... systemDetailed Product Description Standard Configuration of Natural Gas Generating Set: Engine: 1,water cooling , 4 stroke 2,ratiation with water tank ... . 2) Compressed air to start. 3) Standard voltage is 400/230V and the rated frquency 50HZ,with R.P.M 1500 ,3pha ... steel base with vibration pad.blue color,package :plastic wraped or wooden case. 8) Noise-proof,exhaust silencer... 9) Documents can ...