ZX7 Manual Arc Welder adopts MOSFET invert technology, high frequency arc start design. It can balance automatic when voltage is waving, with high resist to electrical wave (V±15%). It has high efficiency, small unload loss, save over 40% energy than the traditional Welder. It is small and light, easily work in high altitude. It is easily arc, small flash, low noise, stable welding arc, wonderful welding shape. With inner stalling protective circuit of over-heat, over-current, over-voltage and under-voltage, working safe is reliable. 2. Specification ParameterZX7-160ZX7-200ZX7-250Rated input voltage(V)AC220V±10%AC220V±10%AC380V±15%Rated input current (A)243215Rated input capacity(KVA)5.37.110No-load voltage(V)566070Output current(A)20-16020-20020-250Rated input voltage(V)26.42830Drive adjustment(A)-0-70Duty cycle(%)60Efficiency(%)85Power factor0.93Weight(kg)71517Overall dimension(mm)370 x160 x 200475 x 205 x 300Welding thickness(mm)1.5-51.5-10 3. SpecificationParameterZX7-315ZX7-400ZX7-500Rated input voltage(V)AC380V±15%Rated input current (A)202832Rated input capacity(KVA)131826No-load voltage(V)70Output current(A)20-31520-40020-500Rated input voltage(V)32.63640Drive adjustment(A)0-100Duty cycle(%)60Efficiency(%)85Power factor0.93Weight(kg)303030Overall dimension(mm)550 x 326 x 362Welding thickness(mm)1.5-52-202-30