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

Publication Year

1990

Document Status

Current

Abstract

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.

Document History

Supersedes BS 764:1954.

ISBN

0580179958

Publisher Information

British Standards Institution

With over 100 years of experience the British Standards Institute is recognised as the UK’s National standards body. Their committees work with the manufacturing and service industries, government, businesses and consumers to facilitate the production of British, European and International standards.

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