Describe Patriot Prime Power.

• A. Single-phase, 60 Hertz, 75 kilowatt, 1 generator
• B. Three-Phase, 400 Hertz, 150 kilowatt, 2 generators
• C. Three-Phase, 50 Hertz, 100 kilowatt, 3 generators
• D. Three-Phase, 400 Hertz, 150 kilowatt, 2 generators

Answer: (D)

Patriot Prime Power is a two-unit, three-phase generator system designed to supply continuous, reliable power to the Patriot system. The setup typically uses two 75 kW generators operating in parallel, giving a total of 150 kW of prime power with the ability to share load and provide redundancy if one unit should fail. The 400 Hz frequency is chosen because military equipment and field power distribution prefer 400 Hz to keep components lighter and smaller, while three-phase power delivers smoother voltage and better efficiency for the system’s motors and electronics. Prime power means the generators are capable of running indefinitely under load (subject to fuel and maintenance), not just for short standby periods. So the description that matches Patriot Prime Power is three-phase, 400 Hz, 150 kW total, across two generators.