INDUCTION MOTOR I012
The most common type of electric motor used in industry.
Induction motors have a slippage of 2 to 5 percent compared to synchronous motors. This means that a 1800 rpm motor is really running somewhere between 1710 and 1764 rpm. (2% to 5%).
Pump prints usually show 1750 rpm.
This difference in speed affects both the head and capacity of the centrifugal pump.
See the “affinity laws” to learn how the head, capacity and horsepower required are affected by this reduction in speed.