... simple circuit, compact, light, high efficiency and energy saving. Electrode welding machine Advanced invert technology, simple circuit, compact, light, high efficiency and ... outdoor working. ZX7 IGBT Model ParameterZX7 200ZX7 250ZX7 315Power supply(V) AC220V 15% AC380V 15% AC380V 15% Frequency(Hz)50 ... power capacity(KVA)79.612.8 No load voltage(V)616369 Output current adjustment(A)20-20020-25020-315 ...