
【国外标准】 Air-break knife switches and air-break isolating switches for voltages not exceeding 660 volts excluding totally-enclosed and flame proof types
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2023-02-15
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适用范围:
暂无
标准号:
BS 109:1921
标准名称:
Air-break knife switches and air-break isolating switches for voltages not exceeding 660 volts excluding totally-enclosed and flame proof types
英文名称:
Air-break knife switches and air-break isolating switches for voltages not exceeding 660 volts excluding totally-enclosed and flame proof types标准状态:
被代替-
发布日期:
1933-01-30 -
实施日期:
出版语种:
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