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Attending Day To Day Faults, Repairing , Maintenance Of Outdoor Type Transformer Substations And Rewinding Of 25, 63 Kva, Oil Cooled Transformers With Associated Worksunder Bhubaneswar Ba For The Year 2021-22 Zone-Ii, Bhubaneswar Repairing And Ma, Bhubaneswar BA-Odisha

Bharat Sanchar Nigam Limited-BSNL has published Attending Day To Day Faults, Repairing , Maintenance Of Outdoor Type Transformer Substations And Rewinding Of 25, 63 Kva, Oil Cooled Transformers With Associated Worksunder Bhubaneswar Ba For The Year 2021-22 Zone-Ii, Bhubaneswar Repairing And Ma. Submission Date for this Tender is 04-10-2021. Electrical Maintenance Tenders in Bhubaneswar BA Odisha. Bidders can get complete Tender details and download the document.




Tender Notice

29330811
Attending Day To Day Faults, Repairing , Maintenance Of Outdoor Type Transformer Substations And Rewinding Of 25, 63 Kva, Oil Cooled Transformers With Associated Worksunder Bhubaneswar Ba For The Year 2021-22 Zone-Ii, Bhubaneswar Repairing And Ma
Open Tender
Indian
Odisha
Bhubaneswar BA
04-10-2021

Tender Details

Attending Day To Day Faults, Repairing , Maintenance Of Outdoor Type Transformer Substations And Rewinding Of 25, 63 Kva, Oil Cooled Transformers With Associated Worksunder Bhubaneswar Ba For The Year 2021-22 Zone-Ii, Bhubaneswar Repairing And Maintenance Of Transformer Sub Stations

Key Value

Document Fees
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EMD
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Tender Value
INR 5.25 Lakhs /-

BOQ Items

Name of Work:Attending day to dayfaults,repairing & maintenance of outdoor type transformer substations andRewinding of 25/63 KVA,11KV/0.415KVoil cooled Transformers with associated works at various Telephone Exchanges, Mobile BTSs, Admn Bldgs and Staff Quarters under BHUBANESWARBA for the year 2021-22 ( Zone-II, Bhubaneswar City and areas under Bhubaneswar SDCA).
Sl. No. Item Description
1Attending 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.
2Liaison 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.
3Thorough 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.
4Replacement of the following defective spare parts ofthe transformer substation by new one i/c fitting, connectionetc. as reqd.
5Male 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.
6Rotor mechanism for 200 Amps air break switch.
7Square/round bar for AB switch (Horizontal unit)
811KV Post Insulator for 200Amps AB switch/ HG fuse unit
9Operating Handle made of 25/32mm Medium class GI pipe with wire braided copper strip
10Heavy duty operating pipe for air break switch i/c fabrication etc. as required.
11Replacement of damaged breather for 25 KVA 11KV/0.415KV transformer by a new one with dry silica gel etc. as required.
12Replacement 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.
13Replacement 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.
14Replacement 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.
15Replacement of damaged and unserviceable AB switch by 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.
16Replacement 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).
17Supply & drawing of 55 sqmm. AAA conductor for overhead line and DP structures i/c binding with insulators etc. complete as required.
18Replacement of faulty/burnt out HT cable by supply 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.
19Laying of one number PVC insulated and PVC sheathed / XLPE power cable of 11KV grade of size up 120sqmm in the following manner:
20Direct in ground including excavation, sand cushioning, protective covering and refilling the trench etc as required.
21In the existing RCC/ HUME/ METAL pipe as required.
22In the existing masonry open duct as required.
23On air i/c supply & binding with 1no 55sqmm AAA Conductor.
24Replacement 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.
25Replacement 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.
26Rewiring 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.
27Replacement of faulty/burnt out cables by new one 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.
284 core 16 sqmm
294 core 25 sqmm
30Laying of one number PVC insulated and PVC sheathed / XLPE power cable of 1.1 KV grade of following size Up to 35sqmm direct in ground including excavation and refilling the trench etc as required, but excluding sand cushioning and protective covering.
31Laying of one number PVC insulated and PVC sheathed / XLPE power cable of 1.1 KV grade of following size Up to 35sqmm in the existing RCC/ HUME/ METAL pipe as required.
32Laying of one number PVC insulated and PVC sheathed / XLPE power cable of 1.1 KV grade of following size Up to 35sqmmin the existing Duct/Air as required.
33Laying and fixing of one number PVC insulated and PVC sheathed / XLPE power cable of 1.1 KV grade of following size Up to 35 sq. mm (clamped with 1mm thick saddle) on wall surface as required.
34Replacement 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.
354 X 16 sq. mm (28mm)
364 X 25 sq. mm (28mm)
37Replacement 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.
3816/25 sqmm Al socket.
3935 sqmm Al socket.
4055 sqmm Al socket.
41Replacement offaulty MCBs/SDFUs/Change over switchesby new ones of following ratings after dismantlingthe old defective ones, fixing, connection & testing etc. as required.
4263 Amps 415 volts TPN SDFU with HRC fuses (open execution type). (Make: L&T FN type, /Havells / L & T) .
4363 Amps 415 volts TPN SDFU in Sheet steel enclosure with HRC fuses. (Make: L&T FN type, /Havells / L & T) .
4463Amp 4-pole on load change over switch open execution type (Make: HPL Socomec /Havells / L & T) .
4563Amp 4-pole on load change over switch in sheet steel enclosure , front handle type (Make: HPL Socomec /Havells / L & T) .
4663Amps 415 volts 4 pole MCB (Class-C)
476-32A SP MCB (Class-C)
48100 Amp porcelainfuse unit with base & carrier.
49Dismantling 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.
5025 KVA, 11KV/0.415KV, 50 Hz Aluminium wound oil cooled Transformer
5163 KVA, 11KV/0.415KV, 50 Hz Aluminium wound oil cooled Transformer
52Repairing of 25/63 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)
53Repairing of 25 /63 KVA 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)
54Rewinding 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, 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)
5525 KVA, 11KV/0.415KV, 50 Hz Aluminium wound oil cooled Transformer
5625 KVA, 11KV/0.415KV, 50 Hz Copper wound oil cooled Transformer
5763 KVA, 11KV/0.415KV, 50 Hz Aluminium wound oil cooled Transformer
58Supplying and pouring of transformer oil (IS:325) of suitable make & grade for topping up/replacement of old deteriorated oil etc. complete as required.
59Filtration 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.
60Replacement of the following defective spare parts ofthe transformerby new one i/c fitting, connectionetc. as reqd.
61HV Bushings
62LV Bushings
63Painting of the transformer body with primer & two coats of weather proofsynthetic enamel paints after scrapping the rust etc complete as reqd.
64Providing 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)
65Making arrangements for inspection and testing of the re-winded transformer by the designated inspector of supply company at factory / workshop and obtaining test certificates and clearance for re-installation and energisation of the said transformer etc. complete as required.
66Transportation 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).
67Distanceup to and including 50 KMs (Up and Down)
68Distanceabove 50 KM and up to and including 100 KMs (Up and Down)
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