REPAIR/MAINTENANCE OF POWER TRANSFORMER, TRANSFORMER, VOLTAGE STABILISER ALONGWITH OTHER CONNECTED SERVICES AT NAGROTA UNDER GE NAGROTA

Amount

Inspection of defective step down 11 KV / 0.433 upto 500 KVA transformer of any make, installed on plinth/floor/pole mounted, indoor/outdoor type, step opening, removing the top cover of transformer, detecting the fault, rectfying the defect at site (Nagrota, Katra & Sanjhi Chatt) except major fault of burnt winding or other. The following tasks if required will be performed :- (a) Step opening of the transformer and removing the transformer's top cover for checking/rectified the faults of the transformer. (b) Replacement of defective HT/LT bushes, spindles etc. (c) Refixing the transformer top cover with nuts, bolts and washers. (d) Testing of transformer complete. Note : (i) In case of replacement of LV / HV bushing / spindles / tap changer etc, will be measured and paid for separately under relevant items. (ii) Transformer oil (if required) for topping will be measured and paid for separately under relevant item

M&L for taking down transformers mounted on two/four pole structure or on platform / indoor floor mounted carefully from their position after removing electrical connection, earthing leads etc, for executing necessary comprehensive preventive maintenance as well repairs necessiated, including to and fro transporting to MES store yard/contactor workshop, and refixing after execution of maint/repair to their original position or to other location as directed of capacity as under: -

Step down transformer 11 KV/0.433 KV of any make of capacity 40 KVA to 160 KVA.

All as per srl item no 2.01 but capacity exceeding 160 KVA but n.exc 500 KVA

M&L for dismantling core, taking out damaged coils (HV Coils) from its position for replacement, including supplying and fixing new winded coils with super enamelled copper winding wires of required gauge, number of turnings & weight to suit with the existing coils with allied insulation materials, packing with spacers etc, complete all as specified and directed by the Engr-in-charge.

M&L for reconditioning of LT side coils from its position for replacement including supplying and fixing new winded coils with cotton braided copper wire or strip of approprite size (thickness & breadth) number of turnings & weight to suit with the existing coils with allied insulation materials, packing with spacers etc, complete all as specified and directed.

Taking out HV porcelain bushes from transformers for replacement being damaged, including supply and fixing new HV porcelain, vitreous white, brown or green of voltage grade 11000 V bushes to suit the size of transformers of different makes for transformer of capacity 40 KVA upto 500 KVA indoor complete all as specified and directed.

Taking out LV porcelain bushes from transformers for replacement being damagd, including supply and fixing new LV porcelain, vitereous white, brown or green of voltage grade 1100 V bushes to suit the size of transformers of different makes for transformer of capacity 40 KVA upto 500 KVA indoor/out door complete all as specified and as directed.

Taking out worn out HV metallic alloy(brass/gun metal) bush rods, including supply and fixing new HV metallic alloy (gun metal/brass) bus rods of suitable length and dia with necessary nuts, washers and bushing packing to prevent oil leaking from the bushes including making necessary connections for transformer of capacity 40 KVA to 160 KVA complete all as specified and directed.

All as per srl item No 7 here-in-above but for transformer of capacity exceeding 160 KVA but not exc 500 KVA.

Taking out worn out LV metallic alloy (brass/gun metal) bush rods, including supply & fixing new LV metallic alloy (gun metal/brass) bus rods of suitable length and dia with necessary nuts, washers and bushing packing to prevent oil leaking from the bushes including making necessary connections for transformer of capacity 40 KVA to 160 KVA complete all as specified and directed.

All as per srl item No 9 here-in-above but for transformer of capacity exceeding 160 KVA but not exc 500 KVA

Inspection of defective Servo Voltage stablizer of capacity 50 KVA upto 300 KVA of any make any type by step opening, removing the top cover of stabilizer, detecting the fault, rectfying the defect at site (Nagrota, Katra & Sanjhi Chatt) except major fault of burnt dimmer coil, burnt servo motor. The following tasks if required will be performed :- (a) Opening of the Voltage stablizer and removing the top cover for checking/rectified the faults of the servo voltage stablizer. (b) Replacement of defective/ burnt wires and checking external connections. (c) Refixing the top cover with nuts, bolts and washers. (d) Testing of Voltage stablizer Complete. Note : (i) In case of replacement of dimmer Coil, Servo motor, Toggles switch, PCB etc, will be measured and paid for separately under relevant items (ii) Oil (if required) for topping will be measured and paid for separately under relevant item

Supply and fix digital voltmeter 0 to 500 volts, 96 x 96mm, flush type, complete all as specified and directed.

Supply and fix LT current transformer as suitable for servo voltage stabilizer of capacity 50 to 300 KVA complete all as specified and directed.

Supply only PCB card/ plate for automatic voltage correction suitable for servo stabilizer of capacity 50 to 300 KVA, of type and make as per site requirement, complete all as specified and directed.

Supply and fix micro limit switch with cam lever for servo stabilizer of capacity 50 KVA to 300 KVA of type and make as per site requirement, complete all as specified and directed.

Supply and fix servo motor, synchronous type, of torque capacity 30 Kg for automatic voltage correction, suitable for servo stabilizer of capacity 50 KVA to 300 KVA of type and make as per site requirement, complete all as specified and directed.

Supply and fix over load relay suitable for 50 to 300 KVA voltage stabilizer complete all as specified and directed.

Supply and fix servo dimmer 200 Amps/ booster coil for automatic voltage correction suitable for servo stabilizer of capacity 50 KVA to 300 KVA of type and make as per site requirement, complete all as specified and directed.

Supply and fix terminal connections with brass rod with bush suitable for servo stabilizer of capacity 50 KVA to 300 KVA of any type and make as per site requirement, complete all as specified and directed.

Servicing of 33/11 KVA up to 6.3 MVA Power transformer outdoor type externally included all accesories such as (conservator tank, marshalling box , bushing, buchholz relay radiator, oil level indicator) complete and checking the outgoing and incoming terminal connection complete with following testing:- a) Transformer oil testing for dielectric strength. b) Buchholz relay alarm test and trip testing. c) Oil temperature alarm and trip testing. d) Winding temperature alarm and trip testing. e) Meggar testing between HV and Earth. f) Meggar testing between LV and Earth g) Meggar testing between HV and LV h) Earth Resistance test of transformer neutral i) Earth Resistance test of transformer body Note : Contrator shall provide the testing result to Engineer- in- charge.

Filteration, heating, dehydration of transformer oil (at site) on load system, EHV grade having di-electric strength not less than 60 KV with 2mm gap high viscosity in transformer of capacity 40 KVA to 500 KVA as per IS-335 of 1983. The reducing moisture, acidity carbon particle in transformer oil. Note:- The filteration, heating, dehydration of transformer oil shall be carried out at site. The unit rate quoted by the contractor shall deemed to include for arrrangement of filtration machine and its transportation to various location of installation of transformer and top up of transformer oil.

Supply, treating (dehydrating), filling new transformer oil in transformers for topping up levels or for replacement of unfit oil. New oil having dielectric strength not less than 60 KV at 2mm gap and shall be conforming to IS 335. Note : The Empty Barrel is the property of department. Supply should be given in Sealed Containers.

Taking out old breathers from transformer and supplying & fixing new breather duly filled with activated agent i.e. silca gel for transformer of cap 6.3 MVA.

Taking out old breathers from transformer and supplying & fixing new breather duly filled with activated agent i.e. silca gel for transformer of cap 40 KVA to 500 KVA.

M & L for taking out unserviceable tap changing gear for replacement, including supply & fixing, making connections, testing & commissioning new tap changing gears in transformers of any description / rating and make complete all as specified and directed.

M&L of transformer plateforms of size 2.50 m x 2.50m x 1.20m with following specifications as under( as per TD of Plateform) :- a) Brick work in sub class B brick old size burnt clay bricks exc 6m mean radius on plan in cement mortar 1:4 complete all as specified and directed b) PCC 1:3:6 as in foundation filling and mass concrete c) Stone boulder filling n.exc 63mm including hand packing and ramming complete d) PCC 1:2 :4 as in flooring / top surface of plate form complete e) Plastering to brick work in CM 1:4 complete f) Angle iron as in post for fencing g) Chain link fencing of any size 4 mm dia GI wire Note : During plateform repair, contractor shall arrange the Hydra Machine for Lifting the transformer from existing plateform to nearby locations with temporary fencing around it.

MS Framed work as in framed structure (around 4 pole/2 pole/ LT panel/ Transformer) guard bars, framed balusters and similar works complete including PCC work as in foundation complete all as specified.

Expended metal cut to length, bend to required shape weight not less than 4 kg/Sqm and laying with and including annealed MS wire or welded to steel members complete all as specified.

Material and labour for spreading and levelling evenly (any thickness) 20 mm graded stone aggregate complete all as specified and directed.

Material and labour for spreading and levelling evenly (any thickness) 40mm graded stone aggregate complete all as specified and directed.

Labour and tools for trimming tree branches up to 100 mm grith of any location around existing HT/LT OH lines with any no. of conductors giving clearance of 1.5 m on all sides after arranging shut down and taking all precaution while working on lines including all T&P required for the purpose complete all as specified and directed by Engineer-in- charge. Note : The contractor shall arrange the tree cutting machine and vehicle mounted telescopic ladder for the same.

Earthing complete with galvanised steel earth plate electrode 60cm×60cm× 6mm thick, buried directly in ground (earth pit not less than 2.25 metres deep below ground level) with top edge of the plate not less than 1.5 metres below normal ground level, using galvanised iron strip 25×4mm as earthing lead connected to using galvanised iron strip 25×4mm by means of bolts, nuts, check nuts and washers of galvanised iron or steel all as shown in electrical plate No. 3 connected to earthing test point all as specified or indicated including testing on completion all as specified and directed by Eng In Charge.

Supply and fixing in repair aluminium strip of size 25 x 3.15mm with saddles and fixing screws etc. for roof conductors and down conductors above ground, complete all as specified and directed.

Supply and fixing in repair cable jointing kit for 11 KV (Earthed) grade cable for outdoor termination heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 50 sqmm to 95 Sqmm.

All as per srl item No 34 here in before but for cable of cross sectional area 120 to 185 sqmm outdoor type

All as per srl item No 34 here in before but outdoor joint for cable of cross sectional area 240 to 300 sqmm

Supply and fixing in repair cable jointing kit for 11 KV (Earthed) grade cable for straight through heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 95 sqmm outdoor type

All as per srl item No 37 here in before but for cable of cross sectional area 120 to 185 sqmm outdoor type

S&F in replacement switch air break gang operated (Swing out expulsion fuse insulators), triple pole mechnical operated from ground level mounted on insulator and steel frame (15 insulators type) out door type suitable for vertical installation single break provided with locking arrangement consisting of MS channel HT post top insulator with drop out fuses operating rod 20mm dia GI medium grade pipe worked from ground level conforming of IS 1818 of 1972 and contineous current rating upto 200 amp and volt 11 KV complete in repairs including taking out old unserviceable GOD complete all as specified.

S&F in replacement switch air break gang operated (Swing out expulsion fuse insulators), triple pole mechnical operated from ground level mounted on insulator and steel frame (12 insulators type) out door type suitable for vertical installation single break provided with locking arrangement consisting of MS channel HT post top insulator with drop out fuses operating rod 20mm dia GI medium grade pipe worked from ground level conforming of IS 1818 of 1972 and continuous current rating upto 200 amp and volt 11 KV complete in repairs including taking out old unserviceable GOD complete all as specified.

S&F in replacement switch air break gang operated (Swing out expulsion fuse insulators), triple pole mechnical operated from ground level mounted on insulator and steel frame (15 insulators type) out door type suitable for vertical installation single break provided with locking arrangement consisting of MS channel HT post top insulator with drop out fuses operating rod 20mm dia GI medium grade pipe worked from ground level conforming of IS 1818 of 1972 and continuous current rating upto 400 amp and volt 11 KV complete in repairs including taking out old unserviceable GOD complete all as specified.

M&L for PCC 1:4:8 type D-2 (using 40mm graded crushed stone aggregates) as in foundation filling and mass concrete in foundation of pole/stays etc complete all as specified

M&L for PCC 1:3:6 type C-2 (using 40mm graded crushed stone aggregates) as in foundation filling and mass concrete in foundation of pole/stays etc complete all as specified

M&L for PCC 1:2:4 type B-1 (using 20mm graded crushed stone aggregates) as in coping/above ground level around the pole etc complete all as specified.

Supply and fixing steel tubular pole, swaged, complete with cast iron base plate, finial taper plug, bolts, nuts, washer and screws including painting with two coats of aluminium paint over one coat of red oxide primer on all exposed surfaces and tarring with black bituminous paints to portion embedded in PCC including numbering of poles with two coats of synthetic enamel paints,type 410 SP-55 (11.0 metres long) complete, including disconnecting and taking out old damage PCC pole all as directed .

M & L for Cross arms, bracing, supports, clamps and back plate, fabricated from structural steel section including nuts, bolts, washers, welding, bending cold or hot, drilling holes for bolts, in any shape or size as directed including two coats of synthetic enamel paint over a coat of red oxide primer, including dismantling existing cross arms, bracing, supports, clamps and back plates from existing poles / dismantled poles / pole structures complete all as directed.

Excavation in trenches not exceeding 1.5m wide and not exceeding 1.5m in depth and getting out in any type of soil for errection of HT/LT poles laying of HT/LT UG cables and provn of stay assembly complete all as specified.

Excavating in trenches, not exceeding 1.5m wide and exceeding 1.5m but not exceeding 3m in depth for foundation, etc or not exceeding 10 Sqm on plan and exceeding 1.5m but not exceeding 3m in depth for shafts, cesspits, manholes, pier holes, etc and getting out in any type of soil complete all as specified.

Returning, filling in, including spreading levelling, watering and well ramming in layers not exceeding 25 cm thick in any type soil complete all as specified.

Removing excavated material not exceeding 50m and depositing where directed at a level not exceeding 1.5m above the starting point and entire satisfaction of Engnr-in-Charge complete all as specified and directed

Sand dry clean as cushioning to underground electric cable provided with a layer of 80mm deep before laying and 150mm over cable laid in trenches complete all as speficied. Note:- Punned thickness of sand shall be measured.

Supply & Laying un-reinforced precast concrete cable cover of size 300x180x40 mm for protection of cable, laid transversally along the length of cable complete all as specfied and directed.

Brick covering with width equal to length of brick as mechanical protection to cables with well burnt sub class ‘B’ (old size) bricks laid dry flat all as directed.

Supply, laying, jointing and testing of under ground cables XLPE insulated screened PVC bedded galvanized steel strips armoured electric power cable (heavy duty) with aluminium conductor HT 11000 volts grade and cross sectional area 185 sqmm 3 core conforming to latest IS and ISI marked complete all as specified and directed by Engr-in-Charge,

Supply, Laying, jointing and testing of under ground cables XLPE insulated screened PVC bedded galvanized steel strips armoured electric power cable (heavy duty) with aluminium conductor HT 11000 volts grade and cross sectional area 95 sqmm 3 core conforming to latest IS and ISI marked complete all as specified and directed by Engr-in-Charge,

Supply, laying, jointing and testing XLPE insulated PVC sheathed armoured under ground cable heavy duty with aluminium conductor LT 1100 V grade cross sectional area 240 Sqmm 3.5core, complete all as specified and directed by Engineer-in-Charge

Supply & fixing in position cable path indicator made out of MS sheet of thickness minimum 10mm circular in shape duly embosing the words "HT cable" fixed on MS angle iron of size 35x35x4mm, at a distance of every 50 mtr & painting the indicators with 2 coats of synthetic enamel paint (Silver colour) over a coat of red oxide primer complete all as specified and directed.

Supply and install HT Bus bar chamber with front & rear opening with proper Locking arrangment factory made, weather and vermin proof having size 90x90x60 cm made out of 3mm thick MS Sheet wih 200 Amp rated Aluminium bus bar and with 11 KV pedestal type HT Insulators 6 No with angle iron frame of size 75x75x6mm duly painted with 2 coats of enameled paint & neccesary PCC work for foundation also including CT/PT and suitable MF meter and indicator Lamp complete all as specified and directed by Engr-in-Charge.

Steel tubing galvanized (Light grade) 100mm bore conforming to IS -1239 for passing cable under road /floor or fixing to poles for protection of underground cable complete with flat iron 50x6 mm clamps made to shape and 12mm dia bolts, nuts and washers for fixing where required. Note:- Excavation and earth work shall be measured and paid separately.

Steel tubing galvanized (Light grade) 80mm bore conforming to IS -1239 for passing cable under road /floor or fixing to poles for protection of underground cable complete with flat iron 50x6 mm clamps made to shape and 12mm dia bolts, nuts and washers for fixing where required. Note:- Excavation and earth work shall be measured and paid separately.

Note:- 1) The work under this schedule (Item No. 1 to 60) are meant for maint of External Electric Supply in Nagrota Mil Stn (including Katra, Sanjhi Chat, Charlie Hill). The work shall be executed on ground on required basis. Contractor responsibility is to liaise with the department concerned for HT supply shut down required to carry out the work & also ensure the safety of labour employed by giving them safety equipments like helmet, gloves, safety belt , discharge rod etc and nothing extra shall be permisissible in this account. 2) Schedule of credit Rs. 3,67,395.00 will be deducted from total amount quoted while accepting the bid. Details of schedule of credit is given in tender documents.

BMMJ TRADERS AND ENGINEERS (BID ID -3131453)

Nitika electricals and engineers works (BID ID -3120260)

MAMTA ENTERPRISES (BID ID -3121487)

PROACH ASSOCIATES BUILDERS & ENGINEERS (BID ID -3118014)

M/S JIWAN SINGH (BID ID -3122262)

M/S SOHUM ENGINEERS (BID ID -3121801)