AC motor synchronous & slip speed
Relate supply frequency, pole count and slip for an AC induction motor.
Inputs
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Results
- Synchronous speed
- 1,800 RPM
- Actual speed at slip
- 1,746 RPM
- Slip speed
- 54 RPM
Ideal relationship only. Actual shaft speed depends on load, motor design and drive control; always confirm against the motor nameplate and drive parameters.
Formula & guidance
synchronous RPM = 120 × frequency ÷ poles; actual RPM = synchronous × (1 − slip ÷ 100)
Ideal relationship only. Actual shaft speed depends on load, motor design and drive control; always confirm against the motor nameplate and drive parameters.
Change the example inputs and check each field’s units. Use equipment datasheets and applicable project standards for final decisions. Results do not establish Canadian electrical-code compliance or certify a design.