Amps to kVA at 400V Three-Phase Calculator
Convert amps to kVA for a balanced three-phase supply at 400 volts line to line. The calculation uses the square root of three, and it applies to…
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Convert amps to kVA for a balanced three-phase supply at 400 volts line to line. The calculation uses the square root of three, and it applies to balanced loads only.
Worked example
Example calculated from the starting values. Enter your own values and press Calculate to get your result.
With the default inputs (line current = 75 A), the results are: apparent power at 400 V 51.96 kVA.
Quick reference: line current vs result
Reference table based on the example values; it is not your calculation result.
| Line current (A) | Apparent power at 400 V |
|---|---|
| 37.5 | 25.98 kVA |
| 75 | 51.96 kVA |
| 150 | 103.92 kVA |
| 375 | 259.81 kVA |
| 750 | 519.62 kVA |
| 1,500 | 1,039.23 kVA |
Frequently asked questions
What formula does this calculator use?
Apparent power at 400 V = x × sqrt(3) × volts ÷ 1000. Variables: x = line current in A. Fixed values: volts = 400.
What do I need to enter?
You need line current (A). Results update as you type.
What is an example result?
With the default inputs (line current = 75 A), the results are: apparent power at 400 V 51.96 kVA.
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