CCVT Tutorial Preliminary Agenda

  1. Design Basics: Capacitor Element Construction
  2. Applications
  3. Factory vs. Field Tests
      1. Include troubleshooting procedures
      2. Discuss the 10kV results verses Line Voltage Results
      3. Are 10kV test results performed?
      4. Should the CAR lead be detached from its terminal for field testing?
      5. Is the position of the CAR grounding switch then irrelevant?
      6. Discussion of % Power Factor and capacitance limits
      7. Temperature sensitivity: How does temperature variation affect CCVT power factor readings?
  4. The Garton Effect
  5. Nameplate Nomenclature
      1. Discuss meaning of nameplate information
      2. Why are 10 kV Power Factors not included on the nameplate
      3. The C1-1 capacitance is generally not found on the nameplate as a separate capacitance, but only combined with other capacitances. Is there a reason why C1-1 is not included on the nameplate?
  6. Accuracy
      1. Tuning/ Recalibration (manufacturing recommendations as far as metering and voltage input)
  7. Newer vs. Older CCVT Designs
      1. Enhancements ( Example: resonant rejection capability)
      2. Advantages of newer designs
      3. Modifications to older designs that should be implicated
      4. Changes in Power factors due to new designs
  8. Open Discussion/Questions 

Note: Agenda is preliminary and subject to change. Any questions for discussion that you would like to have as part of the CCVT Tutorial can be sent to mfoster@doble.com Your input would be useful to the entire Client Group.

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