Excellent silent Generator Set 50kw 1)engine: R4105ZD ,56KW AT 1500RPM ;62KW at 1800rpm 2)alternater: Stamford 3)50hz or 60hz Excellent Silent Generator Set1) Output range: 50kw2) Engine models: R4105ZD3) Alternator: Stamford, Marathon, Leroy Somer and Chinese brand with brushless and "H" Class Insulation. 4) Water-cooled 5) 8hrs operation base tank 6) Key start / auto start7) Sound-proof / ...