*Minimizing,lightness,high quality and energy-saving *Good arc-starting and arc force,it can e resist disturb stable arc and little spatter *High welding quality,deep bath and strong strength *Auto protection of over-voltage and over-current *Be able to work continuously,it can balan automatic when voltage is waving *Suit for welding all kind of basic welding rod *Be able to weld cellulose rod Item MMA/ZX7-140 Input power voltage ( V ) 220?0% Rate input power capacity ( KVA ) 7 Input voltage frequency ( HZ ) 50/60 No-load voltage ( V ) 63 Output current range (A) 30-200 Raged output voltage (V) 28 Duty cycle (%) 60 Efficiency (%) 85 Insulation class F Weight (Kg) 8 Dimension 371?55?95 Protection class IP21