TM 9-6115-658-13&P 1-8Section III. PRINCIPLES OF OPERATION 1-14 FUNCTIONAL DESCRIPTION. The Power Plants are mobile. The power source for each power plant is two DOD Model MEP-831A 60 Hz Tactical Quiet 3 kW Generator Sets mounted on a single modified M116A3, 1 ton trailer. Each generator set consists of an air-cooled, single cylinder, diesel engine, direct coupled, rotating field, synchronous 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 two output configurations: 120-volt, single phase, 2 wires; or 120/240-volt, single phase 3 wires. 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 with no interruption of power. Load cables may be connected directly to the generator set load terminals when only one generator set is to be used. 1-15 RELATED TECHNICAL MANUALS.Refer to Appendix A for related technical manuals.
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