BSI - BS 764
Specification for Automatic Change-Over Contactors for Emergency Lighting Systems
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| Organization: | BSI |
| Publication Date: | 31 May 1990 |
| Status: | active |
| Page Count: | 14 |
| ICS Code (Switches): | 29.120.40 |
scope:
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
BS 764
May 31, 1990
Specification for Automatic Change-Over Contactors for Emergency Lighting Systems
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...
July 8, 1954
Specification. Automatic change-over contactors for emergency lighting systems
Contactors which automatically transfer circuits from the normal source of supply to an alternative source when the normal source fails; reconnection is automatic when normal conditions are restored....
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