Section III. PRINCIPLES OF OPERATION

TM 9-6115-659-13&P 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 each power plant is two DOD Model MEP-802A 60 Hz Tactical Quiet 5 kW Generator Sets mounted on a single modified 2-wheel trailer. The AN/MJQ-35 is mounted on a modified Model M116A3, 1 ton, trailer. The AN/MJQ-35A is mounted on a modified high mobility trailer. The AN/MJQ-36 is mounted on a modified Model M103A3 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 current 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. The power source is one Tactical Quiet 5 kW Generator Set mounted on either a modified Model M116A3, 2-wheel, 1-ton trailer (PU-797) or a modified high mobility trailer (PU-797A). The generator set consists 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 configurations: 120-volt, single phase, 2-wire; 120/240-volt, single phase, 3-wire; or 120/208-volt, three phase, 4-wire. The Power Unit uses a DOD Model 802A Generator Set operating at 60 Hz. 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 1-11/(1-12 Blank)