Replacement of 11KV HT cable with HT joint kits, rewinding of Transformers, Damaged AB switch and HG fuses and rearrangement of HT cable route with associated works at BTS site Bataguda, Janapanka Ghasi, Budha Amba, Makarjhola, Gaudagaon, Budhaguda u

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.

To carry out minor repairing works such as fixing/post insulators/LAs, jumper wires, LT side cable, LT side switch gears, etc.

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.

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.

Replacement of the following defective spare parts of the transformer substation by new one i/c fitting, connection etc. as reqd.

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.

Porcelain Post Insulator with minimum creepage distance 25mm per KV minimum tensile strength 15KN for 200Amps 11KV AB switch/ HG fuse unit/DO fuse units with all accessories.

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.

Having Porcelain 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.

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)

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.

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.

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)

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.

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.

55sqmm Al socket.

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.

25 KVA, 11KV/0.433KV, 50 Hz Aluminium wound oil cooled Transformer

25 KVA, 11KV/0.433KV, 50 Hz Aluminium wound oil cooled Transformer

Supplying and pouring of transformer oil (IS:325) of suitable make & grade for topping up/replacement of old deteriorated oil etc. complete as required.

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 the following i/c testing of BDV and submission of oil testing report etc. as required.

At Transformer repairing Workshop / Factory

Painting of the transformer body with primer & two coats of weather proof synthetic enamel paints after scrapping the rust etc complete as reqd.

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).

Distance above 50 KM and up to and including 100 KMs (Charges for Up and Down)

Replacement of faulty/burnt out cables by new one of 4 core 25sqmm size PVC insulated & PVC sheathed Aluminium conductor armoured cable 650/1100 V. grade confirming to IS: 7098 (Part-1) 1988 i/c transportation to respective sites etc. as required.

Laying 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.

Laying 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.

Laying 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 Duct/Air as required.

Laying 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.

Replacement of damaged MV cable end terminations with brass compression gland and aluminium lugs for4 X 25 sq. mm (28mm) size of PVC insulated and PVC sheathed / XLPE aluminium conductor cable of 1.1 KV grade as required.

Supply and fixing of SMC Junction box of size 200mm x 140mm x 95mm (inside dimensions) with hinged door type including supply and fixing of 1no. 4 pole stud connector with nuts and bolts etc. as required. (Sintex GSJB2014/SS)

Supplying and fixing 63A, 10KA rating, 4 pole 240 V, MCB in the existing MCB DB complete with connections, testing and commissioning etc. as required.

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