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Table 1-3. Description of Major Components, PU-798, PU-798A, PU-799 and PU-799A
CHAPTER 2 OPERATING INSTRUCTIONS

TM-9-6115-660-13P Power Plant Diesel Engine Driven 1-Ton Trailer Mounted (With Racks) 3Kw 60 Hz AN/MJQ-42 Manual
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TM 9-6115-660-13&P Table 1-5.  Tabulated Data for Power Plants/Power Units - continued Data PU-798A PU-799A Overall length, inches (cm) 135.0 (342.9) 135.0 (342.9) Overall width, inches (cm) 86.0 (218.4) 86.0 (218.4) Overall height, inches (cm) 66.3 (168.4) 66.3 (168.4) Operational weight, pounds (kg) Shipping weight, pounds (kg) 2480 (1124.9) 2510 (1138.5) Section III.  PRINCIPLES OF OPERATION 1-13.  FUNCTIONAL DESCRIPTION. 1-13.1.    Power  Plant  Functional  Description.    The  Power  Plants  are  mobile.    The  power  source  for  the  AN/MJQ-37 power  plant  is  two  DOD  Model  MEP-803A,  60  Hz,  Tactical  Quiet,  10  kW  Generator  Sets.    The  power  source  for  the AN/MJQ-38  power  plant  is  two  DOD  Model  MEP-813A,  400  Hz,  Tactical  Quiet  10  kW  Generator  Sets.    Generators  for each power plant are mounted on a single modified M103A3 2-wheel 1 1/2 ton trailer.  Each generator set consists of a liquid-cooled  diesel  engine,  brushless  generator,  excitation  system,  speed  governing  system,  fuel  system,  24-volt  direct cu-rent starting system, control system, and malfunction protection system.  The generator set has a voltage reconnection switch that allows either of three output configurations: 120-volt, single phase, 2-wire; 120/240-volt, single phase, 3-wire; or 120/208-volt, three phase, 4-wire.  Electrical power to the supported system or equipment is supplied through a switch box assembly.    The  switch  box  assembly  is  connected  between  the  two  generator  sets  by  power  cables.    The  switch  box enables transfer of the load from one generator set to the other without interruption of power.  The system or equipment load cable may be connected to the switch box by either of two arrangements.  One way is to connect a load cable to the switch box output connector.  The other way is to connect a load cable to the switch box load terminals. 1-13.2  Power Unit  Functional  Description.    The  Power  Units  are  mobile.    PU-798  and  PU-798A  each  use  one  DOD Model MEP-803A, Tactical Quiet, 60 Hz, 10 kW Generator Set.  PU-799 and PU-799A each use one DOD Model MEP- 813A,  Tactical  Quiet,  400  Hz,  10  kW  Generator  Set.    The  generator  set  for  each  power  unit  is  mounted  on  a  modified M116A3, 2-wheel, 1-ton trailer (PU-798 and PU-799) or a modified high mobility, 2-wheel trailer (PU-798A and PU-799A). The  generator  sets  consist  of  a  liquid-cooled  diesel  engine,  brushless  generator,  excitation  system,  speed  governing system,  fuel  system,  24-volt  direct  current  starting  system,  control  system,  and  malfunction  protection  system.    The generator set has a voltage reconnection switch that allows either of three output configuration,: 120-volt, single phase, 2- wire; 120/240-volt, single phase, 3-wire; or 120/208-volt, three phase, 4-wile.  System or equipment load cables are to be connected to the load terminals on the generator set output panel. 1-14.  RELATED TECHNICAL MANUALS. Refer to Appendix A for related technical manuals and lubrication orders. Change 2  1-9/(1-10 Blank)







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