No-load current of the centrifugal pump!
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Is it too high to purchase 3 centrifugal pumps with a power of 15KW and an no-load current of 12A? I’d like to ask an expert!
If you do the calculation yourself, it’s around 15*2/3~~10; that’s not too high. The actual no-load current needs to be calculated based on the actual specifications of the motor
It is normal for the power consumed by the motor at no load to reach 50% of its rated value.
It takes so much power to start; trying again will reduce it
This post was last edited by svenzheng on 2017-1-8 at 16:15. According to the calculations, your current share is 40%; for level 2 or level 4 motors, this figure increases by 10% and 5% respectively.
What is the relationship between the no-load current and the rated current of a motor? Is it also related to the second and fourth grade motors? Could someone expert please explain this? Thank you!
What is the IE rating of your motor? Then multiply the rated current by the no-load current of a typical 2-pole motor, which is 20–30% of the rated current. The no-load current of a 4-pole motor is 20–40% of the rated current. The no-load current of 6- and 8-pole motors is 30–50% of the rated current. I think 12A of single-phase current is no problem; the original calculation was 11.2A, but I’m not sure if that’s correct. It’s just my personal opinion