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  1. systemsaver

    how to set PID control in VFD that operate a centrifuge pump transporting juice being concentrated

    Dear engineers I have a customer that is using a Siemens VFD manually to operate a centrifugal pump that transports juice with different Brix grade and the only reason he is using the VFD is for the start of the pump and is not getting a benefit of the affinity law to save energy running the...
  2. systemsaver

    VFD ON RECIPROCATING REFRIGERATION COMPRESSOR

    Can one save electrical energy using VFD on a reciprocating refrigeration compressor motor ?
  3. systemsaver

    motor operation voltage 440-480

    Dear engineers, If one reads in a 3 phase motor plate the voltage, 440-480 and 65.5 as amperes, does it mean that the motor should not work above or under that voltage range or one can assume that it still works 10% +- that range ? why is the same current for 440 or 480 when what happens is...

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