WBPHE /EE/AMD/NIT 15e / 2022-2023/9

Amount

Repairing and Servicing of 11 KV VCB panel:- a) Isolate and withdrawal of Breaker. b) Opening of Spout, supporting insulator, PT, Spout, Tank Bushing. c) Repalcement rusted nut, bolts. d) Refitting of the above spares. e) Thorough cleaning of Panels. f) All metering circuit connection to be checked and rectified. g) All protection circuit to be checked and rectified. h) All overcurrent and Earth fault relay tripping test to be done. i) Control wiring for indication circuit and alarm circuit to be done. j) Bus-Bar, CT, PT, Cable needs to be checked thoroughly and tested. k) Blocking of Cable hole entry. l) Treatment of HT Cables (i.e. cleaning by thinner, heating by blower to free moisture then voltage insulation improving.) m) Opening of arm. moving contact, cleaning of carbon area.

Supply delivery and fitting fixing of indoor type heatshrinkable termination kits for 3 core 185 sq.mm 11 KV (E) XLPE Al. Ar Cable. Make-M seal/Raychem/Denson/Other Approved Make

Overhauling and Servicing of 630 Amps ACB after opening the breaker and servicing of the existing serviceable spares unit and decarbonizes the all contact with supply of all required materials by engaging skilled service engineer as per direction of EIC.

Supply delivery of Transformer Oil as per IS-335. Make-Power Oil

Supply delivery and fitting fixing of CBI Bushing with all fittings. Make-AEG

Disconnection of Transformer from H.T. Side & L.T. Side with proper protection as per direction of EIC. (For Both 315 KVA Transformer )

Drain out the old transformer oil from the Transformer with proper protection up to the Bushing level as per direction of EIC. (For Both 315 KVA Transformer )

Removal of top cover and inspection cover after removal of conservator tank, bucholze relay part by part after loosening of all the nuts & bolts for detecting any defects as per direction of EIC. (For Both 315 KVA Transformer)

Dismantling of HT & LT Bushing including Cleaning and changing of Conical Washers of all the Bushings etc. (For Both 315 KVA)

Supply and fixing of new Gasket for both 315 KVA Transformer including Tank Top Cover / inspection Cover / HV & LV / Bushing etc.

Placing the top cover and inspection cover and bucholze relay, conservator tank in proper position and tightening of Nuts and Bolts after clean up the surface sludge of core & coil assembly with hot oil through filter machine for315 KVA Transformers as per direction of EIC. (For Both 315 KVA Transformer)

Filling the transformer oil through filter machine by old oil and new supplied oil after filtration to the 315 KVA Transformer engaging skilled and unskilled personal for increasing I.R. value as per direction including hire charges of oil filter machine and oil testing equipment and gen. set and carriage the same from Asansol. To Kendra kottahamdihi H/W site and back as per direction of EIC. (For Both 315 KVA Transformer )

Making necessary connection in H.T. & L.T.side and Testing of the transformer all complete as per direction of EIC. (For Both 315 KVA Transformer)

Supply delivery of following Starter Spares at site:-

Contact Element,SPST-NC 10A, Make:-Teknic

Contact block SPST-NO 10A, Make:-Teknic

Earth Fault monitoring relay, Cat No.- 7UGO861-1BU20. Make-Siemens

On delay timer 3 sec -30 hrs, 240 VAC/24 V DC. Make: - GIC

150A, 3 Pole Power contactor AX150-30 230V-Aux Make : -ABB

Flush head type Push button, for Pump No.-1. Make-Siemens/L&T/Other Approved make

25 sqmm PVC insulated single core Industrial Flexible Cable. Make-Gloster/Havells/Polycab/Mescab/Other Approved make.

Fitting fixing of the above supplied spare after dismantling of the damaged one in the existing place including making necessary control wiring.

Supplying and fixing 240/415 V MCB of Breaking capacity 10kA & C characteristics on din rail of existing DBs and necessary connection. Make-Havells

i) 63A 4Pole MCB

ii) 16A SP MCB

iii) 32A DP MCB

Laying of one No. cable 300 sqmm in underground trench 460mm wide x 760mm average depth, with brick protection on the top of the cable with 8 (eight) Nos. bricks per Mtr. including filling the space between the bricks and cable and also the trench with shifted soil, leveling up and restoring surface duly rammed.

Laying only Cable of 300 sqmm X 3½ core through existing open masonary trench.

Finishing the end of following XLPE/PVC armoured cables by crimping method incl. supplying and fixing solderless socket (Dowels make), tapes, anticorrosive paste & jointing materials : i) 3½ core 300 sqmm cable.

Add. GST@12%

Add. Cess@1%

INDUSTRIAL ELECTRICAL CORPORATION

M/S. Sajahan Chowdhury

ELECTRICAL AND MECHANICAL ENGINEERING CORPORATION