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  • Users: Isaacwjp
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  1. Isaacwjp

    Rpm vs Max safe speed

    Hi all, I'm in the cooling tower industries and deal with motors occasionally. Attached is the data from a permanent magnet motor. Could someone help to clarify the difference between 227 rpm and 3600 Maximum safe...
  2. Isaacwjp

    Help for ABB VFD (slightly urgent)

    Hi All, I am currently doing a project at a site that uses ABB ACS880 VFD. As you can see from the tracer below, the VFD Tripped at 43Hz due to the fault: Overspeed. I am unable to identify the root cause. -Shouldn't the fault only occur on 50Hz? -Does the trip margin change based on the...

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