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Recent content by mtsgeorge

  1. mtsgeorge

    Overvoltage conditions damaging VFD's

    I am not sure that the overvoltage is the cause, but the majority of the drives have faulted on overvoltage several times. No PF capacitors involved.
  2. mtsgeorge

    Overvoltage conditions damaging VFD's

    I would like to see some opinions on whether a line reactor will really help in this situation. 1 300hp VFD and aprrox. 30 5hp VFD's fed by a 1500kva transformer within 30 feet. All of these drives have a history of overvoltage faults and many have been repaired or replace more than once. The...
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