BS 764-1954 标准详情
- 标准号:BS 764-1954
- 中文标题:规格,自动切换接触的应急照明系统
- 英文标题:Specification. Automatic change-over contactors for emergency lighting systems
- 标准类别:英国标准
- 发布日期:
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-p
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