1) 220V / 380V / 440V Input power combined use
2) Perform optimized arc start with soft start control
3) Optimum conditions can be set by improved the whole area controlling characteristics
4) Even unskilled person can do welding operation with easy current condition setting
5) Feedback circuit is supplemented (insulation shielding circuit applied)

1) Arc stability is improved with improved wave form control circuit
2) Improved high bead formation of the over-lap part problem such as excessive penetration or circumferential welding due to the thick bead of the welding start part 
3) Enhanced output stability for input voltage changes
4) Enhanced prevention of wire pulling
5) Stability of the feeding speed for the change in length of the control cable
6) Stabilized feeding speed