Maintenance Checklist of RTCC panel and MCC panel

                                                                         RTCC Panel
                      (Remote Tap Changing Control Panel)

The Maintenance of the RTCC panel is as Follows :-

1. Cleaning of the Panel With CRC-C22..
2. Checking for the Tap Position indicator display and counter checking for the same in the field.
3. Checking the Switch Position selector switch Whether in Auto/Manual ..
4. Ensure the Heater swirtch is in on/off condition according to the ambient temperatuure on the heater to remove the moisture content in the panel.
5. Check the Tightness of the Control wiring terminals suchas PT incoming terminals etcc...
6. Check the NO/NC operations of the  Timer Relays.
7. Check the Delay timers timing for the Opration .
8. Check the Diigital Automated Volatage Regulating Relay Functioning like..
Power on indicartion.
Both the Positive and Negative Bandwidth Settings .
PT volts Adjustinmets according to the system design.
PT volts dispaly (Seven Segment Display) working .
Check the Tap Delay for both the Lower and Rise  according to the time Delay setting on the AVR .
Check according tap postions till last from both Local and Manual Accordingly.
9.  Do the calibaration of the relay once in a year.
Note:-
           Ensure the Main Tap / Switch position whether in Indepedent / Master/Follower mode .
The switch postion must be fixed according to the Elec system ..



                       MCC Panel ( Motor Control Center)

The Following are Maintenance check list that we perform in our site:-

1. Cleaning the Panel internals iwith the CRC-C22.
2. Check for the Busbar Tightness.
3. Check the NO/NC operation .
4. Check the Neutral Floating Voltage (must be < 9 V ).
5. Check each individual both fixed contacts and moving contacts (Feeder's contactors ) functioning by stating the empty staters ..
6. Check the indication Lamps functioning .
7. Check the Earthing Resistance of the Connectecd MCC whther is in desirted values or not.
8. Check the fuses and its ratings .
9. Update  the Feeder rating and its Accesories (If any thing got relaced ) for maintenane record's.