Replacement of AB switch, rewinding of Transformers, supply and pouring of Transformer oil, rewiring of DP structure with allied works at Langipalli-II, Manikyapur, Narayanpur, Sankarakhol, Sumandala, Sheragada, Bahadapadar

Amount

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-energisation, testing etc. as required.

To carry out minor repairing works such as pin/post insulators, 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.

11KV Post Insulator for 200Amps AB switch/ HG fuse unit

Replacement of damaged and unserviceable AB switch by new one of 11 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 including 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 per phase complete with channel, cu-wire etc. as required. (one set comprising 3 units) i/c 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)

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.

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.

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.

55 sqmm 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

Rewinding of the HT windings of the following ratings Oil immersed Distribution class Transformer with superior grade and suitable size Double paper covered Transformer winding conductor , providing re-insulation of LT winding etc. including dismantling 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 tests and submission of test reports etc. 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 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 ( In case of rewinding/repairing of Transformer at factory / workshop), testing of BDV and submission of oil testing report etc. as required.

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 up to and including 50 KMs (Charges for Up and Down)

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

Distance above 100 KM and up to and including 150 KMs (Charges for Up and Down)

Distance above 150 KM and up to and including 200 KMs (Charges for Up and Down)

Cleaning of Transformer Sub station yard by removing the vegetations, cutting/treaming of trees over the Sub Station and nearby over head lines etc, complete as required.

Supply of 3X35sqmm + 1X25sqmm AB Cable of XLPE insulation for 3 phase 4 wire 400/250 volts OH line i/c transportation to site etc. as required. The phase conductors shall be of multi stranded aluminum of compacted circular cross section. The aluminum shall comply with IS 8130:1984. The messenger conductor shall be of multi stranded Aluminum Alloy conforming to IS 398 (Part 4) 1994.

Laying / Drawing of 3X35sqmm +1X25sqmm AB Cable on 9mtrs long PSC pole i/c binding with AAA conductors etc. as required.

M/S PRACHI ELECTRICALS (BID ID -797609)