This specification covers one type motor-generator for converting 60-hertz (Hz) power to 400-Hz power. The motor input current is to be 3 phase, 416/208 volt ( V i ,60 142, 4 wirec and the alternator output is to be 10 kilowatts , 0.8 power factor lagging, 400 Hz,3 phase- 4 wire 120/208 V, reconnectible to 240/416 V.