*New style energy saving 3 phase welding power source,adopts 3 phase connection rectify mode. *Adopts primary segment connection to increase the flux leakage,change the primary tap to adjust welding current,hight efficiency and low no-load loss. *The structure is simple and reasonable,easy to operate,convenient to maintain,low noise. *Suitable for welding of low alloy steel,stainless steel,wear-resisting steel and castiron.