... Camda Cummins Series Diesel Generator SetGen-set adopt 3 phases-4 lines output, with output 380V/220V, Frequency 50HZ/60HZ, ... from no load to full load Rotating speed down within 4.5%Under any conditions mentioned above, steady voltage regulating ... no exceed ±0.25% EngineHeavy load, durable 4-stroke water-cooled engine, excellent transient response. 4 valves each cylinder, stainless crankshaft, bolt, ...