... , 300V, 450V, 600V(For 450-380KV, should be used with potential transformer whose secondary voltage 100V). Moving coil Instruments DC Ameters Model ... , 5A, 7.5A, 10A, 20A, 30A, 50A, 75A, 100A (use with shunt)Note: for 60/75/10A direct meters,. the clsss ... , 300V, 400V, 450V, 500V, 600VNote: over 6000V should be used with Ext.Resistor.(rated current 5mA)