... , 300V, 450V, 600V(For 450-380KV,should be used with potential transformer whose secondary voltage 100V).Moving Coil Instruments DC Ammeter:Model ... , 5A, 7.5A, 10A, 20A, 30A, 50A, 75,100A (used with Shunt)Note: For 60/75/100A direct meters, the class ... , 250V, 300V, 400V, 450V, 600VNote: Over 6000V should be used with Ext. Resistor. (Rated current 5mA).