REPAIR / MAINTENANCE / REPLACEMENT OF DISTRIBUTION TRANSFORMER, DEHYDRATION AND TOPUP OF TRANSFORMER OIL,REPAIR / REPLACEMENT OF HT JOINT BOX, RELAYING OF HT CABLE AND CONNECTED WORKS AT AF STATION BIHTA

Amount

Excavating in trenches, not exceeding. 1.5 metre wide and not exceeding 1.5metre deep and getting out in soft / loose soil complete all as specified and directed by Engineer-in-Charge.

Excavating in trenches, exceeding. 1.5 metre deep and not exceeding 3.00 metre deep and not exceeding 1.5metre wide and getting out in soft / loose soil complete all as specified and directed by Engineer-in-Charge.

Returning filling in foundation / trenches including spreading leveling, watering and well ramming in layers not exceeding 25cm thick in soil complete all as specified and directed by Engineer-in-Charge.

Removal of surplus excavated material to a distance n.exc. 50 metre and depositing where directed at a level n.exc. 1.5 metre above starting point complete all as specified and directed by Engineer-in-Charge.

Supply and spreading clean and dry screened sand (unwashed) in trenches around the cable for cushioning complete all as specified and directed by Engineer-in-Charge. Note :- Punned thickness shall be measured.

Providing, plain cement concrete 1:4:8 type D-2, (using 40 mm graded crushed stone aggregate) as in mass concrete, filling and foundation etc complete all as specified and directed.

Providing, plain cement concrete 1:3:6 type B1, (20mm graded crushed store aggregate) as in mass concrete, filling and foundation etc complete all as specified and directed.

Laying only in trenches dry well burnt bricks obtained in protections of cable laid flat perpendicular to the direction of cable over sand cushioning for protection of cable complete all as specified and directed.

Supply and laying in trenches dry well burnt best class locally available sub class 'B' bricks over sand cushioning for protection of cable complete all as specified and directed.

Disconnecting & taking out defective under ground cable from trenches, pole, pipe, floor, wall etc locate the fault, rectify the defect and relaying the XLPE cable under ground PVC insulated and overall sheathed aluminum conductor heavy duty 11000 volts connecting and testing complete all as directed by Engineer-in-Charge (Excavation, earth work, brick protection sand cushioning and GI pipe etc shall be measured & paid for separately).

Supply, laying & testing cross linked polyethylene insulated (XLPE) galvanised steel strip armoured cable with aluminum conductor, 11 KV `E’, of cross sectional area 95 Sqmm, three core (IS-7098) in trenches/through pipes/ducts or on poles road crossing etc including taking out of old Cable complete all as specified and directed by Engineer-in-Charge. Note :- (i) Excavation, earthwork, cable protection cover, cable joint, sand cushioning shall be measured and paid for separately under respective item of this schedule. (ii) Old cable, cable joint, brick cover, pipe etc shall be contractor property and necessary amount as per schedule of credit shall be deducted from contractor's due payments.

Material and labour for cable jointing kit for 11 KV (earthed) heat shrinkable, outdoor terminitation suitable for cross sectional area 50 to 95 Sqmm, 3 core aluminium conductor XLPE Cable including jointing material and accessories complete and cutting of old cable complete all as specified and directed by Engineer-in-Charge.

Material and labour for cable jointing kit for 11 KV (earthed) heat shrinkable, indoor termination suitable for cross sectional area 50 to 95 Sqmm, 3 core aluminium conductor XLPE Cable including jointing material and accessories complete and cutting of old cable complete all as specified and directed by Engineer-in-Charge.

Material and labour for cable jointing kit for 11 KV (earthed) heat shrinkable, straight through suitable for cross sectional area 50 to 95 Sqmm, 3 core aluminium conductor XLPE Cable including jointing material and accessories complete and cutting of old cable complete all as specified and directed by Engineer-in-Charge.

Earthing complete with galvanised steel earth plate electrode 600x600x6mm thick directly burried in ground (earth pit not less than 2.25 m deep below ground level) with top edge of earth plate not less than 1.5metre below the ground level connected to GI strip 32x6 mm by means of bolts nuts check nuts and washers of galvanised iron at 2 points & GI pipe 40 mm bore medium grade for protection of earth strip, PCC chamber 1:3:6 (type C-1) using 20mm graded stone aggregate, funnel with wire mesh, 50 mm thick cover of RCC 1:2:4 type B-1 using 20mm graded stone aggregate reinforced with 8 mm MS bars at 150 mm centre to centre both ways, CI frame and charcoal dust and common salt, all as shown in electrical plate No. 3 of MES SSR part-I and making test point as specified including excavation & earth work in any type of soil and connecting the earthing to an earthing point/equipment as specified and directed & testing on completion. NOTES : (i) The concrete pit shall be made in PCC 1:3:6 type C-1, using 20mm graded crushed stone aggregate 40mm thick precast cover slab of RCC (1:2:4), type B-1, using 20mm graded crushed stone aggregate with suitable MS handle in lieu of CI cover. (ii) Item includes the cost of 7.5 metre GI pipe for protection of earth strip. Any variation in length shall be adjusted through deviation order (iii) Items includes cost of 7.5 metre earth lead strip. Any variation in length shall be adjusted through deviation order. (iv) Earth electrode shall be surrounded by adequate quantity of charcoal dust and salt to a packed thickness of 15 cm on all sides

Material and labour for replacement of unserviceable/damaged cable route indicator showing "MES HT U/G 11 KV" and route of cable with arrow (Embossed or engraved) made of RCC 1:2:4 type B-0 (using 12.5 mm graded stone aggregate) 50 mm thick reinforced with 8 mm dia TMT bar at the rate of 100 mm centre to centre in suitable shape and size 60 cm x 30 cm fixed in PCC block 1:3:6 type C-2 (using 40mm graded aggregate)(size of block 30cmx 30x15cm) of 30 cm below ground level and 30cm above ground to show clear indication of cable including painting the complete slab with red paint and marking the engraved/embosed letters/arrow with white paint complete all as directed. Note :- Quoted rate shall be deemed to included the cost of excavation, returning, filling and removal of excavated earth upto a distance of not exceeding 50 mtr complete.

Material and labour for complete removal of existing painting on steel surfaces and applying two coats of synthetic enamel paint over a coat of red oxide primer complete all as specified and directed.

Supply and fixed in repairs danger notice plate of size 25 cm x 20 cm x 1.60 mm thick mild steel sheet vitreous enameled white, with letters, figures and conventional skull and bones in signal red colour and fixed with MS clamps made out of 25 mm x 3 mm MS flat iron including bolts and nuts of requitred size for HT 11000 volts complete all as directed.

Supply and filling of transformer oil EHV as per IS 335 of 1993 Part II. Note :- (i) Oil shall be brought in the manufacture sealed contrainer (drum) and shall be kept in safe custody of Engineer-in-Charge. (ii) Contractor shall hand over the purchase voucher and manufacturer's test certificate to the engineer in charge. (iii) Di-electric strength shall not be less than 60 KV AT 2.5 MM GAP

Supply and fix in replacement of new HT box of any size, install, testing and commissioning of HT Junction box size 1200x1000x1000mm, factory made, outdoor pedestal type, double door, fabricated out of 3.15 mm thick CRCA sheet and angle iron frame 50x50x6mm sloppy roof, locking arrangement comprising 50mm size Gorrej brass pad lock with duplicate keys two earth terminal, suitable cable gland for incoming and outgoing HT cable and protection of joint, grouting of feeder pillar box by providing 90 cm long long angle iron of size 50x50x6mm welded on all the four cornors embedded in platform not less than 1 Mtr height. All steel metal works including frame shall be with anticorrosive coating with seven tank process and finally epoxy polyster powder coating of flint grey shade. The panel shall having aluminimum bus bar three strips of minimum size 400mmx40mmx8mm with procelain H12 KV HT long insulator complete including taking down old rusted HT box, complete all as directed. Note :- (i) Quoted rate shall be deemed to include the cost of platform as specified in particular specifications. (ii) Joint shall be measured and paid for separately under relevant schedule item. (iii) Quoted rate shall also includes work for extension of cable loop and fixing in position all as specified.

Supply and fix in replacement of damaged non-metal part HV bushing complete with packing materials for transformer capacity upto 200 KVA and working pressure 11000 Volts complete all as specified and directed by Garrison Engineer.

Supply and fix in replacement of damaged non-metal part HV bushing complete with packing materials for transformer capacity exceeding 200 KVA and upto 500 KVA and working pressure 11000 Volts complete all as specified and directed by Garrison Engineer.

Supply and fix in replacement of damaged HT bush rod of suitable size for transformer capacity upto 200 KVA suitable for indoor / outdoor transformer complete all as specified and directed by Garrison Engineer.

Supply and fix in replacement of damaged HT bush rod of suitable size for transformer capacity exceeding 200 KVA and upto 500 KVA suitable for indoor / outdoor transformer complete all as specified and directed by Garrison Engineer.

Supply and fix in replacement of damaged non-metal part LV bushing complete with packing materials for transformer capacity upto 200 KVA and working pressure 1100 Volts complete all as specified and directed by Garrison Engineer.

Supply and fix in replacement of damaged LT bush rod of suitable size for transformer capacity upto 200 KVA suitable for indoor / outdoor transformer complete all as specified and directed by Garrison Engineer.

Supply and fix clear view Silica gel breather aluminimum body complete with fresh silica gel blue in colour of standard size 5-8 mm thick for transformer of capacity upto 250 KVA complete all as specified and directed by Garrison Engineer.

Supply and fix clear view Silica gel breather aluminimum body complete with fresh silica gel blue in colour of standard size 5-8 mm thick for transformer of capacity exceeding 250 KVA and upto 500 KVA complete all as specified and directed by Garrison Engineer.

Supply and fix dropout fuses fibre tube with metal fitting on both ends suitable for 11 KV GOD complete all as specified and directed by Garrison Engineer.

Supply and fix 100 mm dia temprature gauge dial type including maximum temprature indicator complete all as specified and directed by Garrison Engineer. Note :- Make - L& T, Siemens, ABB or any other reputed make).

Material and labour for earth continuity conductor or main earthing lead of 32 x 6 mm galvanised iron strip fixed to wall on batten or recessor chases or buried in ground or drawn in conduit / pipe or fixed to poles or any other indicated location for loop earthing complete all as specified and directed by Engineer-in-Charge.

Material and labour repair / servicing of existing HT 11 KV 200 Amps GOD switch including replacement of damaged spare parts like Arching horn, contact gun, wire mesh, jumping cable, replacement of complete rusted nut, bolt and washers, bulldog grip, handle grip, greasing of moving parts complete all as specified and directed by Engineer-in-Charge.

B.K. ROY & SONS

AKSHITA ELECTRICAL

M/S MECHANICAL ENGINEERING and ELECTRICAL CONTRACTORS

M/S SAROJ KUMAR SINGH