Reactor type OLTC

TA: OLTC Course – e-lesson #3 – Reactor type OLTC – open for registration!

This live e-lesson at the Transformers Academy will be held on 10 December at 2 PM CET, and same as with the first two lesson in this course, it will be presented by its author – Dr. Raka Levi.

This is the second e-lesson in the intermediate level, but you can choose the level of the OLTC course which suits your needs best.

If you wish to subscribe only to the intermediate level of the OLTC course and attend the upcoming lesson, please click here.

If you have missed the first two e-lessons, find them and attend on demand here.


In this e-lesson you will learn of reactor type tap changers, the difference between double and single contact designs, operation of a transfer switch and arcing tap switch. Dr. Levi as one of the world’s leading experts in diagnostics of OLTC in a  high voltage oil-filled power transformers, will explain principles of operation of reactor type tap changer applied to power transformers, as well as a brief preview of the future sessions.

Keywords: OLTC,  transformer, preventive autotransformer

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