亚洲AV成人一区二区三区天堂_国产精品亚洲二区在线观 ,欧美人与动牲交A欧美_国产曰批视频免费观看完_国产精 ,国产午夜成人无码免费看_久久人人妻人人做人人爱_国产

GCK Low-voltage switchgear   Low-voltage switchgear 

It is suitable for three-phase four-wire and three-phase five-wire power systems with three-phase AC 50, (60) Hz, rated working voltage and rated insulation voltage of 380 (400) V, 660 V and rated current of 6300 A and below, and is widely used in power plants, substations, industrial and mining enterprises, buildings and hotels, airports, terminals and communication centres such as radio and television, as power generation, power transmission and distribution, electrical energy conversion and power distribution of electrical energy consumption. It is used as a PC and motor control centre MCC in power generation, transmission and distribution, power conversion and power consumption.