Suppose you need to calculate the required kVA of the Generator – How would you find it?
This Volt Amps Calculator would help you out in calculating the kVA of any electrical device. You can find kVA of single-phase and three-phase equipment.
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Volt Amps Calculator
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 the kVA of an electrical device?
Single Phase formula to calculate kVA
For single-phase, kilo volt-ampere (kVA) is equal to the rated voltage (V) multiplied by current. Divide that result by a thousand to get the final result in kilo volt-ampere.
Example: Let us say you have 230 VAC equipment and the current is 100 amps. The calculated kilo volt-ampere is 23 kVA.
Three Phase formula to calculate kVA
For three-phase, kilo volt-ampere (kVA) is equal to the square root of three multiplied by rated voltage (V) by rated current (I) whole divided by thousand.
Example: Let us say you have a transformer having LV side voltage 415 VAC and rated current 2000 amps. For this transformer, the calculated kVA is 1435.9 kVA.
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