Answer Posted / praveen

RTCC is Remote tap changer circuit, normaly RTCC panel will
be installed in Main panel room and will be connected to
OLTC ( On line tap changer) of the transformer through
control cable.There will be AVR in RTCC Panel to control
the secondary voltage of the transformer and AVR output
will control OLTC motor in Clock wise or Anty clock wise.
and also there will be selection in RTCC panel for Auto and
manual operation.

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