Rated input voltage(V):AC220V+/-15%,AC380V+/-15% Rated frequency(Hz):50/60 Rated input current(A):10.1 14.7 20.9 1.ApplicationAdopt developed inverter tech. DC Stick(MMA),DC TIG, DC Pulse TIG 3 functions in one machine. Available on welding carbon steel, alloy steel, stainless steel, copper, silver, titanium, ect.With functions: Gas feed in advance, Delay Gas stop, Current climbing, Current ...