804B fermont drops voltage under load

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    • #19338
      gary
      Participant

      Hello,
      My 804B drops voltage when a load is applied. No increase in RPM is audible.

      Notable:
      1. % current guage always reads 0
      2. % power guage always reads 0
      3. Am/vm guage only reads voltage in
      position L3. All other positions show 0
      even though voltage exists.
      4. when the hz are increased, the voltage
      and RPM increase.
      5. No low voltage fault lite appears.

      Questions:
      1. How do you know if the exciter is
      functioning?
      2. How do you determine if the voltage regulator is functioning?

      Thanks
      Gary

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