Repair comprehensive maintenance to transformer and HT switch gear VCBs at Signal Enclave Sanjay Vihar APS Colony SFC CGDA USI AWWA 1 CBPO 5 Signal Gp Asmara Line Varuna Naval Mess in the area of AGE U Elect Supply No III under GE U Elect

Amount

On Line Filtration/dehydration of 11 KV Power / distrubution transformer oil 60 to 65 degree C through filtration plant to improve the dielectric strength/insulation valve of the transformer oil upto 60 KV at a gap of min 2.5 mm of electrodes. (a) The contractor will take shut down orders in working before commencement of the work from Engineer-in-charge. (b) The contractor shall ensure no wastage at transformer oil (c) The Contractor is solely responsible for any damage to the transformer during filtration operations. He is responsible for making good any damage to the transformer at his own cost without any extra cost to the department (d) The contractor shall ensure that the conservator tanks are full to its level before starting the dehydration. Note : Oil for Top up will be measure and paid seperatly under respective items. (e) the di-electric strenght of oil shall be tested before & after filtration. Test results shall be submitted to engineer-in-charge (f) Contractor shall solely responsible for safety of the Eqpt/Transformer during on line filtration

Material and labour for preparation of old painted surfaces of floor mounted indoor/outdoor type transformer from 100 KVA to 500 KVA capacity by cleaning/rubbing with course cloth wire brushes to remove dust deposits oil grease and repainting by applying one coat of spray paint with synthetic enamel paint of approved colour without disturbing/damaging the electrical net work system/equipment including making of capacity /rating /incoming outgoing details in capital english alphabet of size all as specified and directed.

All as per item No 2 above but from 630 KVA to 1000KVA

Supply and fix silica gel breather assembly complete with breather unit and silica gel including connecting with proper rubberised gasket and necessary fittings GI fittings for fixing/assembling upto 1000KVA transformer complete by removing the unserviceable silica gel breather assembly all as specified and directed. Make : Jaipuria/Patel Electrical Industries or equivalent recommende by OEM

Supply, filling and for topping up the transformer with new transformer oil duly filtered with filtration plant. Make : Power Oil Ltd Note : (a) The transformer oil shall be type EHV confirming to IS - 3351983 (b) Mineral oil grade shall be used. (c ) The transformer oil should have a high dielectric strength not less than 60 KV at a gap of min 2.5 mm of electrodes.

Taking down burnt defective drawnout/inlet Valve (Brass any size) and supply and fixing new drawn out/Inlet valve (brass as per existing size) suitable for any make of 100 to 500KVA Transformer all as specified and directed

All as per item No 6 above but from 630 KVA to 1000KVA

Taking down defective unserviceable LT bush porcelain insulator and supply and fix news LT bush porcelain insulator with oil seal for transformer outdoor/indoor up to 500KVA all as specified and directed

All as per item No 8 above but from 630 KVA to 1000KVA

Taking down defective unserviceable HT bush porcelain insulator and supply and fix news HT bush porcelain insulator for transformer outdoor/indoor up to 750 KVA all as specified and directed

All as per item No 10 above but from 630 KVA to 1000KVA

Isolating the HT supply of transformer, disconnecting HT and LT connections of transformer by opening clamps, bus bar extension and isolating the cables from transformer, outdoor/Indoor of 250 to 1000 KVA capacities, checking of transformer pressure release valve, oil condition and carrying out tests such as HV/LV megger test, ratio test, magnetic balance test, short circuit test including opening theinspection cover/top lid after drain out of oil as required to check the lead condition from winding to bus rods including necessary soldering/jointing etc, and charging of transformer and making all necessary connections / assembly & control circuits all as specified and directed. Note :- Test results shall be submitted through the Engineer-in-charge to Accepting Officer.

Taking down unserviceable sheet gasket (Cork sheet), Supply and fix synthetic rubberized cork sheet gasket 6mm 2' x 3' size sheet thick for top cover HT/LT bushes at places existing and tighting all the bushings and top cover to avoid any oil leakages of capacity 160 KVA to 500 KVA complete all as specified and directed

All as above item no.13 but capacity of 750 KVA to 1000KVA

Lifting of transformer core of capacity 160 to 750 KVA and keeping the core inside oven chamber to removing of moisure and increasing of the insulation value of core and drying the core assembly for minimum 3 days at a temp of 120 Degree C Note :- (a) Cost for lifting/lowering the core of transformer by crane is inclusive. (b) Labour for fixing the connection/removal of connection inside the heating chamber is inclusive. (c) Power consumption for heating core for improving insulation value is inclusive. (d) Temperature 80 to 90 Degree C to be maintained and inclusive in rate quoted.

Disconnecting defective out door/indoor transformers, 11KV/433 V of various capacities up to to 1000 KVA from HT/LT sides taking down transformer oil completely, storing oil in suitable container (to be provided by the contractor), lifting the top cover and core assembly carefully and checking the conditions, refilling the transformer oil completely after necessary repairs, re-taking core assembly and fixing the top cover and painting to transformer complete all as specified and directed. Note (a) Rewinding of transformer shall be measured and paid separately. (b) In case of major repairs/replacement in transformer, which can not be undertaken at site, the transformer shall be shifted to civil workshop and winding and connected accessories (complete transformer) (c) Dismantling of core and repairs shall be measured and paid separately. (d) Shifting of transformer shall be measured and paid separately. (e) Complete gaskets shall be replaced by the contractor rate deemed to be inclusive. Note: Pre commissioning test shall be carried at the factory/workshop as in prenence of the Accepting officer/Officer nominated by the GE

Taking down burnt defective high tension copper coil and supply and fix new HT copper coil made out of proper/ required as per the existing size copper wire enameled of high quality matching with the existing impedance and pre- insulation all as specified and directed. Note : (a) The cost of coil shall be inclusive of varnish sleeving of insulating material. (b) Cost of taking down the clamps, upper channels and core & HT links and re-clamp, positioning with separators, brazing etc completely , shall be deemed to be included in the quated rate.

All as per above item no.17 but of LT copper coil

Taking down and opening of HT copper wound loose overheated coil from the limbs of transfomer of various capacities upto 1000KVA, and rewinding the same by using the same copper wire after providing DPC and proper insulation etc into the coil of suitable turns etc all as specified and directed

All as per Item No19 above, but of LT copper wound

Taking down unserviceble tinned copper bus bar of various sizes from HT/LT side cable bushing rods from the transformer of capacities and supply and fix electrolyte tinned copper bus bar of suitable size and length including making holes as required at site to the transformer LT/HT side cable bushing rods all as specified and directed

Taking down the Defective tap changer assembly ,Supply and fix offload tap changer assembly suitable for any make upto 750KVA transformer with 7 tapping position including opening top cover, conservator etcs all as specified and directed.

Supply and making new LT 1100 V end termination with suitable size of aluminium lugs duly crimped for LT 3 ½ core armoured aluminium conductor cable after isolating supply to transformer/LT panel and disconnecting brunt/fault cable from the bunch of cables in trenches, galleries, removing cable loop, opening the cable blank and connecting back after end terminals, testing and commissioning for 3 ½ core 240 to 400sq.mm(XLPE)all as specified and directed.

All as per Item No23 above, but of Cable Size 185 Sqmm to 240 Sqmm

All as per Item No23 above, but of Cable Size 400 to 1000 Sqmm Single core.

Shifting of Transformer from substations to variours substation /transformers locations in the area of AGE(U) E/S No III by road using and removing the faulty transformer by fxing/errecting of the healthy tansformer with the hydra/crane support making the necessary HT/LT cable connections earth connections and restoration of power supply all as specified and directed.

M&L labour for alternative arrangement by hiring, transportation of transformer of capacity upto 500 KVA in place of unserviceable transformer on hire basis for 15 days including, installation, connecting and testing of transformer and return back after installation of repaired transformer complete all as specifed and directed. Note : (i) Repairing of transformer have to be completed within 15 days no extra cost will be paid toward hiring charges beyond 15 days . Moreover contractor shall not be allowed to shift the hired transformer until it is replaced by the repaired transformer . In case any fault /burning /peeling of painting and any other defects occured in hired transformer the contractor shall have to made good himself from his own expenses. (ii) Contractor should check the available infrasturcture and to be sure regarding safety of hired transformer before installation . The rete quoted is deemed to be include transportation cost, earthing lead etc. (iii) In case the defective transformer not repaired & installed on its site within the specified period of 15 days from the date of handing over to contractor a panelty recovery @ Rs 1000 /- per day will be charged from his dues. During this period contractor shall not be allowed to shift the hired transformer until it is replaced by the repaired transformer . No extra cost beyond 15 days will be paid to contractor on this account.

All as per item No 27 here-in -before but capacity of transformer 630 to 1000 KVA.

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 iron strip 32X4 mm by means of electric arc welding 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 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 any type of soil, common salt & charcoal dust in alternate layers, PCC 1:3:6 as in pit, precast RCC 1:2:4 type B-1 with necessary reinforcement as in cover & frame for pit, funnel, watering pipe 20 mm bore GI pipe light grade, protection pipe 40 mm bore GI pipe light grade etc. (b) The quoted rates shall also deemed to include the cost of earth test point and earth strip/GI earthing and protection pipe upto 7.5 meter beyond the earth plates electrode.

Opening of the VCB/OCB , 11 KV 400 to 800 Amps of any make by removing of the Breaker from the existing position after disconnecting all the connections from the system, servicing, Overhauling of the same, checking of the same for proper operation, spring charge, charged control cables are fastened tightly to the terminals, any abnormality, VCB, cleaning the surface of the insulators, fasten the bolts, checking and correcting interrupting units, mechanism, linkages etc, fasten the hardwares of control wiring, check that the split pins, Circlips, dowell pins etc. have not come out and are intact, lubricate the mechanism, moving parts by castrol, all purpose grease or equivalent, check that the vaccum pots/chambers is within limit including opening of the shutters properly, replacing of the trip catch, roller, holding catch, stopper, close push button, closing cum reassembling, controll limit switches reconnecting of the breaker for smooth functioning all as directed.

Decarbunizing/cleaning complete HT 11KV, 3 phase independent main bus bar, section bus bar chamber of HT panel electrification connection complete, consisting of set of 3 to 5 HT VCB switch gear arrangement incoming and outgoing installed in sub-stations after removing the complete bus bar spout, circuit spout from the bus bar chamber/cleaning with CTC and ensure proper decarburizing, re-fixing the same after applying backtol (Red) solution to the spout, checking all the connections, tightening the nuts, bolts thimbles for incoming and outgoing system complete, replacement of damaged space heater along with thermostats, as specified and directed, rate quoted is inclusive of bactol red, CTC & cotton waste provided by contractor.

All as per item No 31 here-in -before but set of 6 to 10 HT VCB switch Gear.

Decarbunizing/cleaning complete HT cable ougoing/Incoming circuit of CTs & PTs, 3 phase, cleaning with CTC and ensure proper decarburizing, re-fixing the same after applying backtol (Red) solution to the spout, checking all the connections, tightening the nuts, bolts thimbles for incoming and outgoing system complete, as specified and directed, rate quoted is inclusive of bactol red, CTC & cotton waste provided by contractor.

Supply only breaket Service/test position limit switch operatable for HWX/VMX type Breakers operatable at 110 Volts DC/AC with 2 NO/NC Make: ABB/Schnider/ Make approved by the Engineer in charge

Supply only closing coil assembly 110/24 V DC for VCB all as specified & directed. Make :- Alstom/schnider

Supply only fix tripping coil 110/24V DC for VCB all as specified & directed. Make :- Alstom / English Electric/Schnider

Supply only 11 Kv PT HV Back up fuse cat no 12Kv ABCNA 3.15A 38/10 as per OEM Recomendation / Make: Schnider/Bussmann

Supply only space heaters of 1 KW, 220Volts

Supply only thermostate adjustable type 30 to 120 degree C.

Supply only in replacement of motor & gear assembly 230V AC suitable for 400/630/800 amps, 11 KV HT VCB including testing & puting on load complete all as specified & directed.

Supply only in replacement (at site on OCBs as per existing size), male contact (Copper) suitable for HT 11 KV power supply .

Supply only in replacement (at site on OCBs as per existing size), Female contact (Copper) suitable for HT 11 KV power supply.

Supply only Current Transformers draw type 11kV, 300/150/1-1, Core1: Class 5P10, 10VA, Core2: Class 0.5, 10 VA .

Supplying and fixing Current Transformers draw type 11kV, 200/100/1-1, Core1: Class 5P10, 10VA, Core2: Class 0.5, 10 VA .

Supplying and fixing Current Transformers draw type 11kV, 100/50/1-1, Core1: Class 5P10, 10VA, Core2: Class 0.5, 10 VA .

Taking down the old/unserviceable potential transformer supply & fix new 11KV/110V/100VA with drawable type and epoxy incl PT grid with risers complete suitable for HT 11KV panel complete incl testing & commissioning all as specified and directed. Make : Alstom / Kappa/Jyothi

Material and labour for painting of LT/HT pannels by duly cleaning the surface from dust and grease and applying one coat of synthetic enamel paint by using spray gun colour as directed by the Eng - in - Charge

M&L for preparation of old painted surface, cleaning of oils, lubricants, grease etc complete of PCC 4 pole structure as per IS above PCC coping with applying two coats of alluminium paint over one coat of red oxide, incl brackets clamps, channels and cross arms and writing MES no of poles (Number size shall be 25 mm and lettering shall be 40 mm) complete all as directed by Engineer - In - Charge (Note: The quoted rate inclusive of two coats of white wash on exposed concrete surfaces) (Make of Paint: Berger/ Jenson & Nicholson/ Shalimar/ Asian paint)

M&L for cement painting of with prepared white ( snow sem ) for transformer plitnth area of any size all as specified for the following :- ( including scrapping & cleaning with wire brush )

Material and labour for painting to the both sides of fencing of the transformer/RMU by scraping the existing surface and applying a coat of synthetic enamel paint of the existing colour and complete all as specifed and directed.

Material and labour for complete bush cutting /trimming of trees around the substations/ transformers and under over head lines complete all as specified and directed.

M&L in replacement for 25x4mm 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.

M&L Cable jointing kit for 11 KV (Earthed) grade cable for indoor termination heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of 120 sqmm to 185 sqmm.

M&L Cable end jointing kit for 11 KV (Earthed) grade indoor type heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 240 Sqmm to 300 Sqmm.

Supply, installation & commissioning and testing in replacement of SHF/VRLA Battery, Battery charge panel comprising 12 Nos. 2 Volts 100 AH tubular cell, self contained floor mounted sheet steel cabinet with two tiers for housing the batteries. The charging equipment will be operated from 240Volt +/- 10%, 50 c/s supply. The cabinet should be complete and internally wired auto/mannual switch. The charger unit should house, resstance control DC ammeter , Voltmeter and fuses, AC supply failure alarm. Complete accessories required for commissioning is included in the scope of work. DC distribution board comprising of 63 Amps DPMCB as incomer and 2 nos of 15 A DP MCB as O/G Battery Charger with batteries Automatic Float cum Bboost charger of 16 A to give 24 V DC output at 60 Ah capacity

M&L in replacement mild steel chequered plate 10 mm thick incliding cutting of suitable size for duct cover at site complete all as specified and directed by Engr-in-Charge.

M & L for PCC 1:3:6 type C-2 (using 40 mm gradded aggregate) for foundation, filling and mass concrete etc complete all as specified and directed .

M & L for cement concrete 1:2:4, type B-2 (using 20 mm gradded aggregate) for floors and paving etc complete all as specified and directed.

Calibration of all the electromagneitic/ thermal/ microprocessor relays of 11 KVand setting the relay tripping timings in advance to the feeding sub station to ensure pock wise re-installation of various relays in position with complete testing and commissioning. Ensure proper functioning. Note :- (a). Primary & secondary injection kit shall be arranged by the contractor (b) DC Supply for relay testing shall arranged by the contractor (c) The contractor shall prepare the relay adjustment and tripping timing chart in the follow up fashion and submit to Engineer-in-Charge

Material and Labour for complete removal of Stone aggragerate and removing of sand mud. Debris/ weeds and plants from the agraggate and relaying at the removed place complete all as specified and directed

Supply and lay graded stone aggregate of 63mm size underneath of 4 pole/2 pole/transformer yard all as specified and directed by taking down the damaged / powdered stone aggregate.

Dismantling taking down 11 KV load break switch outdoor type and supply, installation , testing and commissioning of 11 KV, 400 Amps, 21 KA/3 sec outdoor type Ring main unit IP 54 protection plug in type extensible on one side SF 6 gas insulated one incoming and 0ne outgoing (2 way ) with metering plate form mounted compact switch gear consisting of 01 Nos load break switch as incommer and 01 Nos outgoing VCBs , all live parts, bus bars VCB will be enclosed in robotically/manual welded minimum 2 mm thick stainless steel tank filled with SF 6 gas IP 67 Degree of protection and tested for internal arc 20 KA/1 sec as per latest IEC 62271-200 complete installed at basement of building, including the cost of PCC foundation for placing of RMU on plinth complete all as specified and directed. The unit shall include the following with all necessary standard fitting required at site: - (Make : ABB / SIEMENS / SCHNEIDER C&S).

(A) Incoming Load Break Module - 01 Nos each switching unit shall be designed as a three position switch. This three function switch combines the functions of switch disconnector and earthing switch cables switch 12 KV, 400 Amp, 21 KA - 01 Set. Snap action mechanism for motorised and manual(Both) operation with integrated earthing switch - 01 Nos. Cable bushing 400 Amp standard C bushing - 01. Fault passage indicator, On(N-1) load break switch where n= no of load break switch >>s/c & E/F FPI with digital display to be added for detection of cable fault. ON, OFF, EARTH mechanical indication on the front mimic of the panel - 01. Capacitive voltage indication fixed type LED display - 01. ON, OFF, TRIP mechanical indication on the front mimic of the panel - 01. Cable box for termination of cable up to 1 No. x 185 sq.mm - 01. Cable cover standard - 01. Set of 12kV Cable Termination Boots - 01. Cable entry bottom, front - 01

(B) (i) Out going VCBs - 01 No consisting of following - function unit consist of vaccum circuit breaker in combination with a three position switch. The three position switch fulfills the operation of the disconnector function and earthing function circuits breaker unit is equipped with an over current transformer for the protection of distribution Transformer/circuit vaccum circuit breaker 12 KV, not less than 400 A, 21 KA - 01. Spring assisted closing with stored Energy triping mechanism for motorised operation with integrated earthing switch - 01. live cable LED indicators thru capacitor voltage dividers mounted on the bushings push button for breaker trip - 01 sec O/C + E/F self powered numerical protection relay with low and High set for Over current and earth fault Relay should have facility to display the maximum loaded phase current also relay shall record minimum 5 fault records with time stamping - 01 Alaram trip indication 6 window anuciator for transformer faults Mechanical ON/OFF/EARTH indication -01. Auxliary contacts on load switch are 1 No+2NC & Auxiliary conract on earth switch is 1 No+ 1NC-01. Self powered electronic numerical protection relay providing 3 over-currents & 1 E/F protection - 01, shunt trip coil 24 V DC-01 capactive voltage indication fixed type LED display -01 ON/OFF/Trip mechanical indication on the front mimic of panel-01 cable box for termination boots-01. Metering Equipment incl. 01 x Digital Voltmeter (Acc.Cl.0.5), 01 x Digital Ammeter (Acc.Cl.0.5), 01 x Tri-VectorMeter (Acc.Cl.0.5) Auxliary relay for transformer protection -06 Nos.

(B) (ii) Out going VCBs - 01 No, each consisting of CT 100/1 -5p10.2.5VA- 03 Nos. (C ) Additional equipment deliverd separately or mounted seperatly, Bus connected with battery charger and battries for motor power supply-01 (i) PT ratio 11KV/3/110/v3, 100 va, 0.5 class for measurement with volts meter(ii) Auxliary transformer of 11KV/230V, 1 KVA for powering the motors and battery charger (iii ) 24 V DC battery charger and battries for motor power supply. Standard mano meter -01, Operating handle - 02 , cable clamping provision(standard)-01 Operation and maintance manual - o1, installation and commissioning manual - 01, cost of PCC works for placing RMU on plinth is deemed to be included in the cost, Height of plinth shouldnot be less than 0.45 mtrs from ground level. NOTE :- (a)The above module consisting of one Load break Switch and 01 VCBs shall be alligned appropriately and must have electrical and mechanical interlocking as per latest electrical safety norms including foundation complete.

M&L for danger notice board of 1.6 mm thick mild steel,vitreous enamelled white with letters,figures and conventional skull and bones in signal red colour and fixed with MS clamps,bolts and nuts of approved size for HT 25 x 20 CM size complete.

Material and labour for providing galvanised chian link fencing of height 2 meters from GL right arround the 11 KV 4 pole structure/RMU/ transformers structures with ms angular of size 60 x 60 x 6mm thick duly painted with a coat of red oxide and two coats of synthetic enamel paint grouted with post holes and PCC at span of every meter distance around along with 1 mtr width hinged gate and providing of slag brick work of 2 feet height from Ground level with proper basement and plastering the surface with 1:6 ratio right arround the fencing complete as specified by the engineer in charge.

Note : contractor should procure and provide 50 % of the material as listed above within 15 days of the placing of work order and shall be verified by the Eng-in-charge

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