Asia's Best Welding Machine Parameters Specification: Rated Input Voltage(V) AC220V±15% 1P AC380V±15% 1P Rated Input Current(A) 37/33 Input Frequency(HZ) 50/60 Rated Input Power(KVA) 11/17.1 Current Range(A) 20-190(220V) 20-250(380V) Open Circuit Voltage(V) 65(220V) 56.5(380V) Duty cycle at maximum current 60%@40℃ Efficiency(%) 80 Power Factor 0.73 Protection Grade IP21 Weight(kg) 15.5 Electrode Diameter(mm) 1.6-4.0 ***6 Months Limited Warranty