... : Class1.5Specification:30V, 50V, 75V, 100V, 120V, 150V, 250V, 300V, 450V, 600V(For 450-380KV,should be used with potential transformer ... , 20V, 30V, 50V, 75V, 100V, 120V, 150V, 200V, 250V, 300V, 400V, 450V, 600VNote: Over 6000V should be used with Ext. Resistor. (Rated ...