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IEC

IEC 62054-21:2004/AMD1:2017
En Vigor
2017-01-30
Amendment 1 - Electricity metering (AC) - Tariff and load control - Part 21: Particular requirements for time switches
IEC

IEC 60050-121:1998
En Vigor
1998-08-19
International Electrotechnical Vocabulary (IEV) - Part 121: Electromagnetism
IEC

IEC 60050-901:2013
En Vigor
2013-11-28
International Electrotechnical Vocabulary (IEV) - Part 901: Standardization
IEC

IEC 60153-4:2022
En Vigor
2022-06-09
Hollow metallic waveguides - Part 4: Relevant specifications for circular waveguides