... gas generator set. Low speed gas engine with Siemens generator. JAE Heavy Duty Medium Speed (500-600rpm) Gas Engines & Power Generator ... (500-600rpm) gas-fueled reciprocating engines, packaged generator sets, and cogeneration ... natural gas or a variety of other gases (e.g., biogas, landfill gas, coal mine gas, sewage gas ... . Main Specification for JAE Natural Gas Generator Set Model of GeneratorRated Speed ...