IEC 61439-1:2017 PRV 
Pre release version

Low-voltage switchgear and controlgear assemblies - Part 1: General rules

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Abstract

This Final Draft International Standard is an up to 6 weeks' pre-release of the official publication. It is available for sale during its voting period: 2017-07-07 to 2017-08-18. By purchasing this FDIS now, you will automatically receive, in addition, the final publication.

IEC 61439-1:2017 lays down the general definitions and service conditions, construction requirements, technical characteristics and verification requirements for low-voltage switchgear and controlgear assemblies.
This third edition cancels and replaces the second edition published in 2011. It constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
- clarification that power electric converter systems, switch mode power supplies, uninterruptable power supplies and adjustable speed power drive systems are tested to their particular product standard, but when they are incorporated in assemblies the incorporation is in accordance with the IEC 61439 series of standards;
- addition of a method of temperature-rise verification up to 3‍ 150 A by comparison with a reference design and calculation;
- addition of temperature-rise verification of assemblies with active cooling;
- addition of requirements in respect of DC;
- general editorial review.

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Additional information

Publication typeInternational Standard
Publication date2017-07-07
Edition3.0
Available language(s)English
TC/SCTC 121/SC 121B - Low-voltage switchgear and controlgear assembliesrss
ICS29.130.20 - Low voltage switchgear and controlgear
Stability date  2022
Pages151
File size2449 KB

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