REPAIR /MAINTENANCE TO TRANSFORMER, HT SWITCH GEAR, DEHYDTRATION OF TRANSFORMER OIL AND OTHER CONNECTED WORK AT AFS SAMBRA

Amount

Filtration of transformer oil of 11/33 KV transformers with streamline filtration plant in service connection and bringing the dielectric strength of the oil to required value as per IE rules and submitting necessary test report for record complete all as specified and as directed.

Note:- (a) The rate quoted shall be deemed to include for taking necessary connections to filtration plant from transformer and switch gear oil duly removing the inlet and out let connections.

(b) Electric supply for the filteration plant will be made available at free of cost.

(c) Before filtration of the transformer oil shall be tested for its dielectric strength and if the value became below 25 KV for distribution transformer & 50 KVA for power transformer only filtration to be carried out.

Supply and top up transformer cooling oil up to required level of transformer capacity 63 KVA to 2000 KVA pole/plinth mounted complete all as specified and as directed.

Inspecting, servicing, testing and calibration of 33 KV SF 6 / VCB Breaker with control relay Panel as recommended by OEM by deploying expert inspector cum engineer and helper of authorised associates of M/s Crompton Greaves Company (a) Properly clean the VCB with a CRC-226 & ensure proper lubrication in VCB (Electrical contact cleaner). (b) Removal of old grease & regreasing the same eith recommened frease. (c) Check condition of SIC contacts, alignment jaw contacts, proper tightening of hardware, proper closing of all poles together. (d) Check & adjust gap between hyleum sheet and side plate. (e) Check pressure of all circlips. (f) (i) Check IR between Phase-Phase (VCB closed condition) (ii) Phase-Earth (VCB closed condition) (iii) Phase-Earth (VCB in open condition) (g) Any faulty spares/parts to be replaced with new one.

Inspecting, servicing, testing and calibration of 11 KV SF 6 / VCB Breaker with control relay Panel as recommended by OEM by deploying expert inspector cum engineer and helper of authorised associates of M/s Crompton Greaves Company. (a) Properly clean the VCB with a CRC-226 & ensure proper lubrication in VCB (Electrical contact cleaner). (b) Removal of old grease & regreasing the same eith recommened frease. (c) Check condition of SIC contacts, alignment jaw contacts, proper tightening of hardware, proper closing of all poles together. (d) Check & adjust gap between hyleum sheet and side plate. (e) Check pressure of all circlips. (f) (i) Check IR between Phase-Phase (VCB closed condition) (ii) Phase-Earth (VCB closed condition) (iii) Phase-Earth (VCB in open condition) (g) Any faulty spares/parts to be replaced with new one.

Supply & fix in repair porcelain vitreous HT 11 KV bushings with brass studs suitable for out door distribution transformers of capacity 63 KVA-300 KVA after removing the old u/s studs/bushings and draining out the transformer oil from the top level up to conservator of the transformer and removing the top cover of the carefully and refixing and refilling the oil complete all as specified and as directed.

All same as per item No 5.00 here in before but LT bushings

Note for item No 5.00 & 6.00 : The transformer repair/servicing works shall be carried out only by engaging specialized and experienced technicians. The rate shall be included making necessary arrangements to remove the oil in the conservator in safe drums and refilling after the repair works.

Surface dressing in hard/dense soil /aggregate not exceeding 15cm deep and clearing all the grass weeds etc in the elevan No of sub station and including other E/M installations as directed after removing and spreading back the aggregate by doing twice a month upto the completion of CA in each sub station and E/M installation as directed by Engr-in-charge.

Material and labour for mild steel Cross arms, angles, bracings, supports, clams and back plates fabricated from structural steel sections including nuts, bolts, washers, welding, bending colt or hot, drilling holes for bolts, in any shape or size as indicated or directed and inclusive of one primer coat, one under coat and one finishing coat of paint including taking out the old U/S Cross arms, angles, bracings, supports, clamps and back plates complete all as specified and as directed.

Material and labour for fixing lightning arrester for out door use expulsion type with all fittings suitable for 11000 volts HT line transmission class of discharge capacity 65 KA including taking out the U/S lightening arrester complete all as specified and as directed.

Material and labour Pin type, porcelain, vitreous, white brow or green insulator including one galvanized mild steel spindle, two galvanized iron washers and one galvanized iron nut, 150mm height, 150mm dia for 11000 volts grade complete including taking out the U/S all as specified and as directed.

Supply and fix disc insulator, porcelain, vitreous 145mm high and 255mm dia ball and socket type, white, brown on green suitable for HT 11 KV complete including taking out the U/S all as specified and as directed.

Repairing/servicing to gang operating devices 11000 volts upto 400 Amps including greasing all the moving parts and applying white petroleum jelly at the contact point including dismantling and replacing all the un-serviceable parts/spares all as directed. NOTE: All the spares replaced will be measured and paid separately

Supply only moving contact blades copper for replacing under item No 12.00

Supply only Fixed contact jaw copper for replacing under item No 12.00

Supply only tinned copper flexible jumper for replacing under item No 12.00

Supply only MS Jumper carrier guide for replacing under item No 12.00

Supply only Back connecter plate for replacing under item No 12.00

Supply only PG clamp for replacing under item No 12.00

Material and labour for jumper connections (RYB) between GOD and drop out fuses and transformers with ACSR conductor 6/1x3.35 mm (rabbit) not exe. 2 mtrs all as specified and as directed

Material and labour for painting of four pole structure complete including chanels, GODs, cross arm, scraping the old painted surfaces, cleaning and painting with two coats of aluminium paint over a coat of red oxide primer for steel tubuler pole and cement colour for PCC pole upto 1.2 mtr height from top of copping and then 03 nos of each black and yellow alternate strip of 20 cm width upto GL/Copping complete including writing pole numbers all as specified and as directed.

Material and labour for painting of two pole structure complete, scraping the old painted surfaces, cleaning and painting with two coats of synthetic enamel paint of silver colour over a coat of red oxide primer for steel tubuler pole and cement paint for PCC pole upto 1.2 mtr height from top of copping and then 03 nos of each black and yellow alternate strip of 20 cm width upto GL complete all as specified and as directed.

Disconnecting and taking out old defective HT jointing kits of any size and type complete all as directed.

M & L heat shrinkable cable jointing kit for 11 KV earthed grade cable for out door termination complete with jointing materials and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 95 sqmm complete incl taking down the old burnt joint all as specified.Make:- Reychem/M-Seal/denson

M & L 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 sqmm to 95 sqmm.

All as per item No 17 above but straight through joint for size 120 sqmm to 185 sqmm

All as per item No 17 above but out door joint for 33 KV suitable for size upto 240 sqmm

Supply and laying, testing and commissioning on fixing or passing through pipes, cable XLPE insulated screened PVC bedded galvanised steel strip or wire armoured electric power cable (Heavy duty) with aluminium conductor 11 KV (E) volts grade screened of size 95 Sqmm 3 core.

Supply and fix HT RCC pole 11 mtr long 152x152 mm at top and 152x260 mm at bottom class 9 erecting in vertical position incl cement colour upto 1.2 mtr height from top of copping and then 03 nos of each black and yellow alternate strip of 20 cm width upto GL/Copping & including removing broken pole from site complete all as directed.

M & L stay assembly with complete accessories as shown in electrical plate No. 1 using 20 mm dia stay rod including taking down old stay assembly complete all as specified & directed (loop type isolator, stay clamps, excavation and concrete will be measured and paid separately)

M & L Galvanised iron stay strand of size 7/4.00 mm including taking down old stay strand complete all as specified & directed

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

M& L for providing cement concrete 1:3:6 type C-2 using 40 mm graded crushed stone aggregate as in foundation filling for poles complete all as specified and directed

M& L for providing cement concrete PCC 1:2:4 type B-1 using 20 mm graded crushed stone aggregate) as coping around poles etc complete including necessary formwork and finishing the exposed surfaces even and smooth without using extra cement all as specified and as directed.

Excavation in trenches for laying underground cables, poles and stays in hard/dense soil not exceeding 1.5M wide and not exceeding 1.5 M deep and getting out.

All as per item No 28 here-in-before but exceeding 1.5 m deep and not exceeding 3.0 m deep.

S & F of DWC Pipe IS-16205, outer dia 160 mm for cable protection in wall/under gorund laying of UG cables including SNAP-FIT Coupler and all fittings as required at site complete all as specified and as directed by Engr-in-Charge.

Returning filling in including spreading leveling watering and well ramming in layers not exceeding 25cms thick.

Removing surplus excavated material to a distance not exceeding 50 Mtr and depositing where directed at a level not exceeding 1.5 M above the starting point.

M&L for replacement of silica gel including disconnecting of silica gel from body of any capacity of transformer and refixing the same

M&L for PVC alkathene sleeving 15mm dia as per IS standard for Jumper connection on HT/LT poles heavy duty all as directed including removing old unservicable

Supply and fix in repairs switch air break gang operated, triple pole, mechanically operated, mounted on insulators & steel frame with operation mechanism worked from ground level for current rating 200 Amps, 11000 volts complete all as specified and as directed. Note- GOD shall be vertical type/horizental type which ever is suitable as per site requirement.

Supply & fix of drop out expulsion fuse single pole 11000 volts, above 25 Amps and upto 50 Amps complete including taking out old U/S one all as specified and as directed.

Material and labour for spray painting of power transformer of capacity 2MVA with two coats of synthetic enamel paint of smoke grey colour over a coat of red oxide primer after thoroughly preparing the surface complete all as specified and as directed.

Material and labour for spray painting of transformer upto 300 KVA capacity with two coats of synthetic enamel paint of smoke grey colour over a coat of red oxide primer after thoroughly preparing the surface complete all as specified and as directed.

M & L for painting of GOD cross arms and channel with clamps by scrapping rusted surface by applying one coat of aluminium paint including support GOD handle compelte all as directed

Supply only distilled water for lead acid battery of Main receiving station

M&L for repair of 3 phase battery charger suitable for charging 55 Nos 2V 100 AH battery by segregating old unservicable burnt out PCBs, internal wiring, MCBs etc including replacing them with new one, installed at 33 KV Main Receiving Station.

Cutting tree branches below, top and around the OH conductors not less than two metre around the line and keeping the line clearance through out the contract period by trimming the branches repeatedly as many times as required, depending on the growth of new branches including clearing the site by depositing the branches to a distance not exceeding 50 m all as directed by Engr-in-Charge.

M& L for Aluminum conductor, steel reinforced ( ACSR ) drawn / fixed on poles including aluminum binding wire for jumpering, dismantling old U/S conductor complete all as directed by Engr-in-Charge.

M & L for spreading 40 mm coarse graded aggregate (blue metal) in the substation yards at a thickness not exceeding 150 mm complete all as specified and as directed. Note:- Aggregate should be layed after scrapping of existing aggregate and levelled at various transformer yard as indicated.

Material and labour for Danger notice plate 1.6 mm thick mild steel vitreous enameled white with letters, figures and conventional skull and bones in signal red colour and fixed with MS clamps bolts and nut etc. complete of size 25 x 20 cm for HT 11000 volts complete all as specified and as directed incl. taking out old UNSV notice plate.

Disconnecting HT/LT Connection of 33/11 KV Power transformer 2.0 MVA capacity and identifying the leakage by visual inspection and other available technique and rectifying the leakage by welding/brazing etc after draining out transformer oil including refilling of transformer oil after dehydration complete including testing and commissioning complete all as specified and directed by Engr-in-Charge. Note- Contractor shall responsible for:- (i) Arranging the drum for storing Transformer oil. (ii) Any damage during leakage arrest. (iii) Refilling the existing transformer oil after filtration to remove moisture carbon particle and to achieve dielectric strength of oil minimum up to 60 KV. (iv) Testing of transformer oil and the payment will be made under the relvant item.

Supply & laying insulated synthetic rubber mat of sufficient thickness confirming to IS : 15652-2006 ISI marked suitable upto 33 KV each mat shall be of size 1 x 2 M complete all as specified and directed by Engr-in-Charge.

Overhauling and Servicing of OLTC unit for HT transformer of capacity 33KV/11KV, 2 MVA comprising of the following:- [a] Servicing of all mechanical gear wheels and moving parts, latches and releasing parts, over driven stopping and restarting mechanism complete [b] Cleaning of complete OLTC control chamber and fault finding and rectification [c] Repairing to control wiring, replacement of burnt wires, lugs, etc [d] Lubricating, greasing of all mechanical parts [e] Servicing to electrical auxillary contactors and limit switches and HRC fuses complete

Painting of old painted surface of chain link fencing of mesh size 50 x 50 mm by scrapping rusted surface by applying one coat of aluminium paint inside and out side of 33 KV yard & other sub station including cement paint of cement pillar compelete all as directed

Material and labour for spray painting of CT - 12 Nos and PT - 06 Nos with two coats of synthetic enamel paint of smoke grey colour over a coat of red oxide primer after thoroughly preparing the surface in 33 KV Yard complete all as specified and as directed.

M & L Galvanised Iron pipes 80 mm dia, light grade with all fitting and fixed to poles/route/drains, ceillings or laid in floors complete all as specified and as directed.

Cutting the tar macadam road / hard standings for laying cable and excavating not exe. 1.5 wide and 1.5m in depth and getting out all as directed including filing back and finishing it with PCC complete matching with the surroundings.

M & L for HT Cable route indicator with a welded/riveted disc of 4 inch dia and engraved with cable with cable route marker made out of angle iron 40 x 40 x4 mm thick dug in ground with in and incl PCC 1:3:6 type C1 using 20mm graded aggregate at approx distance 100 mtr including necessary earth work complete all as specified and directed by Engr-in-Charge.

Overhauling and servicing of CT- 12 Nos and PT - 06 Nos for HT transformer of capacity 33 KV /11KV all as specifiied and directed. Note: Quoted rate is deemed to be included the cost of necessary spare parts

S & F in repair loop type insulator, vitreous porcelain, white, brown or green large size, with overall dimensions 90mm x 140mm, clearance of hole 25.5mm all as specified & directed.

ASHIRWAD ELECTRICALS

M/s. VIJAY ELECTRICALS

M/S Bhagyawanticonstruction

Aavani BUILDERS AND CONTRACTORS