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File:Tap changer.svg

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The tap changer is currently set to tap position 2, with load supplied directly via the right hand connection. Diverter resistor A is short-circuited, diverter B is unused.

If the tap changer is moved to tap 3, the following sequence occurs:

  1. Switch 3 closes, an off-load operation.
  2. Rotary switch turns, breaking one connection and passing load current through diverter resistor A.
  3. Rotary switch continues to turn, connecting between contacts A and B. Load now supplied via diverter resistors A and B, winding turns bridged via A and B.
  4. Rotary switch continues to turn, breaking contact with diverter A. Load now supplied via diverter B alone, winding turns no longer bridged.
  5. Rotary switch continues to turn, shorting diverter B. Load now supplied directly via left hand connection. Diverter A is unused.
  6. Switch 2 opens, an off-load operation.

References

[edit]

Central Electricity Generating Board (1982). Modern Power Station Practice. Pergamon. ISBN 0-08-016436-6.

File history

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Date/TimeThumbnailDimensionsUserComment
current02:24, 20 October 2024Thumbnail for version as of 02:24, 20 October 2024267 × 533 (27 KB)Minorax (talk | contribs)fix // Editing SVG source code using c:User:Rillke/SVGedit.js
15:10, 22 January 2006Thumbnail for version as of 15:10, 22 January 2006250 × 500 (35 KB)BillC (talk | contribs)On-load transformer tap change mechanism.
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