... of heavy duty medium speed (500-600rpm) gas-fueled reciprocating engines, packaged generator sets, and cogeneration units for power generation. JAE ... of efficiency, durability, and reliability. Main Specification for JAE Natural Gas Generator Set Model of GeneratorRated Speed (r/min)Rated Power ... technology alternator, Option: LEROYSOMER(France),Mingyu(China). Natural Gas Generator Set 500-2000KW