TM 5-6115-593-12 TO 35C2-3-463-1 Under/Overvoltage Device Manufacturer ................... Wilmar Electronics Inc.  (77-11003)* Part Number  ................... 250-12X Voltage rating................... 120V AC, single phase, 50 to 400 Hz Undervoltage trip.............. .95 to 120V, adjustable Overvoltage trip  .............. .120 to 140V, adjustable Contacts  ......................... SPDT Underfrequency Device Manufacturer ................... Wilmar Electronics Inc.  (77-11002)* Part number .................... 20-050-17X Voltage rating .................. 120V AC, 50/60 Hz Trip  ................................. 50 Hz - adjust- able 45 - 50 Hz 60 Hz - adjust- able 54 - 60 Hz Contacts  ......................... SPDT Overfrequency Device Manufacturer ................... Wilmar Electronics Inc.  (77-11001)* Part number .................... 20-060-5X Voltage rating .................. 120V AC, 50/60 Hz Trip  ................................. 50 Hz - adjust- able 50 - 55 Hz 60 Hz - adjust- able 60 - 66 Hz Contacts  ......................... SPDT Speed/Voltage Matching Synchronizer Manufacturer ................... Konell Enterprise (77-11006)* Part number .................... SRM-60EV-MSTG DOD Drawing Number ..... .77-11006 Voltage rating .................. 120V AC, Single phase, 50/60 Hz Input voltages  ........................ One from gener- ator.  One from buss output Automatic mode .............. Frequency differ- ential ±0.1 Hz, phase differen- tial ±10 degrees voltage differen- tial ±10 percent Control Relay Manufacturer ................... Westinghouse Electric Corp. Voltage rating .................. 110/120V AC, 50/60 Hz Coil Burden  ..................... 96VA Contact rating  ................. 120V AC, 6 amps inductive Type  ............................... AR412A, three- *DOD Drawing Number pole, 2-NC, 1-NO AR420A, (77- 11005)* two- pole, 2-NO AR401A, (77- 11004)* single pole, 1-NC DOD Drawing Number............ 77-11007 (Respectively) ................. 77-11005 77-11004 f.  Radiator/Fan Motor DOD Drawing Number ........... 76-11059 Type ...................................... Remote radiator, electric motor driven Heat rejection  ........................ 500 kw output: at generator 390.0 BTU/sec - set output 23,400 BTU/min 550 kw output: 429.1 BTU/sec - 25 750 BTU/min Top tank  ................................ 200°F (93°C) temperature at 500 kw output 210°F (99°C) at 550 kw output Motor ..................................... 15 hp NOTE Unit   to   operate   at   any   loads   between   no load and rated load at the following line-to- line voltages. Voltage operating  .................. Between 395 and range......................................  500 volts for the 240/416 volt connection and between 197 and 250 volts for the 120/208 volt connection for 60 Hz operation. Between 380 and 426 volts for the 240/416 volt connection and between 190 and 213 volts for the 120/208 volt connection for 50 Hz operation g.  Engine Preheat System DOD Drawing Number ........... 76-11092 Type ...................................... Electric, thermo- statically controlled Ambient temperature .............. 32 to 125°F (6 range, starting to 52°C); -25 to 125°F (-32 to 52°C) with housing kit) 1-13