91亚洲激情|国产主播一区二区三区|久久人妻少妇嫩草av无码专区|日韩一区二区三区电影|中文字幕少妇人妻精品|免费在线观看黄片大全|一本一本久久久精品综合不卡|粗暴video蹂躏hd

General

FN5-12R(L) Model indoor AC HV load break switch-fuse combination apparatus is developed and designed based on international technology and national power supply requirement, it passes all type tests and trial-operation inspections. The apparatus conforms to IEC62271-105: AC load break switch and fuse combination apparatus. (1990 edition) and GB3804: 3-63kV AC HV load break switch. Compare to international product, it keeps up with technical level with small volume and light weight. It is applicable in ring main unit and prefabricated substations as well as 10kV line and power distribution system. The product realizes three working positions: power making, power breaking and earth, and effectively avoid the downstream equipment operating under phase failure.