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  1. K

    VSD as the final element instead of a Control Valve?

    Please consider minimum flow of Pump which is normally 20 % of flow Pump capacity. Operate Pump lower than minimum flow cause cavitation to Pump and be damaged soon. Then minimum speed from VSD shall greater then 20 Hz and > 20 % flow of Pump accordingly.
  2. K

    VSD for Centrifugal Pump/Fan

    Even VSD has been installed in Industrial for long time. Once Engineer like to equip VSD to centrifugal Fan/Pump then please check Fan/Pump 's Performance carefully prior to fit them. Operate VSD at various speeds mayn't reach your requirement. Please applogize and suggest to me if there are...
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