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Product Name: TIG250P AC/DC Digital display, 2T/4T exchange function AC/DC, pulse, TIG and MMA are available Adjustable pulse frequency and pulse current output,suitable for many kinds of welding requirements. Stable arc,beautiful welding surface and easy operation. Current can be adjusted by foot control, fasten gas connector Minimizing,lightness and low noise. Be able to weld mild steel,stainless steel,copper and Titanor metal etc. by DC function. Which also be able to weld aluminium and aluminium-alloy by AC function Input power voltage (V): AC380V+-15% Input voltage frequency(Hz):50/60 Rated input current (A):9.6 Rate input power capacity(KVA):6.3 Output current range(A):20-250 No-load voltage(V):56 Rated output voltage (V): 20 Pre-flow time(S):2+-0.5 Current pulse frequency(Hz):60 Clean width(%):20-80 Slope-down time(S):0-5 Pulse width(%):10-90 Range of pulse range(A):20-250 Range of pulse frequency(Hz):1-70 Post-gas time(S):2-10 Foot control: YES Arc-sarting:HF Efficiency (%): 85