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Recent content by VinceS

  1. VinceS

    Calculating Motor Torque on VFD

    Do you have the specs on the drive? I have had trouble calls on large motor sized drives using small motors. The rectifier section utilized phases A and C largely with about half the proportional amp load draw on phase B. As to the 20 volt delta on phase C, the local POCO specs may provide a...
  2. VinceS

    NFPA79 E-STOP RESET AND RESTART

    It is clear that the guidelines for restarting equipment after a type 0 or 1 stop event should not restart previously running equipment. In the case of 2 wire controlled motor starter. The control power was removed during a commanded E-Stop event via the MCR. When the E-Stop is reset and the...

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