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| 2 | Admitted-Finance | Admitted-Finance |
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Tender Value
Refer Docs
EMD Value
₹13,500
Closing Date
17 Jul 2023, 1:00 pmClosed
SE Workshop Varanasi
OFFICE OF THE SUPERINTENDING ENGINEER ELECTRICITY WORKSHOP CIRCLE PURVANCHAL VIDYUT VITRAN NIGAM LTD. 3rd FLOOR NEW BUILDING ,BHELUPUR POWER HOUSE VARANASI
Repairing 250 KVA Aluminium Wounded damaged Transformer at Jaunpur workshop Jaunpur under EWD Varanasi
2023_PVVNV_817742_1
54/EWSC(V)/23-24
Open Tender
Electrical Works
Lump-sum
365 days
Jaunpur
As per tender specification
2 documents required · 2 mandatory
₹3,540
EE EWD Varanasi
₹13,500
19 Jul 2023
4 Jul 2023
17 Jul 2023
4 Jul 2023
17 Jul 2023
4 Jul 2023
Handling and dragging of transformer from stacking yard to repairing hall including opening of top cover plate.
250 KVA Al.
Opening of tap changer connection detanking of core and coil assembly, checking of transformer winding to assess the extent of damage.
250 KVA Al.
Cleaning, removing the rust of tank etc of the repairable transformer and painting of inside of transformer tank with zinc chromate (Yellow) in two coats with spray painting machine. Zinc chromate (Yellow) shall be supplied by the contractor.
250 KVA Al.
Dismantling of core and coil assembly, opening of top yoke core, lamination. Removing of HV and LV Leg coils for assessing its reuse, reuse of major insulating material if possible, checking and recording of physical dimensions of coil.
250 KVA Al.
Reconditioning of minor damaged in LV leg coil/ Strip of transformer. work includes removing of damage part DPC insulation and providing new DPC on same HV coil/LV Strip should be properly cleaned and should be made of same size as of original .
250 KVA Al.
‘‘Making of complete LV leg coils from new/reconditioned DPC Strip of same size, number of turns and dimension as old one.
250 KVA Al.
‘‘Making of complete HV wire from new/reconditioned DPC wire of same size, number of turns and dimension as old one.
250 KVA Al.
Assembly of core and coils and fitting of top yoke and other parts. Replacement of insulation such as press board, craft paper, making support between adjacent section by insulating spacers and wrapping etc. shifting of repaired core coil assembly and placement inside the oven for proper dry out.
250 KVA Al.
Taking out the core coil assembly from oven and shifting the same in assembly yard. Connection of HV Coils and its delta formation, LV connection and its star formation. Fixation of insulating material wherever necessary. Tanking out leads fortap changer contact surface between movable and fixed contacts, tap changer should operate smoothly and there should be no gap between fixed and moving contacts. Retightening of core, coil assembly to match with tank dimension. Clearance between coils, core and tank body to be as per design so that unnecessary losses are avoided. Retanking of core and coil assembly, refitting of tap changer assembly in operating condition and electrical connection of the tap changer.
250 KVA Al.
Dragging out empty tank form yard to repairing hall
250 KVA Al.
Fitting of complete accessories of H.T. & L.V. Bushing and Bushing Rod on H.V. & L.V. side of transformer.
250 KVA Al.
Refilling of reclaimed transformer oil having sufficient dielectric strength and IR Value. Shifting the transformer to testing yard. Refitting of top cover plate, and fixing of rubberized cork sheet, breather assembly after filling of dry silicagel.
250 KVA Al.
Testing the correctness of connection, DVDF, No load, load loss test (where available), High Voltage, impedance voltage, Short Circuit and open circuit test, Voltage ratio on various tap position.
250 KVA Al.
250 KVA Al.
Painting outside of the tank by synthetic enamel paint of smoke grey shade in two coats after providing red oxide primer. Red oxide primer and synthetic enamel paint shall be provided by the contractor.
250 KVA Al.
PRATAP ELECTRICAL INDUSTRIES
SHREEYA ENTERPRISES
tech_eval.pdf
boq_comp_chart.xlsx
xlsx
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