Commission Electrotechnique Internationale
International Electrotechnical Commission
Международная Электротехническая Комиссия

 

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Electropedia: The World's Online Electrotechnical Vocabulary
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Electropedia (also known as the "IEV Online") is the world's most comprehensive online electrical and electronic terminology database containing more than 20 000 terms and definitions in English and French organized by subject area, with equivalent terms in various other languages: Arabic, Chinese, Finnish, German, Italian, Japanese, Norwegian (Bokmål and Nynorsk), Polish, Portuguese, Russian, Serbian, Slovenian, Spanish and Swedish (coverage varies by subject area).

Electropedia is produced by the IEC, the world’s leading organization that prepares and publishes International Standards for all electrical, electronic and related technologies – collectively known as “electrotechnology”. Electropedia contains all the terms and definitions in the International Electrotechnical Vocabulary or IEV which is published also as a set of publications in the IEC 60050 series that can be ordered separately from the IEC webstore.

The world’s experts in electrotechnical terminology work to produce Electropedia under the responsibility of IEC Technical Committee 1 (Terminology), one of the 175 IEC technical committees.
Subject areas    - Click on title for list of terms
101Mathematics
102Mathematics - General concepts and linear algebra
103Mathematics - Functions
112Quantities and units
113Physics for electrotechnology
114Electrochemistry
121Electromagnetism
131Circuit theory
141Polyphase systems and circuits
151Electrical and magnetic devices
161Electromagnetic compatibility
191Dependability and quality of service
195Earthing and protection against electric shock
212Electrical insulating solids, liquids and gases
221Magnetic materials and components
311Electrical and electronic measurements - General terms relating to measurements
312Electrical and electronic measurements - General terms relating to electrical measurements
313Electrical and electronic measurements - Types of electrical measuring instruments
314Electrical and electronic measurements - Specific terms according to the type of instrument
321Instrument transformers
351Control technology
371Telecontrol
395Nuclear instrumentation: Physical phenomena, basic concepts, instruments, systems, equipment and detectors
411Rotating machinery
415Wind turbine generator systems
421Power transformers and reactors
426Equipment for explosive atmospheres
431Transductors
436Power capacitors
441Switchgear, controlgear and fuses
442Electrical accessories
444Elementary relays
445Time relays
447Measuring relays
448Power system protection
461Electric cables
466Overhead lines
471Insulators
482Primary and secondary cells and batteries
521Semiconductor devices and integrated circuits
531Electronic tubes
541Printed circuits
551Power electronics
561Piezoelectric devices for frequency control and selection
581Electromechanical components for electronic equipment
601Generation, transmission and distribution of electricity - General
602Generation, transmission and distribution of electricity - Generation
603Generation, transmission and distribution of electricity - Power systems planning and management
604Generation, transmission and distribution of electricity - Operation
605Generation, transmission and distribution of electricity - Substations
617Organization/Market of electricity
651Live working
691Tariffs for electricity
701Telecommunications, channels and networks
702Oscillations, signals and related devices
704Transmission
705Radio wave propagation
712Antennas
713Radiocommunications: transmitters, receivers, networks and operation
714Switching and signalling in telecommunications
715Telecommunication networks, teletraffic and operation
716Integrated services digital network (ISDN) - Part 1: General aspects
721Telegraphy, facsimile and data communication
722Telephony
723Broadcasting: Sound, television, data
725Space radiocommunications
726Transmission lines and waveguides
731Optical fibre communication
732Computer network technology
801Acoustics and electroacoustics
802Ultrasonics
806Recording and reproduction of audio and video
807Digital recording of audio and video signals
808Video cameras for non-broadcasting
811Electric traction
815Superconductivity
821Signalling and security apparatus for railways
826Electrical installations
841Industrial electroheat
845Lighting
851Electric welding
881Radiology and radiological physics
891Electrobiology
901Standardization
902Conformity assessment
903Risk assessment


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