Repairing and Servicing of 11KV substation including HT Panel,2x500KVA 11/0.43 KV Transformer and Distribution panel at CLS Sri Vijaya Puram

Servicing of indoor type HT Panel( 1 I/C + 2 O/G) by authorised person by disconnecting HT supply and drawing out VCB trolley from panel, removing all dust particles from busber and cable termination chamber using air blower & Vacumm machine, cleaning of all male/ female bushing, busbars contacts point, terminals etc. Tightening of all contact terminals and joints of all busbars, CT and PT etc, applying petroleum jelly, complete as required.

Servicing of 630 Amp HT VCB by authorised person, removing all dust particles from busbar and termination using air blower, vacumm machine, cleaning of all male/ female bushing busbars contacts point, terminals etc. Tightening of all contact terminals and joints of all busbars, greasing of all moving parts etc. complete all as specified and as directed.

Testing of HT panel and HT VCBs ( following testing to be perform and submit a test report). a) Insulation resistance testing of HT busbars, CTs, PTs and VCBs b) Contact resistance measurement of VCB main contact c) Relay functional testing and setting of over current and earth fault relay d) Functional testing of VCB f) CT & PT testing.

Servicing of 500 KVA dry type step down indoor transformer 11/ 0.433 KV by disconnecting HT/ LT terminals, cleaning of HT and LT bushings to remove dust particles/ dirt etc., cleaning the core and winding with compressed air and suitable cleaning agents, tightening/ checking of all nut bolts in conducting and non conducting parts, checking of off load taps of HT coils etc, replcing of required spares, as required and directed by engineer in charge.

Testing of 500 KVA dry type step down indoor transformer 11/ 0.433 KV ( following testing to be perform and submit a test report). a) Insulation resistance testing of HT and LT coil. b) Winding resistance measurement. c) Transformer turns ratio test. d) Megnetic balance test. f) Functional testing of protections

Servicing of LT Panel by authorised person indoor type panel by disconnecting power supply, removing all dust particles from busber and cable termination chamber using air blower, cleaning of all male/ female bushing busbars contacts point, terminals etc. Tightening of all contact terminals and joints of all busbars, CTs etc, replacing the faulty spares. complete all as specified and as directed.

Servicing of 800 A ACB by authorised person indoor type panel by drawing out ACB from panel, removing all dust particles from busbar and termination using air blower, cleaning of all male/ female bushing busbars contacts point, terminals etc. Tightening of all contact terminals and joints of all busbars, greasing of all moving parts etc., complete all as specified and as directed by EIC.

Replacing the faulty mechanical interlock as per the original one ( for 5Nos 800A ACB- 4 Incomer and one Buscoupler), and as per the existing logic of operation, complete as reqd.

Replacing the faulty mechanical interlock as per the original one ( for 3Nos 400 MCCB- 2 Incomer and 01-Buscoupler), and as per the existing logic of operation, complete as reqd.

Replacing the faulty mechanical interlock as per the original one ( for 4Nos 320 MCCB- 3 Incomer and 01-Buscoupler), and as per the existing logic of operation, complete as reqd.