Synchronous speed
Synchronous speed is rotating-magnetic-field speed, calculated as 120 × f ÷ p for frequency f and pole count p.
Other learning contexts (2)
In context
Its unit is r/min. It generally differs from an induction motor's shaft speed during motoring operation.
Example
Under hypothetical 50 Hz, 4-pole conditions, synchronous speed is 1,500 r/min. Slip explains why nameplate speed may be slightly lower.
Key distinction
Synchronous speed is magnetic-field speed.
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