... interference, good power adjustment ItemMIG/TIG/MMA-200MIG/TIG/MMA-250 Input voltage(V) ±10%AC~220AC~220 Frequency(Hz)50 ... output voltang(V)5252 Output current range(A)20-20020-250 Power factor0.930.93 No-load loss(W)4040 Duty ... (110V/230V/415V etc.) Three functions welder-MIG/TIG/MMA-250 inverter welder