REPAIR REPLACEMENT AND MAINTENANCE OF DISTRIBUTION TRANSFORMER AND HT SWITCH GEARS WITH CONNECTED WORKS AT KARAM VIHAR MAP, 285 FD WKSP, 261 AB TIGRIS ROAD MAP, SUMRAN LINE, NPG LINE, MAUDE LINE, SANYAT LINE, PANCHWATI DAD, NSB III, 20 PUNJAB, 147

Amount

Disconnecting and taking down faulty and defective copper wound transformers of any capacity upto 315 kVA , 11000/433 Volts from two pole or 4 pole structure or substations and transporting to MES store yard for minor/major repair works complete all as specified and directed by Engineer - in- charge .

Disconnecting and taking down faulty and defective copper wound transformers of any capacity upto315 to 630 kVA , 11000/433 Volts from two pole or 4 pole structure or substations and transporting to MES store yard complete all as specified.

Material and Labour in repairs for draining out complete transformer oil from transformer oil reserver tank up to 630 KVA capacity at MES store yard for major repair works and storing the transformer oil in suitable container (container to be provided by the contractor to keep aside the oil for re-use (after repair of transformer) and lifting of core assembly by opening of top cover and other items for inspection/examination by Board of Officers and lowering/fixing of core assembly in its original position after inspection to make it ready for transportation to contractor workshop/factory for repair works. (Note :- transportation charges will be paid separately against item No. 4&5)

Transporting of defective/faulty copper wounds transformer of capacity up to 315 kVA , ratio 11000/433 Volts from MES store yard to contractor's workshop/factory for repair works and return back to MES store yard after repair works completed complete all as specified.

Transporting of defective/faulty copper wounds transformer of capacity 315 to 630 kVA , ratio 11000/433 Volts from MES store yard to contractor's workshop/factory for repair works and return back to MES store yard after repair works completed complete all as specified.

M&L in repairs for shifting of serviceable transformer of capacity up to 630 KVA from MES store Yard/Sub Stn (indoor/outdoor) or from any location at Delhi cantt for installation in place of unserviceable transformer and return back to MES store yard after replacing with repaired transformer complete all as specified and directed by Engineer - in- charge .

M&L in repairs for factory opening of faulty / defective transformer of ratio 11000/433 volts opening the top cover of transformer , carrying out the repairs /works listed at serial No. (i) to (xi) below for the transformers of capacity up to 315 KVA . (i) Taking out the core/coil of transformer from tank by disconnecting star delta connection of transformer , After dismantling of Transformer and physical joint inspection of core coil assembly (removing all 3 limbs HV &LV winding from Core Assembly) washing of core assembly by hot oil for removing brunt carbon and copper particles and cleaning of complete top yoke by oil (ii) Painting inside of the transformer with yellow paint and outside body with synthetic enamel paint of existing tint/color Cleaning inside of the transformer by using transformer oil. (iii) Refixing/ reassemble of complete core assembly and core coil assembly providing new coils and new tap leads of tap changer including requisite insulation material including heating up the transformer core assembly to remove moisture after carrying out the repairs works . (iv) Renewal of rubberized gasket set for top cover, Brass spindles, LT and HT bushings ,tap changer connection WTI &OTI connection and CT connection etc. (v) Refilling of the decanted transformer oil after centrifuging and testing for required di-electric strength. (vi) Refixing the transformer top cover with nuts, bolts and washers and conservator tank ready for final testing all as directed in presence of rep of MES. (vii) Preparing Inspection report for renewal of parts etc in presence of Engineer - in- charge and Contractor. (viii) The contractor shall arrange factory visit for the Engineer - in- charge or his representative as and when required, testing of transformer to be done on full load at factory. (ix) Soldering/ brazing or connecting LV bus bars with suitable size nuts, bolts and washers (x) Providing necessary insulation papers, sleeves, PVC pipes insulation sheet etc. (xi) Renewal of worn out nuts, bolts and washers Note : Coil and insulation shall be measured and paid separately

All as per item N0.7 here in before but up to capacity above 315 KVA to 630 KVA

Material and Labour in repairs for rewinding of HT coils with copper wire DPC/super enameled high quality matching with existing gauge and impedance including requisite insulating paper/material in each layer of winding after taking down old existing winding of HT coils of 11 KV transformer complete. Note : (i) The rate quoted against these items is inclusive necessary provision of all types of insulating materials , heating and varnishing etc.

All as per item No 09 here-in-before but LT coils with copper strips.

Material and Labour for drying/ovening of complete Core coil assembly(CCA) in vacuum chamber and continuous monitoring to improve of IR Values after varnishing the coil to eliminate moisture content from Transformer up to 630 KVA capacity complete .

Material and Labour after drying and ovening and Re-assembling of up to 630 KVA Transformer core, testing of magnetic circuit for IR values, assembly and connection of OLTC of all phases, testing of transformer at low voltage, checking of ratio and polarity test. all as specified and directed. Note: For Item no 07 to 12 The following routine test as per IS 2026 (Part I) -2011 shall be carried out at repairing workshop /manufacturer having NABL calibration of test equipments (i) Measurement of winding resistance. (ii) Measurement of voltage ratio and check of voltage vector relationship. (iii) Measurement of impedance voltage/short circuit impedance (principal tapping) and load loss . (iv) Measurement of no load loss and current. (v) Measurement of insulation resistance. (vi) Dielectric tests (c) The contractor shall give written warranty of one year for the repaired transformer. Note :-HT/LT leg coils and transformer oil required for top up shall be measured and paid separately under relevant items of this Schedule here-in-after as supply only.

M&L for hiring, transportation , Installation and testing of serviceable transformer of same capacity or higher in place of unserviceable transformer which is under repair and shifting back to workshop , on hire basis for 15 days when ordered complete all as specified and directed.

Note :-1. Repairing of transformer have to be completed within 15 days duration, 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/breakage/burning/ peeling of painting and any other defects occurred in hired transformer the contractor shall have to make good himself from his own expenses. Contractor should check the available infrastructure and to be sure regarding safety of hired transformer before installation. The rate quoted is deemed to be included all as transportation cost, , earthing leads lifting/lowering arrangement etc for transformer of capacity upto 630 KVA.

Note-2. In case the defective/ unserviceable transformer not repaired & installed on its site within the specified period of 15 days from the date of handing over to contractor ; a penalty 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.

Supply and fixing in renewal of transformer bushing on LT 433 volt side including brass stems /rods conical bush and gasket suitable for indoor/outdoor transformer capacity up to 630 KVA complete all as specified and directed .

63 KVA to 315 KVA.

315 KVA to 630 KVA.

Supply and fixing in renewal of porcelain transformer bushing HT 11 KV including brass set stems conical bush and gasket for indoor/outdoor transformer of following capacities complete all as directed by Engineer-in-Charge.

63 KVA to 315 KVA.

315 KVA to 630 KVA.

S&F in renewal of silica gel of breather assembly with vent pipe and new silica gel for indoor/outdoor transformer of the capacity up to 315 KVA complete all as specified and directed.

All as per item No 16 here in before but of capacity 315 KVA to 630 KVA

Material and labour for centrifuging and dehydration including filtration and cleaning of transformer oil by using automatic centrifuging/dehydration machine electric operated without any shutdown of transformer including testing oil sample before and after dehydration and filtration oil to achieve min 35 to 40 KV breaking capacity at 4 mm gap by absorbing and abolishing all sludge particles for use as per BS-B-66-1983 complete all as specified and directed by Engineer - in- charge Note:- (i).Standby supply will be arranged by the contractor) (ii). Transformer oil required for top up shall be measured and paid for separate (iii) Contractor have to arrange the dehydration machine and testing kit from his own resources without any extra cost

Supplying and topping up transformer oil low viscosity, dielectric strength 35 to 40 kV breaking voltage for topping up transformers duly centrifuging including filter action by using automatic centrifuging machine to achieve min 35 to 40 KV breaking capacity at 4 mm gap by absorbing and abolishing all sludge particles for use as per BS-B-66-1983 complete all as specified and directed by EIC.

Supply and fill in replacement silica gel in transformer complete all as directed.

M&L for Painting of transformer after preparation of old painted surfaces of steel, by brushing/cleaning stain, greasy spots with thinner, applying two coats of spray painting with PU paint with spraying machine to transformer indoor/outdoor, fixed on poles or in Sub Station at different location after disconnecting of HT supply from incoming and LT supply from outgoing capacity 63 KVA to 315 KVA complete all as specified and directed .

All as per Serial item No 21 here-in-before but 315 KVA to 630 KVA capacity

Disconnecting electric outdoor transformer 11 KV capacity up to 630 KVA on existing 2/4 pole structure from HT/LT terminals and lifting by hydra for installation on newly constructed plinth complete all as specified and directed .

Platform :- M&L for Brick Masonry ( Using sub class 'B' Brick) platform of size 3m x 3m x 1 m height , built in CM 1:4 complete with excavation & earth work , PCC 1:4:8 type D-2 in foundation , 15 mm thick rendering in CM 1:6 on sides and top of the brick work , up to 150 mm below ground level , supply and fixing of 02 Nos MS Channels of size ISMC-100 for balancing of Transformer embedded in PCC 1:2:4 type B-1 up to 100 mm Thick RCC 1:2:4 with 10 mm steel bar @ 150mmc/c including 20 mm graded aggregate , including provn of steps on one side complete all as specified and directed .

Fencing :- M&L for perimeter fencing of size 04m x 04m x 2m (as per site condition) having MS work of angle iron for post and struts of fencing around the transformer plinth/substation/LT panels etc drilling holes flat iron fillet for securing wire mesh by welding to angle iron frame and framed work as in door/gate of angle iron and wiremesh.Door to be fixed by 03 nos 100mm long hinges and one sliding door bolt of 300mm long for locking arrangement. Details are as follows:- (a)Angle iron post to post distance maintained not more than 02mtr ,size of angle shall be 40x40x5mm.Angle Iron shall be embedded in natural ground not less than 0.90 m deep. (b)MS wire 75x75mm mesh 3.15 mm dia ,2mtr height and shall be fixed to post with flat iron 32 x 6 mm fillet with two coats of synthetic enemel paint over a coat of red oxide primer. (c)Cement concrete type D-2 ,1:4:8 using grade crushed stone aggreagte for mass concrete/ foundation. (d)Brickwork with subclass 'B ' bricks ,straights or curved on plane exc 6m mean radius ,built in cement mortar 1:6 complete for toe wall along the perimetre fencing.The toe wall shall be one brick thick,30cm high (15cm above GL and 15cm below GL) on 75mm thick PCC lean concrete. (e) The exposed surfaces of brickwork shall be rendered 15mm thick in CM (1:4) finished fair and even without using extra cement. (f) The steel gate shall be of size 1.00m x2.00 m fabricated from angle iron 40x40x5 mm frame and 12x12 mm square guard bars. (g) All the exposed surfaces of steel shall be painted with two coats of Synthetic enamel paint over one coat of Red Oxide Primer. (h) Dry stone aggregate of size 40mm spreaded ,levelled & compacted upto 100mm thick. (h) Necessary excavation and eathwork shall be included in the quoted rate.

Earthing complete in replacement with galvanized steel earth plate electrode 60 cm x60 cm x 6 mm thick buried directly in ground ,(Earth pit not less than 2.25 meter deep below ground level) with top edge of plate not less than 1.5 meter below normal ground level ,connected to and including galvanized iron earth wire 32 X 6 mm by means of nut, bolts, check nuts and washers of galvanized iron or steel and provision of charcoal dust and common salt packed all around the earth plate including necessary excavation and earth work in soft/loose soil and testing complete all as specified and directed and shown in electrical plate number 3 of MES SSR part-I(2009) (a) Excavation and earth work for drilling hole for electrode in soft/loose Soil. (b) PCC pit in cement concrete 1:2:4 type B-1, Pre cast RCC cover with suitable handle 40 mm thick in PCC 1:2:4 type B-1, reinforced with welded steel wire fabric weighing not less than1.87 Kg/ Sq meter. (c) Funnel with watering pipe of GI 20 mm nominal bore light grade and lugs etc complete all as specified and directed (d) 40 mm nominal bore medium grade GI protection pipe for protection of earthing lead complete all as specified and directed. (e) Requisite quantity of common salt and charcoal. (f) Testing of earthing.

Supply and fixing in replacement of galvanized iron strip 32 X 6 mm for additional earthing lead beyond 7.5 meter complete all as specified and directed.

S&F Thermometer of transformer capacity up to 630 KVA complete all as specified and directed

Material and labour for cleaning of 2/4/6 pole structure for loose filling under 2/4/6 pole structure / along the transformer plinth in side the fencing area after cleaning/surface excavation including taking out grass/herbs and filling of aggregate. Note: Aggregate will be paid separately at item No 30 here in after

Material and labour for crushed stone aggregate of size 20mm, for loose filling under 2/4/6 pole structure / along the transformer plinth in side the fencing area after cleaning/ surface excavation and, complete all as specified.

Cutting/trimming of tree branches around transformer,2/4/6 pole structure up to 5 mtr distance at all sides and disposal complete all as specified and directed.

Supply in replacement four wheeled trolley all as specified and directed for load up to 25 ton with the following specification & details:- Trailer 4 Wheeler size 3500mm x 2500mm (a) Main Chassis shall be made of MS channel 125x65mm. (b) Axle size 62x62 MM MS square with steel forged hubs and new tapper roller bearing. (c) Leaf springs-04 Nos spring for suspension system size 70 x 10 x 900. (d) Draw-Bar:- Triangular draw bar on front made with male Feale angle and pipe bushes with Eye hook towing arrangement. (e) Towing arrangement:- Spring loaded towing hook for universal attachment with any vehicle size 36mm round. (f) Floor sheet:- Floor fully covered witm 2mm thick MS sheet. (g) Tyre assembly:- 04 Nos new tyers assembly size 7.50x16 (Nylon) and standard Make as CEAT, JK, & MRF. (h) Finishing & painting:- Finishing with grinding and one coats of zinc-chromate (primer) and two coats of super synthetic enamel paint of any shade as approved. (j) Fittings:- All necessary fittings like 02 Nos reflectors on rear.

M&L in replacement of aluminum/MS Jumper upto 630 kVA capacity HT pole structure including busbar with using minc conductor sleeves(RYB) PG clamps nut bolts and washer etc complete as directed by Engineer -in- charge

M&L mild steel Bends, straps, supports or stays for rainwater, fan clamps ventilating pipes incld bolts if reqd hooks (stay) heavy for large gates, hook and pinton hanges large hasps and staples : chains hand made sliding bolts clamps hold fasts, wall ties hooks for hanging fans, plain angle cleats for securing purlins to wood trusses rafters: knee piece inserts, two way and three ways straps, plate washers and similar small articles conforming to Fe-290 Gde-E-165 complete all as specified.

S&F first aid box with complete medicines as directed by Engr In Charge

M&L for replacement of complete control wiring (AC/DC) in existing HT 11 KV VCB Panel of capacity 630 Amps installed at substation using 2.5 Sqmm FRLS copper wire and associated accessories necessary for wiring and integration of control panel with breaker, relays, meters, power pack, T&C switch, annunciator etc and including the following:- (i) AC/DC copeer wiring, lugs, terminals, TB's, TB markers, strips, etc which are necessary for integration of new items with existing panel. The contractor shall ensure integrity of critical protection scheme off the panel and shall be demonstrated via functional tests at site including tacking out control wiring complete all as specified and directed.

Supplying, installation, commissioning and testing in replacement of 11 KV Current Transformer (CT`s), indoor type, resin cast epoxy type, of 25.0 KA/Sec having ratio 300/150/5-5 Amps having Core1: Class 5P10, 10VA for protection , Core2: Class 0.5, 10VA for metering including associated wiring complete all as specified and directed

All as per item No 37 here-in-before but having ratio 200/100/5-5

All as per item No 37 here-in-before but having ratio 150/75/5-5

All as per item No 37 here-in-before but having ratio 100/50/5-5

All as per item No 37 here-in-before but having ratio 50/25/5-5

Supplying and fixing in replacement 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

Material and labor for servicing /testing of breaker/control panel including CT, PT and relays in control panel of VCB of capacity 1250/630/400 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 (xvii) Flash cleaning of complete bus bar with CRC

(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 following Aux relay (i) DC Supply supervision relay. (ii) Master trip relay

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 initially charging, commissioning and testing complete.

S&F MCB single pole of capacity 06 Amps, 10 KA, C curve with provision of suitable channels in replacement of existing fuses.

Supplying, installation, commissioning and testing in replacement of PT unit three phase, three limbs, up to 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 complete all as specified and directed .

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

Supply and installation in replacement Anti-condensation space-heater with Thermostatic control in cable and circuit breaker compartments of HT switchgears complete all as specified and directed.

S&F in replacement of vacuum interrupter suitable for 400/630 amps, 11 KV HT VCB complete all as specified and directed

S&F in replacement of isolating contact assembly suitable for 400/630 amps, 11 KV HT VCB complete all as specified and directed

S&F in replacement of fixed contact block complete suitable for 400/630 amps, 11 KV HT VCB complete all as specified and directed

S&F in replacement of moving contact block complete suitable for 400/630 amps, 11 KV HT VCB complete all as specified and directed

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

S&F in replacement of spring bearing gear suitable for 400/630/800 amps, 11 KV HT VCB complete all as specified and directed

S&F in replacement of closing coil assembly 24 volts DC suitable for 400/630amps, 11 KV HT VCB complete all as specified and directed

S&F in replacement of tripping coil assembly 24 volts DC suitable for 400/630 amps, 11 KV HT VCB complete all as specified and directed

Supply and fix in replacement close/trip coil 24V DC for 11 KV HT VCB of capacity 400/630 Amps capacity all as specified and directed.

S&F in replacement of panel door lock suitable for 400/630amps, 11 KV HT VCB complete all as specified and directed

Supplying & Fixing in replacement auxiliary switch (7 No + 7NC) suitable for 400/630 amps, 11 KV HT VCB complete all as specified and directed

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

Supplying & Fixing in replacement support rod with screws suitable for 400/630 amps, 11 KV HT VCB complete all as specified and directed

Supplying & Fixing in replacement support insulator suitable for 400/630 amps, 11 KV HT VCB complete all as specified and directed

Supplying & Fixing in replacement upper connector suitable for 400/630 amps, 11 KV HT VCB complete all as specified and directed

Supplying & Fixing in replacement lower connector suitable for 400/630 amps, 11 KV HT VCB complete all as specified and directed

Supply & fix in replacement only set of 6 Nos fixed arcing contacts suitable for 400/630 amps, 11 KV HT VCB complete all as specified and directed

S&F in replacement Caution plate “CAUTION MEN AT WORK of size 40cmx15cm made out of white acrylic sheet with Red colored glow tape and size of writing letter is not less than 5 cm each.

S&F in replacement of HRC fuse of capacity 20 Amps for VCB complete all as specified and directed

S&F in replacement MCB 20 to 32 Amps DP

S&F in replacement of Digital Volt meter Secondary voltage 110 V for 11 KV VCB Control Panel.

Material and labor in replacement Retro Reflective installation sign boards of size 5 feet x 4 feet fabricated out of 16 gauge MS sheet frame duly welded/riveted with MS square pipe of size 25mm x25 mm , 3mm thick at height 2.00 meter above ground level on stainless steel heavy duty pipe of size 50mm bore embedded 60 CM in PCC 1:2:4 type B 1 block of size 45cmx45cmx60cm including necessary excavation and earth work .The MS portion of the board shall be painted with 2 coat of stove enameled paint and the front & back of the frame shall be overall sheathed with blue color base painter adhesive tape. The writing matter will be in English alphabets on both sides with reflective adhesive painter tapes of letter size not less than50mm as directed by Engineer -in-charge.

NOTE :-(i)contractor should 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.

ALLIED CONSTRUCTION

Vijay Electricals

DS CONSTRUCTION

MV Engineers And Contractors

SB ENTERPRISES

Ridhi engineers and builders