... semi-automatic welding.♦ Combining AC and DC in one welder,no noise. ♦ Square wave power,stable current,easy wire feeding,beautiful ... welding shape.♦ Inside with over-heat,over-voltage,over-current under-voltage protection function,safety and reliable.♦ High duty ... voltage(V)686868Rated input capacity(KVA)6.38.511.5Output current range( Amp)10-20010-25010-315Rated duty cycle (%)606060Insulation ...