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| 1 | Maintenance / servicing of VCB / RMU 11 KV, 400/ 630 /1200 Amps including removal of VCB trolley, cleaning of all copper male and female contacts, tightening of all connections, checking of all auxiliary contacts, control wiring, servicing of relays, etc. refixing the VCB trolley to its original position including proper setting of manual/motorize operation of VCB, checking/setting of tripping system, etc complete all as specified and directed.Note:- (i)Maintenance to be carried out by authorized technician of OEM.(ii)After completion test certificate shall be furnished. (iii) Calibration ofrelay by injecting High voltage through CTS checking the over load system of VCB upto 90 % rated load and artificial fault creation and setting of relay by 10 to 15 % of rated load removing unserviceable overload and earth fault relay including connection with power pack.(iv) Opening out the trolly checking the operation of VCB mechanically and electrically through shunt trip coil including energizing of springs automatically including checking of TNC switch |
| 2 | Taking down carefully Transformer of 160/250 KVA and above capacity, any make, any type from pole / plinth/ base, disconnecting HT & LT side connections, earthing strip of transformer, supporting angles, cross arm, shifting / transporting transformer carefully from the site to theworkshop opening the top cover of the transformer, bushing, draining of oil from the transformer, lifting thecore complete taking out defective coils from the core, cleaning the tank and reassembling the transformer after carrying out the repairs/replacement of worn out part, ovening the complete unit till to get desired megger value, transporting returning back to the site installing re-commissioning and testing of the transformer at its original place, connecting up HT & LT sides, earthings, supports / cross arms etc complete all as specified and directed.Note :- Spares, rewinding of transformer, reinsulating & heating if required will be measured and paid separately under respective items of BOQ. |
| 3 | Supply and fixing in repair top cover gasket made up of 5 mm thick cork sheet complete all as specified and directed. |
| 4 | Supply and fixingin repair HT bushing, porcelain vitreous brown body 1100 V grade as per IS 3347 complete all as specified and directed. |
| 5 | Supply and fixing in repair LT bushing, porcelain vitreous brown body 1100 V grade as per IS 3347 complete all as specified and directed. |
| 6 | Supply and fixingin repair HT brass studs along with washers for one terminal 11 KV transformer complete all as specified and directed. |
| 7 | Supply and fixingin repair LT brass studs along with washers for one terminal 1100 Volts grade transformers complete all as specified and directed. |
| 8 | Supply and fixingin repair breather assembly complete with silica GEL complete all as specified and directed. |
| 9 | Supply and fixing in repair temp level indicator including its bolts, nuts, gasket etc complete complete all as specified and directed. |
| 10 | M & L for rewinding old / burnt out HT/LT coils by super enamelled copper winding wire / strips of appropriate size of super quality (as per existing material & size of transformer coils) including, insulating, varnishing, heating, keeping coils in position, etc for transformer up to 500 KVA complete all as specified and directed. |
| 11 | M & L for re-insulation of heated / weak LV coils of transformer by super quality insulating materials, heating, varnishing , etc complete to improve IR value etc complete all as specified and directed. |
| 12 | M&L for repair and replacement of core material of transformer capacity upto 200 KVA as per existing make and material complete all as specified and directed. |
| 13 | Taking Down old PT,S&F11 KV singlephase indoor resin cast PT of ratio 11KV/rt 3/110V/rt3 class 1 burden 100va ,insulation level 100KV,Voltage factor 1.2 cont and 1.9 sec for 30 Sec conforming to IS-3156 complete all as per existing specification of PTs complete all as specified and directed. |
| 14 | M&L for proper shutdown of HT feeder from concerned Power House, checking , testing and locating fault of HT OH line including 2 pole/ 4pole structure, HT feeder pillar etc., opening/ disconnecting HT electric connections removal of old Jumpers by cutting old rusted nut bolts and washer, repair and Maintenance of HT GOD on 4 pole / 2 pole structure by providing new nut bolt and lugs of same size etc. Repair to operating mechanism of 11kV air break gang operating capacity by proper oiling greasing to moving parts and set right the alignment of male and female contact for proper working,heating to HT feeder pillar for de moistursing the HT end joint, bus bar and epoxy insulator including making HT feeder serviceable as and when required complete all as specified and directed. |
| 15 | Supply, laying and testing in replacement XLPE, Insulated, armoured electric power cables (heavy duty) 1100 Volts grade with stranded aluminium conductor of size 95 sqmm, 3.5 core in trenches or passing through pipe, fixed to wall / pole and duct etc, including taking out of old unserviceable cable complete all as specified and directed. |
| 16 | Supply, laying and testing in replacement XLPE, Insulated, armoured electric power cables (heavy duty) 1100 Volts grade with stranded aluminium conductor of size 50 sqmm, 3.5 core in trenches or passing through pipe, fixed to wall / pole and duct etc, including taking out of old unserviceable LT cable completeall as specified and as directed by Engr-in-charge. |
| 17 | Supply, laying and testing in replacement XLPE, Insulated, armoured electric power cables (heavy duty) 1100 Volts grade with stranded aluminium conductor of size 16 sqmm, 4 core in trenches or passing through pipe, fixed to wall / pole and duct etc, including taking out of old unserviceable LT cable completeall as specified and as directed by Engr-in-charge. |
| 18 | Supply, laying and testing, in replacement XLPE cable, Insulated ,screened, PVC bedded, galvanized steel strip or wire armoured, electric power cables (heavy duty) 1100 Volts grade with stranded aluminium conductor of size 16 sqmm, 3 core completeall as specified and as directed by Engr-in-charge. |
| 19 | Supply, laying and testing, in replacement XLPE cable, Insulated ,screened, PVC bedded, galvanized steel strip or wire armoured, electric power cables (heavy duty) 1100 Volts grade with stranded aluminium conductor of size 10 sqmm, 3 core completeall as specified and as directed by Engr-in-charge. |
| 20 | Excavation intrenches in soft/loose soil not exceeding 1.5 mtrdeep and not exceeding 1.5 mtrwide for laying of cables, pipes, RCC poles / stays and struts etc and getting out including trimming sides and forming levelledbottom surface all as specified and directed at site. |
| 21 | Returning, filling in, including spreading, watering and well ramming in layers notexceeding 25 cm thick each, in soft /loose soil complete all as specified and directed. |
| 22 | Removing excavated material (soils) n exc. 50m and depositing where directed at a level n exc. 1.5 m above the starting point complete all as specified and directed. |
| 23 | Supplying & layingin repair factory made unreinforced Precast concrete cover of class LV, type 1,flat, size 250 mm x 150 mm x40mm for protection for cable complete all as specified and directed. |
| 24 | M&L for dry sand filling in cable trenches for protection of cables with two layers (15cm and 8cm) below and above cable and punned down to specified thickness complete all as specified and as directed.Note: Punned down thickness (18cm) shall only be measured for payment. |
| 25 | Supplying and laying in replacement synthetic rubber insulated mats 2 mm thick for voltage upto 3.3 kV for electrical purpose as per IS 15652-2006, (superseding IS 5424) suitable for electrical shock safety of sizes 2m x 1m complete all as specified and directed. |
| 26 | M&L for checking of transformer for any leakage and rectify the same by tightening of nut, bolt or replacing broken rubber gasket, drain plug etc. complete all as directed and directed. |
| 27 | Dehydration of transformer oil of transformers 11KV/433 Volt (03 Nos) of different capacities located at CGRA Naliya and ICGS Jakhau by dehydration machine and obtained dielectric strength should be more than 40 KV at 2.5mm gap complete all as specified and directed. |
| 28 | M&L for topping up of transformer oil having dielectric strength not less than 45 KV(at 2.5 mm gap) high voltage as per IS specification of low viscosity complete all as specified and directed. |
| 29 | M&L in replacement of silica gel of transformer breather complete all as specified and directed. |
| 30 | Taking out old unserviceable lightning arrestors , supply and fix lightning arresters, expulsion type complete with all fittings, transmission class, discharge capacity 65 kilo amp suitable for 11KV, 3-Phase, earthed distribution systemcomplete all as specified and directed. |
| 31 | M&L for repairs to existing out door LT panel, removing the unserviceable hinges from doors (1.6mm thick MS), grinding the welded portion, denting and levelling the door, welding suitable new hinges (Approx. 0.50 Kg) to doors including locking arrangement and one coat of synthetic enamel as that of existing colour complete all as specified and directed. |
| 32 | Material and labour for replacement of earthing completewith galvanizedearth plateelectrode in 60 cm x 60 cmx6 mm thick buried directly in ground verticallyat a depth not less than 2.25 meterbelowgroundlevel with top edgeof earth plateat depth not lessthan 1.5 mtrbelow ground level connecting to and including GI strip32 mm x 6 mmby means of GI bolts, nuts, check nuts and washerlight grade40 mm dia GI protectionpipeandconnected to equipment, GIpipe medium grade20 mmdia forwatering an includingfunnel wire mesh, RCCpitcoverand PCC 1;2:4type B-1 including Rocksalt, charcoal, excavationand earth workdisposalof surplussoil shown as plateNo 3 of SSR Part - I2009 and all as specified complete.Note : - Theunitrate quoted shalldeemed to have included for GIprotection pipe, GIearth stripup to 7.5mtr, GI waterpipe, wiremesh , funnel , excavation, RCC pit cover complete. |
| 33 | M&L for Cutting of worn out aluminium cable terminal lugs from the HT/LT cable of any size, crimping of new aluminium cable Lugs and fixing with transformer / LT panel terminal studs including cutting/dressing of cable, excavation, redressing of excavated surface, providing sand cushioning and brick protection as directed. |
| 34 | M&L for cable jointing kit for 1.1 KV grade cable, straight through cold shrink type joint complete with jointing material and accessories suitable for 3.5 core XLPE armoured aluminium conductor cable of size 150 to 185 Sqmm complete all as specified and directed. |
| 35 | M&L for cable jointing kit for 1.1 KV grade cable, straight through cold shrink type joint complete with jointing material and accessories suitable for 3.5 core XLPE armoured aluminium conductor cable of size 70 to 120 Sqmm complete all as specified and directed. |
| 36 | M&L for cable jointing kit for 1.1 KV grade cable, straight through cold shrink type joint complete with jointing material and accessories suitable for 3.5 core XLPE armoured aluminium conductor cable of size 25 to 50 Sqmm complete all as specified and directed. |
| 37 | S&F in repairs MCCB, 200 Amps, four pole, 25 KA, 415 volt adjustable type complete all as specified and directed. |
| 38 | S&F in repairs MCCB, 160 Amps, four pole, 25 KA, 415 volt adjustable type complete all as specified and directed. |
| 39 | S&F in repairs MCCB, 100 Amps, four pole, 16 KA, 415 volt adjustable type complete all as specified and directed. |
| 40 | S&F in repairs MCCB, 63 Amps, four pole, 16 KA, 415 volt adjustable type complete all as specified and directed. |
| 41 | Site clearance around various installations and removing all the vegetations off MD land complete all as specified and directed. |
| 42 | Trimming of tree branches wherever touching to 2/4 pole structure, transformer, VCB, DG upto one meter clear distance and removing of trimmed branches and disposing the debris off MD land complete all as specified & directed.Note:-(i) Any damage caused to the 2/4 pole structure, transformer, VCB & DG due to above will be repaired by contractor at his own expences.(ii) Required T&P like axes, ladder etc shall be provided by the contracor. |
| 43 | Material and labour for painting of the transformer (150 to 350 KVA) by removing old paint by scrapping and providing spray painting with synthetic enamel paint of approved make duly marking / writing MES / SM No.complete all as specified and directed. |
| 44 | Supply and fix On load change over switch of capacity 200 Amps 415V, 4 pole,with metal enclosure mounted on angle iron frame of section 25mmx25mmx5mm with legs mount on PCC on ground all as directed.Note:-Quoted rate shall be inclusive of excavation, PCC and angle iron frame. |
| 45 | M & L for taking down carefully Isolation Transformerof capacity 63KVA capacity, any make, any type from pole / plinth/ base, disconnecting Both side connections, earthing strip of transformer, supporting angles, cross arm, shifting / transporting transformer carefully from the site to the workshop, opening the top cover of the transformer, bushing, draining of oil from the transformer, lifting thecore complete, taking out defective coils from the core, repair/rewinding the same, cleaning the tank and reassembling the transformer after carrying out the repairs/replacement of worn out part, ovening the complete unit till to get desired megger value, transporting back to the site, installing, re-commissioning and testing of the transformer at its original place, connecting up both sides, earthings, supports / cross arms etc complete all as specified and directed. |
| 46 | M&L for re-wiring of existing out door LT panel, removing the old rusted nut bolts,washer, strip ,wire, cleats and lugs by cutting and grinding, replacing the old busbar, wire with new busbar upto 200 Amps duly grout and finished tighting with new nut bolt washer and lugs complete all as specified and as directed. |
| 47 | S & F in replacement GI tubing, light grade, 100mm bore complete with all fittings for cable and earth continuity strip protection laid in trenches/fixed to poles/along wall/under road/across the drain complete all as specified and directed. |
