RTCC means remote tap changer control panel which is a programmable device to control the output of the transformer through OLTC unit fitted in the transformer through control cables. It is a panel consisting of the AVR (automatic voltage regulator), display for tap position, voltage, LED’s for raise and lower of taps relays, selector switches for auto manual selection, etc. ln Auto mode the voltage is controlled by the AVR. In manual mode, the operator can increase/decrease the voltage by changing the taps manually through the push button in the RTCC. MPL is manufacturing up to 33 kV RTCC panels for up to 50 MVA transformers extensively and supplying a great number of panels in the local utility companies like REB, PGCB, BPDB as well as PWD and various local clients.