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Three-Phase Motor Power Calculator
P = √3 · V · I · cosφ · η. Use this to size cables, breakers and VSDs.
Inputs
Result
Apparent power
13.86 kVA
Active (shaft) power
10.84 kW
Shaft power
14.53 hp
Notes & assumptions
- For VSD-driven motors derate efficiency by 1–3% to account for inverter losses.
- Confirm cosφ at operating load — nameplate is typically the 4/4 full-load value.
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