The 146-246 Series POWERSTAT® Variable Transformers are available in single and three phase, manually operated and motor-driven assemblies. 146 Series units operate from 120 volt lines and 246 Series units from 240 vol l lines. The rated output for constant current loads is 30 amperes for the 146 Series and 15 amperes for the 246 Series. For constant impedance loads, the maximum rated output current at line voltage is increased to 35 amperes for 146 types and 19 amperes for 246 types. Both Series incorporate POWERKOTE coils for longer life and increased resistance to damage.