Variac Auto Transformer, 110V 0-300V STG-1000W Step Up and Down Variac Digital Display Autotransformer Single Phase AC Voltage Regulator Power Supply Converter Transformer for US Plug

Voltage Regulator Autotransformer load power characteristics: Output voltage：220V 150V 100V 50V 10V After operation, turn the hand wheel pointed to “zero” place and cut off the power Calculation Corresponding load voltage value the max power formula: Output load power(W)=Output volatge(V)*The max current(A) During normal operation, the regulator should be checked regularly by charcoal brush and make sure that the brush and contact parts won’t be more than the wide of two wires. Check the insulation resistance regularly, the insulation resistance between coil and base shouldn’t be less than 2mm. Please connect the ground line to regulator case