Using IGBT module, inverter frequency of 18 KHz, dynamic fast response and easy arc starting, arc stability performance, CharacteristicsUsing IGBT module, inverter frequency of 18 KHz, ... protected.No-load power consumption of less than 100 W, as compared with conventional welding machine, to save electricity by ... ×670650×320×670650×320×670650×320×670 IGBT Inverter DC arc welding machine(ZX7 series)