... 400-2, BX3-500-2, BX3-630-2 moving coil AC welding machineCharacteristics & Applications: Manual operated, single, ... one phase moving coil AC Arc welding power.Mainly used in welding some ... and other metal structure industry.The transformer in this machine is compact structure, stable arc, low noise, small ... 690*460*850mm BX3-630-2 moving coil AC welding machine