WBPHED/EE/AMD/NIeT-16 of 2024-2025/11

Amount

Withdrawing of 7.5 HP Submersible pumping machineries from old river bed Tube Well along with Column pipe after disconnection of all pipe line and power line connection with the help of Derrick and Chain Pulley arrangement by engaging skilled technician as per direction of EIC.

Lowering of Submersible pump Motor set along with 80 mm dia Column pipe part by part in the existing Tube Wells with an arrangement of Derrick and Chain Pulley arrangement, making Pipe line connection etc.all complete as per direction of EIC.(1 No Submersible Pump Supplied departmentally)

Making straight through joint between 1.5 mm2 or 2.5 mm2(motor cable) and 3 core X 4 mm2 submersible flat copper cable for extension of motor cable up to required lengh by supplying necessary seal kit to make joints leak proof all complete as per direction.

Making straight through joint of 3 core 10 mm² Al Ar cable with 3 Core x 4 Sqmm submersible flat cable by supplying Ferrul, rubber and other necessary materials to make the joint leak proof.(Without kit)

Transformer Repairing Portion:-

Transportation of the 100 KVA transformers from DP Colony Head Works site to work shop at Asansol by hired vehicle including loading unloading by engaging skilled & unskilled labour to avoid any sorts of damage as per direction of EIC.

Atfirst opening of cover bolts then removing of Top cover with accessories and bushings next dismantling of Primary and Secondary Coil from core, by debrazing of circuit connection as per direction.

Supply of New Core exchange of damaged.

Restaggaring of cores after dismantling of core structure, cleaning & decarbonising of cores, dry out reassembling of magnetic circuit as per direction of EIC.

Supply of Extra thick coated polyester base super enamelled copper wire for primary coils.

Supply of bright annealed DPc strip copper conductor for secondary coils.

Insulating materials for formation of Primary & Secondary coils, assembling of cores,coils of all three phases.

Formation of primary & secondary coils of all 3 limbs.

Assembling of core & newly formed coils with necessary circuit connection.

Cleaning and decabonising of tanks in interior and exterior portion, varnishing of the newly wound transformer, then placed in heat chamber for baking/dry to driven out of moisture, achiving the proper insulation and improve of the IR Value as per direction.

Supply delivery the following materials at site :-

HT Insulator assembling with fittings

LT Insulator assembling with fittings

Gaskets RC 70C

Misc. Hardware

Transformer oil as per IS:335(1993) specification in a sealed drum.(Make- Approved Make)

Refitting of core & winding with necessary connection with bushings and Placing the top cover and inspection cover in proper position and tighting of nuts and bolts for 100 KVA transformer as per direction of EIC.

Filling the transformer oil through filter machine by new supplied oil after filtration to the 100 KVA transformer engaging skilled and unskilled personnel for increasing IR value as per direction.

Final Testing of the transformer going through this parameter like iron loss,copper loss,eddy current loss and also measuring IR value by well calibrated megger as per direction.

Transportation of the 100 KVA transformer from Workshop Asansol to DP Colony Zone-II by hired vehicle including loading unloading by engaging skilled & unskilled labour to avoid any sorts of damage as per direction of EIC.

Add. GST@18%

Add. Cess@1%

M/s. SOMA ENTERPRISE (BID ID -5465311)

EASTERN INDIA SALES AND SERVICE (BID ID -5466331)