On Load Tap Changer Design Incorporates a Series Transformer
On Load Tap Changer Design Incorporates a Series Transformer
(OP)
Could someone explain how does a on-load tap changer work with a build-in series transformer? Does the series transformer help to reduce the arcing during the tap changing or work as a polarity switch?
Thanks!
Thanks!






RE: On Load Tap Changer Design Incorporates a Series Transformer
RE: On Load Tap Changer Design Incorporates a Series Transformer
Check out some information from the masters of the OLTC.
The Standard Handbook for EE (Fink and Beatty) has a good overview as well.
"An 'expert' is someone who has made every possible mistake in a very narrow field of study." -- Edward Teller
RE: On Load Tap Changer Design Incorporates a Series Transformer
Thanks dpc!
NCTHAI - my guess the "series transformer" might be the reactance type LTC instead of a resistance type?!
RE: On Load Tap Changer Design Incorporates a Series Transformer
RE: On Load Tap Changer Design Incorporates a Series Transformer
Is there a typical connection diagram available that shows the principle?
RE: On Load Tap Changer Design Incorporates a Series Transformer
With the development of high voltage and current OLTC, this scheme is rarely used nowadays except in US where OLTC is provided on LV side in some industrial trfs(Rectifier /arc furnace)
RE: On Load Tap Changer Design Incorporates a Series Transformer
RE: On Load Tap Changer Design Incorporates a Series Transformer
Thank you for the nameplate diagram. I am kind of scratching my head and trying to figure out what is the secondary load current flow path...maybe I need take a closer look on IEEE C57.131.
bacon4life, prc and dpc, if you guys could give me some heads up that would be a great help!