REPAIR AND MAINTENANCE OF HT UNDERGROUND CABLE, TRANSFORMER, VCB/OCBS AND CONNECTED ACCESSORIES AT 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.

All as per srl No.1 above but depth exc 1.5 mtr and not exc 3.00 mtr complete all as specified and directed.

Returning, filling in trenches including spreading, levelling, 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.

Supply & laying Sand coarse dry as in cushioning of underground electric cable in trenches, laid to a uniform thickness of 23cm (15cm under the cable & 8cm over the cable ) and gently punned down to 18cm thickness all complete all as specified and directed. Note :- Only punned down sand thickness 18CM shall be measured and paid.

Material and labour for un-reinforced precast concrete cable cover class 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 specified and directed.

Supplying and laying old size bricks, laid flat ie length of brick shall be laid across the cable, common burnt clay building bricks sub class `B' designation 75 complete all as specified and directed and testing on completion complete all as specified and directed.

Material and labour for plain cement concrete 1:4:8 type D2 using 40 mm graded stone aggregate for foundation filling of poles as mass concrete complete all as specified and directed.

Material and labour for PCC 1:2:4 type B-1 using 20 mm graded crushed stone aggregate as in coping of poles/stays etc complete all as specified and 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 150 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 and laying 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 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 50 to 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 50 to 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 50 to 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 150x150x200 mm foundation up to 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 steel tubular swaged pole 11 mtr long with mild steel base plate of size 450x450x6mm, finial taper plug, bolts, nuts and screws as specified type 410 SP 55, including painting with anti-corrosive paint internally complete and externally complete with two coat of synthetic enamel aluminium paint over a coat of red oxide primer and preparation of surface including marking of pole nos with black paint complete all as specified and as directed. Note:- Excavation and earth work shall be measured and paid seperately.

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 one primer coat, one under coat and one finishing coat of aluminium paint complete all as specified and directed.

Material and labour for replacement of existing unserviceable disc type insulator porcelain vitreous 145 mm height and 225 mm dia ball and socket type white brown or green with tension clamp for conductor working pressure 11000 volts complete all as specified and directed.

Material and labour for replacement of existing unserviceable pin type insulator porcelain vitreous white brown or green insulator including one galvanized spindle two galvanized washer and one galvanized nut 150mm height and 150mm dia for working pressure 11000 volts 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 Petroleum 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 enamel paint complete all as specified and directed. Note: No extra payment will be made for the spares required to keep the two pole structure in satisfactory functioning state throughout contract period.

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 Petroleum 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 enamel paint complete all as specified and directed. Note: No Extra payment will be made for the spares required to keep the four pole structure in satisfactory functioning state throughout contract period.

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 through contract period by repeatedly by remaining the grass/shrubs as many time required depending on the growth of grass measurement will be measured and paid only once throughout contract period.

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, tripple 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 cutting/trimming tree branches along the overhead HT/LT lines up to 3.0 mtr radial distance from electric line on both sides of the span and disposing of the cut tree/branches at places complete all as specified and 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, preparation of surfaces for repainting and painting the poles with one coat of aluminium paint, marking the pole No/feeder name with black enamel 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 bracket etc. Marking the pole No/feeder name with black enamel 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 bracket etc. Marking the pole No/feeder name with black enamel paint complete all as specified and directed.

Supply and fixing 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 male contact with arching horn 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 up to 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 any type and capacity lifting transporting the same up to 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 enamelled copper wire as per existing winding gauge 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 enamelled copper wire as per existing winding gauge 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 250 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, replacing silica gel, replacing the worn out copper alloy nuts and tightening the earth terminals complete all as specified and directed.

Material and labour for filtration/dehydration of transformer oil through filtration plant to improve the dielectric strength/insulation value of transformer oil up to 50 KV at 2.5 mm gap for various capacity of 11 KV/ 433 volts step down transformer and HT OCB installed in various location complete all as specified and directed.Note: (a) The contractor will take shut down orders from Engineer in charge before commencement of the work (b) The contractor shall ensure no wastage of existing transformer oil. (c) The contractor solely responsible for any damages to the transformer/HT OCB during the process of oil filtration. He is responsible for making good any damage to the transformer/HT OCB at his own cost without any extra cost to the department. (d) The contractor shall ensure that the conservator tank are full to 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 400 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 of 500 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 electric strength of oil not less than 50 KV complete all as specified and directed. (Note: Oil should be brought 209 ltrs sealed container)

Repair, maintenance and servicing to HT VCB 11 KV 630/800 Amp of any make and description. Taking out VCB trolley, dismantling, opening and removing unserviceable /defective parts including cleaning, oiling and greasing of the parts etc and replacement of unserviceable 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 separately under respective items as supply only. (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 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 re fixing the same.

Supply only Vacuum interrupter 11 KV complete all as specified and directed.

Supply only shunt closing coil 110 V DC complete all as specified and directed.

Supply only shunt opening coil 110 V DC complete all as specified and directed.

Supply only spring charging geared motor for 220 V 50 Hz AC complete all as specified and directed..

Supply only enbloc polycarbonate complete all as specified and directed.

Supply only relay of HT VCB 11 KV 1250 Amp having protection of over current trip, earth fault trip, cable arc trip, breaker arc trip, bus bar arc trip, phase unbalance trip, U/V trip, O/V trip, Res O/V trip, TOL trip and TCS unhealthy complete all as specified and directed.

Supply only relay of HT VCB 11 KV 1250 Amp having protection of over current trip, earth fault trip, cable arc trip, breaker arc, trip bus bar arc trip, trafo fault trip, TCS unhealthy complete all as specified and directed.

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 150/75/5+ 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.

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 overhead 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 Ampere 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.

Supply, installation, testing and commissioning of 110 volts DC stationary automatic float cum booster lead acid battery charging unit housed in sheet metal cabinet of 1.6 mm thick comprising the following parts/items :- (a) Battery charger suitable for charging 55 Nos 2 volts 150 AH tubular cell trickle and high/boost 110 volts DC output and 230 volts AC input 110 volts construct output. (b) Ampere meter digital type AC & DC with protection fuse. (c) Voltmeter digital type AC & DC with protection fuse. (d) Indicating lamp set for AC and DC (e) Provn of outgoing MCB DP 4 Nos for outgoing DC circuit of electrical equipment’s. (f) Provn of high and low voltage relay with PCB as required including complete connection with battery bank and existing HV panels of MRS.

Supply, installation, testing and commissioning of maintenance free dry tubular cell 2 volts 150 AH complete with rack to store the tubular cell complete with connecting leads/links complete all as specified and directed. Make:- Exide/Amron/AMRON/LUMINUOUS .

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 conventional 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 superior 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 plate form 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 1.00 complete all as specified and directed.

Up to 200 KVA

Above 200 KVA up to 500 KVA

Above 500 KVA up to 1000 KVA

Material and labour for stone graded course aggregate of 63 mm grade nominal size without any vegetation or chemical including levelling /spreading surrounding HT/LT 2/4 pole structure, LT/HT panel complete all as specified and directed.

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

Supply, laying, jointing and testing aerial bunched cable aluminium conductor XLPE insulated 95 sq mm 3 core with insulated messenger of size 70 sq mm armoured heavy duty 11 KV grade including taking out/down old existing unserviceable cable complete all as specified and directed.

Material and labour for pole clamp with suitable hook for hanging of aerial bunched cable with insulated messenger as per manufacturer recommendation and site requirement complete all as specified and directed.

Supply, installation, testing, commissioning and calibration of maximum demand controller with standard size 96 mm X 96 mm specifically designed to keep a check on maximum demand. It should gives an alarm when demand approaches a pre-set value and also switches off non-essential loads in a pre-programmed logical sequence. This predictive maximum demand controller MDC) allows stage wise load restoration to maximize the use of a sanctioned load complete with control wiring, contactor and other accessories required etc complete all as specified and directed.

Material and labour for earthing with steel earth plate electrode of size 60x60cmx6mm thick buried directly in ground to a depth not less than 2.25 mtr deep below normal ground level with top edge of the earth plate not less than 1.5 mtr deep below normal ground level connected to galvanized iron strip of size 32 X 6mm as earthing lead by means of nuts, bolts and washers of steel after welding of GI strip to earth electrode to the full length of earth plate,40mm dia GI tubing light grade protection pipe up to test point, 20mm dia GI watering pipe with funnel and wire mesh, PCC pit 1:3:6 with pit cover of size 30X30cm made of RCC 1:3:6 with suitable handle, angle iron frame made of angle iron of size 40x40x4mm, adequate qty of charcoal dust and salt layers all around the earth plate, removal of surplus soil and returning filling in all as required at site including test point made out of steel plate of size 75x75x6mm fixed to wall all as specified in plate No 3 of SSR Part-I and directed.

Material and labour for earth continuity conductor of size 25 X 4 mm GI. strip fixed to wall and batton or recess or chases or buried in ground or drawn in conduit/pipe or fixed in ground or drawn in conduit/pipe or fixed to poles or any other indicated situation for loop earthing complete all as specified and directed.

M/s Anamika Enterprises

M/s Kamal Traders

venus engineers

RAMAPATI ENGINEERING SERVICES

Meher enterprises