REPAIR/MAINT AND REPLACEMENT OF HT UG CABLE, OH VCB PANELS, TRANSFORMER AND ALLIED WORKS AT BIRPUR AND GHUNGHORA BDE UNDER GE DEHTRADUN

Amount

Excavation in trenches n. exc. 1.5 mtr wide and n. exc. 1.5 mtr in depth for laying of underground cable, foundation of pole and getting out in soft/loose soil complete all as specified and directed.

Excavation in trenches n. exc. 1.5 mtr in wide and exceeding 1.5 but not exceeding 3.0 mtr depth for foundation of pole and getting out in soft/loose soil complete all as specified and directed.

Returning, filling in excavated soil in trenches including spreading, leveling, watering and well ramming in layers n. exc. 25 cm thick complete all as specified and directed.

Removing of excavated soil to a distance n. exc. 50 mtr and depositing where directed at a level not exceeding 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

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.

Supplying and laying un-reinforced precast concrete cable cover, class HV type-1,flat size 300x180x40mm, all as specified and directed.

M&L for cement concrete (1:4:8) type D-2 (using 40 mm graded crushed stone aggregate) as in foundation filling and mass concrete for fixing poles etc complete all as specified and directed.

M&L for PCC (1:2:4) type B1 (using 20 mm graded crushed stone aggregate) for coping pole including necessary Steel form work and finishing exposed faces of concrete smooth and even using extra cement all as specified and directed.

M&L for route indicators made of PCC (1:2:4) type B1 (using 20mm graded aggregates) in rectangular blocks in sizes 60X20X20 cm buried in ground directly up to the depth of 45 cm and writing the details of underground cable in red paint on top of the PCC block over yellow enamel paint complete all as directed and specified.

Supplying, transporting , erecting and fixing in replacement steel tubular swaged poles type 410-SP-55 , 11.00 meter long, complete with cast iron base plate , heat resistance finial taper plug, bolts, nuts and screws as specified including painting with two coats of synthetic enameled paint over one coat of red oxide primer and 06 Nos bands/straps with white and red post office colour (30cm wide each) epoxy heat resistant paint at a distance 30cm from plinth block and numbering of poles with black synthetic enamel paint in 2.5 cm height including tarring/Bituminous paint one coat on steel surface embedded in concrete foundation complete all as specified.

M&L for pin type insulator porcelain, vitreous white/brown including one galvanized mild steel spindle, nut and two GI washers of size 150mm height, 150mm dia for 11000 volts complete all as specified and directed.

M&L in replacement single disc porcelain, vitreous white/brown insulator 255 mm dia and 145mm height assembly for tension with tension clamps for conductor working pressure 11000 volts complete all as specified and directed. .

M&L in replacement aluminium conductor steel reinforced (ACSR) complete of size complete all as specified and directed. (Note : Sag as applicable shall be added in measurements)

M&L for galvanised mild steel wire 3.15 or 4mm dia , cradle guards, hexagonal/rectangular cradle guard complete all as specified and directed.

Re stretching/ tightening of ACSR conductor of any size & GI earthwire of any size of HT overhead line on existing poles duly straining properly binding with extra aluminium binding wire to insulators complete all as specified and directed.

M&L for mild steel cross arms, bracing, supports, clamps and back plates fabricated from structural steel section (flat iron/angle iron/ MS sheet) including back plate, MS boxes made out of MS sheet, clamps or D clamps made out of MS flat iron made to shape including nuts, bolts, washers, welding, bending hot or cold, drilling holes for bolt in any size or shape as directed inclusive of two coats of aluminium paint over a coat of red oxide primer complete all as specified & directed.

Cleaning/ Attending earth LT/HT steel tubular/cement concrete pole 9/11 mtr long cleaning of bird nest/debris /loose hanging wire /and securing with binding wire complete all as specified and directed.

Trimming/cutting of tree branches to provide proper clearance around existing HT over head lines with clearance of 3mtr on all as per technical requirement including removing of cut branches of trees from site and depositing one place for burning/removing complete all as specified and directed.

M&L for stay assembly complete comprising of 20 mm dia galvanised stay rod 180 cm long MS galvanised stay plate size 300 x 300 x6mm thick for stay pole including loop insulator white with cover all dimension 140 x 25.5 mm clearance of hole 25mm for HT 11000 V all specified and as shown in electric plate No 1 of SSR part-I. Note: Earth and PCC work will be measured and paid separately.

M&L for Stay assembly complete with accessories as shown in electrical plate No. 1 of 20 mm dia for LT poles complete all as specified and directed. NOTES :- loop type insulator, stay clamps, excavation earth work and concrete work shall be measured and paid separately.

M&L loop type insulator with complete fittings porcelain, vitreous white or brown large size with over all dimensions 90x140mm , clearance of hole 25.5mm complete all as specified and directed.

M&L and fixing galvanised stay strand, 7/3.15 mm complete all as specified and directed.

Supply and fixing danger notice plate of 1.6 mm thick mild steel sheet, vitreous enameled white letters, figures and conventional skull bones in signal red colour and fixed with MS clamps, bolts and nuts of approved size for HT 25 x 20cm (11 KV) size all as specified and as directed.

Supply and Fixing anti climbing device ,Spikes type fabricated out of MS Bars (round, Square and Flat ) including nuts, bolts washers and welding in two halves mad to shape to suit the cross section of the pole complete all as specified and directed.

Repair to the HT VCB make ABB by disconnecting the VCB, opening out of HT bus bars chamber, disconnecting/dismantling of control wiring of the instruments panel and carry out the repairs ie cleaning of the contact points and adjustment of the contacts/moving mechanism for its smooth functioning and make/break of contacts. Note:- New spares/components shall be measured and paid separately as supply only under respective item.

S&F in replacement of one set of 3 Pole micro processor based relays MC-61A (L&T) type relay with instantaneous 2 Nos over current (50, 50N) element and 1 No Instantaneous earth fault (50, 50N) (o/c setting 50% - 200% and earth fault setting 20 % - 80% according to load suitable for 11 KV including calibration outgoing feeders relay setting accordingly to law complete all as specified and directed including disconnection and taking down existing relay complete all as specified and directed.

Supply only following parts of HT VCB 11 KV, AC 3 phase, 50 HZ indoor type for complete as per existing make all as specified and directed.

Control wiring of HT VCB panel with suitable size of copper wire complete with colour code ferrules and tinned copper lugs complete and making the system fully functional and automatic complete all as specified and directed.

Tripping coil 110 volt DC.

Bakelite housing set.

Spout set (set of three) shower and rose contacts.

Auxiliary switch.

Limit switch.

Rotary switch.

Auxiliary Contactor.

Closing Coil 110 volts.

Tripping lever.

Charging lever.

Changing gear for VCB.

Neon Indicator LED type lamp assembly 110 volts DC (R, Y, B).

Tripping pin.

Push Button.

Spring Charging motor complete 220 Volts.

Auxiliary relay type VAA, Model No VAA 12 Y F 26B, as per existing make LH Voltage 110 DC.

Auxiliary relay type VAA, Model No VAA 32ZG812BCH as per existing make sample, Make : Alstom.

Vaccume interrupter bottle as per sample suitable for 11//33 KV VCB at MRS.

Ammeter 0-150 Amps CT ratio 150/5 Amps.

Voltmeter 0-150 Amps PT ratio 11/110V.

Digital 3 line display multifunction meter having features to measure to measure Volt Ampere power factor active load etc.

Master trip relay suitable for 24/110 DC supply Make :- ABBC

Trip circuit supervision relay suitable for 110 volt DC

Selzer relay 8/12 pin suitable for 110volt DC

Disconnecting and taking out unserviceable damaged of any size of HT cable and Supplying, laying or fixing, jointing and testing HT under ground electric power cable , XLPE insulated, screened , PVC bedded, galvanised steel strip or wire armoured, (conforming to IS-7098 Part-I) , ISI Marked, with aluminium conductor multi stranded , heavy duty ,11000 Volts grade ( earthed ) , laid in trenches/ laid under floor, roads, paths or fixed on walls / on poles/ in ducts etc. complete including cable gland and lugging etc all as specified and directed of following sizes. Note: Excavation and GI Tubing shall be measured and paid separately under respective item of Sch 'A'.

95 Sqmm 3 core

120 Sqmm 3 core

M&L for heat shrinkable out door type cable end jointing kit complete for HT under ground cables 11000 volts grade and testing after jointing of the following sizes.

95 sqmm 3 core

185 sqmm 3 core

M&L for heat shrinkable Indoor type end jointing kit complete for HT under ground cables 11000 volts grade and testing after jointing of the following sizes :-

95 sqmm 3 core

185 sqmm 3 core

M&L for heat shrinkable straight through joint kit complete for HT under ground cables11000 volts grade and testing after jointing of the following sizes :-

95 sqmm 3 core

185 sqmm 3 core

Supply and lay in trenches fixed to poles wall laid in floor GI steel tubing medium grade with fitting GI clamps made out of 50 x6mm flat iron 02 Nos, bolt, nut & washers etc or wooden rubber bushing at the ends of complete all as specified and directed.

100mm bore

80mm bore

Material and labour for manual boring bocki system suitable for crossing GI pipe (for cable protection) up to size 80 mm dia under existing road, pavement, hard standing up to 10 mtr complete all as specified and directed.

M & L for cutting chases in hard standing road/path/drain etc for passing cables/pipes etc. size of cutting 100mm wide and 200mm deep and removing the excavated materials and disposal at 50 meter distance and making good the cutting after the pipe and cables are laid with PCC 1:3:6 type C-1 using 20mm graded stone aggregates complete all as specified and directed.

Disconnecting and taking down unserviceable GOD & supplying, installing, testing and commissioning of air break switch (GOD)(12 insulator type) HT 11 KV, AC 50C/S, TP Horizontal mounting type, mechanically operated from ground, mounted on 12 insulators 11 KV grade and steel frame, current rating up to 200 Amps complete with fuse mounting, fuse carriers and fuse elements of required capacity fixed the pole structure on channel angle iron cross arm with suitable GI nut bolt & washers etc with suitable size including testing complete and one pad lock 65 mm including dropant expulsion type fuses with barrels of required capacity to suit load at site complete all as specified and directed.

Disconnecting and taking down unserviceable lightning arrestor supplying, fixing and testing Expulsion type lightning arrestor having rated voltage 11 KV and discharge current 65 KA suitable for 11000 Volt with mounted on MS plate 8 mm thick duly painted with aluminum paint bottom of size of lightning arrester including connection with earth strip connecting device complete all as specified and directed.

Servicing of two & four pole, structure complete including replacement of unserviceable jumper, sleeve vice type connector GI PG clamps 'T' connector run through clamps, bolts nuts, washer connecting lugs/thimbles knife contacts applying petroleum jelly to the moving contact as well fixed contacts, tightening all the connection for its smooth functioning complete all as specified and directed. Note :- No extra payment will be made for the spares required to keep the two & four pole structure in satisfactory functioning throughout contract period other than given in schedule.

Preparing old painted surface of the HT four pole structure such as poles, cross arm , bracing and supports clamps complete painting of two coats of synthetic enamel paint over a coat of red oxide zinc chrome primer provisioning of marking with alternative white and Red paint strip 30 cm wide including writing pole no with white paint size of letter note less than 100mm from the ground level complete all as specified and directed.

Preparing old painted surface of the Two pole structure such as poles, cross arm , bracing and supports clamps complete painting of two coats of synthetic enamel paint over a coat of red oxide zinc chrome primer provisioning of marking with alternative white and Red paint strip 30 cm wide including writing pole no with white paint, size of letter note less than 100mm from the ground level complete all as specified and directed.

Preparing old painted surface of the HT single pole structure such as poles, cross arm , bracing and supports clamps complete painting of two coats of synthetic enamel paint over a coat of red oxide zinc chrome primer provisioning of marking with alternative white and Red paint strip 30 cm wide including writing pole no with white paint size of letter note less than 100mm from the ground level complete all as specified and directed.

Shifting of transformer of any capacity up to 500 KVA from any installation two/four pole structure and fixing on another installation two/four pole structure (Appx.3000 mtr distance) including necessary connection complete on HT and LT side and testing on completion complete all as specified and directed..

Disconnecting of electric connation from transformer, feeder pillar etc and taking out LT cable (existing) of any size and type from the loop trench, dressing of cable including replacement of burnt out aluminium lugs and fixing with new lugs, nuts, bolts etc, complete including necessary excavation & earth work complete all as specified and directed..

Dehydration including filtration and cleaning of transformer oil at different locations by stream line method dehydration plant including testing of samples before and after dehydration and filtration. Dielectric strength shall not be less than 40 KV at 2.5 mm gap and to bring the acidity within to permissible limit below 0.5 mg KOH/Cm after dehydration all as directed. Note: (i) Test result before and after filtration to be recorded as per the sample provided by Engineer-in-charge. (ii) The rate quoted is deemed to be inclusive of making necessary connection and the connection to filtration plant from transformer and switch gear oil duly removing the inlet and outlet connections. (iii) For topping up transformer oil will be measured and paid separately under relevant item of BOQ.

Preventive maintenance/repairs to transformer step down 11 kv/0.43 KV out door type of any make and capacity including cleaning the transformers externally thoroughly 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 and conducting various tests as stipulated in the particular specification and maintaining relevant documents/records duly signed by JE E/M and Engineer-in-charge separately to each book let for equipments/machine on the prescribed printed forms.

Supply and filling of transformer oil for top up of transformer oil in sealed steel container 200 Ltrs capacity conforming to relevant IS 335/1993 as amended having dielectric strength not less than 45 KV for topping in 33/11 KV transformer all as directed. Note: (i) Filling of insulating oil shall be done by on line filtration plant. (ii) Manufacturers test certificate to be produced for claiming payment

Replacement of defective worn out HT bushing rod (stud) complete made of copper /brass with nuts and washers including threading at both ends for HT bushing of transformer outdoor of various sizes as per site requirement complete all as specified and directed.

Transformer 63KVA to 160 KVA

Transformer 200KVA to 315 KVA

Transformer 400KVA to 500 KVA

Replacement of defective worn out LT bushing rod (stud) complete made of copper /brass with nuts and washers including threading at both ends for LT bushing of transformer outdoor of various sizes as per site requirement complete all as specified and directed.

Transformer 63KVA to 160 KVA

Transformer 200KVA to 315 KVA

Transformer 400KVA to 500 KVA

S&F silica gel breather of suitable size with new silica gel breather including dismantling of old unserviceable silica gel breather complete up to 500 KVA transformer all as the sample approval/site requirement complete all as specified and directed.

Taking out the old silica gel in the breather of transformer and supply and refilling new silica gel in the breather complete all as specified and directed..

Preparation of old painted surfaces of transformer by scrubbing out cleaning and painting with one coat of spray paint and one coat primer heat resistant metallic smoke grey paint complete metallic painting including writing MES No/SM No/Srl No on transformer body with black paint for the following capacity transformer complete all as specified and directed.

Transformer 63KVA to 160 KVA

Transformer 200KVA to 315 KVA

Transformer 400KVA to 500 KVA

Disconnecting defective outdoor/indoor power distribution transformer of various size from HT/LT sides taking out complete transformer oil storing the same in suitable containers ( to be provided by contractor ) opening the top cover and lifting up the core assembly carefully to check the condition of transformer winding core retaining the same after repair refilling the transformer oil after dehydration and filtration including checking of leakage of transformer body and welding works required for making transformer body leak proof transportation of transformer from site to work shop and reinstallation the same at any site as directed by Engineer-in- charge, capacity of transformer 63KVA to 160 KVA. Note:- The materials required for rectification of defects such as rewinding/core/transformer oil, bushes etc shall be measured and paid separately under respective item of this sch. (dehydration and filtration to be paid separately)

Description all as per srl item No -53 here in before but Transformer of capacity 200KVA to 320 KVA

Description all as per srl item No -53 here in before but Transformer of capacity 400 KVA to 500 KVA

Dismantling and taking down out door transformer from two pole /four pole structure lowering the same carefully by means of chain pulley block /Hydra / mobile crane as per site requirement and all other required T&P and re-installation after repairs complete all as specified and directed.

Replacement of burnt defective HT copper coil with new made of proper size copper wire (super enameled of high quality) matching with existing insulation etc for transformer 100KVA to 500 KVAcomplete all as specified and directed..

All as per item No 57 above but LT coil made of cooper wire (Super quality) matching with existing insulation etc complete all as specified and directed..

Replacement of U/S cracked/worn out synthetic rubberized cork gasket sheet 6mm thick for top cover of transformer of following capacity including nut bolt washers complete all as specified and directed.

Transformer 63KVA to 160 KVA

Transformer 200 KVA to 315 KVA

Transformer 400 KVA to 500 KVA

Transportation of each transformer at civil workshop if required for repairs and re transportation of the same back for installation after repairs including loading /unloading complete all as specified & directed.

Supply and fixing of Hylam sheet 12mm thick, make Hylam brand cut to required size including drilling of holes for fixing of nuts, bolts washers etc all as directed at size.

Repair to Air break gang operated switch segregation of serviceable and unserviceable spares/parts/components viz post insulator, fixed contact assembly moving contact assembly, flexible metallic strips etc and replacement of unserviceable spares/components assembly and assembling the complete air break switch unit carrying out fresh lubrication using lithium base grease/petroleum jelly, complete all as directed at site. Note:- New spares/components shall be measured and paid separately as supply only under respective item.

Supply only of metallic (brass, alloy) moving contact set single pole including fixing screwed nuts, and washers suitable for air break gang operated switch up to cap.400 Amp 3 pole 11000 volts grade.

Supply only metallic (brass, alloy) fixed contact set single pole including fixing screwed nuts, and washers suitable for air break gang operated switch up to cap.400 Amp 3 pole 11000 volts grade.

Supply only metallic (brass, alloy) MS jumper set single pole including fixing screwed nuts, and washers suitable for air break gang operated switch up to cap.400 Amp 3 pole 11000 volts grade.

Supply only post insulator with GI post for holding fixed/moving contact assembly including fixing arrangement suitable for Air break gang operated switch up to400 Amps 11000 volts.

Supply only tinned copper of flexible metal straps including fixing screws, nuts and washers all as directed suitable for Air break gang operated switch up to 400 Amps 11000 volts.

Supply only back connecter plate including fixing screws, nuts and washers all as directed suitable for Air break gang operated switch up to 400 Amps 11000 volts.

Replacement of burnt jumpers with new PVC insulated 11000 volt single core alum conductor cable of suitable PGI clamps nuts and bolts complete after taking down existing jumpers complete all as specified and directed.

S&F in replacement ACB 4 Pole,415 volt, with microprocessor release, adjustable release manual draw type of capacity 630 Amps,65 KA including testing & commissioning complete all as specified and directed.

S&F mild steel bolts, nuts, washers, of various sizes complete all as specified and directed.

M&L for earthing complete with galvanised steel earth plate electrode 60x60cmx6.3mm thick buried directly in ground ( earth pit not less than 2.25 Mtr deep below ground level ) with top edge of the plate not less than 1.5 Mtr below normal ground level, connected to galvanised from strip of 32x6mm earth lead by means of bolts, nuts, check nuts and washers of GI or steel all as shown in electrical plate No. 5 of SSR Part-I 1991 connected to earthing test point/transformer/panel all as specified or indicated and testing on completion as directed by the Engineer-in-Charge including necessary excavation & earth work in any type of soil, funnel, PCC chamber ( 1 : 3 : 6) type C1, RCC pit cover , charcoal, salt including provision of earth lead protected by 40mm dia light grade GI pipe and 20mm dia medium grade GI Pipe for watering complete. Note: (i) If the desired earth resistance is not found within permissible limit shall be redone by contractor at no extra cost. (ii) Cost of galvanised strip 32x6mm earth lead and 40mm dia light grade GI pipe and 20mm dia medium grade GI Pipe for watering up to 7.5 mtr is included in the rate quoted for this item

All as per item No 72 here in before but earth lead GI wire 4.00 mm. dia by means of bolts, Nuts, Check Nuts and washers of galvanized iron and thimbles and other ends of the earth wire connected to main switch board and protected by galvanized iron pipe light grade 15 mm. bore and water pipe 20 mm. bore GI light grade with funnel and wire mesh, complete all as shown in elect plate No. 5 of SSR part I of 1991.

Supply and Fixing Dead End clamp suitable for 50 sqmm messenger wire complete all as specified and directed

Supply and fixing of Horn gap fuse made out gun metal & solid copper wire suitable for 200 Amps 11000 Volts mounted on 06 insulators with GI steel frame etc complete including taking down of old unserviceable horn gap complete all as specified and directed.

S&F synthetic chequered rubber matting sheet suitable for 11000 volts of size 2m x 1m x 19mm thick Complete as per standed IS specification complete all as specified and directed.

Material and labour for fault detection in under ground HT cable of any size of type at any depth with fault locator including material T&P required for the same and testing complete all as specified and directed. Note :- 1. Joint, excavation laying only of cable shall be measured and paid separately. 2. Each fault shall be treated as one job and contractor have to address the said fault immediately.

KAPOOR ELECTRICALS

Garg Engineers

Mahamaya Engineers Services