BSI - BS 764
Specification. Automatic change-over contactors for emergency lighting systems
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| Organization: | BSI |
| Publication Date: | 8 July 1954 |
| Status: | inactive |
| ICS Code (Switches): | 29.120.40 |
scope:
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. Performance and constructional details of double-pole contactors for low voltages; range of standard current ratings.
Document History
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...
BS 764
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....