... operation cost: Natural gas has a rich reserve with low cost and a high Rate of return 5) High profit: Low operation ... alternators of Leroy Somer / Engga 7) Well performed control system, high quality monitor instrument, with sound And light alarm devices, auto shutdown ... , lube-oil temperature, lube-oil Pressure, exhaust temperature 10) Gas consumption: Less than 0.33cbm/kWh 11) Supply connection: 3 ...