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Answer Posted / venkatesh
RTCC is Remote Tap Change Circuit is connected to OLTC of
Transformer through control cables. It raise & lower the
voltage as accordingly specified by controlling the motor
drive in OLTC electrically (and manually through Push
Buttons)
In RTCC an AVR (Automatic Voltage Regulator)is fixed to
maintain the output voltage level(raise & lower) by
controlling the motor.
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