Description

This Standard lays down the definitions and states the service conditions, construction requirements, technical characteristics and verification requirements for low-voltage switchgear and controlgear assemblies.

This Standard cannot be used alone to specify an assembly or used for a purpose of determining conformity. Assemblies shall comply with the relevant part of the 61439 series.

Adopted with national modifications from IEC 61439-1, Ed. 2.0 (2011).

Scope

This Standard applies to low-voltage switchgear and controlgear assemblies only when required by the relevant assembly standard as follows:

• assemblies for which the rated voltage does not exceed 1 000 V in case of a.c. or 1 500 V in case of d.c.;
• stationary or movable assemblies with or without enclosure;
• assemblies intended for use in connection with the generation, transmission, distribution and conversion of electric energy, and for the control of electric energy consuming equipment;
• assemblies designed for use under special service conditions, for example in ships and in rail vehicles provided that the other relevant specific requirements are complied with;
• assemblies designed for electrical equipment of machines provided that the other relevant specific requirements are complied with.