WBPHED/EE/AMD/ NIeT-19 of 2025-2026/3

Amount

Testing, Calibration & configuration of existing substation equipments:-

Cleaning, Servicing & Testing of 11 KV VCB Panel as per fully satisfaction of EIC.

Cleaning, Servicing, Tightness Checking, OTI, WTI, Buchholz Relay, Checking of 250 KVA, 11/0.433 KV Transformer, LT PDB, LT MCC Starter Panel etc.

Supply and delivery of following materials at site(For 3 Panel VCB Repairing):-

25 Amp, spring Return- Lever type Lock with 1-Trip & 1-Close contact switch.(Make:-Kaycee, Type No-BCA01L006K161/N)

Power pack I/P-230 V AC, O/P-110 V DC, 50 Hz.(Make:-Approved make)

200 Watt space heater voltage 230 VAC.(Make:-Recco)

HT Tapes.(Make:-Approved make)

Atfirst removing damaged TNC switch, Power pack from VCB, Space heater also wrapped the HT cables by Tapes properly then damaged one replaced by new one as per direction of EIC.

Transformer Repairing & Overhauling Portion:-

Disconnection of the 250 KVA transformer from H.T. & L.T. side with proper protection by engaging skilled Electrician.(2 Nos of Transformer)

Drain out the old transformer oil from the transfomer up to the bottom level keep the same in an empty drum including supply of empty drum as per direction.(560 Ltrs approx.) (For 2 Nos of Transformer)

Supply of Transformer oil as per IS:335(1993) specification in a sealed drum.(Make:-Servo/Power oil/Transol/approved make)

Supply of 25 mm diaBronze Gate Valve (Hex. Type) (Screwed).(Make:-Zoloto)(For Drainage of Main tank)

Atfirst loosening of cover bolts then removing of Top cover, Inspection cover, H.V. & L.V. Bushings, with conservator tank to cleaning the insides like Cores, Windings etc, removing all kinds of gaskets, oil seals, rings as per direction.(For 2 Nos of Transformer)

Supply of all kinds of Gaskets & Oil Seal supply for HT & LT Bushings, Top Cover, Inspection Cover, Valve etc. of 250 KVA, 11 KV/0.433 KV Transformer.(Make:-Approved make)

Placing the top cover and inspection cover in proper position and tightening of nuts and bolts after cleaning of the surface sludge of core and coil assembly with hot oil through filter machine for 250 KVA transformer, replacing all kinds of gasket those are supplied above, replacing damaged gate valve as per direction of EIC.(For 2 Nos of Transformer)

Filling the transformer oil through filter machine by old oil and new supply oil after filtration to the 250 KVA Transformer engaging skilled and unskilled personnel for increasing IR value as per direction including hire charges of oil filter machine and oil testing equipment and 5 KVA DG set and carraige the same from and back as per direction of EIC.

Making necessary connection of Transformer at HT and LT sides after cleaning,washing tightened up the cable end with cable termination Kit and rapping with new adhesive and insulation tapes,including testing and commissioning all complete as per direction of EIC.(Both L.V. & H.V. Sides of 250 KVA Transformer)

Replacement of moistured silica gel(0.5 Kgs) by new crystals.(For Both Transformer-1 &2)

Charges for Di- electric strength test(BDV Test) of transformer oil.(For Two Nos of Transformer)

Add GST @ 18%

Add CESS @ 1%

M/s. SOMA ENTERPRISE (BID ID -6785684)

MS S G Enterprise (BID ID -6785670)

M/S. SWAPAN BANERJEE (BID ID -6785699)