Rated input voltage(V) :AC380V+/-15% Rated input current(A) :21 28 38 52 No-load voltage(V) :79 1. Technology parameterIt uses advanced invert technology and powerful switch design (IGBT). It has the perfect functions in over-voltage,under-voltage, over current and over-loaded. It has high efficiency, small unload loss, save over 1/3 than the traditional welder.It can blance automatic when ...