How to calculate the motor speed of a centrifugal pump, and how to determine the number of pole pairs in the motor’s rotating magnetic field
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I need the data sheet for a centrifugal pump, but I don’t know how to calculate the rotational speed. What I found online is that n=60f/p, but I’m not sure how to determine the number of pole pairs; I see that many people choose 2 for this value. Does anyone know how to do this?~
It depends on the power of your pump. Generally, low-power motors use 2-stage asynchronous motors with a speed of 2900 rpm, while high-power motors use 4-stage asynchronous motors with a speed of 1450 rpm. I’m not sure what purpose you need the centrifugal pump to operate at such a speed
2 poles: 2900 revolutions per minute; 4 poles: 1470 revolutions per minute; 6 poles: 960 revolutions per minute; 8 poles: 735 revolutions per minute; 10 poles: 560 revolutions per minute. The pump should have a rated speed, right?