Replacement of faulty 11KV grade HT cables with end terminations for BTS sites at ADASKUPA, ARABAKA and CHAHALI and rewinding and repairing of 25KVA 11KV/0.433KV Transformers and sub stations at SARSARA, KATINGIA and CHARI CHACK under Phulbani

Amount

Physical inspection of sites and Transformer Substation accessories, overhead lines, feeder panels, meter box etc. and checking and testing of Transformers and its associated acccessories, switch gears, HT and LT cables etc. after disconnection of the connections from HT and LT side of the Transformers with suitable testing instruments, detection of faults and list out of materials required / works to be carried out for restoration of power supply etc. complete as required. This will also include the conveyance of required skilled & unskilled man power, tools and tackles etc. as required.

Dismantling of the faulty 11KV grade HT cables from the OH line poles by arranging suitable man powers, tools and tackles etc. after disconnection from Transformer DP Structure and tapping points etc. complete as required.

Replacement of faulty/burnt out HT cable by supply of new 3 core, 35sqmm HT XLPE insulated Cable of 6.6 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.

Laying of one number PVC insulated and PVC sheathed / XLPE power cable of 11KV grade of size up 120sqmm in the following manner:

In the existing RCC/ HUME/ METAL pipe as required.

In the existing masonry open duct as required.

On air i/c supply & binding with 1no 55sqmm AAA Conductor.

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.

Liaison and making coordination with supply authority for checking, testing, obtaining shut down of 11KV line and re-energisation after replacement of faulty HT cable and making at tapping points and at Transformer DP structure etc. as required.

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/0.415KV, 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/0.415KV, 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.

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

HV Bushings

LV Bushings

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

Making 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.

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 100 KM and up to and including 150 KMs (Up and Down)

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

Replacement of the faulty 11KV Post Insulator for 200Amps AB switches/ HG fuse units by new one of ISI marked i/c removal of faulty one and fixing the new one 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.

Rotor mechanism for 200 Amps air break switch.

Operating Handle made of 25/32mm Medium class GI pipe with wire braided copper strip

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.

Liaison and coordination 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, 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.

M/S PRACHI ELECTRICALS