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Homepage>BS Standards>29 ELECTRICAL ENGINEERING>29.130 Switchgear and controlgear>29.130.20 Low voltage switchgear and controlgear>BS EN IEC 61439-1:2021 Low-voltage switchgear and controlgear assemblies General rules
immediate downloadReleased: 2021-05-24
BS EN IEC 61439-1:2021 Low-voltage switchgear and controlgear assemblies General rules

BS EN IEC 61439-1:2021

Low-voltage switchgear and controlgear assemblies General rules

CURRENCY
LANGUAGE
English
Standard number:BS EN IEC 61439-1:2021
Pages:170
Released:2021-05-24
ISBN:978 0 580 86718 7
Status:Standard
DESCRIPTION

BS EN IEC 61439-1:2021


This standard BS EN IEC 61439-1:2021 Low-voltage switchgear and controlgear assemblies is classified in these ICS categories:
  • 29.130.20 Low voltage switchgear and controlgear
IEC 61439-1:2020 is available as IEC 61439-1:2020 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.

IEC 61439-1:2020 lays down the general definitions and service conditions, construction requirements, technical characteristics and verification requirements for low-voltage switchgear and controlgear assemblies. NOTE Throughout this document, the term assembly(s) (see 3.1.1) is used for a low-voltage switchgear and controlgear assembly(s). For the purpose of determining assembly conformity, the requirements of the relevant part of the IEC 61439 series, Part 2 onwards, apply together with the cited requirements of this document. For assemblies not covered by Part 3 onward, Part 2 applies. 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:
a) clarification that power electric converter systems, switch mode power supplies, uninterruptable power supplies and adjustable speed power drive systems are tested to their particular products standard, but when they are incorporated in assemblies the incorporation is in accordance with the IEC 61439 series of standards;
b) introduction of a group rated current for circuits within a loaded assembly and the refocusing of temperature-rise verification on this new characteristic;
c) addition of requirements in respect of DC;
d) introduction of the concept of class I and class II assemblies regarding protection against electric shock.


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