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Recent content by davidqyuan

  1. davidqyuan

    VFD for the motor

    I have some questions about the VFD, does anyone here could help? thanks. 1. Is power factor (input side of VFD) in VFD's name plate? if it is, I just wonder if the motor's PF is different with VFD's PF, which one should be used to calculate P and Q in the VFD's input side? 2. does VFD...
  2. davidqyuan

    VFD issue

    I have some questions about the VFD, does anyone here could help? thanks. 1. Is power factor (input side of VFD) in VFD's name plate? if it is, I just want if the motor's PF is different with VFD's PF, which one should be used to calculate P and Q in the VFD's input side? 2. does VFD...
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