BS 764:1990 - Specification for automatic change-over contactors for emergency lighting systems

BS 764:1990

Specification for automatic change-over contactors for emergency lighting systems

Status : Confirmed, Current   Published : May 1990



Design and performance requirements for d.c. and single-phase a.c. double-pole change-over contactors for low-voltages up to 250 volts and a range of standard current ratings, which are used to provide the automatic transfer of current supplied to safety lights from the normal source to an alternative source when the normal source fails; reconnection is automatic when the normal supply conditions are restored.

Standard NumberBS 764:1990
TitleSpecification for automatic change-over contactors for emergency lighting systems
StatusConfirmed, Current
Publication Date31 May 1990
Confirm Date01 May 2017
Normative References(Required to achieve compliance to this standard)No other standards are normatively referenced
Informative References(Provided for Information)No other standards are informatively referenced
ReplacesBS 764:1954
DescriptorsSingle-phase current, Contactors, Rated current, Electric contacts, High-voltage tests, Type testing, Low-voltage equipment, Lighting systems, Switches, Temperature measurement, Relays, Temperature-rise limit, Instructions for use, Force, Electrical testing, Marking, Switchgear, Making capacity, Performance, Direct current, Breaking capacity, Emergency lighting
Title in FrenchContacteurs à commutation automatique pour systèmes d'éclairage de secours
Title in GermanAutomatische Umschalter fuer Notbeleuchtungssysteme
ISBN0 580 17995 8
File Size400.1 KB

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