REPAIR/ REPLACEMENT OF HT UG CABLES, GOD, 11 KV HT OH LINE, 4 POLE STRUCTURE AND MAINT OF DISTRIBUTION TRANSFORMER, HT SWITCHGEARS AND OTHER CONNECTED WORKS AT MIL YOL STN UNDER GE(KH) YOL.

Material and labour for servicing ,testing and calibration of breaker/control panel including CT, PT and relays in control panel of VCB of capacity 630/800 Amps and rating 11 KV complete and including any spare parts as required on site as details mentioned as under:- (a) Details of servicing of breaker :- (i) Adjustment of mechanism if required. (ii) Clean the circuit breaker to remove dust and dirt. The envelope of the vacuum interrupter and insulating materials shall be wiped with a clean cloth. (iii) Apply a small amount of oil to rotary sections, sliding surfaces, pins, coupling section, etc.use grease for the operating shaft and bearings and machine oil for other parts. (iv) Check for rust and wear. (v) Check Spring Tension and pitting of the Cluster Contacts. (vi) Visual check for rust and deformation. (vii) Check for loosened bolts and nuts, broken spring washers and snap pins etc. (viii) Check for loosened connections, rust, damaged lead wires. (ix) Check whether the contacts are damaged by arcing. (x) Checking and rectification of control circuit (i.e trip circuit , close circuit etc & tighten the connections if any.

(xi) Check close & trip coil. (xii) Checking of Jaw Contacts Conditions and repair/adjust. (xiii) Replace the jaw contacts,If required. (xiv) Improvement of resistance of epoxy insulator and epoxy body by applying post heated varnish. (xv) Replacement of Dashpot/shock absorbers . (xvi) Replacement of carbon brush of spring charging motor (b) The following test shall be carried out:- (i) Primary Injection Test of CT / PT(ii) Closing & Opening Timing Test for all three poles. (iii) IR Test with megger in open and closed condition. (iv) Contact resistance test for all three poles

(v) Closing coil resistance (vi) Tripping coil resistance. (c) Testing of following relays of control panel with Secondary Injection Kit ,checking and programming of relay :- (i) Over current and earth fault relay i.e. Electromechanical Relay , Electronumeric Relay of any make/model etc and as required on site. Spairs Parts :Vaccum bottle for 11kv vcb panel as required make and model on site,spring charging motor ,Rack in Mechanism/cradle ,panel shroud ,Master trip relay and all other spare parts as required on site .All costs are included ,No extra payment will be done for Spare Parts. Note:Job should be carried out by Specialised OEM.

Supply, installation, testing, and commissioning of numerical protection relay of below mentioned make, complete with all required accessories, mounting hardware, wiring, and software configuration for proper operation in the substation.The scope includes supply of relay, fixing in panel, termination of control and CT/PT wiring, configuration of relay settings as per approved protection scheme, and integration with existing control and protection circuits. The relay shall be programmed, tested through secondary injection, and verified for correct operation including trip, alarm, and indication functions.All materials, tools, tackles, skilled manpower, and consumables required for complete installation shall be in the contractor’s scope. The work shall be carried out as per relevant IS/IEC standards, OEM guidelines, and instructions of Engineer-in-Charge.Complete in all respects including submission of test reports and setting records. Make : Micom P-111 /ABB REJ 601

Supply, installation, testing, and commissioning of numerical protection relay of below mentioned make, complete with all required accessories, mounting hardware, wiring, and software configuration for proper operation in the substation.The scope includes supply of relay, fixing in panel, termination of control and CT/PT wiring, configuration of relay settings as per approved protection scheme, and integration with existing control and protection circuits. The relay shall be programmed, tested through secondary injection, and verified for correct operation including trip, alarm, and indication functions.All materials, tools, tackles, skilled manpower, and consumables required for complete installation shall be in the contractor’s scope. The work shall be carried out as per relevant IS/IEC standards, OEM guidelines, and instructions of Engineer-in-Charge.Complete in all respects including submission of test reports and setting records. Make : CGI 14 N /ASHIDA ADR 141C

S &F HRC fuse of rating 2 to 6 Amp any type to suit existing system complete all as specified and directed.

Supply and fix including Taking down Epoxy/ resin cast CT of dual core dual ratio 100-50/5+5A with 5 P 10 for protection and class-I accuracy having 15 VA burden complete all as specified and directed.

Supply and fix including Taking down Epoxy/ resin cast CT of dual core dual ratio 200-100/5+5A with 5 P 10 for protection and class-I accuracy having 15 VA burden complete all as specified and directed.

Supply and fixing in replacement of Trip coil with plunger with working voltage 24 volts DC suitable for existing panel complete all as specified and directed.

Supply and fixing in replacement of Closing coil with working voltage 24 volts DC suitable for existing panel complete all as specified and directed.