Three-Phase Apparent Power Calculator
Three-Phase Apparent Power is intended for the specific electrical task described by its name. Enter line voltage v, line current a to calculate a result expressed in kVA. The formula works entirely in your browser and needs no account or external API. Balanced three-phase system assumed. This estimate is useful for comparing scenarios when the supplied measurements follow the stated assumptions.
How to use this calculator
- Measure line voltage v in the units indicated on the input label.
- Enter Line current A.
- Read the kVA result, then compare alternative inputs to evaluate your own situation.
Three-Phase Apparent Power formula
Math.sqrt(3)*voltage*current/1000 (kVA).
- The expression Math.sqrt(3)*voltage*current/1000 combines Line voltage V, Line current A. Follow the units on each input: the answer is expressed in kVA.
- Balanced three-phase system assumed.
Worked examples
Worked example: Three-Phase Apparent Power
Use these sample measurements: Line voltage V = 400, Line current A = 10.
Compute Math.sqrt(3)*voltage*current/1000.
Using the example inputs, the result is 6.928203 kVA. Use this value to verify the formula before changing the measurements.
Understanding the result
Interpret the output as kVA; it is not a measurement taken directly from a physical system.
Balanced three-phase system assumed.
Important notes
Balanced three-phase system assumed.
Review the input units, any required legal or engineering rules, and unusual edge cases before acting on this estimate.
Frequently asked questions
What does Three-Phase Apparent Power calculate?
It evaluates Math.sqrt(3)*voltage*current/1000 to produce kVA from the measurements you enter. For the example values shown, the result is 6.928203 kVA.
Which assumptions matter most?
Balanced three-phase system assumed.
Can I compare two scenarios?
Yes. Enter another set of measurements in the same units and compare the two outputs.
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This page provides a calculation tool plus explanatory information so you can understand what the result means and when the underlying method may not fit your situation.