... aluminum alloy and copper aluminum zinc plate. The insulating medium of medium voltage switch device: SF6, atmosphere and vacuum. Transformer: ... matter, the verticality is no more than 3 degree.Technical Specification No.ItemUnitHigh voltage unitTransformerLow voltage unit1Rated voltagekV1212/0.40.42Rated ... , the capacity is : 30, 50, 80,100,125, 160,200,250, 315, 400,500, 630, 800,1000, 1250, 1600kV/ ...