Weldmax Inverter DC MMA Welding Machine ZX7-400T Parameter/Model    : ZX7-400T Power Working Voltage (V): AC 380± 10% Frewuency (Hz): 50/60 Rated Input current: 26 No-Load Voltage : 67 Peak Voltage (A): 76 Output Current Adjusting (A): 40-400 Rated Duty Cycle (%): 60 Power Factor (cos ɸ): 0.94 Effiency (%): IP21S Dimensions (Lxwxh): 471x252x468mm Weight (Kg): 21.5 Insulator Grade    : H