Capacitor banks are rated in which of the following units?

Capacitor banks are rated in kilovolt-amperes reactive (KVAR) because they are primarily used to provide reactive power to an electrical system. Reactive power is essential for maintaining voltage levels necessary for the efficient operation of electrical equipment.

KVAR is a unit that measures the reactive power in an alternating current (AC) circuit, and it is vital for understanding how capacitor banks affect the power factor of a system. As capacitor banks are connected to the system, they supply reactive power, which helps to offset the inductive loads in the circuit, improving overall efficiency.

In contrast, kilowatts (KW) measure active power, volt-amperes (VA) represent the apparent power in a circuit without distinguishing between active and reactive components, and amps measure current. None of these units accurately reflect the reactive power nature for which capacitor banks are specifically designed.