... passive power factor correction, and high in power factor5. Easy arc starting, stable welding arc, high quality welding6. Suitable for welding carbon steel, copper, titanium ... Long operation time of tungsten electrode, especially for automatic welding and robot welding.Main technical parameters: ModelTIG-315PInput power voltage3 phase 380V ... (mm)571*350*580 Inverter AC DC Pulse TIG welding machine