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  1. pietr

    Does a VFD rise the power curve?

    Well, we also estimate the loss in the discharge valve and it's about 0.15 bar (nominal diammeter 200mm), and in my perception is insignifiant. Because we operate with the discharge valve at about 40% opened we obtain 9.3 bar in downstream which is more than we need. We have a well distributed...
  2. pietr

    Does a VFD rise the power curve?

    Maybe it seems bizzare for some of you. I have this situation: A three-phase squirrel-cage 4 poles motor drives a centrifugal pump. Motor has following parameters: 90kW nominal power, 160A nominal current, 0.86 power factor at nominal power and 0.95 efficiency at nominal power, class S1...

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