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  1. MOENGINEERING

    Could Negative Sequence be causing my over amping motor problems?

    Unfortunately I do not have a meter that measures power factor. What is your thought on this? I agree the soft-start is not the problem. The motor runs at 3553 RPM's. I don't think the number of poles was labeled incorrectly. As you pointed out that is directly related to the speed. What I...
  2. MOENGINEERING

    Could Negative Sequence be causing my over amping motor problems?

    When I first looked at this, I thought for sure they had just forgot to trim the impeller in the pump. I had a mechanical engineer evaluate the pump flow but according to the pump curves this is the correct pump and impeller. When the motor is off the pump can freely be spun by hand such that it...
  3. MOENGINEERING

    Could Negative Sequence be causing my over amping motor problems?

    Could Negative Sequence be causing my motor problems? I have a project I am working on in Missouri with a city water utility. The water utility just finished replacing an old 150 HP motor and pump with a new 150 HP motor and pump. The new pump on this motor is configured to be nonoverloading...

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