... MethodDC24V Electrical startingAlternator BrandMARATHONModelMX-1240-4Number of Phase3Connecting Type3 Phase and 4 WiresNumber of Bearing1Protection GradeIP23Altitude≤1000mExciter TypeBrushless ,Self-exciting, AVR ... voltage,current, frequency, water temperature, oil pressure. The genset with low oil pressure,high water temperature,over speed,over load protection ...