BS 764-1990 标准详情
- 标准号:BS 764-1990
- 中文标题:紧急照明系统用的自动转换接触器规范
- 英文标题:specification for automatic change-over contactors for emergency lighting systems
- 标准类别:英国标准
- 发布日期:1990-05-31
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 sa
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