亚洲国产日韩欧美高清片18-国产高清在线一区二区不卡 ,国产激情欧美在线_国产日产欧美一区在线_欧美亚洲日韩 ,天天想天天干,天天舔天天射,国产干b,欧美高清一级

CDNES Low-voltage switchgear   Low-voltage switchgear 

The switchgear is suitable for power supply systems with AC 50 (60) Hz, rated working voltage and rated insulation voltage of 400V, 690V and rated current of 4000A and below in the three-phase five-wire system, and can be used in power plants, substations, industrial and mining enterprises, buildings and hotels, airports, terminals and communication centres such as radio and television, for power generation, power transmission and distribution, power conversion and control of power consumption equipment. and reactive power compensation for its main bus through capacitor compensation cabinets.