JN15-12 / 31,5 крытый заземлитель высокого напряжения

General The JN 15-12 indoor high-voltearthing switch is in line with GB 1985 and IEC60129, it is applied to the power system of 12Kv/40.5kV and lower. AC 50Hz for mating every model of high-volt switch cabinet in order to realize function of earthing protection. This switch is entirety type ground switch,it is composed of chassis,post insulator,fixed contact,moving contact,chief axis and fast spring ect..Additonally,the electrid indication appliance can be provided for customer if customers need it. Type meaning. Technical parameter Item unit Data Rated voltge kV 12 40.5 Rated little withstand current kA 31.5. 40 31.5 Rated short-circuit duration S 4 4 Rated short-circuit close current kA 80,100 80 Rated peak value withstand current kA 80.100 80 Interelectrode distance mm 150,165,210,230,250,275 350,385,460 Rated insulation level 1 min industrial fequency withstand voltage kV 40/49 95 Thunder impulse withstand voltage kV 75/85 185