... 30kW are converted from Cummins diesel engines. Natural Gas (NG) Generating Sets 10-500kw ---Powered by Cummins & MPS Gas Engines---(60Hz, PF0.8, 3P4W, 400V/230V ... 18 months for standby gas gensets/CHPs, whichever comes first. 8,000 hours for continuous running gas gensets/CHPs with European configuration. MiracleGen Natural Gas Generating Sets 10-1000kW