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Electropedia: The World's Online Electrotechnical Vocabulary
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   Search also in definitions  Numbers correspond to table below


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 (also known as the "IEV Online") 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.

Electropedia is the world's most comprehensive online terminology database on “electrotechnology”, containing more than 22 000 terms and definitions in English and French organized by subject area, with equivalent terms in various other languages: Arabic, Chinese, Czech, Finnish, German, Italian, Japanese, Korean, Norwegian (Bokmål and Nynorsk), Polish, Portuguese, Russian, Serbian, Slovenian, Spanish and Swedish (coverage varies by subject area).

The world’s experts in electrotechnical terminology work to produce Electropedia under the responsibility of IEC Technical Committee 1 (Terminology), one of the 203 IEC Technical Committees and Subcommittees.
Subject areas    - Click on title for list of terms
101 Mathematics
102 Mathematics - General concepts and linear algebra
103 Mathematics - Functions
112 Quantities and units
113 Physics for electrotechnology
114 Electrochemistry
121 Electromagnetism
131 Circuit theory
141 Polyphase systems and circuits
151 Electrical and magnetic devices
161 Electromagnetic compatibility
192 Dependabilty
195 Earthing and protection against electric shock
212 Electrical insulating solids, liquids and gases
221 Magnetic materials and components
311 Electrical and electronic measurements - General terms relating to measurements
312 Electrical and electronic measurements - General terms relating to electrical measurements
313 Electrical and electronic measurements - Types of electrical measuring instruments
314 Electrical and electronic measurements - Specific terms according to the type of instrument
321 Instrument transformers
351 Control technology
371 Telecontrol
395 Nuclear instrumentation: Physical phenomena, basic concepts, instruments, systems, equipment and detectors
411 Rotating machinery
415 Wind turbine generator systems
421 Power transformers and reactors
426 Equipment for explosive atmospheres
431 Transductors
436 Power capacitors
441 Switchgear, controlgear and fuses
442 Electrical accessories
444 Elementary relays
445 Time relays
447 Measuring relays
448 Power system protection
461 Electric cables
466 Overhead lines
471 Insulators
482 Primary and secondary cells and batteries
511 Nano-enabled electrotechnical products and systems
521 Semiconductor devices and integrated circuits
531 Electronic tubes
541 Printed circuits
551 Power electronics
561 Piezoelectric devices for frequency control and selection
581 Electromechanical components for electronic equipment
601 Generation, transmission and distribution of electricity - General
602 Generation, transmission and distribution of electricity - Generation
603 Generation, transmission and distribution of electricity - Power systems planning and management
605 Generation, transmission and distribution of electricity - Substations
614 Generation, transmission and distribution of electricity - Operation
617 Organization/Market of electricity
651 Live working
691 Tariffs for electricity
692 Generation, transmission and distribution of electrical energy – Dependability and quality of service of electric power systems
701 Telecommunications, channels and networks
702 Oscillations, signals and related devices
704 Transmission
705 Radio wave propagation
712 Antennas
713 Radiocommunications: transmitters, receivers, networks and operation
714 Switching and signalling in telecommunications
715 Telecommunication networks, teletraffic and operation
716 Integrated services digital network (ISDN) - Part 1: General aspects
721 Telegraphy, facsimile and data communication
722 Telephony
723 Broadcasting: Sound, television, data
725 Space radiocommunications
726 Transmission lines and waveguides
731 Optical fibre communication
732 Computer network technology
801 Acoustics and electroacoustics
802 Ultrasonics
806 Recording and reproduction of audio and video
807 Digital recording of audio and video signals
808 Video cameras for non-broadcasting
811 Electric traction
815 Superconductivity
821 Signalling and security apparatus for railways
826 Electrical installations
841 Industrial electroheat
845 Lighting
851 Electric welding
871 Active assisted living (AAL)
881 Radiology and radiological physics
891 Electrobiology
901 Standardization
902 Conformity assessment
903 Risk assessment
904 Environmental standardization for electrical and electronic products and systems

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