What unit measures Reactive power?

Reactive power is a component of electrical power that does not perform any work but is essential for maintaining the voltage levels necessary for active power to flow through the system. The correct unit that measures reactive power is Volt-Ampere Reactive (VAR).

This unit is distinct from real power, which is measured in watts, and represents the power component that oscillates between the source and the load in an AC system, typically associated with inductive and capacitive loads. It is important to understand this concept, especially in power factor correction and dealing with AC circuits where reactive components are prevalent.

Each of the other units mentioned corresponds to different aspects of electrical power. Watts measures real power, which is the power that actually does work in the system. Kilowatts, as a multiple of watts, also measures real power on a larger scale. Amperes measure the flow of electric current, not power itself. Thus, understanding reactive power's function in the overall power system is crucial for linemen to ensure efficient and reliable electrical operation.