Electrical Motors - Speed at Operating vs. Synchronous Load
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Synchronous and approximate speed (rpm) at rated load for small and medium motors operating at 60 hz and 50 hz:
No. Poles | Approximate Electrical Motor Speed (rpm) | |||
|---|---|---|---|---|
| Speed with Rated Load | Synchronous Speed (no Load) | |||
| 60 hz | 50 hz | 60 hz | 50 hz | |
| 2 | 3450 | 2850 | 3600 | 3000 |
| 4 | 1725 | 1425 | 1800 | 1500 |
| 6 | 1140 | 950 | 1200 | 1000 |
| 8 | 850 | 700 | 900 | 750 |
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