Purvanchal Vidyut Vitaran Nigam Limited Tender
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Purvanchal Vidyut Vitaran Nigam Limited - PUVVNL Tender
Eprocure
Opening Date11 Apr 2020
Closing Date20 Apr 2020
Tender AmountRefer Documents
Costs
EMD
₹ 6,000Document Cost
₹ 1,180Tender Fee
Refer Documents
Summary
Repairing Of 10 Kva Damaged Transformer
Description
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Contact
Tender Id
2020_PVVNV_457721_1Bid Award Id
ViewTender No
194/EWSC(V)/19-20Tender Authority
Purvanchal Vidyut Vitaran Nigam Limited ViewPurchaser Address
-Website
http://http://puvvnl.up.nic.in/
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Documents
BOQ Items
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10KVA
400
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Detanking of Shell core and coil assembly , checking of transformer winding to assess the extent of damage.
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10KVA
400
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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.
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10KVA
400
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Dismantling of Shell Core and coil assembly. 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.
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10KVA
400
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‘‘Making of complete HV & LV leg Alu. Leg coils identical to original one with same number of turns, weight etc providing super enameled / DPC conductor/ Strip confirming to IS 1971 /53 in place of old and damage coil. Alu.coil, wire strip will be provided by the department. All coil assembly of identical voltage shall be interchangeable without requiring any special equipment. Shell Coil shall be supported between adjacent sections by insulations (flick Paper) Paper, spacers, beamers and other insulations.Rewinding shall be arranged to ensure free circulation of oil to reduced hot spots in winding. The insulation of coil shall be treated with suitable insulating, varnish or equivalent compound to develop the full electrical strength of winding as per original design.
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10KVA
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Assembly of Shell core (Three Limbs) coils and fitting of top 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.
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10KVA
400
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Taking out the Shell core coil assembly of Three Limbs from oven and shifting the same in assembly yard. Connection of HV Coils and LV connection. Tanking out leads Fixation of insulating material wherever necessary. Retightening of Shell 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.
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10KVA
400
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Retanking of Shell core and coil assembly.
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10KVA
400
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Fitting of complete accessories of H.T. & L.V. Bushing and Bushing Rod on H.V. & L.V. side of transformer.
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10KVA
400
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Boxing up of repaired transformer including filling of gaps when necessary.
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10KVA
400
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Refilling of reclaimed transformer oil having sufficient dielectric strength and IR Value. Shifting the transformer to testing yard.
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10KVA
400
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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 and redraging and stacking at identified place in the yard.
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10KVA
400
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Punching and welding of M.S. Plate on outside of transformer of size 100 x 50 mm x 3 mm on outside of transformer body. M.S. plate shall be supplied by the contractor. The detail of punching should be as below: (1) Name of Workshop (2) Name of Contractor (3) Agreement No. & Date.
(4) Date of repair
(5) Capacity
(6) Unique No.
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10KVA
400
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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.
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10KVA
400
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