REPAIR AND MAINTENANCE OF STABILIZER, TRANSFORMER, HT LINE, GOD WITH CONNECTED ITEMS AT 213 TC UNDER GE NAGROTA

Amount

Taking down transformer mounted on two/four pole structure or on plateform / indoor floor mounted carefully from their position after removing electrical connection, earthing leads etc, for executing necessary comprehensive preventive maintenance as well as repairs necessiated, including to and fro transporting to MES store yard/ contractor workshop and refixing after execution of maint/repair to their original position or to other location as directed of capacity 40 KVA to 315 KVA.

Labour, tools & plants only for opening the top cover of transformer out/in door type, step down 11 KV/0.415 KV of cap 40 KVA to 315 KVA, lifting of core and winding, draining out transformer oil into container and keeping aside for treatment and reuse, carry out strip inspection of core and windings for comprehensive routine, preventive maintenance and any other necessary repairs required to be executed. Refitting the core & windings after carry necessary routine maintenance / preventive maintenance or repairs so ordered making all electrical connections, providing sundry items i.e bolts, nuts & washers, reassembling the transformer complete, including testing and commissioning to the entire satisfaction of the Engineer-in-Charge, complete all as specified and as directed.

Filtration, heating and dehydration of transformer oil (at site) on load system , EHV grade having dielectric strength not less than 55 KV with 2 mm gap high viscosity in transformer of cap 40 KVA to 315 KVA as per IS-335 of 1983. The reducing moisture, acidity carbon particle in transformer oil. Note :- The filtration, heating and dehydration of transformer oil shall be carried out at site. The unit rate quoted by the contractor shall interalia deemed to include for arrangement of filtration machine and its transportation to various locations of installation of transformer and top up of transformer oil

Supply, treating (dehydrating), filling new transformer oil in transformers for topping up levels or for replacement of unfit oil. New oil shall have dielectric strength not less than 60 KV and shall be conforming to IS 335.

Taking out old breathers from transformer, supplying and fixing new breather duly filled with activated agent i.e silica gel for transformer of cap 40 KVA to 315 KVA

Dismantling Core, taking out damaged coils (HV Coils) from its position replacement, including supplying and fixing new winding coils with super enamelled copper winding wires of required gauge, number of turnings & weight to suit with the existing coils with allied insulation materials, packing with spacers etc, complete all as specified and as directed by the Engr-in-Charge

Taking out damaged coils (LT Coils) from its position replacement, including supplying and fixing new winding coils with cotton braided copper wire or strip of appropriate size (thickness & width), number of turnings & weight to suit with the existing coils with allied insulation materials, packing with spacers etc, complete all as specified and as directed by the Engr-in-Charge.

Taking out HV porcelain bushes from transformers for replacement being damaged, including supply and fixing new HV porcelain, vitreous white, brown or green of voltage grade 11KV bushes to suit the size of transformers of different makes transformer of cap 40 KVA upto 315 KVA indoor/Outdoor

Taking out LV porcelain bushes from transformers for replacement being damaged, including supply and fixing new LV porcelain, vitreous white, brown or green of voltage grade 1100 V bushes to suit the size of transformers of different makes transformer of cap 40KVA upto 315 KVA indoor/out door

Taking out worn out HV metallic alloy(brass/gun metal) bush rods, including supply and fixing new HV metallic alloy (gun metal/brass) bus rods of suitable length and dia with necessary nuts, washers and bushing packing to prevent oil leaking from the bushes including making necessary connections for transformer of cap 40 KVA to 315 KVA

Taking out worn out LV metallic alloy (brass/gun metal) bush rods, including supply & fixing new LV metallic alloy (gun metal/brass) bus rods of suitable length and dia with necessary nuts, washers and bushing packing to prevent oil leaking from the bushes including making necessary connections for transformer of cap 40 KVA to 315 KVA

Supply, fixing, commissioning & testing of dial type temp gauge 100mm dia dial range 0-100 Cº complete with thermostat built in switch

M & L complete for taking out unserviceable tap changing gear for replacement, including supply & fixing, making connections, testing & commissioning new tap changing gears in transformers of any description / rating and make complete all as specified and as directed.

M & L complete for denting out damaged external cooling tube of transformer & bring them to their original shape, of any type and description against of cap 40 KVA to 315 KVA.

M & L for welding to iron surface sheet steel in cooling tube/ body of transformer of any description to prevent leakages of oil , welding in repairs exceeding 2.5 cm but n.exc 5 cm in length, thickness of metal to be welded n.exc 6mm.

Painting to transformer's old painted surface of steel after cleaning, scraping and preparing and filling cavities and providing one coat of synthetic enameled grey paint with spray gun process to transformer of Cap 40 to 315 KVA indoor/outdoor type

Disconnecting and removing to workshop opening for repair automatic voltage stabilizer for automatic operation air cooled servo controlled type input voltage 260-440V and output voltage 420 V of capacity 50 KVA to 160 KVA complete all as specified and as specified and as directed Note : Replacement of the parts if any found worn out/defective shall be measured and paid for separately.

Dismantling and rewinding of dimmer coil with super enameled copper winding wire including varnishing tapping and insulating material to get same capacity of 50 KVA to 160 KVA

Replacement of electronic circuit plate complete with DC transformers (PCB cold) complete capacity of 50 KVA to 160 KVA

Dismantling of old servo motor and supply and fix new servo motor of existing size and capacity complete all as specified and directed.

Dismantling of old carbon brush with carbon holder including supply and fixing new one complete

Replacement of brass studs fixed for input and output of stabilizer with brass nuts for upto 160 KVA cap

Painting to voltage stabilizer's old painted surface of steel after cleaning scrapping and preparing and filling cavities and providing two coat of synthetic enameled cream paint with spray gun process to voltage stabilizer of cap upto 160 KVA

Material and labour for 80 mm dia light grade GI tubing with all fittings for cable protection laid in trenches, fixed on wall/pole with necessary fixing arrangements including dismantling the old pipe.

Material and labour for cement concrete 1:4:8 type D2 using 40mm graded crushed trap stone aggregate for foundation of poles/stays.

M & L heat shrink cable end joint suitable termination outdoor type for 3 core cable XLPE with aluminium conductor 11000 volt graded (earthed) of cross sectional area 95 sqmm complete kit with all accessories and jointing material and testing after jointing

Material and labour for earthing complete with galvanised steel earth plate electrode 60cm x 60cm x 6mm thick buried directly in ground (earth pit not less than 2.25M deep below natural ground level ) with top edge of plate not less than 1.5M below normal ground level, surrounded from all sides alternate packed layer of char coal dust and comman salt and electrode connected with using 32x6 mm GI earth strip as a earth lead & 40 mm dia light grade GI protection pipe by means of bolts, nuts, check nuts and washers of galvanised iron or steel all as shown in electrical plate No. 3 of SSR part I including necessary earth work in type strata, foundation of pit and wall using PCC 1:3:6 type C1 using 20mm graded crushed stone aggregate 40 mm thick pit cover slab using RCC 1:2:4 type B0 using 12.50 mm graded crushed stone aggregate with 6 mm dia MS bar @ 100 mm C/C both ways GI medium grade 20 mm dia pipe for watering including funnel with wire mesh and 15 mm bore GI light grade pipe for earth lead wire protection up tp 7.5 mtr complete all as directed including testing complete on completion. Note for item No. 26 & 27 (i) GI wire/strip or protection pipe 15mm/40mm dia upto 7.5 RM included the quoted rate. (ii) The qty above the 7.5 RM shall be measured & paid separetely

Supply & fixing for GI strip 32x6mm on wall/batten or recessed or buried in ground complete all as directed by Engineer-in-Charge.

Taking down transformer of any size, any capacity and reinstalling after repair of platform (including lifting of transformer from the existing platform and reinstalling of transformer on new/exist platform).

M&L of transformer plateforms of size 2.50 m x 2.50m x 1.20m with following specifications as under:- a) Brick work in sub class B brick old size burnt clay bricks exc 6m mean radius on plan in cement mortar 1:4 complete all as specified and directed b) PCC 1:3:6 as in foundation filling and mass concrete c) Stone boulder filling n.exc 63mm including hand packing and ramming complete d) PCC 1:2 :4 as in flooring / top surface of plate form complete e) Plastering to brick work in CM 1:4 complete f) Angle iron as in post for fencing g) Chain link fencing of any size 4 mm dia GI wire

Excavation in trenches not exceeding 1.5m wide and not exceeding 1.5m in depth for electric poles, Stay foundation and under ground electric power cables and getting out in soft loose soil .

Excavation in trenches, exc 1.5 m wide and not exc 3 m in depth; and getting out soft/loose soil for soil for errection of HT poles/ laying of HT UG cable and stay assembly complete.

Returning, filling including spreading, levelling, watering and ramming in layers not exceeding 25cm in hard dense soil.

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

Supply, laying and spreading in layers dry clean river sand for cable cushioning with a layer of sand 8 Cm depth before laying & 15 cm depth after laying the cable punned down to a depth of 10 cm above the top of the cable.

Supply & laying burnt bricks sub class 'B' in trenches for cable protection complete all as specified and directed by Engineer-in-Charge..

M & L for laying connecting and testing of 1100 volts grade LT XLPE insulated screened, PVC bedded galvanised steel strip or wire armoured, heavy duty electric power cable with aluminium conductor of size and type complete all as specified and directed including dismantling and taking down existing old LT cable of any size and type from pole/duct/trench/floor/wall/pipe etc with cable end boxes, glands, bricks etc with necessary disconnection work and keep in safe custody for the following size of cables :- Note:- (i) Excavation and earth work, sand cushioning, bricks & cable protection pipe will be measured & paid under appropriate items of Schedule 'A'

Cable of size 4 core 25 Sq mm

Cable of size 3.5 core 35 Sq mm

Cable of size 3.5 core 50 Sq mm

Cable of size 3.5 core 70 Sq mm

Cable of size 3.5 core 95 Sq mm

Cable of size 3.5 core 120 Sq mm

Outgoing:- (a) MCCB 3 pole, 250 Amp, 25 KA, 415 volts AC with adjustable thermal and magnetic setting - 01 No (b) MCCB 3 pole, 200 Amp, 25 KA, 415 volts AC with adjustable thermal and magnetic setting- 01 No (c) MCCB 3 pole, 160 Amp, 25 KA, 415 volts AC with adjustable thermal and magnetic setting- 01 No (d) MCCB 3 pole, 40 Amp, 25 KA, 415 volts AC with adjustable thermal and magnetic setting- 02 Nos (01 Spare)

S& F Feeder piller box out door type ‘factory made’ made out from 16 SWG MS sheet supported with legs of 45cm long made of iron angle 25x25x4mm thick of size 75cm x60cm x45 cm with 04 Nos aluminium bus bar of 400 Amps mounted on porcelain insulator duly drilled hole for cable connection including front and rear side opening with locking arrangement including provision for incoming and outgoing cables with glands including painting with two coat of smoke grey synthetic enamel paint over a coat of red oxide primer, complete all as specified and directed by Engineer-in-Charge Note:- Feeder pillar box shall be mounted on brickwork in CM 1:4 not less than 30 cm above ground level with suitable foundation, rendering 15 mm in CM 1:6 and two coats of cement base paint and the rates shall be inclusive in the quoted rate.

S & F 10 mm thick Synthetic insutated mat suitable for 11000 Volt grade (ISI Marked) of size 2mx1mx10mm complete all as specified and directed.

S & F danger notice plate of size 25x20cm & 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 complete all as specified and directed.

M&L Anti climbing devices, Spikes type fabricated out of M.S bars (round,square and flat) including nuts, bolts, washers and welding in two halves made to shape to suit the cross section of the pole.

Material & Labour for stay asembly comprising of stay bow (4000 x 14mm), stay rod 215 cm long and 20 mm dia with nuts, stay plate 300 x 300 x 6 mm thick and 2 nos of thimble complete as shown in electric plate no 1 of SSR part-1 connected to loop type insulator, including dismantling old unserviceable stay assembly complete including loop insulator wire etc from LT poles NOTE :- Earth work excavation, concrete and loop type insulator shall be measured and paid separetely under relevent items of Sch 'A'.

Supply and fix HT loop type insulators, vitreous, porcelain brown, white or green insulators for working pressure of 11000 volts grade of large size with over all dimensions 90 x 140 mm clearance of hole 25.50 mm including dismantling of existing HT loop type insulator from HT poles of any height place and position.

S&F Galvanised stay wire stranded of size 7/4 mm including necessary binding, strengthening complete all as directed

Material and labour for PCC (1:2:4) type B-2, using 40 mm graded crushed stone aggregate for making good the road cutting/post holes all as directed by Engr in Charge.

M&L for PCC 1:3:6 type C-2 (using 40 mm graded crushed stone aggregate) as in foundation filling and mass concrete, complete all as specified and directed.

Supply and fix and draw ACSR Weasel/Squirrelconductor of size 06 strands of aluminium of 2.59/2.11 mm dia and 1 strand of steel of 2.59/2.11 mm dia on HT poles, bringing the sag within limit fixing on Insulator/Cross arms by means of necessary binding with 16 SWG aluminium binding wire and providing alkathin pipe of approved quality for jumpers, reconnecting the service connections after removing the carbon material including taking down ACSR conductor of any size & type from HT poles at any height position and place complete all as specified and directed by Engr-in-Charge.

Material and labour for switch Air break gang operated Triple pole, mechanically operated mounted on insulator & steel frame with operating mechanisum worked from ground level for current rating upto 400 Amps 11000 Volts all with male & female contacts, post insulator 15 Nos, operating rod, handle etc and renewal of jumpers with heavy duty alkathine pipe cable connections including dismantling of old unserviceable switches vertical/horizontal mounted, including insulator & operating mechanisum for repair/replacement of broken/worn out components and insulators etc complete.

Material and labour for switch Air break gang operated Triple pole, mechanically operated mounted on insulator & steel frame with operating mechanisum worked from ground level for current rating upto 200 Amps 11000 Volts all with male & female contacts, post insulator 15 Nos, operating rod, handle etc and renewal of jumpers with heavy duty alkathine pipe cable connections including dismantling of old unserviceable switches vertical/horizontal mounted, including insulator & operating mechanisum for repair/replacement of broken/worn out components and insulators etc complete.

Material and labour for drop out fuse assembly expulsion type single pole for 11 KV, 200 amps capacity complete consisting of galvanised steel base plate fuse carrying brackets channels with post insulator, fuse carrier fiber glass tube with fuse eliment complete including dismantling the old unserviceable one.

Material and labour for lightning arrester expulsion type high tension complete with all fittings transmission class discharge capacity 65 kilo amps suitable for 11 KV including necessary connections with over head lines & earthing fixed on 2/4 pole structure, including dismantling the old unserviceable one.

Supply & Laying reinforced precast concrete cable cover, class EHV, type 1 with peak, size 450mm x 230mm x 50mm thick complete all as specified.

Supply & Laying in trench or fixed to pole XLPE cable insulated screened, PVC bedded steel strip or wire, armoured, heavy duty electric power cable with aluminium conductor,11000 volts grade, cross-sectional area 95 Sqmm 3 core including taking down/out existing old HT cable of any size and type complete all as specified and directed. (Note : Excavation, returning and removal shall be measured and paid separately).

M & L 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 95 sqmm complete all as specified.

Material & Labour for cross arms, bracings, supports, clamps and back plate fabricated from structural steel sections including nuts, bolts, washers, welding, bending, drilling of holes for bolts in any shape or size as indicated and applying two coats of aluminium paint over a coat of red oxide primer including dismantling of existing mild steel cross arm with clamps from LT/HT poles of any height, place and position.

Supply and errect Steel tubular swaged poles complete with cast iron base plate, finial taper plug, bolts, nuts and screws as specified type 410 SP-55 (11 metres long), including dismantling of existing HT poles of any discription (tubular/steel/RCC) by cutting from the bottom dismantling the existing connection, channels, clamps nuts, bolts, etc. Note :- Excavation including refilling & removing material/Concrete work shall be measured & paid separetely

Supply and fix HT Pin type insulator, porcelain, vitreous, white, brown or green insulator including one galvanised iron mild steel spindle two galvanised iron washers and one galvanised iron nuts, 150 mm height, 150 mm dia for conductor 11000 volts grade including dismantling of existing HT pin type insulator from HT poles of any height, place, and position.

Supply and fix HT shackle type insulators, vitreous, porcelain brown, white or green insulators for working pressure of 1100 volts grade of 90 mm dia, 75mm height including galvanised mild steel strips 31 x 3 mm size and 12 mm dia bolts, nuts, and washers on existing cross arms including dismantling of existing HT shackle type insulator from HT poles of any height place and position.

Material and labour for earthing complete with galvanised steel earth plate electrode 60cm x 60cm x 6mm thick buried directly in ground (earth pit not less than 2.25M deep below natural ground level ) with top edge of plate not less than 1.5M below normal ground level, surrounded from all sides alternate packed layer of char coal dust and comman salt and electrode connected with galvanised iron earth lead wire 4mm dia by means of bolts, nuts, check nuts and washers of galvanised iron or steel all as shown in electrical plate No. 3 of SSR part I including necessary earth work in type strata, foundation of pit and wall using PCC 1:3:6 type C1 using 20mm graded crushed stone aggregate 40 mm thick pit cover slab using RCC 1:2:4 type B0 using 12.50 mm graded crushed stone aggregate with 6 mm dia MS bar @ 100 mm C/C both ways GI medium grade 20 mm dia pipe for watering including funnel with wire mesh and 15 mm bore GI light grade pipe for earth lead wire protection up tp 7.5 mtr complete all as directed including testing complete on completion.

M&L for earth continuity conductor or main earthing lead 4 mm dia GI or steel wire fixed to wall on batten or recessed or buried in ground or drawn in conduit/pipe all as required at site.

M&L for Preparing old painted surfaces of steel tubular poles sewaged pole of any description and length not exc 9 above ground level erected in vertical position in HT OH line including cross arms of angle iron/ channel section clamps brackets etc with one coat of aluminium paint 7.5 mtr from top of the pole onward & remaining with black & white paint strip in 30 cm width alternatively upto ground level & numbering the pole with white paint on black paint base 20 cm dia circular/square shape complete all as specified and directed by Engineer-in-Charge.

Restringing of existing HT over head line of ACSR conductor after opening of binding wire from insulator & bringing the sag within limit rebinding the same with insulator with 16 SWG aluminium wire all including renewal of jumpers with providing alkathin pipe of approved quality of jumpers, reconnecting the service connection after removing the carbon material complete all as directed by Engineer in Charge.

Cutting & trimming tree branches along HT over head lines after arranging shut down and by taking all precautions while working on lines, clearing of area, cleaning around sub stations, etc by employing a team of 3 labours for 8 hours per day including all T & P required for the purpose complete all as directed by Engineer-in-Charge.

Supply & install HT Bus bar chamber factory made weather and vermin proof having size 90x90x60 Cm made out of 3 mm thick MS sheet with 200 amp rated aluminium bus bar and with 11 KV pedestal type HT insulators 6 nos with angle iron frame of size 75x75x6 mm duly painted with 2 coats of enameled paint & necessary PCC work for foundation complete all as specified and directed by Engr-in-charge.

Surface excavation not less than 30 cm deep and average 15 Cm deep and getting out in soft/loose soil complete all as specified and directed by Engr-in Charge.

M&L for spreading coarse aggregate of 20 mm size upto 10 mm above the ground surface below the HT 2 pole, 4 pole structure including leveling & clearing ground surface by cutting shrubs,vegetation,grass, bushes,weeds & trees upto 30 Cm girth,sweeping & lying the same to distance not exceeding 50 M away from the 2 pole & 4 pole structure, all as specified & directed by Engr-in-Charge. Note :- Cutting & other neccessary material shall be provided by the contractor on his own arrangement

Broken stone or boulder hard core of gauge n.exc 63 mm, deposited, spread and levelled in layer not less than excedding 15 cm thick atered and rammed to levelled in layer not excedding 15 Cm thick watered and rammed to a true surface complete all as specified and directed by Engr-in-charge.

Exavation in post holes (for similar holes) each n.exc 0.5 cum, getting out soft/loose soil, returning,filling in and ramming each of broken rubble mixed with earth arounding layers not exc 25cm, watering, and removing surplus soil to a distance n.exc 50m and making good surface all as specified and directed.

S&F Mild steel work in posts and struts in fencing including cutting tops to shape as directed ,drilling holes notching for wire etc, flat iron fillets for securing wire mesh/chain link fencing including all necessary welding, drilling, bolting or riveting etc and similar work and providing MS flat for welding of GI mesh to posts or struts as specified and directed

S & F 4mm dia galvanised steel wire of mesh size 75mm x 75mm made up into matteress or cages,lapped wired and laid in position including closing after filling including fixing to steel post by welding etc all as specified and directed

Prepration of new steel surface and applying two coats of synthetic enamel paint over a coat of red oxide primer all as specified and directed

Framed work as in door or gate of angles or other section's with gusset plate, rails, braces etc, complete, drilled for fixing of steel sheeting or other covering door etc, to be prepared for hanging or sliding with and including either hooks and hinges or steel hanging door fittings (excluding of steel sheeting or other covering, running rails and guides) and hanging, also fastening and fixing complete of Gde Fe-290(Gde E-165)

M&L for Brick work with sub-class `B' bricks, straight or curved on plan exceeding 6 M mean radius built in cement mortar 1:6 complete all as specified and directed.

M&L rendering 15 mm thick on brick or concrete surfaces of wall in cement mortar 1:4 complete all as specified and directed.

Note:- Schedule of credit Rs. 1,59,208.00 will be deducted from total amount quoted while accepting the bid. Details of schedule of credit is given in tender documents.

Kalsi Engineers and contractors

SHSS ASSOCIATES

ASHOKA ENGINEERS AND BUILDERS

proach associates

M/S SHREE KRISHANA ENERPRISES

bamral builder