Replacement of Air Break switch,DP jumper cable etc for 25 63KVA Transformer substation in various TE BTS sites of Keonjhar SSA under Dhenkanal BA

Amount

Attending to break down calls, physical inspection of Substation accessories, feeder panels, etc. to find out the faults and taking corrective measures for restoration of power supply i/c minor repairing works i/c replacement of AB switchs, jumpers, lugs/sockets,Feeder panel etc. in coordination with supply authority etc. as required.

Liaison with different units of the supply authority i.e. Field units, MRT units, Division office etc. for obtaining shut down of 11KV line, breaking of seal if required to carry out the major repairing and maintenance works of the Transformer substation/replacement/ re-installation of AB switch, re-energisation, testing and re-commissioning etc. as required.

Dismantling of damaged AB switch,Dpjumpering etc from 25KVA transformer SS,making the site ready by removing the branches of tree & other debries & keeping all the materials in a safe place as per as per the direction of Engineer -in- charge etc as reqd.

Replacement of damaged and unserviceable AB switch by new one of 11 KV,400A, 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.

Replacement of faulty Lightening arrestors by new ones of nonlinear resistor type lightning 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.

Replacement of damaged and unserviceable 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) etc. complete 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.

50/70 sqmm Al socket.

S/F of Sintex box of size 450mmx380mmx300mm for fixing of Cut out /63/100 A 4pole isolator /TPN SDFU ,fixing on pole , S/F of 1no. Neutral link, etc. as reqd.

Replacement of the faulty and burn out MCBs, Isolators etc. by new ones of following ratings MCBs and Isolators ISI marked as per IEC 60947-3 /MCBs 10 kA , C- Curve as per IEC 60947-2 in existing MCBDBs i/c connection testing etc. as required.(Make-Legrand / L&T / Schneider Electric / Siemens/Havells )

63/100Amps 4 pole Isolator

Supplying and fixing of following sizes Hot dipped Galvanised 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.

100mm x 50mm x 6mm channel

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.

Cleaning of the substation yard i/c cutting of small trees, creepers and climber plants by arranging required manpower and tools and plant etc complete as required.

M/S SUBHENDU DASH (BID ID -832901)