... -excited, IP23, insulation class H alternator4. 40°C radiator as standard, 50°C is optional5.Key start panel control system as ... standard, digital auto-start panel is optional6.8- ... rpm)9.4/1500Speed GovernorElectricCooling SystemWater-cooled, 4°C Radiator As Standard, 50°C Is OptionalSpeed Stability(%)≤5%Total Lubrication System Capacity ...