DEVELOPMENT AND TEST REPORT OF THE 3-KW, 60-CYCLE, MILITARY STANDARD ENGINE-DRIVEN GENERATOR SET, MODEL SF 3.0 MD,

Abstract : The development and engineer design testing is reported of a 3-kw, 60-cycle, gasoline enginedriven generator set for general use with the field Army. The generator set is suitable for field use by the Army. The engine-cooling fan and air control shroud design is poor for high ambient operation, particularly high ambient trailer operation, because a large portion of the engine air exhaust is spilled out at the bottom of the fan housing. The generator set does not meet the voltage dip and rise requirement (= 30 percent) without the use of the voltage suppression circuit. The generator exciter is unnecessarily complicated and is expensive to build; it could be redesigned readily to reduce cost and complexity without appreciable effect on performance. (Author)