Motor Efficiency
Motor efficiency, abbreviated as \(\eta_m\) (Greek symbol eta), is the ratio of shaft power power out and electric power input of a motor.
Motor Efficiency formula
\(\large{ \eta_m = \frac{ 0.7457 \; HP \; Load }{ P_{in} } }\) |
Where:
\(\large{ \eta_m }\) (Greek symbol eta) = motor efficiency
\(\large{ P_{in} }\) = input power
\(\large{ HP }\) = horsepower
\(\large{ Load }\) = output power as a % of rated power