Electrical Induction Motors - Slip

Calculate the slip of an AC induction motor based on the synchronous speed of the magnetic field and the shaft rotating speed. Slip is the difference between the synchronous speed and actual shaft speed, expressed as a percentage.

Calculator

Inputs

Synchronous Speed (ns) (rpm)

Shaft Rotating Speed (na) (rpm)

Results

Slip-- %

No. of Magnetic Poles	50 Hz (rpm)	60 Hz (rpm)
2	3000	3600
4	1500	1800
6	1000	1200
8	750	900
10	600	720
12	500	600
16	375	450
20	300	360