Repair and maintenance to switch gear at Engr Mess Sub Stn Parade Camp Sub Stn Cassel Road Sub Stn Church Road Sub Stn Tigris Road Sub Stn 19 HAA Sub Stn DGNCC Sub Stn Manekshaw Centre Sub Stn Link Sub Stn and adjoining area of the area of AGE U Elec

Amount

Material and labour for servicing /testing of breaker/control panel including CT, PT and relays in control panel of VCB of capacity 1250 /800/630 Amps and rating 11 KV complete 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 of control circuit & 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 (d) Testing of followig Aux relay (i) DC Supply supervision relay. (ii) Master trip relay

Supplying, installation, commissioning and testing of 11 KV Current Transformer (CT`s), indoor type, resin cast epoxy type, of 13.1 KA/Sec having ratio 400/200/5-5 Amps having Core1: Class 5P10, 10VA for protection , Core2: Class 0.5, 10VA for metering and associated wiring including taking down old UNSV CTs complete all as specified and directed

All as per item No 2 here-in-before but having ratio 200/100/5-5

All as per item No 2 here-in-before but having ratio 150/75/5-5

All as per item No 2 here-in-before but having ratio 100/50/5-5

All as per item No 2 here-in-before but having ratio 60/30/5-5

All as per item No 2 here-in-before but having ratio 50/25/5-5

Supplying and fixing Potential Transformers, Draw-out type in existing HV panel for easy maintenance, 11kV/rt3:110V/rt3, 50VA, Cl.0.5 with associated gun-type HRC fuses and MCBs for HT/LT isolation including taking down old UNSV PTs complete all as specified and directed

Supplying, installation, commissioning and testing of PT unit three phase, three limbs, upto 11 KV draw-out type, resin cast dry type, single ratio having primary voltage 11 KV & secondary voltage 110 volts, 50 VA class-1 including necessary bus bar connections & wiring for metering including taking down old UNSV PTs complete all as specified and directed

S&F LED indication lamp for breaker ON/OFF/TRIP/Breaker Spring Charged/R-Y-B etc for 11 KV control panel and associated wiring, if reqd, including taking down old UNSV LED indication complete all as specified and directed

Supply and installation Anti-condensation space-heater withThermostatic control in cable and circuit breaker compartments of HT switchgears including taking down old UNSV heater complete all as specified and directed

S&F of vacuum interrupter suitable for 400/630/800 amps, 11 KV HT VCB including taking down old UNSV vacuum interrupter complete all as specified and directed

S&F of isolating contact assembly suitable for 400/630/800 amps, 11 KV HT VCB including taking down old UNSV contact assembly complete all as specified and directed

S&F of fixed contact block complete suitable for 400/630/800 amps, 11 KV HT VCB including taking down old UNSV contact block complete all as specified and directed

S&F of moving contact block complete suitable for 400/630/800 amps, 11 KV HT VCB including taking down old UNSV moving contact block complete all as specified and directed

S&F of motor & gear assembly 230V AC suitable for 400/630/800 amps, 11 KV HT VCB, testing & puting on load including taking down old UNSV motoer gear assembly complete all as specified and directed

S&F of spring bearing gear suitable for 400/630/800 amps, 11 KV HT VCB including taking down old UNSV spring bearing gear complete all as specified and directed

S&F of closing coil assembly 24 volts DC suitable for 400/630/800 amps, 11 KV HT VCB including taking down old UNSV closing coil complete all as specified and directed

S&F of tripping coil assembly 24 volts DC suitable for 400/630/800 amps, 11 KV HT VCB including taking down old UNSV tripping coil complete all as specified and directed

Supply and fix close/trip coil 24V DC for 11 KV HT VCB of capacity 400/630/800 Amps capacity including taking down old UNSV close/trip coil complete all as specified and directed

S&F of panel door lock suitable for 400/630/800 amps, 11 KV HT VCB including taking down old UNSV panel ddor lock complete all as specified and directed

Supplying & Fixing auxillary switch (7 No + 7NC) suitable for 400/630/800 amps, 11 KV HT VCB including taking down old UNSV auxillary contact complete all as specified and directed

Supply and fix T&C Switch for Breaker ON/OFF purpose in HT 11 KV VCB panel including associated wiring, if reqd, for proper functioning of switch including taking down old UNSV T& C switch complete all as specified and directed

Supplying & Fixing support road with screws suitable for 400/630/800 amps, 11 KV HT VCB including taking down old UNSV support road with screw complete all as specified and directed

Supplying & Fixing support insulator suitable for 400/630/800 amps, 11 KV HT VCB including taking down old UNSV support insulator complete all as specified and directed

Supplying & Fixing upper connector suitable for 400/630/800 amps, 11 KV HT VCB including taking down old UNSV upper connector complete all as specified and directed

Supplying & Fixing lower connector suitable for 400/630/800 amps, 11 KV HT VCB including taking down old UNSV lower connector complete all as specified and directed

Supply & fix of set of 6 Nos fixed arcing contacts suitable for 400/630/800 amps, 11 KV HT VCB including taking down old UNSV fixed arching contact complete all as specified and directed

S&F Caution plate “CAUTION MEN AT WORK of size 40cmx15cm made out of white acrylic sheet with Red coloured glow tape including taking down old UNSV caution plate complete all as specified and directed

S&F of HRC fuse of capacity 20 Amps for VCB including taking down old UNSV PTs including taking down old UNSV HRC fuse complete all as specified and directed

S&F o MCB 20 to 32 Amps DP including taking down old UNSV MCBs complete all as specified and directed

S&F of Digital Volt meter Secondary voltage 110 V for 11 KV VCB Control Panel including taking down old UNSV meter complete all as specified and directed

M&L in replacement Earthing complete with galvanized steel earth plate electrode of size 60cmx60cmx6 mm thick, buried directly in ground (earth pit not less than 3.5 m below normal ground level) with top edge of earth plate not less than 2.5m below normal ground level, connected to galvanized strip 32mm by means of bolts, nuts, check nuts and washers of galvanised iron or steel as shown in electrical plate No 3 of SSR Part I, connected to earth test point and the equipment on the other nuts and washers of galvanised iron side complete all as specified, including testing and commissioning complete all as directed. Note : (a) The unit rates quoted against this item shall be deemed to include the cost of excavation and earth work in soft/loose soil, common salt & charcoal dust in alternate layers, PCC 1:3:6 type C2 as in pit, precast RCC 1:2:4 type B-1 with necessary reinforcement 6mm dia both ways as in cover & frame for pit, funnel, watering pipe 20 mm bore GI pipe light grade, protection pipe 40 mm bore GI pipe medium grade etc. (b) The quoted rates shall also deemed to include the cost of earth test point and earth strip/GI lead wire and protection pipe upto 7.5 meter beyond the earth plates electrode.

M&L in replacement 32x6mm galvanised iron strip for earth continuity conductor or main earthing lead fixed to wall on batten or recess or chases or buried in ground or drawn in pipe or any other indicated situation for loop earthing etc complete all as specified and directed.

S&F and installation battery 12 volts,100 AH, dry type in replacement of old unserviceable battery in battery charger with suitable size of new copper battery terminal and lugs and initialy charging, commissioning and testing complete including taking down old UNSV PTs complete all as specified and directed

Maintanance services to be provided for Main Yard 11 KV Sub station as per details as under- (a) The installation is main receiving station and complaint centre minimume 02 electrician shall be provided per shift (Total Three Shifts per day) round the clock (24x7) .The electrician shall have adequate knowledge of above maintioned job and GE/Engr-in-charge can reject the proposed electrician giving reasoned rejection.No claim shall be admissible on account of rejection of person. (b) Details of equipment :- Transformer step down 11KV /0.433 KV capacity 500 KVA-01 Nos , 11 KV 4 pole structure -01 Nos , 11 KV VCB-11 Nos, Battery bank -01 Nos, LT Panel -01 Nos, & Capacitor panael -01 No (c) The following checking,testing , supervision shall be carried out by electrician in respect of equpments mentioned at at para (b) above:- (i) Recording of all parameters of system as per indication of all equipments installed in the log sheet as directed by Engr-in-charge round the clock on daily basis. (ii) Maintainance of fault register (iii) Maintainance of shutdown register (iv) Proper operatiion of 11 KV Breaker (v) Giving of Shutdown by draw out of trolley of breaker . (vi) Proper operation of 11 KV GO DO. (vii) Fixing of burnt out fuse on GO of 11 KV 4 pole structure. (viii) Checking of LED indication for breaker on , off , trip , spring charge , trip circuit healthy on daily basis. (ix) Checking of annunciator, hooter , indicators , meters, TNC switch , emergency trip push button , MCB for AC DC isolation, heater , thermostate on daily basis.

(x) Checking of status of Main protection numerical relay Auxillary protection relays such as trip circuit supervision relay, master trip relay , PT fuse failure relay DC supervision relay and keeping all the relays in reset condition on daily basis. (xi) Checking of oil level of transformer on as directed by Engr-in Charge. (xii) Checking the batteries in serviceable and charged condition by checking battery, leads, battery lugs on daily basis. (xiii) Attending of all complaint of the sub stn . (xiv) Cleaning of dust & foreign particles on and around the panel, loose connection earthing connection in the sub station. (xv) Checking of condition of leakage of oil from transformer tank, bushing, radiators and other parts on weekly basis. (xvi) Checking condition of silica gel on weekly basis (xvii) Testing of earth resistance of all earthing as directed by Engr-in-charge. (xviii) Checking of DC voltage of system as directed by Engr-in charge.

Maintanance services to be provided for Manekshaw Centre 11 KV Sub station as per details as under- (a) The installation is main receiving station and complaint centre minimum 01 electrician shall be provided per shift (Total Three Shifts per day) round the clock (24x7) .The electrician shall have adequate knowledge of above maintioned job and GE/Engr-in-charge can reject the proposed electrician giving reasoned rejection.No claim shall be admissible on account of rejection of person. (b) Details of equipment :- Transformer step down 11KV /0.433 KV dry type capacity 1600 KVA-02 Nos , 11 KV VCB-05 Nos, Battery bank -01 Nos, LT Panel -06 Nos, & Capacitor panael -01 No (c) The following checking,testing , supervision shall be carried out by electrician in respect of equpments mentioned at at para (b) above:- (i) Recording of all parameters of system as per indication of all equipments installed in the log sheet as directed by Engr-in-charge round the clock on daily basis. (ii) Maintainance of fault register (iii) Maintainance of shutdown register (iv) Proper operatiion of 11 KV Breaker (v) Giving of Shutdown by draw out of trolley of breaker . (vi) Proper operation of 11 KV GO DO. (vii) Checking of LED indication for breaker on , off , trip , spring charge , trip circuit healthy on daily basis. (viii) Checking of annunciator, hooter , indicators , meters, TNC switch , emergency trip push button , MCB for AC DC isolation, heater , thermostate on daily basis.

(ix) Checking of status of Main protection numerical relay Auxillary protection relays such as trip circuit supervision relay, master trip relay , PT fuse failure relay DC supervision relay and keeping all the relays in reset condition on daily basis. (x) Checking the batteries in serviceable and charged condition by checking battery, leads, battery lugs on daily basis. (xi) Attending of all complaint of the sub stn . (xii) Cleaning of dust & foreign particles on and around the panel, loose connection earthing connection in the sub station. (xiii) Testing of earth resistance of all earthing as directed by Engr-in-charge. (xiv) Checking of DC voltage of system as directed by Engr-in charge.

M/s Adhikari construction co.

Buddham Builders

Rajindera Enterprises

Vijay Electricals

MV Engineers And Contractors

mayur enterprises

Pran and Bros

Ridhi engineers and builders

M/s Birja Nand