Reactive Power Converter

Convert reactive power between volt-ampere reactive (VAR), kilovolt-ampere reactive (kVAR), megavolt-ampere reactive (MVAR), and gigavolt-ampere reactive (GVAR). Reactive power is critical for power factor correction and capacitor bank sizing in AC electrical systems.

Understanding Reactive Power

Reactive power represents energy that oscillates between the source and reactive loads like inductors and capacitors. Unlike real power measured in watts, reactive power is measured in VAR and does not perform net useful work, but it still affects system capacity and utility billing.

Frequently Asked Questions

What is the difference between VAR and kVAR?

One kilovolt-ampere reactive (kVAR) equals 1000 volt-amperes reactive (VAR). kVAR is commonly used for capacitor bank ratings and power factor correction equipment.

Why does reactive power matter?

High reactive power reduces power factor, increases current draw, and can trigger utility penalties. Power factor correction using capacitors reduces reactive power demand.

How is reactive power related to apparent power?

Apparent power (VA) is the vector sum of real power (watts) and reactive power (VAR). In a right triangle, $S^2 = P^2 + Q^2$ where $Q$ is reactive power.

What is MVAR used for?

Megavolt-ampere reactive (MVAR) is used for large industrial facilities and grid-level reactive power compensation systems.

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Reactive Power Converter