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Inverter AC DC TIG Welding Machine: Square Wave Welder(WSE-315II) Main Features : 1.Can use DC to weld stainless steel, alloy steel, carbon steel, copper and non-ferrous metals; also can use AC to weld aluminum and aluminum alloy. 2.Protection for over-voltage and over-current. 3.Digital current show, convenient. 4.With Remote Foot Current Control, convenient for work of long distance and high altitude. 5.Small in size, light in weight and less noise. 6.High efficiency and energy saving. ParameterMODELWSE-315IIRated Input Voltage(V) AC380±10% 50/60Hz(3 Phase)Rated Input Current(A) 19Rated Input Capacity(KVA) 10Rated output Current(A) 315Output Current Range(A) 20-315No-Load Voltage(V) 56Rated Output Voltage(V) 25Pre-Flow(S) 0-2Clean Width(%) 20-80AttenuationTime 0-5Post-flowTime(S) 2-10ARC Initiating Model High FrequencyEffciency(%) ≥85Load Duty Cycle(%) 60Power Factor ≥93Insulation Grade BSafeguard Grade IP21Weight(kg) 33Dimensions(mm) 540×360×300Welding thickness(mm) 15