# Volt-ampere Calculator

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194 This calculator is useful to you to find out kilo volt-ampere of any equipment. You can find kVA of single phase and three phase equipments.

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### How to use the calculator?

• From the drop down, select the phase.
• For this calculator, note down the voltage, rated current. You can find details from the equipment’s nameplate.
• Enter the data collected in respective fields.
• The calculator would show automatically the calculated value.

### How to calculate kilo volts-ampere of equipments?

#### Single Phase

For single phase, kilo volt-ampere (kVA) is equal to rated voltage (V) multiply by current. Divide that result by thousand to get the final result in kilo volt-ampere. Example: Let us say you have 230 VAC equipment and current is 100 amps. The calculated kilo volt-ampere is 23 kVA.

#### Three Phase

For three phase, kilo volt-ampere (kVA) is equal to square-root of three multiply by rated voltage (V) multiply by rated current (I) whole divided by thousand. Example: Let us say you have transformer at LV side voltage is 415 VAC and rated current 2000. For this transformer, the calculated kVA is 1435.9 kVA.