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Write a short note on : On Load Tap Changer (O.L.T.C.) or circuit tap changer of a Transformer.
written 9.5 years ago by gravatar for rohit rohit • 40 modified 3.8 years ago by gravatar for pedsangini276 pedsangini276 • 4.8k

WBUT University > Electrical Engineering > Sem 5

Marks: 5M

Year: May 2010
electrical machines
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written 9.5 years ago by gravatar for rohit rohit • 40 •   modified 9.5 years ago

On-load tap changers (or circuit tap changers), permit tap changing and hence voltage regulation with the transformer on-load. Tap changing is usually done on the HV(High voltage) winding for two reasons:

  1. Because the currents are lower, the tap changer contacts, leads, etc., can be smaller.
  2. As the HV winding is …

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