BS EN 60439-3:1991 Specification for low-voltage switchgear and controlgear assemblies. Particular requirements for low-voltage switchgear and controlgear assemblies intended to be installed in places where unskilled persons have access to their use - Distribution boards (AMD 8302) (AMD 13466) (AMD Corrigendum 16213)

Publication Year

1991

Document Status

Withdrawn

Abstract

Gives supplementary requirements for such enclosed distribution boards (DBU), which are stationary, type tested assemblies (TTA) for indoor use, containing protective devices and intended for use either in domestic (household) applications or in other places where unskilled persons have access for their use. Control and/or signalling devices may also be included. They are for use on a.c., with a nominal voltage to earth not exceeding 300V. The outgoing circuits contain short-circuit protective devices, each having a rated current not exceeding 125A with a total incoming load current not exceeding 250A. The nominal voltage to earth in an IT system is taken as the nominal voltage of the system. Unskilled persons normally have access to these assemblies, e.g. for switching operations and for replacing fuse-links.

Document History

Supersedes BS 5486-13:1989. Amendment 8302 dated August 1994. Amendment 13466 dated May 2002. Amendment 16213 is Corrigendum No.1 dated June 2006.

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