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IEC
IEC 61439-4:2023 EXV
En Vigor
2023-10-17
Low-voltage switchgear and controlgear assemblies - Part 4: Particular
requirements for assemblies for construction sites (ACS)
IEC
IEC 61290-4-1:2016
En Vigor
2016-09-26
Optical amplifiers - Test methods - Part 4-1: Gain transient parameters
- Two-wavelength method
IEC
IEC 60794-2-21:2019 RLV
En Vigor
2019-04-12
Optical fibre cables - Part 2-21: Indoor cables - Detailed specification
for multi-fibre optical distribution cables for use in premises cabling
IEC
IEC 63522-56:2025
En Vigor
2025-04-23
Electrical relays - Tests and measurements - Part 56: Ball Pressure test
