Bharat Sanchar Nigam Limited-BSNL has published Tender For Attending Day To Day Faults, Repairing And Maintenance Of Outdoor Type Transformer Substations Under Sambalpur Ba (Phase-Ii, For The Year 2023-24). Submission Date for this Tender is 06-04-2024. Transformer Supply Tenders in sambalpur Odisha. Bidders can get complete Tender details and download the document.
| Sl. No. | Item Description |
| 1 | Attending to break down calls, physical inspection of Substation accessories, overhead lines, feeder panels, meter box etc. to find out thefaultsand taking corrective measures for restoration of power supplyi/c minor repairing works i/c replacement of insulators, LAs, jumpers, lugs/sockets etc. in coordination with supply authority etc. as required. |
| 2 | Liaison with different units of the supply authority i.e. Field units, MRT units, Division office etc.forobtaining shut down of 11KV line, breaking of meter sealif required to carry out the major repairing and maintenance works of the Transformer substation/replacement/rewinding and re-installation of the repaired Transformer, re-energisation, testing and re-commissioning etc.as required. |
| 3 | Thorough servicing of AB Switch, adjustment of bearings, male/female contacts, lubricating of movingitems i/c replacement ofminor defective parts like nuts, bolts, clamps, wire braided copper strips and checking the functional operation,etc.as required. |
| 4 | Replacement of the following defective spare parts ofthe transformer substation by new one i/c fitting, connectionetc. as reqd.(a) Male contact and Female contacts made of hard drawn copper for 200 Amps air break switch with wire braided strip etc. comprising of 3nos per set. |
| 5 | Rotor mechanism for 200 Amps air break switch. |
| 6 | Square/round bar for AB switch (Horizontal unit) |
| 7 | 11KV Post Insulator for 200Amps AB switch/ HG fuse unit |
| 8 | Operating Handle made of 25/32mm Medium class GI pipe with wire braided copper strip |
| 9 | Heavy duty operating pipe for air break switch i/c fabrication etc. as required. |
| 10 | Earthing with G.I. earth plate 600 mm X 600 mm X 6 mm thick including accessories, and providing masonry enclosure with cover plate having locking arrangement and watering pipe of 2.7 metre long etc. with charcoal/ coke and salt as required. |
| 11 | Replacement of damaged breather for 25 KVA 11KV/0.415KV transformer by a new one with dry silica gel etc. as required. |
| 12 | Replacement of faulty/damaged pin insulators by new oneof 11 KV grade pin type insulator with large steel head G.I. pin, nuts, washers on existing HT pole/ DP structure etc. complete as required. |
| 13 | Replacement of faulty/damaged discinsulators by new one of 11 KV, 45 KNporcelain disc insulator with galvanized insulator fittings, ball and socket type and complete with galvanized strain clamps, bolts, nuts, washers etc. as required. |
| 14 | Replacement of faulty Lightening arrestorsby newones of nonlinear resistor typelightning arrestor suitable for 3 wire, 11 KV overhead lines with rated voltage 9 KV (rms) with a nominal discharge current rating of 5 KA and complete with galvanized clamping arrangement, G.I. bolts, nuts, washers etc. as required, comprising of 3nos per set. |
| 15 | Replacement of damaged and unserviceable AB switch of the following typeby new one of11 KV, off load, single break, triple pole, horizontal type, gang operated air break switch having 2 nos. 11 KV post type insulator per phase complete with galvanized channel iron base, arcing horns, 25 mm dia. 6mtr. long GI pipe, tinned copper wire braided flexible earthing wire & operating handle with locking arrangement etc. complete as required.(a) 200 A Horizontal type |
| 16 | (b) 400 AHorizontal type |
| 17 | (c) Fabrication of AB switch base channel for converting Vertical type to Horizontal type AB switchetc complete as required. |
| 18 | Replacement of damaged and unserviceable DO/HG fuse units by new one of 3 phase, 11 KV outdoor type Horn Gap Fuse unit having 2 nos. 11 KV post type insulator per phase complete withchannel, cu-wire etc. as required. (one set comprising 3 units). |
| 19 | Supply & drawing of 55 sqmm. AAA conductor for overhead line and DP structures i/c binding with insulators etc. complete as required. |
| 20 | Replacement of faulty/burnt out HT cable by supply & Laying of new 3 core, 35sqmm HT XLPE insulated Cable of6.6 KV (UE)/11KV (E), Stranded compact circular aluminium conductor, conductor screen with extruded semiconducting compound, XLPE insulated, insulation screening with extruded semi conducting compound in combination with copper tape (0.3 KA for 1 sec), cores laid up, inner sheath of PVC tape, galvanized flat steel strip armoured and overall PVC sheathed confirming to IS 7098/PART-II-1985 with latest amendments. |
| 21 | Dismantling of existing faultyHT cable(3 core, 11 KV grade XLPE insulated ,galvanised steel armoured earthed type 35 sqmm stranded Al conductor power cable overall PVC sheated on overhead)along with one no 55 sqmm AAAconductorload bearer wirefor necessary meggering /rectification of fault i/cdrawing /laying (i/c cost of AAA conductor if required) etc complete as required. |
| 22 | Replacement of faulty 11KVoutdoor type cable end terminationsby new one ofheat shrinkabletype complete with all accessories including lugs suitable for 3 core, 35 sqmm, XLPE aluminium conductor cable of 11 KV grade as required. |
| 23 | Replacement of faulty/burnt outstraight through cable jointsby new one of outdoor typeheat shrinkable type complete with all accessories including lugs suitable for 3 core, 35 sqmm, XLPE aluminium conductor cable of 11 KV grade as required. |
| 24 | Rewiring of the DP structure of Transformer Sub Station with 55sqmm AAA /50sqmm insulated Al.conductor stranded cable with al. Lugs/sockets, binding with post insulators etc. complete as required. |
| 25 | Replacement of faulty/burnt out cables by new one including Laying offollowing sizesPVC insulated & PVC sheathed Aluminium conductor armoured cable 650/1100 V. grade confirming to IS : 7098 (Part-1) 1988i/c transportation to respective sites etc. as required. (a) 4 core 16 sqmm |
| 26 | 4 core 25 sqmm |
| 27 | Replacement of damaged MV cable end terminationswith brass compression gland and aluminium lugs for following size of PVC insulated and PVC sheathed / XLPE aluminium conductor cable of 1.1 KV grade as required. (a) 4 X 16 sq. mm (28mm) |
| 28 | 4 X 25 sq. mm (28mm) |
| 29 | Replacement of thedefective parts/components by new ones of following sizes & ratingsaluminium/copper sockets/lugsforPVC sheathed / XLPE aluminium/copper conductor cable of 1.1 KV grade i/cfixing/crimpingetc. as required. (a)16/25 sqmm Al socket. |
| 30 | 35 sqmm Al socket. |
| 31 | 55 sqmm Al socket. |
| 32 | Replacement offaulty MCBs/SDFUs/Change over switchesby new ones of following ratings after dismantlingthe old defective ones, fixing, connection & testing etc. as required. (a)63 Amps 415 volts TPN SDFU with HRC fuses (open execution type). (Make: L&T FN type, /Havells / L & T) . |
| 33 | 63 Amps 415 volts TPN SDFU in Sheet steel enclosure with HRC fuses. (Make: L&T FN type, /Havells / L & T) . |
| 34 | 63Amp 4-pole on load change over switch open execution type (Make: HPL Socomec /Havells / L & T) . |
| 35 | 63Amp 4-pole on load change over switch in sheet steel enclosure , front handle type (Make: HPL Socomec /Havells / L & T) . |
| 36 | 63Amps 415 volts 4 pole MCB (Class-C) |
| 37 | 6-32A SP MCB (Class-C) |
| 38 | 63 Amp porcelainfuse unit with base & carrier. |
| 39 | Dismantling the following ratings faulty transformer from the existing D.P. structure/Plinth & installation of standby/repaired transformer i/c testing and commissioning, recording the required parameters etc. by qualified staff, arranging required tools & plant with proper precautionary measures etc. as required. (a) 25 KVA, 11KV/0.415KV, 50 Hz Aluminium wound oil cooled Transformer |
| 40 | Repairing of 25 KVA Aluminium/copper wounded transformerat factory/workshop by dismantling the faulty transformer, re-insulating the windings, heating, reassembling i/c replacement of gaskets, nuts & bolts, washers, carry out factory tests etc. complete as required. (Rewinding of Transformer is not in the scope of this item) |
| 41 | Repairing of 25KVA Aluminium/ copper wounded transformer at site i/c opening top cover, checking the bush, inter connectionswires/strips from bushings to transformer windings, tightening the connections, etc.as required. (Rewinding of Transformer is not in the scope of this item) |
| 42 | Rewinding of the HT windings ofthe following ratings Oil immersed Distributionclass Transformerwith superior grade andsuitable size Double paper coveredTransformer winding conductor , providingre-insulation of LT winding etc. includingdismantling the transformer parts i.e. conservator tank, terminal boxes, bushings, removing the core and windings from the tank, draining of transformer oil, cleaning of tank,reassembling the core & windings and all the aforesaid parts after rewinding/repairing but excluding transformer oil, replacement of gaskets, worn out nuts, bolts and washers/cork washers etc, heating in heat chamber, carry out factory testsand submission of test reportsetc.complete as required. (The dismantled aluminium winding and other materials can be retained by the agency and credit for the same to be given in the quoted rate of this item)(a) 25 KVA, 11KV/0.415KV, 50 Hz Aluminium wound oil cooled Transformer. (Note - Transformer oil will be measured separately) |
| 43 | Supplying and pouring of transformer oil (IS:325) of suitable make & grade for topping up/replacement of old deteriorated oil etc. complete as required. |
| 44 | Filtration and de-hydration of existing Transformer oil at factory / work shop ( In case of rewinding/repairing of Transformer at factory / workshop), testing of BDV and submission of oil testing reportetc. as required. |
| 45 | Replacement of the following defective spare parts ofthe transformerby new one i/c fitting, connectionetc. as reqd. (a) HV Bushings |
| 46 | LV Bushings |
| 47 | Painting of the transformer body with primer & two coats of weather proofsynthetic enamel paints after scrapping the rust etc complete as reqd. |
| 48 | Providing 25 KVA/63 KVA 11KV/0.415 KV Distribution class star rated Transformer on hiring basis as a stop gap arrangement etc. as required. (BSNL will not be held responsible for occurrence of any faults in the hired Transformer while working at site or any damage or loss occurred to the said Transformer during transportation, loading, unloading and negligence of the agency etc.). (Commencement date shallbe the date of energisation and commissioning at site) |
| 49 | Dismantling the following Equipments of the closed HT supply i/c Poles, AB Switch, HG Fuse, feeder pillar, MS Channel, MS angle etc. by qualified staff, arranging required tools & plant with proper precautionary measures etc. i/c non measurabe items as UDM as required. a) Complete DP Structure(DTR) |
| 50 | b) Joist / PSC Pole |
| 51 | c) HT Cable/ span (minimum 50mtr. Recovery to be paid) |
| 52 | c) HT Conductor with h/w & Insulators/ span |
| 53 | Transportation of spare/new/repaired/standby 25/63 KVA transformer from BSNL office /factory /workshop to respective sites and faulty Transformer from sites to back by using suitable transportation medium including loading and unloading at both ends etc. complete as required. (The rate should be inclusive of toll gate fee/charges wherever applicable, nothing extra will be paid. Distance will be on shortest route only). (a) Distanceup to and including 50 KMs (Up and Down) |
| 54 | Distanceabove 50 KM and up to and including 100 KMs (Up and Down) |
| 55 | Distanceabove 100 KM and up to and including 150 KMs (Up and Down) |
| 56 | Distanceabove 150 KM and up to and including 200 KMs (Up and Down) |
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