CWE/AF AMB/SAR-16/2022-23 REPAIR /MAINTENANCE TO HT OH UG LINES, UG CABLES, TRANSFORMERS AND OTHER CONNECTED ITEMS AT DOMESTIC AND TECHNICAL AREA AT AFS SARSAWA UNDER GE (AF) SARSAWA

Amount

Disconnecting HT/LT cables & Earthing connections of burnt /defective transformer of capacity 50KVA to 630KVA, 11KV/433 volts, 3 phase, from pole/floor mounted, taking down from site of installation carefuly with the help of cranes and transporting the same to workshop for repair, opening, draining out transformer oil, dismantling complete & taking out core assembly & removing burntout windings, cleaning /washing of tank removing the dirt sludge and sticky materials from all parts of the transformer including core tank and cooling tubes, removal of damaged parts, dehydrating the core assembly, re-assembling after replacement of damaged parts of the transformer after repairs, making connections and filling dehydradated/fresh transformer oil and testing for all type of tests(routine test & full load test) including transportation back & reinstallation/connection of transformer at site complete all as specified & directed.. Notes:- (i) Spare parts shall be measured and paid seperately. However taking down/out of old spare parts are included in quoted rates if specifically not otherwise specified. (ii) All parts/components replaced shall be identical to those specified by original manufacturer. (iii) Winding, new transformer oil & dehydration of old transformer oil shall be measured & paid separately. (iv) A Board of Officers shall be appointed by the Accepting Officer for ascertaining the repair work required in transformer and all inventory shall be prepared in presence of Engineer-in-charge & Contractor.

M&L winding of transformer any capcity at LT side with copper strip of suitable size / gauge, fixing the coil in the position in core assembly and making connection as per original pattern including providing insulation, complete all as specified & directed. Note: The quantity of winding shall be assesed by BOO.

M&L winding of transformer any capcity at HT side with super enamelled copper wire of suitable size / gauge, fixing the coil in the position in core assembly and making connection as per original pattern including providing insulation, complete all as specified & directed. Note: The quantity of winding shall be assesed by BOO.

S&F Tap changer switch suitable for transformer 50KVA to 200KVA complete all as specified & directed.

S&F Tap changer switch suitable for transformer 250KVA to 630KVA complete all as specified & directed.

M&L oil temperature gauge /thermometer suitable for transformers of any make, model , location etc with shape and size as existing at site complete all as specified & directed.

S&F HT bush assembly made out of brass with heavy duty brass complete with brass spindle, nuts, bolts, washers etc without bushing insulators all as per existing size, shape and length suitable for 50KVA to 63 KVA capacity transformers complete all as specified & directed..

Description all as per BOQ item No. 7.00 here-in-above but for 100 KVA to 200 KVA capacity transformers.

Description all as per BOQ item No. 7.00 here-in-above but for 250 KVA to 630 KVA capacity transformers.

S&F LT bush assembly made out of brass with heavy duty brass complete with brass spindle, nuts, bolts, washers etc without bushing insulators all as per existing size, shape and length suitable for 50KVA to 63 KVA capacity transformers complete all as specified & directed.

Description all as per BOQ item No. 10.00 here-in-above but for 100 KVA to 200 KVA capacity transformers.

Description all as per BOQ item No. 10.00 here-in-above but for 250 KVA to 630 KVA capacity transformers.

S&F 11 KV porcelain bushing insulators for HT side, outdoor/indoor type transformer of capacity 50KVA to 63KVA as per IS-2099 of 1973 complete all as specified & directed..

Description all as per BOQ item No. 13.00 here-in-above but transformer of capacity 100KVA to 200KVA

Description all as per BOQ item No. 13.00 here-in-above but transformer of capacity 250KVA to 630KVA

S&F 433 volt porcelain bushing insulators for LT side, outdoor/indoor type transformer of capacity 50KVA to 63KVA complete all as specified & directed..

Description all as per BOQ item No. 16.00 here-in-above but transformer of capacity 100KVA to 200KVA

Description all as per BOQ item No. 16.00 here-in-above but transformer of capacity 250KVA to 630KVA

S&F cork sheet gasket, 6 mm thick, superior quality, on top cover plate of the transformer 50KVA to 630 KVA complete all as specified & directed.

S&F in replacement gun metal globe or gate valve 20/25 mm bore, ISI marked, class-2 with spindle and iron wheel head, screwed both ends for iron pipe with & including fittings and fixtures complete all as specified & directed.

Taking down/out old unservieable air break gang operated switch, removing GOD including supply and installing Switch Air break gang operated, triple pole, for horizontal or vertical operation, mechanically operated, mounted on 12 insulators and steel frame with operating mechanism & operating rod of 25mm bore, medium grade GI pipe from ground level with locking arrangements, 200 Amps rating 11000 volts working pressure including making electrical connections to make it functional after testing complete all as specified & directed.

S&F in replacement HT/LT side cable box cover plate made out of MS sheet of 16 SWG complete with nuts, bolts, washers, gasket & painting suitable for indoor/outdoor type transformer of capacity 50KVA to 630KVA complete all as specified & directed..

Taking out breather assembly from the transformer of any make, capacity 50KVA to 63 KVA, removing of moisturized/unserviceable silica gel with and including supply of new breather assembly and pouring of silica gel with fresh deep blue coloured silica gel all as per existing at site complete all as specified & directed..

Description all as per BOQ item No. 23.00 here-in-above but capacity 100KVA to 200KVA

Description all as per BOQ item No. 23.00 here-in-above but capacity 250KVA to 630KVA

Disconnecting of all HT/LT cable & earthing connections of transformer of capacity 50KVA to 63KVA , 11KV/433volt, 3 phase, any make, from pole/floor with the help of crane to carryout overhauling of transformer comprising of following services complete all as specified & directed:- (i) Opening of top cover, disconnecting winding connection from bushing and taking out carefully core assembly complete with winding (ii) Draining out of transformer oil from chamber (iii) Checking compactness of core & tightening the same wherever required (iv) Chemical washing of winding to remove dirt, dust & carbon particles. (v) Cleaning of oil tank to revmove oil sludge followed by painting inner surface of tank with zinc chromate base paint (vi) Refixing of core & winding assembley and making connection with HT/LT bushing (vii) Replacement of worn out gaskets nut/bolts with new one. (viii) Refilling the transformer oil after filtering/dehyderation or filling new transformer oil. (ix) Satisfactory testing of transformer on full load. Note: The new transformer oil & dehydration of transformer oil shall be measured & paid sepratrly.

Description all as per BOQ item No. 26.00 here-in-above but transformer of capacity 100KVA to 200KVA

Description all as per BOQ item No. 26.00 here-in-above but transformer of capacity 250KVA to 630KVA

Dehydration/centrifuging transformer oil by means Ultra High Vaccum double stage machine to remove impurities from oil such as moisture, dirt, air and other gases at site of installation in running condition of transformer including testing the oil before and after centrifuging from top and bottom of transformer to achieve the BDV value more than 45KV(rms) at 2.5mm air gap complete all as specified & directed.. Note:- (i) Oil Test value record register shall be prepared in presence of Engineer-in-charge/JE and handed over the register to sub division on completion of work. (ii) The contractor is required to submit the di-electric repot after dehydration and filtration of each transformer before claiming payment.

Supply only transformer oil of dielectric strength not less than 60 BDV to comply IS-335 of 1993 complete all as specified & directed. Note:- (i) Empty container shall become Govt property & shall be taken on charge throrugh receipt voucher. (ii) Oil Test value record register shall be prepared in presence of Engineer-in-charge/JE and handed over the register to sub division on completion of work. (ii) The contractor is required to submit the di-electric repot of each transformer before claiming payment.

Preparation of external surfaces of transformer of capacity 50KVA to 200 KVA for painting including fins/radiators, removal of all rust/oil/grease and unwanted material and applying two coats of synthetic enamel metallic paint, smoke grey, by means of spray gun at site of installation of transformer including writing SM/MES number, capacity of transformer etc with black synthetic enamel paint complete all as specified & directed.

Description all as per BOQ item No. 31.00 here-in-above but transformer of capacity 250KVA to 315KVA.

Description all as per BOQ item No. 31.00 here-in-above but transformer of capacity 400KVA to 630KVA.

Cleaning and preparation of surfaces of HT steel tubular poles with emery paper, filling the voids with suitable filler materials and applying two coats of aluminium paint over & including one coat of zinc oxide primer to poles, cross arms, brackets, hooks, junction box, stay clamps with and including making blue & white strip 30cm wide (5 Nos) upto 1.5 mtr from PCC coping and marking the numbering on poles with synthetic enamel paint complete all as specified & directed.

Cleaning and preparation of surfaces of HT PCC poles with emery paper, filling the voids with suitable filler materials and applying two coats of exterior cement base paint over & including one coat of primer to poles and applying two coats of aluminium paint over & including one coat of red oxide primer to cross arms, brackets, hooks, junction box, stay clamps, and making blue & white strip 30cm wide (5 Nos) upto 1.5 mtr from PCC coping and marking the numbering on poles with synthetic enamel paint complete all as specified & directed.

Cleaning and preparation of surfaces of angle iron by emmery paper and applying two coats of synthetic enamel paint over & including one coat of zinc oxide primer to angle iron and two coats of aluminium paint to chain link fencing around the transformer yards with and including applying two coats of exterior cement base paint to external surfaces of transformer's platform including stairs etc complete all as specified & directed..

Cleaning and prepartion all metal parts of 33/11 KV main receiving station and applying two coats of aluminium paint over & including one coat of zinc oxide primer including painting to CT's/GODs, chain link fencing,angle iron posts around the transformer yards with and including two coats of exterior cement base paint to external surfaces of transformer's platform including fire walls etc complete all as specified & directed..

Supply, laying, jointing, testing and commissioning in replacement HT XLPE cable (heavy duty), 11000 volts (earthed), cross sectional area 95 Sqmm, 3 core, insulated, screened, sound compacted aluminium conductor, screening with extruded semi conducting layers, insulation screening with copper tape covers laid up with PVC (ST-2), extruded inner sheathed GI strip armoured PVC (ST-2) out sheathed, ISI marked with IS-7098 Part II with amendment, laid in trenches /pipes /ducts /along poles/ walls/ equipment etc complete all as specified & directed.. Notes:- (i) Cable shall be of manufacturing date not earlier than Mar 2022. All the cable shall be embossed with year of manufacturing, meterage at every metre, in addition to its own standard markings as per IS i.e. Size, voltage etc. (ii) Excavation & earth work, sand cushioning, protection pipes, end termination joints & protection covers shall be measured and paid separately. (iii) No straight through joint shall be permitted in less than single drum length. (iv) The contractor shall produce original purchase vouchers duly machine numbered alongwith excise duty gate pass of factory for verification and record. (v) Cable shall be tested by the GE or represntative of GE after laying in the trenches & before returning filling in the trenches.

Excavation in trenches not exceeding 1.5mtr wide and not exceeding 1.5mtr in depth for foundation etc or for walls, shafts, manholes not exceeding 10 sqm on plan or for laying pipes/cables etc and getting out, in any type of soil complete all as specified & directed.

Excavation in trenches not exceeding 1.5mtr wide and exceeding 1.5mtr but not exceeding 3.0mtr in depth for foundation etc or for walls, shafts, manholes not exceeding 10 sqm on plan or for laying pipes/cables etc and getting out, in any type of soil complete all as specified & directed.

Returning filling in including spreading leveling watering and well ramming in layers not exceeding 25 cm thick each in any type of soil complete all as specified and as directed.

Removal of excavated soil to a distance not exceeding 50 mtr & depositing where directed at a level not exceeding 1.5 mtr above the starting point complete all as specified & directed..

M&L un-reinforced precast concrete cable cover, Class HV type-1, flat, size 300mm x 180mm x 40mm, laid flat for protection of cable, adjacent to each other, perpendicular to central axis of cable complete all as specified & directed.

M&L Sand cushioning with fine dry sand to cable with a layer of sand 8 cm thick before laying the cable and 15 cm thick after laying the cable (punned down to 18 cm thick after laying and stretching of cable) complete all as specified & directed.

M&L taking out existing HT cable of size 95/120sqmm from excavated trench and relaying of same cable in new excavated trench after taking down proper shut down complete all as specified & directed. Note: The excavation & earthwork shall be mesured & paid separately.

S&F cable route indicator, showing 'MES HT' under ground cable" and arrow mark painted with two coat synthetic enamel paint over & including one coat of zinc oxide primer, made out of MS plate of size 200mm x 200mm, 6mm thick fixed on MS flat of size 25mm x 4mm, 600mm long, including cutting, chasing, drilling, welding etc.(whichever required) and embedded in PCC block 1:3:6, type C-2 of size 30cm x 30cm x 30cm in the ground including excavation and earth work complete all as specified & directed. Note: Excavation & earthwork and PCC work included in quoted rates.

M&L in replacement double wall corrugated (DWC) HDPE pipe outer dia 90mm & inner dia 75mm as per IS 14930(part-2):2001 with end cap as in trenches, under road, under floor, fixed to wall with fixing arrangement with suitable size of MS clamps made from 40x3 mm size flat iron including nuts,bolts & washers or along the pole with fixing arrangement etc for cable protection complete all as specified & directed. .

S&F in replacement cable jointing kit for 11000 volt earthed grade, straight through, end termination heat shrinkable type joints with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 95sqmm complete all as specified & directed..

S&F in replacement cable jointing kit for 11000 volt earthed grade, outdoor type, end termination heat shrinkable type joints with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 50sqmm to 95sqmm complete all as specified & directed..

S&F in replacement cable jointing kit for 11000 volt earthed grade, indoor type, end termination heat shrinkable type joints with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 50sqmm to 95sqmm complete all as specified & directed..

Cutting the worn out/unserviceable lugs from the cables upto 50 Sqmm size with and including supply & fixing lugs after cutting the worn out /faulty cable end from HT/LT side of transformer /LT pillar/panel box including necessary earth work for taking out the cable from loop, returning filling etc and providing aluminium lugs lead including crimping with crimping tools in the existing LT cable and making necessary connections to make it functional complete all as specified & directed.

Description all as per BOQ item No. 51.00 here-in-above but cables of size 70 Sqmm to 120 Sqmm.

Description all as per BOQ item No. 51.00 here-in-above but cables of size 150 Sqmm to 185 Sqmm

Description all as per BOQ item No. 51.00 here-in-above but cables of size 240 Sqmm to 300 Sqmm

S&F composite polymer 11 KV, pin insulator alongwith pin 260 mm long creepage distance 320 mm PF dry/wet withstand voltage KV/mint 65/40 after taking down/out insulator as existing at site complete all as specified & directed..

S&F pin type insulator capacity 33000volt after taking down/out insulator as existing at site complete all as specified & directed..

S&F post type insulator capacity 33000 volt after taking down/out insulator as existing at site complete all as specified & directed..

S&F in replacement HT lightning arresters for outdoor use, non-liner resistor type, horn gap and choking coil, maximum working pressure 11000 volts, transmission class, discharge capacity 65 Kiloampere complete all as specified & directed..

S&F lightening arrestor HT 33 KV, 10 KA(Set of three), station class after taking down/out arrestor as existing at site complete all as specified & directed..

M&L defect rectificatoin of HT 11 KV cable laid in trenches by locating fault with the help of electronic fault locating machine comprising of surge generator pulse, cable route tracer, ECHO fault locator with hight frequency distance calculator etc including and additional excavation in normal alluvial strata required for exposing the cable fault, removal of deteriorated potion of cable, treating of cable and keeping the same ready for jointing work for cable of size up to 185 Sqmm 3 core complete all as specified & directed. Note: The fault locating equipments will be brought to site within 24 hours of instruction from Engineer-in-Charge. S&F of Cable joints shall be measured & paid seperately.

S&F in replacement 33KV, 10 to 25 Amp, DO fuse complete all as specified & directed.

S&F in replacement 33 KV, 30 Amp, DO fuse complete all as specified & directed..

S&F in replacement 33 KV, 40 Amp, DO fuse complete all as specified & directed..

S&F in replacement 11KV, 10 to 25 Amp, DO fuse complete all as specified & directed.

S&F in replacement 11KV, 30 Amp, DO fuse complete all as specified & directed..

S&F in replacement 11KV, 40 Amp, DO fuse complete all as specified & directed..

M&L in replacement true vertical steel tubular, swaged welded pole conforming to IS-2713 part II , type 410 SP 55, 11 metre long complete with mild steel base plate of 6 mm thick of size 300mm X 300mm, finial taper plug, cap, bolts, nuts, washer and screws hole of required size and Nos. for fixing cross arms including painting externally with two coats of aluminium paint over & including one coat of zinc oxide primer for exposed surface and two coats of black bituminious paint for embeded portion in concrete as well as throughout internally including provision of white & blue colour strips with fluorescent paint upto 1.5 mtr height & nubmering of pole complete all as specified & directed.. Note:- Excavation, earth work and PCC shall be measured and paid separately.

M&L for PCC 1:4:8, type D-2 using 40 mm graded mechanically crushed stone aggregates as in foundations, filling and mass concrete etc complete all as specified & directed.

M&L PCC 1:3:6, type C-2, using 40 mm graded mechanically crushed stone aggregates as in foundations, filling and mass concrete etc complete all as specified & directed.

M&L PCC 1:2:4, type B-1, using 20 mm graded mechanically crushed stone aggregates as in coping to pole/stay/panel etc including necessary formwork to exposed surface finished even & smooth complete all as specified & directed.

S&F ACSR conductor,steel reinforced,Weasel, Beaver, Ferret, Mink including stretching on insulators with aluminium taps, jumping, binding on poles with minimum sag including binding wire, jointing sleeves, and PG clamps of suitable size after taking down/out conductor as existing at site complete all as specified & directed.. Notes :- The rates quoted includes (i) Jumper on cutout point,2 pole/4 pole structure shall be provided with PVC sleeves . (ii) Cutting of branches of trees coming across the OH line.

Supply and laying GI steel earth wire 4 mm dia on existing Steel/PCC poles including binding on insulators with aluminium tap, jumpering etc after taking down/out wire as existing at site complete all as specified and as directed.

S&F cross arms, bracings, supports,clamps and back plates fabricated from structural steel sections including nuts, bolts, washers, welding, bending cold or hot, drilling holes for bolts, in any shape or size as indicated or directed and applying two coats of aluminium paint over & including one coat of zinc oxide primer after dismantling of old unserviceable cross arm as existing complete all as specified & directed..

S&F anti climbing device ,spikes type fabricated out of MS bars ,round square and flat with and including providing required nuts ,bolts,washers etc., welding in two halves, made to shape, to suit the cross section of the pole and applying two coats of aluminium paint over & including one coat of zinc oxide after dismantling of old unserviceable climbing device as existing complete all as specified & directed..

M&L in replacement danger notice plate of 1.6 mm thick mild steel sheet,vitreous enamelled white,with letters , figures and conventional skull and bones in signal red colour, fixed with MS clamps ,bolts and nuts, for HT of 25 cm x 20 cm size as per SSR Part-I 2009 complete all as specified & directed..

Servicing and repairing of VCB's of capacity 630/ 400 amps from the OEM, replacing unserviceable spare parts ,check all contacts are tight, clean , lubricate the mechanism including calibration by authorised technician and other friction points,lubricating spring guides,guide bolts (use light oil or lithium grease), checking the trip/closing coil plunger moving freely,isolating contacts and other current carrying parts are in normal condition,tightness of all the current carrying parts particularly the bus bars inside the panel,clean the insulator surfaces,check for any signs of over heating complete all as specified and directed. Notes:- (i) Spare parts shall be measured and paid separately. (ii) After completion of work necessary service report shall be submitted by the contractor to Engineer-in-charge. (iii) The servicing shall be done through rep of OEM.

Taking out old unserviceable motor from VCB, 11 KV by isolating the incoming HT supply,removing motor from the site including S&F motor for VCB, 11 KV as per existing size,rating etc complete all as specified and directed.

S&F in replacement of T & C switch as existing for VCB 11 KV complete all as specified and directed.

S&F in replacement three phase Amp meter ranging from 0-100 Amps digital type complete all as specified & directed..

S&F in replacement three phase Voltmeter ranging from 0-15 KV digital type complete all as specified & directed..

S&F in replacement LED indicator lamps set (RED / YELLOW / BLUE)(Set of three) complete all as specified & directed.

S&F in replacement cast resin CTs ratio 60-30/ 5 A +5,class I, 26.3 kA, type ECTT 3, (Set of three) for out going feeders complete all as specified directed.

S&F in replacement cast resin CTs ratio 100-50/ 5 A +5 class I, 26.3 KA, type ECTT 3 (Set of three) for out going feeders complete all as specified & directed..

S&F in replacement reverse motor for VCB capacity, 630/400 Amps,150 watt,230 Volts, type PM R5 complete all as specified & directed.

S&F in replacement 11 KV, single phase, indoor resin cast, PT of ratio 11 KV/rt 3/110V/rt 3/110V/rt 3, Class 0.5-3, Burden 50 VA - 50 VA, insulation level 28/75 KV, voltage factor 1.2 Cont and 1.9 for 30 Sec, (Set of three) conforming to IS-3156 complete all as specified & directed.

S&F 3 phase over current and earth fault relay with instantanteous high set functions after taking down/out relay as existing at site complete all as specified & directed.. Make: L&T Model No MC61A-nX or equivalent in Legrand and Crompton Greaves.

Labour for augering upto 100mm bore for road crossing 3 mtr to 10 mtr(in length) not exceeding 1.5 mtr in depth for laying of electric cable and GI tubing in soft/loose soil complete all as specified.

Supply, installation, testing & commisioning in replacement outdoor type feeder pillar box suitable for 11 KV, made out of 3.15mm thick MS sheet, powder coated, dust and vermin proof with rain water protection, double door type with locking arrangements of size 1.2mtr X 1.2mtr X 0.6mtr (minimum) with provision of HT 11 KV post insulators. 3 Nos fixed inside with suitable size of copper busbars for cable connections and danger notice plate, panel to be fixed at 45cm above ground level on brick masonry plateform including 75mm thick PCC (1.3.6), type C1 (using 20 mm graded stone aggregates) around the area upto 1.5mtr in all directions from the panel, cable joints inside the panel provided with suitable insulators and copper bus bars complete all as specified & directed.

For Credit Schedule refer tender documents. The amount of credit schedule shall be deducted in total quoted amount of BOQ to arrive contract sum.

ISHWAR ELECTRICALS AND PROCESS SERVICES

Sharma Electrical and Engineering Works

SHRI RAM ENTERPRISES