When the welding machine works, the contactor sends out a big arc. What is the cause of the main power supply trip?
When the welder is started, the current is relatively large, and the rated current of the total switch may be smaller than the starting current of the welding machine
Contactor control for welding machine? No, how big will it be, 100A?You see, it's possible that the primary coil is short circuited
Power mismatchCoil short?Measuring input and output resistanceConnect a 1000 Watt lamp to the input to see if the input to output voltage is normal
