REPAIR / MAINT OF HT, 11 KV TRANSFORMER, GOD, VCB, RMU, HT OVER HEADLINE AND UG CABLE AT AF STATION GORAKHPUR

Amount

Excavating in trenches (soft/loose/dense soil), n.exc. 1.5metre wide and n.exc. 1.5metre deep and getting out 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.

Supply and laying hard core of stone aggregate grading 50 to to 20 mm or grading II 63 to 40 mm size at out door substation complete all as specified and directed. Note :- 10% voids shall be deducted from thickness of hard core.

Provide, plain cement concrete 1:3:6 type C-2, (using 40 mm graded crushed stone aggregate) as in mass concrete, sub base and foundation etc complete all as specified and directed.

Providing, plain cement concrete 1:2:4 type B1, (20mm graded crushed store aggregate) in copings, and the like including weathering, slightly rounded or chamered angles and throating, including necessary form work complete all as specified and directed.

Supply and laying un-reinforced precast concrete cable cover class HVP type 2 with peak size 450 mm x 180 mm x 40 mm complete all as specified and directed by Engineer-in-Charge.

Supply and fix mild steel chequerred plates of size 300 mm x 700 mm x 6mm thick or as per site requirement complete all as specified and directed by Engineer-in-Charge.

Supply only electric rubber hand gloves 33 KV complete all as specified and directed by Engineer-in-Charge.

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.

Supply, laying & testing cross linked polyethylene insulated (XLPE) galvanised steel strip armoured cable with aluminum conductor, 11 KV `E’, of cross sectional area 120 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.

Supply and fix in repair stay assembly of 20 mm dia stay rod including taking out old stay assembly of any size complete all as specified and directed by Engineer-in-Charge.

Material and labour for cable jointing kit for 11 KV (earthed) heat shrinkable, out door terminitation suitable for cross sectional area 95 Sqmm, 3 core aluminium conductor XLPE Cable including jointing material and accessories including earth work (excavation in trenches in any type of soil, return filling in layers not exceeding 15 cm thick and removing excavated material not exceeding 50 mtr) complete all as specified and directed by Engineer-in-Charge.

Material and labour for cable jointing kit for 11 KV (earthed) heat shrinkable, out door termination suitable for cross sectional area 120 to 185 Sqmm, 3 core aluminium conductor XLPE Cable including jointing material and accessories including earth work (excavation in trenches in any type of soil, return filling in layers not exceeding 15 cm thick and removing excavated material not exceeding 50 mtr) complete all as specified and directed by Engineer-in-Charge.

Material and labour cable jointing kit for 11 KV (earthed) heat shrinkable, out door termination suitable for cross sectional area 240 to 300 Sqmm, 3 core aluminium conductor XLPE Cable including jointing material and accessories including earth work (excavation in trenches in any type of soil, return filling in layers not exceeding 15 cm thick and removing excavated material not exceeding 50 mtr) 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 joint suitable for cross sectional area 95 Sqmm, 3 core aluminium conductor XLPE Cable including jointing material and accessories including earth work (excavation in trenches in any type of soil, return filling in layers not exceeding 15 cm thick and removing excavated material not exceeding 50 mtr) 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 joint suitable for cross sectional area 120 to 185 Sqmm, 3 core aluminium conductor XLPE Cable including jointing material and accessories including earth work (excavation in trenches in any type of soil, return filling in layers not exceeding 15 cm thick and removing excavated material not exceeding 50 mtr) 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 95 Sqmm, 3 core aluminium conductor XLPE Cable including jointing material and accessories including earth work (excavation in trenches in any type of soil, return filling in layers not exceeding 15 cm thick and removing excavated material not exceeding 50 mtr) 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 120 to 185 Sqmm, 3 core aluminium conductor XLPE Cable including jointing material and accessories including earth work (excavation in trenches in any type of soil, return filling in layers not exceeding 15 cm thick and removing excavated material not exceeding 50 mtr) 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

Supply and laying rubber mat in sub station of size 1.00 mtre x 2.00 mtr x 19 mm thick complete all as specified and directed by Engineer-in-Charge.

Supply, fixing and testing 11 KV HT ceramic bushing of transformer 11 KV / 433 volt indoor / outdoor of various capacity including taking out old bushing complete all as specified and directed by Engineer-in-Charge.

Supply, fixing and testing 11 KV HT ceramic bushing LT side of transformer 11 KV / 433 volt indoor / outdoor of capacity upto and including 160 KVA complete including taking out old bushing complete all as specified and directed by Engineer-in-Charge.

Supply, fixing and testing 11 KV HT ceramic bushing LT side of transformer 11 KV / 433 volt indoor / outdoor of capacity 160 KVA to 300 KVA complete including taking out old bushing complete all as specified and directed by Engineer-in-Charge.

Supply, fixing and testing 11 KV HT bushing rod of brass both ends threaded including nut, check nut and washer of transformer 11 KV / 433 volt indoor/out door of various capacity including taking out old bushing rod complete all as specified and directed by Engineer-in-Charge.

Supply, fixing and testing bushing rod of brass both ends threaded including nut, check nut and washer LT side of transformer 11 KV / 433 volt indoor/out door capacity upto and including 160 KVA including taking out old bushing rod complete all as specified and directed by Engineer-in-Charge.

Supply, fixing and testing bushing rod of brass both ends threaded including nut, check nut and washer LT side of transformer 11 KV / 433 volt indoor/out door capacity 300 KVA to 500 KVA including taking out old bushing rod complete all as specified and directed by Engineer-in-Charge.

Supply and fix in replacement of Silica gel breather assembly with 250 grams silica gel cristal suitable for any capacity / model of transformer to air column of conservator tank complete all as specified and directed by Engineer-in-Charge.

Supply and fix in replacement of Silica gel breather assembly with 500 grams silica gel cristal suitable for any capacity / model of transformer to air column of conservator tank complete all as specified and directed by Engineer-in-Charge.

Supply and fix in replacement of Silica gel breather assembly with 750 grams silica gel cristal suitable for any capacity / model of transformer to air column of conservator tank complete all as specified and directed by Engineer-in-Charge.

Taking down carefully switch air break, gang operated, triple pole complete and Supply, installing, connecting and commissioning switch air break gang operated, triple pole, vertical mounted, out door type of 12 insulators, mechanically operated, mounted on insulators and steel frame, with operating mechanism and operating rod of 25mm bore GI pipe heavy grade worked from ground level, with locking arrangements including brass pad locks with key (Make. Godrej/Harrison/Link) for current rating 400 Amp at 11 KV, complete with drop out fuse set fuse carrier and fuse elements having 100 Amp at 11 KV connected with new ACSR conductor complete all as specified and directed by Engineer-in-Charge. Note :- Quoted rate shall be deeemed to include the cost of steel frame, GI pipe of suitable length including drop out fuses.

Taking down carefully switch air break, gang operated, triple pole complete and Supply, installing, connecting and commissioning switch air break gang operated, triple pole, vertical mounted, out door type of 12 insulators, mechanically operated, mounted on insulators and steel frame, with operating mechanism and operating rod of 25mm bore GI pipe heavy grade worked from ground level, with locking arrangements including brass pad locks with key (Make. Godrej/Harrison/Link) for current rating 200 Amp at 11 KV, complete with drop out fuse set fuse carrier and fuse elements having 100 Amp at 11 KV connected with new ACSR conductor complete all as specified and directed by Engineer-in-Charge. Note :- Quoted rate shall be deeemed to include the cost of steel frame, GI pipe of suitable length including drop out fuses.

Material and labour for painting of HT / LT steel poles 9 / 11 metre long with cross arms, clamp of any length and shape, ante climbing devices etc with two coat of aluminium paint including preparation of the existing surface including marking pole numbers like (HT-101) in a 150mm dia yellow circle & provide three blue & two white bends of width 30 cm by fluorescent paint, from top of PCC pedastal of pole complete all as specified and directed by Engineer-in-Charge.

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 & fixing in replacement lightning arrestor explusion type, self supporting class type suitable for 11/12 KV grade, complete with all fitting for outdoor discharge capacity 65 KA complete (set of three) including all clamps, nuts, bolts washers and connecting to earth with 32 x 6 mm GI strip including dismantling of existing lightening arrestor complete all as specified and directed by Engineer-in-Charge.

Supply and fix disc type insulator, porcelain, vitreous, whigte, brown or green 145mm height, and 255 mm dia ball and socket type two in series assembly for tension with tension clamps for conductors, including bolts, nuts and washers working pressure 11000 volts grade including dismantling of unserviceable existing insulator of any size complete all as specified and directed by Engineer-in-Charge.

Supply and fix pin type porcelain , vitreous, whigte, brown or green insulator including one galvanised mild steel spindle, two galvanised iron washers and one galvanised iron nut, 150 mm height and 150 mm dia including section of straps of 38 x 5 mm size 20 mm dia of bolts, nuts and washers suitable for working pressure 11000 Volts grade including dismantling of unserviceable existing insulator of any size complete all as specified and directed by Engineer-in-Charge.

Restringing of HT overhead line conductor comprising of three run ACSR conductor and two run GI earth contunity conductor after opening from insulators, including restraining same and winding on insulator with proper size of binding wire upto permissible sag including cutting, trimming and vending tree branches along HT over head lines, after arranging electrical shutdown , including taking all precautions while working on lines using own T&P by the contractor complete all as specified and directed by Engineer-in-Charge. Note :- Quoted rate shall be deem to included the cost of winding wire and replacement of insulator if damaged during restraining of conductor. (ii) Insulator shall be paid separately as supply only under respective item of this schedule. (iii) Restringing / Cutting/trimming of branches shall be done after obtaining necessary shut down in writing by the Engineer-in-Charge to avoid any casualty.

Rewinding/Reinsulation of LT / HT coils of any size and type of transformer including cleaning the burnt out insulating materials, brazing and rewinding with appropriate turns and size of super enamelled copper winding wire including filling insulation paper etc all as specified in particular specifications. Note :- (i) Burnt coils shall be handed over to the contractor by the Engineer-in-Charge through issue voucher for rewinding giving reference of transformer i.e. make Capacity, MES/SM number of transformer etc. (ii) Weight, number of turns, gauge, insulation of winding wire shall be as per OEM. ((iii) Work of rewinding work shall be carried out throught OEM or their authorised vendor only. (iv) Old winding copper wire shall be contractor property and necessary amount as per schedule of credit shall be deducted from the contractor due payment.

Supply & fixing in repair gasket set of synthetic rubberized cork sheet 10 mm thick for transformer top lid cover and HT/LT side transformer bushes suitable for transformer of capacity upto 160 KVA complete all as specified and directed by Engineer-in-Charge.

Supply & fixing in repair gasket set of synthetic rubberized cork sheet 10 mm thick for transformer top lid cover and HT/LT side transformer bushes suitable for transformer of capacity 200 KVA complete all as specified and directed by Engineer-in-Charge.

Supply and fix steel tubular swaged poles 10 meters long complete with MS base plate of size 300 mm x300mm x 6 mm thick ,finial taper plug,bolts,nuts and screws as specified type 410 SP-31 Including providing 3 Nos of 30cm wide circular bands with Aluminium & blue paint starting from plinth level at a gap of 30cm in between 2 bands and numbering of poles shall be done with synthetic enameled painted letter of shape & size complete over a coat of primer and one under coat and one finishing coat of aluminium paint including taking out old damaged pole complete all as specified and directed. Note - (i) Poles shall be procured directly from the manufacturer mentioned in tender documents. (iii) Material and labour for painting of pole externally with one coat of black bituminous paint (up to planting depth) and above plinth block concrete collar with two coat of aluminium paint over a coat of red oxide primer including preparation of surface including painting of 30 cm wide bands 3 Nos with synthetic enamel paint of appropreate colour in alternate layer up to the hight of 1.5 mtr above plinth block.

Supply, installation, testing and commissioning 33 KV current transformer outdoor type (CTs) suitable for SF6 VCB single pole 3 core cast epoxy type of 15 VA burden, class 1, 5 P 10 and PS having turn ratio 100 - 50/5 Amp complete all as specified and directed by Engineer-in-Charge.

Supply, installation, testing and commissioning in repair PT 11 KV/110 Volt suitable for existing 11 KV SF6 VCB indoor type air cooling complete all as specified and directed by Engineer-in-Charge.

Supply, installation, testing and commissioning in repair PT 33 KV/110 Volt suitable for existing 33 KV SF6 VCB out door type air cooling complete all as specified and directed by Engineer-in-Charge.

Material and labour for defect rectification in HT 11 KV cable laid in trenches by locating fault with the help of electronic fault locator machine comprising of surge generator pules ECHP fault location with high frequency distance calculator etc. Excavation in any type of soil strata exposing the cable fault removal of deteriorated position of cable treating of cable and keeping the same ready for jointing work for cables of sizes upto 300 Sqmm 3 core complete all as specified and as directed by Engineer-in-Charge. Note :- The fault locator equipment will be brought at site within two hours of instruction received from Engineer-in-Charge

Disconnecting and taking out existing HT 33 KV C&R panel from housing and cleaning and overhauling the machanical parts including oiling, replacement of unserviceable trip coil and checking of all relay and making functional and reassembling the same after replacement of unserviceable parts as required and make the panel serviceable including making all electrical connection and testing complete complete all as specified and as directed by Engineer-in-Charge. Note :- (i) Servicing, checking and caliberation of VCB shall be carried out by the representative of OEM only using primary and secondary injection kit. (ii) All the test rocord for proper tripping of CTs, raising and lowering operation mechanism and proper tripping system of over current and earth fault relay shall be mentioned and signed by the contractor, Engineer-in-Charge and representative of OEM shall be produced before allowing payment to the contractor.

Taking out existing PVC / XLPE cable from trench, pole etc, cutting faulty / burnt cable for repair and relaying / re fixing on existing position complete all as specified and as directed by Engineer-in-Charge. Note :-(i) Unit quoted rate shall be deemed to include the cost of earth work including earth work (excavation in trenches in any type of soil, return filling in layers not exceeding 15 cm thick and removing surplus excavated material not exceeding 50 mtr), Aluminimum lugs, insulation tape.

Boring of holes under road, pavement, hard standing by manually without damaging the surface for 80mm bore GI pipe complete all as specified and as directed by Engineer-in-Charge. Note :-(i) Depth of hole shall be 1.00 to 1.50 metre below the top surface of road / pavement / hard standing /Path. (ii) Pipe shall be measured and paid for separetely under respective item of this schedule.

Supply only breaker charging motor including gear assembly as per sample suitable for 220/110 volt AC of 11 KV VCB (SF6) panel.

Supply only 12 volt battery including charging assembly (Power pack) as per sample suitable for 220/110 volgt AC of 11 KV VCB (SF 6).

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Hindustan Power Corporation