What is OLTC in a transformer, specify its fuction.

Answer Posted / lbbs

It seems most answers are ommiting the essential
function/characteristic(ON LOAD).I have a vague idea may be
someone will add.
It is my understating that with this tap changer you can
change winding tap position without breaking/swithing off
the load.This is achieved by the MAKE BEFORE BREAK
mechanism in the tap switch.
Hope someone will add.

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