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| 1 | Liaison with different units of the supply authority i.e. Division/Sub Division/Section offices/MRT office/E & MR office and field staff etc.for obtaining shut down of 11KV line/LT Line, breaking of meter seal if required to carry out the repairing and maintenance works of the Sub Station and re-energization, testing etc.as required. |
| 2 | To carry out minor repairing works such as fixing/post insulators/LAs, jumper wires, LT side cable, LT side switch gears, etc. |
| 3 | To carry out major repairing works such as rewinding/ replacement/ repairing & overhauling of Transformer, AB switch, DO fuse unit, replacement of HT cable and its end terminations or any other major repairing works of the DP structure & associated overhead lines. |
| 4 | Thorough servicing of AB Switch, adjustment of bearings, male/female contacts, lubricating of moving items i/c replacement of minor defective parts like nuts, bolts, clamps, wire braided copper strips and checking the functional operation, etc.as required. |
| 5 | Replacement of the following defective spare parts of the transformer substation by new one i/c fitting, connection etc. as reqd. |
| 6 | 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. |
| 7 | Porcelain Post Insulator with minimum creepage distance 25mm per KV minimum tensile strength 15KNfor 200Amps 11KVAB switch/ HG fuse unit/DO fuse units with all accessories. |
| 8 | Replacement of damaged and unserviceable AB switch by new one of following type, 11 KV, off load, single break, triple pole, horizontal rotating type, air break switch having 2 nos.post insulator per phase complete with galvanized channel iron base, arcing horns, 32 mm dia. 6mtr / 7mtr. long GI pipe, tinned copper wire braided flexible earthing wire & operating handle with locking arrangement etc. complete as required. |
| 9 | Having Polymeric post insulator, 200A rated outdoor type AB switch, service voltage /rated voltage -11KV rms/12KV rms, 50 Hz, rated short time current 16KA for 1 sec.as per specifications. |
| 10 | Dismantling of faulty and damaged AB switch from the DP structure i/c cutting the base channels/bolts etc. complete as required. (The dismantled faulty & damaged AB switch may be retained by the agency) |
| 11 | 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 (5KN) per phase complete with channel, cu-wire etc. as required (one set comprising 3 units) as per the following type. |
| 12 | Horn Gap Fuse unit with porcelain Insulators-continuous rated current 100A, 50Hz, Service voltage/Rated voltage- 11KV / 12KV rms, minimum creepage distance of insulators 320mm as per the specifications. |
| 13 | Horn Gap Fuse unit with polymer Insulators-continuous rated current 200A, 50Hz, Service voltage/Rated voltage- 11KV / 12KV rms, minimum creepage distance of insulators 320mm as per the specifications. |
| 14 | Dismantling of faulty and damaged DO Fuse / HG fuse unit set from the DP structure i/c cutting the base channels/bolts etc. complete as required. (The dismantled faulty & damaged DO/HG fuse units may be retained by the agency) |
| 15 | Replacement 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. (Make- Polycab/Havells/Equivalent) |
| 16 | Laying of one number PVC insulated and PVC sheathed / XLPE power cable of 11KV grade of size up 120sqmm in the following manner: |
| 17 | On air i/c supply & binding with 1no 55sqmm AAA Conductor. |
| 18 | Replacement of faulty 11KV outdoor type cable end terminations by new one of heat shrinkable type complete with all accessories including lugs suitable for 3 core, 35 sqmm, XLPE aluminium conductor cable of 11 KV grade as required. (Make-Raychem/3M) |
| 19 | Rewiring of the DP structure of Transformer Sub Station with 50sqmm insulated Al.conductor stranded cable with al. Lugs/sockets, binding with post insulators etc. complete as required. |
| 20 | Replacement of the defective parts / components by new ones of following sizes & ratings aluminium/copper sockets/lugs for PVC sheathed / XLPE aluminium/copper conductor cable of 1.1 KV grade i/c fixing/crimping etc. as required. |
| 21 | 55sqmm Al socket. |
| 22 | 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. |
| 23 | 25 KVA, 11KV/0.433KV, 50 Hz Aluminium wound oil cooled Transformer |
| 24 | 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, 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) |
| 25 | 25 KVA, 11KV/0.433KV, 50 Hz Aluminium wound oil cooled Transformer |
| 26 | Supplying and pouring of transformer oil (IS:325) of suitable make & grade for topping up/replacement of old deteriorated oil etc. complete as required. |
| 27 | Filtration and de-hydration of existing Transformer oil at factory / work shop/ at site(In case of rewinding/repairing of Transformer at factory / workshop/site) as per thefollowing i/ctesting of BDV and submission of oil testing report etc. as required. |
| 28 | At Transformer repairingWorkshop/ Factory |
| 29 | Painting of the transformer body with primer & two coats of weather proof synthetic enamel paints after scrapping the rust etc complete as reqd. |
| 30 | 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). |
| 31 | Distance above 50 KM and up to and including 100 KMs (Charges for Up and Down) |
| 32 | Distance above 100 KM and up to and including 150 KMs (Charges for Up and Down) |
| 33 | Distance above 150 KM and up to and including 200 KMs (Charges for Up and Down) |
| 34 | Supply of 9mtrs. long PSC pole (conforming to IS: 1678/ 1998 as amended up to date) with working load 300 Kg. including transportation to site, loading and unloading etc. complete as required. |
| 35 | Supply of 8mtrs. long PSC pole (conforming to IS: 1678/ 1998 as amended up to date) with working load 200 Kg. including transportation to site, loading and unloading etc. complete as required (For Stay). |
| 36 | Erection of PSC pole of following length in cement concrete 1:3:6 (1 cement: 3 coarse sands: 6 graded stone aggregate 40 mm nominal size) foundation including excavation and refilling etc. as required.(a) Above 8.0 meter and up to 11.0 meter |
| 37 | Supplying and erection of stay set complete (galvanized) with 19/20 mm dia X 1.8metres long stay rod, anchor plate of size 45 cm X 45 cm X 7.5 mm, thimble, stay clamps, bow lightener, 7/ 3.15 mm dia G.I. stay wire and strain insulator etc in cement concrete 1:3:6 (1 cement: 3 coarse sand: 6 graded stone aggregate 40 mm nominal size) foundation including excavation and refilling etc. as required. |
| 38 | Supplying and fixing of following sizes Hot dipped Galvanized iron channel / angle /flat /V-cross arms with nuts, bolts and washers, etc. on DP structure / PSC pole Including cutting, welding, drilling holes, fabricating etc. as required. |
| 39 | 100mm x 50mm x 6mm channel |
| 40 | Cleaning of Transformer Substation yard by removing the vegetations, cutting/trimming of trees over the Sub Station and nearby overhead lines etc, complete as required. |
| 41 | Dismantling of the faulty 11KV grade HT cable (Approx-75mtrs) from the OH line poles by arranging suitable man powers, tools and tackles etc. after disconnection from the DISCOM end and BSNL Transformer Sub Station endetc. complete as required. |
