ClueLuma

Motor input from horsepower calculator

The filter and dust-control examples divide shaft power by motor efficiency.

Units
P=hp×LF×0.746ηmP = \frac{\text{hp} \times \mathrm{LF} \times 0.746}{\eta_{m}}

Calculator

Enter the values you know and leave one box empty. Calculate finds the empty one, the result or any input.

hp
fraction
fraction
kW

Worked example

Given

  • hp\text{hp} = 80 hp
  • LF\mathrm{LF} = 0.72 fraction
  • ηm\eta_{m} = 0.91 fraction
P=80×0.72×0.7460.91≈47.219P = \frac{80 \times 0.72 \times 0.746}{0.91} \approx 47.219

Symbols and units

SymbolMeaningUnit
PPelectric inputkW
hp\text{hp}rated shaft horsepowerhp
LF\mathrm{LF}shaft load fractionfraction
ηm\eta_{m}motor efficiencyfraction

Related calculators

Results are estimates for study and screening. Check the inputs, units and assumptions before you use them for design, billing or contract decisions.