AS 2989-1987被替代
Electrical equipment for coal mines- High voltage circuit breaking and isolating devices for voltages up to 11 000 V a.c.
出版：Standards Australia
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基本信息
标准编号： AS 2989-1987
标准类别：Standard
出版单位：Standards Australia
标准页数：13
标准简介
Specifies requirements for an assembly which incorporates a high voltage circuit breaker and an isolating device. It is limited to systems below ground at voltages up to and including 11 000 V a.c. The necessary provisions for isolation, safety earthing and regulatory inspection and testing procedures are also included.
本标准替代的旧标准
替代本标准的新标准
