CWE/FZR- /2022-23 Repair/replacement and maint of Transformer and HT external electric supply and HT UG cable at Baddowal and Moga under GE Ludhiana.

Amount

Opening of all electrical connection HT/LT from the bushings/terminal box of the unserviceable distribution transformer of indoor/outdoor type from existing position i.e. two pole structure or PCC foundation of capacity 63 to 160 KVA, of any make and specification for repair, transporting the transformer to repair workshop(upto 100 KM), opening of top cover including conservator, breather and allied items, inspecting the same to assess the repairs required,carryout the repairs. Cleaning, greasing and overhauling including taking out and replacement of unserviceable/worn out parts with new parts, fixing parts by draining out transformer oil complete all as required to make the transformer serviceable. Refilling dehydration of transformer oil after reassembling after repairs, bringing back to the location where the transformer was installed, fixing in original position, connecting all electrical/mechanical connection and testing and commissioning on load as per capacity complete all as specified and as directed.

All as per Serial item No 1 here-in-before but transformers of capacity 200 KVA to 400 KVA. Notes for item No 1 & 2:- New Transformer oil required for Topping up shall be measured and paid seperately.

Taking out of burnt HT/LT Primary / secondary winding from the unserviceable transformer of any capacity. cleaning all the limbs, rewinding with super enamelled copper wire of same specification of HT/LT winding with existing suitable gauge by calculating numbers of turns as per voltage of transformer complete, varnishing and drying by vaccum impregnating, replacing insulating material gasket with nut bolt etc and testing as per latest IS/BS specification complete all as specified and directed.

Supplying and filling transformer oil ISI marked in sealed drum for transformers, confirming to IS-335 with dielectric strength of 50 KV complete all as specified and directed.

Dehydration of transformer oil on site with dehydrator machine to achieve, the required dielectric strength not less than 45 KV,the test result of dielectric strength to each transformer shall be submitted by the contractor to Engr-in-Charge in writing before claiming any payment .

S & F in replacement of, LT 415 Volt bushing porcelein vitreous 1100 volt grade as per IS 3347 (ISI marked) for transformer capacity upto 400 KVA complete all as specified and directed.

S & F in replacement of LT 415 volt threaded brass bushing rod as per existing dia and length with nuts, check nuts and washers ISI marked for transformer capacity 63 to 160 KVA complete all as specified and as directed.

S & F in replacement of LT 415 volt threaded brass bushing rod as per existing dia and length with nuts, check nuts and washers for transformer capacity 200 KVA to 400 KVA ISI marked complete all as specified and as directed.

S & F in replacement of HT threaded brass bushing rod as per existing dia and length with nuts, check nuts and washers for transformer capacity 63 to 160 KVA ISI marked complete all as specified and as directed.

S & F in replacement of HT threaded brass bushing rod as per existing dia and length with nuts, check nuts and washers for transformer capacity 200 KVA to 400 KVA ISI marked complete all as specified and as directed.

S & F in replacement of cork sheet for top cover of transformer 63 to 400 KVA capacity complete all as specified and as directed.

S&F breather assembly consute with silica gel ISI marked as per existing sample in sealed container for transformer capacity upto 400 KVA complete all as specified and directed.

S&F for heat shrinkable straight through joint suitable for 11000 volts XLPE cable aluminium conductor of size 95 sqmm 3 core complete all as specified and as directed.

S&F for jointing and testing HT outdoor type (heat shrinkable) cable end termination joint suitable for HT cable 11000 volts XLPE aluminium conductor cable grade 95 Sqmm 3 core complete all as specified and as directed.

S&F for jointing and testing HT indoor type (heat shrinkable) cable end termination joint suitable for HT cable 11000 volts XLPE aluminium conductor cable grade 95 Sqmm 3 core complete all as specified and as directed.

Dismantling of existing unserviceable cross arms of MS channel or angle sections etc. and in any position complete all as specified and directed.

S&F in replacement for cross arm bracing, support, clamps and back plates fabricated from structural steel sections including nut bolts washers welding, bending cold or hot, drilled holes for bolts in any shape or size as indicated or directed and inclusive of one coat of primer, one undercoat and one finishing coat of paint complete all as specified and directed.

S&F in replacement switch air break gang operated tripple pole 11000 volt 400 amps mechanically operated, mounted on HT insulators 12 Nos and MS galvanized frame with operating rod of 25 mm bore medium grade GI pipe worked from ground level with locking arrangement for current rating with 12 insulator with drop out expulsion type fuse complete with nuts, bolts and washers etc as required including one coat of aluminium paint over a coat of red oxide primer complete all as specified and directed.

S&F in replacement Lightning arresters Gapless Metal oxide type consisting of Zinc Oxide varistors, FRP core and silicone housing complete with all fitting transmission class discharge capacity 65 kilo amps 11000 volts complete all as specified and directed.

S&F in replacement expulsion fuse single pole (drop out fuse) mounted on insulator & steel frame upto 25 Amps for 11000 V grade. complete all as specified and directed.

Dismantling of unserviceable worn out/weathered/ damaged ACSR conductor, service feeder of any size from pole after disconnecting of jumpers and insulator bindings complete all as specified and directed.

M&L ACSR conductor of any size including all binding wires for shackle type insulators and aluminium jointing, jumpering etc on HT lines complete all as specified and directed

Material and labour for pin type, porcelain, vitreous, white, brown or green insulator of size 150 mm height, 150 mm dia, including one galvanized mild steel spindle, two galvanized iron washers and one galvanized iron nut for 11000 volts grade complete all as specified as directed.

Material and labour for disc type insulator , porcelain vitreous, 145mm high and 255 mm dia ball and socket type, white or green, single disc assembly for tension with tension clamps for conductors, working pressure 11000 volts. complete all as specified and directed.

S&F GI pipe light grade 80 mm dia for protection of cables. complete all as specified and directed.

Boring of holes under road, pavement, hard standing by trenchless technique and necessary T&P with 100 mm dia of road for passing of LT/HT cables complete all as specified and directed.

Taking down of existing damaged XLPE cable any size/type with bricks complete all as specified and directed.

Supplying, laying, jointing, testing and commissioning HT XLPE cable, 11000 volts (earthed), 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, size 95 Sqmm, 3 core , laid in trenches /pipes /ducts /along poles/ walls/ equipment etc including taking down of old cables complete all as specified and directed. NOTES : (i) Excavation & earth work, sand cushioning, protection pipes, end termination joints & protection covers shall be measured and paid separately.

M & L for painting to existing feeder piller box with two coats of smoke grey enameled paint over one coat of red oxide primer including removing of old paint scratching and perparing the suface complete all as specified and as directed.

M & L for painting to existing transformer on PCC/steel two/four pole & PCC plateform of capacity 63 to 100 KVA with two coats of smoke grey enameled paint over one coat of red oxide primer including removing of old paint by scratching complete all as specified and as directed.

All as per Serial item No 30 here-in-before but for capacity 125 to 200 KVA.

All as per Serial item No 30 here-in-before but for capacity 400 KVA.

Excavation in trenches in soft or loose soil, not exceeding 1.5 metre deep and not exceeding 1.5 metre wide and getting out complete all as specified and directed.

Returning, filling in trenches including spreading, leveling, watering and well ramming in layers not exc 25 cm thick in soft/loose soil complete all as specified and as directed.

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

Material & labour for sand cushioning in trenches and well ramming in layers for cable cushioning with fine dry sand and complete all as specified and directed.Notes-:(i) Excavation and earth work to be measured and paid for separately. (ii)Thickness of 18cms after punning shall be considered for payment.

M & L for precast concrete cable cover class HV type 1 peak size 300mmx 180mm and thickness 40mm laid flat, dry and adjacent to each other, perpendicular to the central axis of the cable in trenches, complete all as specified & directed.

M&L Earthing complete incl with earth work with galvanised steel earth plate electrode 60cmx60cm, 6.0 mm thick buried directly in ground vertically at a depth not less than 2.25 metres below normal ground level with top edge of the plate at a depth not less than 1.5 metres below normal ground level, connected with and including GI strip 32mm x 6mm with & including GI pipe 50mm bore medium grade as protection pipe (upto the body of equipment max 7.50metre) by means of GI bolts, nuts, check nuts and washers of GI and thimbles, earth plate surrounded by packed layers of coal dust and common salt 15cm thick, all around top and bottom and watering pipe 20mm bore of GI pipe light grade with funnel and wire mesh complete all as shown in Electrical plate No. 3 of SSR Part-I (2009), testing on completion including PCC chamber (1:3:6) using 20mm graded stone aggregate and RCC (1:2:4) type B-1 cover and angle iron frame complete all as specified.

Disconnecting of HT connections and DC connections from existing bus bar and draw out trolley including servicing of complete parts of VCB, cleaning with carbon tetra chloride, lubrication of mechanical parts,checking of DC to control wiring with single core copper conductors of existing size as required at site of VCB of any type, any make for satisfactory running and replacement of defective spare parts, applying one coat of HT insulation on busbar, spouts and other connected parts and reassembling the same re-connecting all HT & AC / DC connections complete in functional order including testing on existing load complete all as specified and directed. Note: Spare parts shall be measured and paid for separately under respective items of this schedule as S & F in replacement of (in replacement) minor parts required at site are deemed to be included in the cost quoted by the contractor

S & F in replacement of spring charging single phase electric motor AC to operate the VCB trolley as per existing electric perimeter sample complete all as specified and directed.

S & F in replacement of motor cut off switch for spring charging motor of VCB trolley as per existing sample complete all as specified and directed.

S & F in replacement of current transformer(CT) moulded in epoxy compound with dual ratio 50 - 25/5+5 Amps as per existing CT complete including connection with copper wire 2.5 Sqmm with replacement existing deroted beading of VCB body at power house complete all as specified and directed.

S & F in replacement of current transformer(CT) moulded in epoxy compound with dual ratio T1-T3 100-50/5 Amp 10/1.0 as per existing CT complete including connection with copper wire 2.5 Sqmm and beading of VCB body at power house complete all as specified and directed.

S & F in replacement of HRC fuse base with HRC fuse 20A, 415V, 80 KA complete all as specified and directed

S & F in replacement of Multifunction meter for 11 KV VCB shown the all electrical perimeter as per existing sample complete all as specified and directed.

S & F in replacement of LED with coloured screw cup Indicator lamps as per existing colour code for 11 KV VCB complete all as specified and directed.

S & F in replacement of switch (trip circuit healthy) of VCB complete all as specified and directed.

S & F in replacement of Air break (aux) contactor relay of VCB complete all as specified and directed .

S & F in replacement relay provided on HT 11 KV panel board for incoming and outgoing feeders in 11 KV MRS & other installations for healty tripping for over current and earth fault complete all as specified and directed.

S & F in replacement of spring charging Gear assembly of VCB trolley as per existing sample complete all as specified and directed.

S & F in replacement of Shunt Tripping coil 24V DC of VCB trolley as per existing sample complete all as specified and directed.

S & F in replacement of Closing coil 24V DC of VCB trolley as per existing sample complete all as specified and directed.

S & F in replacement of Power pack with input 220 - 110V AC and output 24V DC of VCB as per existing Power pack complete all as specified and directed.

S & F in replacement of Plug & socket assembly as per existing sample of VCB trolley complete all as specified and directed.

S & F in replacement of Resign encapsulated vacuum interrupter bottles as per existing size/make specification circuit breaker trolley of 11 KV VCB complete all as specified and directed.

S & F in replacement of 11 KV/110 Volt 3 Phase 3 limb 3 wire resin cast, drawout type, air cooled, potential transformer having 100 KVA output at CL-0.5 and Rail complete all as specified and directed.

S & F in replacement of load break switch mechanism assembly complete having two position spring assisted, Integrated line earthing switch with making capacity complete as per existing sample all as specified and directed.

S & F in replacement of isolator switch mechanism assembly complete having two position spring assisted, Integrated line earthing switch with making capacity complete as per existing sample all as specified and directed.

S & F in replacement of Master trip relay as per existing specification and sample complete all as specified and directed.

M&L for calibration and relay setting and checking of Incomming /Outgoing VCB Trollys of any make, any size, any type, 11 KV for smooth and proper functioning including checking of all wiring incl new wiring where ever required complete for 11 KV MRS/Sub Station all as specified and directed.

M&L for pinpointing of 11 KV underground HT cable fault of any size with help of cable fault locating (CFL Machine) consisting of DC testing, thumping system and DIGI point sensor complete to locate the exact fault location complete all as specified and directed.

S & F in replacement of Space Heater 240 Voltage single phase. complete all as specified and directed.

M & L for danger notice plates made out of 1.6mm thick mild steel sheet, vitreous enamelled white letters, figures, and conventional skull and bones in signal red colour and fixed with M.S. clamps, bolts and nuts of approved size, for HT, 25x20cm size including taking down existing old unsv danger notice plate complete all as specified and directed by Engineer-in-Charge.

Supply and fixing cable route indicator showing "MES HT U/G Cable 11 KV/MES LT U/G Cable" (all words embosed) on route of cable with arrow made of CI insuitable shape and fixed on 25x4 mm angle iron not less than lenght of 600 mm, fixed in position with necessary PCC (1:2:4) including taking out old unserviceable indicators complete all as specified and directed by Engineer-in-Charge.

M & L for preparation of painted surfaces of two pole structure of MS/PCC HT poles, including protection pipes, cross arms, clamps, GI pipe bracket , angle iron , anti climbing devices etc. and applying one coat of aluminium paint on all the metallic surfaces complete all as specified and directed by Engineer -in-Charge.

M & L for preparation of painted surfaces of four pole structure of MS/PCC HT poles, including protection pipes, cross arms, clamps, GI pipe bracket , angle iron , anti climbing devices etc. and applying one coat of aluminium paint on all the metallic surfaces complete all as specified and directed by Engineer -in-Charge.

M&L Earthing complete with galvanised steel earth plate electrode 60cmx60cm, 6.0 mm thick, buried directly in ground (earth pit not less than 2.25 metres deep below ground level) with top edge of the plate at a depth not less than 1.5 metres below normal ground level, connected to galvanised earth lead wire 4.0mm dia by means of bolts,nuts, check nuts and washers of galvanished iron or steel all as shown in electrical plate No.3 connected to earthing test point all as specified or indicated including testing on completion directed by Engineer -in-Charge.

S & F in replacement anti climbing device compricing 2.24 mm dia galavanisied steel 2-strand barbed wire with 2.00mm dia barbs wrapped spirally round poles to a length of 0.5 to 1.0 mtr clamped and properly secured or as orderd clamps measured separetely complete all as specified and directed.

M & L in replacement galvanised iron strip 32 x 6 mm burried in ground complete all as specified.

R D Bansal

JASSI TRADERS

Northern cable fault locatoers