CWE/HSR-20 OF 2023-24 REPAIR/MAINT OF HT 11 KV SWITCH GEARS, VOLTAGE STABLIZERS AND TRANSFORMERS AT HISAR MIL STN UNDER GE HISAR

Amount

Disconnecting the AC and DC electric supply of voltage stablizer servo controlled, transport to civil workshop, opening, dismantling voltage stablizer servo controlled 3 phase input voltage 300-480 Volts and output voltage 385-415 Volts AC supply, 50 Hz of 100 KVA capacity removing unserviceable/ defective parts including cleaning and servicing, top up the oil etc complete and replacement of unserviceable parts with new one, winding the coils and reassembling and transporting back at site and testing on full load complete all as specified and directed. Note:- (i) Spare parts to be replaced and oil filling to be measured and paid seperately under relevant items. (ii) The voltage stablizer servo controlled shall be dismantle in the presence of Engineer-in-charge or his rep. (iii) The spare parts replaced shall be of existing make or equivalent as approved.

S&F in replacement of servo control card of existing size and make

S&F in replacement dimmer of motor 10 kg as per existing

S&F in replacement of transformer 24 volt as per existing

S&F in replacement of gear of teeth as per existing

M&L for rewinding of coil of gauge 150 Amps as per existing

S&F in replacement of low and high cut off of transformer 24 volt as per existing

S&F in replacement of SPDT switch as per existing

S&F in replacement of pot switch as per existing

S&F in replacement of relay as per existing

Isolating 11 KV HT over head supply from the transformer of capacity upto 200 KVA and earth the complete system properly, disconnecting complete electric system of the transformer from HT and LT side including earthing strips, removing transformer and taking out from substation or taking down from 2/4 pole structure and transporting to authorized service centre/ work shop for repair and Draining out the complete transformer oil and keeping in safe custody in clean and dry containers for reuse. Opening the top cover of the transformer, disconnecting and taking out complete core assy and dismantling it for checking the serviceability of the coil winding, checking the condition of the body, cleaning the tank and remove sludge/dirt, cleaning the coils limbs, re-fixing of core, core assy, tap changer assembly, HT/LT winding connection, terminal studs of HT/LT sides and reassembling of transformer after repairs, refitting the transformer coil including improvement of Insulation Resistance value within desired level by heating or any other method to required level complete and back to the installation after repair including installing, commissioning & testing on full load of the following capacity complete all as specified and directed :- Note :- Necessary T&P should be arranged by the contractor. The rate of T&P is included in above quoted rate upto 200 KVA

all as per above item No. 11 but 250 KVA to 400 KVA

all as per above item No. 11 but 500 KVA to 750 KVA

Supply only primary (HV side) double paper cover aluminium winded coils of existing type, size, gauge and in weight complete with including11000 volt grade insulating material for transformer of 50 KVA to 400 KVA complete all as specified and directed.

Supply only primary (LV side 415 Voltage grade) double paper cover aluminium winded coils of existing type, size, gauge and in weight complete with including 1100 volt grade insulating material for transformer of 50 KVA to 400 KVA complete all as specified and directed.

Supply only (HV side) copper winded coil of existing type size and gauge 11000 voltage complete with insulating material for transformers 50 KVA to 400 KVA complete all as specified and directed.

Supply only (HV side) copper winded coil of existing type size and gauge 11000 voltage complete with insulating material for transformers 400 KVA to 750 KVA complete all as specified and directed.

Supply only (LV side 415 Voltage grade) copper winded coil of existing type size and gauge 1100 voltage complete with insulating material for transformers 50 KVA to 400 KVA complete all as specified and directed.

Supply only (LV side 415 Voltage grade) copper winded coil of existing type size and gauge 1100 voltage complete with insulating material for transformers 400 KVA to 750 KVA complete all as specified and directed.

Supply only new off load tap changer assembly complete, making connection and testing complete of the transformer capacity of 50 KVA to 200 KVA

Supply only new off load tap changer assembly complete, making connection and testing complete of the transformer capacity of 250 KVA to 400 KVA

Supply only new off load tap changer assembly complete, making connection and testing complete of the transformer capacity of 500 KVA to 750 KVA

Supply only for replacement of cork sheet gasket of 06 mm thick for transformer tank complete all as specified and directed. Note for item No 14 to 22 : (a) Actual weight of each coil shall be measured and paid. (b) Fitting charges for formed coil and other spares / parts included in serial item No 11 above.

M&L for cold rolled grain oriented core (CRGO) for transformer upto 50 to 500 KVA capacity complete all as specified and directed

Isolating of HT 11 KV supply and earthing the complete system opening and taking down top cover of the transformer of any capacity installed on 2 pole / 4 pole structure or indoor / outdoor sub stn. Drain out the transformer oil up to the required level for repair/replacement of part and keeping in safe custody for reuse. Refilling transformer oil, refixing the top cover, taping and commissioning of the transformer after the repair complete all as specified and directed. Note : (a) Container for keeping the transformer oil safe for reuse will be arranged by contractor. (b) HT/LT bushing lead & copper terminal rod shall be measured and paid for separately as supply only under respective item of sch ‘A’.

Supply only, HV bushing (11000 voltage graded) with heat resistance gasket suitable for following capacity of outdoor / indoor type transformer 50 KVA to 200 KVA.

Supply only, HV bushing (11000 voltage graded) with heat resistance gasket suitable for following capacity of outdoor / indoor type transformer 250 KVA to 750 KVA

Supply only copper terminal stud, both end threaded complete with double nuts & washers including distance piece both sides and heat resistance gasket suitable for HV size 11000 volts grade for following capacity of outdoor / indoor type transformer 50 KVA to 200 KVA

Supply only copper terminal stud, both end threaded complete with double nuts & washers including distance piece both sides and heat resistance gasket suitable for HV size 11000 volts grade for following capacity of outdoor / indoor type transformer 250 KVA to 750 KVA

Supply only LV bushing (415 voltage grade) with heat resistance gasket suitable for following cap of outdoor/indoor type transformer 50 KVA to 200 KVA

Supply only LV bushing (415 voltage grade) with heat resistance gasket suitable for following cap of outdoor/indoor type transformer 250 KVA to 400 KVA

Supply only LV bushing (415 voltage grade) with heat resistance gasket suitable for following cap of outdoor/indoor type transformer 500 KVA to 750 KVA

Supply only copper terminal stud, both end threaded complete with double nuts & washers including distance piece both sides and heat resistance gasket suitable for LV size 415 volts grade and for following capacity of outdoor / indoor type transformer 50 KVA to 200 KVA.

Supply only copper terminal stud, both end threaded complete with double nuts & washers including distance piece both sides and heat resistance gasket suitable for LV size 415 volts grade and for following capacity of outdoor / indoor type transformer 250 KVA to 400 KVA

Supply only copper terminal stud, both end threaded complete with double nuts & washers including distance piece both sides and heat resistance gasket suitable for LV size 415 volts grade and for following capacity of outdoor / indoor type transformer 500 KVA to 750 KVA

Supply only aluminium strip 130mmx30mmx6mm (Length Xbreadth X thickness) including two hole 6mm in both side for copper terminal stud complete with double nuts & washers suitable for LV size 415 volts grade and for 50KVA to 160 KVA capacity of outdoor / indoor type transformer :-

Supply only aluminium strip 130mmx40mmx10mm (Length Xbreadth X thickness) including two hole 6mm in both side for copper terminal stud complete with double nuts & washers suitable for LV size 415 volts grade and for 250 KVA to 400 KVA capacity of outdoor / indoor type transformer :-

Supply only aluminium strip 130mmx80mmx10mm (Length Xbreadth X thickness) including two hole 6mm in both side for copper terminal stud complete with double nuts & washers suitable for LV size 415 volts grade and for 500 KVA to 750 KVA capacity of outdoor / indoor type transformer :- Note for item No 26 to 38 : Fixing charges of parts under these items are included under item No - 25.

Material and labour for replacement of silica gel breather filled with silica gel complete for transformer of capacity up to 500 KVA.

Supply & pouring of fresh transformer oil in transformers for topping up the level or replacement complete all as directed (Transformer oil shall confirm to relevant IS -335 and dielectric strength of 45 KV) and getting it tested before and after filling complete

Material & labour for cleaning sprinkled transformer oil and all other foreign materials from external surface of transformer of capacity up to 100 KVA and preparing the surface to receive paint, and applying one coat of synthetic enamel paint, including writing SM No / MES No with white paint on black base complete all as specified and directed.

Material & labour for cleaning sprinkled transformer oil and all other foreign materials from external surface of transformer of capacity for 150 KVA to 200 KVA and preparing the surface to receive paint, and applying one coat of synthetic enamel paint, including writing SM No / MES No with white paint on black base complete all as specified and directed.

Material & labour for cleaning sprinkled transformer oil and all other foreign materials from external surface of transformer of capacity for 250 KVA to 315 KVA and preparing the surface to receive paint, and applying one coat of synthetic enamel paint, including writing SM No / MES No with white paint on black base complete all as specified and directed.

Material & labour for cleaning sprinkled transformer oil and all other foreign materials from external surface of transformer of capacity for 400 KVA to 750 KVA and preparing the surface to receive paint, and applying one coat of synthetic enamel paint, including writing SM No / MES No with white paint on black base complete all as specified and directed.

Disconnection carefully of electric supply and M & L for Providing in repair connection of LT cable of following sizes with aluminium thimbles for LT side of transformer / LT panel 70 sqmm 3.5 core

Disconnection carefully of electric supply and M & L for Providing in repair connection of LT cable of following sizes with aluminium thimbles for LT side of transformer / LT panel 95 sqmm 3.5 core

Disconnection carefully of electric supply and M & L for Providing in repair connection of LT cable of following sizes with aluminium thimbles for LT side of transformer / LT panel 120 sqmm 3.5 core

Disconnection carefully of electric supply and M & L for Providing in repair connection of LT cable of following sizes with aluminium thimbles for LT side of transformer / LT panel 185 sqmm 3.5 core

Disconnection carefully of electric supply and M & L for Providing in repair connection of LT cable of following sizes with aluminium thimbles for LT side of transformer / LT panel 240 sqmm 3.5 core

Disconnection carefully of electric supply and M & L for Providing in repair connection of LT cable of following sizes with aluminium thimbles for LT side of transformer / LT panel 300 sqmm 3.5 core

Material & labour for dehydration and filtration of transformer oil of existing transformer of capacity upto 750 KVA, 11/0.433 KV to obtain dielectric strength more than 40 KV at 2.5 mm gap including, testing complete all as specified and directed.

Supply and fixing of oil temp gauge 0-120 degree Celsius with inbuilt sensor to be fitted on transformer and dismantling of existing unserviceable gauge of any capacity.

Material and labour for in replacement for Explosion vent diaphragm suitable for 50 KVA to 250 KVA transformer complete all as specified and directed.

Material and labour for in replacement for Explosion vent diaphragm suitable for 315 KVA to 750 KVA transformer complete all as specified and directed.

Material & labour for topping up silica gel Crystals in the breather for transformer complete all as specified and directed.

Material & labour for replacement of oil level indicator complete all as specified and directed.

Material & labour replacement of Cross Arms bracings supports, clamps, eye hook and back plates fabricated from structural steel sections including pole clamps stay clamps, D clamps nuts, bolts , washers welding bending cold 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 aluminium paint complete all as specified and directed.

M&L for replacement of earthing continuity conductor or main earthing lead fixed to wall or batten or recess or buried in ground or drawn in conduit /pipe or fixed to poles or any other indicated situation for loop earthing etc. as required 25 x4 mm galvanized iron strip complete all as specified and directed.

Material and labour in replacement of cable box of Transformer on LT side n exc 80 x 60 x 20 cm of MS sheet, thickness not less than 3.15 mm and fixing with Transformer of cap 63 to 400 KVA with cable gland as reqd after painted one coat of primer and two coats of synthetic enamel gray paint complete all as specified and directed.

M&L for replacement of 11 KV 200 Amps Air Break Switch with Dropout fuse Set 12 insulator mechanically operated and MS galvanized steel frame with operating mechanism worked from ground level including operating rod of size 32 mm dia GI medium grade for current rating upto 200 Amps 11000 volts complete with locking arrangement, MS clamps, bolts, nuts and washers etc.including two coat of aluminium paint over a coat of red oxide primer on MS work complete all as specified and directed. Note :- (a) The cost of jumpers, Al thimbles, connections etc. shall be deemed to be included in quoted rates. (b) The handle should be covered with PVC sleeves.

Supply and installation in replacement of drop out fuse assembley with insulator single pole 11 KV, 25 Amps rating complete expulsion fuse element mounted on four / two pole structures complete all as specified and directed. Note :- The cost of necessary Nut, bolt and washers shall be deemed to be included in above quoted rate.

M&L in replacement for lightening arrestors expulsion type complete with all fittings, transmission class discharge capacity 65 Kilo Amps 11000 volts complete all as specified and directed.

M&L in replacement for earthing complete with using galvanized iron strip 25 x 4 mm as earthing lead with galvanized steel earth plate electrode size 600 mm x 600 mm x 6 mm thick buried directly in ground vertically in a pit of depth not less than 2.25 mtr below ground levels with top edge of the earth plate not less than 1.5 mtr below normal ground level surrounded from all sides by mixture of charcoal and common salt and electrode connected to and including galvanized earth lead 25 x 4 mm by means of bolts, nuts, check nuts and washers of galvanized including GI protection pipe light grade 40 mm dia connected to main earth on pole or control board and GI pipe light grade 20mm bore for watering funnel with wire mesh. RCC cover with frame, PCC chamber pit with PCC 1:3:6 type C-1, excavation and earth work all as shown in electrical plate No 3 of SSR Part-I, connected to earthing test point all as specified or indicated including testing on completion including taking down existing u/s earthing Note :-galvanized strip of extra length of main earthing lead beyond 7.5 mtr will be measured and paid separately).

Taking out the old unserviceable HT underground cable 95 sqmm 3core 11000 volts grade, XLPE insulated and PVC sheathed, armoured heavy duty with multistrand aluminium conductors from trenches/wall/floor/road/ culverts or pole etc complete all as specified and directed .

Supplying, laying jointing testing and commissioning of HT underground XLPE insulated, screened PVC bedded galvanized steel strip armoured electric power cable (heavy duty) with aluminium conductor 11KV grade (Earthed) of size 95 sqmm 3 core confirming to IS-7098 Pt-II cable laid in trenches/walls/ducts/poles etc. complete all as specified and directed.

Taking out the old unserviceable LT underground cable of size 185 sq mm 3.5 core, XLPE insulated and PVC sheathed, armoured heavy duty with multistrand aluminium conductors from trenches/wall/floor/road/ culverts or pole etc complete all as specified and directed .

Supply, laying and testing cable XLPE Insulated ,screened, PVC bedded, galvanized steel strip armoured, electric power cables (heavy duty) 1100 Volts grade with stranded aluminium conductor of size 185 sq mm 3.5 core including thimble all connection complete as directed by Engr-in-charge

Disconnecting and taking down HT UG cable from HT pole/ Transformer and cutting faulty end portion of the cable, dressing properly and making good end termination, out door type fixed with and including suitable size of hot shrinkable new jointing kit 11000 voltage grade and aluminium lugs duly crimped with crimping tool for 95 Sqmm 3 core HT XLPE cable complete all as specified and directed.

Disconnecting and taking down HT UG cable from HT pole/ Transformer and cutting faulty end portion of the cable, dressing properly and making good end termination, out door type fixed with and including suitable size of cold shrinkable new jointing kit 11000 voltage grade and aluminium lugs duly crimped with crimping tool for 120 to 185 sqmm Sqmm 3 core HT XLPE cable complete all as specified and directed.

Supply and fix cable jointing kit for 11 KV grade cable for in straight termination, hot shrink type, joint complete with jointing material and accessories suitable for3 core XLPE, armoured, Al conductor cable of size 95 sqmm

Supply and fix cable jointing kit for 11 KV grade cable for in straight termination, cold shrink type, joint complete with jointing material and accessories suitable for3 core XLPE, armoured, Al conductor cable of size 120 sqmm to 185 sqmm

Excavation in trenches in soft/loose soil not exceeding 1.5 m wide and not exceeding 1.5 m in depth for laying of cable etc. and for foundation of poles, stays etc. n exc 10 sqm on plan and n exc 1.5 in depth and getting out complete all as specified and directed.

Excavation in trenches not exc 1.5m wide and exc 1.5m and not exc 3.0m in depth for laying of cable etc. and for foundation of poles, stays etc, not exc 10sqm on plan and getting out in soft / loose soil complete all as specified and directed.

M&L for sand cushioning to under ground cable in trenches / ducts in layers of 8cm deep before laying the cable and 15cm deep after laying and stretching the cable complete all as specified and directed. Note : Punned thickness shall be measured.

Taking out existing serviceable / unserviceable bricks / PCC cover slab over UG Cables, from trenches and stacking at site for re use complete all as specified and directed.

Laying only old serviceable PCC cover retrieved from item srl No 66 above complete all as specified and directed.

M&L for brick covering to underground electric cable using sub class ‘B’ bricks, laid dry, flat, perpendicular to the direction of cable etc complete all as specified and directed. .

Supplying and laying reinforced precast concrete cable cover class HV type 1 flat size 300mm x 180mm x 40mm (ISI Marked) complete all as specified and directed.

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

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

Surface excavation n exc 30 cm depth and averaging 15 cm depth and getting out in soft / loose soil including clearing away all grass and vegitation saplings, shrubs, bushes, undergrowth roots and removing rubbish upto a distance n exc 50 mtrs outside the perifery of the transformer / 2 pole / 4 pole structure / feeder pillar box / sub Stn incl Water supply and Elect supply area complete all as specified and directed. Note :- The contractor will ensure that no vegiation grows during the contract period on the area so excavated.

Taking down cement or cement lime plaster, any description on brick or stone walls, etc including racking out joints, hacking for key, scrubbing down with water etc, complete all as specified and directed.

M&L for 10mm thick rendering in cement mortar (1:4) on fair face of brick walls / concrete surfaces finished even and smooth without using extra cement complete all as specified and directed.

M&L for providing 100mm PCC platform on top of brick masonry of Size 3x3 mtrs (outer dimensions) and 1.2 mtr high from ground level and 0.5 mtr below ground level for placing Transformer, chainlink fencing around the platform fixed to angle iron post 1.8 mtr high using angle iron of size 40mm x 40mm x 6mm, mild steel round bars (straight or cambered) 10mm dia for tightening of chain link fencing and 1.00m away from platform with entry gate and steps and applying a coat of black bituminious paint over a coat of red oxide primer on the steel surfaces complete all as specified and directed including provision as under :- (i) 100mm thick PCC (1:4:8) type D-2 (using 40mm graded stone aggregate) as in foundation of brick wall and fencing post including excavation in earthwork, return filling in and removal of surplus soil. (ii) Brick work with fly ash brick in CM 1:6 including 15mm thick plastering in CM 1:4 over exposed surfaces. (iii) 100mm thick hard core using brick bats of grade n.exc 63mm. (iv) 100mm thick PCC (1:4:8) type D-2 (using 40mm graded stone aggregate) as in sub base. (v) 100mm thick PCC (1:2:4) type D-2 (using 20mm graded stone aggregate) as in flooring finished even and fair. (vi) Two coats of cement base paint over a coat of cement primer over plastered surfaces complete. (vii) Chain link MS galvanised fancing of mesh size 75mm x 75mm and dia of wire 3mm complete.

Disconnecting the electric supply and opening the HT/LT electrical connections from the transformer of capacity upto 400 KVA alongwith LT panel and transporting/ relocating to a new location at distance not more than 1 KM from the existing location and re-fixing the transformer and LT panel complete all as specified and directed by Engineer-in-charge

Supply, errecting & fixing in true vertical position pre stressed concrete pole conforming to IS-1678 of 11 mtr long, 152mm x 152mm at top and 152mm x 260mm at bottom, class 9 complete as specified and directed. Note : (i) The conductors / earth wires on existing pole to be shifted on new pole after errection of new pole. The rate shall be include in above quoted rate. (ii) Earth work & PCC shall be measured and paid separately.

M&L for Anti-climbing device spikes type fabricated out of MS bars (round, Square and flat ) including nuts, bolts, washers and welding into halves made to shape to suit the cross section of the pole complete all as specified and directed.

M&L for Danger notice plate of size 25 x 20cm of 1.6mm thick mild steel sheet painted with vitreous enameled white paint, with letters, figures, and conventional skull and bones, in signal red colour and fixed with MS clamps of flat iron of size 25 x 5mm, bolts, and nuts of approved size complete all as specified and directed.

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

M&L for PCC (1:3:6) type C-1 using 20 mm graded stone aggregate in mass concrete and filling including necessary form work complete all as specified and directed.

M&L for PCC (1:2:4) type B-1 using 20 mm graded stone aggregate as in coping and the like including weathering slightly rounded or chamfered angles including necessary form work complete all as specified and directed.

S&F in replacement steel water tubing light grade of size 80 mm dia conforming to IS 1239 for fixing as operating rod of switch air brake gang operated triple pole, fixed with ms galvanized steel frame including necessery welding, nuts, bolts or washers etc all as directed.

Supply and fixing in replacement 100mm bore steel tube of light grade galvanised with all fittings fixed to walls / floors / poles or under road etc of following sizes complete all as specified and directed. Note : (i) The GI pipe should be fixed with pole by MS clamps. (ii) The MS work should be measured and paid separately.

DABAA CONTRACTORS

SAINI ELECTRIC STORE

Raman Electric Trading Co

m/s Rajesh Kumar

VISHAL ENGINEERING COMPANY