REPAIR AND MAINTENANCE OF HT UNDERGROUND CABLES, TRANSFORMERS, VCBs INCLUDING CONNECTED WORKS UNDER GE IMA DEHRADUN

Amount

Excavation in trenches n. exc. 1.5 mtr wide and n. exc. 1.5 mtr in depth in soft/lose soil for laying cable/taking out under ground cable GI pipes and getting out in soft/loose soil complete all as specified and directed.

Returning, filling in trenches including spreading, leveling, watering and well ramming in layers n. exc. 25 cm thick in soft/lose soil after cable/pipes are laid and tested complete all as specified and directed.

Removing the excavated soil to a distance n. exc. 50 mtr and depositing where directed at a level not exc. 1.5 mtr above the starting point complete all as specified and directed.

Material and labour for sand cushioning to under ground cables 8 cm thick before laying the cable and 15 cm, thick after laying, stretching and testing the cable complete all as specified and directed.

Material and labor for brick protection cover (0.23x0.115x0.075m) to undergroung cable with sub class "B" over brunt brick (locally available best quality) laid dry and flat abutting each other with gaps not exceeding 10mm complete all as specified and as directed.

Material and labour for un-reinforced precast concrete cable cover HV type I, flat size 300 mm X 180 mm X 40 mm as protection to underground cable laid dry and flat adjoining each other complete all as directed.

Supply, laying, jointing and testing cable XLPE insulated screened PVC bedded galvanized steel strip or wire armoured, electric power cables (Heavy duty) 11000 volts grade with stranded aluminum conductor of cross sectional area 3 core 185 sq mm including taking out/down old existing unserviceable cable complete all as specified and directed.

Supply, laying, jointing and testing cable XLPE insulated screened PVC bedded galvanized steel strip or wire armored, electric power cables (Heavy duty) 11000 volts grade with stranded aluminum conductor of cross sectional area 3 core 120 sq mm including taking out/down old existing unserviceable cable complete all as specified and directed.

Supply, laying, jointing and testing cable XLPE insulated screened PVC bedded galvanized steel strip or wire armored, electric power cables (Heavy duty) 11000 volts grade with stranded aluminum conductor of cross sectional area 3 core 150 sq mm including taking out/down old existing unserviceable cable complete all as specified and directed.

Supply and laying cable XLPE insulated screened PVC bedded galvanized steel strip or wire armored, electric power cables (Heavy duty) 11000 volts grade with stranded aluminum conductor of cross sectional area 3 core 95 sq mm including taking out/down old existing unserviceable cable complete all as specified and directed.

Material and labour for 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 size 95 sq mm complete all as specified and directed.

Material and labour for 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 size 120 to 185 sq mm complete all as specified and directed.

Material and labour for 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 95 sq mm complete all as specified and directed.

Material and labour for 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 120 to 185 sq mm complete all as specified and directed.

Material and labour for 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 sq mm complete all as specified and directed.

Material and labour for 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 120 to 185 sq mm complete all as specified and directed.

Supply and fixing HT cable root indicator of cast iron embedded in PCC 1:3:6 type C-2 (using 20 mm graded stone aggregate) of size 100x100x200 mm foundation upto ground level including necessary earth work in any type of soil complete all as specified and directed.

Material and labour for replacement of existing unserviceable cross arms, bracings, supports, clamps and back plates fabricated from steel section including nuts, bolts, washers, welding bending cold or hot drilling holes for bolts in any shape ors size as indicated or directed and inclusive of oneprimer coat, one under coat and one finishing coat of alumn paint complete all as specified and directed.

Material and labour for servicing of two pole, structure complete including replacement of unserviceable jumper, sleeve vice type connector GI Clamps 'T' connector run connector run through clamps, bolts nuts washer connecting lugs/thimbles knife, contacts applying Petrolium jelly to the moving as well fixed contacts, tightening all the connection for its smooth functioning and preparing old painted surface of the structure such as poles, cross arms, bracing and supports clamps back plate complete painting of one coats of anti corrosive aluminium paint complete all as specified and directed. Marking the pole No/feeder name with black enamell paint complete all as specified and directed. Note: No Extra payment will be made for the spares reqd to keep the two pole structure in satisfactory functioning state throughout contract period other then given in schedules.

Material and labour for servicing of four pole, structure complete including replacement of unserviceable jumper, sleeve vice type connector GI Clamps 'T' connector run connector run through clamps, bolts nuts washer connecting lugs/thimbles knife, contacts applying Petrolium jelly to the moving as well fixed contacts, tightening all the connection for its smooth functioning and preparing old painted surface of the structure such as poles, cross arms, bracing and supports clamps back plate complete painting of one coats of anti corrosive aluminium paint complete all as specified and directed. Marking the pole No/feeder name with black enamell paint complete all as specified and directed. Note: No Extra payment will be made for the spares reqd to keep the four pole structure in satisfactory functioning state throughout contract period other then given in schedules

Material and labour for cutting, removing the vegetation growth and surface dressing all around the installation yard/transformer/LT panel Board areas external only to keep always installation clean and tidy. Note: All the installation yards/area shall be kept clean throught contract period by repeatedly by remaining the grass/shrubs as many time reqd depending on the growth of grass measurement will be measured.(3000 sqm area will be measured after three months after commencement of work and remaining 3000 sqm area will be measured after completion of work.)

Supply, installation. connecting electrically and commissioning switch air break, gang operated, triple pole mounted on insulators 15 Nos and steel frame with operating mechanism in worked from ground level, drop out fuse, for current rating 200 amps and working voltage 11000 volts including taking down old unserviceable switch air break, gang operated complete all as specified and directed.

Supply, installation. connecting electrically and commissioning switch air break, gang operated, triple pole mounted on insulators 15 Nos and steel frame with operating mechanism in worked from ground level, drop out fuse, for current rating 400 amps and working voltage 11000 volts all including taking old unserviceable switch air break, gang operated as required at site or directed.

Material and labour for replacement of galvanised steel tubes light grade 100 mm bore with fittings laid for protection of cable under road crossing fixed to walls or pole complete all as specified and as directed. (Note: Clamps for fixing pipe, nuts, bolts washers shall be measured separately )

Material and labour for replacement of galvanised steel tubes light grade 80 mm bore with fittings laid for protection of cable under road crossing fixed to walls or pole complete all as specified and as directed. (Note: Clamps for fixing pipe, nuts, bolts washers shall be measured separately )

Material and labour for scraping of old paint from steel tubular pole 11 mtr height without removing accessories and preparation of surfaces for repainting. Painting the poles with one coat of aluminium paint, marking the pole No/feeder name with black enamell paint complete all as specified and directed.

Material and labour for scraping of old paint from steel tubular pole 11 mtr height two pole structure without removing accessories and preparation of surfaces for repainting. Painting the poles with one coat of aluminium paint including painting the remaining iron parts i.e. cross arms, supporting angles, XPM jali, clamps, GI bkt etc. Marking the pole No/feeder name with black enamell paint complete all as specified and directed.

Material and labour for scraping of old paint from steel tubular pole 11 mtr height four pole structure without removing accessories and preparation of surfaces for repainting. Painting the poles with one coat of aluminium paint including painting the remaining Iron parts i.e. cross arms, supporting angles, XPM jali, clamps, GI bkt etc. Marking the pole No/feeder name with black enamell paint complete all as specified and directed.

Supply and fixing male female contact spring loaded having brass contacts suitable for GOD up to 400 Amp for working pressure 11000 volts, galvanised iron bolts, nuts and washers for fixing with post insulator or any other indicated situation complete all as specified and directed.

Supply and fixing copper braided belt 400 mm long with MS carrier suitable for GOD upto 400 Amp for working pressure 11000 volts, galvanised iron bolts, nuts and washers for fixing complete all as specified and directed.

Disconnecting the transformer HT/LT cables earthing leads/strips complete 11/0.433 KV upto 400 KVA and capacity lifting transporting the same upto work shop for repair and dismantling (both side) the complete transformer accessories for repair/replacement to make the transformer serviceable including testing of transformer on load at site after repair complete all as specified and directed. Note: (i) Spares/accessories measured and paid separately under relevant items including refixing the transformer on platform and commissioning of transformer at site as directed. (ii) The transformer shall be repaired in authorized workshop of manufacturer and original bill of the same will be submitted by the contractor as proof.

Disconnecting the transformer HT/LT cables earthing leads/strips complete 11/0.433 KV of 500 KVA to 1000 KVA and capacity lifting transporting the same upto work shop for repair and dismantling (both side) the complete transformer accessories for repair/replacement to make the transformer serviceable including testing of transformer on load at site after repair complete all as specified and directed. Note: (i) Spares/accessories measured and paid separately under relevant items including refixing the transformer on platform and commissioning of transformer at site as directed. (ii) The transformer shall be repaired in authorized workshop of manufacturer and original bill of the same will be submitted by the contractor as proof.

Material and labour for winding of transformer with supper enameled copper wire of existing gauge of retrived winding for transformer HV side suitable for 11/0.433 KV step down distribution type any capacity complete all as specified and directed.

Material and labour for winding of transformer with supper enameled copper wire of existing gauge of retrived winding for transformer LV side suitable for 11/0.433 KV step down distribution type any capacity complete all as specified and directed.

Material and labour for preventive maintenance/repairs to transformer step down 11 KV/0.433 KV of any type 100 to 1000 KVA of any make including cleaning the transformers externally throughly with lint free cloth, tightening the HT/LT terminal nuts, opening the top cover and replacing the perished gasket of top cover, replacing sight glass, refilling silca gel, replacing the worn out copper alloy nuts and tighting the earth terminals complete all as specified and directed.

Material and labour for filteration/dehydration of transformer oil through filtration plant to improve the dielectric strength/insulation value of transformenr oil upto 50 KV at 2.5 mm gap for various capacity of 11 KV/ 433 volts step down transformer installed in various location complete all as specified and directed. Note: (a) The contractor will intimate 3 days before commencement of the work from Engr in charge. (b) The contractor shall ensure no wastage of exixting transformer oil. (c) The contractor solely responsible for any dammages to the transformer during the prosses of oil filtration. 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 tank fill up upto its level before starting the dehydration.

Material and labour for replacement of LT metallic rod stud and nuts of existing size duly threaded made out of brass/gun metal up to 400 KVA capacity transformer 11/0.433 KV complete all as specified and directed.

Material and labour for replacement of LT metallic rod stud and nuts of existing size duly threaded made out of brass/gun metal of 500 to 1000 KVA capacity transformer 11/0.433 KV complete all as specified and directed.

Material and labour for replacement of HT metallic rod stud and nuts of existing size duly threaded made out of brass/gun metal up to 1000 KVA capacity transformer 11/0.433 KV complete all as specified and directed.

Supply, filling and topping up of transformer oil confirming to IS die eletric strength of oil not less than 50 KV complete all as specified and directed. (Note: Oil should be brought 209 ltrs sealed container). Make savita, Apar power Oil

Repair, maintenance and servicing to HT VCB 11 KV 630/800 Amp of any make and description. Taking out VCB trolley, disamntling, opening and removing unserviceable /defective parts including cleaning, oiling and greasing of the parts etc and replacement of unseviceable parts with new one, reassembling the VCB after overhauling/servicing and its testing complete all as specified and directed. Note. (i) The cost of replacement of defective spare parts shall be measured and paid seperatly under respective items. (ii). The rates quoted by the contractor shall include the cost of all tools, materials and labour required for dismantling / taking out and re-assembling of of VCB. (iii). The rates quoted by the contractor shall include the cost of replacement of worn out nuts, bolts, gaskets, A-grade greasing and oiling of moving parts and refixing the same.

Vaccum interrupter 11 KV of Make CG or equivalent in ABB/Siemens.

Shunt closing coil 110 V DC of Make CG or equivalent in ABB/Siemens.

Shunt opening coil 110 V DC of Make CG or equivalent in ABB/Siemens.

Spring charging geared motor set for 220 V 50 Hz AC of Make CG or equivalent in ABB/Siemens.

Relay of HT VCB 11 KV 1250 Amp for incomer/outgoing VCB having protection of over current trip, earth fault trip, cable arc trip, breaker arc trip, bus bar arc trip, phase unbalancec trip, U/V trip, O/V trip, Res O/V trip, TOL trip and TCS unhealthy complete all as directed. Make: ABB Model; REF 615 or equivalent in L&T/Siemens.

Dismantling and taking out existing unserviceable current transformer of any description and in any position and Supply, installation , commissioning and testing of indoor epoxy type 11 KV current transformer having ratio 100/50/5+ 5 Amps having protection core class IP10, burden of 15 VA and breaking cap of 18.4 KA for 1.0 second complete all as specified and directed.

Material and labour for dismantling of old unserviceable lightening arrester and supply and fix new lightening arrester non liner type confirming to IS No 3070 part I complete with all fittings, transmission class discharge capacity 65 KA suitable for 11 KV including making connections with over head line with ACSR conductor on poles complete all as specified and directed.

Material and labour for replacement of Digital volt meter 11 KV 3 phase range of accuracy 0.5 complete all as specified and directed.

Material and labour for replacement of Digital Amper meter 11 KV 3 phase range of accuracy 0.5 complete all as specified and directed.

Material and labour for replacement of LED Pilot lights 110 Volts DC Red /Green/Yellow/Blue complete all as specified and directed.

Material and labour for replacement of HRC Fuse 2/5/10 Amp complete all as specified and directed.

Material and labour for danger notice board with pressed vitreous painted plate fabricated out of 1.6mm thick mild steel sheet vitreous enamelled white with letters.figures and convertional skull and bones in signal red colour and fixed with MS clamp bolts and nuts of approved size for HT 25X20 cm size complete all as specified and directed.

Material and labour for preparation of old painted surfaces and cooling coils/fins of transformers of following capacities by removing oil marks using chemical or hot blow lamp. Spray painting to prepared surfaces using synthetic enamel paint of superoir quality of colour as approved as per standard engineering practice with two coats including painting the remaining iron parts i.e. supporting angles, XPM jali etc and white wash the transformer plateform with two coats. Writing SM No, MES No, Make and capacity with white paint having height not less than 2.5 cm and width not less than 1 cm all as required and directed.

Up to 200 KVA

above 200 KVA upto 500 KVA

above 500 KVA upto 1000 KVA

Material and labour for stone graded course aggregate of 40 mm grade nominal size without any vegitation or chemical including levelling /spreading surrounding HT/LT 2/4 pole structure, LT/HT panel complete all as specified directed .

Shifting and transportaion of transformer internally for one sub stn to another substn in IMA campus with the help of hydra including disconntion of HT side cable and LT side cable, earth strip etc and shift to the other side in suitable vehicls or as directed by Engr in charge.

Find the faulty of existing UG HT 11 KV cable 3 core, of different sizes in different location at IMA Campus by the help of fault locating electronic machine including excavation at pinpoint location and rectification of fault, reconnecting the cable both side after jointing the damaged portion complete all as required. Note The joint kit will be measure and paid separately.

Earthing complete for machinery equipment installed at power house/sub station withusing copper plate 60×60cm ×3.15mm thick electrode thick burried directly in ground (earth pit not less than 2.25 metres deep below normal ground level) vertically, with top edge of plate not less than 1.5 metre below normal ground level connected to 20×3mm copper strip as earthing lead by means of bolts, nuts, check nuts and washers of galvanised iron and protected with 40mm dia light grade GI pipe all as shown in electrical plate No 3 of MES Schedule Part-I connecting to earthing test point & to main switch board and testing on completion with and including necessary excavation and earth work in any type soil, earth lead connected to earth test point & to main switch board etc with & including adequate quantity of charcoal dust and common salt, test point, PCC (1:3:6) type C-1 (using 20mm graded crushed stone aggregate) for earth pit with 40 x 40 x 6mm mild steel angle iron frame for cover, internal surface of concrete shall be given 10mm thick plaster in CM 1:4, pre cast RCC (1:2:4) type B-1 (using 20mm graded crushed stone aggregate) 40mm thick cover, reinforced with 8mm dia deformed or TMT bars 3 Nos both way with 12mm dia round bar handle, GI medium grade watering pipe 20 mm dia with funnel and wire mesh and 40mm dia GI light grade earth lead protection pipe etc complete all as specified and directed..

Material & Labour for Earth continuity conductor or main earthing lead copper strip 20x3mm, laid in pipe/fixed on walls or any other position including jointing by tinned copper nuts, copper bolts and washers in addition to brazing at every joint complete including disconnecting & taking up or down existing unserviceable / deshaped, GI earth strip or taking down conductors of any size and in any position, including making good the disturb surfaces to match with the existing surfaces complete all as specified & directed.

S&F electrical insulation rubber mat – 33/11 KV / Class C (1 Mtr x 2 Mtr, 3mm Thickness) Blue Color, low temperature resistant, low leakage current and it also has flame retardant properties,anti – skid/shock proof/ISI Certified complete all as specified & directed.

M/s Kamal Traders (BID ID -3392524)

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Elmek Engineers (BID ID -3392772)

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JS CONSTRUCTION COMPANY (BID ID -3398581)

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