature are made useful for mankind in structures, machines, and products
engraving
Cutting upon with an instrument in order to form an inscription or pictorial presentation
enhancing
Increasing the worth or value of
enlarging
Increasing in capacity, quantity, extent, or dimensions of
enriching
Increasing richness in some quality of
ensuring
Making sure, certain, or safe
entangling
Constraining by twisting or interweaving so as to make separation difficult
entering
Acting by passing or causing to pass into the interior of
entraining
Carrying along or over, especially mechanically (e.g. fine drops of liquid in vapour)
enumerating
Listing explicitly
enveloping
Enclosing or surrounding with a non-solid material (e.g. gas)
epimerising
Converting in an epimer
epoxidising
Converting in an epoxide
equalising
Making equal in amount or degree
equipotential bonding
Bonding using electricity by putting various exposed conductive parts and extraneous conductive parts at a substantially equal potential
equipping
Providing with material or intellectual resources thus making ready or competent for service or action
eradicating
Destroying completely
erasing
Removing by rubbing or scraping out
erecting
Placing by fixing in an upright position by fitting together of materials or parts
eroding
Deteriorating by eating in or away by slow destruction of substance
erring
Acting in a wrong way
escalating
Moving on or as if on a moving staircase or conveyor belt
escaping
Moving away or out from an enclosure or something viewed as imminently or likely to be dangerous, threatening, or otherwise to be feared or disliked
establishing
Acting by bringing into existence, creating, making, starting, originating, founding, or building with permanence in view
esterifying
Converting in an ester
estimating
Determining an approximate statement of the cost, size, extent, magnitude, or nature of
etching
Producing (as a design) on a metal or glass surface by covering it with an acid-resistant ground through which a design is scratched with a pointed instrument and then submitting the surface with an acid bath or other mordant
etherifying
Converting in an ether
evacuating
Removing from a holding place
evaluating
Examining and judging concerning the worth, quality, significance, amount, degree, or condition of
evaporating
Converting from a liquid state in a vapour state
evolving
Changing by natural evolutionary processes
examining
Inspecting visually or by the use of other senses for the determination of accuracy, property, or quality
excavating
Removing material so as to leave a space
exceeding
Extending beyond a set limit
exchanging
Substituting one thing in the place of another
exciting
Calling to activity in any way
executing
Acting by putting in effect
exhausting
Moving by drawing off or letting out wholly
exhibiting
Presenting to view
existing
Being, whether material or spiritual, in space and time
expanding
Increasing in extent, size, number, volume, or scope
expediting
Accelerating the process or progress of
expensing
Charging to an expense account or write off as an expense expenditure
expiring
Ending through the passage of time
exploding
Combusting rapidly with a sudden release of energy in the form of heat that causes violent expansion of the gases formed
exploiting
Acting by turning something to economic account
exploring
Searching systematically
explosion heating
Heating by explosion, using both detonation pressure and heat to form a product
explosion welding
Solid state welding that effects coalescence by high velocity movement together with the workpieces produced by a controlled detonation
exporting
Moving by carrying or sending to some other country or place
exposing
Subjecting or submitting to an action or influence
expressing
Representing by signs or symbols
extending
Expanding in distance, space, or time
extinguishing
Terminating a fire
extracting
Separating or otherwise obtaining from a substance by treating with a solvent, distilling, evaporating, subjecting pressure or centrifugal force, or by some other chemical or mechanical process
extrapolating
Expanding known data or experience in an area not known or experienced
extricating
Separating and setting aside
extruding
Shaping by forcing through a specially designed opening often after a previous heating of the material or of the opening, or both
exudating
Discharging slowly in small drops through openings
fabricating
Making into a whole by uniting parts
facilitating
Making easier or less difficult
facing
Having the front turned in a specified direction
factagene conversation
Performative conversation starting with a declaration
failing
Being deficient or inadequate
failure analysis
Analysing the cause of a failure
failure operate of protecting
Incorrect operation of protection that should have operated but did not do so
falling
Descending by the force of gravity when freed from suspension or support
farming
Process of agriculture or aquaculture
fastening
Fixing firmly or securely
fatigue corrosion
Corroding due to a change of characteristics because of frequent motion
fatiguing
Degrading mechanically in strength because of frequent stress variations
fault protecting
Protecting against physical faults in an electrical system
feasibility study
Studying the feasibility of options and identifying a preferred option
feed forward controlling
Controlling a process thereby anticipating on process disturbances by manipulating the output signal in advance
feeder protecting
Fault protection of feeders in a transmission or distribution system
feeding
Supplying material or energy to
feeding back
Transmitting corrective information to the original or controlling source about an action, event, or process
fermenting
Transforming by using enzymes, yeast, bacteria, or molds as an agent
filing
Storing in a particular arrangement for preservation and reference
filling
Supplying with as much as can be held or contained
filtering
Process of passing through or as if through a device that separates unwanted from wanted matter or energy forms
financial accounting
Accounting the financial aspects of an undertaking
financial controlling
Controlling the financial aspects of an undertaking
financial forecasting
Forecasting the financial aspects of an undertaking
financial planning
Planning the financial aspects of an undertaking
financial reporting
Reporting the financial aspects of an undertaking
financial service
Serving by giving advice on financial issues
financing
Providing with necessary funds in order to achieve a desired end
finding
Discovering by study or experience directed to an object or end
finishing-completing
Completing the work on
finishing-treating
Treating to give special characteristics that improve appearance and usefulness by processing
fire fighting
Terminating a fire
fire proofing
Thermal protection to protect a material against the possible impact of fire, typically by covering it with fire protection material
fire protecting
Protecting against the effect of a fire or preventing the occurrence of it
firing
Burning or setting to burn with a flame
fissioning
Process of cleaving, splitting, or breaking up into parts
fitting
Making to the right shape and size
fixed bed reaction
Chemical reaction in a fixed bed
fixed bed separation
Physical separation of two substances (often gaseous) from each other in a fixed bed. Gases having a certain molecular size will be attached (absorbed) to solids having the ability to absorb the molecules
fixing
Acting by making firm, stable or stationary
flaking
Forming flakes
flaming
Burning with a flame
flange isolation
Isolating a flange from conducting electrical currents
flaring
Burning unsteadily with a wavering flame in the open air
flash separation
Physical separation to generate vapour and liquid from a mixture by lowering the pressure (flashing) and separation of the vapor from the liquid using gravity
flash welding
Resistance welding that produces coalescence at the faying surfaces of a butt joint by a flashing action and by the application of pressure after heating Is substantially completed
flashing-evaporating
Evaporating, suddenly or violently, by reduction of pressure
flashing-lighting
Lighting up suddenly or intermittently
flattening
Shaping by getting, moving, or extending in or into a flat position or form
floating
Resting on the surface of, or partly submerged in, a liquid
flocculating
Aggregating or coalescing, or causing to aggregate or coalesce, in small lumps or loose clusters or in a flocculent mass or deposit
flooding
Covering or causing to cover with water or other fluid
flotation
Physical separation by vigorous agitation of a fluid causing froth or foam formation followed by skimming it off together with solid particles attached to the froth or foam
flow controlling
Controlling the flow rate of fluid
flow measurement
Measuring a flow rate
flow regulation
Regulating a flow rate
flowing
Moving in or as if in a stream
fluid storage
Storing fluid in a container
fluid transport
Transporting fluid in some fashion
fluidising
Suspending a finely divided solid in a rapidly moving stream of gas or vapour so as to induce flowing movement of the whole
fluorescing
Process of producing, undergoing, or exhibiting emission of electromagnetic radiation
fluoridating
Adding a fluoride to
fluorinating
Treating or causing to combine with fluorine or any of certain compounds of fluorine
flushing
Cleansing or washing out by means of a rush of liquid
flux-cored arc welding
Arc welding where shielding is provided by a flux contained within the tubular electrode. Additional shielding may or may not be obtained from an externally supplied gas or gas mixture
fluxing
Treating with a substance applied to surfaces to be joined in order to promote fusion or softening
flying
Transporting or undergoing transportation through a vapour or gas
foaming
Forming a dispersion of gas or vapour in a liquid or solid material
focussing
Converging rays to a point
folding
Deforming by laying one part over another part of
following-happening
Happening as a result, effect, or natural consequence of
following-moving
Moving after something else in its path, in space and/or time
forbidding
Commanding against or contrary to
forcing
Pressing as indicated against resistance or inertia by some positive compelling force or action
forecasting
Predicting as a result of rational study and analysis of available pertinent data
forge welding
Solid state welding that produces coalescence of metals by heating them in air in a forge and by applying pressure
forging
Forming by a mechanical or hydraulic press with or without heat
formalising
Acting by giving formal status or approval to
forming
Acting by giving form or shape to
formylating
Inserting formyl into
forwarding
Sending from an intermediate place toward the place of destination
fouling
Process of becoming encrusted, clogged, or choked with a deposit substance
founding
Establishing on a firm basis
fractionating
Separating in fractions by crystallisation, distillation, or other processes
fracturing
Destroying as if by rupturing or tearing apart
fragmentating
Breaking into pieces
fragmentising
Breaking up or apart into pieces, sections, or fragments
fraising
Reaming out and enlarge
frame leakage protecting
Electrical protection in which the input energizing quantity is a current flowing through the path connecting the framework of the stated equipment in the protected section to earth
franchising
Granting a right to market a company's goods or services in a particular territory
freezing
Cooling below the freezing point
freighting
Loading with goods for transportation
frequency protecting
Generator protection against over/under speed
friction welding
Solid state welding that produces coalescence of materials under compressive force contact of workpieces rotating or moving relative to one another to produce heat
fueling
Providing with material for burning
full distance protecting
Distance protection generally having separate measuring elements for each type of phase-to-phase fault and for each type of phase-to-earth fault and for each zone measurement
full-wave phase comparison protecting
Phase comparison protection where the comparison is made twice per cycle. Comparison is made both on positive and negative half-cycles
fuming
Emitting a suspension of particles in a gas
functioning
Acting in a required or expected manner
funding
Providing for meeting a recurent future liability by systematic accumulation of a fund
funnelling
Moving or causing to move through or as if through a constricted passage
furfural extraction
Extracting by means of furfural as solvent
furnace brazing
Brazing where a furnace produces the heat necessary for welding. In furnace brazing, the flame does not contact the workpiece. Furnace brazing is used extensively where the parts to be brazed can be assembled with the filler metal preplaced near or in the joint. brazing operation
furnishing
Providing or supplying with what is needed
fuse protecting
Feeder protection using fuses
fusing-reducing
Reducing to a liquid or plastic state by heat
fusing-uniting
Uniting as if by melting together
fusion welding
Welding by involving the deposition of a small amount of molten steel within a gap between the components to be joined. When the steel solidifies, it welds the components together
gaining-increasing
Increasing in value or improve in some aspect
gaining-obtaining
Obtaining advantage or possession or reach a particular place in time
galling
Wearing away by friction
galvanic corrosion
Corroding electrochemically, which leads to the eating away of the outer metal surface in small craterlike depressions
galvanising
Coating with zinc, typically for iron and steel
ganging
Assembling or operating (mechanical or electronic parts) simultaneously as a group
gas absorption
Absorbing based on the principle of the taking in or assimilation of a gas by a liquid
gas chromatography
Chromatography applied to constituents in gas phase
gas detection
Detecting the presence or concentration of a certain gas
gas extraction
Extracting gas from a compressor between suction and final discharge for reasons of cooling, different gas destinations, etc.
gas freeing
Cleaning as defined in ISO 1998 definition 2-047
gas injection
Injecting gas in another substance
gas into gas mixing
Mixing a substance in gas phase into another substance in gas phase
gas into liquid mixing
Mixing a substance in gas phase into another substance in liquid phase
gas metal arc welding
Arc welding where shielding is obtained entirely from an externally supplied gas or gas mixture. The electrode wire for GMAW is continuously fed into the arc and deposited as weld metal. This process has many variations depending on the type of shielding gas, the type of metal transfer, and the type of metal welded
gas processing
Processing by conversing gas into one or more other gases which can be its parts or the results of a reaction
gas production
Producing natural gas from a reservoir
gas quench
Quenching by making use of a gas
gas refrigeration
Refrigeratind gas involving the use of a method where the refrigerant is heated
gas shielding
Shielding by means of gas
gas treating
Treating gas in order to remove one or more substances from it
gas tungsten arc welding
Arc welding process that produces coalescence of metals by heating them with an arc between a tungsten (non-consumable) electrode and the work piece. Shielding is obtained from a gas or gas mixture
gas welding
Fusion welding in which the required heat is obtained from a gas flame
gas-solid separation
Separating solids from a gas
gaseous diffusion
Diffusing gases through a porous barrier at a rate of speed in direct proportion the weight of the molecules, being used as the basis of a method for separating isotopes
gasifying
Converting a solid or liquid into gas as by heat or chemical process
gathering
Bringing together
gauging
Measuring accurately by means of a gauge
gearing-providing
Providing with gearing or connecting by gearing
gearing-readying
Readying for effective operation
gelling
Changing in or taking on the form of a colloid in a more solid form than a sol
generating
Making by a physical or chemical process
generation mix forecast
Forecasting the composition of a generation system at a given future date
generation of electricity
Generating electrical energy where that energy is obtained from some other form of energy
generator brake testing
Electrical rotating machine testing performed on a machine acting as a generator, by means of a dynamometer to determine the mechanical power input
generator differential protecting
Generator protection using a differential scheme
generator protecting
Fault protection against generator faults
generator rotor earth fault protecting
Generator protection against generator rotor earth faults
generator stator earth fault protecting
Generator protection against generator stator earth faults
generator winding temperature protecting
Generator protection against over temperature in the generator windings
geodetic surveying
Surveying the earth where account is taken of and corrections made for the curvature of the earth's surface {synonym for geodetic engineering)
geometrising
Assessing by using geometric constructions and principles
getting
Acting by coming in a state of having
giving
Acting by putting into the possession of another for his use without receiving a return
giving up
Acting by declaring incurable or insoluble
gliding
Moving smoothly, continuously, and effortlessly
global warming
Process of raising the year average temperature of the atmosphere
glowing
Being incandescent
glueing
Sticking or causing to stick tightly with or as if with a strong adhesive substance
going
Moving by beginning or maintaining a certain motion out or away
governing
Controlling, directing, or strongly influencing the actions and conduct of
granting
Permitting as a right
granulating
Forming or crystallising in grains, granules, or small masses
graphitising
Forming or causing to form graphite, or impregnating or coating with graphite
grating
Reducing to small particles by rubbing with something rough or indented
gravitating
Flowing by gravity
gravity separation
Physical separation based on forces caused by differential specific gravity of the substances separated
gravity thickening
Thickening by use of gravitation force
greasing
Lubricating with grease
gridding
Connecting in a grid
grinding-crushing
Crushing into small fragments or powder
grinding-surface treating
Surface treating by making smooth, sharp, or pointed
gritting
Covering or spreading with grit
grooving
Hollowing out in the form of a long narrow hollow or channel made in a surface
grounding
Connecting electrically to a large conducting body, used as a common return for an electrical circuit and as an arbitrary zero of potential
grouping
Combining in a group or in groups
grouting
Finishing with or as if with a thin mortar or plaster
growing
Increasing in size, substance, or any other way
guaranteeing
Assuring the quality of
guarding
Protecting from danger
guessing
Acting by forming a judgment or opinion of from insufficient, uncertain, or ambiguous evidence or on grounds of probability alone
guiding
Acting by directing, regulating, or managing toward some desirable end, course, way, or development
h2s corrosion
Corroding due to the presence of hydrogen sulfide
half-wave phase comparison protecting
Phase comparison protection where the comparison is made once per cycle in the positive or negative half-cycle
halting
Terminating the existence or progress of
hammering
Striking with or as if with a hammer
hampering
Restricting the movement of by bonds or obstacles
handing over
Transferring control of
handling
Doing to the point of completeness or success
hanging
Fastening to some elevated point without support from below
happening
To take place or come about either with or without plan, motivation, or apparent or assignable cause
hardening
Process of making harder, firmer, tighter, more compact, or more solid
harmonic testing
Electrical rotating machine testing to determine directly the value of one or more harmonics of the wareform of a periodic quantity associated with a machine, relative to the fundamental of that quantity
hatching
Marking with fine closely spaced parallel or crisscrossed lines in drawing or engraving, chiefly to represent shading
hauling
Transporting goods in a vehicle
having
Being in a condition or action of control, retaining, keeping, regarding, or experiencing as one's own
hazard analysis
Analysing the possibility of a risky event
hcn removal
Removing HCN by some process
heat tracing
Tracing by supply of heat
heat transfer
Transferring energy and entropy from one location to another, typically the exchange of heat between two materials
heat-bodying
Bodying (of oil), usually with resulting polymerisation
heat-sealing
Sealing off (two or more thermoplastic surfaces) by heat and pressure which make a seam, closure, or attachment
heat-setting
Fixing in a permanent form through the action of heat
heat-tracing
Tracing by applying heat
heat-treating
Treating by heating and cooling in a way that will produce desired properties (as hardness or ductility), typically of metal items to relief stress
heating
Increasing the temperature by applying heat
hedging
Surrounding so as to form a protective barrier
heightening
Increasing the physical height of
helping
Acting by giving assistance or support to
hiding
Acting by putting out of sight
high frequency induced bending
Bending by heat caused by high-frequency induction
high impedance differential protection
Electrical protection using a current differential relay whose impedance is high compared with the impedance of the secondary circuit of a saturated current transformer
high vacuum distillation
Vacuum distillation under high vacuum conditions
high-frequency welding
Resistance welding a resistance welding process that uses high-frequency to concentrate the heat at the desired location
hindering
Impeding any acting, moving, or starting
hiring
Engaging the temporary use of for a predetermined sum of money
hitting
Contacting suddenly and forcefully
hoisting
Moving from one place to the other by or as if by lifting
holding-having
Having possession or ownership of or have at one's disposal
holding-restraining
Restraining or limiting in motion or action
hollowing
Forming an indentation or concavity in
homogenising
Blending into a smooth mixture, or reducing to particles of uniform size evenly distributed
hooking
Fastening with or as if with a hook
hooking up
Installing in a suitable environment to function as part of a system
hosing
Acting by spraying, watering, washing, or drenching with water from a hose
hot pressure welding
Solid state welding that produces coalescence of materials with heat and the application of pressure sufficient to produce macro-deformation of the base metal
hot start-up
Starting up where an item is raised to speed, connected and loaded after a short period of being out of operation which did not change very much the thermal state of the item
hot-drawing
drawing-moving (as metal or nylon) while hot or with application of heat
hot-galvanising
Galvanising by dipping in molten zinc
hot-pressing
Pressing with a hydraulic oil press in which the contents are kept hot by steam radiators
hot-quenching
Quenching (a metal) in a hot bath
housing service
Serving by providing housing facilities
housing-acting
Acting by encasing, enclosing, or sheltering as if by putting in a house
human protecting
Protecting a human being
humidifying
Making humid
hydrate controlling
Controlling hydrate formation, typically to prevent forming of hydrates
hydrating
Forming a compound or complex ion by the union of water with some other substance
hydraulic to mechanical energy conversion
Energy conversion to convert hydraulic energy into mechanical energy
hydraulic to rotation energy conversion
Potential to mechanical energy conversion of hydraulic energy in a liquid into mechanical energy by expansion in a rotational device (i.e. in a hydraulic turbine)
hydraulic transport
Transporting by means of hydraulic means, such as a carrier gas or fluid
hydrochlorinating
Treating or combining with hydrochloric acid or hydrogen chloride
hydrocracking
Cracking of hydrocarbons in the presence of hydrogen
hydrodealkylating
Dealkylating using hydrogen
hydrodemetalising
Demetalising using hydrogen
hydrodenitrifying
Denitrifying using hydrogen
hydrodeoxidising
Deoxidising using hydrogen
hydrodesulphurising
Desulfurising using hydrogen
hydrofining
Chemical process for improving the quality of gasoline and other petroleum products by treating with hydrogen in the presence of a catalyst at a temperature below that at which decomposition takes place
hydroforming
Reforming high-octane gasoline or aromatic hydrocarbons (as toluenes, xylenes) by dehydrogenation and aromatisation of petroleum naphtas. Typically containing a high ratio of naphtenes in a stream of added hydrogen and in the presence of a catalyst
hydroformylation
Chemical process by the addition of a hydrogen atom and a formyl group to the molecule of a compound containing a double bond by reaction with hydrogen and carbon monoxide, the chief product being one or more aldehydes
hydrogen recovery
Recovering hydrogen from a mixture, usually by separation
hydrogenating
Treating with or exposing to hydrogen, or combining with hydrogen
hydrolysing
Reacting of water in which a bond in the reactant other than water is split, and hydrogen and hydroxyl are added with the formation of two or more new compounds, often with the inclusion of some types of hydration
hydrostatic testing
Non-destructive testing of strength and tightness by filling with test liquid and increasing the pressure up a level during a period of time given by design specification
identifying
Establishing the sameness in all that constitutes the objective reality of (a thing)
idling
Running or causing to run disconnected or unloaded so that power is not used for external or useful work
igniting
Beginning or causing to begin to burn or glow
ignoring
Refusing to take notice of
illuminating
Giving light to
illustrating
Claryfying by providing with visual features or other sensory aids
illuviating
Accumulating dissolved or suspended soil materials in one area or horizon as a result of eluviation from another
imaging
Calling up a mental picture of
imitating
Creating a likeness of an external appearance, behaviour, or characteristic
immantling
Covering or encircling with or as with a mantle
immersing
Acting by plunging or dipping in a liquid
immobilising
Fixing in place or position
impact assessment
Assessing the impact of something that occurs or might occur
impact testing
Testing the impact of an item according to specific impact test criteria
impacting
Causing to produce change
impairing
Causing to diminish in quantity, value, strength, or excellence
impeding
Constraining by interfering with or getting in the way of progress of
impelling
Giving a physical impulse to
impinging
Striking or dashing with a sharp collision
implementing
Acting by carrying into effect
imploding
To collapse inward as if from external pressure
importing
Inserting from an external source
impregnating
Process of filling, mixing, furnishing, or saturating with
improving
Enhancing in value or quality
impulse testing
Testing by applying to an electrically insulated component an aperiodic transient voltage having predetermined polarity, amplitude and waveform
in series and parallel operation
Operating with a number of items that partly operate in series and partly in parallel
in series operation
Operating with a number of items installed one topologically after the other
in-phase voltage controlling
Voltage controlling by means of an additional variable in-phase voltage component.
incandescing
Being or becoming white, glowing, or luminous with intense heat
incending
Igniting resulting in setting on fire
incinerating
Burning or causing to burn to ashes
incising
Cutting into
inclining
Deviating from the vertical or horizontal
including
Acting by placing, listing, or rating as a part or component of a whole or of a larger group, class, or aggregate
incorporating-forming
Forming into a legal corporation
incorporating-uniting
Uniting with or inserting into something already existent, usually to form an indistinguishable whole that cannot be restored the previously separate elements without damage
increasing
Making or becoming greater in some respect (as in size, quantity, number ,degree, value, intensity, power, substance)
incubating
Maintaining (a chemically active system) under controlled conditions for the development of a reaction
incuring
Becoming liable or subject to
indenting
Modifying by penetrating the edge of in such a way as to produce an outline marked by one or more recesses
indexing
Entering in a (usually) alphabetical list that includes items considered of special pertinence
indicating
Showing the probable presence, existence, nature, or course of
inducing
Moving by persuasion or influence
induction -electrical
Electrical processing by which an electrical conductor becomes electrified when near a charged body, by which a magnetizable body becomes magnetized when in a magnetic field or in the magnetic flux
induction brazing
Brazing where the workpiece acts as a short circuit in the flow of an induced high frequency electrical current. The heat is obtained from the resistance of the workpiece to the current. Once heated in this manner, brazing can begin. The parts are placed in or near a water-cooled coil carrying alternating current
inerting
Protecting against explosion or fire by introduction of inert gas
inferred measurement
Measuring with a result that is derived as a conclusion from facts or premises
influencing
Acting by having an effect on the condition or development of
informative conversation
Conversing starting with a question
informing
Communicating knowledge to
infrared brazing
Brazing that uses a high intensity quartz lamp as a heat source. The process is suited to the brazing of very thin materials
infrared spectroscopy
Spectroscopy sensitive to infrared radiation
infrastructure management
Managing an infrastructure to enable a service
initiating
Beginning or setting to go an activity
injecting
Inserting a substance into some material using some force
injection process
Processing in which a substance is injected into some material
injection steam generation
Steam generation for injection purposes
injuring
Damaging by inflicting bodily hurt or harm
inlet spraying
Spraying or injecting of liquid at a suction in a gas stream to be compressed, in order to avoid polymerisation on the impellers
inline blending
Blending of different basic grades of oil products by transporting them through one pipeline to a storage place while generating continuously the desired quality mixture
innershield welding
Arc welding that produces coalescence of metals by heating them with an arc between a filler metal electrode and the workpieces using no gas
inquiring
Seeking to know by asking or questioning
inserting
Acting by putting or inserting into something else
inspecting
Acting by viewing closely and critically in order to ascertain quality or state, detect errors, or otherwise appraise
inspection management
Managing inspection activities and procedures
installed spare operation
Operating with a spare item installed
installing
Acting by setting up for use or service
instantaneous protection
Electrical protection with no intentional delay
instating
Establishing, setting, or placing in a rank, office or status
instructing-commanding
Commanding with attention to clearness
instructing-teaching
Teaching in respect to a particular subject or area of knowledge
instrumented protection
Protecting by means of instrumentation
instrumenting
Equipping with instruments especially for measuring and recording data
insulating
Separating or shielding a conductor from conducting bodies by means of non-conductors so as to prevent transfer of electricity, heat, or sound
insulation resistance testing
Testing by measuring the resistance of electrical insulation under specified conditions
integrating-computing
Computing the mathematical integral of an algebraic function; a bounded integration is typically the equivalence of calculating the size of a surface area defined by the function
integrating-merging
Merging and consolidating in order to form into a more complete, harmonious, or coordinated entity often by the addition or arrangement of parts of elements
interconnected operation
Operating two or more networks interconnected by links (for example: lines, transformers, d.c. links) enabling the mutual exchange of electrical energy
interfering
Acting by hampering an activity or process
intermittent operation
Operating at regular or irregular intervals
intermittent service testing
Testing by subjecting a battery to alternate periods of on-load and off-load, according to a specified programme
intertrip function
Fault protection to provide tripping between related circuit breakers
intertripping underreach protection
Unit protection using telecommunication, which is an intertripping, generally distance protection, with underreach protection at each section end and in which a signal is transmitted when a fault is detected by the underreach protection
interturn testing
Testing by inducing a voltage of predetermined amplitude once or more often between adjacent turns of an electrically insulated component for the purpose of checking the integrity of the interturn insulation
inverting
Reversing in position, order, or relationship
investigating
Observing or studying by close examination and systematic inquiry
invitation to bid
Inviting potential bidders on the basis of a set of requirements
inviting
Requesting formally the presence or participation of
invoking
Acting by putting into effect or operation
ion exchange
Physical separation to purify a liquid by exchange of ions
isolated operation
Operating temporarily a discrete part of a power system in a stable state after network splitting
isolating
Separating from another material so as obtain or maintain pure or in a free state
isolation of a unit
Isolating a unit as an emergency measure consisting of the disconnection of that unit to maintain the supply of its own auxiliaries
isomerisation
Chemical process to change a substance into an isomeric form (as of the straight-chain hydrocarbon butene to the branched-chain hydrocarbon isobutane of higher octane number for gasoline)
jet flow
Flowing in the shape of a bundle
joining
Bringing or putting together so as to form a unit, close association, or relationship
judging
Deciding on the basis of an opinion formed by evaluation of available information
keeping
Holding(having) or preserving in a particular state
kinetic to mechanical energy conversion
Energy conversion to transform kinetic energy (speed) into mechanical energy
knowing
Having perception, cognition, or understanding of
laser beam arc welding
Arc welding where the heat obtained from the application of a concentrated coherent light beam impinging upon the joint
laser doppler anemometry
Anemometry based on the laser doppler effect
layering
Arranging of forming in layers
laying out
Planning in detail to create, fashion, execute, or construct according to plan
leaching
Process of dissolving out by the action of perculating liquid
leakage detection
Detecting a fluid leaking to an unwanted location
leaking
Passing through an opening usually by a fault or mistake
lean oil absorption
Absorbing by means of lean oil
learning
Acquiring knowledge or understanding of or skill in by study, instruction, or experience
lecturing
Teaching by giving a verbal explanation
lengthening
Extending in length
lessening
Reducing in size, extent, or degree
level controlling
Controlling the level of a substance behaving like a fluid into a storing device.
lieing
Being at rest in a horizontal position
lifting
Moving an item in upward direction
light load testing
Electrical rotating machine testing on a machine connected to its normal driven load or driving member in which (a) as a motor its shaft end power is restricted to the no-load loss of the driven member, (b) as a generator it provides a reduced power oup
lighting-acting
Acting by setting fire to
lighting-emitting
Emitting visible radiation
lightning
Discharging of atmospheric electricity accompanied by a flash of light and thunder
limiting
Acting by setting bounds or limits to
lining up
Arranging in an orderly linear fashion
liquefying
Converting to a liquid state by heat extraction
liquid chromatography
Chromatography where the constituents are in liquid phase
liquid into gas mixing
Mixing a substance in liquid phase into a substance in gas phase
liquid into liquid mixing
Mixing a substance in liquid phase into another substance in liquid phase
liquid pressure increase
Pressure increase in a liquid by adding mechanical work into it
listing
Making a list of
load flow calculation
Network calculation that is steady-state, and where the known variables are input and output powers at the nodes and possibly voltages at specified nodes
load shedding
Disconnecting deliberately preselected loads from a power system in response to an abnormal condition in order to maintain the integrity of the remainder of the system
load shedding protection
Electrical protection intended to decrease the system load in the case of an abnormal condition such as a frequency reduction
loading
Acting by placing or being a material weight or physical stress on
locating
Establishing in a particular spot or defining the position and orientation of a item relative to another item
locked-rotor testing
Electrical rotating machine testing on an energized machine with the rotor held stationary for the purpose of determining the locked rotor torque
longitudinal differential protection
Electrical protection of the operation and selectivity of which depend on the comparison of magnitude or the phase and magnitude of the currents at the ends of the protected section
losing
Failing to keep, maintain, or sustain
losing control
Losing restraining or directing influence over
losing generator excitation protection
Generator protection against loss of generator excitation
losing load
Losing load by a sudden reduction of the power demand of the network
losing-of-synchronism protection
Electrical protection intended to operate at a loss of synchronism at its beginning in a power system to prevent it from spreading
losing-of-tangent measurement
Dielectric testing that is the measurement of the dielectric loss of insulation at predetermined values of temperature, frequency, and voltage or dielectric stress
losing-of-voltage protection
Electrical protection intended to operate circuit-breaker(s) in the event of power system loss of voltage, usually to prepare for system restoration
low impedance differential protection
Electrical protection using a current differential relay whose impedance is not high compared with the impedance of the secondary circuit of a saturated current transformer
low-frequency dielectric testing
Dielectric testing performed at a low frequency between 0.1 Hz and 1.0 Hz
lowering-decreasing
Decreasing in value, amount, intensity, or degree
lowering-moving
Moving an item in downward direction
lubricating
Applying a lubricant to
mail service
Serving by collecting, transporting and delivering of mail
mailing
Sending by mail
main protection
Electrical protection expected to have priority in initiating fault clearance or an action to terminate an abnormal condition in a power system
maintaining
Keeping in a state of repair, efficiciency, or validity, preserving from failure or decline
maintenance management
Managing maintenance activities
maintenance support
Supporting maintenance activities
making
Acting by bringing into being
making up
Getting into condition for
maldistribution
Distributing incorrectly
malfunctioning
Functioning in a way which is not as required
malfunctioning of protection
Malfunctioning of a protection
management accounting
Accounting for managerial purpose
managing
Acting by exercising executive, administrative, and supervisory direction of
managing change
Managing change in an organisation
manipulating
Acting by treating, working, or operating with the hands or by mechanical means
manufacturing
Making wares or other material products by hand or machinery, especially when carried on systematically with division of labour
market analysis
Analysing a market
market development
Developing a market for a product
marketing service
Serving by supporting marketing activities
marking
Acting by setting apart by or as if by a mark or boundary
material inspection
Inspecting by verification of composition and properties of construction material
materials management
Managing the logistic aspects of material
measuring
Transforming an aspect of something in a value expressed in a unit of measure
mechanical back-to-back testing
Electrical rotating machine testing in which two identical machines are mechanically coupled together and the total losses of both machines are calculated from the difference between the electrical input power to one machine and the electrical output (p
mechanical degradation
Degrading with respect to some physical property due to mechanical reasons
mechanical engineering
Engineering of mechanical aspects of items used in a facility, especially of process equipment
mechanical expansion
Expanding due to mechanical forces, such as load or impact by fluid streams
mechanical process
Physical process intended to produce one or more discrete items from raw material by mechanical means
mechanical separation
Physical separation using mechanical means
mechanical to electric energy conversion
Energy conversion to convert mechanical energy into electrical energy
medical service
Serving by helping people in restoring their health
meeting
Acting by coming together with, especially at a particular time or place
mek dewaxing
Dewaxing by means of methyl ethyl keton
melting
Liquefying solid material by heat supply
membrane separation
Mechanical separation of a fluid by sorting the substances after the size of their molecules through a membrane
mercury detection
Detecting the presence of mercury
merging
Acting by causing to become combined, united, or coalesced
messenger service
Serving by tranporting messages
metal dusting
Cleaning by sprinkling with fine particles
metals emission
Emitting metals
metals removal
Removing metals, possibly by a demetallisation process
methanising
Converting to methane
microanalysis
Analysing chemicals on a small or minute scale that usually requires special, very sensitive, or small-scale apparatus
microscopy
Investigating with a microscope
microwave link protection
Unit protection using telecommunication using a microwave link
migrating
Moving by leaving one location in order to settle in another
milling
Shaping or dressing by means of a rotary cutter
mineral dressing
Treating of ores to produce one or more concentrates of valuable minerals and a tailings composed of waste and less valuable minerals
minimising
Optimising at the lowest possible level within the given constraints
mining
Excavating material from the soil in order to separate out valuable components
mitigate
Reducing severity, harshness, or hostility
mixing
Acting by stirring, shaking, or otherwise bringing together with a loss of separateness or identity
model testing
Testing the accuracy or correctness of a model
modelling
Forming or planning after a pattern
modernising
Adapting involving recent techniques, methods, or ideas
modifying
Acting by replacing, renewing, or changing items, or parts with another item or part of different type, make, material or design
modulating
Varying a characteristic in a periodic or intermittent manner for the transmission of information
modulating controlling
Controlling an element in which a continuous variation between two limits can be imposed on the output variable
molecular demolition
Demolishing of molecules and following separation of substances in a process stream for the purpose of changing the molecules properties
monitoring
Watching, keeping track of, or checking, typically for a special purpose
mooring
Fastening with or as if with cables, lines, or anchors
motor brake testing
Electrical rotating machine testing in which the mechanical output of a machine acting as a motor is determined by the measurement of the shaft torque, by means of a brake or dynamometer, together with the rotational speed
motor overload protection
Motor protection against motor overload
motor protection
Protecting an electric motor against adverse operational conditions
motor under voltage protection
Motor protection against undervoltage
motor winding thermal protection
Motor protection against high temperature in the motor windings
moulding
Forming by pouring a liquid or pressing a malleable substance into a cavity, form, or matrix
mounting
Attaching to a support
movement automation
Automating the operation of transport of production material
moving
Acting by changing position or posture
multiplexing
Transmitting several messages or signals simultaneaously on the same circuit or the same channel
multiplying
Computing the mathematical product of a number of numeric values
nace verification
Testing whether a material meets sour service material requirements
naming
Identifying an individual or class of individuals by a word or sound, or a combination of words and sounds by which he is regularly known or designated
naphthenic acid corrosion
Acid corrosion by naphthenic acid
natural process
Processing that is ruled by natural physical phenomena
negative sequence protection
Generator protection against phase imbalance leading to high negative sequence currents
network calculation
Computing system state variables of a network by using system parameters and other known system state variables
network conversion
Transforming a network into a calculated equivalent network
network splitting
Splitting, as an emergency measure, a power system into subsystems in each of which there is an attempted balance between generation and load to achieve isolated operation
neutral current protection
Electrical current protection in the earthing connection of the neutral of transformers, reactors or generators
neutral displacement protection
Electrical protection intended to operate when the power system voltage between the system neutral and earth is in excess of a predetermined value
neutralising
Making chemically neutral
news service
Serving by providing news
no-load testing
Electrical rotating machine testing in which the machine runs as a motor providing no useful mechanical output (power) from the shaft end
noise-level testing
Electrical rotating machine testing taken to determine the acoustic noise level produced by a machine under specified conditions of operation and measurement
noising
Making a noise
non-atmospheric storage
Fluid storage under non-atmospheric pressure, being a high pressure or a vacuum
non-destructive testing
Testing without destruction of the item
non-naphthenic acid corrosion
Acid corrosion by non-naphthenic acid
non-phase segregated protection
Electrical protection, generally unit protection , which is not phase selective
non-unit protection
Electrical protection whose operation and section selectivity are dependent on the measurement of electrical quantities at one end of the protected section by the measuring relays and, in some cases, on the exchange of logic signals between the ends
non-unit protection using telecommunication
Non-unit protection in which signals are transmitted by telecommunication to trip permissively or to intertrip remote circuit-breaker(s) for an internal fault or to block tripping for an external fault
normalising
Making conform to a norm or standard
object-oriented programming
Programming that focuses on the definition of objects and their behaviour
obscuring
Concealing or hiding from view as by or as if by covering wholly or in part
observing
Watching carefully especially with attention to details or behaviour for the purpose of arriving at a judgment
obstructing
Hindering from passing, action, or operation
obstruction by gas
Obstructing a fluid stream partly or completely by a gas barrier
obstruction by liquid
Obstructing a fluid stream partly or completely by a liquid barrier
obstruction by solid
Obstructing a fluid stream partly or completely by a solid barrier
obtain agreement with regulatory bodies
Obtaining agreement that the intended design, construction, commissioning, operation, and decommissioning of the proposed project will comply with requirements of the regulatory body
obtaining
Acquiring by planned action or effort
occupying
Being in a certain position or space
occurring
Activity of presenting itself, taking place, or coming to pass
offering
Acting by bringing or putting forward for action or consideration
offshore engineering
Engineering of facilities in a sea or sea-like environment
oil accounting
Accounting the material balance of oil over time
oil characterisation
Characterising the composition and properties of oil
oil extraction
Deoiling as defined in ISO 1998 definition 3-032
oil movement
Moving oil products
oil pollution
Polluting with oil
oil processing
Processing that converts one type of oil to another
oil production
Producing oil from a reservoir
oil spill
Spilling oil inadvertently
oil tracing
Tracing by using oil as heat transfer medium
oil-water separation
Physical separation of oil from water
on/off controlling
Controlling in binary mode, where one of two steps is assigned the value zero
online catalyst replacement
Replacing catalyst without stopping the process
open fluid transport
Fluid transport of substance open to air
open-circuit testing
Electrical rotating machine testing in which a machine runs as a generator with its terminals open-circuited
opening
Making available for entry or passage
operating
Causing to function
operations testing
Testing to verify proper operation of an item with reference to the process design
opposing
Acting by offering resistance to
optical link protection
Unit protection using telecommunication using an optical link
optimising
Making as perfect, effective, or functional as possible
order processing
Processing of purchase orders
ordering
Directing or requiring something to be done
osmosis
Moving a solvent through a semipermeable membrane (as of a living cell) into a solution of higher solute concentration that tends to equalize the concentrations of solute on the two sides of the membrane
otto process
Converting internal chemical energy from a fluid in mechanical energy by controlled combustion in a linear engine
overcurrent detection
Detecting that the value of current in a circuit exceeds a predetermined value for a specified length of time
overcurrent protection
Electrical protection intended to operate when the current is in excess of a predetermined value
overflowing
Moving by running or flowing over bounds
overhauling
Repairing as to restore to satisfactory working order
overload protection
Electrical protection intended to operate in the event of overload on the protected section
overreach protection
Electrical protection, generally distance protection, when the shortest zone setting corresponds to a reach longer than the protected section
overspeed testing
Electrical rotating machine testing on a machine rotor to demonstrate that it complies with specified overspeed requirements
overvoltage protection
Electrical protection intended to operate when the power system voltage is in excess of a predetermined value
oxidising
Changing (a compound) by increasing the proportion of the electronegative part, or changing (an element or ion) from a lower to a higher positive valence
oxyacetylene welding
Fusion welding that is an oxyfuel gas welding process that produces coalescence of metals by heating them with a gas flame
packaging
Enclosing in a package or covering
packing-covering
Covering an item with protection material that protects the item against physical damage
packing-filling
Filling with packing
packing-gathering
Gathering by making in a compact bundle or gathering in tight formation
packing-loading
Loading with a pack
painting
Covering by means of paint
parallel operation
Operating interconnected power systems in synchronism, or operating network components connected in parallel, such as lines, transformers, and generators
parameter estimation
Estimating the value of a parameter
parking service
Serving by providing for parking people's vehicles
partial discharge inception testing
Testing by measuring the lowest voltage at which partial discharges occur at the surface of the electrical conductors or outside their insulation
passing-changing
Changing from one quality, state or form to another
passing-letting
Letting go
passing-transferring
Acting by going or making way through
passivating
Making inactive or less reactive
patenting
Acting by obtaining or granting a privilege, right, or license by patent
paying
Transferring a sum of money or an equivalent good or service to compensate for a delivered good and/or service
percolating
Passing through a permeable substance
percussing
Striking two hard materials together
percussion
Tapping the surface of a body part to learn the condition of the parts beneath by the resultant sound
performance testing
Testing to verify proper operation of an item with reference to the design
performative conversation
Conversing resulting in action or performed action
performing
Acting by carrying out an action or a pattern of behaviour
periodic continuous service testing
Testing by subjecting a battery to several different discharge currents, according to a continuous, repetitive, specified programme
permissive overreach protection
Unit protection using telecommunication, generally distance protection, with overreach protection at each section end and in which a signal is transmitted when a fault is detected by the overreach protection
permissive protection
Electrical protection, generally distance protection, in which the receipt of a signal permits the local protection to initiate tripping
permissive underreach protection
Unit protection using telecommunication, generally distance protection, with an underreach protection at each section end and in which a signal is transmitted when a fault is detected by the underreach protection
permitting
Giving leave or an opportunity
personal protection
Protecting a person against safety and health hazards
persuading
Demonstrating or proving something to be true, credible, essential, commendable, or worthy
phase comparison protection
Electrical protection of which the operation and selectivity depends on the comparison of the phase of the currents at each end of the protected section
phase segregated protection
Electrical protection, generally unit protections, that is phase selective
phase transition
Physical processing of transformation of a thermodynamic system from one phase to another
phase-fault protection
Electrical protection intended to operate for multi-phase power system faults
phase-sequence testing
Electrical rotating machine testing taken to determine that the phase sequence of a polyphase winding is correct
physical processing
Processing with the purpose to produce one or more substances or items from raw material being one or more other substances or items. Typically used for non mechanical and non chemical processes
physical separation
Separating by means of physical and not chemical or mechanical means
physical splitting
Physical separation of a process stream by dividing it into two or several streams (i.e. by means of a tee)
pickling
Acting by treating, preserving, or cleaning in or with a pickle
piercing
Making a hole in or through
pigging
Cleaning by moving a pig-like body through an item, typically through a pipeline (pig = brush, swab, or scraper pushed or pulled through a duct or pipe to clean it )
piling-driving
Driving piles into or supporting or strengthening with piles
piling-placing
Placing or laying in a pile
pilot wire feeder protection
Relay protection according to a differential protection scheme based on a pilot wire running between each end of the feeder
pilot wire protection
Unit protection using telecommunication using metallic wires
piloting
Testing by trying out on a small scale
pipe burst
Bursting of a pipe
placing
Putting into or as if into a particular position
planning
Acting by defining and scheduling activities and/or physical and/or (bio)chemical processes
plant emission
Emitting (in most cases inadvertently) material by the operation of a plant
plant optimisation
Optimising the operation of a plant with respect to an objective function. ThIs can be an economic function or quantity, quality and/or energy objective function
plasma arc welding
Arc welding process that produces a coalescence of metals by heating them with a constricted arc between an electrode and the work piece (transferred arc) or the electrode and the constricting nozzle (non-transferred arc). Shielding is obtained from the hot ionized gas issuing from the orifice which may be supplemented by an auxiliary source of shielding gas. Shielding gas may be an inert gas or a mixture of gases. Plasma welding has been used for joining some of the thinner materials
plasma mig welding
Arc welding that is a combination of plasma arc welding and gas metal arc welding
platforming
Reforming gasoline with a supported catalyst containing some platinum that promotes dehydrogenation of naphtenes to aromatic hydrocarbons, isomerisation and cracking of paraffin hydrocarbonds, and desulfurisation
plugging
Fouling by becoming plugged or filled with or as if with a plug
pneumatic to mechanical energy conversion
Energy conversion to convert pneumatic energy into mechanical energy
pneumatic to rotation energy conversion
Potential to mechanical energy conversion of pneumatic energy in a vapour into mechanical energy by expansion in a rotational device (i.e. in a gas turbine)
poisoning
Acting by destroying, harming, or otherwise affecting adversely by or as if by poison
polarity testing
Electrical rotating machine testing taken on a machine to demonstrate the at the relative polarities of the windings or permanent magnet poles are correct
polishing
Making smooth and glossy by a mechanical process, usually by friction
polluting
Making physically impure or unclean
pollution controlling
Controlling the quantity and quality of pollution
position with normal pressure
Positioning of an item with pressure normal to facing surfaces
positioning
Putting in a proper place
positive displacement
Transporting a fluid according to the positive displacement principle, implying that the pressure in the substance transported is increased
post-implementation review
Reviewing an implementation after its completion
potential to mechanical energy conversion
Energy conversion by transformation of potential energy into mechanical energy
power control operation
Operating at changing power following instructions received from a secondary control device
power conversion
Energy conversion from electrical or mechanical energy into another form
power generation
Generating electrical energy by conversion from another type of energy
power system controlling
Controlling the power in a power system
power-line-carrier protection
Unit protection using telecommunication using power-line carrier
power/frequency controlling
Secondary controlling of active power in a system of generating sets in response to variations in system frequency and to the variations in the grand total of active power exchanged with the interconnected systems
practicing
Performing or working at repeatedly, often, customarily, or habitually so as to become proficient
precipitating
Separating a substance from a solution in a concrete state as a result of a chemical or physical change
precommissioning
Verifying completeness and mechanical construction of an item with reference to the mechanical design
predicting
Acting by declaring or indicating in advance
prefabricating
Fabricating an item under optimised conditions at location other than where it has to be installed
preheating
Heating prior to thermal or mechanical treatment
preparing
Making ready beforehand for some purpose
prequalifying
Qualifying in advance of final selection
presenting
Acting by bringing or introducing into the presence of someone
preserving
Keeping for future use whilst protecting from unwanted happenings
pressing
Acting by bringing pushing or thrusting force to bear on something in direct contact
pressure controlling
Controlling the pressure in a predefined process segment
pressure decrease
Decreasing the pressure in a processing system/segment
pressure deformation
Deforming by applying pressure
pressure increase
Increasing the pressure in a processing system/segment
pressurising
Applying pressure to
pressurized containment
Non-atmospheric storage under above-atmospheric pressure
pretreating
Treating before the main process starts
preventing
Acting by keeping from happening or existing, esp. by precautionary measures
preventive maintenance
Maintaining in order to reduce the probability of failure or degradation of the functioning of an item during operation. Typically carried out at regular intervals or according to prescribed criteria
primary controlling of a speed of generating set
Power system controlling of the speed of a generating set by its individual governor which ensures that the driving torque is a function of the system frequency
priming
Putting into working order by filling or charging with something
process
Activity consisting of a series of actions or operations
process controlling
Controling a process in such a manner that the stream properties stay within the ranges dictated by the process case
process design
Designing a process in concept
process engineering
Engineering of a process and its process conditions
process integration
Integrating several processes in order to save energy
process simulation
Simulating a physical and or (bio)chemical process
process supervision
Supervising the execution of a process
processing
Acting by subjecting to a particular method, system, or technique of preparation, handling, or other treatment designed to effect a particular result
procuring
Buying to specification
producing
Making or creating to be available for satisfaction of human wants
programming
Coding in accordance to the rules of a computer language
project
Business process consisting of a set of coherent activities intended for a specific purpose and managed as a whole
project preparation
Preparing for the exucution of a project by determination of the feasibility of options and by identification of a preferred option
projecting
Reproducing a spatial object upon a plane or curved surface or a line by projecting its points
projection welding
Resistance welding that produces coalescence by the heat obtained from the resistance to the flow of the welding current
prolonging
Extending in duration
propagating
Spreading out or causing to spread out and affecting a greater number or greater area
protecting
Preventing the occurrence of unwanted happenings by holding securely in one's possession, custody, or control.
protection using telecommunication
Electrical protection requiring telecommunication between the ends of the protected section in a power system
provide resources
Providing personnel, facilities, and funding for deployment in order to perform activities
providing
Supplying what is needed for sustenance or support
proving
Establishing the truth, correctness, or validity of
public relations
Business process of inducing the public to have understanding for and goodwill toward a cause, person, firm, or institution
publishing
Producing or releasing for dissemination to the public
pull-in testing
Electrical rotating machine testing on a synchronous motor which is pulling into synchronisation from a specified slip and with a specified intertia, for the purpose of determining the pull-in torque
pulling
Acting by exerting force upon so as to cause or tend to cause motion in the direction trailing the force
pulsating
Alternating a quantity (as pressure, volume, or voltage)
pumped storage
Storing water, after having raised its hydrostatic height by pumping, in one or more hydroelectric installations for later use for the generation of electricity
pumping
Creating a pressure difference in a fluid stream in order to create its movement
purchasing
Getting possession or ownership of by giving or agreeing give money or its equivalent in exchange
purging
Freeing of something unwanted
purifying
Freeing of undesirable elements by removing material from a mixture, typically creating a material with a higher quality and value
pushing
Exerting force upon so as to cause or tend to cause motion in a direction ahead of the force
putting
Acting by placing in a specified position or relationship
pyrolysis
Converting by the action of heat
quadrature voltage controlling
Voltage controlling by means of an additional variable quadrature voltage component.
qualifying
Assessing evidence of competence for a specific type of task
quality assurance
Assuring that standards of quality are being met by systematically monitoring and evaluating the various aspects of a project, service, or facility
quenching
Cooling rapidly by mixing fluids or by sumping material into a fluid
radial operation
Operating where each point of a given part of a network is fed along one path only
radiating
Acting by sending out in or as if in rays
radiographic testing
Non-destructive testing using radiography
radiography
Non-destructive testing by means of making radiographs
railing
Providing with rails or a railing
ranking
Acting by allocating a value on a scale to something according to criteria for one or more of its aspects
ratcheting
Moving or operating by a ratchet
rating
Estimating or judging the value or quality of
ratio controlling
Controlling in order to keep the ratio of process variables constant
reacting
Exerting a reciprocal or counteracting force or influence responding to a stimulus
reactive power compensation
Power system controlling to optimize the transmission of reactive power in the network as a whole
reactive-power voltage controlling
Voltage controlling by the adjustment of reactive power generation in a power system
readying
Making ready
reaming
Widening the opening of
receiving
Acquiring in a passive way
reclaiming
Obtaining from a waste product or by-product
recognising
Acting by knowing and remembering upon seeing
recommending
Presenting as worthy of acceptance or trial
reconciling
Making consistent or congruous
recording
Registering on something in such a way that it can be subsequently reproduced
records and information management
Document management of historic data and documents
recovering
Restoring to usefulness
recursion modelling
To model by the determination of a succession of elements (as numbers or functions) by operation on one or more preceding elements according to a rule or formula involving a finite number of steps
recycling
Passing again through a cycle of changes or treatment
reduced throughput operation
Operating below normal throughput
reducing
Diminishing in size, amount, extent, or number
reeling-forming
Forming smooth a surface, typically to round up and smooth the inside and outside surface of a pipe
reeling-winding
Winding on a reel, or to roll up into a pack
refilling
Filling again or becoming filled again
reflecting
Acting by throwing back light or sound
reforming
Treating as defined in ISO 1998 definition 3-009
refrigerating
Process of freezing or chilling for preservation
refusing
Declining to accept
regenerating
Restoring original strength or properties
registering
Making an accurate entry of in a formal record
regulating
Directing or governing according rule
regulatory compliance
Complying with regulations of an authority
reinstating
Restoring to a proper condition
relaxing
Making less severe or stringent
relay protection
Feeder protection using relays
releasing
Acting by setting free from restraint, confinement, or servitude
releasing a relay
Releasing a relay out of its operational condition and/or resetting it to its initial condition
relieving
Freeing from a burden or setting free from an obligation, condition, or restriction
remedying
Correcting or counteracting something wrong
remote backup protection
Backup protection located in a substation remote from that substation in which the corresponding main protection is located
removals service
Serving by removing goods, typically furniture
removing
Acting by changing the location, position, station, or residence of
removing from a collection
Removing an item from a collection of items
removing from an assembly
Removing an item from an assembly
removing isolation
Removing isolation in order to allow input or output of process material or utility to or from an item
remunerating
Paying an equivalent for a service, loss, or expense
renewing
Revising by replacing old parts with new ones
repairing
Restoring by bringing an item back in its original state (shape and properties) or in a revised design state
replacing
Acting by putting something new in the place of
reporting
Acting by giving an account of
representing
Presenting by means of something standing in the place of
reproducing
Producing something of the same class, kind, or nature as the original
reprography service
Serving by reproducing documents
requesting
Asking for something
requiring
Demanding as necessary or essential, or having a compelling need for
requisitioning
Requiring to be furnished
research and development
Business process aimed at the definition of a new way to produce one or more substances from raw material (one or more other substances) until a release for application
researching
Acting by conducting a critical and exhaustive investigation or experimentation having for its aim the discovery of new facts and their correct interpretation, the revision of accepted conclusions, theories and laws, or the practical application of same
resetting
Putting back in a previous position
resetting a relay
Resetting a relay so as to re-attain an initial condition or a release condition.
resistance brazing
Brazing where the heat necessary for resistance brazing is obtained from the resistance to the flow of an electric current through the electrodes and the joint to be brazed. The parts of the joint are a part of the electrical current
resistance seam welding
Solid state welding that is a resistance welding process that produces coalescence at the faying surfaces of overlapped parts progressively along a lenght of a joint
resistance spot welding
Solid state welding that is a resistance welding process that produces coalescence at the faying surfaces of a joint by the heat obtained from resistance to the flow of welding current through the workpieces from electrodes under pressure
resistance testing
Electrical rotating machine testing to measure the resistance of a winding, using direct current
resistance welding
Welding by producing coalescence of metals with the heat obtained from resistance of the work to electric current in a circuit of which the work is a part, and by the application of pressure
resonating
Vibrating with large amplitude in a mechanical or electrical system, as a repetitive pattern that resembles resonance, caused by a relatively small periodic stimulus of the same or nearly the same period as the natural vibration period of the system
responding
Reacting in response
resting
Lieing fixed or supported, free from action or motion
restoring
Putting or bringing back into existence or use, or into a former or original state
restraining
Restricting to or in respect to a particular action or course
restricted earth-fault protection
Earth-fault protection in which the residual current from a set of three-phase current transformers is balanced against the residual output from a similar set of current transformers or, more usually, from a single current transformer located on the earthing
restricting
Acting by setting bounds or limits to
resuming
Beginning again after an interruption
resynchronising
Synchronising a synchronous machine such that it recovers the synchronous operation after having operated out of synchronism
retailing
Selling in small quantities directly the ultimate consumer
retardation testing
Electrical rotating machine testing in which the losses in a machine are obtained by plotting the slowing down of the machine when only machine inherent ventilation and friction losses are present
retrieving
Remedying the evil consequences of
returning
Acting by bringing, sending, or putting back to a former or proper place, or passing back to an earlier possessor
revamping
Revising by bringing up to date or by fitting to a new need
reverse osmosis
Osmosis of through a semipermeable membrane when pressure is applied to a solution on one side of it
reverse power protection
Generator protection against reverse power flow (motoring)
reversing
Changing to the opposite direction or polarity
reversing a battery
Reversing the normal polarity of a battery
reversing a battery cell
Reversing the normal polarity of a cell
reviewing
Acting by giving a critical evaluation of
revising
Improving by renewal, amendment or correction
revolving
Turning around or causing to turn around on or as if on an axis
ring closing
Transiting from radial operation to ring operation, or to establish a ring connection
ring opening
Transiting from ring operation to radial operation, or to break a ring connection
ring operation
Operating in a manner where each point of a given part of a network is fed from one or two sources along two distinct paths
ripping
Acting by cutting, tearing, or splitting apart or open
rising
Increasing in quantity or number
risk analysis
Analysing the risk of un undertaking
road transport
Transporting along roads
roll welding
Solid state welding that produces coalescence of metals by heating and by applying pressure with rolls sufficient to cause deformation at the faying surfaces
rolling
Forming by pressing one or more rolls over the item
roof covering
Covering a roof with material that gives a particular protection
rotary piercing
Piercing according to the principle of helical rolling
rotating
Turning about an axis or a center
rotation testing
Electrical rotating machine testing to determine that the rotor rotates in the specified direction and that the terminal marking is correct
routine testing
Electrical rotating machine testing to which each individual machine is subjected during or after manufacture to ascertain whether it complies with certain criteria
routing
Planning a path through a network
rubbing
Moving along the surface of a body with pressure
running
Acting by allowing a process to take place during a certain period of time
running away
Running out of control
rupturing
Tearing apart by force
safeguarding
Protecting against failure, breakage, or accident
safety service
Serving by increasing safety
sampling
Taking a part of a material for judging its quality
sampling testing
Electrical rotating machine testing on a number of machines taken at random from a batch
satisfying
Conforming to requirements
scale correction
Correcting a scale by calibration
scanning
Examining especially systematically with a sensing device (as a photometer or a beam of radiation) usually to obtain information and/or to pass over in the formation of an image
scanning electron microscopy
Electron microscopy by which the beam of focused electrons moves across the object with the secondary electrons produced by the object and the electrons scattered by the object being collected to form three-dimensional image on a cathode-ray tube
scheduled operation
Operating at one or more successive steady states at rates or throughputs which are previously specified, within a given period of time
scheduling
Acting by preparing a plan indicating the objective proposed, the time and sequence of each operation, and the resources required
scouting study
Studying by exploring options and evaluate them for suitability for further investigation
screwing
Connecting by means of a screw
scrubbing
Removing any impediments from
seal leakage detection
Detecting whether a seal is leaking
sealing off
Closing tightly so as to eliminate ingress or egress
searching
Acting by looking into or over carefully and thoroughly in an effort to find something
secondary controlling of active power in a system
Power system controlling of the active power supplied to the network by particular generators
securing
Acting by relieving from exposure to danger
security service
Serving by warranting the security of goods
sedimenting
Settling by forming or depositing sediment
seeking
Trying to find something
segment-to-segment testing
Electrical rotating machine testing in which the resistance between adjacent commutator segments is measured in order to check that the winding is satisfactory
segregating
Separating or setting apart from others or from the general mass
self-checking
checking-verifying automatically without an external trigger
self-priming
Priming without external energy or tools
self-synchronisation
Synchronising an unloaded and unexcited synchronous machine that is excited either at the same time as it is coupled to the system or shortly afterwards
selling
Acting by disposing of something by sale
sending
Acting by directing, ordering, or requesting to go
sensing
Observing by touching with an object sensitive for an intended property
separate network operation
Operating a power system disconnected from neighbouring power systems
separating
Acting by setting or keeping apart
sequence controlling
Controlling a sequence of activities
sequence of operations
Operating in a number of smaller operations executed one after the other
series compensation
Power system controlling to reducte the series impedance of a line by the insertion of series capacitors
service
Serving in performing work asked and paid for by someone else
service output testing
Testing by measuring the service output of a battery
serving-acting
Acting by furnishing or supplying with something needed or desired
setting
Acting by putting in position or at a value
settling
Separating by deposit of a heavier component
shaft-voltage testing
Electrical rotating machine testing taken on an energized machine to detect the induced voltage capable of producing shaft-currents
shaping
Acting by giving a particular form or shape to
shielded metal arc welding
Arc welding where shielding is obtained from decomposition of the electrode covering. Pressure is not used and filler metal is obtained from the electrode
shielding
Protecting with or as if with a shield
shock loading
Loading suddenly
short-circuit calculation
Network calculation where the currents and voltages within a network subjected to a short circuit are calculated
showing
Acting by causing or permitting to be seen
shrinking
Decreasing in size, becoming compacted
shunt compensation
Power system controlling to change the reactive power at a point of a network by means of reactors, capacitors or synchronous compensators, shunt connected to the network
shutting down
Changing a process from an operational state to an idle state
silencing
Decreasing the level of sound from a device generating noise
simulating
Making an imitative representation of the functioning of one system or process by means of the functioning of another
single operation
Operating where one performer executes the activity
single-shot reclosing
Automatic reclosing with no repeat if unsuccessful
sloping
Inclining from the horizontal
smoothing
Making smooth, level, or even on the surface
soldering
Uniting or making whole by means of a melted metal or metallic alloy
solid in gas mixing
Mixing solids and gases together
solid in liquid mixing
Mixing solids and liquids together
solid state welding
Welding by producing coalescence at temperatures essentially below the melting point of the base materials being joined without the addition of a brazing filler metal. Pressure may or may not be used
solidifying
Making or becoming solid, compact, or hard
solution analysis
Analysing a solution, typically generated by problem solving software
solution loss
Losing solution material
solvent extracting
Extracting as defined in ISO 1998 definition 3-021
specifying
Defining explicitly or in detail
spectroscopy
Analysing by visual or photographic observation and the precise determination of wave lengths
spilling
Acting by causing or allowing to splash, pour, or fall out and be wasted, lost or scattered
splitting
Separating from end to end, especially sharply or suddenly or with force by cleaving or forcing apart
sponsoring
Acting by assuming responsibility for some other person or thing
spraying
Spreading of fluid in droplets
spreading
Acting by expanding or opening over a larger area
squeezing
Exerting pressure on opposite sides of
stabilising
Transforming a material from an unstable state to a more stable state; for fluids typically by removing volatile components from a mixture
standardising
Acting of bringing in conformity with a standard
standby protection
Electrical protection normally not in service but which can be switched into service to replace another protection
star-polygon conversion
Network conversion by reduction of the number of nodes
starting
Begining by coming or causing to come in being, activity, or operation
starting testing
Electrical rotating machine testing on a machine while it is accelerating from zero speed to load speed, for the purpose of determining the starting torque
starting up
Starting an operation or motion
state estimating
Network calculation where the most probable currents and voltages within the network at a given instant are calculated by solving a system of mostly non-linear equations whose parameters are obtained by means of redundant measurements
state transiting
Transiting or converting from one state to another
static pressure increase
Pressure increase in a gaseous fluid
stating
Acting by expressing in words
steam cracking
Cracking as defined in ISO 1998 definition 3-036
steam generation
Generating steam from water while consuming energy
steam injection
Injection process where steam is injected in another material
steam tracing
Heat tracing by using steam to transport and supply heat
stewarding
Managing carefully and responsibly something entrusted to one
sticking
Being or remaining fixed or attached
stirring
Acting by passing an object through a substance with a continued circular movement for the purpose of mixing, blending, dissolving, cooling, or preventing sticking
stock accounting
Accounting the quantity of material in stock, typically over time
stopping
Terminating something that happens
storage testing
Testing by measuring the characteristics of a battery, such as service output, open circuit voltage, short-circuit current, after specified conditions of storage
storing
Placing or leaving in a location for preservation or later use or disposal
stream characterisation
Characterising the composition and properties of a stream
stress corrosion
Corroding due to stress
stress relieving
Relieving stress from a material, typically after a process of deformation or welding
stressing
Subjecting to stress
stretching
Extending in length
striking
Acting by coming into contact or collision
stripping
Separating volatile components by means of a gas or vapour
stud arc welding
Arc welding that produces coalescence of metals by heating them with an arc between a metal stud or similar part and the work piece. When the surfaces to be joined are properly heated they are brought together under pressure. Partial shielding may be obtained by the use of ceramic ferrule surrounding the stud
studying
Acting by reading in detail especially with the intention of gaining knowledge about a subject
subjecting
Acting by bringing under control or dominion
submitting
Sending or committing for consideration, study, or decision
substation local backup protection
Backup protection that is energized from instrument transformers located within the same substation as the corresponding main protection and not associated with the same primary circuit
substituting
Replacing with another
subtracting
Computing the sum of a numeric value and the negative value of one or more other values
sucking
Drawing something in by or as if by producing a vacuum
sudden short-circuit testing
Electrical rotating machine testing in which a short-circuit is suddenly applied to the armature winding of a synchronous machine under specified operating conditions
sulphur recovery
Recovering sulphur from a fluid, typically sulphur absorbed in that fluid in a sulphur removal process
superimposed component protection
Electrical protection which depends on the measurement of comparison of extracted superimposed quantities, i.e. on the differences between appropriate prefault and fault value of current, voltage, etc.
supervising
Acting by coordinating, directing, and inspecting continuously and at first hand the accomplishment of
supervisory controlling
Process controlling by controllingling lower levels of controlling
supplying
Acting by making available
support isolation
Isolating a support from conducting electrical currents
support service
Serving by supporting people in their activities
supporting
Holding up or in position
surface analysis
Analysing a surface
surface protection
Protecting a surface, typically by a layer of coating
surface treating
Treating in order to improve the quality of a surface
surging
Rising suddenly to an excessive or abnormal value
surrounding
Being around, next, near, or adjacent to
surveying
Examining with reference to condition, situation, or value
suspending
Acting by keeping from falling or sinking by some invisible support (e.g. buoyancy)
sustained short-circuit testing
Electrical rotating machine testing in which a machine runs as a generator with its terminals short-circuited
sweetening
Treating as defined in ISO 1998 definition 3-004.
switched distance protection
Distance protection generally having only one measuring element for all power system faults and/or for all zones
switching
Changing discretely from one state to another
swot analysis
Analysing strengths, weaknesses, opportunities and threats
synchronisation of two electrical systems
Synchronising two systems with respect to their frequency and to their voltage magnitude and voltage phase for interconnection purposes
synchronising
Making synchronous in operation i.e. happening, existing, or arising at precisely the same time
synthesising
Combining or producing by synthesis
system demand controlling
Controlling the power demand of the consumers on a power system
system management
Managing a system such that it is effectively operated so as to assure adequate security of performance at minimum cost
taking
Acting by entering into or arranging for possession, ownership, or use of
tapping
Striking lightly with a slight sound
taxing
Acting by imposing or collecting a charge by legal process or authority
teaching
Acting by providing instruction by precept, example, or experience
tearing
dividing-separating forcefully or violently
telesales
Selling using a telecommunication technique
temperature controlling
Controlling a temperature
temperature decrease
Decreasing the temperature in a system
temperature increase
Increasing the temperature in a system
temperature-rise testing
Electrical rotating machine testing undertaken to determine the temperature-rise of one or more parts of a machine under specified operating conditions
tendering
Making a bid or tender
terminal automation
Automating by conversion of a terminal to (largely) automatic operation
terminating
Ending formally and definitely
test run
Testing, typically by operating as stable as possible
testing
Validating that a physical object satisfies specified criteria; typically by verification of a property value of the physical object
thermal conversion
Converting by the application of heat and pressure
thermal cracking
Cracking by the application of heat and pressure.
thermal drying
Drying by the application of heat and pressure
thermal insulation
Insulating in order to provide protection against loss of heat
thermal protection
Protecting against unwanted temperatures
thermite welding
Fusion welding that produces coalescence of metals by heating them with superheated liquid metal from a chemical reaction, with or without the application of pressure
thickening
Concentrating by removal of fluid
titrating
Process of determining the concentration of a dissolved substance in terms of the smallest amount of a reagent of known concentration required to bring about a given effect in reaction with a known volume of the test solution
torch brazing
Brazing performed by heating the parts to be brazed with an oxyfuel gas torch or torches; depending upon the temperature and the amount of heat required, the fuel gas may be burned with air, compressed air, or oxygen
touching
Acting by bringing one bodily part into contact with another
tracing
Protecting thermally by addition or subtraction of heat to protect against unwanted temperature
tracking
Searching for by following evidence until found
trading
Acting by engaging in the exchange, purchase, or sale of goods
training
Teaching so to as make fit, qualified, or proficient
transferring
Moving to a different place, region, or situation
transferring controlling
Transferring the control over an item
transferring ownership
Transferring the ownership of an item
transferring transport
Transferring the obligation or right to transport
transformer differential protection
Transformer protection using a differential scheme
transformer protection
Fault protection of a transformer
transforming
Changing or causing to change completely or essentially in composition or structure
transiting
Passing from one state, stage, subject, or place to another
translating
Changing by rendering from one language or representational system to another
transmission of electricity
Transmitting electricity in bulk from one or more generating stations to one or more areas of consumption
transmitting
Sending out a signal through some carrier
transporting
Moving by or as if by one or more items are brought from one location to another
transverse differential protection
Electrical protection applied to parallel connected circuits and in which operation depends on unbalanced distribution of currents between them
trapping
Catching or taking in or as if in a trap or snare
travel service
Serving by making travel arrangements for third parties
traveling
Acting by moving or undergoing transmission from one place to another in a given direction or path or through a given distance
travelling wave protection
Electrical protection that depends on measurement of the magnitude and/or polarity of travelling waves of voltage and current caused by the inception of a power system fault
treating
Acting upon with some agent especially to improve or alter
triggering
Initiating, actuating or setting off by means of a comparatively weak impulse
tripping
Terminating the operation of an equipment or system
tropicalising
Protecting material against tropical heat
troubleshooting
Maintaining by locating trouble and making repairs in machinery and technical equipment
trying
Attempting through exertion of effort, labour, or thought
turning
Moving or causing to move around or as if around an axis or a center
turning away
Refusing admittance or acceptance to
type testing
Electrical rotating machine testing of one or more machines made to a certain design to show that the design meets certain specifications
ultrasonic examination
Non-destructive testing by application of sound of a frequency above human audibility
ultrasonic welding
Solid state welding that produces coalescence of materials by the local application of vibratory energy and by the use of pressure
unblocking overreach protection
Unit protection using telecommunication, generally distance protection, with overreach protection at each section end and in which a blocking signal is transmitted continuously to the other section end until a fault is detected by the overreach protection
undervoltage protection
Electrical protection intended to operate when the power system voltage is reduced to less than a predetermined value
unit protecting using telecommunication
Unit protection in which electrical power system quantities are transmitted from one end of a protected section by telecommunication either in analogue or digital form for comparison at the other end(s)
unit protection
Electrical protection whose operation and section selectivity are dependent on the comparison of electrical quantities at each end of the protected section
unit testing
Testing to verify proper operation of an item including its auxiliary systems with reference to the design
uniting
Acting by putting together to form a single unit
unity power-factor testing
Electrical rotating machine testing in which a synchronous machine is operated under specified operating conditions with its excitation adjusted to give unity power-factor
unloading
Taking off a load
unrestricted earth fault protection
Earth fault protection over an entire system
unwanted operation of protection
Incorrect operation of protection either without any power system fault or other power system abnormality, or for a system fault or other power system abnormality for which that protection should not have operated
upgrading
Improving in quality
upset welding
Resistance welding that produces coalescence over the entire area of faying surfaces by the heat obtained from the resistance to the flow of welding current
user group administration
Administering a user group
using
Acting by making instrumental to an end or a process
utilising
Using for something it was not originally intended for
vacuum distillation
Distilling under sub-atmospheric pressure
vacuum solder shielding
Gas shielding for soldering under vacuum conditions
vacuum weld shielding
Gas shielding for welding under vacuum conditions
validating
Providing evidence of the truth of
vapour-liquid separation
Separating a liquid and a vapour from a vapour-liquid mixture
varying
Making different in some attribute or characteristic
ventilating
Acting by exposing air and esp. a current of fresh air for purifying, curing, or refreshing
venting
Relieving by means of a vent
verifying
Establishing the truth, accuracy, or reality of
vibrating
Moving back and forth
vibration testing
Electrical rotating machine testing taken on a machine to measure the vibration of any part of the machine, under specified conditions
video conferencing
Meeting with persons in remote locations using telecommunication and video
visual examination
Examining by observation
voltage controlling
Controlling network voltages to values within a given range
voltage decrease
Voltage transformation to decrease the level of voltage
voltage increase
Voltage transformation to increase the level of voltage
voltage transformation
Electricity transformation to bring the level of voltage up or down.
volumetric expansion
Expanding the volume occupied by a fluid as a result of which the pressure and temperature will decrease
waiting
Delaying acting
warehousing
Storing in a warehouse
warming
Becoming warm
warning
Alerting beforehand especially of danger or evil
washing
Cleansing by the action of water or another fluid
washing out
Washing free of some extraneous substance
watching
Looking at
water injection
Injecting water into another substance
water quenching
Quenching making use of water
water treating
Treating water
water washing
Washing to remove volatiles from a gas flow using water as adsorbant
waveform testing
Electrical rotating machine testing in which the waveform of any variable quantity associated with a machine, is recorded
wearing
Diminishing or impairing by use or attrition
weather protection
Protecting against the unwanted impact of weather
weaving
Forming by interlacing strands
weeping
Dropping liquid
weighing
Measuring a mass
welding
Joining materials by a process that produces coalescence of materials by heating them to suitable temperatures with or without the application of pressure or by the application of pressure alone and with or without the use of filler material
wetting
Process of getting covered with a liquid
widening
Making wider
winding temperature protection
Transformer protection against high transformer winding temperature
winding-turning
Turning completely or repeatedly about an object
winning-gaining
Gaining possession, advantage, or honour in or as if in a battle or contest, or by fortune
winning-obtaining
Obtaining from a mine or pit
winterising
Protecting against winter weather conditions
working
Acting by functioning or operating according to plan or design
x-ray diffraction analysis
Analysing diffraction of x-rays
x-raying
Testing to detect abnormalities by diffraction or absoption of x-rays
zero power-factor testing
No-load test in which a synchronous machine is over-excited and operated at a power-factor very close to zero

basics.xls

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absorber
A physical object that absorbs
auxiliary system
A system that is part of a larger system and that has a function which is necessary for the larger system, but which is not part of the function of the larger system
bag
A container made of flexible material (paper, cloth, plastic or leather) with an opening at the top.
basin
A container intended to store liquid or solid material partly or totally below grade and that is typically open
basket
A container that has a characteristic shape and that is made of material with an open structure
bracket
A support that is an overhanging member that projects from a structure (as a wall) and is usually designed to support a vertical load or to strengthen an angle.
cap
A physical object that is a hood or covering for the top or end of something.
chamber
A physical object that is an enclosed space
clip
A physical object that clasps or grips objects tightly and so holds them fast.
cloth
A physical object that is a flexible sheet woven from strands
compartment
A physical object that is one of a set of enclosed spaces within a physical object.
component
A physical object that is only used as a part of a larger physical object.
composite material
a physical object that is an arrangement of different types of material within its volume
compound
A physical object that consist of an arrangement of some different type of molecules, bound together by intermolecular forces.
connection
An physical object that is an assembly intended to connect.
connector
A connection that consists of two parts which can be brought together to make the connection.
container
A physical object intended to contain something.
cover
A physical object that is intended to hide or protect something.
davit
A physical object intended to carry the load of equipment that is regularly lifted or launched, like a life boat, or of equipment that regularly is removed for inspection or maintenance, such as covers, hatches, etc.
dent
A feature that is a deformation which changes the contour from the original, manufactured state.
disc
A physical object that is circular and flat, or almost flat
distributor
A physical object intended to distribute or redistribute a fluid or solid
divider
A physical object that separates one space from an other.
door
A physical object that is an opening in a barrier and a removable physical object that can block the opening.
drain
A physical object that allows liquid to leave a container under gravity
drain plug
A fluid regulator intended to plug a drain
enclosure
A physical object that separates enclosed physical objects from those outside
end
A feature which is an extremity of an item
end point
A feature where something is considered to end
face
a feature that is all or part of the surface of a solid
feature
An arranged individual that is a contigous, non-separable part of an individual and that has an incomplete boundary.
fin
A physical object that is a projecting part.
flange
A physical object that is a projecting flat rim, plate,collar, or rib
fluid
A compound which is able to flow.
fluid compound
A compound which is able to flow.
frame
A physical object that is an open structure of beams or bars
gasket
A seal that is one or more closed loops of deformable material used between mating surfaces which have only very limited movement relative to each other.
handle
A physical object that is intended to be gripped by a human hand.
hanger
a support that holds something up
hole
A feature that is a space partially or completely surrounded by solid material.
housing
An enclosure that also provides support.
layer
A physical object that is a thin sheet in an assembly of thin sheets
liner
A physical object that is a membrane placed within a container to form a more durable surface to withstand aggressive matters or abrasive particles.
lining
A physical object that is a coating of material on the inside of a container
manifold
A physical object that contains a chamber with several openings.
name plate
A physical object that bears information about the item to which it is attached
pit
A physical object that is a depression or blind hole.
plant
A physical object that consists of the land, buildings, machinery, apparatus, and fixtures employed in carrying on a trade or an industrial business
plug
A physical object that fits tigthly into a hole and blocks it.
rail
a physical object that has the form of a bar and is intended as a guide for a moving physical object
removable cover
A cover that can be removed
ring
A physical object that is a circle solid material.
rotor
A physical object that is the rotating portion of a machine
seal
A physical object intended to reduce or prevent the passage of fluid through an opening.
section
A physical object which is one of a set of major parts into which a larger physical object is divided.
skirt
A physical object that is an encircling outer part.
spring
a physical object that is intended to transmit load and that is not damaged by large deformation
start point
A feature where something is considered to start
strip
A physical object that is a long and narrow sheet or plate of solid material.
stud
a support that is a short protruding bar
support
A physical object that is capable of keeping some other thing from falling, sinking or failing
system
A functional object which is an assembly of functional objects forming a network to provide a type of service or serving a common purpose.
trap
A physical object for collection and discharge of unwanted condensate from an air-, gas- or steam-flow in pipes, jackets or reservoirs.
vent
a physical object that allows gas or vapour to leave a container under excess pressure
wrench
A physical object that is a tool intended to turn or twist.

class_of_class.xls

[top]

acoustic property class
A property class that contains classes of properties describing acoustic behaviour.
active fire fighting equipment class
A safety equipment class that contains classes of artefacts used for direct firefighting.
activity class
A class that contains classes of activities.
air plane transport class
A transport type class that contains classes of transport activities where a air plane is used as carrier.
aisi standard class
A standard class that contains classes identified by standards/specifications that are approved by American Iron and Steel Institute (AISI).
angle profile class
A structural profile class that contains classes of angle profiles intended for structural applications.
ansi standard class
A standard class that contains classes identified by standards that are approved by American National Standards Institute (ANSI).
api standard class
A standard class that contains classes identified by standards that are approved by the American Petroleum Institute (API).
artefact class
A class that contains classes of artefacts.
asme standard class
A standard class that contains classes conforming to standards that are approved by the American Society of Mechanical Engineers (ASME).
astm grades class
An ASTM standard class that contains classes of ASTM steel grades listed by standard specifications.
astm manufacturing specification class
An ASTM standard class that contains classes of Material conforming to a Manufacturing Specification published by ASTM.
astm standard class
A standard class that contains classes listed in standards that are approved by the American Society for Testing and Materials (ASTM).
astm standard material - iron and steel product class
An ASTM standard class that contains classes of products conforming to specifications/standards for Iron and Steel Products published by the American Society for Testing and Materials (ASTM).
astm standard material - nonferrous metal products class
An ASTM standard class that contains classes of products conforming to specifications/standards for Nonferrous Metal Products published by the American Society for Testing and Materials (ASTM).
astm standard profile class
An ASTM standard class that contains classes of profiles which are described in a specification developed by ASTM.
average property class
A property class that contains classes of properties with "average in their definition.
bar profile class
A structural profile class that contains classes of bar profiles intended for structural use
bs standard class
A standard class that contains classes listed in standards that are approved by British Standards Institution (BSI).
building material class
An artefact class that contains classes of artefacts used in the construction industry.
cenelec standard class
A standard class that contains classes listed in a standard issued by European Committee for Electrotechnical Standardization (CENELEC)
channel profile class
A structural profile class that contains classes of channel profiles intended for structural use.
chemical property class
A property class that contains classes of properties describing chemical behaviour/condition.
cold flow property class
A property class that contains classes of properties which describe aspects of the cold flow behaviour of a fluid.
combustion property class
A property class that contains classes of properties associated with combustion.
connection material class
An artefact class that contains classes of artefacts whose members are intended to be used to connect equipment in a permanent way.
data sheet class
An information carrier class that contains classes of data sheets.
din standard class
A standard class that contains classes referred to in standards approved by the Deutsches Institute fur Normung (DIN).
document class
An information carrier class that contains classes of documents.
electrical equipment class
An equipment class that contains classes of artefacts which is electrical equipment
electrical property class
A property class that contains classes of properties which describe aspects of electricity.
end class
A feature class that contains classes of ends.
energy converter equipment class
An equipment class that contains classes of artefacts intended to convert one form of energy to another.
engineering analysis class
An activity class that contains classes of activities collectively known as engineering analysis activities.
environmental load class
A property class that contains classes of loads from the environment surrounding a thing
equipment class
An artefact class that contains classes of artefacts or physical resources required for a purpose.
equipment component class
An equipment class that contains classes that are parts of classes of equipment.
fail safe equipment class
An equipment class that contains classes of artefact related to fail safe equipment.
feature class
A class that contains classes of features.
fired heat transfer equipment class
An equipment class that contains heat transfer equipment items with a purpose related to combustion
firemans equipment class
A safety equipment class that contains classes of artefacts required for safety protection and rescue mission execution.
fixed equipment class
An equipment class that contains classes of artefact which is fastened to a support or otherwise secured in a specific location.
flanged profile class
A structural profile class that contains classes of flanged profile classes intended for structural applications
fluid equipment class
An equipment class that contains classes of artefacts intended to provide a service in conjunction with operations performed on a fluid, e.g. processing, transportation, storage, regulation etc.
fluid regulator equipment class
A fluid equipment class that contains classes of equipment which are used to regulate a flow of fluid
fluid transport equipment class
A fluid equipment class that contains classes of articles intended to transport substance that behaves as fluid from one fluid equipment to another, without the intention of altering the phase, pressure, temperature and/or flow rate of the transported substance.
functional object class
Classes of functional objects.
gasket contact face class
A process piping equipment class that contains classes of artefacts which is intended to provide the sealing contact with a gasket.
hazardous material class
A substance class that contains classes of substances that either represent a health/environmental hazard or a hazard of fire or explosion.
health, safety and environment equipment class
An equipment class that contains classes of artefacts intended to be used to provide health and safety and to prevent environmental hazards.
heat transfer equipment class
An equipment class that contains equipment items with a purpose related to heat transfer
heating, ventilation and air conditioning (hvac) equipment class
An equipment class that contains classes of artefacts normally used in heating, ventilation and air condition (HVAC) installations.
hvac component class
A heating, ventilation and air conditioning (HVAC) equipment class that contains classes of equipment used as parts of HVAC equipment
iec standard class
A standard class that contains classes which comply with a standard issued by International Electromechanical Institute (IEC).
impedance class
A property class that contains classes of properties with 'impedance' in their name.
information carrier class
A class that contains classes of information carriers
inspection activity class
An activity class that contains classes of inspection activities.
instrumentation and control equipment class
An equipment class that contains classes of artefacts intended to be used for measurement, monitoring and control of industrial processes.
iso standard class
A standard class that contains classes conforming to standards that are approved by the International Organisation for Standardisation (ISO).
jis standard class
A standard class that contains classes conforming to a Japanese Industrial Standard (JIS) that are approved by the Japanese Industrial Standards Committee (JISC).
library class
A class that contains classes included in an electronic library
line pipe class
A pipe class that contains classes of pipes intended to be used for making pipelines.
material handling equipment class
An equipment class that contains classes of artefacts intended to be used for material handling, which includes mechanical handling like transport and positioning related to installation, maintenance and replacement of other equipment.
mechanical connector class
A connection material class that contains classes of artefacts used to connect one item to another by the use of mechanical force
mechanical energy transfer equipment class
An equipment class that contains classes of artefacts used for transferring mechanical energy.
mechanical equipment class
An equipment class that contains classes that normally are the responsibility of a department for mechanical engineering
metal class
A substance class that contains classes of metals
nace standard material class
A standard class that contains classes of materials conforming to standards that are approved by the National Association of Corrosion Engineers (NACE).
ns standard class
A standard class that contains classes appearing in standards approved by Norges Standardiseringsforbund (NSF).
office equipment class
An equipment class that contains classes of equipment that can be found in a office.
passive fire protection equipment class
A safety equipment class that contains classes of artefacts that is used for indirect fire protection.
personnel protection wear class
A safety equipment class that contains classes of artefacts for body protection.
personnel rescue equipment class
A safety equipment class that contains classes of artefacts intended for emergency situations rescue.
pipe class
A structural class that contains classes of pipes and circular hollow profiles.
pipe fitting class
A piping component class that contains classes of piping components that permit a change in direction of pipe run, a change in size or a branch to be made from the main run of a pipe.
pipeline activity class
An activity class that contains classes of activities related to pipelines.
pipeline class
A transport equipment class that contains classes related to pipelines and pipeline related activities.
pipeline design standards and codes class
A pipeline class that contains classes of design standards and codes which are applicable for pipelines and pipeline design activities.
pipeline feature class
A feature class which is related to a pipeline
piping component class
A process piping equipment class that contains classes of equipment used in or in connection with a piping system.
piping end class
An end class that contains classes of ends that are used in piping systems
portable equipment class
An equipment class that contains classes of artefact which is moved while in operation or which can easily be moved from one place to another while connected to the supply.
process equipment class
An equipment class that contains equipment items with a purpose related to the processing or control of fluid streams.
process piping equipment class
An equipment class that contains classes of artefacts intended to be used in the construction of process piping installations.
property class
A class that contains classes of properties.
proprietary class
A class that contains classes controlled by a non-standard (private) organisation.
protection equipment class
A class that contains classes that are classified as protection equipment
pump component class
A rotating mechanical equipment class that contains classes of machine components that forms parts of a pump.
railroad transport class
A transport type class that contains classes of transport activities where a train is used as carrier.
rectangular hollow section class
A structural profile class that contains classes of rectangular hollow sections intended for structural use
resistance class
A property class that contains classes of properties with 'resistance' in their name.
rotating equipment class
An equipment class that contains classes that are classified as rotating equipment
rotating mechanical equipment class
An equipment class that contains classes of artefacts which is mechanical equipment containing rotating parts taking part in the conversion of energy.
sae standard class
A standard class that contains classes defined by the Society of Automotive Engineers (SAE).
safety equipment class
A health, safety and environment equipment class that contains classes of artefacts related to the safety for personnel, environment and material assets.
safety valve class
A valve class that contains classes of valves related to safety.
ship transport class
A transport type class that contains classes of transport activities where a ship is used as carrier.
solid handling equipment class
An equipment class that contains classes of equipment used for solid handling
square hollow section class
A structural profile class that contains classes of square hollow sections intended for structural use
standard class
A class that contains classes which are defined by a standard issued by a standardisation organization.
standard hexagonal nipple class
A standard pipe nipple class that contains classes of hexagonal nipples classified by standard specifications.
standard pipe class
A pipe class that contains classes of pipes group by standards.
standard pipe component class
A piping component class that contains classes of piping components classified by standard specifications.
standard pipe connector class
A standard pipe component class that consists of classes of pipe connectors classified by standard specifications
standard pipe fitting class
A pipe fitting class that contains classes of pipe fittings classified by standard specifications.
standard pipe nipple class
A standard pipe connector class that consists of classes of pipe nipples classified by standard specifications.
stationary equipment class
An equipment class that contains classes of artefact which is not provided with a carrying handle and having such a mass that it cannot easily be moved.
structural class
A class that contains classes related to structural installations.
structural profile class
A structural class that contains classes of all profiles intended in the construction of structural installations.
substance class
A class that contains classes of substances.
support and test equipment class
An equipment class that contains classes of artefacts which are required for support, i.e. for operation, maintenance, repair and test activities for a type of product.
support class
An artefact class that contains classes of artefacts whose members are intended to support another artefact.
t profile class
A structural profile class that contains classes of T-profiles intended for structural use
thermodynamic property class
A property class that contains classes of properties associated with thermodynamics.
thread class
A feature class that contains classes of threads.
tool class
A functional object class that contains classes of functional objects that can be classified as tools.
trailer truck transport class
A transport type class that contains classes of transport activities where a trailer truck is used as carrier.
transport equipment class
An equipment class that contains classes related to transport equipment.
transport type class
An activity class that contains classes of transport activities.
tubular class
A structural profile class that contains classes of circular hollow profiles intended for structural applications.
valve class
A valve equipment class that contains classes of valves.
valve component class
A valve equipment class that contains classes of valve components or parts used in pumps and pump assemblies. Only to be used during the classification of valves.
valve equipment class
An artefact class that contains classes of artefacts intended to be used to control, i.e. permit, obstruct or regulate a fluid stream.
valve housing class
A valve component class that contains classes of static housings (Body and bonnet) surrounding the closure member.
valve trim class
A valve component class that contains classes of internal components associated with isolating or regulating the flow. Includes seating surfaces, closure members (Gate, disk, ball, plug, etc.) stem, bearings, guides, and associated parts
workshop equipment class
An equipment class that contains classes of tools and machines normally found in a workshop.
z profile class
A structural profile class that contains classes of Z-profiles intended for structural use

connection_material.xls

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allen key
A wrench that is furnished with a hexagonal outer shaped end intended to fit into an Allen screw head.
alloy steel threaded fastener
A threaded fastener that is made from alloy steel.
austenitic stainless steel threaded fastener
A stainless steel threaded fastener that is made from austenitic stainless steel.
bolt
A physical object that is a rod or pin shaped object capable of fastening objects together.
british standard pipe thread
A thread with a profile according the BSP standard.
button head rivet
A rivet that is furnished with button head.
buttress thread
A thread with a buttress shape.
cap nut
A nut whose outer end is closed, so protecting the end of the screw, and giving a neat appearance.
carriage bolt
A round head threaded fastener that is furnished with a square, ribbed or fluted boss underneath the head.
castle nut
A lock nut that is furnished with a 6-sided nut on top, in which six radial slots are cut. Two of these slots line up with a hole drilled in the bolt or screw and through which a split pin is being inserted to prevent turning.
cheese fastener head
A threaded fastener head that has a cylindrical shaped head that is flat on top.
cheese head threaded fastener
A threaded fastener with head that is furnished with a cheese head.
clutch socket fastener head
A cylindric socket fastener head that is furnished with a clutch type socket driving recess.
clutch socket head threaded fastener
A cylinder head threaded fastener that is furnished with a clutch socket head type recess.
clutch-type socket driving recess
A socket driving recess that has a conical shape to receive a clutch-type driver.
cone head rivet
A rivet that is furnished with cone head.
conical driving recess
A driving recess that is furnished with sloping conical walls and a pointed bottom.
conical threaded fastener
A threaded fastener with a conical outer shape that does not need to be used in a pre-threaded device.
cotter pin
A split-pin that is intended to be inserted in a hole in a cotter or other part, to prevent loosening under vibration.
cup pointed end
A screw end that is furnished with a pointed end with a cup-shape to reduce its contact area.
cylinder head threaded fastener
A threaded fastener that is furnished with a cylindrically shaped head with a socket so it can be turned by means of a bar formed to fit into it.
cylindric socket fastener head
A threaded fastener head with a cylindrical external shape and an internal socket.
cylindrical threaded fastener
A threaded fastener with a uniform cylindrical outer shape that requires a pre-threaded hole.
cylindrical threaded rod
A cylindrical threaded fastener of uniform cylindrical outer shape and undetermined length, having a thread all along its length.
double end stud bolt
A partially threaded stud bolt with an unthreaded centre section and thread on both ends.
dovetail thread
A thread with a dovetail shape.
dowel pin
A pin that is designed to be used to align mating faces of separate parts.
drill pipe thread
A thread that is a coarse type of thread that is used for drill pipes.
driving end
An end that has been given a special shape to enable application and/or reaction of fastening forces by being connected to a correspondingly shaped head.
driving recess
An inanimate materialized physical feature intended to enable rotation of an object, normally a screw or bolt, by inserting a similarly shaped tool in the recess.
dryseal pipe thread
A thread conforming to ANSI/ASME B1.20.3 "Dryseal Pipe Threads (Inch)"
expansion bolt
A bolt that is designed for securing objects through its ability to expand against the walls of a hole as it is tightened.
external thread
A thread that is located on an outside surface.
externally threaded end
A threaded end with an external thread.
eye bolt
A cylindrical threaded fastener of the non-tapping type that is provided with an eye ring intended for lifting purposes.
eye fastener head
A threaded fastener head that has the shape of a ring.
eye nut
A nut that is carrying an eye on the top intended for lifting purposes.
fastener head
A feature with an unique shape to enable application and/or reaction of fastening forces by being connected to a correspondingly shaped object.
fillister fastener head
A threaded fastener head that has a cylindrical shape with a domed top.
fillister head threaded fastener
A threaded fastener with head that is furnished with a fillister head.
flanged hexagonal nut
A hexagonal nut that is furnished with a flange.
flat driving end
A driving end that is furnished with a flat shape and blunt edge, intended to be inserted into a similarly shaped slot of a threaded fastener head.
flat fastener head
A threaded fastener with head that is furnished with a flat top and a conical shoulder.
flat head threaded fastener
A threaded fastener with head that is furnished with a flat head.
flat screwdriver
A screwdriver that is furnished with a flat driving end.
fluted pan head threaded fastener
A pan head threaded fastener furnished with a fluted socket driving recess.
fluted round head threaded fastener
A round head threaded fastener furnished with a torx recess.
fluted socket driving recess
A socket driving recess that is furnished with a conical shaped recess to receive a fluted "Torx" driver.
fluted socket fastener head
A cylinder socket fastener head furnished with a fluted driving recess.
fluted socket flat fastener head
A flat fastener head furnished with a fluted "Torx" socket.
fluted socket flat head threaded fastener
A flat head threaded fastener furnished with a fluted "Torx" socket.
fluted socket head threaded fastener
A cylinder head threaded fastener furnished with a socket head with a fluted recess.
frearson driving end
A driving end with a cross shape that is intended to be inserted into a similarly shaped recess (Frearson-type) on a threaded fastener head.
frearson fillister fastener head
A fillister fastener head that is designed with a Frearson-type (star) driving recess.
frearson fillister head threaded fastener
A fillister head threaded fastener that is furnished with a Frearson-type driving recess.
frearson flat fastener head
A flat fastener head that is furnished with a Frearson-type driving recess.
frearson flat head threaded fastener
A flat head threaded fastener that is furnished with a Frearson-type cross-recess.
frearson oval fastener head
An oval fastener head that is furnished with a Frearson-type (star) driving recess.
frearson oval head threaded fastener
An oval head threaded fastener that is furnished with a Frearson-type cross-recess.
frearson round fastener head
A round fastener head that is furnished with a Frearson-type driving recess.
frearson round head threaded fastener
A round head threaded fastener that is furnished with a Frearson-type cross-recess.
frearson screwdriver
A screwdriver that is furnished with a Frearson driving end.
frearson-type recess
A conical driving recess that is shaped to receive a Frearson driving end.
fully threaded fastener
A threaded fastener that is furnished with threads along its entire length.
fully threaded stud bolt
A stud bolt that is threaded along its entire length.
gimlet pointed end
A screw end that is furnished with a pointed end with a gimlet point.
grub screw
A cylindrical threaded fastener that is furnished with a driving recess in one end.
half dog pointed end
A screw end that is furnished with a pointed end with a cylindrical shape of less diameter than the nominal diameter.
hex bolt ansi b18.2.1
A cylindrical threaded fastener with hexagonal head conforming to the ANSI B18.2.1 Specification, Table 3 with Notes.
hex socket head threaded fastener
A cylinder head threaded fastener that is furnished with a hexagonal shaped recess.
hexagonal fastener head
A threaded fastener head that is furnished with a hexagonal outer shape.
hexagonal head flange bolt
A hexagonal head threaded fastener that is a bolt or screw furnished with a hexagonal head and flange (collar).
hexagonal head lock nut
A lock nut that has a hexagonal shape.
hexagonal head threaded fastener
A hexagonal head threaded fastener that is furnished with a hexagonally shaped head.
hexagonal nut
A nut that has a hexagonal shape.
hexagonal socket driving recess
A socket driving recess that is shaped to receive a tool with a hexagonal driving end.
hexagonal socket fastener head
A cylindric socket fastener head that is furnished with a hexagonal shaped recess.
hexagonal socket flat head threaded fastener
A flat head threaded fastener that is furnished with a hexagonal socket flat fastener head.
hexagonal weld nut
A weld nut with a hexagonal outer shape.
hook thread
A thread of the buttress type, but with a face angle of less than 90 degrees in relation to the axis.
internal thread
A thread that is located on the inside surface.
internally threaded end
A threaded end that is furnished with an internal thread.
left hand thread
A thread that is shaped such that it moves away, when turned clockwise, relative to the mating threaded component.
line-pipe thread
A thread that has the shape of a triangle with 60 degree angles.
lock nut
A nut that is furnished with a locking device to prevent it from accidental loosening.
lock washer
A washer that is designed to prevent accidental loosening of a nut, bolt or screw.
metal threaded fastener
A threaded fastener that is made from a metal alloy.
mushroom fastener head
A threaded fastener head with a button or mushroom like shape.
mushroom fin neck fastener head
A mushroom fastener head that is furnished with a number of fins on the head neck to prevent the screw from loosening when tightened.
mushroom head fin neck bolt
A mushroom head threaded fastener that is a partly threaded non-tapping threaded fastener furnished with a finned neck head.
mushroom head rib neck bolt
A mushroom head threaded fastener that is a partly threaded non-tapping threaded fastener furnished with a ribbed neck head.
mushroom head square neck bolt
A mushroom head threaded fastener that is a partly threaded non-tapping threaded fastener furnished with a square neck head.
mushroom head threaded fastener
A threaded fastener with head that is furnished with a button or mushroom head with a neck on the underside to prevent the screw from loosening when tightened.
mushroom ribbed neck fastener head
A mushroom fastener head that is furnished with a number of ribs or splines on the head neck to prevent the screw from loosening when tightened.
nail
A physical object that is a bar furnished with a nail head in one end and is pointed in the other. Intended to be hammered into articles.
nail head
A fastener head that is the enlarged end of a nail.
np thread
A thread that has a basic form conforming to ANSI/ASME B1.20.1 "Pipe Threads, General Purpose (Inch)", Figure 1.
npsc thread
A NP pipe thread conforming to ANSI/ASME B1.20.1 "Pipe Threads, General Purpose (Inch)", Section 4.
npsh thread
A NP pipe thread conforming to ANSI/ASME B1.20.1 "Pipe Threads, General Purpose (Inch)", Section 6.4.
npsl thread
A NP pipe thread conforming to ANSI/ASME B1.20.1 "Pipe Threads, General Purpose (Inch)", Section 6.1 and 6.2.
npsm thread
A NP pipe thread conforming to ANSI/ASME B1.20.1 "Pipe Threads, General Purpose (Inch)", Section 6.2.
npt thread
A NP pipe thread conforming to ANSI/ASME B1.20.1 "Pipe Threads, General Purpose (Inch)", Section 3.
nptr thread
A NP pipe thread conforming to ANSI/ASME B1.20.1 "Pipe Threads, General Purpose (Inch)", Section 5.
nut
A physical object that is a collar with an internal thread intended to fit onto an external thread, and externally shaped for gripping or turning.
one-way head threaded fastener
A threaded fastener with head that is furnished with a slotted head and the slot is shaped in a way that makes it possible to turn the fastener in one direction only, usually clockwise.
oval fastener head
A threaded fastener head that has a domed top and conical shoulder shape.
oval head threaded fastener
A threaded fastener that is furnished with an oval head.
pan fastener head
A threaded fastener head that has a rounded shape.
pan head threaded fastener
A threaded fastener that is furnished with a pan head.
partially threaded fastener
A threaded fastener that is furnished with threads along some part of its length.
partially threaded stud bolt
A stud bolt that is threaded in both ends along only a part of its length.
phillips driving end
A driving end with an extended cross shape intended to be inserted into a similarly shaped recess (Phillips-type) of a threaded fastener head.
phillips fillister fastener head
A fillister fastener head that is furnished with a Phillips-type driving recess.
phillips fillister head threaded fastener
A fillister head threaded fastener that is furnished with a Phillips driving recess.
phillips flat fastener head
A flat fastener head that is furnished with a Phillips-type driving recess.
phillips flat head threaded fastener
A flat head threaded fastener that is furnished with a Phillips cross-recess.
phillips oval fastener head
An oval fastener head that is furnished with a Phillips-type driving recess.
phillips oval head threaded fastener
An oval head threaded fastener that is furnished with a Phillips cross-recess.
phillips pan fastener head
A pan fastener head that is furnished with a Phillips-type driving recess.
phillips pan head threaded fastener
A pan head threaded fastener that is furnished with a Phillips driving recess.
phillips round fastener head
A round fastener head that is furnished with a Phillips-type driving recess.
phillips round head threaded fastener
A round head threaded fastener that is furnished with a Philips cross-recess.
phillips screwdriver
A screwdriver that is furnished with a Phillips driving end.
phillips-type recess
A conical driving recess that is shaped to receive a Phillips driving end.
pin
A physical object that is a small shaft, rod or pivot intended to be used to connect, assemble, lock, align, etc.
plain washer
A washer that has a plain surface and does not have a special shape intended to prevent accidental loosening of a bolt, nut or screw.
pozidriv driving end
A driving end that is furnished with a special cross shaped end intended to be inserted into a similarly shaped Pozidriv-type recess on a threaded fastener head.
pozidriv fillister fastener head
A fillister fastener head that is furnished with a Pozidriv-type recess.
pozidriv fillister head threaded fastener
A fillister head threaded fastener that is furnished with a Pozidriv fillister fastener head.
pozidriv flat fastener head
A flat fastener head that is furnished with a Pozidriv-type recess.
pozidriv flat head threaded fastener
A flat head threaded fastener that is furnished with a Pozidriv flat fastener head.
pozidriv oval fastener head
An oval fastener head that is furnished with a Pozidriv-type driving recess.
pozidriv oval head threaded fastener
An oval head threaded fastener with a Pozidriv cross-recess.
pozidriv pan fastener head
A pan fastener head that is furnished with a Pozidriv-type driving recess.
pozidriv pan head threaded fastener
A pan head threaded fastener that is furnished with a Pozidriv pan fastener head.
pozidriv round fastener head
A round fastener head that is furnished with a Pozidriv-type driving recess.
pozidriv round head threaded fastener
A round head threaded fastener that is furnished with a Pozidriv round fastener head.
pozidriv screwdriver
A screwdriver that is furnished with a Pozidriv driving end.
pozidriv-type recess
A conical driving recess that is shaped to receive a Pozidriv driving end.
right hand thread
A thread that is shaped such that it moves away, when turned counter-clockwise, relative to the mating threaded component.
ring fastener head
A threaded fastener head that is shaped like a ring.
ring head threaded fastener
A threaded fastener that is furnished with a ring shaped fastener head.
ring nut
A nut that is furnished with a ring-shaped lug to enable it to be turned by thumb and fingers.
rivet
A physical object that is a headed shank or rod for making a permanent joint between two or more pieces. It is inserted in a hole which is made through the pieces, and "closed" by forming a head on the projecting part of the shaft by hammering or other means.
round fastener head
A threaded fastener head that is shaped like a dome or cap.
round head threaded fastener
A threaded fastener that is furnished with a round head.
round nut
A nut that has a cylindrical shape.
round thread
A thread that has a symmetrical round shape.
screw end
An end that is the extremity of a screw.
screwdriver
A physical object that is a handle with a pointed end intended to be used for turning screws.
self-tapping threaded fastener
A threaded fastener that is furnished with threads that cuts or forms its own internal threads when driven in.
set screw
A cylindrical threaded fastener that is a screw used to prevent relative motion between parts by exerting pressure with its end.
slotted driving recess
A driving recess that is shaped to receive a flat driving end.
slotted fastener head
A threaded fastener head that is furnished with a slotted driving recess.
slotted fillister fastener head
A fillister fastener head that is furnished with a slotted driving recess.
slotted fillister head threaded fastener
A fillister head threaded fastener that is furnished with a slotted fillister fastener head.
slotted flat fastener head
A flat fastener head that is furnished with a slotted driving recess.
slotted flat head threaded fastener
A flat head threaded fastener that is furnished with a slotted flat fastener head.
slotted oval fastener head
An oval fastener head that is furnished with a slotted driving recess.
slotted oval head threaded fastener
An oval head threaded fastener that is furnished with a slotted oval fastener head.
slotted pan fastener head
A pan fastener head that is furnished with a slotted driving recess.
slotted pan head threaded fastener
A pan head threaded fastener that is furnished with a slotted pan fastener head.
slotted round fastener head
A round fastener head that is furnished with a slotted driving recess.
slotted round head threaded fastener
A round head threaded fastener that is furnished with a slotted round fastener head.
socket driving recess
A driving recess that is furnished with vertical walls and a flat bottom.
split pin
A pin formed of wire with hemispherical section, bent round till the flat faces meet.
spring washer
A lock washer that is shaped like a piece of a spring.
spring washer az
A spring washer of AZ type.
spring washer azr
A spring washer of AZR type.
square fastener head
A threaded fastener head that has a square shape.
square head threaded fastener
A threaded fastener that is furnished with a square head.
square nut
A nut that has a square outer shape.
square washer
A washer that has a square outer shape and a round hole in the center.
square weld nut
A weld nut that has a square outer shape.
stainless steel threaded fastener
A steel threaded fastener that is made from stainless steel.
star washer
A lock washer that has a serrated surface and is shaped in order to grip the nut and prevent it from loosening when tightened. Washer is directional.
steel threaded fastener
A metal threaded fastener that is made from steel.
stud bolt
A cylindrical threaded fastener (with external thread) without a head or driving recess that is generally threaded from both ends and is plain in the middle.
t-nut
A nut that is furnished with a T-head in form of a rectangular cross-piece on top; intended for sliding into slots on e.g. a machine tool table.
taper pin
A pin that is very slightly tapered to be used as a cotter, fastener or wedge.
thread
A feature that is a projecting helical rib of approximately triangular (or v), square, trapezoidal or rounded section, formed on a cylindrical or conical core.
thread cutting threaded fastener
A self-tapping threaded fastener that is furnished with cutting edges and chip cavities which form a mating thread by removing substance adjacent to the pilot hole.
thread forming threaded fastener
A self-tapping threaded fastener that plastically displaces the substance adjacent to the pilot hole.
threaded end
An end that possesses threads.
threaded fastener
A physical object that is an artefact furnished with thread or threads, where the whole artefact is intended for making a threaded connection.
threaded fastener head
A fastener head that forms part of a threaded fastener and takes up the reaction forces from a threaded connection.
threaded fastener with head
A threaded fastener that is furnished with head.
threaded fastener without head
A threaded fastener without head.
threaded hole
A hole where the wall surface, i.e. the boundary between the solid and the non-solid and where the basic shape is circular or conical, is furnished with a thread.
unified inch external left hand screw thread
A left hand external thread that has a basic shape conforming to the definition of Unified Inch Screw Thread provided by ASME B1.1-1989 (UN and UNR Thread Form).
unified inch external right hand screw thread
A right hand external thread that has a basic shape conforming to the definition of Unified Inch Screw Thread provided by ASME B1.1-1989 (UN and UNR Thread Form).
unified inch external screw thread
An external thread that has a basic shape conforming to the definition of Unified Inch Screw Thread provided by ASME B1.1-1989 (UN and UNR Thread Form).
unified inch internal left hand screw thread
A left hand internal thread that has a basic shape conforming to the definition of Unified Inch Screw Thread provided by ASME B1.1-1989 (UN and UNR Thread Form).
unified inch internal right hand screw thread
A right hand internal thread that has a basic shape conforming to the definition of Unified Inch Screw Thread provided by ASME B1.1-1989 (UN and UNR Thread Form).
unified inch internal screw thread
An internal thread that has a basic shape conforming to the definition of Unified Inch Screw Thread provided by ASME B1.1-1989 (UN and UNR Thread Form).
unified inch screw thread
A thread conforming to Unified Inch Screw Thread according to ASME B1.1-1989 (UN and UNR Thread Form).
washer
A physical object that is an annular thin flat plate, intended to seat or lock a bolt, screw or nut and or to prevent leakage.
wedge thread
A thread that has a wedge shape.
weld nut
A nut that is manufactured from low carbon steel intended to be welded onto a plate or machine element to give hold for a bolt or screw.
weld nut din 929
A hexagonal weld nut that is manufactured according to the DIN 929 specifications.
wing fastener head
A threaded fastener head that is furnished with lugs shaped like wings.
wing head threaded fastener
A threaded fastener with head where the head is furnished with lugs shaped like wings.
wing nut
A nut that is furnished with radial lugs or wing like projections to enable it to be turned by thumb and forefinger.

control_function.xls

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control function
activity that converts one or more input signals into one or more output signals in order to regulate a process.
control function ABS
a control function to determine an absolute value, defined by V:=abs(U) as in y = abs(x)
control function ACOS
a control function to determine an arccosine defined by V:= arccos(U) as in y = arccos(x) as defined in VDE/VDI 3696.
control function ADD
a control function to determine a sum of a number of values, defined by V:=U1+U2+U3+... as in y = sum (x(i), i=1,n) as defined in VDE/VDI 3696.
control function AM
a control function to generate and store an alarm
control function AND
a control function to determine a logical addition, defined by Q:=I1&I2&..&In as in y = Boolean (n(i), i=1,n) as defined in VDE/VDI 3696.
control function ASIN
a control function to determine an arcsine, defined by V:=arcsin(U) as in y = arcsin(x) as defined in VDE/VDI 3696.
control function ATAN
a control function to determine an arctangent defined by V:=arctan(U) as in y = arctan(x) as defined in VDE/VDI 3696.
control function AVER
a control function to determine a progressive average over time as defined by y = (x(i), 1=1,n) / t as defined in VDE/VDI 3696.
control function BIT-N
a control function to select 1 out of N, defined by F(y,i) = y(i) as defined in VDE/VDI 3696.
control function C
a control function to control according to a universal proportional and integrating and differentiating action (PID-T1) as defined in VDE/VDI 3696.
control function COS
a control function to determine a cosine, defined by V:=cos(U) as in y = cos(x) as defined in VDE/VDI 3696.
control function CS
a control function to control according to a standard proportional and integrating and differentiating action (PID-T1) as defined in VDE/VDI 3696.
control function CT
a control function to count upward and downward as defined in VDE/VDI 3696.
control function DEADT
a control function to wait during a lag time, defined by V(t):=U(t-DEADT) as defined in VDE/VDI 3696.
control function DEMUX-B
a control function to demultiplex for Boolean signals as defined in VDE/VDI 3696.
control function DEMUX-N
a control function to demultiplex for continuous signals as defined in VDE/VDI 3696.
control function DIF
a control function to determine a differential quotient (dx/dt) defined by T1*V(t)+V(t)=TD*U(t) as defined in VDE/VDI 3696.
control function DIV
a control function to divide defined by V:=U1/U2 as in y=x1/x2 as defined in VDE/VDI 3696.
control function EQ
a control function to determine whether two or more values or conditions are equal within an adjustable tolerance with the result true or false As defined in VDE/VDI 3696.
control function EXP
a control function to exponentiate with the value e as a basis and an input parameter as the power, defined by V:=e**U as in y=e**x as defined in VDE/VDI 3696.
control function EXPT
With the first input parameter as a basis and the second as the power, defined by V:=U1**U2 as in y=x1**x2 as defined in VDE/VDI 3696.
control function FIO
a control function to determine a 1st order, lead lag defined by T1*V(t)+V(t)=KP*[U(t)+TD*U(t)] as defined in VDE/VDI 3696.
control function FTRIG
a control function to detect a falling edge as defined in VDE/VDI 3696.
control function GE
a control function to determine whether one input is greater than or equal to another one as defined in VDE/VDI 3696.
control function GT
a control function to determine whether an input is greater than another one as defined in VDE/VDI 3696.
control function H-B
a control function to import a manual Boolean input with a switch over from manual to external as defined in VDE/VDI 3696.
control function H-N
a control function to import a manual numeric input with a switch over from manual to external as defined in VDE/VDI 3696.
control function IN-A
a control function to convert an analogue input as defined in VDE/VDI 3696.
control function IN-B
a control function to convert a binary input as defined in VDE/VDI 3696.
control function IN-CB
a control function to import a Boolean input via a communication link as defined in VDE/VDI 3696.
control function IN-CN
a control function to import a numeric input via a communication link as defined in VDE/VDI 3696.
control function IN-I
a control function to import an impulse input via a communication link as defined in VDE/VDI 3696.
control function IN-W
a control function to import a digital word input via a communication link as defined in VDE/VDI 3696.
control function INTEGR
a control function to determine an integral, defined by y = c +k ….. as defined in VDE/VDI 3696.
control function LE
a control function to determine whether an input is less than or equal to another input as defined in VDE/VDI 3696.
control function LIMIT
a control function to determine a limitation as defined in VDE/VDI 3696.
control function LN
a control function to determine a natural logarithm defined by V:=LN(U) as in y=ln(x) as defined in VDE/VDI 3696.
control function LOG
a control function to determine a base 10 logarithm defined by V:=LOG10(U) as in y =log10(x) as defined in VDE/VDI 3696.
control function LT
a control function to determine whether an input is less than another as defined in VDE/VDI 3696.
control function MAX
a control function to select a maximum as defined in VDE/VDI 3696.
control function MIN
a control function to select a minimum as defined in VDE/VDI 3696.
control function MOD
a control function to determine a modulus of an input, defined by V := |U| as in y = |x|as defined in VDE/VDI 3696.
control function MUL
a control function to determine a mathematic product, defined by V:=U1*U2*...*Un as in y=x1*x2*...*xn as defined in VDE/VDI 3696.
control function MUX-B
a control function to multiplex Boolean signals as defined in VDE/VDI 3696.
control function MUX-N
a control function to multiplex numeric signals as defined in VDE/VDI 3696.
control function NE
a control function to determine whether an input is not equal to another one as defined in VDE/VDI 3696.
control function NONLIN
a control function to evaluate a nonlinear static function defined by V:=f(U) as in y=f(x) as defined in VDE/VDI 3696.
control function NOT
a control function to give the Boolean opposite of a Boolean input, defined by Q:=NOT I as defined in VDE/VDI 3696.
control function OR
a control function to determine a Boolean OR defined by Q:=I1 OR I2 OR... OR In as defined in VDE/VDI 3696.
control function OUT-A
a control function to convert an analogue output as defined in VDE/VDI 3696.
control function OUT-B
a control function to convert a binary output as defined in VDE/VDI 3696.
control function OUT-CB
a control function to export a Boolean value via a communication link as defined in VDE/VDI 3696.
control function OUT-CN
a control function to export a numeric value via a communication link as defined in VDE/VDI 3696.
control function OUT-W
a control function to export a digital word as defined in VDE/VDI 3696.
control function PWM
a control function to modulate a pulse width as defined in VDE/VDI 3696.
control function REG
a control function to register a value or text or other information representation
control function RSFF
a control function that is a bistable element function with reset dominance as defined in VDE/VDI 3696.
control function RTRIG
a control function to detect a rising edge as defined in VDE/VDI 3696.
control function SAM
a control function to store a limit switch alarm or message as defined in VDE/VDI 3696.
control function SCAL
a control function to scale by a linear function defined by V:=SCAL*U+OFFS as in y=SCAL*x+OFFS as defined in VDE/VDI 3696.
control function SEL-B
a control function to select the binary for a BOOLEAN value as defined in VDE/VDI 3696.
control function SEL-N
a control function to select the binary a for a numeric value as defined in VDE/VDI 3696.
control function SEO
a control function to determine the result a second order equationas defined in VDE/VDI 3696.
control function SIN
a control function to determine a sine, defined by V:=SIN(U) as in y=sin(x) as defined in VDE/VDI 3696.
control function SQRT
a control function to determine a square root defined by V:=SQRT(U) as in y=SQRT(x) as defined in VDE/VDI 3696.
control function SRFF
a control function that is a bistable element function with set dominance as defined in VDE/VDI 3696.
control function SUB
a control function to determine the difference between to values, defined by V:=U1-U2 as in y=x1-x2 as defined in VDE/VDI 3696.
control function TAN
a control function to determine a tangent, defined by V:=TAN(U) as in y=TAN(x) as defined in VDE/VDI 3696.
control function TOF1
a control function to determine the off delay as defined in VDE/VDI 3696.
control function TON1
a control function to determine the on delay as defined in VDE/VDI 3696.
control function TP1
a control function that is a monostable element function as defined in VDE/VDI 3696.
control function XOR
a control function to determine a Boolean exclusive OR defined by Q:=I1 XOR I2 XOR... XOR In as defined in VDE/VDI 3696.
control function Y-FCOR
a control function to correct a flow rate defined by a user defined algorithm as defined in VDE/VDI 3696.
control function Y-HF
a control function to determine a heat flow defined by a user defined algorithm as defined in VDE/VDI 3696.
control function Y-L
a control function to determine a liquid level as defined by a user defined algorithm as defined in VDE/VDI 3696.
control function Y-SSP
a control function to evaluate a saturated steam pressure function defined by a user defined algorithm as defined in VDE/VDI 3696.
control function Y-SST
a control function to evaluate a saturated steam temperature function defined by a user defined algorithm as defined in VDE/VDI 3696.

electrical.xls

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1 core cable
An electric cable consisting of one core only
1 pair cable
A pair cable consisting of one pair only
1 quad cable
A quad cable consisting of one quad only
1 triple cable
A triple cable consisting of one triple only
10 core cable
A multicore cable consisting of 10 cable conductors
10 pair cable
A pair cable consisting of 10 pairs
10 triple cable
A triple cable consisting of 10 triples
12 core cable
A multicore cable consisting of 12 cable conductors
12 pair cable
A pair cable consisting of 12 pairs
12 triple cable
A triple cable consisting of 12 triples
14 core cable
A multicore cable consisting of 14 cable conductors
14 pair cable
A pair cable consisting of 14 pairs
14 triple cable
A triple cable consisting of 14 triples
16 core cable
A multicore cable consisting of 16 cable conductors
16 pair cable
A pair cable consisting of 16 pairs
16 triple cable
A triple cable consisting of 16 triples
19 core cable
A multicore cable consisting of 19 cable conductors
19 pair cable
A pair cable consisting of 19 pairs
19 triple cable
A triple cable consisting of 19 triples
2 core cable
A multicore cable consisting of 2 cable conductors
2 pair cable
A pair cable consisting of 2 pairs
2 quad cable
A quad cable consisting of 2 quads
2 triple cable
A triple cable consisting of 2 triples
20 pair cable
A pair cable consisting of 20 pairs
20 triple cable
A triple cable consisting of 20 triples
24 core cable
A multicore cable consisting of 24 cable conductors
24 pair cable
A pair cable consisting of 24 pairs
24 triple cable
A triple cable consisting of 24 triples
27 core cable
A multicore consisting of 27 cable conductors
27 pair cable
A pair cable consisting of 27 pairs
3 pair cable
A pair cable consisting of 3 pairs
3 quad cable
A quad cable consisting of 3 quads
3 triple cable
A triple cable consisting of 3 triples
30 pair cable
A pair cable consisting of 30 pairs
32 pair cable
A pair cable consisting of 32 pairs
32 triple cable
A triple cable consisting of 32 triples
37 core cable
A multicore cable consisting of 37 cable conductors
37 pair cable
A pair cable consisting of 37 pairs
4 core cable
A multicore cable consisting of 4 cable conductors
4 pair cable
A pair cable consisting of 4 pairs
4 triple cable
A triple cable consisting of 4 triples
5 core cable
A multicore cable consisting of 5 cable conductors
5 pair cable
A pair cable consisting of 5 pairs
5 quad cable
A quad cable consisting of 5 quads.
50 pair cable
A pair cable consisting of 50 pairs
6 core cable
A multicore cable consisting of 6 cable conductors
7 core cable
A multicore cable consisting of 7 cable conductors
7 pair cable
A pair cable consisting of 7 pairs
7 quad cable
A quad cable consisting of 7 quads
7 triple cable
A triple cable consisting of 7 triples
8 pair cable
A pair cable consisting of 8 pairs
8 triple cable
A triple cable consisting of 8 triples
ac electrolytic capacitor
An electrolytic capacitor specially designed for ac operation
ac filter
An electrical filter on the AC side of a converter, designed to reduce the circulation of harmonic currents in the associated system.
ac power supply unit
A power supply unit with ac voltage output
accumulator
A physical object for storing energy, and which after discharge may be recharged.
actuating system of a control switch
A system being all the operating means of a control switch which transmits the actuating force to the contact elements.
adaptor connector
An electrical connector that is a fixed or free component that permits electrical connection(s) between two or more connectors where direct connection is mechanically impossible.
adjustable constant speed motor
An adjustable speed motor that behaves at all speed settings as a constant-speed motor
adjustable speed motor
An electric motor for which the speed for a given load can be adjusted to any value within a specified range.
adjustable thermostatic switch
A thermostatic switch whose operating temperature may be varied by the user by adjusting the actuating mechanism, the position of which can be readily identified.
adjustable varying speed motor
An adjustable speed motor that behaves at all speed settings as a varying-speed motor
aerial insulated cable
An insulated cable designed to be suspended overhead and outdoors.
air circuit-breaker
A circuit-breaker in which the contacts open and close in air at atmospheric pressure.
air contactor
A contactor that has its contacts in air.
air switch
A switch-disconnector in which the contacts are in air
air-blast circuit-breaker
A gas-blast circuit-breaker in which the gas used is air.
air-metal battery
A primary battery in which atmospheric oxygen serves as the active material at the positive electrode and a metal as the negative electrode
air-to-air cooled machine
A closed machine having integral or machine-mounted heat exchanger, using air as the primary and secondary coolant.
air-to-water cooled machine
A closed machine with a heat exchanger using air as primary coolant and water as secondary coolant
alarm panel
A panel containing full set of alarms required for a system or part of it.
alkaline air-zinc battery
An air-metal battery with an alkaline electrolyte and a negative electrode of zinc
alkaline manganese dioxide-zinc battery
An alkaline primary battery with an alkaline electrolyte, a positive electrode containing manganese dioxide and a negative electrode of zinc
alkaline primary battery
A primary battery containing an alkaline electrolyte.
alkaline secondary battery
A secondary battery in which the electrolyte is an alkaline solution
all-or-nothing relay
An electrical relay that is intended to be energized by a quantity whose value is either within its operative range or effectively zero.
alternating current commutator machine
An induction machine having an armature winding connected to a commutator.
alternating current commutator motor
An alternating current motor having an armature winding connected to its commutator and included in an alternating current circuit.
alternating current generator
An electric generator for the production of alternating current and voltage.
alternating current motor
An electric motor driven by alternating electric current
ambient thermostatic switch
A thermostatic switch that responds to changes in the temperature of the space into which its sensing element penetrates or is housed
amplifier
A physical object for increasing the power of a signal
anode
A physical object that is capable of emitting positive charge carriers to and/or receiving negative charge carriers from the medium of lower conductivity.
anti condensation heater
An electric heater to be installed in an apparatus to prevent development of condensate.
anti-pumping device
An interlocking device that prevents reclosing after a close-open operation as long as the device initiating closing is maintained in the position for closing.
anti-twist cable
An electric cable designed to minimize torque under mechanical tension
antipollution-type insulator
An electrical insulator that has the external profile designed for use in polluted areas.
arc lamp
A discharge lamp in which the light is produced by an electric arc.
arc-chute
A physical object that is a chamber into which the arc is transferred to assist in its extinction.
arc-control device
A physical object, surrounding the arcing contacts of a mechanical switching device, designed to confine the arc and to assist in its extinction.
arcing contact
A switch contact on which the arc is intended to be established.
associated phase layout substation
A substation having a layout in which the conductors relating to the three phases of the same circuit are located side by side.
asynchronous machine
An electric rotating machine in which the speed on load and the frequency of the system to which it is connected are not in a constant ratio.
attended substation
A substation that is operated by personnel during the normal working hours and otherwise as necessary.
auto-compound current transformer
A current transformer having an auxiliary winding in series with the secondary of the transformer, especially intended to reduce the phase displacement between the primary and secondary currents
auto-transformer
A power transformer in which a part of the primary coil is used as a secondary, or a part of the secondary is used as a primary coil.
auto-transformer starter
An electric starter for an induction motor which uses for starting one or more reduced voltages derived from an auto-transformer.
automatic load restoration equipment
Automatic switching equipment intended to initiate reclosing of circuit-breakers automatically after tripping due to a load shedding operation
automatic reclosing equipment
Automatic switching equipment which is designed to initiate the reclosing of circuit-breaker(s) after operation of the protection on the associated circuit
automatic reset switch
A pilot switch of which the resetting is automatic
automatic restoration equipment
Automatic reclosing equipment intended to initiate the scheduled, sequential and delayed automatic reconnection of circuit-breakers or other specific switching devices
automatic switching equipment
A physical object that is automatic and designed to initiate the operation of circuit-breakers and/or disconnectors in a substation according to a specific programme
auxiliary contact
A switch contact included in an auxiliary circuit and mechanically operated by the switching device.
auxiliary starting winding
A starting winding of a split phase motor
auxiliary switch of a mechanical switching device
A mechanical switching device containing one or more control and/or auxiliary contacts mechanically operated by a switching device.
auxiliary switchboard
A switchboard (or a cubicle) on which are fixed the devices necessary to control, to protect and to distribute auxiliary ac and dc supplies within a substation.
auxiliary terminal box
A switchboard (or a cubicle) on which are fixed the devices necessary to control, to protect and to distribute auxiliary ac and dc supplies within a substation.
back-pressure set
A turbo-generator set in which the turbine is of the back-pressure type.
ballistic galvanometer
A galvanometer intended to measure the value of an electric energy by reading the amplitude of the first swing of its moving element
band-pass filter
An electrical filter with a very low attenuation for currents within given limits of frequency.
band-stop filter
An electrical filter having a single stop-band with specified cut-off frequencies different from zero or infinite
bar primary bushing type current transformer
A current transformer so constructed that it can be used as a bushing
bar primary type current transformer
A current transformer in which the primary conductor is made up of a bar or a set of bars in parallel
bar winding
A winding consisting of conducting bars intended for use in large rotors.
battery back-up power supply unit
A direct current power supply unit that provides an uninterrupted supply to a load in the event of a main supply failure.
battery casing
An enclosure surrounding and containing the battery cell.
battery charger
A direct current power supply unit for charging batteries.
battery electrode
An electrode that is electrically connected to one terminal of a cell, in electric contact with the electrolyte of that cell and on which the electrode reaction occurs.
battery start system
A start system that uses electric storage batteries and motor(s) to start engines.
belted cable
A multiconductor cable in which part of the insulation is applied to each conductor individually, and the remainder is applied over the assembled cores.
bidirectional diode thyristor
A thyristor having two terminals and substantially the same switching behaviour in the first and third quadrants of the current-voltage characteristic
bidirectional transistor
A transistor that has substantially the same electrical characteristics when the electrodes normally designated as emitter (or source) and collector (or drain) are interchanged
bidirectional triode thyristor
A thyristor having three terminals and substantially the same switching behaviour in the first and third quadrants of the current-voltage characteristic
bifilar winding
A winding consisting of a set of two coils the turns of which consist of two contiguous conductors isolated from one another
bifurcated contact
A connector contact containing forked/branched contact members with one contact point on each branch, designed to improve the reliability of contacting by establishing two conductive paths in parallel.
bimetallic connector
A cable connector formed by two different metals metallurgically bonded, used to connect conducting parts consisting of these same metals
bimetallic instrument
A thermal instrument in which the indication is produced by the deformation of a bimetallic element, heated directly or indirectly due to Joule effect
bipolar junction transistor
A transistor having at least two junctions and whose functioning depends on both majority carriers and minority carriers
bistable relay
An electrical relay that, having responded to an energizing quantity and having changed its condition, remains in that condition after the quantity has been removed.
blade contact
A connector contact that is solid with a rectangular cross-section, usually with a chamfered mating edge.
blasting cable
An electric cable for triggering explosions
blended lamp
A lamp containing in the same bulb a mercury vapour lamp and an incandescent lamp filament connected in series.
blow-out coil
An electromagnetic coil designed to produce a magnetic field arranged to deflect an arc, e.g. into an arc-chute.
board-mounted connector
An electrical connector suitable for being permanently attached to a printed board.
bonded screen
An insulation screen that can be removed only with a special tool, a solvent, the application of heat or by any combination of these
booster transformer
A power transformer of which one winding is intended to be connected in series with a circuit in order to alter its voltage and the other winding is an energizing winding.
braid armour
A cable armour consisting of copper wires, used for earthing and to protect the cable.
break contact
A switch contact that is open when the main contacts of a mechanical switching device are closed and closed when they are open.
break down torque multiplier
A ratio that is an upper limit torque which an asynchronous motor will produce without an abrupt drop in speed divided by the full load torque.
brush box
A physical object that is the part of a brush holder which contains a brush
brush pressure device
A physical object that applies a thrust on the brush to maintain it in contact with the commutator or slip-ring and which is usually a part of the brush-holder.
brush yoke
A yoke on which the brush-holder rocker is mounted when the rocker is not supported by the frame or pedestal of the machine itself.
brush-holder fixing device
A physical object by which a brush-holder is secured to the supporting structure.
brush-holder rocker
A brush-holder supporting structure so arranged that the whole structure may be moved circumferentially.
brush-holder rocker gir
A physical object that is a worm wheel or other gear by means of which the position of the brush-holder rocker may be adjusted.
brush-holder rocker yoke
A support that is a structure on which the brush-holder rocker is mounted when the rocker is not supported by the frame or pedestal of the machine itself.
brush-holder supporting structure
A support that is a structure on which the brush-holders are mounted and are fixed relative to each other.
brushless wound-rotor induction motor
A wound-rotor induction motor in which the ends of the secondary winding are directly connected with an incorporated starting device.
buchholz relay
A non-programmable protection relay that detects gassing of transformer coolant.
buffer amplifier
An amplifier specially designed to prevent variations of the characteristics of electric circuits connected to its output from affecting the input signal.
bulb-type unit
A hydroelectric set with its casing containing the generator and turbine immersed in the water flow.
bulkhead luminaire
A luminare that is a protected luminaire of compact design intended to be fixed directly on a vertical or horizontal surface.
bunched conductor
A stranded conductor in which the wires are assembled together in helical formation in a random manner, all in the same direction and with the same length of lay.
bundle assembled aerial cable
An aerial insulated cable consisting of a group of insulated conductors with or without an uninsulated conductor, twisted together.
bus admittance matrix
A matrix enabling the dependence of the node input currents on the node voltages to be expressed.
bus duct
A physical object that is an assembly of busbar, bus duct enclosure, busbar insulation mounts etc.
bus duct enclosure
An enclosure for bus bars
bus impedance matrix
A matrix that is the inverse bus admittance matrix.
bus type current transformer
A current transformer without primary conductor, but with primary insulation, which can be fitted directly over a conductor or busbar.
busbar
An electrical conductor that is of low-impedance, to which several electric circuits can be connected at separate points
busbar chamber
A switchgear and controlgear compartment that contains busbars.
bushing type current transformer
A current transformer without primary conductor and primary insulation of its own which can be fitted directly over an insulated bushing or conductor.
butt contact
A switch contact in which relative movement of the contact pieces is substantially in a direction perpendicular to the contact surface.
butting connector
An electrical connector in which connection is achieved between non-penetrating contacts and maintained by axial pressure.
button
A physical object that is a control device of a push-button switch which moves under manual pressure, generally in the direction of the axis of the button
buzzer
A physical object that has an electric mechanism for producing an intermittent current and a buzzing sound or series of sounds.
cable adaptor
A physical object that is a part of a connector or an accessory consisting of a rigid housing for attachment to the connector body.
cable armour
A cover that consists of a metal tape(s) or wires, generally used to protect the cable from external mechanical effects.
cable armour cross-section area
A cross section area that is the total cross-section area of the cable armour in an electric cable.
cable assembly
A physical object consisting of a cable, and two or more connectors
cable bedding
A cable layer that is a cushioning layer or layers applied to a cable immediately beneath a metallic layer such as the armour or the reinforcement.
cable box
An enclosure that is a part of a motor terminal box and may be used instead of cable glands
cable bracket
A support that is horizontally fixed at one end only, spaced at intervals, and on which cables rest
cable braid
A cable layer formed from plaited metallic or non-metallic material.
cable breeches joint
A cable joint where the axes of the two cables are approximately parallel.
cable chamber
A switchgear and controlgear compartment intended for installing incoming and outgoing cables
cable channel
A physical object above or in the ground or floor, open, ventilated or closed, and having dimensions which do not permit the entry of persons but allow access to the conduits and/or cables throughout their length during and after installation
cable clamp
A cable fastener that is an accessory or part of a component to grip the cable or wire in order to provide strain relief and absorb mechanical stress which would otherwise be transmitted to the termination
cable cleat
A cable fastener disposed at intervals and which mechanically retains a cable or a conduit
cable conductor
An electrical conductor that has the specific function of carrying current.
cable conduit bend
A cable conduit section where the angle between the vectors normal to the end planes differs from 180 degrees
cable conduit cross
A cable conduit section that is cross formed
cable conduit joint
A cable conduit section intended for splicing cable conduit sections
cable conduit reducer
A cable conduit section intended to join cable conduit sections of different diameters
cable conduit section
A physical object that is a part of a closed wiring system of generally circular cross section for insulated conductors and/or cables in electrical or communication installations, allowing them to be drawn in and/or replaced.
cable conduit straight
A cable conduit section that is a straight line
cable conduit tee
A cable conduit section intended to connect a cable conduit section perpendicular to another
cable connector
A physical object which is a metallic device intended to connect cable conductors together
cable core
A physical object that is an assembly consisting of a conductor with its own insulation (and screens if any)
cable core marker
A label plate intended to be attached to cable cores for the purpose of identification
cable double branch joint
A cable joint making a connection of two branch cables to a main cable where, in most cases, the axes of the cables are approximately parallel
cable end cap
An enclosure that is a device placed on the ends of a cable to prevent the ingress of moisture during storage, transportation and installation
cable fastener
A physical object intended to fasten a cable
cable filler
A compound that is used to fill the interstices between the cores of a multiconductor cable.
cable gland
A support that supports a cable on entry to where the cable is to be terminated
cable gland plate
A plate through which cables pass and are typically supported with cable glands.
cable insulation layer
A cable layer that is a layer of insulation around the cable cores in a cable.
cable joint
A physical object for joining cables.
cable ladder bend
A cable ladder section that is a bend
cable ladder bend 30 deg
A cable ladder fixed bend where the angle between the vectors normal to the end planes is 30 degrees.
cable ladder bend 45 deg
A cable ladder fixed bend where the angle between the vectors normal to the end planes is 45 degrees.
cable ladder bend 60 deg
A cable ladder fixed bend where the angle between the vectors normal to the end planes is 60 degrees.
cable ladder bend 90 deg
A cable ladder fixed bend where the angle between the vectors normal to the end planes is 90 degrees.
cable ladder cover
A cable ladder section that is a cover used to protect cables installed on a cable ladder
cable ladder cross
A cable ladder section that is a cross
cable ladder divider
A cable ladder section intended to divide between different cable systems and duties
cable ladder fixed bend
A cable ladder bend that is fixed.
cable ladder fixed joint
A cable ladder joint that is a fixed device for splicing cable ladder parts
cable ladder flexi-bend
A cable ladder bend that is adjustable.
cable ladder flexible joint
A cable ladder joint that is flexible
cable ladder inside riser
A cable ladder riser that changes the elevation of cables running inside the bend
cable ladder joint
A cable ladder section intended to join other cable ladder sections
cable ladder outside riser
A cable ladder riser that changes the elevation of cables running outside the bend
cable ladder reducer
A cable ladder section intended to join cable ladders having different width
cable ladder reducer left
A cable ladder reducer that is reduced on the right hand side.
cable ladder reducer right
A cable ladder reducer that is reduced on the left hand side.
cable ladder riser
A cable ladder section that changes the elevation of cables between horizontal and vertical
cable ladder section
A physical object consisting of a series of transverse supporting elements rigidly fixed to main longitudinal supporting members
cable ladder straight
A cable ladder section that is a straight length
cable ladder tee
A cable ladder section that is joint between 3 other cable ladder sections
cable layer
A physical object that is part of the cable construction
cable lug
A cable connector which is fastened to the conductor end.
cable marker
A label plate intended to identify cables.
cable rack
A support intended to receive cables that are usually arranged to run side by side.
cable reel
A physical object that is a reel on to which cable is wound during manufacture, for storage, transportation and installation.
cable reinforcement
A cable layer consisting of tapes, strips or wires, usually metallic, applied over a sheath to enable it to withstand mechanical stresses generally due to internal pressure.
cable screen
A cable layer consisting of conducting layer(s) having the function to control the electric field within the insulation.
cable screen clamp
A cable clamp to terminate the cable screen
cable sectionalising joint
A cable joint where the metallic sheath, shield and insulation screen of the cable are electrically interrupted.
cable separator
A cable layer that is a thin layer used as a barrier to prevent mutually detrimental effects between different components of a cable, such as between the conductor and insulation or between insulation and sheath.
cable sheath
A cable layer that is a uniform and continuous tubular covering made of conductive or insulating material.
cable shield
A cable layer that is a surrounding earthed metallic layer to confine the electric field within the cable and/or to protect the cable from external electrical influence.
cable shroud
An enclosure that is used to cover the cable and the gland when the cable is entering an equipment to avoid water and dust ingress.
cable stop joint
A cable joint making a connection between two cables where the fluid in one cable is segregated from the fluid or the insulation of the other cable by a pressure resisting barrier.
cable straight joint
A cable joint making a necessary connection between two cables to form a continuous circuit.
cable tee joint
A cable joint where the axes of the two cables are approximately at right angle
cable transition joint
A cable joint making a connection between two cables having different types of insulation.
cable tray bend
A cable tray section that turns the direction of the cable tray run through an angle in the plane of the cable tray
cable tray bend 45 deg
A cable tray fixed bend where the angle between the vectors normal to the end planes is 45 degrees.
cable tray bend 90 deg
A cable tray fixed bend where the angle between the vectors normal to the end planes is 90 degrees.
cable tray cover
A cable tray section that is a cover used to protect cables installed on a cable tray
cable tray cross
A cable tray section that provides a cross between two cable tray runs
cable tray fixed bend
A cable tray bend that is fixed.
cable tray fixed joint
A cable tray joint that is fixed
cable tray flexi-bend
A cable tray bend that is adjustable.
cable tray flexible joint
A cable tray joint that is adjustable
cable tray inside riser
A cable tray riser intended to change the elevation of cables running inside the bend
cable tray joint
A cable tray section intended to join other cable tray sections
cable tray marker
A label plate that is intended to give identification to cable trays and ladders.
cable tray outside riser
A cable tray riser intended to change the elevation of cables running outside the bend.
cable tray reducer
A cable tray section intended to join cable trays with different width
cable tray riser
A cable tray section that changes the elevation of cables between horizontal and vertical
cable tray section
A physical object consisting of a continuous base, raised edges and no covering
cable tray straight
A cable tray section that is straight
cable tray tee
A cable tray section that is a tee for joining one cable tray run to the side of another run
cable trifurcating joint
A cable joint making a connection between a three-core cable and three single-core cables.
cable trough
A channel intended to enable secondary, auxiliary and control cables to be laid within a substation.
cable trunking bend
A cable trunking section where the angle between the vectors normal to the end planes differs from 180 degrees
cable trunking cover
A removable cover that is a part of a cable trunking section
cable trunking cross
A cable trunking section formed as a cross
cable trunking joint
A cable trunking section intended for splicing cable trunking sections
cable trunking reducer
A cable trunking section intended to join cable trunking sections of different width
cable trunking riser
A cable trunking section that changes the elevation of cable trunking sections
cable trunking riser inside
A cable trunking riser that changes the elevation of cables running inside the bend
cable trunking riser outside
A cable trunking riser that changes the elevation of cables running outside the bend
cable trunking section
A physical object which is a closed enclosure comprising a base with a removable cover intended for complete surrounding of insulated conductors, cables, cords and for the accommodation of other electrical equipment
cable trunking straight
A cable trunking section that is a straight length
cable trunking system
A system of closed enclosure comprising a base with a removable cover, intended for the complete surrounding of insulated conductors, cables, cords and/or for the accommodation of other electric equipment including information technology equipment.
cable trunking tee
A cable trunking section intended to connect a cable trunking section perpendicular to another
cable tunnel
A physical object which is a corridor whose dimensions allow persons to pass freely throughout the entire length, containing supporting structures for cables and joints and/or other elements of wiring systems
cable type current transformer
A current transformer without primary conductor and primary insulation of its own, which can be mounted over an insulated cable
cage induction motor
An induction motor in which a primary winding on one member, usually the stator, is connected to the power source, and a secondary cage-winding on the other member, usually the rotor, carries induced current.
cage synchronous motor
A salient pole synchronous motor that has a cage winding embedded in the pole shoes for starting.
cage winding
A winding consisting of a number of conducting bars having their extremities connected by conducting rings or plates at each end.
canned machine
An electric rotating machine of which specified parts are completely enclosed and protected against a fluid by a sealing sheath
cap and pin insulator
An electrical insulator comprising an insulating part having the form of a disk or bell, with or without ribs on its lower surface, and fixing devices consisting of an outside cap and an inside pin attached axially.
capacitance graded bushing
An electrical bushing in which a desired voltage grading is obtained by an arrangement of conducting layers incorporated in the insulating material.
capacitor
A physical object that stores electricity during part of an operation
capacitor bank
A physical object that is a number of capacitor units connected so as to act together
capacitor bushing
An electrical bushing in which a desired voltage grading is obtained by an arrangement of capacitors.
capacitor element
A physical object consisting essentially of two electrodes separated by a dielectric.
capacitor installation
A physical object that is one or more capacitor banks and their accessories
capacitor motor
A split phase motor in which the phase displacement results from a capacitor in the auxiliary circuit.
capacitor stack
A physical object that is an assembly of capacitor units connected in series
capacitor start and run motor
A capacitor motor in which the auxiliary circuit is energized during both starting and running.
capacitor start motor
A capacitor motor in which the auxiliary circuit is energized only during the starting period.
capacitor unit
A physical object that is an assembly of one or more capacitor elements in the same container with terminals brought out
capacitor voltage transformer
A voltage transformer comprising a capacitor divider unit and an electromagnetic.
carbon filament lamp
An incandescent lamp whose luminous element is filament of carbon.
carbon-zinc battery
A primary battery such as Leclanché or zinc chloride batteries
cascade voltage transformer
A voltage transformer in which the primary winding is equally distributed over two or more insulated magnetic cores suitably electro-magnetically coupled.
cathode
A physical object that is capable of emitting negative charge carriers and/or receiving positive charge carriers from the medium of lower conductivity.
centre-break disconnector
A disconnector in which both contacts of each pole are movable and engage at a point substantially midway between their supports.
change over contact relay
A control relay that has change-over contacts.
change-over break-before-make contact
A change-over contact, one contact circuit that breaks before the other makes.
change-over contact
An electrical contact that is a combination of two contact circuits including three contact members, one of them being common to the two contact circuits. When one of these contact circuits is open, the other is closed and vice versa.
change-over make-before-break contact
A change-over contact, one contact circuit that makes before the other breaks.
change-over switch
A manual control switch for changing the connections from one set of its terminals to another.
change-over with neutral position
A change-over contact having a stable position in which its two contact circuits are open (or closed)
charge controller
A controller for controlling the quantity of unbalanced electricity in a body.
chromium oxide-lithium battery
A non-aqueous lithium battery with a positive electrode containing chromium oxide as active material, a negative electrode of lithium and a non-aqueous, organic solution as electrolyte
circuit-breaker
A mechanical switching device that at regular intervals interrupts an electric current.
circuit-breaker trip mechanism
A device that trips a circuit-breaker .
circuit-breaker winding gear
A physical object that is a gear for winding a circuit-breaker out/in from switchgear compartment.
circuit-breaker with lock-out preventing closing
A circuit-breaker in which none of the moving contacts can make current if the closing command is initiated while the conditions which should cause the opening operation remain established.
circular connector
An electrical connector that is basically cylindrical and has a mating face with a basically circular periphery.
clock
A timepiece for the measurement of time.
closed machine
An electric rotating machine where no medium from the surrounding medium, for the purpose of cooling, passes through the machine
coaxial cable
An electric cable consisting of an inner conductor surrounded by an outer tubular conductor.
coaxial jack
A jack designed to attach to free end of coaxial cable.
cold cathode lamp
A discharge lamp in which the light is produced by the positive column of a glow discharge.
cold starterless fluorescent lamp
A startless fluorescent lamp of cold start type.
cold-start lamp
A discharge lamp designed to start without preheating of the electrodes.
collective screen
A cable screen that is a common screen for all the conductors in a cable.
collectively shielded cable
A multicore cable having a shield arranged around the cores concentrically with the axis of the cable.
combined transformer
An instrument transformer consisting of a current and a voltage transformer in the same case.
common screened electric cable
An electric cable where all the insulated conductors are surrounded by a common protective shield connected to earth to prevent signal disturbance created by electromagnetic fields.
common winding
A transformer winding that is the common part of the windings of an auto-transformer
commutating winding
An excitation winding, in a machine having a commutator, that carries the load current or a current proportional thereto and is so disposed as to accelerate the reversal of current in the coils undergoing commutation
commutator
A physical object usually consisting of a ring of copper segments separated by insulating strips, connected with the armature of a dynamo, which by revolving in contact with the brushes, directs and makes continuous the current produced in the armature coils of the machine.
commutator segment
A physical object that is a conducting member of a commutator, which is connected to the common end of two consecutive sections of a winding.
commutator type frequency converter
A rotating frequency converter the rotor of which has one or two windings connected to a set of slip-rings and to a commutator such that by feeding one set of brushes with a voltage of a given frequency, a voltage of another frequency may be obtained from the other set.
compacted conductor
A stranded conductor in which the interstices between the component wires have been reduced by mechanical compression or by drawing or by suitable choice of the shape and disposition of wires.
compensated repulsion motor
A repulsion motor in which the primary winding on the stator is connected in series with the rotor winding via a second set of brushes on the commutator in order to improve the power factor and commutation.
compensating winding
An excitation winding that carries the load current or a current proportional thereto and is so disposed as to reduce distortion of the magnetic field by the load current passing through other windings
completely immersed bushing
An electrical bushing both ends of which are intended to be immersed in insulating media other than ambient air ( e.g. oil or gas).
composite insulator
An electrical insulator made of at least two insulating materials: the core and the external envelope.
compound-wound current transformer
A current transformer having an auxiliary winding with an independent supply especially intended to reduce the phase displacement between the primary and secondary currents
compressed air power station
A power station equipped with gas turbines using stored compressed air.
computing relay
An electrical relay intended to carry out a calculation
concentrated winding
A winding of a field system with salient poles or a winding the coil sides of which occupy only one slot per pole
concentric conductor
A cable conductor so constructed as to surround one or more insulated conductors.
concentric contact
A connector contact that is set of coaxial contacts providing independent circuits through a single mechanical assembly.
concentric neutral cable
An electric cable having a concentric conductor which is intended to be used for the neutral.
concentric winding
A distributed winding in which the individual coils of each phase group per pole are concentric and have different coil spans
concentrically stranded circular conductor
A stranded conductor in which the individual wires are assembled together in helical formation, in one or more separate concentric layers and generally with an alternating direction of lay.
condensing set
A turbo-generator set in which the turbine is of the condensing type.
condensing set with reheat
A condensing set with equipment for reheating steam after its partial expansion in the turbine.
conditioned ac power supply unit
An ac power supply unit in which the output meets strict tolerances.
conductivity transmitter
A transmitter that is intended to measure and transmit conductivity
conductor
A physical object having the property of conducting or permitting the passage of heat, electricity, or other form of energy.
conductor insulation
An electrical insulator that is a material applied on a conductor or a conductor screen.
conductor screen
A cable screen of non-metallic and/or metallic material covering the conductor.
conductor strand
An electrical conductor that is a single wire of conducting metal intended to be formed into a stranded conductor
conduit adaptor
A physical object to secure a connector to a conduit
conical rotor machine
An electric rotating machine with a rotor in the shape of a frustum of a cone.
conical rotor motor
An electric motor with a rotor in the shape of a frustum of a cone.
connector contact
A physical object that mates with a corresponding element to provide an electric path.
connector mated set
An electrical connector that is a particular combination of mating connectors
constant speed motor
An electric motor with inherently constant or substantially constant speed over its normal range of load.
contact assembly
An electrical contact that is an assembly of contact members, with their insulation, which close or open their contact circuit by their relative movement.
contact tip
A feature that is a part of a contact member at which the contact circuit closes or opens.
contactor
A mechanical switching device having only one position of rest, operated otherwise than by hand, capable of making, carrying and breaking currents under normal circuit conditions including operating overload conditions.
contactor coil
An electromagnetic coil that operates a contactor when energised.
contactor relay
A contactor used as a control switch.
control compartment
A switchgear and controlgear compartment that contains control devices.
control contact
A switch contact included in a control circuit of a mechanical switching device and mechanically operated by this device.
control discrepancy switch
A discrepancy switch incorporating a control function.
control panel
An instrument panel containing a set of indicating devices and control units required for operation of a system or part of it.
control relay
An electrical relay that is operating by permitting the next step in a control circuit.
control station
A switchgear and controlgear that is an assembly of one or more control switches fixed on the same panel or located in the same enclosure.
control switch
A switch that serves the purpose of controlling the operation of switchgear or controlgear, including signalling, electrical interlocking, etc.
control winding
An excitation winding that carries an adjustable current controlling the performance of a machine
conventional thermal power station
A thermal power station in which the thermal energy is obtained by a combustion of coal or hydrocarbons.
converter data sheet
A data sheet for a converter
converter substation
A substation including converters and the main function of which is to convert alternating current into direct current or vice versa.
copper oxide-zinc battery
An alkaline primary battery with a positive electrode containing copper oxide as active material and a negative electrode of zinc
cord
A flexible cable with a limited number of conductors of small cross-sectional area.
core box
A terminal box that is used to terminate cable cores.
core of an insulator
A physical object that is the central insulating part of an insulator which provides the mechanical characteristics and from which the sheds project.
counter relay
An electrical relay that is controlled by a counter
crimp contact
A connector contact having a conductor barrel designed to be crimped
cuprous chloride-magnesium battery
A primary battery with a positive electrode containing cuprous chloride as active material, a negative electrode of magnesium and a salt solution as electrolyte
current generator
An electric generator whose impedance is much higher than that of its load
current injection test set
A physical object that injects an electric current into a circuit for test purposes
current limiter
A physical object that sets an upper limit to the current which can be passed.
current matching transformer
A current transformer for matching the rated secondary current of the main current transformer to the rated current of the burden, or for reducing the instrument security factor
current regulator
A regulator to control the electrical current supplied to an unit.
current transformer
An instrument transformer in which the secondary current, in normal conditions of use, is substantially proportional to the primary current and differs in phase from it by an angle which is approximately zero for an appropriate direction of the connections.
current transformer primary winding
A transformer winding through which flows the current to be transformed
current transformer secondary winding
A transformer secondary winding that supplies the current circuits of measuring instruments, meters, protective or control devices
current transmitter
A transmitter that transmits an analogue electrical current
current-limiting circuit-breaker
A circuit-breaker with a break-time short enough to prevent the short circuit current reaching its otherwise attainable peak value.
current-limiting fuse-link
A fuse-link that, during and by its operation in a specified current range, limits the current to a substantially lower value than the peak value of the prospective current.
cycloconverter
An electronic frequency converter that by creating an alternating voltage from successive voltage samples of suitable frequency and duration provides a higher or lower output frequency.
cylindrical post insulator
A post insulator of approximately cylindrical shape consisting of one or more insulating components with a metal fitting attached to each end.
cylindrical rotor machine
An electric rotating machine having a cylindrically shaped rotor the periphery of which may be provided with slots which accommodate the coil sides of a winding.
dc filter
An electrical filter on the DC side of a converter, designed to reduce the ripple in the associated system.
dead tank circuit-breaker
A circuit-breaker with interrupters in an earthed metal tank
definite purpose motor
An electric motor designed, listed and offered in standard ratings with operating characteristics and mechanical construction suitable for use on a particular type of application.
definite time-delay over-current release
An over-current release that operates with a definite time-delay, which may be adjustable, but is independent of the value of the over-current.
dehydrating breather
A physical object that prevents moisture being drawn into an item or equipment
delay line
A physical object intended to introduce a desired delay in the transmission of a signal, without modifying the other characteristics of the signal
delay on de-energise relay
A timer relay that delays switching the contacts when the coil is de-energised.
delay on energise relay
A timer relay that delays switching the contacts when the coil is energised.
delta connected winding
A transformer winding so arranged that the phase windings of a three-phase transformer or reactor, or the windings for the same rated voltage of single-phase transformer or reactors associated in a three-phase bank, are connected in series to form a closed circuit
dependent-time measuring relay
A specified-time relay that is also a measuring relay for which times depend, in a specified manner, on the value of the characteristic quantity.
deri motor
A repulsion motor having two sets of brushes of which one set is fixed and the other movable.
diamond winding
A distributed winding in which all coils have the same shape and coil span
difference galvanometer
A galvanometer intended to measure the difference between two currents
diffuser lamp
A lamp used to alter the spatial distribution of radiation and depending essentially on the phenomenon of diffusion.
diode
An electronic tube containing only an anode and a cathode.
dip-solder contact
A connector contact with a termination intended to be bath-soldered.
direct ac converter
An electronic ac converter without a dc link.
direct acting instrument
An indicating instrument in which the indicating or recording device is mechanically connected to, and actuated by, the moving element
direct cooled winding
A winding mainly cooled by coolant flowing in direct contact with the cooled part through hollow conductors, tubes, ducts or channels which, regardless of their orientation, form an integral part of the winding inside the main insulation
direct current machine
An electric rotating machine incorporating an armature winding connected via a commutator to a direct current system and having magnetic poles which are excited from a source of direct or undulating current or which are permanent magnets
direct current power supply unit
A power supply unit with dc voltage output.
direct current relay
An electrical relay designed for operation from a direct current source.
direct dc converter
An electronic dc converter without an ac link.
direct over-current release
An over-current release directly energized by the current in the main circuit of a mechanical switching device.
direct water-cooled machine
An electric rotating machine using water as primary coolant
direct-on-line starter
A starter that connects the line voltage across the motor terminals in one step.
discharge lamp
A lamp in which the light is produced, directly or indirectly, by an electric discharge through a gas, a metal vapour or mixture of several gases and vapours.
disconnectable busbar
A busbar including disconnector(s) in series intended to connect or disconnect two sections of that busbar, off load.
disconnector
A mechanical switching device that provides, in the open position, an isolating distance in accordance with specified requirements.
disconnector-fuse
A disconnector in which one or more poles have a fuse in series in a composite unit.
discrepancy switch
A control switch that is a switched indicator, with an acknowledgement facility, which shows any discrepancy between the actual and indicated state of the equipment being monitored.
distributed winding
A winding the coil sides of which occupy several slots per pole
distribution board
A switchgear and controlgear that is an insulated panel carrying terminals, fuses, etc, for controlling a number of subsidiary electrical circuits.
diverter spool
A resistor connected in parallel with the series winding or the compole winding of a dc machine in order to divert some of the current from it, thereby varying the m.m.f. produced by the winding.
divided support disconnector
A disconnector in which the fixed and moving contacts of each pole are not supported by a common base or frame.
divided support earthing switch
An earthing switch in which the fixed and moving contacts of each pole are not supported by a common base or frame.
dotted line recorder
A printing recorder in which the record comprises a series of points, numerals, etc.
double busbar substation
A substation in which the lines and transformers are connected via two busbars by means of selectors.
double converter
An electronic dc converter that is a current stiff reversible ac/dc converter with direct current in both directions.
double-break disconnector
A disconnector that opens a circuit at two points.
downlight
A luminaire concentrating the light, usually recessed in the ceiling.
draw lead bushing
An electrical bushing not having an integral current-carrying conductor.
drop-out fuse
A fuse in which the fuse-carrier automatically drops into a position providing an isolating distance after the fuse has operated.
drum recorder
A recording instrument in which the chart is wrapped as a single turn around a cylindrical drum which is rotated by the chart driving mechanism
dry primary battery
A primary battery containing an immobilized electrolyte
dry-type reactor
An electrical reactor of which the magnetic circuit and winding are not immersed in an insulating liquid
dry-type transformer
A power transformer of which the magnetic circuit and windings are not immersed in an insulating liquid.
duct
A physical object that is a conduit for an electric cable or the like
duplex lap winding
A lap winding in which the number of parallel circuits is equal to twice the number of poles
duplex wave winding
A wave winding in which the number of parallel circuits is four, whatever the number of poles
dynamometer voltmeter
A voltmeter operating on the dynamometric principle
dynamometer wattmeter
A wattmeter operating on the dynamometric principle.
earth busbar
An electrical conductor that is a busbar used for earthing.
earth circuit connector
An earthing connector that is designed to connect together the different parts of an earthing system within a substation.
earth electrode
An electrode, which is the conductive part, that can be embedded in a specific conductive medium, e.g. concrete or coke, in electric contact with the Earth.
earth fault relay
A relay that operates when a failure of insulation to earth is detected in the equipment or circuits protected.
earth leakage circuit-breaker
An air circuit-breaker intended to break the supply in the event of an earth fault being detected
earth leakage detector
A detector intended to detect a leakage current to earth
earth plate
An electrode that is an earth electrode consisting of a metal plate buried in the ground.
earth resistance meter
An ohmmeter intended to measure the resistance of an earth connection
earthed voltage transformer
A voltage transformer that is single phase and intended to have one end of its primary winding directly earthed, or a three phase voltage transformer which is intended to have the star point of its primary winding directly earthed
earthing and lightning system
An earthing system that includes all earthing circuits and lightning protection systems of the plant as well as all anodic protection systems.
earthing autotransformer
An auto-transformer that is connected to a polyphase system in such a way that a neutral point is artificially obtained.
earthing boss
An electrical conductor that is used to connect the earthing system to structure.
earthing conductor
An electrical conductor that provides a conductive path, or part of the conductive path, between a given point in a system or in an installation or in equipment and an earth electrode.
earthing connector
An electrical connector designed to provide a low resistance connection to earth.
earthing lug
A cable connector intended to connect the earthing system to earth.
earthing strap
An electrical conductor that is used to equalise the potential between different structures.
earthing stud
An electrical conductor that attaches to the earth system
earthing switch
A disconnector for earthing parts of a circuit, capable of withstanding for a specified time currents under abnormal conditions such as those of short circuit, but not required to carry current under normal conditions of the circuit.
earthing system
An electrical system that is an arrangement of connections necessary to earth equipment or a system separately or jointly.
earthing test set
A physical object for testing the resistance to earth.
eddy current coupling
An induction coupling in which the secondary currents are induced as eddy currents in the secondary member.
edge-socket connector
An electrical connector into which the edge of a printed board is inserted to make contact directly to edge-board contacts.
electric actuator
An actuator that produces a specified movement when excited by an electric signal.
electric battery
An electric accumulator that comprises one or more cells fitted with devices necessary for use, for example case, terminals, marking and protective devices.
electric battery bank
A physical object consisting of a number of electric batteries connected together to store and supply electrical energy
electric battery cell
A physical object that is a single electrochemical system, consisting of positive and negative electrodes and an electrolyte to transport ions between them
electric cable
An electrical conductor consisting of one or more insulated conductors surrounded by one or more common protective shield(s) intended to transport electric current.
electric converter
An electric signal transducer intended to convert one form of electrical power to a different form of electrical power.
electric coupling
A power transmission coupling that is a machine which transmits torque from one shaft to another by electromagnetic or magnetic means.
electric generator
An energy transducer that transforms non-electric energy into electric energy
electric heater
A heater in which electric energy is converted into heat for useful purposes.
electric indicator
An indicating instrument that indicates electro-magnetic currents.
electric industrial motor
An electric motor designed for industrial purposes
electric line
A physical object that is an arrangement of conductors, insulating materials and accessories for transferring electricity between two points of a system.
electric machine
An energy transducer that can transform electric energy into mechanical energy or vice versa.
electric marine motor
An electric motor designed for marine purposes
electric measuring instrument
A detecting instrument intended to measure an electric or non-electric quantity using electric or electronic means
electric motor
An electric machine for transforming electric energy into mechanical energy
electric motor cooling fan
A fan that is intended to cool an electric motor.
electric motor with canopy
An electric motor equipped with a motor canopy to prevent rain from entering the cooling air inlet.
electric oscillator
A physical object that is an apparatus for generating oscillatory currents by non-mechanical means
electric plug
An electrical connector designed to be inserted into a suitable socket to establish an electrical connection
electric protection device
A physical object that cuts the power when a predefined value is exceeded, e.g. a temperature.
electric rotating machine
An electric machine depending on electromagnetic induction for its operation and having components capable of relative rotary movement and intended for converting energy.
electric saw
A saw that is powered by an electric motor.
electric screen
A physical object of conductive material intended to reduce the penetration of an electric field into a given region.
electric sensor
An electric signal transducer that, when excited by a physical phenomenon, produces an electric signal characterising the physical phenomenon.
electric submersible motor
An electric motor designed to operate submerged, but isolated from the liquid to be pumped, and which is cooled by a clean liquid or gas
electric timer
A timer that is electrically powered
electrical accumulator
An accumulator which converts chemical energy into electrical energy by reversible chemical reactions and that may be recharged by passing a current through it in the direction opposite to that of its discharge.
electrical barrier
A physical object that is made of a refractory material and that is intended to localize or direct any arc which may arise on the operation of a circuit-breaker
electrical booster
An electric machine imposed in a circuit for the purpose of increasing or otherwise regulating the electromotive force acting in the circuit.
electrical bushing
An electrical insulator that enables one or several conductors to pass through a partition such as a wall or a tank, and insulates the conductors from it.
electrical conductor
A conductor intended to conduct electric current
electrical connection
A connection that is the linking up of electric current by contact.
electrical connector
A connector for holding two parts of a conductor in intimate contact
electrical contact
A physical object that is the conductive element in a component which mates with a corresponding element to provide an electrical path.
electrical contact brush
A physical object that is a piece of metal terminating in metallic wires, or strips of flexible metal, used for securing good metallic connexion between two portions of an electric instrument
electrical contact brush holder
A support that is a structure which maintains one or more brushes in a definite position relative to a commutator or slip-ring and usually applies an approximately constant thrust on the brush or brushes.
electrical distribution unit
An electrical conductor that has several power distribution points.
electrical dynamometer
An electric rotating machine equipped with means for indicating torque and additionally with means for indicating speed when used for determining power.
electrical filter
A physical object that is a passive circuit that attenuates all signals except those within one or more frequency bands.
electrical heater coil
An electrical heating element for heating a fluid by electric power.
electrical heating element
An electrical conductor in which heat is produced by the passage of an electric current through a resistance.
electrical insulator
A physical object that entirely or to a great degree prevents the passage of electricity or heat between contiguous bodies
electrical isolator
An isolator that isolates electrical conductors.
electrical motor starter
A starter in which the force for closing the main contacts is provided exclusively by electrical energy.
electrical network system
An electrical system which can include interconnected electrical conductors or components, a series of transmitters and receivers capable of being linked together, computers linked together to obtain transfer of data, sharing of processing capability, accessibility from many locations, etc.
electrical node
A node that is a point on an aerial or in a circuit where the current or voltage is zero.
electrical power carrier
An electrical conductor for distribution of electrical power.
electrical power distribution system
An electrical system that comprises all facilities which are necessary to distribute electrical power over the plant, from the point of main intake to the take over connection of the various users including all intermediate distribution panels and potential step down transformers.
electrical power generation system
An electrical system comprising power generation facilities for the generation of the plant's normal power, back-up power or emergency power.
electrical power supply system
An electrical system that is the receiving system for general grid power supply and comprises all installations, from point of tie in up to and including the main plant intake transformer and switchgear from where the plant power is distributed.
electrical reactor
A physical object that provides reactance in a circuit.
electrical relay
A relay designed to produce sudden, predetermined changes in one or more electrical output circuits when certain conditions are fulfilled in the electrical input circuits controlling the device.
electrical rotor
A rotor that is the rotating part in an electric motor.
electrical socket
An electrical connector in which the terminals of an electricity supply are inside holes made to receive the pins of a plug.
electrical stator
A stator that is the stationary part of an electric motor.
electrical supply connection
An electrical connection where the electrical supply is connected to an electrical consumer.
electrical switch
A switch that turns electrical current on and/or off.
electrical system
A system intended to receive, produce, distribute and/or maintain the electrical power supply.
electrical test set
A physical object intended to test an electric circuit or device
electrical wire
A physical object that is a metal wrought into the form of a slender rod or thread, formerly by hammering, now by the operation of wire-drawing.
electro-magnetic trip element
A trip element that trips a contactor using electro-magnetic forces.
electrode
An electrical conductor by means of which electricity enters or leaves an electrolyte, gas, or other medium, or a vacuum.
electrodynamic meter
A watt-hour meter that operates by the rotation of the moving coil of an electrodynamic measuring element
electrolyte
A liquid compound that is capable of conducting an electric current.
electrolytic capacitor
A capacitor in which the dielectric consists of an anodically formed oxide film on one or both electrodes.
electromagnet
A magnet that is a piece of soft iron surrounded by a coil of wire, through which a current of electricity may be passed, rendering the iron temporarily magnetic.
electromagnet yoke
A yoke that is a fixed ferromagnetic part, usually not surrounded by a winding, whose principal purpose is to complete the main magnetic circuit.
electromagnetic coil
A winding that is a set of series-connected turns, usually coaxial.
electromagnetic screen
An electric screen of conductive material intended to reduce the penetration of a time-varying electromagnetic field into a given region.
electromechanical relay
An electrical relay in which the designed response is developed by the relative movement of mechanical elements under the action of a current in the input circuit.
electrometer
A detecting instrument for ascertaining the quality and quantity of electricity in an electrified body.
electronic ac converter
An electronic converter for ac conversion.
electronic ac power controller
An electronic converter that is able to operate as a controllable direct electronic a.c. voltage converter as well as an electronic a.c. switch.
electronic ac power switch
A semiconductor switching device capable of switching alternating current.
electronic ac voltage converter
An electronic ac converter for changing the voltage.
electronic converter
An electric converter for electronic power conversion, comprising one or more electronic valve devices, transformers and filters if necessary and auxiliaries if any.
electronic dc converter
An electronic converter for dc conversion.
electronic dc power controller
An electronic converter that is able to operate as a controllable direct electronic dc voltage converter as well as an electronic dc switch.
electronic dc power switch
A semiconductor switching device capable of switching direct current.
electronic frequency converter
An electronic ac converter for changing the frequency.
electronic measuring instrument
A detecting instrument intended to measure an electric or non-electric quantity using electronic means
electronic phase converter
An electronic ac converter for changing the number of phases.
electronic power inverter
An electronic converter that changes direct electric current to single-phase or polyphase alternating currents.
electronic tube
A physical object that is a sealed container containing two or more electrodes between which an electric current can be made to flow.
electroscope
A voltmeter for ascertaining the presence of electricity, and its quantity if present.
electrostatic instrument
A voltmeter intended to determine potential difference which operates by means of electrostatic forces between fixed and moveable charged electrodes
emergency power distribution system
An electrical power supply system that provides back up power in case of emergency, as well as in the case of power failure from the main grid line.
encapsulated-winding dry-type reactor
A dry-type reactor having its winding encapsulated with solid insulation
encapsulated-winding dry-type transformer
A dry-type transformer having one or more windings encapsulated with solid insulation
enclosed fuse-link
A fuse-link in which fuse-element(s) is (are) totally enclosed, so that during operation within its rating it cannot produce any harmful external effects e.g. due to development of an arc, the release of gas or the ejection of flame or metallic particles.
enclosed switchgear and controlgear
A switchgear and controlgear that is an assembly enclosed on all sides, top and bottom in such a manner as to provide a specified degree of protection.
energy storage capacitor
A power capacitor intended to store energy and release it within a very short time
energy transducer
A transducer for transforming energy between two different forms.
environment resistant connector
An electrical connector provided with means for protection against moisture, temperature and contamination.
equivalent network system
An electrical network system that may replace a given network without changing the state variables at specified boundary nodes.
essential power generator driver
A driver for an essential power generator.
event recorder
A recording instrument that records the presence or absence of a quantity, or the state of a two-state device, as a function of time
excess energy meter
A watt-hour meter intended to measure the excess energy when the power exceeds a pre-determined value
excitation winding
A winding for the production of a magnetic field which is stationary with respect to that winding
exciter
An electric generator that supplies all or part of the power to the field winding of an electrical machine
explosion proof apparatus
An hazardous area apparatus that has an explosion proof design, and which is approved by a certifying body.
expulsion fuse
A fuse in which operation is accomplished by expulsion of gases produced by the arc.
extended rating type current transformer
A current transformer having a rated continuous thermal current higher than rated primary current and for which accuracy requirements are prescribed at that current
external gas pressure cable
A pressure cable usually pipe-type in which the pressurizing fluid is a gas separated from the insulation by a diaphragm.
factory-built switchgear and controlgear
A switchgear and controlgear that is an assembly built and assembled under the responsibility of the manufacturer and conforming to an established type or system, without deviations likely to influence the performance significantly from that of the of the typical assembly verified to be in accordance with the relevant standard.
female contact
A connector contact intended to make electric engagement on its inner surface for mating with the outer surface of another contact member.
fibre optic transceiver
A transceiver, in which fibre optic is used for transmission or reception
field winding
An excitation winding contributing to the creation of the principal magnetic field of a machine
field-effect transistor
A unipolar transistor in which the majority carriers flow along a channel whose effective resistance is controlled by a transverse electric field produced by a reverse bias applied to a gate region surrounding the channel, the gate and the channel being of opposite conductivity types.
filter contact
A connector contact with filter to discriminate against certain frequencies.
fire resistant cable
An electric cable that is resistant to fire
fireproof connector
An electrical connector capable of withstanding fire up to a specified temperature for a specified time.
fixed connector
An electrical connector for attachment to a rigid surface.
fixed resistor
A resistor which has a fixed resistance at a given temperature independent of voltage or current
fixed trip mechanical switching device
A mechanical switching device that cannot be released except when it is in the closed position.
flame retardant cable
An electric cable that resists the spread of fire
flat battery cell
An electric battery cell with flat, stratified electrode geometry
flat multicore cable
A multicore cable having cores or groups of cores arranged in parallel flat formation.
flexible busbar
A busbar for substations made up of flexible conductors.
flexible cable
An electric cable that is required to be capable of being flexed while in service and of which the structure and materials are such as to fulfil this requirement.
flexible conductor
A stranded conductor having wires of diameters small enough and so assembled that the conductor is suitable for use in a flexible cable.
float mounting connector
A fixed connector with mounting means permitting movement to facilitate alignment with the mating connector.
floodlight
A projector providing a beam of intense illumination.
fluorescent lamp
A discharge lamp in which light is produced largely by fluorescence.
fluorescent tube fixture
A luminaire utilizing fluorescent tube(s) as the light source, and which normally has a built-in starter circuit.
flux meter
A detecting instrument for measuring changes in magnetic flux.
foot switch
A manual control switch having an actuator intended to be operated by foot.
forced cooled transformer
A power transformer where either the primary or secondary cooling circuit is force cooled.
four-quadrant converter
An electric converter with two directions of d.c. power flow, associated with two directions of direct voltage and two directions of direct current.
four-switch mesh substation
A mesh substation having a busbar of square configuration with a switch or a circuit-breaker within each side.
four-switch mesh substation with mesh opening disconnectors
A mesh substation, the busbar of which comprises both circuit-breakers and disconnectors.
fractional horsepower motor
An electric motor having a continuous rating not exceeding 1 h.p. per 1 000 rev/min
fractional slot winding
A distributed winding in which the number of slots per pole and per phase is a fraction
frame surface cooled machine
A closed machine in which the frame surface is cooled by the surrounding medium
free connector
An electrical connector for attachment to the free end of a wire or cable.
free coupler connector
An electrical connector that mates with a free connector in a cable-to-cable application
frequency converter substation
A substation in which an ac current at a given frequency is converted into an ac current at another frequency.
frequency meter
A detecting instrument intended to measure the frequency of a periodic quantity
frequency transmitter
A transmitter of which the output is proportional to a measured frequency
frequency-multiplication diode
A semiconductor diode designed for multiplying the frequency of a signal
frog-leg winding
A two layer winding consisting of one lap winding and one wave winding, placed in the same slots and connected to the same commutator
fuel cell
A primary cell that consumes fuel continuously and converts its chemical energy directly into electrical energy.
fully insulated current transformer
A current transformer having as an integral part of its construction, insulation suitable for its rated insulation level
fuse
A physical object that by the fusing of one or more of its specially designed and proportioned components, opens the circuit in which it is inserted by breaking the current when this exceeds a given value for a sufficient time.
fuse-base
A physical object that is the fixed part of a fuse provided with contacts and terminals.
fuse-base contact
An electrical contact that is the contact piece of a fuse-base, designed to engage with a corresponding part of the fuse.
fuse-carrier
A physical object that is the movable part of a fuse designed to carry a fuse-link.
fuse-carrier contact
An electrical contact that is the contact piece of a fuse-carrier, designed to engage with a corresponding part of the fuse.
fuse-combination unit
A mechanical switching device and one or more fuses in a composite unit, assembled by the manufacturer or in accordance with his instructions.
fuse-disconnector
A disconnector in which a fuse-link or a fuse-carrier with fuse-link forms the moving contact.
fuse-element
A physical object that is a part of the fuse-link designed to melt under the action of current exceeding some definite value for a definite period of time.
fuse-holder
A physical object that is the combination of a fuse-base with its fuse-carrier.
fuse-link
A physical object that is the part of a fuse ( including the fuse-element(s)) intended to be replaced after the fuse has operated.
fuse-link contact
An electrical contact that is the contact piece of a fuse-link, designed to engage with a corresponding part of the fuse.
fuse-switch
A switch in which a fuse-link or a fuse-carrier with fuse-link forms the moving contact.
fuse-switch-disconnector
A switch-disconnector in which a fuse-link or a fuse-carrier with fuse-link forms the moving contact.
galvanometer
A detecting instrument for detecting the existence and determining the direction and intensity of a galvanic current (direct current)
gas evolving switch
A mechanical switching device in which the gas is evolved and moved by the thermal action of the arc
gas group certified apparatus
An hazardous area apparatus designed and approved by a certifying body to operate within a defined gas group environment.
gas insulated line
An electric line whose conductors are contained in an enclosure and insulated with a compressed gas.
gas insulated metal-enclosed substation
A substation that is made up with only gas insulated metal enclosed switchgear.
gas turbine set
A thermal generating set in which the prime mover consists of a gas turbine.
gas-blast circuit-breaker
A circuit-breaker in which the arc develops in a blast of gas.
gas-filled lamp
An incandescent lamp in which the luminous element operates in a bulb filled with an inert gas.
gas-filled tube
An electronic tube in which the electric characteristics are substantially established by the ionization of deliberately introduced vapour or gas
gas-insulated metal-enclosed switchgear and controlgear
A metal-enclosed switchgear in which the insulation is obtained, at least partly, by an insulating gas other than air at atmospheric pressure.
gastight sealed battery cell
An electric battery cell that remains closed and does not release either gas or liquid when operated within the limits of charge and temperature specified by the manufacturer
general purpose motor
An electric motor designed, listed and offered in standard ratings with operating characteristics and mechanical construction suitable for use under usual service conditions without restrictions to a particular application or type of application.
generating set
A physical object that is an assembly of rotating machines transforming mechanical or thermal energy into electricity.
generator driver
A driver for a generator.
geothermal power station
A thermal power station in which thermal energy is extracted from suitable parts of the Earth's crust.
glass fuse
A fuse that has a housing made of glass
grading screen
An electric screen that is a component of conductive material intended to provide voltage grading.
grommet
A support intended to support and protect the wires or cable at the point of entry.
grommet follower
A physical object intended to compress the grommet and/or to reduce the transmission of torque to the grommet.
grommet nut
A nut used to retain a grommet or grommet and follower.
halogen free type junction box
A junction box made of a solid material which does not liberate halogen gases if heated by fire.
hand-held electric drill
A physical object that is a drilling machine intended to be held in one's hand during operation, and that has an electric power supply.
hand-lamp
A lamp that is or may be carried in the hand.
hardness detector
A detector intended to detect a preset hardness
hazardous area apparatus
A physical object that is certified to operate in a hazardous gas or dust environment.
heating cable
An electric cable, that is also an electric heater, with or without a shield or a metallic sheath, intended to give off heat for heating purposes
hermaphroditic connector
An electrical connector that mates with an identical connector.
hermetic connector
An electrical connector having a hermetic seal.
hermetically sealed battery cell
A gastight sealed battery cell without pressure release device
high intensity discharge lamp
An electric discharge lamp in which the light-producing arc is stabilized by wall temperature and the arc has a bulb wall loading in excess of 3 watts per square centimetre
high pressure mercury lamp
A high intensity discharge lamp in which the major portion of the light is produced, directly or indirectly, by radiation from mercury operating at a partial pressure in excess of 100 kilopascals.
high pressure sodium lamp
A high intensity discharge lamp in which the light is produced mainly by radiation from sodium vapour operating at a partial pressure of the order of 10 kilopascals.
high voltage switchboard data sheet
A data sheet for a high voltage switchboard.
high-pass filter
An electrical filter having a single pass-band extending from a specified cut-off frequency upwards
hollow conductor
A cable conductor so constructed as to provide a central channel.
hollow insulator
An electrical insulator that is open from end to end, with or without sheds.
hot cathode lamp
A discharge lamp in which the light is produced by the positive column of an arc discharge
hrc fuse
A fuse that during its operation limits the circuit current to a value much lower than the peak value of the prospective current
humidity transmitter
A transmitter of which the output is proportional to an absolute humidity
hydraulic starter
A starter in which the force for closing the main contacts is provided exclusively by hydraulic energy.
hydraulic switch
A control switch intended to switch one or more pneumatic signals.
hydroelectric power station
A power station in which the gravitational energy of water is converted into electricity.
hydroelectric set
A generating set consisting of a hydraulic turbine mechanically connected to an electrical generator
hysteresis coupling
An electric coupling in which torque is transmitted by forces arising from the resistance to reorientation of established magnetic fields within a ferromagnetic material.
hysteresis motor
A synchronous motor with a smooth cylindrically shaped member, of magnetic material without a field winding, which starts by virtue of hysteresis losses induced in that member and operates at synchronous speed due to the retentivity of that member.
ignition cable
An electric cable designed for electric ignition systems
illuminated button
A button of a push-button switch that is associated with a lamp or lamps that can give a visual indication by illumination.
impregnated paper insulation
A lapped insulation consisting of paper impregnated with an insulating material.
incandescent lamp
A lamp in which electric light is produced by incandescence of a filament or strip of carbon.
independent-time measuring relay
A specified-time relay that is also a measuring relay the specified time of which can be considered as being independent, within specified limits, of the value of the characteristic quantity.
indicating fuse
A fuse provided with an indicator.
indicator lamp
A lamp that is a luminous signal indicating operating conditions.
indirect ac converter
An electronic ac converter with a dc link.
indirect acting instrument
An indicating instrument in which the indicating or recording device is driven by a motor or other device, as a function of the value of the measurand
indirect cooled winding
A winding that is not directly cooled
indirect dc converter
An electronic dc converter with an ac link.
indirect over-current release
An over-current release energized by the current in the main circuit of a mechanical switching device through a current transformer or a shunt.
individual screen
A cable screen that is a screen for each group of conductors in a cable. (single, pair, triples ..)
individually screened cable
An electric cable in which each core is covered with an individual screen.
indoor bushing
An electrical bushing both ends of which are intended to be in ambient air at atmospheric pressure but not exposed to outdoor atmospheric conditions.
indoor post insulator
A post insulator not intended to be exposed to outdoor atmospheric conditions.
indoor substation
A substation sheltered from external weather conditions by being installed within a building.
indoor switchgear and controlgear
A switchgear and controlgear designed solely for installation within a building or other housing, where the switchgear and controlgear is protected against wind, rain, snow, abnormal dirt deposits, abnormal condensation, ice and hoar frost.
indoor-immersed bushing
An electrical bushing one end of which is intended to be in ambient air but not exposed to outdoor atmospheric conditions and the other end to be immersed in an insulating medium other than ambient air (e.g. oil or gas).
induction coupling
An electric coupling in which torque is transmitted by the interaction of the magnetic field produced by magnetic poles on one rotating member and the induced currents in the other rotating member.
induction frequency converter
A wound-rotor induction motor in which the frequency conversion is obtained by induction between a primary winding and a secondary winding rotating with respect to each other, the secondary winding delivering power at a frequency proportional to the relative speed of the primary magnetic field and the member carrying the secondary winding.
induction generator
An alternating current generator that is an induction motor driven at a greater speed than its synchronous speed, so that it acts as a generator.
induction machine
An asynchronous machine of which only one winding is energized.
induction meter
A watt-hour meter that operates by the rotation of the disc of an induction measuring element
induction motor
An electric motor in which the torque or force is due to the interaction between a moving magnetic field produced by stationary primary windings and currents induced by this field in moving secondary conductors.
inductor
A physical object that induces an e.m.f. or current in another part.
inductor frequency converter
A rotating frequency converter having a stationary input alternating current winding which supplies the excitation, and a stationary output winding of a different number of poles in which the generated voltage at the output frequency is induced through change in field reluctance by a number of regular projections of the rotor.
inductor generator
An electric generator in which both armature and field windings are stationary, the current being produced by the periodic variation in the magnetic flux through the armature windings as successive teeth of a rotating inductor pass by
inductor machine
A synchronous machine in which one member, usually stationary, carries main and exciting windings effectively disposed relative to each other, and in which the other member, usually rotating, is without windings but carries a number of regular projections. Permanent magnets may be used instead of the exciting winding.
inductor type synchronous motor
An inductor machine running as a motor, the torque being produced by forces between the stationary poles and salient rotor teeth.
infinite bus
An electrical node whose voltage is predetermined and remains constant in magnitude, phase and frequency under all loading conditions.
infrared lamp
A lamp that radiates especially strongly in the infrared, the visible radiation produced, if any, not being of direct interest.
ingress protected apparatus
A physical object that is conforming to IEC Publication 529, Ingress Protection.
inner covering
A cable layer that is a non-metallic covering which surrounds the assembly of the cores (and fillers if any) of a multiconductor cable and over which the protective covering is applied.
instantaneous contactor relay
A contactor relay operating without any intentional time delay.
instantaneous release
A release of a mechanical switching device that operates without any intentional time-delay.
instrument autotransformer
An instrument transformer in which the primary and the secondary windings have a common part.
instrument lead
A physical object comprising one or more conductors, specially designed for interconnecting measuring instruments and accessories.
instrument transformer
A transformer intended to transmit an information signal to measuring instruments, meters and protective or control devices.
insulated cable
An electric cable with an assembly consisting of: one or more cores, their individual covering(s) (if any), assembly protection (if any), protective covering(s) (if any). Additional uninsulated conductor(s) may be included in the cable.
insulated-gate field-effect transistor
A field-effect transistor having one or more gate electrodes which are electrically insulated from the channel
insulation fault detecting instrument
A detector intended to detect faults in electrical insulation
insulation resistance meter
An ohmmeter intended to measure insulation resistance
insulation screen
A cable screen of non-metallic and/or metallic material covering the insulation.
insulation-enclosed switchgear and controlgear
An enclosed switchgear and controlgear with an external insulation enclosure and complete except for external connections.
insulator set
An electrical insulator that is an assembly of one or more insulator strings suitably connected together, complete with fixing and protective devices as required in service.
insulator string
An electrical insulator with two or more string insulator units coupled together and intended to give flexible support to overhead line conductors and stressed mainly in tension.
integral slot winding
A distributed winding in which the number of slots per pole and per phase is an integer, and is the same for all poles
integrally fused circuit-breaker
A circuit-breaker that is a combination, in a single device, of a circuit-breaker and fuses, one fuse being placed in series with each pole of the circuit-breaker intended to be connected to a phase conductor
integrated circuit
A physical object that is made as a single indivisible structure (such as a chip) and is electrically equivalent to a conventional circuit of many separate components.
integrating ammeter
An integrating meter that is measuring the time integral of ampere.
integrating va meter
An integrating meter that is measuring the time integral of volt-ampere.
integrating volt meter
An integrating meter that is measuring the time integral of voltage.
interlocking device
A physical object that makes the operation of a piece of equipment dependent upon the condition, position or operation of one or more other pieces of equipment.
internal combustion set
A thermal generating set in which the prime mover consists of an internal combustion engine.
internal gas pressure cable
A pressure cable in which the pressurizing fluid is a gas in contact with the insulation.
inverse time-delay over-current release
An over-current release that operates after a time-delay inversely dependent upon the value of the over-current.
isolation transformer
A power transformer designed to provide electrical isolation without stepping voltage and current either up or down.
isolator
A physical object that isolates.
jack
An electrical connector to mate with a telephone plug
jumper board
A physical object consisting of terminals and connecting devices so arranged that they can be cross-connected in any desired manner.
junction box
A physical object that is a closed, rigid box or casing used to enclose and protect the junctions of electric wires or cables.
junction-gate field-effect transistor
A field-effect transistor having one or more gate regions which form PAN junctions with the channel
key switch
A manual control switch that may only be actuated by means of a special type of key.
kiosk substation
A substation that is compact, often prefabricated and used only for distribution purposes.
korndorfer starter
An auto-transformer starter that involves no interruption of the supply of power after the starting cycle has been initiated.
label plate
A physical object intended to be attached to an artefact for the purpose of identification
laminated core
A magnetic core made of sheets of magnetically soft material which are stacked in parallel configuration and which are insulated against each other.
lamp
A physical object intended to produce an optical radiation, usually visible.
lantern lamp
A lamp specially made for warning and information in the sea and air traffic.
lanyard disconnect connector
A quick-disconnect connector designed to separate when a specified force is applied to the coupling device through a lanyard without damage to the connector
lap winding
A winding in which the two ends of each coil are connected to adjacent commutator segments, so that each coil overlaps the next.
lapped insulation
A conductor insulation consisting of tapes applied helically in concentric layers.
latched contactor
A contactor, the moving elements of which are prevented by means of a latching arrangement from returning to the position of rest when the operating means are de-energized.
lead sheath
A cable sheath made of lead
lead sheathed cable
An electric cable that has a lead sheath
lead-acid battery
A secondary battery with an aqueous electrolyte based on dilute sulphuric acid, a positive electrode of lead dioxide and a negative electrode of lead.
leclanche battery
A primary battery with a saline electrolyte based on ammonium chloride and zinc chloride, a positive electrode containing manganese dioxide and a negative electrode of zinc.
light bulb
A physical object that is the glass bulb-shaped container of the incandescent filament used for producing electric light.
light fixture bracket
A bracket intended to hold light fixtures.
limit switch
A position switch having a positive opening operation.
line-post insulator
A rigid insulator consisting of one or more components of insulating material permanently assembled with a metal base and intended to be mounted rigidly on a supporting structure.
liquid immersed transformer with conservator
An oil-immersed type transformer that has a liquid conservator.
lithium carbon monofluoride battery
A non-aqueous lithium battery with a positive electrode containing carbon monofluoride and a negative electrode of lithium
lithium copper oxide battery
A non-aqueous lithium battery with a positive electrode containing copper oxide and a negative electrode of lithium
lithium manganese dioxide battery
A non-aqueous lithium battery with a positive electrode containing manganese dioxide and a negative electrode of lithium
lithium thionyl chloride battery
A non-aqueous lithium battery with a non-aqueous inorganic electrolyte, a positive electrode containing thionyl chloride and a negative electrode of lithium
live tank circuit-breaker
A circuit-breaker with interrupters in a tank insulated from earth.
load bus
An electrical node with predetermined active and reactive input power.
locking push-button
A push-button that stays depressed until released with a key
long rod insulator
An electrical insulator comprising an insulating part having an approximately cylindrical core, with or without sheds, and external or internal fixing devices attached to each end.
long-arc lamp
An arc lamp, generally of very high pressure, in which the distance between the electrodes is large, the arc filling the discharge tube and being therefore stabilized.
low pressure mercury lamp
A discharge lamp of the mercury vapour type, with or without a coating of phosphors, in which during operation the partial pressure of the vapour does not exceed 100 pascals.
low pressure sodium lamp
A discharge lamp in which the light is produced by radiation from sodium vapour operating at a partial pressure of 0.1 to 1.5 Pascal.
low voltage switchboard data sheet
A data sheet for a low voltage switchboard.
low-pass filter
An electrical filter having a single pass-band extending from zero frequency to a specified cut-off frequency
luminaire
A physical object that is an electric light and its fittings.
luminaire for surface mounting
A luminaire intended to be mounted onto a surface.
machine
A physical object made to perform a working task or achieve a function.
magnet
A physical object intended to have an external magnetic field.
magnet keeper
A physical object that is a high-permeance piece of magnetic material placed across the poles a permanent magnet to protect it from unintentional demagnetization or to reduce its external field
magnetic core
A physical object that is the bar or cylinder of soft iron forming the central part of an electro-magnet, or of an induction-coil.
magnetic coupling
An induction coupling in which the secondary currents are induced in wound or cage windings.
magnetic overload release
An overload release depending for its operation on the force exerted by the current in the main circuit exciting the coil of an electromagnet.
magnetic particle coupling
An electric coupling that transmits torque through the medium of particles of a magnetic material which conglomerate in a magnetic field between coupling members.
magnetic screen
An electric screen of ferromagnetic or ferrimagnetic material intended to reduce the penetration of a magnetic field into a given region.
magnetic shunt
A physical object that is a device of high-permeability material which is placed in parallel with part of a magnetic circuit to divert flux from that part
magneto-hydro-dynamic thermal power station
A thermal power station generating electricity by means of an electromagnetic field acting on a plasma stream.
main contact
A switch contact included in the main circuit of a mechanical switching device, intended to carry, in the closed position, the current of the main circuit.
main power generator driver
A driver for a main power generator.
main power system
An electrical power system intended to produce, distribute and/or maintain the main electrical power supply.
main switchboard
A switchboard intended to be used as a main switchboard.
main terminal box
A terminal box where main power cables are connected.
maintenance-free battery
An electric battery that, during its service life, requires no maintenance provided specified operating conditions are fulfilled
make contact
A switch contact which is closed when the main contacts of the mechanical switching device are closed and open when they are open.
male contact
A connector contact intended to make electrical engagement on its outer surface, and which will enter a female contact
manganese dioxide-magnesium battery
A primary battery with a positive electrode containing manganese dioxide as active material, a negative electrode of magnesium and a salt solution as electrolyte
manned substation
A substation that is locally operated by personnel working within the substation.
manual control switch
A control switch that is operated by a person
manual reset switch
A pilot switch of which the resetting is manually operated
manual starter
A starter in which the force for closing the main contacts is provided exclusively by manual energy.
mass-impregnated non-draining insulation
A mass-impregnated paper insulation in which the impregnant is not fluid at the maximum continuous operating temperature.
mass-impregnated paper insulation
An impregnated paper insulation in which the paper tapes are impregnated after lapping
master substation
A manned substation from which remotely controlled substations are controlled.
matching transformer
A power transformer designed for insertion between two circuits having different impedances to optimize the power of the signal transferred.
measuring bridge
A process instrument consisting of at least four branches (arms) or groups of circuit elements (resistors, inductors, capacitors, etc.) connected in a quadrilateral, one of whose diagonals is supplied by a source and the other connected to a null detector or a measuring instrument.
measuring instrument with circuit control devices
A detecting instrument that provides electric control signals at predetermined values of the measurand.
measuring relay
An electrical relay intended to operate when its characteristic quantity, under specified accuracy, attains its operate value.
measuring spark gap
A voltmeter intended to measure peak voltage as a function of the flashover distance between its two electrodes, generally spheres.
mechanical switching device
A switching device designed to close and open one or more electric circuits by means of separable contacts.
mercuric oxide-zinc battery
An alkaline primary battery with a positive electrode containing mercuric oxide as active material and a negative electrode of zinc
mercury motor meter
A watt-hour meter or a coulometer having a disk immersed in mercury and rotating in the field produced by an electromagnet or a permanent magnet
mesh impedance matrix
A matrix that expresses the dependence of the mesh voltages on the mesh currents.
mesh substation
A single busbar substation in which the busbar is formed as a closed loop with circuit breakers in series within the loop.
metal filament lamp
An incandescent lamp whose luminous element is filament of metal.
metal halide lamp
A high intensity discharge lamp in which the major portion of the light is produced from a mixture of a metallic vapour and the products of the dissociation of halides.
metal-clad conductor
A cable conductor in which each wire consists of an inner part of one metal and a metallurgically bonded outer shell of another metal.
metal-coated conductor
A cable conductor in which each individual wire is covered with a thin layer of a different metal or metal alloy.
metal-enclosed switchgear and controlgear
An enclosed switchgear and controlgear with an external metal enclosure intended to be earthed, and complete except for external connections.
metal-oxide-semiconductor field-effect transistor
An insulated-gate field-effect transistor in which the insulating layer between each gate electrode and the channel is oxide material
meter with maximum demand indicator
A watt-hour meter fitted with a means to indicate the highest average value of the power during successive time intervals of equal duration
metering compartment
A switchgear and controlgear compartment that contains metering devices.
micro jack
A jack that is a micro plug
milliken conductor
A stranded conductor comprising an assembly of shaped stranded conductors, lightly insulated from each other.
mineral insulation
A conductor insulation consisting of compressed mineral powder.
miniature circuit-breaker
An air circuit-breaker intended for low power low voltage installations.
mixed phase layout substation
A substation that has a layout in which the busbars are arranged as a separated phase layout but the bay circuits are arranged as associated phase layout.
mixer diode
A semiconductor diode designed for frequency conversion of signals by means of a local oscillator
mobile telephone
A telephone that is hand-held providing access to a cellular radio network.
molten salt battery
A primary battery with an electrolyte consisting of one or more anhydrous molten salts.
momentary push-button
A push-button that provides contact only when pressed
monobloc battery
A secondary battery in which multiple separate but electrically connected cell compartments each of which is designed to house an assembly of electrodes, electrolyte, terminals or interconnections and possible separators.
monostable relay
An electrical relay that, having responded to an input energizing quantity (or characteristic quantity) and having changed its condition, returns to its previous condition when the quantity is removed.
motor control centre
A switchgear and controlgear that houses motor starters to control electric motors
motor controller
A mechanical controller that serves to govern in some predetermined manner the performance of an electric motor.
motor enclosure
An enclosure that is an enclosure that is the housing of a motor.
motor set
A physical object that is a group of rotating machines transforming electricity into mechanical energy.
motor start system
A physical object that is a combination of all the switching means necessary to start and stop a motor in combination with suitable overload protection.
motor starter compartment
A switchgear and controlgear compartment that contains a motor starter.
moulded-case circuit-breaker
An air circuit-breaker having a supporting housing of moulded insulating material forming an integral part of the circuit-breaker.
moving-coil galvanometer
A galvanometer in which a coil carrying a current moves in the field of a permanent magnet
mud resistant cable
An electric cable that is resistant to mud
multi constant speed motor
A multi speed motor whose two or more definite speeds are inherently constant or substantially constant over its normal ranges of load.
multi varying speed motor
A multi-speed motor whose two or more definite speeds will inherently vary appreciably over its normal ranges of load.
multi-cell switch
A switch that is a frame assembly containing two or more basic cells, each of which may have any mechanical systems.
multi-core type current transformer
A current transformer comprising a number of magnetically separated cores with individual secondary windings and a common primary winding
multi-element insulator
An electrical insulator that has an insulating body consisting of two or more disc or bell-shaped insulating elements permanently assembled together and to the fixing device(s).
multi-function meter
A detecting instrument having a single indicating device, intended to measure more than one kind of quantity
multi-range instrument
A detecting instrument having more than one measuring range
multi-rate meter
A watt-hour meter provided with a number of registers, each becoming operative at specified time intervals corresponding to different tariffs
multi-scale instrument
A detecting instrument having more than one scale
multi-speed motor
An electric motor that can be operated at any of two or more definite speeds at a given load.
multiconductor cable
An electric cable having more than one conductor, some of which may be uninsulated.
multicore cable
An electric cable consisting of more than one core.
multiple-shot reclosing
An automatic reclosing repeated two or three times (usually not more) if it is unsuccessful
multiple-stranded conductor
A stranded conductor consisting of a number of groups of wires assembled together in one or more helical layers, the wires in each group being either bunched or stranded.
multiplex lap winding
A lap winding in which the number of parallel circuits is equal to a multiple greater than two of the number of poles
multiplex wave winding
A wave winding in which the number of parallel circuits is a multiple of two, other than four, whatever the number of poles
n-step starter
A starter in which there are (n-1) intermediate accelerating positions between the off and full on positions.
natural cooled transformer
A power transformer where both primary and secondary cooling circuits have natural circulation.
negative-glow lamp
A discharge lamp in which the light is produced directly or indirectly (by fluorescence) from the radiation of the negative glow, in the region in front of the cathode.
network topology system
An electrical network system where the relative positions of the ideal elements are representing an electrical network.
neutral electric cable
An electric cable intended to be a part of a neutral system
neutral resistor
A resistor that is used between earth and the neutral point in a transformer or generator.
neutral resistor rating 100 a
A neutral resistor that is used between earth and the neutral point in a transformer or generator with the size 100 ampere when the voltage is 690 volts between phases.
neutral-electrolyte air-zinc battery
An air-metal battery with a saline electrolyte and a negative electrode of zinc.
nickel-cadmium battery
An alkaline secondary battery with an alkaline electrolyte, a positive electrode containing nickel oxide and a negative electrode of cadmium.
nickel-iron battery
An alkaline secondary battery with an alkaline electrolyte, a positive electrode containing nickel oxide and a negative electrode of iron.
nickel-zinc battery
An alkaline secondary battery with an alkaline electrolyte, a positive electrode containing nickel oxide and a negative electrode of zinc.
non-adjustable thermostatic switch
A thermostatic switch whose operating temperature is determined by a permanent setting carried out by the manufacturer
non-aqueous battery
A primary battery having an electrolyte made from a non-aqueous liquid solvent
non-aqueous lithium battery
A non-aqueous battery with a negative electrode of lithium or containing lithium
non-encapsulated-winding dry-type transformer
A dry-type transformer having none of the windings encapsulated with solid insulation
non-linear variable resistor
A variable resistor in which the resistance varies in a non-linear manner
non-polarized relay
A direct current relay, the change of condition of which does not depend upon the polarity of its input energizing quantity(ies).
non-programmable protection relay
A protection relay that is not programmable and is designed to inherently perform a certain protection function.
non-shorting contact
A switch contact designed such that one contact is completely open before the next contact is made
non-specified-time relay
An electrical relay for which the times are not subject to any accuracy specification
nuclear power station
A thermal power station in which the thermal energy is obtained by a nuclear reaction.
ocean or sea temperature gradient power station
A thermal power station producing electricity by means of the difference between the temperatures at the surface of the ocean/sea and that at a lower depth.
off load tap changer
A tap changer for changing the tapping connections of a winding, suitable for operation while the transformer is off load.
off-line ups
A UPS unit supplying the load via a bypass circuit having a fast-acting static switch to switch to the battery/inverter in the event of mains failure
ohmmeter
A detecting instrument for measuring electrical resistance in ohms.
oil circuit-breaker
A circuit-breaker in which the contacts open and close in oil.
oil resistant cable
An electric cable that is resistant to oil
oil-filled cable
A self-contained pressure cable in which the pressurizing fluid is the insulating oil and which is designed to facilitate the free movement of the oil within the cable.
oil-filled pipe-type cable
A pipe-type cable in which the pressurizing fluid is the insulating oil.
oil-immersed type transformer
A power transformer of which the magnetic circuit and windings are immersed in oil.
on load tap changer
A tap changer for changing the tapping connections of a winding, suitable for operation while the transformer is energized or on load.
on-line ups
A UPS unit supplying the load through a charger/inverter during normal operation
one-and-a-half breaker arrangement
A double busbar substation where, for two circuits, three circuit-breakers are connected in series between the two busbars, the circuits being connected on each side of the central circuit-breaker.
one-quadrant converter
An electric converter with one possible direction of dc power flow.
open machine
An electric rotating machine with an open cooling circuit in which the coolant is drawn directly from the surrounding medium passing through the machine and then returning directly to the surrounding medium
open-type substation
A substation in which the insulation to earth and between phase conductors is mainly provided by air at atmospheric pressure and in which some live parts are not enclosed.
optical fibre
A physical object which is a filament-shaped waveguide made of dielectric for guiding optical waves
optical fibre cable
A physical object that is an assembly comprising one or more optical fibres or fibre bundles inside a common covering designed to protect them against mechanical stresses and other environmental influences while retaining the transmission quality of the fibres.
oscilloscope
A process instrument in which a moving spot on the screen of a cathode-ray tube represents by its position the relationship between two variables.
outdoor bushing
An electrical bushing both ends of which are intended to be in ambient air at atmospheric pressure and exposed to outdoor atmospheric conditions.
outdoor post insulator
A post insulator intended to be exposed to outdoor atmospheric conditions.
outdoor substation
A substation that is designed and installed to withstand external weather conditions.
outdoor switchgear and controlgear
A switchgear and controlgear suitable for installation in the open air, i.e. capable of withstanding wind, rain, snow, dirt deposits, condensation, ice and hoar frost.
outdoor-immersed bushing
An electrical bushing one end of which is intended to be in ambient air and exposed to outdoor atmospheric conditions and the other end to be immersed in an insulating medium other than ambient air (e.g. oil or gas)
outdoor-indoor bushing
An electrical bushing both ends of which are intended to be in ambient air at atmospheric pressure.
over-current release
A release of a mechanical switching device that permits a mechanical switching device to open with or without time-delay when the current in the release exceeds a predetermined value.
overhead cable
An electric cable intended to be installed overhead
overload release
An over-current release intended for protection against overloads.
oversheath
A cable sheath that is a non-metallic sheath applied over a metallic covering, constituting the outermost sheath of the cable.
oxygen-hydrogen fuel cell
A fuel cell in which the active materials are oxygen and hydrogen
pair cable
An electric cable in which the cores are arranged in pairs twisted together
parallel connected battery bank
An electric battery bank in which all the positive battery terminals are connected together and all the negative battery terminals are connected together
parallel-series connected battery bank
An electric battery bank in which parallel connected groups of batteries are connected in series
passing contact
An electrical contact designed for opening or closing in a passing fashion the corresponding contact circuit when the relay changes over.
passive bus
An electrical node with zero input active and reactive power.
peak voltmeter
A voltmeter that measures the peak value of an alternating voltage.
pedestal post insulator
A post insulator having two metal parts, a "cap" partly embracing an insulating component and a "pedestal" cemented into a recess in the insulating component.
pendant luminaire
A luminaire provided with a cord, chain, tube, etc., which permits it to be suspend from a ceiling or a wall support.
penetration seal
A seal designed for sealing a hole in a wall through which a cable passes.
permanent magnet
A magnet whose property continues after the magnetizing current has ceased to pass through it.
permanent magnet machine
An electric rotating machine in which the field system consists of one or more permanent magnets
permanently manned substation
A manned substation that is continuously controlled by personnel who are stationed at the substation.
permeameter
A detecting instrument for measuring the magnetic permeability of a substance or object.
ph transmitter
A transmitter of which the output is proportional to a measured pH
phase advancer
An electric machine that supplies reactive power to the secondary of a wound rotor induction motor to improve the power factor of the latter.
phase converter
An electric converter that changes the number of phases associated with electric energy.
phase meter
A detecting instrument that measures the phase difference between two oscillations having the same frequency, especially that between an alternating current and the corresponding voltage (hence giving the power factor).
phase shifter
An electric converter that introduces a change in the phase of an oscillation.
photodiode
A semiconductor diode that generates a potential difference or changes its electrical resistance when illuminated.
photoelectric device
A physical object the essential electric characteristics of which are due to the absorption of photons
phototransistor
A transistor that responds to incident light by generating and amplifying an electric current.
pickup coil
An electromagnetic coil designed to produce a voltage pulse.
pilot switch
A control switch actuated in response to specified conditions of an actuating quantity.
pin insulator
A rigid insulator consisting of an insulating component intended to be mounted rigidly on a supporting structure by means of a pin passing up inside the insulating component which consists of one or more pieces of insulating material permanently connected together.
pipe-type cable
A pressure cable in which the cores are drawn into a pipe, usually of steel and already installed, and which in service contains a fluid under pressure.
plain conductor
A cable conductor in which the wire or wires are not coated with an additional metal.
plant lighting system
An electrical system that includes lighting applications for a plant.
plug-in relay
A control relay that has plug-in terminals so that all connections can be made simultaneously by pushing the unit into a socket.
plug-in termination
A termination permitting the connection or the disconnection of the cable to other equipment, with or without voltage, generally in the absence of load current.
pneumatic switch
A control switch that is operated by air
polarized relay
A direct current relay, the change of condition of which depends upon the polarity of its input energizing quantity(ies)
pole amplitude modulating winding
A pole changing winding in which non-integral rations of pole numbers are achieved by suppressing or enhancing harmonics of the magnetic field
pole change winding motor
An electric motor having 2 sets of stator windings, allowing the motor speed to be varied by use of one or the other of these sets of windings
pole changing winding
A winding in which two or more groups of connected coils are connected to terminals in such a manner that the number of poles of the winding can be changed by altering the interconnection of those terminals
pole of a magnet
A feature that is one of the parts of a magnet away from or towards which the useful magnetic flux density is directed.
pole of a switching device
A physical object that is the portion of a switching device associated exclusively with one electrically separated conducting path of its main circuit and excluding those portions which provide a means for mounting and operating all poles together.
pole shoe
A physical object that is a detachable extension of a pole-piece.
pole-mounted substation
An outdoor substation that is a distribution substation, mounted on one or more poles.
polyphase commutator motor
An electric motor with a polyphase armature winding fed through a commutator.
polyphase machine
An electric rotating machine for the generation or utilization of polyphase alternating voltage and current.
pondage power station
A hydroelectric power station in which the filling period of the reservoir based on the cumulative water flows permits the storage of water over a period of a few weeks at the most.
portable instrument
A detecting instrument designed to be easily carried by hand and to be disconnected by the user
portable luminaire
A luminaire that can easily be moved from one place to another even while connected to the electric supply
portable transformer
A power transformer that is portable and used for low voltage power tools
position switch
A pilot switch the actuating system of which is operated by a moving part of a machine, when this part reaches a predetermined position.
post insulator
An electrical insulator intended to give rigid support to a live part which is to be insulated from earth or from another live part.
post insulator unit
A physical object that is a constituent part of a post insulator consisting of a permanent assembly of one or more insulating parts complete with fixing devices designed to facilitate attachment to it.
potentiometer
A variable resistor with one or more intermediate tappings allowing fractions of the voltage across the resistor to be obtained.
power cable
An electric cable intended for transmission of electric power.
power capacitor
A capacitor intended for use in a power network
power factor meter
A detecting instrument intended to measure the ratio of the active to the apparent power in an electrical circuit
power meter
A detecting instrument intended to measure electrical power in watt
power station
A physical object whose purpose is to generate electricity and which includes civil engineering works, energy conversion equipment and all the necessary ancillary equipment.
power supply unit
A physical object intended to supply electric power according to specified levels and tolerances
power transformer
A transformer that, by electromagnetic induction, transforms a system of alternating voltage and current into another system of voltage and current usually of different values and at the same frequency for the purpose of transmitting electrical power.
power transformer data sheet
A data sheet for a power transformers.
pre-impregnated paper insulation
An impregnated paper insulation in which the paper tapes are impregnated before lapping.
pre-insulated terminal end
A terminal end having a barrel with a permanent layer of insulation through which a crimp is made.
prefocus lamp
An incandescent lamp in which, during manufacture, the luminous element is accurately adjusted to a specified position with respect to locating devices that form part of the cap.
preheat lamp
A hot cathode lamp that requires preheating of the electrodes for starting.
prepayment meter
A watt-hour meter provided with a mechanism which, by insertion of suitable payment means (e.g. coin, token or credit card), connects a supply of electricity and then disconnects it after the consumption of a predetermined amount of energy or after a predetermined duration.
pressed glass lamp
A reflector lamp, the bulb of which consists of two glass parts fused together, namely a metallized reflecting bowl and a patterned cover forming an optical system.
pressure cable
An electric cable in which the insulation is maintained under pressure by means of a fluid.
pressurized machine
An electric rotating machine in which the internal coolant is kept at a higher pressure than the surrounding medium
primary battery
An electric battery that comprises one or more primary cells, including case, terminals and marking
primary cell
An electric battery cell that is not designed to be recharged.
primary relay
An electrical relay that is directly energized by the current or voltage in a main circuit, without an intermediate instrument transformer or shunt or transducer.
printed circuit board
A physical object consisting of electrical conductors printed on an insulating board and intended to carry electronic devices
programmable protection relay
A protection relay that may be electronically programmed to perform any number of protection algorithms
projector
A luminaire using reflection and/or refraction to increase the luminous intensity within a limited solid angle
protection compartment
A switchgear and controlgear compartment that contains protection devices.
protection relay
A measuring relay that, either solely or in combination with other relays, is a constituent of a protection equipment.
pull-off connector
An electrical connector equipped with a pull-off coupling
pulse generator
An electric generator that delivers electrical or acoustical energy in the form of a series of discrete pulses, usually of constant amplitude and duration, and occurring at a definite repetition frequency
pulse transformer
A transformer that is optimised for transmitting rectangular electrical pulses, i.e. pulses with fast rise and fall times and a constant rate.
pumped storage power station
A hydroelectric power station employing high level and low level reservoirs permitting repeated pumping and generating cycles to be carried out.
push-button
A manual control switch having an actuator intended to be operated by force exerted by a part of the human body, usually the finger or palm of the hand, and having stored energy (spring) return.
push-pull connector
An electrical connector having a push-pull coupling
quad cable
An electric cable that consists of a group of four insulated conductors twisted together, the conductors usually forming two circuits.
quadrant electrometer
An electrometer in which the moving element is actuated by electrostatic forces between that element and fixed elements in the form of quadrants
quick action contact
A switch contact the relative displacement of which is always rapid regardless of the speed of the actuating part
quick-disconnect connector
An electrical connector fitted with a coupling device which permits relatively rapid unmating.
rack-and-panel connector
An electrical connector that is one of two mating fixed connectors intended to provide a connection between a unit and its mounting rack.
radar
A physical object for detecting the presence of objects at a distance, or ascertaining their position or motion, by transmitting short radio waves and detecting or measuring their return after being reflected.
radiation resistant cable
An electric cable in which the insulation is resistant to degradation by ionising radiation
ratio-meter
A detecting instrument intended to measure the ratio or the quotient of the values of two quantities
reactive power meter
A power meter that is measuring the reactive electrical power (VAr).
reactor start split phase motor
A split phase motor in which the phase displacement results from additional inductive reactance in the main circuit, this additional reactance being short-circuited or otherwise made ineffective when the auxiliary circuit is opened.
recessed luminaire
A luminaire suitable to be fully or partly recessed into a mounting surface.
rectangular connector
An electrical connector that is basically rectangular and has a basically rectangular mating face
rectifier
An electric converter for converting an alternating current into a direct current.
rectifier instrument
A process instrument, usually of the permanent-magnet moving-coil type associated with a rectifying device, intended to measure alternating quantities.
reed contact
An electrical contact, the contact members of which are blades either fully or partly of magnetic material and which are moved directly by a magnetic force.
reference node
An electrical node that is the node of a network where the phase of the node voltage in the complex plane is arbitrarily fixed, and with reference to which the phases of the system state variables are measured.
reflector lamp
An incandescent or discharge lamp in which part of the bulb, of suitable shape, is coated with a reflecting material so as to control the light.
regulating transformer
A power transformer with a special winding divided into several sections enabling the voltage to be varied at will.
relative humidity transmitter
A transmitter of which the output is proportional to the difference in humidity between a wet bulb and a dry bulb
relay
A physical object that can be any electrical device, usually incorporating an electromagnet, whereby a current or signal in one circuit can open or close another circuit.
relay coil
An electromagnetic coil that operates a relay when energised
relay yoke
A yoke that is a fixed ferromagnetic part, usually not surrounded by a winding, whose principal purpose is to complete the main magnetic circuit.
release of a mechanical switching device
A physical object, mechanically connected to a mechanical switching device, that releases the holding means and permits the opening or the closing of the switching device.
reluctance motor
A synchronous motor with an unexcited rotor carrying a number of regular projections which may or may not have a cage winding for starting
remotely controlled substation
An unmanned substation that is controlled by means of telecontrol devices.
renewable fuse-link
A fuse-link that, after operation, may be restored for service by a refill-unit.
repeater
An amplifier, essentially including one or more amplifiers and/or regenerators and associated devices, inserted at a point in a transmission medium.
repulsion induction motor
A repulsion motor with an additional rotor cage winding.
repulsion motor
An induction motor, that is also a single-phase induction motor, in which the current is supplied to the stator only, the armature being short-circuited through the brushes and its current induced from the stator winding.
repulsion start induction motor
A repulsion motor in which the commutator bars are short-circuited or otherwise connected at an appropriate speed to give the equivalent of a cage winding.
reservoir power station
A hydroelectric power station in which the filling period of the reservoir based on the cumulative water flows is longer than several weeks.
residual current circuit-breaker
An earth leakage circuit-breaker in which the earth fault is detected by an imbalance in the current in the phase and neutral conductors
residual voltage winding
A transformer winding between the terminals of which is produced the residual voltage or one of the three component voltages which when added together constitute the residual voltage
resilient contact
A connector contact having elastic properties to provide a force to its mating part.
resistance start split phase motor
A split phase motor in which the auxiliary primary winding is connected in series with a resistor or provides itself the necessary resistance.
resistance transmitter
A transmitter intended to conduct measurements according to the principle of electric resistance
resistor
A physical object that impedes the flow of an electric current, used to develop a voltage drop across itself or to limit current flow.
reverse blocking diode thyristor
A thyristor having two terminals and which for negative anode voltage does not switch, but exhibits reverse blocking state.
reverse blocking triode thyristor
A thyristor having three terminals and which for negative anode voltage does not switch, but exhibits a reverse blocking state.
reverse conducting diode thyristor
A thyristor having two terminals and which for negative anode voltage does not switch and conducts large currents at voltages comparable in magnitude to the forward on-state voltage.
reverse conducting triode thyristor
A thyristor having three terminals and which for negative anode voltage does not switch and conducts large currents at voltages comparable in magnitude to the forward on-state voltage.
reverse current release
A shunt release that permits a mechanical switching device to open, with or without time-delay, when the current flows in reverse direction and exceeds a predetermined value.
reversible converter
An electronic converter in which the direction of the power flow is reversible.
reversible hydroelectric set
A generating set capable of assuming the generating or pumping function
reversing switch
A switch for changing the direction of a current in a part of an electric circuit
rheostatic rotor starter
A rheostatic starter for an asynchronous wound-rotor motor which, during the starting period, cuts out successively one or several resistors previously provided in the rotor circuit.
rheostatic starter
A starter utilizing one or several resistors for obtaining, during starting, stated motor torque characteristics and for limiting the current.
right-angle connector
An electrical connector in which the axis of the cable outlet is at right-angles to the axis of the mating face
rigid busbar
A busbar for substations made up of metallic tubes or bars, and supported by insulator posts.
rigid insulator
An electrical insulator intended to give rigid support to an overhead line conductor and to be stressed mainly by bending and compressible loads.
ring substation
A single busbar substation in which the busbar is formed as a closed loop with only disconnectors in series within the loop.
rise and fall pendant luminaire
Pendant luminaire of which the height is adjustable by means of a suspension with pulleys, counterweights, etc.
rolling contact
A switch contact in which one contact piece rolls on the other.
rotary control switch
A manual control switch having an actuator intended to be operated by rotation.
rotary converter
An electric converter that is an electric motor adapted for use with either alternating or direct current and capable of converting one to the other.
rotating frequency converter
An electric rotating machine that converts electrical energy from one frequency to another.
rotating phase converter
An electric rotating machine that transfers electrical energy with change in the number of phases.
rotor contact
A switch contact that is the conductive segment of a rotary switch carried by the rotor and shaped to engage with the contacts on the stator as required
rotor winding
A winding on the rotor of a machine
round battery cell
An electric battery cell with a cylindrical shape, in which the overall height is equal to or greater than the diameter.
run-of-river power station
A hydroelectric power station that uses the river flow as it occurs, the filling period of its own reservoir by the cumulative water flows being practically negligible.
sacrificial anode
An anode of a metal that is used up when protecting another metal against electrolytic corrosion.
salient pole machine
An electric rotating machine in which the field poles project from the frame yoke or hub towards the air-gap.
sandwich winding
A transformer winding that is an arrangement where the windings or parts of windings are arranged axially
satellite substation
A remotely controlled substation, controlled by a master substation.
saturable reactor
An electrical reactor whose magnetic circuit in normal operation becomes saturated when the current exceeds a certain value.
schrage motor
An alternating current commutator motor in which the rotor carries two windings, one of the windings receiving current from the supply by means of slip-rings while the other is connected to a commutator.
scoop-proof connector
An electrical connector incorporating features preventing its contacts, either male or female, from being touched by the front of the mating connector.
screen connector
A cable connector used to make a connection to the screen or shield of a cable for the purpose of continuity or earthing
sealed beam lamp
A pressed glass lamp in which light source, reflector, and lens form a sealed, self-contained unit.
sealed connector
An electrical connector employing a seal capable of fulfilling specified gas-tightness requirements
sealed machine
An electric rotating machine provided with special seals to minimise the leakage of the internal coolant out of the enclosure, or of the surrounding medium into the machine, during normal operation.
sealed primary battery
A primary battery that remains closed and does not release either gas or liquid when operated within the limits specified by the manufacturer.
sealed reactor
An electrical reactor that is non-breathing, that is, so sealed that there can be no significant interchange between its contents and the external atmosphere
sealed transformer
An oil-immersed type transformer that is non-breathing, that is, so sealed that there can be no significant interchange between its contents and the external atmosphere
sealing end
A termination providing a seal to the end of the cable from the external environment and maintaining the pressure, if any, of the cable system
searchlight
A projector suspended in a frame so that it may throw a beam of light in any desired direction.
secondary battery
An electric battery that comprises two or more cells electrically connected and used as a source of energy
secondary cell
An electric battery cell that is designed to be electrically recharged.
secondary relay
An electrical relay that is energized by the current or voltage derived from an instrument transformer or a transducer.
sector-shaped conductor
A shaped conductor the cross-section of which approximates to a sector of a circle.
self-contained pressure cable
A pressure cable in which the pressurizing fluid is contained within the metallic sheath applied during manufacture.
self-cooled machine
An electric rotating machine where the cooling is obtained by means of its own rotation
self-healing capacitor
A capacitor of which the electrical properties after local breakdown of the dielectric, are rapidly and essentially restored
self-regulating trace heating cable
A trace heating cable in which the thermal output generated at its operating voltage decreases as the temperature of its environment increases
semiconductor
A compound that is a material whose capacity to conduct electricity is intermediate between that of a good conductor and an insulator.
semiconductor converter
An electronic converter with semiconductor valve devices.
semiconductor device
A physical object whose essential characteristics are due to the flow of charge carriers within a semi-conductor material
semiconductor diode
A semiconductor device whose rectifying action depends on the properties of a junction between a semiconductor and either a metal or another type of semiconductor.
semiconductor rectifier diode
A semiconductor diode designed for rectification and including its associated mounting and cooling attachments if integral with it
semiconductor switching device
A switching device designed to make the current in an electric circuit by means of the controlled conductivity of a semiconductor.
sensitive switch
A control switch having a snap-action, micro-gap, mechanism which is operated directly by a defined force through a defined travel.
separate winding transformer
A power transformer having windings with no common parts
separated phase layout substation
A substation having a layout in which the conductors of different circuits, relating to the same phase, are located side by side.
separately lead-sheathed cable
A three-core cable in which each core is individually sheathed with lead or lead alloy.
separately-cooled machine
An electric rotating machine where the cooling is obtained by other means than its own rotation
sequence of events recorder
A recording instrument intended to record time stamped events
series connected battery bank
An electric battery bank in which the positive terminal of each battery is connected to the negative terminal of the next battery in sequence
series winding
A field winding connected in series with the armature winding and carrying the whole or part of the armature current
series-parallel connected battery bank
An electric battery bank in which series connected groups of batteries are connected in parallel
serving
A cable layer consisting of one or more non-extruded layers applied to the exterior of a cable.
sf6 circuit-breaker
A circuit-breaker in which the contacts open and close in sulphur hexafluoride.
sf6 switch
A switch-disconnector in which the contacts are in a SF6 gas chamber.
shackle insulator
An electrical insulator used in overhead lines for supporting the wire where a sharp angle occurs
shaded pole motor
An induction motor, that is also a single-phase induction motor, having one or more auxiliary short-circuited windings displaced in magnetic position from the main winding, all these windings being on the primary core, usually the stator.
shadow column instrument
An indicating instrument in which the indications are given by a shadow column on an illuminated scale which can be a part of the instrument or may be separate from it
shaped conductor
A cable conductor the cross-section of which is other than circular.
shed of an insulator
A physical object that is an insulating part, projecting from the insulator core, intended to increase the creepage distance.
shield
A physical object that provides mechanical protection, and that may also have the function of a screen.
shielded cable
An electric cable that contains a cable shield
shielded connector
An electrical connector designed to prevent the radiation of electromagnetic interference to and from the internal conductor(s)
shielding conductor
A cable conductor that is a separate conductor or single-core cable laid parallel to a cable or cable circuit and itself forming part of a closed circuit in which induced currents may flow whose magnetic field will opposed the field caused by the current
short-arc lamp
An arc lamp, generally of very high pressure, in which the distance between the electrodes is of the order of 1 to 10 millimetres
shorting contact
A switch contact designed such that one contact is maintained until after the next contact is made
shrinkable termination
A termination that is prefabricated and designed to be shrunk on to a prepared cable end
shroud
A physical object intended to provide physical protection to otherwise exposed terminals or contacts.
shunt
An electrical conductor connected in parallel with part of a current-carrying electric circuit to divert current from that part
shunt coil
An electromagnetic coil in which current passing will create a magnetic field, designed for shunt.
shunt release
A release of a mechanical switching device energized by a source of voltage.
shunt winding
A field winding connected across the whole or part of the armature circuit
shutter
A physical object that is a part of an assembly that can be moved from a position where it permits contacts of a removable part to engage fixed contacts, to a position where it becomes a part of the enclosure or partition shielding the fixed contacts.
signal cable
An electric cable intended for transmission of electric signals.
signal generator
An electric oscillator that can generate modulated or unmodulated electrical waveforms of known amplitude and frequency, used in adjusting and testing electronic apparatus.
signal lamp
A lamp that is a means of illuminating a signal aspect, such as an electric, an oil, or a gas fuelled lamp
silver chloride-magnesium battery
A primary battery with a positive electrode containing silver chloride as active material, a negative electrode of magnesium and a salt solution as electrolyte
silver oxide cadmium battery
An alkaline secondary battery with an alkaline electrolyte, a positive electrode containing silver oxide and a negative electrode of cadmium.
silver-zinc battery
An alkaline secondary battery with an alkaline electrolyte, a positive electrode containing silver and a negative electrode of zinc.
simplex lap winding
A lap winding in which the number of parallel circuits is equal to the number of poles
simplex wave winding
A wave winding in which the number of parallel circuits is two, whatever the number of poles
single busbar substation
A substation in which the lines and transformers are connected to one busbar only.
single converter
An electronic dc converter that is a current stiff reversible ac/dc converter with direct current in one direction.
single function instrument
A detecting instrument intended for the measurement of one kind of quantity only
single layer winding
A distributed winding in which there is only one coil side in the depth of each slot
single phase commutator motor
An electric motor with a single phase armature winding fed through a commutator.
single phase transformer
A power transformer with two wire connection for single or two phase use
single range instrument
A detecting instrument having only one measuring range
single-conductor cable
An electric cable having only one core.
single-core type current transformer
A current transformer in which only one magnetic core with one secondary winding and one primary winding are provided
single-line diagram
A system diagram in which the polyphase links are represented by their equivalent single line.
single-phase concentric neutral cable
A concentric neutral cable that is a single-core cable consisting of a concentric conductor intended used for the neutral.
single-pole reclosing equipment
An automatic reclosing equipment intended to reclose one pole of a circuit-breaker following a single-phase power system fault
single_phase machine
An electric rotating machine for the generation or utilization of single-phase alternating voltage and current.
skid wire
A cable layer that is wire(s) usually D-shaped, applied with a long length of lay over the cores of a pipe-type cable, to provide mechanical protection and to facilitate sliding while the cores are being pulled into the pipe.
slack bus
An infinite bus where the voltage magnitude is predetermined and which is at the same time reference node and balancing bus.
sliding contact
A switch contact in which relative movement of the contact pieces is substantially in a direction parallel to the contact surface.
slip ring
A ring of conducting material which is attached to and rotates with a shaft, so that the electric current may be transferred to a stationary circuit through a fixed brush pressing against it.
slip-on termination
A termination that is prefabricated and designed to be slipped on to a prepared cable end
slip-ring induction motor
A wound-rotor induction with the secondary winding(s) connected to slip-rings.
slow action contact
A switch contact the relative displacement of which is directly related to the speed of the actuating part
small power distribution board
A distribution board intended to distribute small power typically in an office or domestic environment
small power distribution compartment
A switchgear and controlgear compartment intended to contain distribution equipment for small power circuit
small-power motor
An electric motor having a maximum continuous rating not exceeding 1.1 kW per 1500 rev/min.
smart transmitter
A transmitter intended to transmit with a smart protocol
snap-on contact
A connector contact in which retention is achieved by means of a deformation of the contact area which provides positive axial location.
snatch-disconnect connector
An electrical connector designed to separate when a specified force is applied to the cable, without damage to the cable or the connector
soft-start starter
A starter that employs sold state power electronics to slowly ramp up the motor speed and thus limit starting current
solar power station
A power station producing electrical energy from solar radiation directly by photovoltaic effect, or indirectly by thermal transformation.
solder contact
A connector contact designed for the attachment of the conductor by solder.
solenoid
An electromagnetic coil, which is a cylindrical coil, the length of which is much greater than its transverse dimensions and which is used to produce a magnetic field.
solid conductor
A cable conductor consisting of a single wire
solid electrolyte battery
A primary battery with an ionically conducting solid as electrolyte
solid pole shoe machine
A salient pole machine having non-laminated pole shoes.
solid-core insulator
An electrical insulator of which the core is solid and composed only of homogeneous insulating material
sound level meter
A detecting instrument for the measurement of sound level with a standard frequency weighting and a standard exponential time weighting.
spark-gap
A physical object with two or more electrodes between which an electric discharge is initiated under specified conditions
sparking plug
An ignitor that is fitted into the cylinder head of an internal-combustion engine and used to ignite the explosive mixture in the cylinder by the discharge of a spark between two electrodes at its end.
special purpose motor
An electric motor with special operating characteristics or special mechanical construction, or both, designed for a particular application and not falling into the definitions of general purpose or definite purpose motors.
specified-time relay
An electrical relay such that one or more of the times which characterize it (e.g. operate time) are subject to specified requirements, in particular concerning accuracy.
spiral binder tape
A cable layer that is a metallic tape wound in an open helix on wire armour to keep it in place.
split concentric cable
An electric cable having two conductors in a single concentric layer separated from each other by insulating material.
split core type current transformer
A current transformer without primary conductor, and primary insulation of its own, the magnetic circuit of which can be hinged open (or otherwise separated into two parts) and then closed around the insulated conductor carrying the current to be measured.
split phase motor
A single-phase machine that is an induction motor with an auxiliary circuit which is connected in parallel with the main winding, including an auxiliary winding displaced in magnetic position from the main winding, a phase displacement between the currents in these two primary windings being arranged.
split throw winding
A two layer winding in which the conductors which constitute a coil side in one slot are not all together in another slot
splitter box
A physical object fitted to a multicore cable to enable the individual cores to emerge as single-core cables without disturbing the core insulation.
spotlight
A projector casting a narrow and intense beam.
spout
An electrical socket that acts as a female contact for a device such as a circuit breaker to be racked into position for operation
stabilised dc power supply unit
A direct current power supply unit intended to supply stabilised d.c. electric power according to specified levels and tolerances
stabilized insulator
An electrical insulator having the whole surface of the insulating parts covered with high resistance coating e.g. semi-conducting glaze.
staggered-contact connector
An electrical connector having a staggered arrangement of the terminations and/or the contacts
standard battery cell
A primary cell having, at a specified temperature, an invariant and specific open-circuit voltage, used as a reference voltage.
star connected winding
A transformer winding so arranged that one end of each of the phase windings of a polyphase transformer or reactor, or of each of the windings for the same rated voltage of single-phase transformers or reactors associated in a polyphase bank, is connected
star-delta starter
A starter for a three-phase induction motor such that in the starting position the stator windings are connected in star and in the final running position they are connected in delta.
start relay
A relay that is used in a control circuit with a contactor for starting an electrical machine
start system
A system being able to initiate the running of a device.
starterless fluorescent lamp
A fluorescent lamp designed to operate with an auxiliary equipment which enables it, when switched on, to start rather quickly without the intervention of a starter.
starting motor
A driver, that is an auxiliary motor, used to facilitate the starting and accelerating of a main machine to which it is mechanically connected.
starting winding
A winding that helps starting a motor having insufficient standstill torque or starting a generator acting as a motor.
static relay
An electrical relay in which the designed response is developed by electronic, magnetic, optical or other components without mechanical motion
static relay with output contact
A static relay having a contact in one or more of its output circuits.
static relay without output contact
A static relay having no contact in its output circuits.
stator winding
A winding on the stator of a machine
stator winding with thermal protection
A stator winding which is equipped with a thermal protection to avoid overheating.
stay-put push-button
A push-button that stays in the activated state until manually released
steel wire armour
A cable armour consisting of steel wires, used to protect the cable from external mechanical effects.
step-down substation
A transformer substation in which the outgoing power from the transformers is at a lower voltage than the incoming power.
step-up substation
A transformer substation in which the outgoing power from the transformers is at a higher voltage than the incoming power.
stepper motor
An electric motor designed to make a rapid succession of small, equal movements in response to a pulsed input, each pulse causing one movement,
strain insulator
An electrical insulator placed in a structural support such as a guy or span wire to isolate a portion of the support or to prevent leakage current through the support.
stranded conductor
A cable conductor consisting of a number of wires, all or some of which are wound in a helix
striker fuse
A fuse provided with a striker.
string galvanometer
A galvanometer in which the moving element is a conductive thread which is able to move between the pole pieces of a permanent magnet or of an electromagnet
string insulator unit
A cap and pin insulator or long rod insulator of which the fixing devices are suitable for flexible attachment to other similar string insulator units or to connecting accessories.
strip chart recorder
A recording instrument in which the chart is a strip driven by the chart driving mechanism
stud terminal
A terminal that is a screw-type terminal in which the conductor is clamped under a nut.
stylus recorder
A recording instrument in which the record on the chart is made by a stylus not requiring ink
sub switchboard
A switchboard intended to be used as a sub switchboard.
submersible connector
An electrical connector capable of withstanding submersion to a specified depth
submersible power cable
An electric cable that is a special power cable suitable to supply power to the submersed electric motor
subsea cable
An electric cable intended for underwater installation
substation
A physical object at which electrical current is switched, transformed, or converted, intermediate in rank between a generating station and a low-tension distribution network.
substation bay
A physical object that is the part of a substation within which the switchgear and controlgear relating to a given circuit is contained.
subsynchronous reluctance motor
A reluctance motor in which the number of projections acting as salient poles is greater than the number of the poles formed by the primary winding, thus causing the motor to operate at a constant average speed which is a submultiple of its apparent synchronous speed.
summation current transformer
A current transformer for the measurement of the sum of the instantaneous values of currents having the same frequency within a power system
summation instrument
A process instrument intended to determine the sum of the values of quantities of the same kind measured simultaneously in different circuits
support type current transformer
A current transformer so arranged that it acts as a support for the conductor in the primary circuit
surface temperature classified apparatus
An hazardous area apparatus of which the surface temperature does not exceed limits defined by a certifying body.
surge protection
A physical object that is protecting against a large but momentary increase in the voltage of an electric circuit.
switch
A mechanical switching device for making or breaking contact, or altering the connection of a circuit.
switch compartment
A switchgear and controlgear compartment that contains a switch for switching a circuit
switch contact
An electrical contact that is one of the conductive parts forming a contact.
switch-disconnector
A switch that, in the open position, satisfies the isolating requirements specified for a disconnector.
switch-disconnector-fuse
A switch-disconnector in which one or more poles have a fuse in series in a composite unit.
switch-fuse
A switch in which one or more poles have a fuse in series in a composite unit.
switch-start fluorescent lamp
A fluorescent lamp designed to operate in a circuit requiring a starter for the preheating of the electrodes.
switchable busbar
A busbar including a switch (or a circuit-breaker) in series, intended to connect or disconnect two sections of that busbar.
switchboard
A switchgear and controlgear bearing a set of switches for connecting and disconnecting the various circuits of an electrical system, as of a telegraph, telephone, etc.
switchgear and controlgear
A physical object that is a general term covering switching devices and their combination with associated control, measuring, protective and regulating equipment, also assemblies of such devices and equipment with associated interconnections, accessories, enclosures and supporting structures.
switchgear and controlgear compartment
A physical object that is a part of an assembly enclosed except for openings necessary for interconnection, control or ventilation.
switching device
A physical object designed to make or break the current in one or more electric circuits.
switching diode
A semiconductor diode designed for a fast transition from a high-impedance state to a low impedance state and vice versa, depending on the polarity of the applied voltage
switching substation
A substation that includes switchgear and usually busbars, but no power transformers.
symmetrical fractional slot winding
A fractional slot winding in which a symmetrical polyphase voltage system is induced by the principal air-gap field
synchronous coupling
An electric coupling in which torque is transmitted by attraction between magnetic poles on both the driving and driven members which rotate at the same speed.
synchronous generator
A synchronous machine for use as a generator.
synchronous induction motor
A synchronous motor having a secondary coil winding similar to that of a wound rotor induction motor, which is used for both starting and excitation.
synchronous machine
An electric rotating machine in which the frequency of the generated voltages and the speed of the machine are in a constant ratio.
synchronous motor
An electric motor, that is also a synchronous machine, in which the speed of the motor is in a fixed ratio with the frequency of the current supplied.
system diagram
A diagram that is a topological representation of a system in which the information content depends on a specific requirement.
system operational diagram
A system diagram representing a particular operational condition.
tacho-generator
An electric generator that generates a voltage accurately proportional to the rate of rotation of a shaft or the like
tap changer
A manual control switch that changes the connection to a transformer from one tap to another so as to vary the turns ratio and hence control the output voltage under a varying load.
tapped substation
A substation that is a single supply substation fed from a single branch line.
tapped transformer
A transformer comprising a tapped primary or secondary winding to obtain a variable secondary voltage.
telephone
A physical object that converts sound signals into corresponding variations of electric current (or potential), which is transmitted by wire or radio to a distant point where it is reconverted into sound.
telephone plug
A free connector consisting of two or more contacts on a common shank
temperature compensated thermal time delay switch
A thermal time delay switch in which the time delay is substantially independent of changes in ambient temperature
temperature detector
A detector intended to detect temperature
temperature transmitter data sheet
A data sheet for a temperature transmitters.
terminal
An electrical connector that is part of a component that provides a re-usable connection
terminal block
A physical object that is an assembly of terminals in a housing or body of insulating material to facilitate interconnection between multiple conductors
terminal box
An enclosure that is a box enclosing a cable termination and forming a part thereof.
terminal chamber
A switchgear and controlgear compartment that contains terminals to connect cables to the switchgear
terminal end
A termination to be fitted to a conductor to attach it to a terminal.
terminal rail
A support to which terminals can be attached to form a terminal row
terminal row
A physical object that comprises a number of electrical terminals
termination
A physical object fitted to the end of a cable to ensure electrical connection with other parts of the system and to maintain the insulation up to the point of connection.
test probe
A conductor used to connect electronic test equipment to the device under test.
thermal detector
A detecting element that is sensitive to temperature only, and that will initiate a switching function in the control system when its temperature reaches a predetermined point.
thermal electrical relay
A dependent-time measuring relay that is intended to protect an equipment from electrical thermal damage by the measurement of the current flowing in the protected equipment and by a characteristic curve stimulating its thermal behaviour.
thermal generating set
A generating set consisting of a thermal prime mover mechanically connected to one or more generators of electricity.
thermal instrument
A process instrument that operates by the heating effect due to Joule effect
thermal overload release
An overload release depending for its operation, including its time-delay, on the thermal action of the current flowing in the release.
thermal power station
A power station in which electricity is generated by conversion of thermal energy
thermal power unit
A physical object forming a functional entity usually consisting of a boiler, a thermal generating set, a transformer and their auxiliaries.
thermal protector
An electric protection device, that is an electrically insulated device that is sensitive to the temperature of the machine winding which carries machine current, capable of directly switching off the machine when its temperature reaches a predetermined level.
thermal rated electrical artefact
A physical object that is an electrotechnical product that has a defined endurance of the electrical insulation of the product based on the maximum temperature appropriate to the product under rated load and other conditions.
thermal time delay switch
A control switch whose contacts control a load circuit and are delayed from operating for a predetermined time interval.
thermal trip element
A trip element that uses thermal effects to detect over-current and provide a tripping signal
thermistor
A resistor the resistance of which falls with increasing temperature, enabling it to be used for the sensitive measurement and control of the latter.
thermocouple compensation cable
An electric cable having conductors differing in nature or quality from that of the thermocouple, but having thermoelectric characteristics such that the resulting error is within specified limits for a given temperature range
thermocouple extension cable
An electric cable consisting of conductors of the same nature as the thermocouple elements, extending it to the reference junction and having the same thermo-electric properties as those of the thermocouple within the whole temperature range of utilisation of
thermocouple instrument
A thermal instrument in which the current heats, due to Joule effect, one or more thermocouples on the terminals of which the source tension is measured
thermostatic switch
A pilot switch whose function is controlled by variations of temperature and whose contacts make or break automatically a load circuit when the temperature of the ambient space in which its sensing element placed or the temperature of the surface on which it is fixed reaches a predetermined value.
three phase transformer
A power transformer with three wire connection for three phase use.
three winding transformer
A power transformer that has an additional winding between primary and secondary.
three-core cable
A multicore cable consisting of 3 cable conductors
three-phase concentric neutral cable
A concentric neutral cable that is a three-core cable consisting of a concentric conductor intended used for the neutral.
three-phase earthing transformer
A three phase power transformer intended for connection in a network without a neutral, to provide an artificial neutral
three-phase neutral reactor
An electrical reactor, that is a three-phase reactor, intended for connection in a network without a neutral to provide an artificial neutral
three-phase system diagram
A system diagram of a three-phase system in which all phase and neutral conductors are each represented by separate lines.
three-pole reclosing equipment
An automatic reclosing equipment intended to reclose three poles of a circuit-breaker following power system fault
three-pole reclosing equipment with synchrocheck
A three-pole reclosing equipment with a check on voltage, frequency difference, and phase angle before closing the circuit-breaker.
three-switch mesh substation with bypass
A mesh substation with usually two feeders and two transformers, the fourth circuit-breaker of the four-switch mesh substation is replaced by a bypass with one or two disconnectors.
thyristor
A semiconductor device that is a three-terminal semiconductor rectifier made up of four layers, p-n-p-n, so that when the fourth is positive with respect to the first, a voltage pulse applied to the third layer initiates a flow of current through the device which continues as long as it is greater than some minimum value.
thyristor fuse
A fuse of special characteristics connected in series with one or more thyristors to protect the thyristor or other circuit components, or both.
tidal power station
A hydroelectric power station that uses the differences in water height due to the tides.
time-delay contactor relay
A contactor relay with specified time-delay characteristics.
timer relay
A control relay that will not close its front contacts or open its back contacts, or both, until expiration of a definite time interval after the relay has been energized.
tinned conductor
A metal-coated conductor in which the metal coating is of tin.
tinsel conductor
A cable conductor comprising one or more elements stranded together, each element consisting of one or more thin metal tapes helically wound and supported by a textile thread.
toggle switch
A manual control switch operated by means of a projecting lever that is moved with a snap action, usually up and down.
totally enclosed fan cooled machine
A frame surface cooled machine over which the surrounding air is driven by a fan for cooling purposes.
trace heating cable
A heating cable intended to trace heat pipework and other equipment
traction substation
A substation, the main function of which is to supply a traction system.
transductor
A physical object having a dc winding to control the saturation of a core and an ac winding whose impedance is thereby changed, so that a small change in direct current produces a large change in alternating current.
transfer busbar
A busbar to which any circuit can be connected independently of its bay equipment (circuit-breaker, instrument transformer), the control of this circuit being ensured by another specific bay, available for any circuit.
transformer
A physical object that transforms continuous currents from one voltage to another, or continuous into alternating currents or vice versa.
transformer primary winding
A transformer winding sitting on the ingoing side of a transformer.
transformer primary winding cable
A power cable intended to be connected to the primary side of a transformer
transformer secondary winding
A transformer winding that supplies the current or voltage circuits of measuring instruments, meters, protective or control devices.
transformer secondary winding cable
A power cable intended to be connected to the secondary side of a transformer
transformer substation
A substation containing power transformers interconnecting two or more networks of different voltages.
transformer tapped at primary side
A tapped transformer in which the primary winding is tapped.
transformer tapped at secondary side
A tapped transformer in which the secondary winding is tapped.
transformer winding
A winding that is an assembly of turns forming an electric circuit associated with one of the voltages assigned to the transformer
transformer yoke
A yoke that is a fixed ferromagnetic part, usually not surrounded by a winding, whose principal purpose is to complete the main magnetic circuit.
transistor
A semiconductor device, usually having three terminals and two junctions, in which the load current can be made to be proportional to a small input current, so that it is functionally equivalent to a valve but is much smaller and more robust, operates at lower voltages, and consumes less power and produces less heat.
trench marker
A label plate intended to mark the location of buried cables.
triaxial cable
An electric cable consisting of three concentric conductors
trifurcating box
A splitter box mounted on a three-core cable.
trip amplifier
A pilot switch intended to create a switch action at a preset value
trip element
A physical object that is the part of a circuit breaker that senses any overload condition and causes the circuit breaker to open the circuit.
trip-free mechanical switching device
A mechanical switching device, the moving contacts of which return to and remain in the open position when the opening operation is initiated after the initiation of the closing operation, even if the closing command is maintained.
triple busbar substation
A substation in which the lines and transformers are connected via three busbars by means of selectors.
triple cable
An electric cable in which the conductors are arranged in threes twisted together
tungsten halogen lamp
A gas-filled lamp containing halogens or halogen compounds, the filament being of tungsten.
tungsten lamp
An incandescent lamp whose luminous element is a filament of tungsten.
tuning fork contact
A resilient contact having a shape similar to that of a tuning fork, the two arms of which apply contact force in opposite directions.
tunnel diode
A semiconductor diode that is a two-terminal semiconductor device, consisting of a heavily doped p-n junction, which has negative resistance at low voltage due to quantum-mechanical tunnelling and is principally used as a high-speed switching device.
turbo-generator set
A thermal generating set in which the prime mover consists of a steam turbine.
turn
An electrical conductor formed into a curve with the end points close together but not coincident.
twist-on connector
An electrical connector which is mated by axial force and locked by rotation of the locking device
twisted loom
An electric cable consisting of insulated or single-core cables twisted together without a common covering
two layer winding
A distributed winding in which there are two coil sides in the depth of each slot
two winding transformer
A power transformer with primary and secondary windings.
two-breaker arrangement
A double busbar substation in which the selectors are circuit-breakers.
two-quadrant converter
An electric converter with two possible directions of d.c. power flow associated with one direction of direct current and two directions of direct voltage or vice versa.
two-value capacitor motor
A capacitor start and run motor intended to use different values of capacitance for starting and running.
typological diagram of a network
A diagram that is the graphical representation of the network topology.
uhf transceiver
A radio transceiver that has the methods of signalling through space, without connecting wires, on ultra high frequency
ultraviolet lamp
A lamp that radiates especially strongly in the ultraviolet, the visible radiation produced, if any, not being of direct interest.
umbilical connector
An electrical connector used to connect a cable to a vehicle, which is separated automatically before or during the initial movement of the vehicle
under-voltage release
A shunt release that permits a mechanical switching device to open or close, with or without time-delay, when the voltage across the terminals of the release falls below a predetermined value.
underfloor heating cable
A heating cable intended to be laid under a floor in a building
underground substation
A substation that is built to operate underground.
undervoltage coil
An electromagnetic coil in which current passing will create a magnetic field, designed for undervoltage.
unearthed voltage transformer
A voltage transformer that has all parts of its primary winding, including terminals, insulated from earth at a level corresponding to its rated insulation level
unipolar transistor
A transistor whose functioning depends predominantly on charge carriers of one polarity.
unitunnel diode
A tunnel diode whose peak and valley point currents are approximately equal
universal motor
An electric motor that can be operated by either direct current or single phase alternating current of normal supply frequencies.
unmanned substation
A substation that is operated by personnel who are not stationed at the substation.
unspillable battery cell
An electric battery cell from which electrolyte cannot escape regardless of its orientation
ups data sheet
A data sheet for Uninterruptible Power Supply (UPS).
ups unit
An ac power supply unit that maintains a continuous supply of electric power to the equipment it protects.
vacuum circuit-breaker
A circuit-breaker in which the contacts open and close within a highly evacuated envelope.
vacuum contactor
A contactor that "make/break" electrical contacts inside a sealed "vacuum interrupter" called a vacuum bottle.
vacuum lamp
An incandescent lamp in which the luminous element operates in an evacuated bulb.
vacuum switch
A switch-disconnector in which the contacts are in a vacuum chamber.
vacuum tube
An electronic tube evacuated to such a degree that its electric characteristics are essentially unaffected by the ionization of any residual vapour or gas
valve regulated lead acid battery cell
An electric battery cell that is closed but have a valve which allows the escape of gas if the internal pressure exceeds a predetermined value.
var-hour meter
A detecting instrument intended to measure reactive energy by integrating reactive power with respect to time
variable resistor
A resistor whose value can be adjusted by turning a shaft or sliding a control.
variable speed drive converter
An electric converter intended to provide power to electric motor(s) such that the speed or torque of the motor(s) may be varied
variable speed drive unit
A physical object that consists of an electric motor and controller that is used to adjust the motor's operating speed.
variable thermal time delay switch
A thermal time delay switch in which the time delay is variable within predetermined intervals.
variable-capacitance diode
A semiconductor diode, the terminal capacitance of which varies in a defined manner as a function of applied voltage when biased in the reverse direction, and that is intended for specific applications of this capacitance-voltage relationship.
varistor
A resistor that is a semiconductor diode whose resistance varies non-linearly with the applied voltage.
vented battery cell
An electric battery cell having a cover provided with an opening through which products of electrolysis and evaporation are allowed to escape freely from the cell to the atmosphere
vhf transceiver
A radio transceiver that has the methods of signalling through space, without connecting wires on very high frequency
vibrating reed instrument
A process instrument intended to measure frequency, comprising a set of tuned vibrating reeds, one or more of which resonate under the action of an alternating current of the appropriate frequency flowing through one or more fixed coils
vibration galvanometer
A galvanometer in which the natural frequency of the moving element is adjusted to resonate with the frequency of the current to be measured or detected
vibration transmitter
A transmitter of which the output is proportional to a measured vibration.
viscometer
A detecting meter for measuring the viscosity of liquids.
volt-ampere meter
A detecting instrument intended to measure apparent power (volt-ampere).
volt-ampere-hour meter
A detecting instrument intended to measure apparent energy by integrating apparent power with respect to time
voltage controlled bus
An electrical node with predetermined active input power and node voltage magnitude.
voltage dependent resistor
A non-linear variable resistor in which the resistance depends on the voltage across it.
voltage divider
A physical object that is a linear resistor or series of resistors which can be tapped at any intermediate point to obtain a voltage equal to a desired fraction of the voltage applied between its ends.
voltage map
A document that is the consistent presentation of the voltages at the major nodes of a network under specified operating conditions.
voltage matching transformer
A voltage transformer for matching the rated secondary voltage of the main voltage transformer to the rated voltage of the burden
voltage rated cable
An electric cable conforming to a specification for highest allowable voltage under rated conditions.
voltage regulator
A regulator designed to automatically maintain a constant voltage level.
voltage relay
A relay that is designed for voltage.
voltage transformer
An instrument transformer in which the secondary voltage, in normal conditions of use, is substantially proportional to the primary voltage and differs in phase from it by an angle which is approximately zero for an appropriate direction of the connections.
voltage transformer primary winding
A transformer primary winding to which the voltage to be transformed is applied
voltage transformer secondary winding
A transformer winding that supplies voltage to the circuits of measuring instruments, meters, protective or control devices
voltage-reference diode
A semiconductor diode that develops across its terminals a reference voltage of specified accuracy, when biased to operate within a specified current range
voltage-regulator diode
A semiconductor diode that develops across its terminals an essentially constant voltage throughout specified current range
voltmeter
A detecting instrument for measuring the pressure of electricity in volts.
warm starterless fluorescent lamp
A startless fluorescent lamp of warm start type.
watt-hour meter
A detecting instrument intended to measure active energy by integrating active power with respect to time
wattmeter
A detecting instrument for measuring electric energy.
wave winding
A two layer winding in which the sequence of connections is such that consecutive coil sections lie under adjacent main pole pairs in one direction around the machine
weight transmitter
A transmitter for weighing large quantities of material, and of which the output is proportional to the measured weight. .
welding set
A physical object for arc welding, either ac or dc, comprising a supply unit and a regulator.
welding transformer
A power transformer that is intended to provide power for electric arc welding.
weston standard cell
A standard battery cell with a saline electrolyte saturated with cadmium sulphate, a positive electrode of mercury and solid mercurous sulphate, and a negative electrode of amalgamated cadmium and solid cadmium sulphate.
wet primary battery
A primary battery in which the electrolyte is in liquid and mobile form
wind power station
A power station in which wind energy is converted into electricity.
winding
An electrical conductor consisting of an assembly of interconnected turns and/or coils intended for common operation
winding gear
A physical object intended for winding circuit-breakers in and out of service
winding temperature element
A temperature sensing element that is used to indicate the temperature in windings.
winding thermal class
A winding that is a material class defined by standard specification for windings
wound core
A laminated core made of a continuous strip or strips of magnetically soft material, wound spirally layer upon layer, and having an interlayer resistance that is sufficiently high for the application.
wound primary type current transformer
A current transformer in which the primary winding consists of a single or multi-turn coil
wound-rotor induction motor
An induction motor with secondary polyphase coil winding(s)
wrap contact
A connector contact designed to accept a wrapped connection.
wrap post
A termination point generally rectangular with sharp corners made to accept a wrapped connection.
xlpe cable
An electric cable having cross linked polyethylene as insulation and sheath layers
zener diode
A semiconductor diode with a characteristic showing a sharp increase in reverse current at a certain critical voltage.
zero insertion force component
A physical object designed to eliminate the insertion and withdrawal forces during mating and unmating
zigzag connected winding
A transformer winding in which one end of each phase winding of a polyphase transformer or reactor is connected to a common point, i.e. the neutral point, and each phase winding consists of two parts in which phase-displaced voltages are induced.
zinc chloride battery
A primary battery with a saline electrolyte based on zinc chloride, a positive electrode containing manganese dioxide and a negative electrode of zinc.
zinc silver oxide battery
An alkaline primary battery with an alkaline electrolyte, a positive electrode containing silver oxide and a negative electrode of zinc

encoded_information.xls

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ISO 10303-21 file
encoded data that is a file as defined in an edition of ISO 10303-21
ISO 10303-221
encoded data defined by an edition of ISO 10303-221
alphanumeric string
A string that consists of alphabetic and/or numeric characters
artificial language data
language data that is intended to be intepreted by a machine
character string
A string that does not represent a number
computer program
artifical language data that is a computer program
date representation
encoded data that is a representation of a date.
dd-mm-yy
A date representation with the format 22-01-97
dd-mm-yyyy
A date representation with the format 22-01-1997
dd-mm-yyyy h:mm
A date representation with the format 22-01-1997 17:55
dd-mm-yyyy h:mm:ss
A date representation with the format 22-01-1997 17:55:45
dd-mmm
A date representation with the format 22-Jan
dd-mmm-yy
A date representation with the format 22-Jan-1997
dd-month-yyyy
A date representation with the format 22-January-1997
dd/mm/yy
A date representation with the format 22/01/97
ddmmyy
A date representation with the format 220197
delimiter
a character that indicates a separation between encodings of information.
dwg
graphics that is encoded as AutoCAD's proprietary implementation of the published DXF format
encoded data
A class of information representation that is data encoded according to a formal set of rules
english
natural language data that is in the language designated 'eng' in ISO 639-2
facsimile image
A raster image that is used for facsimile.
font style
A shape of a set of characters
format
a representation form that specifies a formal set of rules
fortran 95
a computer program according to ISO/IEC 1539-1:1997 and its subsequent revisions
graphics
encoded data that is graphics
graphics format
a format for graphics
html text
a text that is according to one of the HTML family of standards issued by W3C
hytime
encoded data that is hypermedia time based structuring language ISO 10744
language data
A class of information representation that is encoded according to a flexible set of rules with great expressivity
mmm-yy
A date representation with the format Jan-97
natural language data
language data that is intended to be interpreted by a human
numeric string
A string that represents a number
programming language
a language designed for communicating with a computer
raster image
encoded data that is a raster image
string
a text that is purely a sequence of characters
text
a class of information representation that is a sequence of characters which can be understood by a person, and that include structuring and formatting information as required
video data
encoded data that is a video
video format
a format for video data

heat_transfer.xls

[top]

air conditioner
A physical object that is intended to bring air to a specified quality.
air cooled heat exchanger
A cooler that is intended to use air as the cooling medium.
air cooler
A cooler that is intended to cool air.
air heater
A gas heater that is intended to heat air.
air preheater
A preheater that is also an air heater.
all welded plate heat exchanger
A plate and shell heat exchanger that contains plates which are fully welded and that has no gaskets.
atomiser
A physical object that is intended to atomise a fluid.
baffle
A physical object that is intended to direct a flow of fluid, but not add or extract a significant amount of energy, and may have a support function.
baffle seal
A seal that is intended to direct the fluid surrounding a tube bundle.
bare tube
A pipe that does not have fins.
barometric condenser
A condenser that has a barometric leg to maintain vacuum conditions.
barometric leg
A physical object that is intended to maintain vacuum conditions by a flow of liquid.
bayonet heat exchanger
A shell and tube heat exchanger that contains bayonet tubes.
bayonet tube
A physical object that is an arrangement of two concentric tubes with the outer one closed at one end, and fixed in a plate at the other. The inner tube is somewhat longer; it’s open at both ends and fixed in a second plate.
belt cooler
A freezer that contains a belt on which solids crystallise.
boiler
An indirect contact heat exchanger that is intended to heat a liquid.
boiler convection section
A boiler section that is intended to transfer heat from the burned fuel to the heated fluid through direct contact between the hot gas and the tube walls.
boiler section
A section that is part of the space within a boiler in which combustion takes place.
boiler tube ferrule
A seal that is a ferruled tube and that is intended to seal or protect the end of a tube fitted into a tube sheet.
bolt extension sleeve
A sleeve that is intended to allow minor movement.
burner
A physical object that is intended to release thermal energy by burning a combustible mixture.
ceramic tube
A pipe that is made of a ceramic material.
chiller
A cooler that is intended to cool to no lower than 4 degrees Celsius.
cladded tube sheet
A tube sheet that is protected by one or more layers of other material.
co boiler
A boiler that is intended to burn carbon monoxide.
coal burner
A burner that is intended to burn coal.
combustion chamber
A chamber that is intended to contain burning material.
condenser
A cooler that is intended to change a vapour to liquid
cooler
A heat exchanger that is intended to cool a physical object.
cooling tower
A cooler and an air cooled heat exchanger that is a tall structure through which air circulates by convection
corrugated plate heat exchanger
A non-tubular heat exchanger that contains corrugated plates.
cross flow shell and tube heat exchanger
A shell and tube heat exchanger that is horizontal with the inlet and outlet nozzles for the shell on opposite sides in order to create a cross flow.
crude oil heater
A heater that is intended to heat crude oil.
cryogenic device
A cryogenic device is a physical object that is intended to operate at cryogenic temperatures.
cryogenic heat exchanger
A heat exchanger that is also a cryogenic device.
crystalliser
A separator that is intended to crystallise and separate the formed crystals from a mother liquid.
de-superheater
A cooler that is intended to cool a gas to its dew point.
direct contact heat exchanger
A heat exchanger that allows contact between the hot and cold fluids
directly fired boiler
A pulverised fuel boiler that operates by injecting milled coal directly into the furnace.
disk and doughnut baffle
A transverse baffle that is several disk baffles and doughnut baffles placed in series.
disk baffle
A baffle that has the shape of a disc.
distance pipe
A pipe that is used as spacer between items.
divided flow shell and tube heat exchanger
A shell and tube heat exchanger that is horizontal and that has one inlet and two outlet nozzles on the shell side to obtain a divided flow pattern.
double pipe heat exchanger
A heat exchanger that consists of two co-axial pipes of different sizes, where one fluid passes though the inner pipe and the other fluid passes through the space between the inner and the outer pipes.
double pipe scraped surface heat exchanger
A double pipe heat exchanger that can mechanically remove crystallised or highly viscous material from the outer surface of the inner pipe.
double segmental baffle
A baffle that is transverse and that consists of two segmental parts in one plane.
double split flow shell and tube heat exchanger
A shell and tube heat exchanger that is horizontal and that has two inlet and two outlet nozzles on the shell side to obtain double split flow.
double tube sheet
A tube sheet that is an assembly of a pair of tube sheets with a gap between them, where one sheet seal the tube side fluid and the other seals the shell side fluid.
double tube sheet heat exchanger
A shell and tube heat exchanger within which each tube sheet is a double tube sheet.
doughnut baffle
A doughnut baffle is a baffle that has the shape of an annular disc.
drains subcooling zone enclosure
An enclosure that is intended to drain the subcooling area enclosure of a tube bundle.
drier
A drier is a physical object that is intended to remove absorbed or adsorbed liquid or water vapour below saturation state.
dry cooling tower
A cooling tower that is an indirect contact heat exchanger.
economiser
A heat exchanger that is intended to recover heat from exhaust gas.
embedded finned tube
A finned tube that has the fin embedded in the tube.
ethylene cracking furnace
A furnace that is intended to crack ethylene.
evaporator
A heat exchanger that is intended to evaporate moisture or solvents in order to obtain a concentrate.
external floating head cover
A cover that closes an external floating head.
externally sealed floating tube sheet head
A rear end head that is a floating head with a seal is mounted between the shell and the head or cover.
falling film evaporator
An evaporator that is vertical and that operates by creating a liquid film on the inside walls of tubes.
fibre tube
A pipe that is made of resin reinforced with fibre.
finned tube
A pipe that is extended with one or more fins to increase its outer surface area.
finned tube air preheater
An air preheater that has finned tubes.
finned tube heat exchanger
A heat exchange that has finned tubes.
fired boiler
A boiler that creates thermal energy by burning material.
fixed tube sheet heat exchanger
A shell and tube heat exchanger that has both tube sheets fixed to the shell.
fixed tube sheet heat exchanger with bellows
A fixed tube sheet heat exchanger that has a bellows to allow thermal expansion within the shell.
flaker
A freezer that is intended to freeze a liquid and then break up the resulting solid.
flame pipe boiler
A fired boiler that has pipes which contain the burning material inside pipes and which are surrounded by the heated fluid. <synonym>fire tube boiler</synonym>
flare tip
A burner that burns gas emitted from a process into the atmosphere.
flash drier
A drier that dries a material by reducing the pressure of the surrounding gas.
floating head
A shell and tube head exchanger rear end head that can move inside a heat exchanger.
floating head backing device
A backing ring that connects a floating head cover to a tube sheet.
floating head cover
A removable cover that is a dished head with a flange.
floating head cover flange
A flange that is welded to a dished head.
floating head heat exchanger
A shell and tube heat exchanger that has one fixed tube sheet is fixed and one floating tube sheet.
floating head with backing device
A floating head that has a backing device which prevents leakage from the shell side to the atmosphere.
floating tube sheet
A tube sheet that can move inside a shell in order to allow thermal expansion.
floating tube sheet skirt
A sleeve that is the cylindrical section of a floating tube sheet.
fluid bed drier
A drier that uses a fluidised bed.
fluid heater
A fluid heater is a heater that is intended to heat a fluid.
fluidised bed boiler
A boiler that maintains the milled coal in suspension during combustion by a rising current of air..
forced down draught furnace
A forced draught furnace that has a downward direction of gas flow.
forced draught air cooler
An air cooler that uses mechanical energy to increase or create the air flow.
forced draught cooling tower
A cooling tower that uses mechanical energy to increase or create the air flow.
forced draught furnace
A furnace that uses mechanical energy to increase or create the air flow.
forced up draught furnace
A forced draught furnace that has an upward direction of gas flow.
freeze condenser
A condenser and a crystalliser that solidifies by reducing the temperature and then removing the formed solids.
freezer
A cooler that is intended to solidify a fluid or to maintain it in a solid state.
front end vessel shell flange
A shell flange that is situated on the stationary head end of a tubular heat exchanger shell.
furnace
A physical object that is intended to induce a reaction in a process fluid by heating it.
gas heater
A heater that is intended to heat gas.
gaseous fuel boiler
A boiler that is intended to use gaseous fuel.
graphite block heat exchanger
A graphite heat exchanger that is a graphite block with holes.
graphite fibre tube
A graphite tube that is made of wound graphite fibres.
graphite heat exchanger
An unfired heat exchanger that has at least one component made of graphite.
graphite plate heat exchanger
A plate exchanger that contains graphite plates.
graphite shell and tube heat exchanger
A shell and tube heat exchanger that contains a bundle of graphite tubes in a metal or lined metal shell.
graphite tube
A pipe that is made of graphite strengthened by a resin.
hairpin multiple double pipe heat exchanger
A multi double pipe heat exchanger that has the shape of a hairpin.
hairpin single double pipe heat exchanger
A single double pipe heat exchanger that has the shape of a hairpin.
heat exchanger
A physical object that is intended to transfer heat from one object to another.
heat exchanger bonnet
A stationary head that has one or more nozzles which allow fluid to pass through the tubes of a shell and tube heat exchanger.
heat exchanger shell
A vessel shell that is part of the vessel containing the fluid surrounding the tubes of a shell and tube heat exchanger.
heat exchanger submerged tube
A pipe that is located below normal liquid level in a tubular heat exchanger.
heat pipe
An unfired heat exchanger that operates by circulating a fluid, so that the fluid as liquid is vaporised by a heat source; the vapour is transported to the heat sink where it is condensed; and the liquid is returned to the heat source.
heat shield
A heat shield is a shield that protects an object from damage by thermal radiation or contact with hot material.
heater
A physical object that is intended to heat another physical object.
horizontal furnace
A furnace that has the combustion chamber with horizontal orientation.
hot oil furnace
A furnace that has the combustion chamber surrounded by an oil-filled chamber that is exposed to the heat source.
ignition burner
A burner that is intended to ignite the main burner or burners
ignition unit
A physical object that is intended to ignite the flame of a burner.
incinerator
A furnace that is intended for the combustion of waste material.
indirect contact heat exchanger
A heat exchanger that separates the hot and cold fluids
induced draught air cooler
An air cooler that uses mechanical energy to force an air flow through the cooler.
induced draught furnace
A furnace that uses mechanical energy to force the air flow through the furnace.
integral finned tube
A finned tube that is made of one piece of material
kettle reboiler
A reboiler that is horizontal and has a separate vapour space.
kiln
A furnace that is an oven or heated enclosure used for processing a substance by burning, firing or drying.
limpet coil
A profile coil that is a half-pipe welded to a wall.
line burner
A burner that is intended to be placed in series.
liquid coupled air preheater
An air preheater that uses an intermediate transport liquid to transfer heat from the heat source to the air stream.
liquid fuel boiler
A boiler that is intended to use liquid fuel
longitudinal baffle
A baffle that is oriented parallel to the tubes.
mixing chamber
A fluid mixer that is a chamber in which two or more gasses are mixed together
multiple double pipe heat exchanger
A heat exchanger that has two or more inner pipes in an outer pipe
natural circulation boiler
A boiler that relies upon convection alone to cause circulation of the heated fluid
natural draught air cooled heat exchanger
An air cooled heat exchanger that relies upon convection alone to cause circulation of the cooling air
non-corrugated plate heat exchanger
A non-tubular heat exchanger that contains plates which are not corrugated.
non-tubular heat exchanger
An indirect contact heat exchanger that separates the hot and cold fluids by plates
once through boiler
A boiler that evaporates water and creates superheated the steam in one pass through the boiler
outside packed floating head
A floating head that has a packing seal on the atmospheric side of the head.
packaged boiler
A boiler that is supplied already assembled as a self-contained package.
pass partition gasket
A gasket that is intended to seal the pass partition plate at the front end or at the rear end.
pass partition plate
A physical object that is intended to partition a shell and tube heat exchanger into different tube passes.
pilot burner
An ignition burner that is intended to burn continuously in order to light other burners when required.
pipe coil
A pipe that is wound in the form of a spiral or helix.
plate air preheater
An air preheater that contains plates to separate the fluids
plate and frame heat exchanger
A corrugated plate heat exchanger that has corrugated plates held together by a frame.
plate and shell heat exchanger
A corrugated plate heat exchanger that has a corrugated plate pack inside a shell.
plate fin heat exchanger
A non-corrugated plate heat exchanger that has flat core plates separated by u-shaped fins or corrugated plates.
preheater
A heater that precedes a process
printed circuit heat exchanger
A non-corrugated plate heat exchanger that has flat plates with chemically etched flow passages which are diffusion bonded together into blocks.
profile coil
A physical object that is in the form of a coil and that that is intended to direct a fluid through a heat exchange.
pulverised fuel fired boiler
A fired boiler that burns pulverised fuel.
rear end vessel shell flange
A shell flange that is situated on the rear head end of a tubular heat exchanger shell.
reboiler
A boiler that is intended to partially vaporise liquid.
refractory lining
A lining that is intended to be fire resistant.
reheater
An indirect contact heat exchanger that is intended to reheat the exhaust steam of the high-pressure part back to superheated steam again.
rotary kiln
A kiln that has a rotating cylindrical chamber which processing solids by burning, firing or drying.
scraped surface heat exchanger
A unfired heat exchanger that can mechanically remove crystallised or high viscous material on a surface
segmental baffle
A baffle that is mounted inside the shell in a shell and tube heat exchanger to force the shell-side flow across or alongside the tubes for a better performance.
semi-welded plate and frame heat exchanger
A plate and frame heat exchanger that is composed of pairs of plates welded together and clamped together with o-rings or gaskets as sealing element.
shell and coil heat exchanger
A tubular heat exchanger that has a single tube in the shape of a coil.
shell and tube condenser
A condenser that is also a shell and tube heat exchanger.
shell and tube cooler
A cooler that is also a shell and tube heat exchanger.
shell and tube heat exchanger
A tubular heat exchanger in which a tube bundle is surrounded by a shell.
shell and tube heat exchanger channel
A physical object that is part of a shell and tube head exchanger; that is intended to direct the tube side medium for distribution through the tubes; and that is closed by a removable cover permitting access to the ends of the tubes.
shell and tube heat exchanger channel and removable cover assembly
A stationary head that is an assembly of a shell and tube heat exchanger channel and a shell and tube heat exchanger channel cover.
shell and tube heat exchanger channel cover
A removable cover that closes a shell and tube heat exchanger channel.
shell and tube heat exchanger front end
A physical object that is the end of a shell and tube heat exchanger where the tube side fluid enters the heat exchanger.
shell and tube heat exchanger front end head
A vessel head that is located at the front end of a shell and tube heat exchanger.
shell and tube heat exchanger internal bellows
A bellows that is located inside the shell of a shell and tube heat exchanger to absorb thermal expansion.
shell and tube heat exchanger rear end head
A vessel head that is located at the rear end of a shell and tube heat exchanger.
shell and tube heat exchanger tube bundle
A tube bundle that is part of a shell and tube heat exchanger.
shielded tube
A pipe that is equipped with a protection layer to prevent damage by high heat influx.
shock tube
A pipe that is located at the front of a tube bank facing a heat source and thus receiving the highest heat flux.
single double pipe heat exchanger
A double pipe heat exchanger that has one inner pipe within the outer pipe.
single spit flow shell and tube heat exchanger
A shell and tube heat exchanger that splits the fluid stream at the shell side in two directions.
spool wound heat exchanger
A tubular heat exchanger that has tubes wound in the shape of a helix
start up burner
A burner that is intended to pre-heat a furnace to ease start up.
stationary head
A vessel head that is a removable cover and that has one or more nozzles which allow fluid to enter or exit the tubes of a shell and tube heat exchanger.
stationary head  channel flange
A flange that is welded to a stationary head channel.
stationary head bonnet flange
A flange that is welded to a stationary head bonnet.
stationary head nozzle
A nozzle that is mounted on a stationary head
stationary tube sheet
A tube sheet that is held in a fixed position with respect to the vessel shell
steam coil
A pipe coil that contains steam
steam de-superheater
A de-superheater that is intended to cool steam to its dew point.
steam generator
A boiler that is intended to generate steam.
steam heated air preheater
An air preheater that uses steam as the hot fluid.
studded tube
A pipe that has studs welded perpendicular to the tube surface
subcooling zone drain
A drain that is intended to drain the subcooling area of a shell and tube heat exchanger.
sulphur condenser
A condenser that is intended to cool and condense sulphurous vapour.
superheater
A gas heater intended to heat gas above its dew point.
surface condenser
A condenser that contains vertical plates to separate condensate from a vapour flow
swirl burner
A burner that contains vanes to cause rotation of the combustion air
thermosyphon reboiler
A vertical reboiler that uses density differential between liquid and boiling liquid as the driving force for fluid flow.
transverse baffle
A baffle that has holes and that is mounted orthogonal to the tubes in a shell and tube heat exchanger to support the tubes and force the shell-side flow across the tubes for better performance.
tube bundle
A physical object that consists of several tubes assembled together allowing multiple flow paths from a single source.
tube bundle support plate
A plate that is intended to support a tube bundle.
tube sheet
A plate that is intended to support tubes and to isolate the shell side from the tube side of a shell and tube heat exchanger.
tube sheet hole
A hole that is a hole in a tube sheet intended for passage and support of a tube or a rod.
tubular heat exchanger
An indirect contact heat exchanger that separates the hot and cold fluids by tubes
u-tube
A pipe that has the shape of a U.
u-tube bundle
A shell and tube heat exchanger tube bundle that consist of U-tubes.
u-tube heat exchanger
A shell and tube heat exchanger that has a U-tube bundle
unfired heat exchanger
An indirect contact heat exchanger that does not convert chemical energy into heat.
vertical furnace
A furnace that has a vertical combustion chamber
vertical reboiler
A reboiler that has a vertical vessel
vessel cylindrical shell
a physical object that is the cylindrical part of a vessel
vessel head
A physical object that is intended to close a vessel shell
vessel shell
A physical object that is all or part of the pressure containing outer part of a vessel
vessel shell cover
A cover that is intended to enclose the end of a vessel shell.
vessel shell flange
A flange that is welded to a vessel shell to allow the attachment of a shell head or other objects.
waste heat boiler
A boiler that is intended to recover waste heat from a fluid stream
water pipe boiler
A fired boiler that has combustion outside the pipes containing the heater fluid.
wet cooling tower
A cooling tower that is a direct contact heat exchanger.

information.xls

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ACX Number
An identifier that is a registry number for substances in ChemACX, Chemfinder.Com, and submitted via Open Chemistry.
ANSI standard
A national standard that is owned by the American National Standard Institute.
API code
A code that consists of five characters as defined by API
API method
A standard method standardised by the API organisation
API plan
A plan that indicates cooling water hook-up and supply to various equipment components.
API seal plan
An API plan that indicates sealing piping arrangements for various seal types and seal auxiliaries.
API standard
A standard that is owned by the American Petroleum Institute.
ASTM method
A standard method standardised by the ASTM organisation
BSI standard
A national standard that is owned by the British Standards Institute.
CAS Registry Number
An identifier that is an accession number assigned to a chemical compound by the Chemical Abstracts Service, a division of the American Chemical Society.
DIN method
A standard method standardised by the DIN organisation
DIN standard
A national standard that is owned by the German DIN organisation
EL number
A product code managed by Electroforeningen, an association of Norwegian manufacturers, sales agents and wholesalers.
IEC standard
An international standard that is owned by the IEC organisation
INAM class name
A class name according to the INAM system as defined in NIAS D29.
ISO standard
An international standard that is owned by the ISO organisation
NATO manufacturer code
An organisation code for a manufacturing organisation assigned by NATO.
NATO stock number
A product code assigned by NATO.
NEN standard
A national standard that is owned by the Dutch NNI organisation
P control algorithm
A control algorithm that contains a proportional algorithm.
PD control algorithm
A control algorithm that contains a proportional and differentiating algorithm.
PI control algorithm
A control algorithm that contains a proportional and integrating algorithm.
PID control algorithm
A control algorithm that contains a proportional, integrating and differentiating algorithm.
RTECS
An identifier for a substance registered in the U.S. Registry of Toxic Effects of Chemical Substances, which is unique within that context.
SMPT e-mail address
An e-mail address according to the SMTP format.
STEPlib identifier
An identifier of something registered in the STEPlib Reference Data Library.
address
An identifier that is a designation of a place where a physical object can be found.
advice
A recommendation regarding a decision or course of conduct
agenda
A list of subjects to be hadled or discussed during a meeting
algorithm
A procedure that prescribes what to do to derive one or more output values from input values.
application description
A description that describes for what purpose a physical object or activity is intended to be used
application method
A method for the way in which something can be installed.
application system
An information about painting
arrangement
An information that describes a composition and/or structure
assertion
An illocution of a proposition that is declared to be the case.
assignment statement
An algorithm that assigns a value to a variable
association standard
A standard that is controlled by an association of individuals or companies, but not countries.
balance
An information that consists of two sets that are intended to be compared.
begin command
A command to start the first action in a sequence
bolt and nut design specification
A design specification Bolt conforming to the specification ANSI/ASME B18.2.1, Square and Hex Bolts and Screws, Inch Series, including Hex Cap Screws, and Lag Screws. Nut conforming to the specification ANSI/ASME B18.2.2, Square and Hex Nuts (Inch Series)
boolean result
A result as defined in ISO 10303-42
budget proposal
A proposal to allocate money to activities
business directive
A directive that is company specific and consists of instructions, controls and requirements imposed on an organisation to guide the performance of its business activities.
certificate number
A document number that identifies a certificate.
certification specification
A specification European Standard for Metallic Products - Types of Inspection Documents.
change order
An order that describes changes relative to a previous order
change proposal
A proposal to execute an activity to change something
characterisation algorithm
An algorithm that defines adaptation to arrive at a specified curve shape
characterisation algorithm (control)
A characterisation algorithm intended to characterise information contained in a signal
class identifier
An identification code for a class
class name
A name of a class
code
A name that is stuctured according to some coding rule
command
An information that is a set of instructions
commissioning directive
A business directive that consists of instructions, controls and requirements intended to direct commissioning activities.
commissioning procedure
A procedure with a step by step description of activities required to commission an object.
company code
An organisation code that identifies a company.
company name
A name of a company
component data
A data about the components in a mixture, assembly or collection.
concatenated code
A code that is assembled in sequence.
concept
An information that is conceived in the mind
confidential information
An information that is confidential
constant assignment
An assignment statement to assign a constant value to a parameter
construction directive
A business directive that consists of instructions, controls and requirements intended to direct construction activities.
contract number
An identifier that is an alphanumeric code intended to identify a contract.
control algorithm
An algorithm intended as input for an automated controller or control computer
control procedure
A procedure intended to control a process
control recipe
An algorithm that includes instructions to execute other algorithms in a time sequence
corporate standard
A standard that is controlled by a corporation, i.e. that is not publicly available.
corrective maintenance procedure
A maintenance procedure that describes how to perform corrective maintenance activities.
cost estimate
An estimate of costs of resources required.
country code
An identification code of a country
country name
A name of a country
customer address
A postal address of a customer.
cyclone algorithm
A process simulation algorithm intended to simulate the cyclonic separation of a fluid into twoo or more parts
data
An information that is a physical representation of information independent of its interpretation.
data sheet
A description that is a set of defined fields within which information is supplied.
description
An information intended to describe something
design (information)
A specification intended to be used to create an item
design note
A note (annotation) related to the design of an item
design rule
A rule that contains a prescriptive procedure and/or constraint for the design of an item
design specification
A specification according to which an item is intended to be designed
diagram
A description that represents information using the topology of symbols.
direct telephone number
A telephone number to which a connection can be established directly without having to be connected through a manual activity at a switchboard.
directive
An information that consists of instructions, controls and requirements imposed on a person or an organisation to guide its activities.
discipline code
An identification code for a discipline
disposal directive
A business directive that consists of instructions, controls and requirements intended to direct activities related to the disposal of material.
distillation algorithm
A process simulation algorithm intended to simulate distillation processes
distillation stage algorithm
A flash algorithm intended to simulate distillation stage processes which separate liquids from gases
document
An assembly of information items with a structure.
document name
A name of a document
document number
An identification code for a document or kind of document.
drawing identifier
An identification code for a drawing or a class of drawings.
drawing name
A document name of a drawing
duty calculation algorithm
A heat flow calculation algorithm where the result a heat flow rate over heat transfer equipment
e-mail address
An address intended to be used to send electronic mail.
economic loading schedule
A schedule for the most economic use of the available components of a network.
electrical protection algorithm
An algorithm performed within electrical protection devices to protect electrical circuits and equipment
encoding standard
An information that is a set of prescriptive rules, guidelines or characteristics of activities or their result
end command
A command to terminate an action or a sequence of actions
energy balance
A balance with a collection of information about energy flow inputs and outputs of a process.
engineering design strategy
A strategy about the philosophy and approach for a design.
equipment specification
A specification of European Standard for Metallic Products - Types of Inspection Documents with Certificate of compliance with the order.
equipment tag number
A tag name for referencing a piece of equipment
estimate
An information that is a result of an estimation.
fabrication method
A method for the way in which something can be fabricated
fax number
A telephone number that is the identification of a connection to that a fax machine is intended to be connected.
feed back control algorithm
A control algorithm that defines how a unit control is coordinated
feed forward control algorithm
A control algorithm that defines how a unit control is coordinated
filtering algorithm
An algorithm that defines an adjustment of information in the frequency domain
filtering algorithm (control)
A control algorithm intended to adjust information contained in a signal
flash algorithm
A process simulation algorithm intended to simulate (partial) vapour-liquid equilibriums intended to separate liquids and vapours
fluid transport algorithm
A process simulation algorithm intended to simulate fluid flow processes
functional requirement
A requirement for a physical object that describes the activities the object should able to execute
functional unit identifier
An identification code that identifies a functional unit.
fuzzy logic control algorithm
A control algorithm that defines how a unit control is coordinated
gas-solid separation algorithm
A process simulation algorithm intended to simulate processes which separate solids from gases
gasket design specification
A design specification of a gasket conforming to the specification ISO 7483, Dimensions of gaskets for use with flanges to ISO 7005.
general specification
A specification that applies to a number of physical objects
generation schedule
A schedule of generation facilities for a specified period
guideline
An information that prescribes or advises on the execution of activities
hazard category
An information that is an class of hazardous situation or state
heat balance
An energy balance that is a collection of information about thermal energy inputs and outputs of a process.
heat flow calculation algorithm
A property calculation algorithm where the result a heat flow rate
house number
An identification code for a property that identifies the property's relative position within a street.
identification code
An identifier that is encoded according to some convention.
identification number
An identification code that is numeric.
identifier
A term that is sufficiently unique within a context to identify an object.
illocution
An information that is a qualification of a proposition
incidence matrix
A matrix that describes the topology of a network.
index
An information intended to capture some facts about relevant objects for look up
information
A class of representation of thing that is a set of one or more facts about an object.
input characterisation algorithm
A characterisation algorithm (control) intended to define characterisation of information in an input signal
input filtering algorithm
A filtering algorithm (control) intended to filter information contained in an input signal
input scaling algorithm
A scaling algorithm intended to scale the value of an input signal
input validation algorithm
A validation algorithm (control) intended to define validation of information in an input signal
inspection procedure
A procedure that contains instructions on how to inspect an item.
inspector name
A person name for a person that is or has been in the role of inspector of an artefact or an activity.
installation procedure
A procedure that describes how to install an item.
insulation requirement
A requirement about whether insulation is required and about the type of insulation material or process
intended service code
A code that indicates a type of product for that an item is intended to be used.
international standard
A standard that is controlled by an international standardisation body, i.e. that is in the public domain.
item number
An identifier of an item.
label
A name used in particular circumstances.
layout requirement
A requirement about the location of items
lesson
An information that consists of presented knowledge with the intention to transfer it to somebody.
lesson learned
A lesson which is learned about a way to act or not to act.
line label
A tag name that is intended to reference a pipeline.
linearisation algorithm
A characterisation algorithm that defines compensation for non linearity
liquid-solid separation algorithm
A process simulation algorithm intended to simulate processes which separate solids from liquides
list
Information that consists principally of a number if items in sequence
logic control algorithm
A control algorithm that defines how a unit control is coordinated
maintenance directive
A business directive that consists of instructions, controls and requirements intended to direct maintenance activities.
maintenance procedure
A procedure that describes how to perform routine, preventative and/or corrective maintenance activities.
maintenance strategy
A strategy about maintenance in case of preventive, breakdown or shutdown maintenance.
manufacturer address
A postal address of a manufacturer.
manufacturer name
A name of a person or organisation who is the manufacturer of an object or a type of objects.
manufacturer product code
A product code that is assigned by the manufacturer to a product to identify an item or a type of items.
manufacturer product name
A product name assigned by a manufacturer to a product or type of product.
manufacturer s type
A model name that is the name of the class of catalogue item from a manufacturer's catalogue
mass calculation algorithm
A property calculation algorithm where the result a mass
mass flow calculation algorithm
A property calculation algorithm where the result a mass flow rate
material balance
A balance which is an the collection of all inputs and outputs of a process such that the mass of the outputs minus the inputs is zero.
material specification
A specification that describes the applicable materials for one or more items.
material subcode
A code that is derived from either the API-610 or a different specification in order to specify the applicable materials.
matrix
A description of something resembling a mathematical matrix esp. in rectangular arrangement of elements into rows and columns
method
A procedure that is a formal definition of a type of activity
mixing algorithm
A process simulation algorithm intended to simulate the merging and/or homogenisation of one or more fluids
mode of operation name
A name of a way to operation an item.
model and size
A name that is a concatenation of a model name and a size.
model name
A name of a kind of item.
model predictive control algorithm
A control algorithm that defines how a unit control is coordinated
multi variable control algorithm
A control algorithm that defines how a unit control is coordinated
name
An identifier that is the utterance or expression by that an object e.g. a thing, person, organisation, place, etc. is known or spoken to or of.
national standard
A standard that is controlled by a national standardisation body, i.e. that is in a national public domain.
nominal value
A name of a property intended to be used to define an item.
note (annotation)
A remark for which somebody's attention is wanted
operating procedure
A procedure how to start, operate and shut-down a facility under normal and abnormal circumstances.
operation directive
A business directive that consists of instructions, controls and requirements intended to direct activities related to the operation of a facility.
optimisation algorithm
An algorithm of a mathematical model intended to determine an optimum solution for a problem
order
A description of a request or command to deliver goods or services under specified terms and conditions.
order item number
An item number intended for identification of an item on an order
order number
An identifier of an order.
organisation address
A postal address of an organisation.
organisation code
An identification code for an organisation.
organisation post box address
A post office box address of an organisation.
organisation street address
A street postal address of an organisation.
organisaton name
A name of an organisation.
originator code
An identification code for the originator of a drawing or other document, message or file.
output characterisation algorithm
A characterisation algorithm (control) intended to define characterisation of information in a signal to become an output signal
output scaling algorithm
A scaling algorithm intended to scale the value of an output signal
output validation algorithm
A validation algorithm (control) intended to define validation of information in a signal to become an output signal
patent country code
A country code according to the patent coding system.
performance curve number
An identifier of a performance curve
person name
A name of a person.
personal address
A postal address of a person.
philosophy
An information that describes a fundamental reasoning
pipe design specification
A design specification Buttwelding end conforming to the specification ANSI/ASME B16.25, Buttwelding Ends
pipe fitting design specification
A design specification Pipe Fitting conforming to the specification ANSI/ASME B16.11, Forged Fittings, Socket-Welding and Threaded
pipe flange design specification
A design specification Buttwelding end conforming to the specification ANSI/ASME B16.25, Buttwelding Ends
pipeline identifier
An identification code for a pipeline
pipeline name
A name of a pipeline.
piping class
A specification defined by specified circumstances in which piping components may be applied.
piping class specification
A specification that is specific for a collection of piping items
piping specification
A specification that is specific for a collection of piping items
place name
A name of a place.
plan
An information that is a course of action
planned maintenance procedure
A maintenance procedure that describes how to perform planned maintenance activities.
plural term
A term intended to refer to more than one thing at once.
policy
An information that is a standardised procedure or course of action
portfolio
An information that is a list of goods or services that can be delivered
post code
An identification code for an area used by the postal system.
post office box address
A postal address at a post office.
postal address
An address intended for use to send post addressed to somebody.
postal country code
A country code according to the postal coding system.
preventive maintenance procedure
A maintenance procedure that describes how to perform preventive maintenance activities.
preventive maintenance strategy
A maintenance strategy for preventive maintenance.
prime function
A service description for a role or purpose that is primarily intended
principle
An information that is a phaenomenon under defined circumstances
procedural specification
A specification a set of related data that defines a good or service
procedure
An information that a set of logically sequenced instructions for the way of executing a class of activity
process optimisation algorithm
An optimisation algorithm intended to describe how to calculate an optimal way of processing within constraints
process optimiser
A process optimisation algorithm completed with tuning coefficients and defined constraints intended to accurately optimise a specific process
process simulation algorithm
A simulation algorithm intended to describe how to simulate a process
process stream data
A stream data about a process stream.
procurement directive
A business directive that consists of instructions, controls and requirements intended to direct procurement activities.
product code
An identification code intended to identify a kind of artefact.
product data
A data about an artefact
product identifier
An identification code for an artefact or type of artefact
product name
A product identifier for a type of artefact.
product version code
A product code for a version of an artefact.
program
A list of instructions, commands and expressions intended to be executed.
project code
An identification code for a project
project plan
A plan for the execution of a project
project specification
A specification applicable to a special project
proper name
A name of an individual.
property calculation algorithm
An algorithm that defines how to calculate a property
proposal
A recommendation to execute an activity to achieve or accept a situation that is recommended or desired according to one or more persons who are the proposers
proposition
An information that is a statement about a situation or occurrence
proprietary technology
A technology which knowledge is owned by a legal entity
protection description
A description of the way in which something is or has to be protected
purchase order
An order that describes the scope, price and delivery conditions of an item that is bought
purpose description
A description of a reason, a target or an objective
qualification
An information of personal evidence of competence for a specific type of task
reason
An information that clarifies why a proposition is stated
recommendation
A suggestion that is considered useful, good or wise by one or more persons
recursion
An information that describes a repetition of something
reference data library
An information that is intended for reference.
remark
An illocution that is an isolated statement about a situation or occurrence.
requirement
A specification of something to be delivered
requisition
An information with a brief description of the parts to be ordered, with a statement of the pertinent drawings, specifications, etc., as well as a list of drawings and documents to be provided by the manufacturer/supplier
reset command
A command intended to give a signal a predefined state, opposite to a set state
result
An information that is output of some action
revision code
An identification code of a version of a document.
rigorous distillation algorithm
A distillation algorithm that is detailed and therefore an accurate simulation
rule
A procedure that a prescriptive procedure
safety engineering design strategy
An engineering design strategy for safety design in order to meet regulatory requirements and to conform to the applicable codes and standards.
scaling algorithm
An algorithm where the output value has a bias and gain compared to the input value
schedule
A list that is an inventory of elements put in sequence
sequence control algorithm
A control algorithm intended to control a sequence of distinct process changes
sequence description
A description of a succession
serial number
An identification code for a specific individual physical object as assigned by its manufacturer.
service description
A description intended to describe the purpose of an item
set command
A command intended to give a signal a predefined state
short cut distillation algorithm
A distillation algorithm that is simplified and therefore less accurate than rigorous simulation
short name
A name that is an abbreviation or an acronym of the normal name
signal selector algorithm
An algorithm that defines a signal selection activity
simulation algorithm
An algorithm of a mathematical model intended to describe the behaviour of materials
singular term
A term intended to make a definite reference to a single, non plural object.
specific design
An information that indicates whether something is designed for a specific purpose.
specification
A definition of one or more aspects of one or more physical objects or activities.
splitting algorithm
A process simulation algorithm intended to simulate the splitting of a fluid into twoo or more parts
standard
An information that contains prescriptive rules, guidelines or characteristics of activities or their result
standard method
A method that is standardised by an authority
standard specification
A specification that specifies one or more aspects for materials or activities
standard technical specification
A standard specification for the welding of materials
start command
A command intended to initiate the beginning of an activity
state calculation algorithm
A control algorithm where the result is a state
stock strategy
A strategy for holding stock optimised for cost and delivery requirements.
stop command
A command to terminate an action or a sequence of actions
strategy
An information about a direction for action
strategy document
A document that contains a strategy
stream data
A data about the chemical composition, physical state, and quantities and qualities of flowing material.
stream number
An identification number intended to identify a stream within the context of a process.
street name
A name of a street.
street postal address
A postal address indicated by a street where the place is located.
structural information
An information about a structure
subcode
A code that is part of another code
suggestion
An illocution that is communicated to somebody as an option for action or conclusion
summary
An information that is an abbreviated form of the most important part of other information
supervisory control algorithm
A control algorithm that defines how a unit control is coordinated
supplier address
A postal address of a supplier.
supplier name
A name of a person or organisation that had or has or is intended to have the role of supplier in a transaction.
supplier product name
A product name assigned by a supplier.
switch command
A command to select between two or more actions.
switchboard telephone number
A telephone number that is an identification of a connection to a switchboard.
system pattern
An information that describes a repetitive arrangement of the nodes in a system and their connections, e.g. feeder, ring, mesh, etc.
system specifications
A specification for a system.
tag name
A code intended to reference an item.
technical specification
A specification intended to define a good or service
technology
An information that describes a way to construct a facility and/or to operate a process
telephone number
An address that identifies of a specific telephone sender/receiver or place for such a sender/receiver.
test method
A method intended to verify the quality of a substance or a material item
thread design specification
A design specification Piping Component conforming to the specification ANSI/ASME B1.20.1, Pipe Threads, General Purpose (Inch).
time estimate
An estimate of elapsed time and/or manpower required for one or more activities or kinds of activities.
title of document
A name of a document
title of person
An information that describes a status
topography
An information that describes the configuration of a surface including its relief and the position of its natural and man-made features
totalise function
A control algorithm if reset then 0 else if start then accumulate
tracing requirements
A requirement for the availability of tracing material or a tracing process
unknown information
An information that exists but its identification is unknown
utility stream data
A stream data about a utility stream.
validation algorithm
An algorithm that determines whether information satisfies a specified criterium.
validation algorithm (control)
A control algorithm intended to validate the information contained in a signal
vendor data
A data received from a vendor concerning items being procured from that vendor.
wait command
A command to wait during a specified time or until a new command is given
welding procedure specification
A specification that describes the welding procedure and process of a specific weld
word
A term that is an observable expression of meaning, denoting something.
x400 e-mail address
An e-mail address according to the X400 e-mail system conventions.

instrumentation.xls

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2-valve manifold
A valve manifold assembly with 2 valves and 3 ports.
5-valve manifold
A valve manifold assembly with 5 valves and 6 ports.
absolute pressure transmitter
A pressure transmitter where pressure is applied to one side of the sensor while the other side has a vacuum chamber.
accelerometer
A detector that is intended to measure and record acceleration.
acetic acid analyser
An analysing instrument that is intended to measure the amount of acetic acid in liquid streams or liquid samples.
actuator
An electromechanical transducer that is intended to convert energy (electric, pneumatic or hydraulic) from an external source into kinetic energy (motion) in response to a signal.
actuator stem
A physical object that is a rod-like extension of the diaphragm plate or piston in an actuator to permit convenient connection to e.g. a valve stem.
air flow meter
A flow meter that is intended for measuring air flow rate.
air pressure regulator
A pressure regulator that is intended to control the air supply pressure to a consumer and keeping it invariable independent of the air consumption.
air pressure regulator and filter
A pressure regulator that is an assembly of an air pressure regulator and an air filter.
alarm signal processing circuit board
A control circuit board that is intended to receive and encode one or more signals and produce an output signal to an alarm unit.
alarm unit
A physical object that is intended to process and annunciate alarms.
alignment instrument
A detecting instrument that is intended to measure and indicate the position of equipment relative to each other.
amca straightener
A flow straightener basically consisting of a honeycomb with square meshes.
ampere-hour meter
An electric measuring instrument that is intended to measure a quantity of electricity by integrating current with respect to time.
amperemeter
A detecting instrument that is intended to measure the value of an electric current.
amplifier circuit board
An amplifier that is mounted on an electronic circuit board intended to receive and amplify one or more signals.
analogue indicating instrument
An indicating instrument that gives a visual indication of a measured variable by a pointer on a dial.
analogue operating instrument
A process instrument that is operating with numbers represented by some physically measurable quantity.
analogue signal input circuit board
An input circuit board intended to receive and encode one or more analogue signals into a computer interpretable format.
analogue signal output circuit board
An output circuit board intended to decode and transmit one or more analogue signals from a computer interpretable format into an analogue output signal.
analogue temperature indicating instrument
An analogue indicating instrument that indicates temperature in an analogue way.
analogue temperature indicator housing
A temperature indicator housing that is intended for an analogue indicator.
analogue to digital converter
A signal converter that is intended to convert an analogue input signal into a digital output signal.
analysing instrument
A detecting instrument that is intended to analyse a substance for its composition and/or properties.
anemometer
A detecting instrument for recording wind speed, and possibly wind direction.
antenna
An electromagnetic transducer that is a physical object made of conducting material which is capable of radiating or receiving electromagnetic waves.
antisurge controller
An electronic controller that continuously measures and provides multi-variable proximity-to-surge calculations in order to protect the compressor against surge.
areometer
A detecting instrument consisting of a graduated glass tube terminating in a loaded bulb, for measuring the specific gravity of fluids.
astatic instrument
A process instrument that is so constructed as to be unaffected by uniform magnetic fields of external origin.
averaging pitot tube flow meter
A pitot tube flow meter that uses a pitot tube with multiple openings.
axial displacement probe
A detecting element that is intended to detect axial displacement.
back pressure regulator
A regulator that uses the up-stream pressure to control the valve trim position.
bell
A physical object that is a hollow body with a flared mouth made of cast metal. Formed to emit a clear musical sound by the sonorous vibration of its entire circumference when struck by a clapper, hammer or other appliance.
bimetal temperature indicator
A temperature indicator that is not powered and uses a bimetallic element as sensor.
bimetallic temperature element
A temperature element that is using a bi-metal strip to convert a temperature change into mechanical displacement.
bimetallic temperature gauge
A temperature gauge that is using a bimetallic strip as temperature element.
biplanar flange
An instrument process flange that accommodates installations that require traditional biplanar configuration.
boiling point analyser
An analysing instrument intended to determine the boiling point or boiling range of a fluid.
bolted rupture disc holder
A rupture disk holder where the rupture disk seating surface is machined directly into the inlet and outlet flange.
bourdon tube
A specially formed tube closed at one end which undergoes a measurable physical deflection within its elastic limit when subjected to a pressure difference between the inside and the outside of the tube.
bourdon tube differential pressure gauge
A differential pressure gauge that utilizes two connected bourdon tubes as the measuring element.
bourdon tube pressure gauge
A pressure gauge that is utilizing a bourdon tube as detecting element.
bull eye
A sight glass with a circular shape.
burner controller
An electronic controller that is designed and programmed to control the operation of a burner.
burst alarm unit
An alarm unit intended for use with a rupture disc.
bus controller
An electronic controller that is intended to control the data traffic of a bus.
capacitance probe
A detecting element that is intended to detect changes in the dielectric constant.
capacitive level transmitter
A level transmitter which that is utilizing the capacitance of the processed material to detect level.
capacitive pressure element
A pressure element that utilizes a diaphragm affecting a capacitance cell.
capillary temperature element
A temperature sensing element that consist of a vapour or liquid filled bulb (the sensing element) that via a capillary tube is connected to a bellow that can expand or contract in response to temperature changes and operate an indicating instrument, valve etc.
capillary temperature element armour
A physical object that is an armour of a capillary temperature element.
carbon dioxide analyser
An analysing instrument intended to determine the concentration of carbon dioxide.
catalytic analyser
A gas analyser that is using catalytic combustion of gases in air or oxygen.
cause and effect chart
A chart or diagram that is showing the consequences of different errors, especially related to failures in the control system.
chart
A document where the information is exhibited in a methodical and/or tabulated form.
chart driving mechanism
A physical object that is moving the chart in a way which is a function of a variable, generally time.
chart recorder
A recorder that is intended to record on a chart.
chemical colorimetry analyser
An analysing instrument intended to measure alkalinity by colorimetric pH determination in a buffered sample.
chemical seal diaphragm
A diaphragm that is intended for a sealing element at the connection to a process medium.
chromatograph
An analysing instrument that applies the principle of chromatography to analyse the molecular composition of a substance.
cloud point analyser
An analysing instrument that is intended to determine the cloud point of a fluid.
communications controller
An electronic controller that is intended to act as a node in a communication network.
compressor unload valve actuator
A valve actuator that is operating a suction valve or clearance pocket valve on a reciprocating compressor, in order to have the compressor run at part-load or at no-load condition.
computer
A physical object that can store data and program(s) that operates on the data. A general purpose computer can be programmed to solve any reasonable problem expressed in logical and arithmetical terms.
concentric hole orifice plate
An orifice plate with a circular orifice that is coaxial with the conduit and is concentric to the conduit axis.
condensation dew point analyser
A dew point analyser that detects the first appearance of condense to determine a dew point.
conductivity cell
A detecting element or probe that is used with a conductivity meter to measure the conductivity of a liquid.
conductivity level transmitter
A transmitter that is producing a standardized output signal dependent of a received input signal from a conductivity meter.
conductivity meter
A detecting instrument that is used for measuring electrical conductivity in fluids.
conical concentric orifice plate
A concentric hole orifice plate of which the orifice is conical.
conical orifice hole
A hole where the wall surface, i.e. the boundary between the solid and the no-solid, is of a cylindrical nature and on the upstream side have a straight circular truncated conical nature.
continuous line recorder
A recording instrument that is capable of recording slowly changing measured signals/quantities.
control box
A terminal box that is used as accommodation for control function circuits.
control cable
A cable that is intended to be involved in some control function.
control circuit board
A transmitter mounted on an electronic circuit board intended to receive and encode one or more signals and produce signals to control handling units.
control element
A physical object that is an electronic or mechanical device that is built into a system in order to control the system's behaviour.
control system
A system intended to control the operation of a machine, unit or process.
controller
A regulator that operates automatically to affect a controlled variable by comparing the value of the controlled variable with the value of a reference variable in order to reduce the difference between them.
coplanar flange
An instrument process flange that is used for pressure transmitters.
coriolis mass flow meter
A mass flow meter that uses the Coriolis principle to measure a mass flow rate through the meter.
corrosion meter
A detecting instrument intended to measure, indicate and/or produce a signal which represents the rate or degree of corrosion.
corrosion probe
A detecting element that is a piece of suitable metal meant to corrode and give an indication of the corrosion rate.
coulometer
A detecting instrument for determining the amount of a substance released during electrolysis by measuring the electrical charge.
counter
A detecting instrument that counts, especially an electronic or mechanical device that automatically counts occurrences or repetitions of phenomena or events.
cpu socket
An interface card that is a socket or slot that interfaces between a computer's motherboard and the cpu itself.
current to current converter
A signal converter that is intended to convert one current signal to another current signal.
current to pressure converter
A signal converter that is intended to convert an analogue signal (4 - 20 mA) to a proportional linear pneumatic output signal.
current to voltage converter
A signal converter that is intended to convert a current input signal to a proportional voltage output signal.
cylindrcal concentric orifice plate
A concentric hole orifice plate of which the orifice is cylindrical.
cylindrical antenna
An antenna having a cylindrical shape.
dall tube
A flow sensor that is a restriction tube with a relatively short passage with smooth entry and exit.
dall tube flow meter
A differential pressure flow meter where the restriction consist in a dall tube that is a combination of a venturi tube and orifice plate.
densitometer
A detecting instrument that measures the degree of darkness in photographic or semitransparent material. The densitometer is basically a light source aimed at a photoelectric cell which determines the density of the sample from differences in the readings.
density analyser
An analysing instrument intended to determine the density of a substance.
detecting element
A physical object that is the primary element of a measuring chain which converts the input variable into a signal suitable for measurement.
detecting instrument
A process instrument that is intended to measure a physical quantity (IEV, IEC-770-1) and/or to indicate and/or to transmit a signal which represents a measured variable.
detector
A physical object that is an assembly of a sensing element and necessary ancillary devices making it able of detecting a state, e.g. pressure, temperature, or detect the presence of a selected substance, and produce a signal based on the detection.
detector base
An electrical socket that is designed for receiving a (smoke) detector.
dew point analyser
An analysing instrument intended to determine the dew point of a substance.
diaphragm
A physical object that is a flexible disk of metal (convoluted) or a membrane of resilient material that provides limited movement.
diaphragm actuator
An actuator that is pneumatically operated and uses a pressurized medium to provide movement of the diaphragm.
diaphragm casing
An enclosure or housing that is used for supporting a diaphragm and establishing one or two pressure chambers.
diaphragm type gauge
A pressure gauge that is utilizing a diaphragm as detecting element.
differential measuring instrument
A process instrument that is intended to measure the difference between the values of two quantities of the same kind existing at practically the same time.
differential pressure cell
A detecting element that produces a signal proportionately to the applied differential pressure.
differential pressure flow meter
A flow meter with a restriction placed in the flow line causes the velocity of the flowing fluid to change. The change of flow velocities causes changes in pressures between two measurement points which then is used to calculate the flow velocity.
differential pressure gauge
A gauge that is intended for measuring and indicating pressure differences.
differential pressure indicator
A pressure indicator that is indicating the difference between two fluid pressures applied to it.
differential pressure level transmitter
A level transmitter that is measuring liquid level by sensing pressure difference between two points, e.g. the hydrostatic pressure at the bottom of a tank to the atmosphere pressure.
differential pressure meter
A detecting instrument that is intended to measure and indicate and/or produce a signal which represents a measured differential pressure.
differential pressure regulator
A regulator that uses the differential pressure to control the valve trim and regulate the pressure in a process system.
differential pressure switch
A pilot switch intended to switch or give an on/off signal when the measured differential pressure has reached a preset value.
differential pressure transmitter
A pressure transmitter that is producing a standardized output signal dependent of a received pressure difference signal.
differential temperature switch
A pilot switch that is intended to measure and indicate and/or produce a signal which represents the measured differential temperature.
digital display
A display that gives the information in the form of characters (numbers or letters).
digital input circuit board
An input circuit board that is intended to receive and encode one or more electrical binary signal(s) to a computer interpretable format.
digital output circuit board
An output circuit board that is intended to decode and transmit one or more binary signals from a computer interpretable format to a digital output signal.
digital temperature indicator
A temperature indicator that is powered and is displaying the temperature in a digital way.
digital temperature indicator housing
A temperature indicator housing that is the static part of an analogue temperature indicator.
digital to analogue converter
A signal converter that is intended to convert a digital input signal into an analogue output signal.
dip tube level meter
A level meter monitoring liquid levels based on the hydrostatic pressure principle.
dipole antenna
An antenna most commonly made up by two equal halves, but may be of folded type.
direct operated pressur regulator
A pressure regulator that is using direct feed back of the outlet pressure to correct the valve trim position and maintain a constant outlet pressure independent of the flow.
disc recorder
A recording instrument that records data on a rotating recordable disc.
disk controller
An electronic controller that is intended to control a hard disk drive.
dispersive infra-red gas analyser
A gas analyser in which the absorption of a specific wavelength or IR radiation is measured by dispersing the IR radiation from a source through a prism, grating, or filter before passing it through the gas, and detecting this radiation by a broad band sensor.
displacer level switch
A level switch that is using a displacer that is suspended from a spring as the sensing element.
display
A physical object that is intended for presenting information.
domed rupture disc
A rupture disc with a domed shape.
doppler flow meter
An ultrasonic flow meter that uses the Doppler effect to measure a flow rate of a moving liquid or gas.
dot matrix printer
A printing machine (computer printer) with a print head that runs back and forth on the page and prints by impact, striking an ink-soaked cloth ribbon against the paper.
double acting actuator
An actuator that is able to operate in both directions.
double acting hydraulic piston actuator
A hydraulic piston actuator that is actuated by hydraulic fluid and is driven in both directions.
double acting pneumatic diaphragm actuator
A pneumatic diaphragm actuator that is actuated by low-pressure air and is driven in both directions.
double acting pneumatic piston actuator
A pneumatic piston actuator that is actuated by low-pressure air and is driven in two directions.
double chamber orifice fitting
An orifice plate fitting that has double chamber enabling removal of orifice plate from the meter tube without interrupting the flow in the pipeline.
dual solenoid actuator
A solenoid actuator that is operated by two solenoids.
dynamometer
A detecting instrument that is intended for measuring the brake horsepower of a prime mover or engine.
dynamometer ammeter
An ampere meter operating according to the dynamometric principle.
eccentric hole orifice plate
An orifice plate with an orifice that is circular and coaxial with the conduit, but eccentric to the conduit axis.
elbow flow meter
A differential pressure flow meter where the fluid passes through a pipe elbow. The pressure at the outside radius of the elbow increases due to centrifugal force.
electric signal transducer
A transducer for converting or transferring signals and in which at least one of the forms of signals is electric.
electric valve actuator
A valve actuator that is intended to be driven by electricity.
electrical density analyser
A density analyser that is measuring density and generating a standardized electrical output signal representing the measured density.
electrical differential pressure transmitter
A differential pressure transmitter that is producing a standardized electrical output signal dependent of a received pressure difference signal.
electrical flow transmitter
A flow transmitter that is measuring flow rate and generating a standardized electrical output signal representing the detected flow.
electrical level transmitter
A level transmitter measuring a level and generating a standardized electrical output signal representing the detected level.
electrical position transmitter
A position transmitter measuring position and generating a standardized electrical output signal representing the detected position.
electrical pressure transmitter
A pressure transmitter measuring pressure and generating a standardized electrical output signal representing the detected pressure.
electrical speed transmitter
A speed transmitter measuring speed and generating a standardized electrical output signal representing the detected speed.
electrical temperature transmitter
A temperature transmitter that is generating a standardized electrical output signal representing the received input signal from the temperature sensor.
electroacoustic transducer
A transducer that is capable of producing an acoustic signal based on an electric signal or vice versa.
electrodynamic instrument
An induction instrument that operates by the interaction of a current in a movable coil with current in one or more fixed coils.
electromagnetic flow meter
A velocity flow meter that is measuring flow rate of a conductive fluid running through a magnetic field by measuring the charge created when fluid interacting with the field.
electromagnetic flow meter body
An in-line instrument body that is intended for an electromagnetic flow meter.
electromagnetic flow transmitter
A flow transmitter that is specially designed to convert the signals from an electromagnetic flow meter into a standardized electrical output signal.
electromagnetic transducer
A transducer that is capable of producing an electric signal based on an electromagnetic signal or vice versa.
electromechanical transducer
A transducer that is capable of producing an electric signal based on electrical and mechanical parts working together or producing mechanical energy from an electric signal.
electronic circuit board
A physical object that comprises a printed circuit board with electronic components intended for receive, process/transform and transmit electrical signals.
electronic controller
A controller that uses in-built algorithms executed by electronic circuitry to perform its function.
electronic flow controller
An electronic controller that is intended to regulate flow direction and velocity.
electronic liquid level controller
An electronic controller that is intended to provide level monitoring and control.
electronic load cell
An electromechanical transducer that converts a force into a differential signal of a few millivolts that will require amplification.
electronic pressure controller
An electronic controller that is intended to regulate the pressure in as system.
electronic sensor
A detecting element (sensor) that is intended to measure an electrical or non-electrical quantity using electronic means.
electronic temperature controller
An electronic controller that is intended to control the temperature in as system.
epoxy-polyester-covered aluminium transmitter housing
A transmitter housing that is made of aluminium and covered by Epoxy-polyester.
erosion probe
A detecting element that is detecting accumulated erosion directly.
etolle straightener
A flow straightener consisting of eight radial vanes at equal angular spacing with a length equal to twice the diameter of the pipe. The vanes shall be as thin as possible but shall provide adequate strength.
ferrodynamic instrument
An induction instrument that operates by the interaction of a current in a movable coil with a current in one or more fixed coils and which incorporates soft ferromagnetic material in the magnetic circuit.
fill fluid
A fluid contained within a device for some purpose, e.g. dampening.
filled thermal element
A closed metal bulb or bellow, containing a temperature responsive fluid e.g. that is used to open or close valves in response to temperature changes.
fire detector
A detector that is intended to detect a fire.
fixed mounted instrument
A process instrument that is designed to be permanently mounted and which is intended to be connected to (an) external circuit(s) by means of permanently installed conductors.
flame detector
A detector that is intended to sense a flame.
flame ionisation analyser
An analysing instrument that is using the flame ionisation principle for analysing hydro carbons, also called TOC and UHC.
flange mounted actuator
An actuator that is equipped with a flange for mounting on to the driven equipment.
flanged thermowell
A thermowell that is provided with flange for pressure-tight attachment to a vessel or pipe.
flash point analyser
An analysing instrument intended to determine the flash point of a substance.
flat rupture disc
A rupture disc that has a flat shape.
float
A physical object that is intended to float on the surface of a liquid e.g. for measuring or actuating a valve controlling the liquid level.
float and rod switch
A level switch that is operated by a rod connected to a floating ball.
float collar
A variable area flow meter element that is a specially formed float for use in variable area flow meters and variable area flow indicators that has a collar or flange on the top.
float switch
A level switch that is operated by a float.
float tank gauge
A tank gauge that is using a float to display the liquid level.
flow computer
A computer that is specially designed and programme to calculate flow and to correct for external influence.
flow controller
A controller that is dedicated to control a flow rate.
flow detector
A detector that is intended to detect whether a fluid flow exists.
flow gauge
A gauge intended to indicate a liquid or gas flow.
flow indicator
An indicating instrument that is intended to give a visual indication of mass or volume per time unit of a fluid passing through an open or closed conduit.
flow limiter
A flow regulator that normally use the differential pressure across an orifice to control a valve trim and limit the flow.
flow meter
A detecting instrument intended to measure and indicate flow rate and/or produce a signal which represents the measured flow rate.
flow meter rotor
A rotor that constitute an internal rotating part of a turbine or positive displacement flow meter.
flow nozzle meter
A differential pressure flow meter that utilizes a flow nozzle with a smooth guided entry and a sharp exit place in the pipe to change the flow field and create a pressure drop that is used to calculate the flow velocity.
flow regulator
A regulator that normally use the differential pressure principle across an orifice to control the valve trim and regulate flow.
flow scale
An indicator scale that is graduated for indication of volume flow values.
flow sensor
A detecting element that is producing a signal that is proportional to a flow rate.
flow sight glass
A sight glass mounted on a pipe or vessel to see inside for flow inspection.
flow straightener
A physical object that is inserted into a pipe intended to smooth out turbulent and transitional flows and help meters measure more accurately.
flow switch
A functional switch that is intended to give a signal when the flow have reached a preset value.
flow transmitter
A transmitter that is producing a standardized output signal dependent of a received input signal from a flow sensor.
flow turbine transmitter
A flow transmitter that is producing a standardized electrical output signal based on the input signal from a turbine flow meter.
flowmeter oscillating piston
A flow meter rotor that is a piston that oscillates within the measuring chamber of a positive displacement meter.
flowmeter tube protection cover
A protection cover that protects the tubes of a mass flow meter.
flume flow meter
An open channel flow meter that utilizes a special shaped flow section (venturi flume) to measure the flow rate.
fragmenting rupturing disc
A rupture disc that is designed to break into fragments if its calibrated bursting pressure is exceeded.
frequency to current converter
A signal converter that is intended to convert a frequency or rotational speed input signal into a 0 - 20 mA or 4 - 20 mA current output signal.
frequency to voltage converter
A signal converter that is intended to convert a frequency or rotational speed input signal into a voltage output signal.
full-turn actuator
An actuator that has the capability of turning 360 degrees or more.
functional switch
A regulator used to switch on or off or vary the supply of electric energy to an electrical installation or parts of it for normal operating purposes.
gamma detector
A detector that is intended to measure a level of gamma radiation.
gamma radiation level transmitter
A level transmitter that transforms the signals from a gamma radiation type level sensor into a standardized electrical output signal.
gas analyser
An analysing instrument that analyses the composition of a gaseous mixture with two or more components.
gas chromatograph
A chromatograph where gas is injected directly into one or more separation columns.
gas density analyser
A density analyser that is intended for analysing the density of gas and vapour.
gas detector
A detector that is intended to sense the presence of a specified concentration of a gas.
gas liquid chromatograph
A chromatograph where a liquid sample is injected and evaporated and subsequently carried to one or more separation columns.
gauge
A detecting instrument that is used for measuring or testing.
gauge glass
A level gauge that is a transparent tube or glass intended to show locally the liquid level of a tank or vessel.
gauge pressure transmitter
A pressure transmitter that is generating a standardized electrical output signal representing the pressure detected by a pressure gauge.
gear positive displacement flow meter
A positive displacement flow meter that is using two gear wheels fitting in a meter body to measure flow rate.
gear wheel rotor
A flow meter rotor that consists of two mating gear wheels supported on separate shafts.
grid antenna
An antenna having the shape of a grid of parallel bars.
gyro stabilised antenna
A reflector antenna for floating structures, normally used for satellite based applications.
h2s analyser
An analysing instrument intended to analyse the concentration of H2S in a fluid stream.
h2s detector
A gas detector that is intended to detect the presence and concentration of H2S gas.
hardness analyser
An analysing instrument intended to determine the hardness of a solid compound.
hastelloy c-276 diaphragm
A chemical seal diaphragm that is made of Hastelloy C-276 material.
hc gas infrared point detector
An infrared detecting element that is intended for detecting Hydrocarbon Gas.
heat detector
A detector that is intended to detect heat.
heat detector for surface mounting
A heat detector that is intended to be mounted onto a surface in such a way that it protrudes into the volume of which it is intended to detect heat.
hf antenna
An antenna that is designed for radiating or receiving electromagnetic waves in the high frequency range (HF = 3 - 30 MHz).
hf in air detector
A gas detector that is intended to detect the presence of hydrogen fluoride (fluoric acid) in air.
hour counter
A counter that is intended to count a number or amount of hours.
hours run meter
A detecting instrument that records and displays the actual run time of an engine or machine in hours.
humidity detector
A detector that is intended to measure and indicate ambient humidity.
humidity sensor
A detecting element that is intended to produce a signal proportional to the determined humidity.
hydraulic actuator
An actuator intended to be operated by hydraulic power.
hydraulic controller
A controller that is designed or can be programmed to operate and control hydraulic operated systems.
hydraulic piston actuator
A piston actuator that is operated by use of hydraulic energy.
hydraulic valve actuator
A hydraulic actuator that is designed to operate a valve.
hydrocarbons in water detector
A detector that is intended to detect hydrocarbons in water.
in-line instrument body
An instrument body that is part of an instrument installed in a pipeline in such a manner that the centreline between its end connections coincides with the centreline of the adjacent pipeline components.
in-line mounted instrument
A process instrument that is installed in a pipeline in such a manner that the centreline between its end connections coincides with the centreline between the adjacent pipeline components.
in-line ultrasonic flow meter
An ultrasonic flow meter that is mounted in-line with a pipeline.
inclinometer
A detecting instrument that indicates/reports the angle of an object with respect to gravity.
indicating instrument
A physical object that is intended to display the value or the status of a condition.
indicator glass
A sight glass that is a glass intended to cover, protect or enclose an indicator.
indicator housing
An instrument housing that is the static part of an indicator.
indicator scale
A physical object that is a graduated scale intended for indicating a value.
induction instrument
A process instrument that operates by the interaction of the alternating magnetic field(s) of (a) fixed electro-magnet(s) due to currents which they induce in (a) movable conductive element(s).
infrared analyser
An analysing instrument that applies the principle of infrared analysis.
infrared beam
A physical object that is a beam of infrared light.
infrared detecting element
A detecting element that react on infrared light.
infrared flame detector
A flame detector that is based on detection of infrared radiation.
infrared gas detector
A gas detector that is using an infrared (IR) detection method based on absorption of IR radiation as it passes through a volume of gas.
infrared light source
A light source that generates an infrared light beam.
infrared receiver
A signal receiver that is capable of picking up infrared signals within line-of-sight and turn them into electrical impulses.
ink jet recorder
A recording instrument that is using an ink-jet printing head to record data on a chart.
input - output circuit board
An interface card with electronic components that is intended to receive/transmit and encode/decode one or more analogue or binary electrical signals to/from a computer interpretable format.
input circuit board
An input - output circuit board containing electronic components intended to receive and encode one or more signals to a computer interpretable format.
insert type rupture disc holder
A rupture disk holder that bolts between standard ANSI pipe flanges and fits within the bolt circle.
instrument body
A housing that is part of an instrument for physical connection to the process.
instrument body liner
A liner that is a separate sleeve placed within e.g. an instrument body to form a more durable surface to withstand aggressive matters or abrasive particles.
instrument dial
A physical object that is a graduated face or plate which can be positioned relative to a pointer to indicate a position or measurement. The positioning may be obtained by rotating the pointer or the dial.
instrument housing
A housing (enclosure) that is the static part of an instrument.
instrument level flange
An instrument process flange that permits direct process mounting to a piping flange.
instrument mounting bracket
A bracket that is intended for supporting an instrument.
instrument mounting bracket for 2 ins pipe
A pipe mounting bracket that is intended for mounting an instrument on a 2" pipe.
instrument panel
A physical object that may contain instruments, controlling and/or signalling devices arranged in a suitable manner.
instrument process connection
A mechanical connection where a process instrument or related device is connected to another object containing the process medium.
instrument process flange
A pipe flange that is intended to connect an instrument sensor to the process and also accommodate vent and drain.
instrument rack
A support that is a standardized system for mounting instrument modules and/or other electronic modules.
instrument with limit switches
A detecting instrument in which the moving element operates switches at certain predetermined positions or values.
instrument with locking device
A detecting instrument in which a device can lock the moving element in the position where it stands at a given time.
instrument with optical index
An indicating instrument in which the indications are given by the displacement of an optical index over a scale which may be a part of the instrument or may be separate from it.
instrument with suppressed zero
A process instrument that does not indicate the value of the measurand when it is lower in absolute value to a certain limit.
integral orifice paddle
A handle and name plate that is forming an integral part of an orifice plate with paddle.
integrating meter
A detecting instrument that measures the time integral of the named quantity.
integrating power meter
An integrating meter that is measuring the time integral of electrical power (kWh meter).
integrating reactive power meter
An integrating meter that is measuring the time integral of reactive electrical power.
interface card
A distribution board (network card) that is intended for communication between systems, to part of a system or to a computer network.
internal power supply
A power supply that is an arrangement for delivering power to internal functions
intrinsically safe barrier
A current limiter that limits the power (energy) which can be delivered from a safe area into a hazardous area.
ionisation flame detector
A flame detector intended to detect a flame by measuring a degree of ionisation.
ionization smoke detector
A smoke detector that is using an ionization chamber and a source of ionizing radiation (Americium-241) to detect smoke.
joystick
A lever or control arm, consisting of a vertical handle that can be moved freely in two directions, used to transmit its angle in two dimensions and give input to a computer or to a device controlled by a computer.
keyboard
A control panel with an array of systematically arranged (piano like) keys by which a machine is operated or by which an instrument can be played on.
knock sensor
A detecting element that is intended to detect engine knock in a combustion engine.
laser printer
A printing machine (computer printer) with a xerographic printing process utilizing a laser for direct scanning across the printer drum.
leak detector
A detector that is intended to detect leaks.
led display
A display that is presenting the information by panel mounted light-emitting diodes.
level controller
A controller that is dedicated to control a level.
level detector
A detector that is intended to detect level.
level float transmitter
A level transmitter that is converting the signals from a level meter using a float and magnetic follower into an electrical output signal.
level gauge
A gauge that is intended to display a representation of a measured level.
level indicator
An indicating instrument that is intended to give a visual indication of the level of a substance behaving like a fluid in a tank or storing device.
level meter
A detecting instrument that is used to monitor liquid levels.
level regulator
A regulator that is intended to detect a liquid level and adjust the valve trim in order to maintain a predetermined level.
level sensor
A detecting element that is intended to determine a level.
level switch
A functional switch that is intended to give an on/off signal when particulate material or fluid level have reached a preset value.
level transmitter
A transmitter that is producing a standardized continuous output signal dependent of a received input signal from a level sensor.
lever
A physical object which is a bar used for lifting or prying, rotating about a fixed axis or fulcrum which lifts or sustains weight at one point by means of applied force at a second point.
light source
A physical object that is serving as a source of illumination.
light-emitting diode
A (semiconductor) diode that radiates light in the visible region. Used in alphanumeric displays and as an indicator or warning lamp.
line voltage detector
A detector that is intended to show whether or not a conductive component is live.
linear temperature indicator
A temperature indicator that use a linear indicator that is powered.
lined rupture disc
A rupture disc that is lined or coated with for example fluorpolymer to protect it from contact with corrosive media.
liquid crystal display
A display that is made up of any number of colour or monochrome pixels arrayed in front of a light source or reflector.
liquid density analyser
A density analyser that is intended for analysing the density of liquid.
log periodic antenna
A wideband antenna used in the HF, VHF and UHF bands, made up of a number of dipoles mounted along a straight line.
loudspeaker
An electroacoustic transducer that converts an electric signal into sound.
magnetic actuator
An actuator where the force is provided by magnetic forces.
magnetic inductive pickoff
An electronic sensor with a simple coil and bobbin arrangement which produces an electric pulse at a passage of a magnet. (Used in turbine flow meters.)
magnetic level gauge
A level gauge that use a float containing a magnet to transfer information about its position to a indicator rail with white and red flaps mounted on the outside of the tube.
magnetic level meter
A level meter that is intended to measure and indicate and/or produce a signal which represents the detected level.
magnetic reluctance pickoff
An electronic sensor with a coil and bobbin arrangement which produces an electric pulse at a passage of a material with some magnetic permeability. (Used in turbine flow meters.)
magnetometer
A detecting instrument that is intended to measure the value of a magnetic flux density in a given direction.
manometer
A pressure gauge that applies the principle of pressure difference.
manual loader
A mechanical controller that is dedicated to manually manipulate a final control device.
mass flow meter
A flow meter that is intended to measure mass flow and can be configured to measure either liquid or gas.
mass flow meter body
An in-line instrument body that is intended for a mass flow meter.
mass flow meter tube
A meter tube that is designed to be a vibrating tube forming part of a mass flow meter.
mass flow transmitter
A flow transmitter that is specially designed to convert the signal from a mass flow meter into a standardized output signal.
mechanical controller
A controller that uses in-built physical components to perform its function.
mechanical positioner
A mechanical controller that is intended to position a given item in accordance with a received input signal.
memory chip
An integrated circuit that is intended to store computerized information.
mercaptan analyser
A gas analyser intended to determine the mercaptan concentration in a fluid.
meter run
A physical object that is intended to ensure stable flow for the provision of flow measurement and includes pipe(s) and a flow element/flow conditioner.
meter tube
A pipe section that is a straight or curved pipe with no connections used within a mass flow meter, also known as Coriolis flow meter.
mf antenna
An antenna capable of radiating or receiving electromagnetic waves in the medium frequency area (MF = 0,3 - 3 MHz).
micro switch
A pilot switch operated by very small movements of a lever, the circuit being made or broken or closed by spring-loaded contacts.
microwave transducer
An electroacoustic transducer that utilize microwaves to accepts information in the form of a physical or chemical variable (its input variable) and converts it into an output variable of the same or another nature, according to a definite law.
mist detector
A detector that is intended to detect mist.
modulated carrier frequency pickoff
An electronic sensor with a ferritic bobbin and core with a coil around it that generate pulses from the passing of blades of a turbine flow meter rotor.
moisture detector
A detector that is intended to detect moisture.
moisture meter
A detecting instrument, usually a hand-held or portable instrument consisting of a digital display and a moisture sensing element that is intended to measure and indicate measured moisture.
moisture sensing element
A detecting element intended to determine moisture.
monel diaphragm
A chemical seal diaphragm that is made of Monel.
motherboard
An electronic circuit board that is the main printed circuit board of e.g. a computer that contains the microprocessor, main memory, bus lines and edge connectors to accommodate other boards in the system.
moving-iron instrument
An induction instrument comprising a moveable piece of soft magnetic material which is actuated by a magnetic field created either by a current in a fixed coil or by one (or more) fixed piece(s) of soft magnetic material, magnetized by a current in the fixed coil.
moving-magnet instrument
An induction instrument that operates by the interaction of the magnetic field of a movable permanent magnet with a current in a fixed coil.
moving-scale instrument
An indicating instrument in which the scale moves relative to a fixed index.
multi point indicator
An indicating instrument that is intended to indicate more than one property at the same time.
multi point recorder
A recording instrument that is able to record more than one variable at the same time.
multimeter
A detecting instrument that is a hand-held multi-range multi-function measuring instrument intended for measuring voltage, current and sometimes other electrical quantities such as resistance.
multiphase meter
A flow meter for the metering a mixture of two or more fluid phases.
multiple pitot tube flow meter
A pitot tube flow meter that utilizes multiple pitot tubes.
multiplexor
A transmitter that is an electronic circuit that is a communication device that multiplexes (combines) several signals for transmission over a single medium.
multiport pitot tube
A pitot tube that has multiple impact pressure ports normal to the flow direction on the exterior tube.
negative resistance temperature element
A resistance temperature element of which the electrical resistance decreases with increasing temperature.
non wetted transducer
A transducer that is designed not to be in contact with the process medium.
non-dispersive infra-red gas analyser
A gas analyser in which the absorption of a specific wavelength of IR radiation is measured by radiating broadband IR through the gas and selecting a specific band by using a wavelength selective sensor as detector.
nox analyser
An analysing instrument intended to determine the nitrogen oxide concentration in gaseous compound.
nuclear magnetic resonance spectroscopy analyser
An analysing instrument often used in physical and analytical chemistry for the identification of substances.
nucleonic level switch
A level switch that uses a focused beam of radiation directed at a detector to sense the presence or absence of the beam.
nucleonic level transmitter
A level transmitter that is producing a standardized electrical output signal based on the input signal from a nucleonic level detector.
nutating disk
A flow meter rotor that is a radially slotted disk with an integral ball bearing and an axial pin. The end of the axial pin, which moves in a circular motion as the disk is making a nutating motion, drives a cam.
nutating disk flow meter
A positive displacement flow meter that uses a disk which fits closely in a measuring chamber. As the fluid enters one side of the partition and leaves through the other side, it makes the disk to wobble. The number of revolutions made by a small shaft attached to the disk will indicate the volume of flow.
octane number analyser
An analysing instrument intended to determine the octane number of gasoline or diesel oil.
off-line analyser
An analysing instrument intended for measuring on samples and not to be directly coupled to a process for continuous measuring.
offset reflector antenna
An antenna where the application and construction is similar to the parabolic reflector antenna, but the reflector is shaped so that the focal point has an offset location when compared to the parabolic type.
oil in water analyser
An analysing instrument intended to determine the oil content in water.
oil mist detector
A mist detector that is intended to detect oil mist.
on-line analyser
An analysing instrument intended to be directly coupled to a process for continuous measuring.
on-line process gas chromatograph
A gas chromatograph that is able to measure the concentration of one or several components of a chemical mixture repetitively, by regularly sampling the process mixture and transmitting the resulting information for control purposes.
one-piece paddle orifice plate
A paddle orifice plate that is made from one piece.
open channel flow meter
A flow meter utilizing an open channel where the cross section area of flow is detected and multiplied by the cross-sectional average velocity of the channel flow.
operator interface panel
A control panel that is intended for connection/communication between systems or parts of a system.
optical smoke detector
A smoke detector that is using a light source and a sensor to detect smoke.
orifice and tapered plug flow meter
A variable area flow meter that utilize an upright cylindrical chamber with a fixed orifice and a float inside.
orifice flange
A pipe flange that is provided with taps for instrument connection.
orifice handle
A handle that is a rectangular plate forming part of an assembled paddle orifice plate.
orifice meter run
An orifice plate flow meter that is an assembly of an orifice flange complete with a machined inlet and an outlet pipe section in order to provide the orifice with sufficient straight length and smooth piping.
orifice meter tube
A physical object that is an assembly of an orifice fitting, a length of pipe upstream of the fitting and a corresponding length of pipe downstream of the fitting. There is also, in most cases, a flow conditioner upstream of the orifice as well.
orifice plate
A physical object that is a thin plate with a specified hole in the middle. It is usually placed in a pipe to measure the rate of fluid flow.
orifice plate fitting
A physical object that is a component intended to fixate a universal orifice plate to a pipeline.
orifice plate flow meter
A differential pressure flow meter that uses an orifice plate as the restriction body.
orifice plate flowmeter assembly
A physical object that is an assembly of an orifice plate, carrier rings and flanges as its main components.
orifice plate for assembeled paddle orifice plates
An orifice plate that has a circular outside design intended to form part of an assembled paddle orifice plate.
orifice plate holder
A physical object that is made to hold a universal orifice plate in place and to be mounted between ring-type joint orifice flanges.
orifice plate holder with hold-down screws
An orifice plate holder in which the universal orifice plate is held in position using hold-down screws.
orifice plate holder with integral plate seal
An orifice plate holder that is equipped with an integral plate seal.
orifice plate holder with snap-ring clip
An orifice plate holder in which the universal orifice plate is held in position using spring clips.
orifice plate seal
A seal ring that is intended to provide sealing around the periphery of an orifice plate when mounted in an orifice plate holder or fitting.
oscillating piston flow meter
A positive displacement flow meter utilizing a piston closely fitted into a cylindrical chamber with a pair of slots that are progressively uncovered as the pressure differential makes the piston oscillate/spin around a control roller in the centre of the chamber.
oscillograph
A recording instrument that is intended to record, in the form of a permanent trace, instantaneous values of measured quantities.
output circuit board
An input - output circuit board that is intended to decode and transmit one or more electrical signals from a computer interpretable format to an output signal.
oxygen content analyser
An analysing instrument intended to determine the oxygen concentration in a fluid.
paddle orifice plate
An orifice plate with an integrated paddle or handle to facilitate installation between flanges.
paddle wheel flow meter
A positive displacement flow meter which uses a pair of eccentrically mounted drums that are supported on geared spindles perpendicular to the flow path, not parallel as in traditional turbine-type flow meters.
panel antenna
An antenna where the array of dipoles normally are made for the UHF or VHF band.
panel mounted instrument
A process instrument that has a special shape intended to be mounted on a flat rigid surface.
panel mounting bracket
An instrument mounting bracket that is a support structure for mounting an instrument on a panel or wall.
parabolic reflector antenna
An antenna that is made up by a reflector with the shape of a rotational paraboloid, and a feedhorn located in the focal point of the reflector.
parametric oxygen analyser
A gas analyser making use of the magnetic property of oxygen to measure its concentration.
part-turn actuator
An actuator that has the capability of turning less than 360 degrees.
pen recorder
A recording instrument that is using a pen supplied with ink to record data on a chart.
permanent-magnetic moving-coil instrument
An induction instrument that operates by the interaction of a current in a movable coil within the field of a fixed permanent magnet.
personal computer
A computer built around a microprocessor for use by an individual, as in an office or at home or school.
ph analyser
An analysing instrument intended to measure, indicate and/or produce a signal which represents the measured alkalinity / acidity in a fluid or matter.
phase sequence indicator
An indicating instrument that is intended to indicate on a polyphase system, the sequence in which the instantaneous voltage of the phase conductors reach their maximum value.
photoelectric transducer
A transducer that is a device whose electric characteristics vary when light is incident upon it.
pig detector
A detector that is intended to detect a pig inside the pipeline or pig receiver.
pig indicator
An indicating instrument that is showing when/if the pig is inside pig receiver.
pilot air operated solenoid actuator
A solenoid actuator in which operation is triggered by external supply of pilot air.
pilot operated regulator
A pressure regulator where a diaphragm responds quickly to the downstream pressure, causing an immediate correction of the main valve plug position.
pipe mounting bracket
An instrument mounting bracket that is a support structure for mounting an instrument on a pipe.
piston actuator
An actuator intended to operate by displacement of a piston by the use of pneumatic or hydraulic energy.
pitot tube
A fluid sensor producing a differential pressure by means of two straight tubes mounted in line with the direction of the fluid movement. One tube is open-ended and measures the stagnation pressure of the fluid. The other tube is closed in front but has openings along the tube to measure the static pressure of the fluid.
pitot tube flow meter
A differential pressure flow meter utilizing a pitot tube (a probe with an open tip) that is inserted into the flow field.
pna-meter
An analysing instrument intended to measure and indicate and/or produce a signal which represents the measured parafinic and naphtenic and aromatic content of a fluid.
pneumatic actuator
An actuator that is intended to be operated by pneumatic power.
pneumatic amplifier
An amplifier that increases the power of a pneumatic signal.
pneumatic controller
A mechanical controller that is using pneumatic components to execute its function.
pneumatic density analyser
A density analyser measuring density and generating a standardized pneumatic output signal representing the measured density.
pneumatic diaphragm actuator
A diaphragm actuator that is operated using low-pressure air supply.
pneumatic differential pressure transmitter
A differential pressure transmitter that is producing a standardized pneumatic output signal dependent of a received pressure difference signal.
pneumatic flow controller
A pneumatic controller that is intended to control flow rate.
pneumatic flow transmitter
A flow transmitter generating a pneumatic pressure signal representing the detected flow rate.
pneumatic indicator
A detecting instrument that is intended for activating and read pneumatic piezometers, total pressure cells and settlement cells.
pneumatic level controller
A pneumatic controller that is intended to control a liquid level.
pneumatic level transmitter
A level transmitter generating a pneumatic pressure signal representing the detected level.
pneumatic piston actuator
A piston actuator that is operated by compressed air.
pneumatic position transmitter
A position transmitter generating a pneumatic pressure signal representing the measured or detected position.
pneumatic pressure controller
A pressure controller that is intended to control the pressure in a system.
pneumatic pressure transmitter
A pressure transmitter generating a pneumatic pressure signal representing the detected pressure.
pneumatic relay
A relay that is pneumatically operated and which changes status or breaks another pneumatic circuit.
pneumatic speed transmitter
A speed transmitter generating a pneumatic pressure signal representing the detected speed.
pneumatic temperature controller
A pneumatic controller that is intended to control the temperature of a system.
pneumatic temperature transmitter
A temperature transmitter generating a pneumatic pressure signal representing the detected temperature.
pointer instrument
An indicating instrument in which the index is a pointer moving over a fixed scale.
polarity indicator
An indicating instrument that is intended to indicate the polarity of one conductor with reference to another.
position detector
A detector that is intended to detect a position.
position indicator
An indicating instrument that is intended to indicate the position of an object.
position transducer
A transducer that is producing a signal representing the measured position.
position transmitter
A transmitter that is producing a standardized output signal dependent of a received input signal from a position detector.
positive displacement flow meter
A flow meter that measures the volumetric flow rate of a liquid or gas by separating the flow stream into known volumes and counting them over time.
positive displacement flow meter body
An in-line instrument body that is intended for a positive displacement flow meter.
positive displacement flow transmitter
A flow transmitter specially designed to convert the signal from a positive displacement flow meter into a standardized electrical output signal.
positive resistance temperature element
A resistance temperature element that has a positive temperature coefficient which means that the electrical resistance increases with increasing temperature.
pour point analyser
An analysing instrument intended to determine the pour point of a fluid, i.e. the lowest temperature at which an oil or other liquid will pour under given conditions.
power supply
A physical object for delivering available power from a source.
power supply card
A power supply unit that is an internal power supply arranged on an electronic circuit board.
pressure controller
A controller that is dedicated to control a pressure.
pressure element
A detecting element intended to sense pressure.
pressure gauge
A gauge intended to measure and display a representation of a measured pressure.
pressure indicator
An indicating instrument that is intended to give a visual indication of the pressure in a pre defined process segment.
pressure meter
A detecting instrument, usually a hand-held or portable instrument consisting of a digital display and a pressure sensing element (pressure transducer), that is intended to measure and indicate a measured pressure.
pressure regulator
A regulator that is controlling/regulating the pressure in a system.
pressure sensor body
An instrument body that is intended for covering and protection of a pressure sensor.
pressure sensor module
A physical object that is an assembly of a pressure sensor and a pressure sensor body.
pressure switch
A functional switch that (usually) turns an electrical circuit on or off when the pressure level reaches a preset value.
pressure to current converter
A signal converter that is intended to convert a pressure input signal to DC output signal.
pressure to voltage converter
A signal converter that is intended to convert a pressure input signal into a voltage output signal.
pressure transmitter
A transmitter that is producing a standardized output signal dependent of a received input signal from a pressure element.
printing machine
A physical object that produces characters or graphic symbols on paper or other medium.
printing recorder
A recording instrument that produces characters or graphic symbols on paper or other medium.
probe
A detecting element that is a device for gathering information.
probe housing
An instrument housing that is intended for support and protecting a probe (detecting element).
process connection fill fluid
A fill fluid that is used to make contact between an internal element and a membrane or a sample.
process connector
A connector for process connections, i.e. between a machine and the process piping.
process control system
A control system that has the capability to control, monitor, regulate and measure processes.
process instrument
A physical object that detects an aspect of something; records, modifies and/or displays such an aspect or performs a combination of these activities.
programmable logic controller
A controller that is programmable.
proximity probe
A detecting element that is intended to sense proximity.
proximity switch
A position switch that is operated without mechanical contact with the moving part.
pt100 temperature element
A resistance temperature element made of platinum that has the resistance of 100 ohm at 0 deg. Celsius.
pt100 temperature transmitter
An electrical temperature transmitter that is intended to convert a PT100 temperature element signal into a standardized electrical output signal.
pulse counter
A counter that is intended to count a number or amount of pulses.
push button
A manual control switch that is intended to switch when you push or touch the button.
quarter circle orifice hole
A hole where the wall surface, i.e. the boundary between the solid and the no-solid, is of a cylindrical nature and on the upstream edge have the form of a quarter circle.
quarter circle orifice plate
An orifice plate with an orifice that has the shape of a quarter circle.
quarter-circle concentric orifice plate
A concentric hole orifice plate of which the orifice is a quarter of the circumference of a circle.
radar level transmitter
A level transmitter that is producing a standardized electrical output signal based on the input signal from a radar type level sensor.
radar type tank level gauge
A tank gauge intended to measure a liquid level indirectly by measuring the distance between the instrument and a liquid level employing frequency modulated continuous waves.
radial probe
A detecting element that is intended to detect radial displacement.
radioactive level transmitter
A level transmitter that is producing a standardized electrical output signal based on the input signal from radioactive level measurements.
radioactive switch
A pilot switch that uses absorption of gamma radiation from a radioactive isotope to monitor e.g. an area.
rail mounted temperature transmitters
An electrical temperature transmitter that is intended for mounting in a rail mounted housing.
receiver card
An interface card that is intended for receipt of information.
recording controller
A recording instrument that is intended to record controller events.
recording instrument
A process instrument that records values represented by the input signal(s).
rectangular venturi
A venturi that has a cross-sectional area with a rectangular shape.
refractive index analyser
An analysing instrument intended to determine the refractive index for a medium.
regulator
A physical object that has the function of maintaining a designated characteristic, e.g. a quantity or a predetermined level.
relative density gas analyser
A density analyser that is intended to determine the density of a gas relative to another gas.
relay card
An electronic circuit board with relays installed on it.
relayed speed governor
A speed governor that needs amplification and relays its signals to a pilot valve, servomotor or differently in order to move the control valve(s).
remote-operated control unit
A process control system that can be operated in remote.
resistance temperature element
A temperature sensing element that operate on the principle of changes in electrical resistance of pure metals (sintered semiconductor material) and are characterized by an almost linear positive change in resistance with temperature.
resistance temperature indicator
A temperature indicator that is powered and uses a resistance element as sensor.
resistance to current converter
A signal converter that is intended to convert a measured resistance into a current signal.
restriction orifice plate
An orifice plate that is intended for use as a restrictor.
return actuator
An actuator that after operation, when the trigger signal stops, will return to its original position.
reverse buckling rupture disc
A rupture disc that is designed to buckle in the reverse direction of the domed shape of the disc and open along a pre-weakened circular score line on the down-stream side of the disc.
rotameter flow meter
A variable area flow meter which consists of a tapered tube of glass with a float inside that is pushed up by flow and pulled down by gravity.
rotational speed sensor
A detecting element that is intended to sense rotational speed.
rupture disc
A physical object that is a pressure relieving device designed to burst at a calibrated pressure to prevent pressure in systems or vessels from reaching unsafe levels.
rupture disc assembly
A physical object that is an assembly of a rupture disc and rupture disc holder.
rupture disc gasket
A gasket that is intended to seal between the holders and the rupture disc in a rupture disc assembly.
rupture disc handle
A handle that is a rectangular plate forming part of a rupture disc.
rupture disc holder
A physical object that is made to hold a rupture disc in place, consisting of an inlet holder ring and an outlet holder ring.
rupture disc holder ring
A physical object that is a ring shaped plane ring with a seat for the rupture disc to ensure a metal-to-metal leak-tight seal between the rupture disc and the holder.
salinity sensor
A detecting element that is intended to determine salinity.
salinometer
A detecting instrument for measuring the amount of salt in a solution.
sampler
A physical object intended to be used to collect and contain representative specimens or selections.
sampling tube
A sampler consisting of a tube or cylinder with remote-operated valves for collection of liquid samples.
sand detection probe
A detecting element that is intended for detecting particles of sand.
sand detector
A detector that is intended to detect sand in a liquid.
screwed thermowell
A thermowell that is provided with screwed process connection (external threads for pressure-tight attachment to a vessel or pipe).
segmental orifice hole
A hole where the wall surface, i.e. the boundary between the solid and the no-solid, has the form of a circle segment.
segmental orifice plate
An orifice plate with an orifice that has the form of a segment of a circle.
segmental orifice plate for dirty gas
A segmental orifice plate that is in the form of a segment of a circle, the cord of which is vertical. The hole is tangential to the side of the conduit.
segmental orifice plate for dirty liquid
A segmental orifice plate that is in the form of a segment of a circle, the cord of which is horizontal. The hole is tangential to the bottom of the conduit.
segmental wedge flow meter
A differential pressure flow meter that uses a wedge-shaped segment that is inserted perpendicularly into one side of the pipe while the other side remains unrestricted.
seismic probe
A detecting element for detecting shock waves set off by an explosion or other seismic sources and reflected by underground rock formations.
servo tank gauge
A tank gauge that is intended to intermittently lower a displacer to measure a liquid level, bottom level, interface level or density.
sight flow indicator
An indicating instrument that is a transparent flow gauge indicating whether there is a flow or not.
sight glass
A physical object that is transparent and intended for viewing a vessel or piping system interior.
signal converter
An electric signal transducer that is intended to convert one type of standardized transmission signal into another.
signal receiver
A physical object that is capable of receiving a signal and where the signal can be stored, recorded or converted into a useful form.
single acting actuator
An actuator that is able to operate in one direction only.
single acting hydraulic piston actuator
A hydraulic piston actuator that is actuated by hydraulic fluid and is driven in one direction only.
single acting pneumatic diaphragm actuator
A pneumatic diaphragm actuator that is actuated by low-pressure air and is driven in one direction only.
single acting pneumatic piston actuator
A pneumatic piston actuator that is actuated by low-pressure air and is driven in one direction only.
single chamber orifice fitting
An orifice plate fitting that has one chamber only.
single pen recorder
A pen recorder that is equipped with only one pen.
single solenoid actuator
A solenoid actuator that is operated by one solenoid.
sliding vane
A flow meter rotor that that consists of one or several retractable vanes radially mounted on a rotor.
slotted lined rupture disc
A conventional rupture disc made up of two or more layers, one of which is slit or slotted so as to reduce its strength and to control the bursting pressure of the rupture disc; may be flat or domed.
smoke detector
A detector that is intended to sense smoke.
socket weld thermowell
A thermowell that is provided with a socket-head or rim intended for being welded to a vessel or pipe.
solenoid actuator
An actuator that is utilizing a continuous duty linear solenoid to convert electrical energy into mechanical power via a plunger with an axial stroke in either a push or pull action.
solid electrolyte oxygen analyser
An oxygen content analyser using the electrochemical behaviour of a solid, e.g. zirconia, at high temperature to determine the oxygen content of a fluid.
solid forged flanged thermowell
A flanged thermowell where the flange is forged in one piece with the shank/stem.
span adjustment device
A physical object that is intended for adjustment of the measuring range or operating range of an instrument.
speed governor
A controller that is intended to monitor and adjust the rotational speed of a machine or an engine.
speed meter
A detecting instrument that is intended to measure the upload and download speed of an internet connection.
speed transmitter
A transmitter that is producing a standardized output signal dependent of a received input signal from a rotational speed sensor.
spm-nipple
A physical object that is a special designed nipple (with external threads) mounted on to or near a bearing housing on rotating equipment acting as point of connection for a "SPM" vibration sensor.
spot recorder
A recording instrument that is using an optical head for projecting a light beam (visible or invisible) on a light-sensitive chart.
sprenkle conditioner
A flow straightener consisting of three perforated plates in series with a length equal to one pipe diameter between the successive plates. The perforations shall preferably be chamfered on the upstream side, and the total area of the holes in each plate shall be greater than 40% of the cross section area of the pipe. The ratio of plate thickness to hole diameter shall be at least 1 and the diameter of the holes shall be less than or equal to 0,05D.
spring return actuator
An actuator that after operation is returned to its starting position by a spring.
square edged orifice hole
A hole where the wall surface, i.e. the boundary between the solid and the no-solid, is of a cylindrical nature on the downstream edge and sharp and square on the upstream edge.
square root temperature indicator
A temperature indicator with square root function that is loop powered.
square-edged concentric orifice plate
A concentric hole orifice plate of which the orifice is square-shaped.
stepped stem thermowell
A thermowell with a stepped stem, i.e. a stem consisting of two or more cylindrical sections, where the outside diameters of the cylinders are reduced towards the tip.
stepped thermowell stem
A thermowell stem which is stepped, i.e. consisting of two or more cylindrical sections where the outside diameters of the cylinders are diminishing towards the tip.
straight stem thermowell
A thermowell with a straight stem.
straight thermowell stem
A thermowell stem that has a cylindrical shape.
strain gauge level transmitter
A level transmitter that is producing a standardized electrical output signal based on the input signal from a strain gauge type sensor.
sulphur analyser
An analysing instrument intended to determine the sulphur concentration in a fluid.
sulphur in gas analyser
A sulphur analyser that is intended to determine the sulphur concentration in gas.
sulphur in oil analyser
A sulphur analyser that is intended to determine the sulphur concentration in oil.
surface mounted gas detector
A gas detector that is designed to be mounted onto a surface such that it protrudes into the volume of which it is intended to detect gas.
swirl flow meter
A velocity flow meter that is designed to convert the effects caused by vortices in a flow into the frequency of the output signal that is proportional to the volumetric flow rate.
synchronoscope
A detecting instrument that is intended to indicate if two a.c. voltages or polyphase voltage systems have the same frequency and are in phase.
tachometer
A detecting instrument that is intended to measure and indicate and/or produce a signal which represents the measured speed of rotation.
tank gauge
A gauge designed for being mounted on a tank; usually a level gauge.
tapered stem thermowell
A thermowell with a tapered stem.
tapered thermowell stem
A thermowell stem that has a tapered shape.
target flow meter
A flow meter that is using a transducer to sense the dynamic force acting on a fixed body that is suspended in the flow stream.
television receiver
A signal receiver that is that part of a television system in which the picture and associated sounds are reproduced from the input signal.
temperature controller
A controller that receives a signal from a thermocouple or RDT, compares the actual temperature to the setpoint and provides an output to the control system.
temperature gauge
A gauge that is intended to measure and indicate a temperature.
temperature indicator
An indicating instrument that is intended to give a visual indication of a temperature.
temperature indicator housing
An indicator housing that is the static part of a temperature indicator.
temperature indicator scale
An indicator scale that is graduated for indication of temperature values.
temperature meter
A detecting instrument, usually a hand-held or portable instrument consisting of a digital display and a temperature sensing element (probe), that is intended to measure and indicate a measured temperature.
temperature regulator
A regulator that is intended to keep a temperature within certain boundaries.
temperature sensing element
A detecting element intended to sense temperature.
temperature switch
A functional switch that is intended to give an on or off signal when the temperature have reached a preset value.
temperature transmitter
A transmitter that is producing a standardized output signal dependent of a received input signal from a temperature element.
thermal conductivity analyser
An analysing instrument that is intended to determine a physical property that is named thermal conductivity.
thermal conductivity gas analyser
A gas analyser that is a thermal conductivity analyser intended to provide on-line gas-composition analysis based on the measured thermal conductivity of the gases in a mixture.
thermal element bulb
A physical object that is a closed metal bulb containing a temperature responsive fluid.
thermal element sheath
A physical object that is made to act as a protective layer covering a thermal element.
thermal mass flow meter
A mass flow meter that uses a heated sensing element isolated from the fluid flow path. The flow stream conducts heat from the sensing element and the conducted heat is directly proportional to the mass flow rate.
thermal recorder
A recording instrument that is using thermal pen(s) to record data on a chart.
thermal velocity flow meter
A velocity flow meter that uses a heated sensing element to measure fluid flow rate in units of volumetric flow through a closed conduit.
thermocouple
A temperature sensing element in which a pair of wires of dissimilar metals (as copper and iron) are joined and the free ends of the wires are connected to an instrument (as a voltmeter) that measures the difference in potential created at the junction of the two metals.
thermocouple transmitter
An electrical temperature transmitter that is intended to convert a thermocouple sensor signal into a standardized output signal.
thermometer
A detecting instrument for measuring temperature, especially one having a graduated glass tube with a bulb containing a liquid, typically mercury or coloured alcohol, that expands and rises in the tube as the temperature increases.
thermowell
A physical object that is a pressure-tight receptacle adapted to receive a temperature sensing element, provided with external threads or other means for pressure-tight attachment to a vessel or pipe.
thermowell process connection
An instrument process connection that is connecting a thermowell to an object containing the process medium into which the thermowell is intruding.
thermowell stem
A physical object that is the hollow cylindrical part of a thermowell that is housing the thermocouple or thermoelement and is protruding into the process medium.
threaded rupture disc holder
A rupture disk holder with threaded connection for use on high pressure equipment.
time of flight ultrasonic flow meter
An ultrasonic flow meter that use the time for the sound to travel between a transmitter and a receiver to measure a flow rate.
timepiece
An indicating instrument, such as a clock or watch, that measure, registers, or records time.
timer
A timepiece that measures a time interval and signals its end; a time-switch.
toc analyser
An analysing instrument intended to determine the total organic carbon content in a substance.
transceiver
A physical object combining a radio transmitter and a radio receiver.
transducer
A physical object that accepts information in the form of a physical or chemical variable (its input variable) and converts it into an output variable of the same or another nature, according to a definite law.
transmitter
A physical object that is an element that receives a process variable signal from a sensor and converts it into an output signal.
transmitter electronic circuit
A physical object that is a composition of the electronic parts of a transmitter.
transmitter housing
An enclosure that constitute the instrument housing of a transmitter.
transmitter housing assembly
A physical object that is an assembly of the transmitter electronic circuit, transmitter housing, zero adjustment device, span adjustment device and the indicator.
transponder
A transceiver that transmits a signal automatically in response to an appropriate triggering signal.
travel indicator
A detecting instrument that is powered and indicates the length or rotational movement.
travel stop
A position switch that terminates a rotation when a predefined position has been reached.
trend recorder
A recording instrument that enables the recording of historical data at a reduced sampling rate, to be retrieved for trend and power quality analysis.
tube bundle conditioner
A flow straightener consisting of a bundle of parallel and tangential tubes fixed together and held rigidly in the pipe. There shall be at least 19 tubes and their length shall be more than or equal to 10d.
turbidimeter
A detecting instrument for measuring turbidity (clarity) of liquids using the nephelometric principal to compare the light scattered due to contamination with the light scattering from a standard reference suspension.
turbidity analyser
An analysing instrument intended to determine the turbidity in a fluid.
turbine flow meter
A velocity flow meter that uses a multi bladed rotor to measure fluid flow rate in units of volumetric flow through a closed conduit.
turbine flow meter body
An in-line instrument body that is intended for a turbine flow meter.
turbine flow meter rotor
A flow meter rotor that constitute an internal rotating part of a turbine flow meter.
turbine speed governor
A speed governor that adjusts the intake valves of a turbine in order to maintain the speed of rotation at a required value.
twin beam flame detector
A flame detector which is utilizing twin beams.
u-tube manometer
A manometer that is a vertical or inclined U-shaped tube half-full of liquid where the measured pressure is applied to one side of the tube whilst the reference pressure (which might be of the atmosphere) is applied to the other. The difference in liquid level represents the applied pressure.
uhf antenna
An antenna that is capable of radiating or receiving electromagnetic waves in the ultra high frequency area (UHF = 300 - 3000 MHz).
uhf receiver
A signal receiver (radio) that operates in the Very High Frequency area (300 - 3000 MHz).
ultrasonic flow meter
A velocity flow meter that measures the velocity of a flow by measuring the time difference between an ultrasonic pulse sent in the flow direction and an ultrasound pulse sent opposite the flow direction.
ultrasonic level switch
A level switch that is using ultrasonic sound pulses to detect and give notice when a preset level of liquid or particulate matter is reached.
ultrasonic level transmitter
A level transmitter that is using ultrasonic sound to continuously monitor the level of a liquid or particulate matter in a tank or vessel.
ultrasonic transducer
An electromagnetic transducer that is capable of producing ultrasonic pulses based on electric signals or vice versa.
ultraviolet detector
A detector that is intended to detect the level of ultraviolet radiation.
ultraviolet flame detector
A flame detector that is intended to detect flame based on absorption of ultraviolet radiation.
union rupture disc holder
A rupture disk holder that has a union connection.
universal type orifice plate
An orifice plate with a circular design that is fit for use in orifice fittings or in the plate holders of ring-type joint (RTJ) orifice flanges.
v-cone flow meter
A differential pressure flow meter that uses a v-cone as the restriction body in the flow stream.
valve manifold assembly
A physical object that is an assembly of a manifold chamber with several openings and valve(s), which can be individually opened and closed.
van stone thermowell
A flanged thermowell intended for installation using a lap joint flange (Van Stone flange).
vane flow meter
A flow meter where the fluid flows through a specially shaped fluidic housing causing a vane to rotate.
vapour pressure dew point analyser
A dew point analyser that uses vapour pressure to determine a dew point.
variable area flow meter
A flow meter consisting of a vertical tube with a conically shaped bore which widens to the top in which a solid body (float) is supported by the force exerted by the fluid stream.
variable area flow meter element
A float that is a specially formed float for use in variable area flow meters and variable area flow indicators.
variable area flow transmitter
A flow transmitter that is producing a standardized output signal dependent of a received input signal from the flow meter sensor.
vdu controller
An electronic controller that is intended to control a visual display unit.
velocity flow meter
A flow meter that is intended to measure the flow rate of a moving fluid or gas.
venturi
A physical object that is a device that constitute a restriction with a relatively long passage with smooth entry and exit used for speeding up the fluid passing through it.
venturi tube
A pipe or tube that has a constriction with a relative long passage with a smooth coned entry and exit.
venturi tube flow meter
A differential pressure flow meter that uses a venturi tube as the restriction body.
vhf antenna
An antenna that is capable of radiating or receiving electromagnetic waves in the very high frequency area (VHF = 30 - 300 MHz).
vhf receiver
A signal receiver (radio) that operates in the Very High Frequency area (30 - 300 MHz).
vibration detector
A detector that is intended to measure and indicate the vibration level.
vibration meter
A detecting instrument for vibration measurements (frequency and amplitude), consisting of an instrument part and a vibration probe.
vibration probe
A detecting element that is intended to sense mechanical vibration and in which the oscillating motion is transferred into a voltage or current signal.
video recorder
A recording instrument that is recording signals originated by a TV camera on a moving magnetic tape for subsequent reproduction or transmission.
viscosity analyser
An analysing instrument intended to determine the viscosity of a fluid.
voltage to current converter
A signal converter that is intended for converting an input voltage signal into an output current signal.
voltage to pressure converter
A signal converter that is intended for converting a (0-10 V or 0-5 V) analogue input signal into proportional linear pneumatic output signal (3-15 or 0-20 psi).
voltage to voltage converter
A signal converter that is intended for converting one voltage input signal to another voltage output signal.
vortex flow meter
A flow meter that measures the velocity of a fluid in a pipe by detecting the frequency of vortices being shed from a specially shaped obstructing element in the fluid stream.
vortex pickup
An electronic sensor designed to sense the signal from a vortex probe.
vortex probe
A flow sensor specially designed to introduce vortices in a flow stream.
vortex transmitter
A flow transmitter that is producing a standardized output signal dependent of a received input signal from the force/strain sensor in a vortex flow meter.
water detector
A detector that is intended to detect the presence of water.
weighing scale
A detecting instrument that is intended to measure and indicate the weight of an object.
weight indicator
An indicating instrument that is intended to give a visual indication of measured weight.
weir flow meter
An open channel flow meter utilizing some kind of weir as obstruction.
welded flange thermowell
A flanged thermowell where the flange is welded to the thermowell shank/stem.
welded paddle orifice plate
A paddle orifice plate where the orifice plate and the paddle (handle) is assembled through welding.
welded thermowell
A thermowell that is designed for being welded on to a vessel or pipe.
wetted transducer
A transducer that is designed to be in contact with the process medium.
whip antenna
An antenna that is a single-element antenna that can be used with an electrically unbalanced feed line with respect to ground.
wind sensor
A detecting element that can be the sensing element of an anemometer or wind gauge.
wire antenna
An antenna where the antenna structure made from copper wire ending in isolators.
wobbe index meter
An analysing instrument intended to determine the wobble index of a gas.
xy recorder
A recording instrument in which a marking device is moved along two orthogonal axes by two separate travelling devices, to each of which the quantity to be recorded is applied.
yagi antenna
An antenna that is normally made up by one dipole, as a reflector element and several directors, all mounted on a boom.
zanker conditioner
A flow straightener consisting of a perforated plate with holes of certain specified sizes followed by a number of channels (one for each hole) formed by the intersection of a number of plates.
zener barrier
An intrinsically safe barrier that is a circuit consisting of a zener diode(s) that is acting like a short circuit limiting the voltage into a system.
zero adjustment device
A physical object (normally a screw) that is intended for zero positioning of an instrument.

iso15926-2_superclasses.xls

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activity
arranged individual
class
class of class
class of description
class of identification
class of individual
class of information representation
class of representation of thing
functional physical object
indirect property
language
physical object
possible individual
property
property quantification
representation form
scale
shape dimension

piping.xls

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O-ring
A seal ring that has a circular cross section.
O-ring flange
A pipe flange where the flanged end has a O-ring casket contact face.
O-ring gasket contact face
A gasket contact face that has a groove intended for use with an O-ring.
articulated bellows unit
A piping bellows unit that has articulated bellows, and is capable of transferring axial tension.
articulated single bellows unit
An articulated bellows unit that consists of a single bellows and a joint coupling consisting of two joints, one at each side of the bellows, held together by flat bars.
articulated twin bellows unit
An articulated bellows unit that consists of two bellows, each with an articulated coupling, and a straight piece of pipe connecting the two bellows and the couplings.
austenitic stainless steel pipe
A steel pipe that is made from austenitic stainless steel.
axial grooving metal-loss
A metal-loss feature where {[1A <= W < 3A] and [L/W >= 2]}.
axial piping bellows unit
A piping bellows unit that has a single bellows, and is not capable of transferring axial tension
axial slotting metal-loss
A metal-loss feature where {[0 < W < 1A] and [L >= 1A]}.
backing ring
A ring that is intended to be installed inside a butt welded joint between pipes and/or fittings to prevent entrance of welding material.
bar clamp
A physical object that is consisting of an elongated beam, a tail-stop clamp, and a head clamp slideably mounted on the beam for axial movement relative to the tail-stop.
basket strainer
A strainer that has a screen with the shape of a basket.
bath tub strainer
A strainer that has a screen with the shape of a bath tube.
bellows
A physical object that is a convoluted or corrugated section, intended to absorb some movement, axial and/or perpendicular to the bellow's transverse axis.
bellows unit
A physical object that contains bellows and means for connecting to other physical objects.
bent pipe section
A feature that is a non-straight section of a pipe.
bevel end pipe
A pipe that has bevelled ends.
bevelled end
A pipe end that has a bevel or chamfer, intended for butt welding.
bevelled end pipe cap
A butt welding pipe cap that has a bevelled end.
blanking cap pipe union
A physical object that is an assembly of two items comprising of one female union sub and with threaded end and a threaded cap that is screwed onto the union sub to close off fluid flow. This avoids the need to turn the connected pipe components.
blind flange
A pipe flange that is without a central opening and used to shut off a flanged pipe end.
bolted pipe clamp
A pipe clamp that is connected by bolts.
bounded seal
A pipe flange gasket that is metal reinforced.
bridge plug
A plug that is located and set to isolate a (lower) part of a wellbore.
bulkhead union
A threaded nipple that has one extended end intended to provide bulkhead penetration.
bulldog slips
A slips that has a thick neck.
butt welding elbolet
An elbolet that has a butt welding end on the branch connection side.
butt welding end
A pipe end that has a shape intended for butt welding.
butt welding latrolet
A latrolet that has a butt-welding end for connecting the branch.
butt welding long radius pipe return
A long radius pipe return that has butt welding ends.
butt welding pipe
A pipe that has butt welding ends.
butt welding pipe cap
A pipe cap that has a butt welding end.
butt welding pipe cross
A pipe cross where all ends are butt welding ends.
butt welding pipe reducer
A pipe reducer that has butt welding ends.
butt welding pipe tee
A pipe tee where all ends are butt welding ends.
butt welding pipe union
A pipe union that has butt welding ends.
carbon steel pipe
A steel pipe that is made from carbon steel.
casing crossover
A combination pipe coupling that is intended for joining of well casings.
casing hanger
A well string hanger that is designed to suspend a well casing string down the well.
casing nipple
A physical object that is a threaded nipple used to hold and secure a part (tubing) in the casing.
casing slips
A slips that is intended to be fitted into an elevator to support the casing being run into the well.
casing spool
A physical object that has an inner surface designed to receive a casing hanger.
casing spool bushing
A physical object that is a sleeve placed in a casing spool to act as a secondary seal in casing spools or tubing heads.
casing spool flanged end
A casing spool that has flanged ends.
casing spool hub end
A casing spool that has hub ends.
casing spool hub end outlet
A casing spool that has side outlets which have hub ends for clamp connection.
casing spool lockdown
A casing spool that is equipped with lockdown screws for holding of the casing hanger.
casing spool studded outlet
A casing spool that has side outlets which have studded ends for flanged connection.
casing spool threaded outlet
A casing spool that has side outlets which have internal threads.
cast iron pipe
A pipe that is made from cast iron.
chamfered end
A bevelled end that has a slight chamfer, but without a root face.
christmas tree
A physical object that is an assembly of pipes and piping parts, with valves and associated control equipment that is connected to the top of a wellhead and is intended for control of fluid from a well.
circumferential grooving metal-loss
A metal-loss feature where {[L/W <= 0.5] and [1A <= L < 3A]}.
circumferential slotting metal-loss
A metal-loss feature where {[W >= 1A] and [0 < L < 1A]}.
clamp jaw
A jaw that has a straight edge for biting into a workpiece for holding a workpiece or workpieces together.
coiled tubing
A pipe that is manufactured in continuous lengths and stored on a reel.
collar slips
A slips that is a ring of rectangular sections secured to a shaft to provide axial location.
combination pipe coupling
A pipe coupling that is threaded and intended to join pipes and/or piping components of the same specified size designation with different types of threads.
compound bevel end
A bevelled end that has a plain cut root face normal to the center line and two concentric bevelled surfaces at different angels to the center line.
compound bevel end pipe
A bevel end pipe that has compound bevel ends.
compression end
A pipe end that is intended to connect using a compression ring.
concentric butt welding pipe reducer
A concentric pipe reducer that has butt welding ends.
concentric flanged pipe reducer
A concentric pipe reducer that has flanged ends.
concentric pipe reducer
A pipe reducer that has the center lines of the two ends in line.
concentric swaged pipe nipple
A swaged pipe nipple that is concentric.
concentric tubing hanger
A tubing hanger that has the axis of the production tubing concentric with the wellhead axis.
conductor housing
A physical object that has a cylindrical shape to embrace and attach a well conductor pipe or surface casing.
continuous-welded pipe
A welded pipe that has been manufactured by applying a continuous welding process.
corroded feature
A metal-loss feature that is caused by an electrochemical reaction of the metal wall with its environment causing a loss of metal.
corrugated pipe
A pipe that has a wall shape with alternating ridges and grooves (i.e. a pipe with a wavy formed wall).
crack
A feature that is a planar, two-dimensional separation with displacement of the fracture surfaces.
crossover
A physical object that is a one-piece (usually tubular) section used for the purpose of joining or changing from one size, mass, or type of connection to the same or another size, mass, or type of connection.
delta ring flange
A pipe flange that is a pipe flange where the flanged end has a delta ring gasket contact face.
delta ring gasket contact face
A gasket contact face that is shaped for use with a delta ring.
double hub end pipe
A hub end pipe that has two hub ends.
double jacketed gasket
A jacketed gasket that has the filler material enclosed in a double metal jacket.
double lever pipe clamp
A lever pipe clamp that is closed and opened by two levers.
double slips casing hanger
A casing hanger that has two sets of slips; one above the other.
drift mandrel
A physical object that is of cylindrical shape and machined to accurate tolerances.
drill collar
A threaded pipe that is used at the bottom of the drill string - just above the drill bit - to add weight to the drill bit.
drill collar nonmagnetic
A drill collar that has a small magnetic permeability.
drill pipe
A threaded pipe that is heavy, thick-walled and seamless, and used in rotary drilling to turn the drill bit and to provide a conduit for the drilling mud. It is internally threaded in one end and externally threaded in the other end.
drill stem assembly
A physical object that includes a number of drill stem components that makes up the rotary part of the drill string.
drill stem bit sub
A drill stem sub that has two box ends and is used between the drill collars and the drill bit.
drill stem collar sub
A drill stem sub that is a short drill pipe used between the drill collars.
drill stem crossover sub
A drill stem sub that is used to join sections of the drillstring that are not compatible due to diameter or thread design differences.
drill stem lift sub
A drill stem sub that is used for lifting of drill collars. It has an upper shoulder for gripping by the elevator and a lower tool joint pin connection for connecting to the drill collar box end.
drill stem lower kelly valve
A drill stem sub that includes a valve and is used between the kelly and the drill pipe.
drill stem sub
A physical object that is used in rotary drilling as a part of the drill string assembly.
drill stem swivel sub
A drill stem sub that has two pin ends and is used between the drilling swivel and the upper kelly valve.
drill stem tool joint sub
A drill stem sub that is a short drill pipe used in a drill string.
drill stem upper kelly valve
A drill stem sub that includes a valve and is used between the swivel sub and the kelly.
drip ring
A physical object that is intended to be installed between pipe flanges and used for drainage.
dual tubing hanger
A tubing hanger that holds two tubing strings.
eccentric butt welding pipe reducer
An eccentric pipe reducer that has butt welding ends.
eccentric flanged pipe reducer
An eccentric pipe reducer that has flanged ends.
eccentric pipe reducer
A pipe reducer that is a pipe reducer where the centerlines of the two ends have an offset.
eccentric swaged pipe nipple
A swaged pipe nipple that is eccentric.
eccentric tubing hanger
A tubing hanger that has the axis of the production tubing parallel with the wellhead axis.
elbolet
An olet that is making a reducing tangent branch on a pipe elbow.
electric welded pipe
A welded pipe that has been manufactured by applying an electric welding process.
electric-fusion-welded pipe
An electric welded pipe that has been manufactured by applying an electric fusion welding process.
electric-resistance-welded pipe
An electric welded pipe that has been manufactured by applying an electric resistance welding process.
equal hexagonal nipple
A hexagonal nipple where the has ends have the same nominal size.
equal pipe cross
A pipe cross where all four ends have the same nominal size.
equal pipe cross butt welding
An equal pipe cross that has butt welding ends.
equal pipe cross externally and internally threaded
An equal pipe cross threaded that has externally and internally threaded ends.
equal pipe cross externally threaded
An equal pipe cross threaded that has externally threaded ends.
equal pipe cross internally threaded
An equal pipe cross threaded that has internally threaded ends.
equal pipe cross socket welding
An equal pipe cross that has socket welding ends.
equal pipe cross threaded
An equal pipe cross that has threaded ends.
equal pipe lateral tee
A pipe lateral where the ends have the same nominal size.
equal pipe tee
A pipe tee where all three ends have the same nominal pipe size.
equal pipe tee externally and internally threaded
An equal pipe tee threaded that has externally and internally threaded ends.
equal pipe tee externally threaded
An equal pipe tee threaded that has externally threaded ends.
equal pipe tee internally threaded
An equal pipe tee threaded that has internally threaded ends.
equal pipe tee socket welding
An equal pipe tee that has socket welding ends.
equal pipe tee threaded
An equal pipe tee that has threaded ends.
expander flange
A pipe flange that is a pipe flange where the nominal size of the non-flanged end is larger than the nominal size of the flanged end.
extended seal neck tubing hanger
A tubing hanger that has an extended neck for additional sealing.
external metal-loss feature
A metal-loss feature that is located on the outside of a wall.
external upset pipe
An upset pipe that has the wall thickening on the outside.
externally upset well tubing both ends
A pipe threaded externally both ends that is made thicker in the area of the threads (for material cut off for threadings), and where the thickening is made on the outer side of the pipe wall.
female face flanged end
A flanged end that has a female gasket contact face.
female gasket contact face
A gasket contact face that includes an upper shoulder.
ferritic-austenitic stainless steel pipe
A steel pipe that is made from ferritic austenitic stainless steel.
flanged end
A pipe end that has the shape of a circular plate with holes to make a bolted connection.
flanged end tubing head adapter
A tubing head adapter that has a flanged end connection.
flanged pipe
A pipe that has flanged ends.
flanged pipe cross
A pipe cross where all ends are flanged ends.
flanged pipe reducer
A pipe reducer that has flanged ends.
flanged pipe tee
A pipe tee where all ends are flanged ends.
flared end
A pipe end that is expanded by flaring and intended to enable a basic lap joint connection.
flat bar pipe clamp
A physical object that is a semicircular shaped flat bar with lugs for bolting.
flat bar pipe clamp assembly
A physical object that consists of two flat bar pipe clamps and bolts.
flat face flange
A pipe flange where the flanged end has a flat gasket contact face.
flat face flanged end
A flanged end that has a flat gasket contact face.
flat gasket contact face
A gasket contact face that has a flat surface with no grooves or protruding parts.
flat ring gasket
A pipe flange gasket that has a rectangular cross section for flat face contact faces without holes for bolts.
flexible pipeline
A pipeline that is assembled from flexible pipes.
fluid conductor
A fluid transport device that is capable of carrying fluids from one location to another.
fluid transport device
A transport device intended to transport substances that behaves as fluid from one unit of operation to another without the intention of altering the fluid' composition, flow rate or state.
full face gasket
A pipe flange gasket that has a rectangular cross section for flat face contact faces with holes for bolts.
full pipe coupling
A pipe coupling that is intended to join pipes and/or piping components with equal Nominal Pipe Size.
gasket contact face
A feature that is providing sealing contact with a gasket.
general metal-loss
A metal-loss feature where {[W >= 3A] and [L >= 3A]}.
gmaw welded pipe
A welded pipe that is manufactured using a continuous gas metal-arc welding process.
graphite pipe flange gasket
A pipe flange gasket that is made from graphite.
grinded feature
A metal-loss feature where the reduction in wall thickness is obtained by removal of material by hand filing or power disk grinding.
groove
A feature that is a long, narrow furrow in a surface.
groove face flanged end
A flanged end that has a groove gasket contact face.
groove flange
A pipe flange where the flanged end has a groove gasket contact face.
groove gasket contact face
A gasket contact face that has a groove.
half pipe coupling
A pipe coupling that is a pipe coupling where only one of the ends have been shaped to allow linear connection. The other end has a drilled hole.
hammerlug pipe union nut
A pipe union nut that has lugs to facilitate tightening/untightening, also by hitting with a hammer.
hammerlug union
A pipe union that has lugs to facilitate tightening and untightening using hammer(s).
heat treated pipe
A pipe that is heat treated.
helical seam welded pipe
A welded pipe that has helical weld seam(s).
hexagonal head pipe plug
A threaded pipe plug that has a hexagonal head.
hexagonal nipple
A threaded nipple that has a hexagonal shaped center piece.
hexagonal pipe union
A pipe union that has a hexagonal nut connecting the two subs and which supports tightening and untightening using wrenches.
hexagonal pipe union nut
A pipe union nut that has a hexagonal shape.
hinged casing hanger
A casing hanger that is equipped with a hinge so that it can be opened to fit around a casing.
horizontal tubing hanger
A tubing hanger that is having the production bore branching off at right angles from the main bore.
hose coupling
A physical object that consists of a hose nipple and a hose coupling swivel.
hose coupling swivel
A physical object that consists of two cylindrically shaped parts with an internal swivel connection. One of the parts is internally threaded and intended to be connected to a hose nipple, the other has a hose shank end intended to be connected to a hose.
hose nipple
A physical object that consists of a cylinder with one externally threaded end intended to be connected to a hose coupling swivel and one end intended to be inserted into a hose and secured.
hub end
A pipe end that has a protruding circular bulb shaped to allow a connection to be made using a matching pipe clamp and seal ring to prevent leakage.
hub end pipe
A pipe that has one or more hub ends.
hub end tubing head adapter
A tubing head adapter that has a hub end for clamp connection.
insert pipe reducer
A pipe reducer that has one plain end and one larger socket welding end.
inside threaded female pipe union sub
A pipe union female sub threaded end that has inside threads.
inside threaded male pipe union sub
A pipe union male sub threaded end that has inside threads.
integral joint well tubing
A pipe threaded externally one end and internally other end that is thicker in the area of the threads. The thickening is both on the outside and the inside.
internal and external upset pipe
An upset pipe that has the wall thickening on both the inside and the outside.
internal metal-loss feature
A metal-loss feature that is located on the inside of a wall.
internal upset pipe
An upset pipe that has the wall thickening on the inside.
jacketed gasket
A pipe flange gasket that has a filler material enclosed in a metal jacket.
jaw
A physical object that has a mouth-structure for biting, crushing, gripping, cutting, etc
kelly
A drill stem sub that is a pipe with a many-sided (usually square or hexagonal) outer surface.
kelly saver sub
A drill stem sub that is made up onto the bottom of the kelly to protect the pin end of the kelly from wear during make-up and break-out operations.
landing nipple
A physical object that is designed to locate, seal and retain flow control devices such as blanking plugs, safety valves, equalizing checks and instrumentation hangers.
lap joint flange
A pipe flange that is intended to be used with stub ends.
lap joint stub end
A physical object that is made to connect a pipe or piping component to a lapped flange.
lapped end
A pipe end that has a flat ring intended to be used at lap joints.
lapped flange
A pipe flange that is intended to hold stub ends of dissimilar material by overlapping each other.
latroflange
A latrolet that has a flanged end for connecting the branch.
latrolet
An olet that is making a reducing branch connection at an angle less than 90 (typically 45) degrees on a straight pipe.
lens ring flange
A pipe flange where the flanged end has a lens ring gasket contact face.
lens ring gasket contact face
A gasket contact face that is shaped for use with a lens ring.
lever pipe clamp
A pipe clamp that is closed and opened by levers.
liner hanger
A well string hanger that is designed to hang liners in casings.
long radius pipe return
A pipe return that is a pipe return where the centerline radius is 1.5 times the nominal size, except for small sizes (NPS<1") which have larger radii.
long radius reducing pipe elbow butt welding
A pipe elbow reducing that is also a pipe elbow long radius and has butt welding ends.
male face flanged end
A flanged end that has a male gasket contact face.
male gasket contact face
A gasket contact face that includes a lower shoulder.
marker
A physical object that is used to mark a position, place reached, etc.
metal-loss cluster
A metal-loss feature that is a collection of two or more interacting metal-loss features where the axial spacing between the metal-loss feature edges is less than the smallest metal-loss feature length and the circumferential spacing is less than the smallest metal-loss feature width.
metal-loss end point
An end point that is located on the surface of a wall at the intersection of a plane normal to the centerline through the point of a metal-loss feature which is farthest off from the start point of an inspection, and a plane parallel to the centerline passing through the point of the metal-loss feature that is farthest off from the start.
metal-loss feature
A feature that is a measurable loss of metal.
metal-loss start point
A start point that is located on the surface of a wall at the intersection of a plane normal to the centerline through the point of a metal-loss feature which is closest to the start point of an inspection, and a plane parallel to the centerline passing through the point of the metal-loss feature that is nearest to the start point of a pipeline.
metallic gasket
A gasket that is made from metal alloy, or which contains substance of metal alloys.
mid-wall feature
A metal-loss feature that does not run out to either the internal or external surface.
mitered pipe bend
A physical object that is used to change piping direction with a non-standard radius, fabricated from mitred pipe segments.
nipoflange
An olet that has an integral nipple and flanged end making a 90-degree branch from the main run of pipe.
nipolet
An olet that is making a 90-degree branch and which has an integral pipe nipple.
non metallic flat gasket
A gasket that is made of resilient or pliable materials. Metal may be incorporated as reinforcing or filler materials.
nonupset pipe
A threaded pipe that has the same nominal outside diameter for the whole length of pipe, and it is not made thicker in the area of the threads.
nonupset well tubing both ends
A pipe threaded externally both ends that is not thicker in the area of the threads, and is used for well tubing.
nozzle
A physical object that has a protruding part through which a stream of fluid is directed.
npt threaded full pipe coupling
A threaded full pipe coupling that has NPT threaded ends.
octagonal ring gasket
An R ring gasket that has a symmetrical octagonal cross section without holes.
olet
A physical object that has a self reinforced end intended to be welded onto a hole in the wall of a pipe or a piping component. The other end is to be connected to another pipe or piping component.
outside threaded female pipe union sub
A pipe union female sub threaded end that has outside threads.
outside threaded male pipe union sub
A pipe union male sub threaded end that has outside threads.
oval ring gasket
A ring joint gasket that has an oval cross section without holes.
overshot slips
A slips that is designed to engage, pack off and retrieve debris or "fish" from a wellbore.
pad flange
A pipe flange that has no neck or pipe hub and which is directly welded to or into a container wall.
pinhole metal-loss
A metal-loss feature where {[0 < W < 1A] and [0 < L < 1A}.
pipe
A physical object that is a long tube or hollow body intended for conduction of liquid, gaseous or finely divided solid materials, or used for structural purposes.
pipe bend
A physical object that is used to change piping direction with a non-standard radius
pipe blind hub
A physical object that is of cylindrical shape with a blind end in one end and a hub end in the other end.
pipe bushing
A physical object that has one external threaded end and one smaller internal threaded end intended to accommodate different bore diameters.
pipe bushing flush
A pipe bushing without head.
pipe bushing hexagonal head
A pipe bushing that has a hexagonal head.
pipe cap
A physical object that is intended to provide closure of a pipe end by having it fitting on or over (but not inside) the end.
pipe clamp
A physical object that consists of two halves shaped to be placed over a piping hub end and be connected.
pipe coupling
A physical object that is a one-piece cylindrical section intended to join pipes and/or piping components.
pipe cross
A physical object that has 4 ends/branches mutually at right angles in one plane.
pipe cross reducing on both branches
A reducing pipe cross where the nominal sizes of two opposite branches are different and smaller than the other opposite pair, which have the same nominal size.
pipe cross reducing on one branch
A reducing pipe cross where the nominal size of one of the branches is smaller than the other 3 branches, which have the same nominal size.
pipe cross reducing one run and both branches
A reducing pipe cross where the nominal size of one of the branches is larger than the other 3 branches, which have the same nominal size.
pipe cross reducing one run and one branch
A reducing pipe cross where the nominal size of the opposite branches are different, and the two largest branches have the same nominal size.
pipe cross reducing opposite branches equal
A reducing pipe cross where the nominal size of opposite branches are equal, with the one pair smaller than the other pair.
pipe crossover
A physical object that provides a connection between two dissimilar piping ends or between similar parts of different sizes.
pipe crossover flanged end
A pipe crossover where one end is a flanged end.
pipe crossover flanged end one side and threaded end other side
A pipe crossover flanged end that is also a pipe crossover threaded end; the flanged end on one side and the threaded end on the other side.
pipe crossover flanged end one side and union female end other side
A pipe crossover flanged end that is also a pipe crossover union end female; the flanged end on one side and the union female end on the other side.
pipe crossover flanged end one side and union male end other side
A pipe crossover flanged end that is also a pipe crossover union end male; the flanged end on one side and the union male end on the other side.
pipe crossover flanged ends
A pipe crossover flanged end where both ends are flanged ends.
pipe crossover hub end
A pipe crossover where one end is a hub end.
pipe crossover hub end one side and flanged end other side
A pipe crossover hub end that is also a pipe crossover flanged end; the hub end on one side and the flanged end on the other side.
pipe crossover hub end one side and threaded end other side
A pipe crossover hub end that is also a pipe crossover threaded end; the hub end on one side and the threaded end on the other side.
pipe crossover hub end one side and union female end other side
A pipe crossover hub end that is also a pipe crossover union end female; the hub end on one side and the union end female on the other side.
pipe crossover hub end one side and union male end other side
A pipe crossover hub end that is also a pipe crossover union end male; the hub end on one side and the union end male on the other side.
pipe crossover hub ends
A pipe crossover hub end where both ends are hub ends.
pipe crossover threaded end
A pipe crossover where one end is a threaded end.
pipe crossover threaded end one side and union female end other side
A pipe crossover threaded end that is also a pipe crossover union end female; one end is a threaded end and the other end is a union female end.
pipe crossover threaded end one side and union male end other side
A pipe crossover threaded end that is also a pipe crossover union end male; one end is a threaded end and the other end is a union male end.
pipe crossover threaded ends
A pipe crossover threaded end that has both ends as threaded ends.
pipe crossover union end
A pipe crossover where one end is a union end.
pipe crossover union end female
A pipe crossover union end where one end is a union female end.
pipe crossover union end male
A pipe crossover union end where one end is a union male end.
pipe crossover union ends
A pipe crossover union end where both ends are union ends.
pipe crossover union ends ff
A pipe crossover union ends where both ends are union female ends.
pipe crossover union ends mm
A pipe crossover union ends where both ends are union male ends.
pipe crowsfoot
A physical object that has one main inlet pipe and several outlets.
pipe dent
A dent that is a distortion of the pipe wall resulting in a change of the internal diameter but not necessarily resulting in localised reduction of wall thickness.
pipe elbow
A physical object that is intended to make a change in the direction of a pipe run between 0 and 135 degrees.
pipe elbow 30 degree
A pipe elbow that is making a nominal 30 degree change in direction.
pipe elbow 45 degree
A pipe elbow that is making a nominal 45 degree change in direction.
pipe elbow 45 degree externally and internally threaded end
A pipe elbow 45 degree threaded that has externally and internally threaded ends.
pipe elbow 45 degree externally threaded end
A pipe elbow 45 degree threaded that has externally threaded ends.
pipe elbow 45 degree flanged
A pipe elbow 45 degree with flanged ends.
pipe elbow 45 degree flanged end flat face
A pipe elbow 45 degree flanged that has flat face flanged ends.
pipe elbow 45 degree flanged end raised face
A pipe elbow 45 degree flanged that has raised face flanged ends.
pipe elbow 45 degree flanged end ring joint
A pipe elbow 45 degree flanged that has ring joint flanged ends.
pipe elbow 45 degree internally threaded end
A pipe elbow 45 degree threaded that has internally threaded ends.
pipe elbow 45 degree threaded
A pipe elbow 45 degree with threaded ends.
pipe elbow 60 degree
A pipe elbow that is making a nominal 60 degree change in direction.
pipe elbow 90 degree
A pipe elbow that is making a nominal 90 degree change in direction.
pipe elbow base type
A pipe elbow that has an integral base plate.
pipe elbow butt welding
A pipe elbow that has butt welding ends.
pipe elbow double branch
A pipe elbow that has the three outlets in a plane, two in opposite directions and the third at 90 degrees.
pipe elbow externally and internally threaded end
A pipe elbow threaded that has externally and internally threaded ends.
pipe elbow externally threaded end
A pipe elbow threaded that has externally threaded ends.
pipe elbow flanged
A pipe elbow that has flanged ends.
pipe elbow internally threaded end
A pipe elbow threaded that has internally threaded ends.
pipe elbow long radius
A pipe elbow that is a pipe elbow where the centerline radius is 1.5 times the nominal size, except for small sizes (NPS<1") which have larger radii. For reducing elbows, the radius is 1.5 times the nominal pipe size of the largest end.
pipe elbow long radius butt welding
A pipe elbow long radius that has butt welding ends.
pipe elbow long tangent
A pipe elbow that has a straight extension at one end.
pipe elbow reducing
A pipe elbow that has different nominal size at the ends.
pipe elbow short radius
A pipe elbow where the centerline radius is 1.0 times the nominal size, except for small sizes (NPS<1") which have larger radius.
pipe elbow side outlet
A pipe elbow that has three outlets located along three perpendicular axes where the centerpoint of the elbow is at the origin of the axes.
pipe elbow socket welding
A pipe elbow that has socket welding ends.
pipe elbow threaded
A pipe elbow that has threaded pipe ends.
pipe elbow union
A pipe elbow that has union ends.
pipe end
An end that has a surface shaped to provide connection, sealing, and communication of pressure or flow between physical objects installed in, or connected to, piping systems.
pipe end buttress threads
A threaded pipe end that has buttress threads.
pipe end dovetail threads
A threaded pipe end that has dovetail threads.
pipe end external buttress threads
A pipe end external threads that has external buttress threads.
pipe end external dovetail threads
A pipe end external threads that has external dovetail threads.
pipe end external hook threads
A pipe end external threads that has external hook threads.
pipe end external line-pipe threads
A pipe end external threads that has external line-pipe threads.
pipe end external round threads
A pipe end external threads that has external round threads.
pipe end external threads
A threaded pipe end that has the threads on the outer side of the pipe wall.
pipe end external wedge threads
A pipe end external threads that has external wedge threads.
pipe end hook threads
A threaded pipe end that has hook threads.
pipe end internal buttress threads
A pipe end internal threads that has internal buttress threads.
pipe end internal dovetail threads
A pipe end internal threads that has internal dovetail threads.
pipe end internal hook threads
A pipe end internal threads that has internal hook threads.
pipe end internal line-pipe threads
A pipe end internal threads that has internal line-pipe threads.
pipe end internal round threads
A pipe end internal threads that has internal round threads.
pipe end internal threads
A threaded pipe end that has the threadings on the inner side of the pipe wall.
pipe end internal wedge threads
A pipe end internal threads that has internal wedge threads.
pipe end line-pipe threads
A threaded pipe end that has line-pipe threads.
pipe end round threads
A threaded pipe end that has round threads.
pipe end stepped threaded
A threaded pipe end that has threadings of a two-step design.
pipe end wedge threads
A threaded pipe end that has wedge threads.
pipe expansion device
A physical object that is used to accommodate the movement in piping systems due to temperature changes and vibrations.
pipe flange
A physical object that has one of its ends shaped like a circular (sometimes also other shape, like square rounded) plate with holes to make a bolted connection.
pipe flange gasket
A gasket that is used to seal between two pipe flanges. It is circular with a centric hole, compressed into the joint surface irregularities in the connected pipe flanges, and shaped to fit different gasket contact faces.
pipe flange hub
A feature that is the part of a pipe flange located between the flanged end and the non-flanged end.
pipe flange spacer
A physical object that is intended to be inserted between two pipe flanged ends.
pipe flange spade
A physical object that is a circular plate with no central opening and holes to match mating flanged ends. It is also equipped with a handle.
pipe goatshead
A physical object that has one main pipe and two side outlets of smaller diameter, and all axes are in the same plane.
pipe hanger
A physical object that is designed to support piping components from above.
pipe hub
A physical object that is of cylindrical shape with a buttwelding end in one end and a hub end in the other end.
pipe hub end seal ring
A seal ring that is used to prevent leakage in a pipe hub end connection.
pipe lateral tee
A physical object that has three pipe ends where the branch is angled to the run, typically at 45 degrees.
pipe nipple
A pipe that is a short piece of pipe with standardised length.
pipe pig
A physical object that is driven through a pipeline by the flow of fluid, to perform various internal activities (depending on the pig type) such as separating fluids, cleaning or inspecting the pipeline.
pipe plug
An physical object that is a plug intended for plugging a pipe end.
pipe reducer
A physical object that has different nominal pipe size at the two ends, intended to connect pipes or piping components.
pipe reducer assembly
A physical object that is an assembly of pipe reducers.
pipe return
A physical object that is making a nominal 180 degree change in the direction of a pipe run.
pipe rotary shouldered box connection
A pipe end internal threads that has drill pipe threads and a shouldered stop.
pipe rotary shouldered pin connection
A pipe end external threads end that is made with drill pipe threads and with a shouldered stop.
pipe tee
A physical object that has three piping ends in T-shape, including a branch at 90 degrees.
pipe tee externally threaded
A threaded pipe tee that has externally threaded ends.
pipe tee internally threaded
A threaded pipe tee that has internally threaded ends.
pipe tee reducing both runs
A reducing pipe tee where both the header (run) ends have a smaller nominal size than the branch.
pipe tee reducing branch
A reducing pipe tee where the branch has a smaller nominal size than both the header (run) ends, which have the same nominal size.
pipe tee reducing branch butt welding
A pipe tee reducing branch that has butt welding ends.
pipe tee reducing branch threaded
A pipe tee reducing branch that has threaded ends.
pipe tee reducing one run
A reducing pipe tee where one of the header (run) ends has a smaller nominal size than that of the other header (run) and the branch, which have the same size.
pipe tee reducing one run and branch
A reducing pipe tee where one of the header (run) ends and the branch has a smaller nominal size than that of the other header (run).
pipe tee straight butt welding
An equal pipe tee that has butt welding ends.
pipe tee threaded externally and internally
A threaded pipe tee that has externally and internally threaded ends.
pipe threaded both ends
A threaded pipe which is threaded both ends.
pipe threaded externally both ends
A pipe threaded both ends that has the threadings on the external side of the pipe wall.
pipe threaded externally one end and internally other end
A pipe threaded both ends that has one end with internal threads and the other end with external threads.
pipe threaded internally both ends
A pipe threaded both ends that has the threadings on the internal side of the pipe wall.
pipe union
A physical object that is an assembly of three items comprising of two threaded ends and a center piece that draws the two ends together when rotated.
pipe union female sub
A pipe union sub that has a recessed front guide ring for mating with the male sub, and with an externally threaded union end for the union nut to be screwed on.
pipe union female sub bevelled end
A pipe union female sub that has a pipe connecting end which is bevelled.
pipe union female sub flanged end
A pipe union female sub that has a pipe connecting end which is flanged.
pipe union female sub socketwelded end
A pipe union female sub that has a pipe connecting end which is a socket welding end.
pipe union female sub threaded end
A pipe union female sub that has a pipe connecting end which is threaded.
pipe union male sub
A pipe union sub that mates the female sub, and has a raised shoulder union end that will hold the union nut.
pipe union male sub bevelled end
A pipe union male sub that has a pipe connecting end which is bevelled.
pipe union male sub socketwelding end
A pipe union male sub that has a pipe connecting end which is a socket welding end.
pipe union male sub threaded end
A pipe union male sub that has a pipe connecting end which is threaded.
pipe union nut
A nut that has a collar designed for use in piping unions.
pipe union sub
A physical object that is the part of a pipe union that connects to the pipe or piping component. It has two pipe ends where one of the ends is a pipe union end intended for connection to a mating union end, and the other end intended for connection to the pipe or piping component.
pipe wye
A physical object that has 3 pipe ends in Y-shape, where the branches diverge in the same plane and at 45 degrees to the main axis.
pipeline
A fluid conductor that consists of pipe, possibly also including pumps, valves, and control devices, intended for conveying liquids, gases, or finely divided solids.
pipeline freespan end point
An end point that is the point at which the pipeline freespan section resumes direct contact with the seabed when seen in the direction from start to end of the pipeline.
pipeline freespan section
A pipeline span section that is a pipeline span section where the adjacent sections are pipeline supported sections.
pipeline freespan start point
A start point that is the point from where a pipeline freespan section has no direct contact with the seabed when seen in the direction from start to end of the pipeline.
pipeline intermittent spanning end point
An end point that is the point at which the pipeline intermittent spanning section resumes direct contact with the seabed and which qualifies as the start of a supported section when seen in the direction from start to end of the pipeline.
pipeline intermittent spanning section
A pipeline span section that consists of multiple consecutive freespans, but where the length of each of the freespans is less than the critical span length.
pipeline intermittent spanning start point
A start point that is the first point of a pipeline intermittent spanning section where the pipeline has no direct contact with the seabed, when seen in the direction from start to end of the pipeline.
pipeline marker
A marker that is used to mark a position on a pipeline.
pipeline section
A section that is a section of a pipeline.
pipeline section end point
An end point that is where a pipeline section is considered to end when seen in the direction from the pipeline start point to the pipeline end point.
pipeline section start point
A start point that is where a pipeline section is considered to start when seen in the direction from the pipeline start point to the pipeline end point.
pipeline span section
A pipeline span section that is a pipeline span section where the adjacent sections are pipeline supported sections.
pipeline supported section
A pipeline section that is continuously supported, or where the eroded sections of the seabed are negligible.