IEC 60947-1:2007
Low-voltage switchgear and controlgear - Part 1: General rules
The purpose of this standard is to harmonize as far as practicable all rules and requirements of a general nature applicable to low-voltage switchgear and controlgear in order to obtain uniformity of requirements and tests throughout the corresponding range of equipment and to avoid the need for testing to different standards.
The purpose of this standard is to harmonize as far as practicable all rules and requirements of a general nature applicable to low-voltage switchgear and controlgear in order to obtain uniformity of requirements and tests throughout the corresponding range of equipment and to avoid the need for testing to different standards.
Applies, when required by the relevant product standard, to switchgear and controlgear hereinafter referred to as "equipment" and intended to be connected to circuits, the rated voltage of which does not exceed 1 000 V a.c. or 1 500 V d.c. It does not apply to low-voltage switchgear and controlgear assemblies which are dealt with in IEC 60439. The object of this standard is to state those general rules and requirements which are common to low-voltage equipment as defined in 1.1, including for example: - definitions; - characteristics; - information supplied with the equipment; - normal service, mounting and transport conditions; - constructional and performance requirements; - verification of characteristics and performance
IEC 60947-1:2020 applies, when required by the relevant product standard, to low-voltage switchgear and controlgear hereinafter referred to as "equipment" or ?device? and intended to be connected to circuits, the rated voltage of which does not exceed 1 000 V AC or 1 500 V DC. This document states the general rules and common safety requirements for low-voltage switchgear and controlgear, including: - definitions; - characteristics; - information supplied with the equipment; - normal service, mounting and transport conditions, decommissioning and dismantling; - constructional and performance requirements; - verification of characteristics and performance; - energy efficiency aspects (see Annex V); - environmental aspects. This sixth edition cancels and replaces the fifth edition published in 2007, Amendment 1:2010 and Amendment 2:2014. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: ? DC values testing improvement; ? update of EMC tests; ? Annex B deletion; ? update of requirements for environmental tests (Table Q.1); ? improvement of Annex R (new examples); ? deletion of digital input Type 2, and introduction of Type 3 in Annex S; ? example for materials declaration (Annex W); ? new Annex X (co-ordination between short-circuit protective devices associated in the same circuit) created. The contents of the corrigendum of December 2022 and April 2024 have been included in this copy.
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