OHIO SEMITRONICS PC5 Series Operation & Calibration Manual page 16

speed. In other words, the
motor is not doing any work.
Power in watts is the measure
of the rate at which work is
being done.
Electric motors often have a
power factor rating. This
rating is for the fully loaded
motor only and will not apply
to an unloaded or partially
loaded motor.
PC5 SERIES WATT TRANSDUCER CALIBRATION MANUAL Page 13