... circuit, compact, light, high efficiency and energy saving. Electrode welding machine Advanced invert technology, simple circuit, compact, light, high efficiency ... Model ParameterZX7 200ZX7 250ZX7 315Power supply(V) AC220V 15% AC380V 15% AC380V 15% Frequency(Hz)50/6050/6050/60Rated input power ... capacity(KVA)79.612.8 No load voltage(V) ...