Characteristic: IGBT inverter control, AC/DC TIG welding HF arc-starting impulse control and strong welding permeability Be satisfied requirements of welding technological Current can be adjusted by food control Be able to weld mild steel, stainless steel, stainless steel copper and titanium metal by DC function, also be able to weld aluminum and aluminum-alloy by AC function Technical parameter: Input voltage/frequency: 380V AC, 50/60Hz Rated input capacity: 8.4kVA Rated welding current: 300A Rated duty cycle: 60% Current range: 20 to 300A (AC)/10 to 300A (DC) Rated no-load voltage: 70V Initial/crater current: 10 to 300A Pulse width: 10 to 90% AC cleaning: 30 to 70% Pulse frequency: 0.5 to 500Hz TIG spot time: 0.1 to 5s Down slope time: 0.1 to 5s After flow time: 2 to 25s Weight: 50kg External dimensions: 315 x 750 x 570mm