kVA to Amps Calculator

KVA, or kilovolt-ampere, is a unit of apparent power in an electrical system, representing the combination of both real power (kW) and reactive power (kVAR).

It's a crucial measure for assessing the total power demand in a system, considering both real and reactive components. Power factor, the ratio of real power to apparent power, is vital for evaluating system efficiency.

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kVA to Amps Conversion Formula

The formula to convert kVA to amps involves the power factor (PF) and voltage (V). For both single-phase and three-phase systems, the formula can be expressed as:

$I\left(Amps\right)=\frac{S\left(kVA\right) }{V\left(Volts\right)\times PF}$

Voltage Difference - Line to Line and Line to Neutral

In three-phase systems, it's important to consider both line-to-line (LL) and line-to-neutral (L-N) voltage differences. The voltage across a phase and the neutral is different from the voltage between two phases.

For line-to-line (LL) voltage

$V_{LL}=V_{Phase}\times \sqrt{3}$

For line-to-neutral (L-N) voltage

$V_{L-N}=V_{Phase}$

Single-Phase kVA to Amps Formula

For a single-phase system, the formula simplifies to

$I\left(Amps\right)=\frac{S\left(kVA\right)}{V\left(Volts\right)\times PF}$

Three-Phase kVA to Amps Formula

For a three-phase system, considering line-to-line voltage

$I_{LL}\left(Amps\right)=\frac{S\left(kVA\right)\times 1000}{\sqrt{3}\times V_{LL}\left(Volts\right)\times PF}$

 

And for line-to-neutral voltage

$I_{L-N}\left(Amps\right)=\frac{S\left(kVA\right)\times 1000}{\sqrt{3}\times V_{L-N}\left(Volts\right)\times PF}$

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Frequently Asked Questions