JJM Common components Cherpu and Vallaachira Rewinding and servicing of Vijay make 500KVA Oil Cooled Transformer

Amount

Rewinding and servicing

OD267409/2023-2024:Winding of HV Coils for replacing the damaged coils(Y phase) include procurement of the HV Winding conductor as per the appropriate size and standards and design specifications and winding of the same with the exact inner and outer diameters and insulation standards applicable.

OD267410/2023-2024:Reassembling of the core coil assembly includes inserting the newly wound HV coils(Y phase) into the core coil assembly, replacing all the insulation materials with new ones, rebuilding of the top core laminations, re-establishing all internal connections, brazing internal connections, tightening of all nut-bolted joints, etc.

OD267411/2023-2024:Oven-heating of the repaired core-coil assembly includes placing the unit inside the oven and heating it an optimal temperature in order to remove the traces of moisture and old oil from the unit and until it achieves the required insulation resistance (IR) values which shall be checked and confirmed by testing with the insulation resistance megger.

OD267412/2023-2024:Re-tanking of the core-coil assembly into the tank includes thorough cleaning of the entire tank including conservator and radiators to remove all dirt, impurities and remains of flashed oil, checking of the tank for any abnormalities,. Inserting the core-coil assembly into the tank and properly bolting it inside the tank, reconnection of HV coil connections to the OLTC, changing of gasket & silica gel breather.

OD267413/2023-2024:Fabrication and fixing of HV &LV cable box with CRCA sheet of thickness 3 mm with Gland plate with dimension 900mmx600 mm x400 mm and Marshalling box with 2 mm powder coated CRCA sheet, having size 300mmx300 mm x200 mm including all fabrication, conveyance and fixing charges etc complete.

OD267414/2023-2024:Supply and fixing of new Winding temperature indicator and Oil temperature indicator with relays by removing the old damaged WTI and OTI units, including all cost of indicators and relays etc complete

OD267415/2023-2024:Full servicing of OLTC ( Mechanical operations only)-checking and correcting of gear assembly, checking and correcting of belt, cleaning of internal contact, greasing of gear assembly, resistance checking and general cleaning etc , including all cost of spares, labour charges etc complete.

OD267416/2023-2024:Full painting of Transformer

OD267417/2023-2024:Charges for filtering oil of transformer 500 KVA 11KV/433V, 50Hz , oil quantity 900 ltrs (approximate) taking samples for conducting the initial test of oil for the record to compare with improved value after filtration provide the power supply to the unit, connect the unit to the transformer tank, heat the oil up to 80-85 deg.Centrifuge the oil to extract heavier foreign bodies and circulate the hot oil through the transformer.including all labour charges etc complete.

OD267418/2023-2024:Supplying new heavy duty high insulated new Transformer oil for top up level in the conservator tank

Dismantling, Repairing, Supply, and Re installation

OD267420/2023-2024:Dismantling of damaged 400A TPN SDF Incomer switches of SSB 1 and SSB 2

OD267421/2023-2024:Dismantling of damaged 315A TPN SDF Outgoing switches of SSB 1 and SSB 2

OD267425/2023-2024:Switch alignment correction, busbar dismantling, switch chamber repairing, and cleaning of SSB 2

OD267426/2023-2024:Switch alignment correction, Switch chamber repairing, and cleaning of SSB 1

OD267427/2023-2024:Supply and fixing of 400A, TPN, SDF, with door handle assembly as incomer for SSB 1

OD267428/2023-2024:Supply and fixing of 400A, TPN, SDF, with door handle assembly as incomer for SSB 2

OD267429/2023-2024:Supply and fixing of 315A, TPN, SDF, with door handle assembly as outgoing for SSB 1

OD267430/2023-2024:Supply and fixing of 315A, TPN, SDF, with door handle assembly as outgoing for SSB 2

OD267431/2023-2024:Supply and fixing of 400A HRC Fuse links

OD267432/2023-2024:Supply and fixing of 250A HRC Fuse links

OD267434/2023-2024:Dismantling of damaged star delta starters of No:2 flash mixer machine, and No:1 screw type air compressor

OD267435/2023-2024:Supply and fixing of 32A AC3 duty contractor for Star delta starters

OD267436/2023-2024:Supply and fixing of 14 to 23A overload relays contractor mound type

OD267437/2023-2024:Rewiring of star delta starters with re-installation of contractors and overload relays

OD267438/2023-2024:400A, TPN, AL, Busbar replacement of SSB2

TONY P THEKKINIYATH

Bidder Name

TONY P THEKKINIYATH

SRI ROYAL ELECTRICALS