Purvanchal Vidyut Vitaran Nigam Limited Tender
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Purvanchal Vidyut Vitaran Nigam Limited - PUVVNL Tender
Electrical Generators And Transformers
Electrical and Electronics
Eprocure
Opening Date3 Oct 2022
Closing Date10 Oct 2022
Tender AmountRefer Documents
Costs
EMD
₹ 96,000Document Cost
₹ 3,540Tender Fee
Refer Documents
Summary
Repairing Of Damage Transformers
Description
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Contact
Tender Id
2022_PVVNV_734459_1Bid Award Id
ViewTender No
73/EWSC(V)/2022-23Tender Authority
Purvanchal Vidyut Vitaran Nigam Limited ViewPurchaser Address
-Website
http://http://puvvnl.up.nic.in/
GEM & Bid Advisory Services
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Documents
BOQ Items
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250 KVA Cu.
20
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400 KVA
245
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500 KVA
2
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630 KVA
40
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800 KVA
2
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1000 KVA
2
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Opening of tap changer connection detanking of core and coil assembly, checking of transformer winding to assess the extent of damage.
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160 KVA
20
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250 KVA Al.
94
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250 KVA Cu.
20
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400 KVA
245
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500 KVA
2
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630 KVA
40
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800 KVA
2
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1000 KVA
2
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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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160 KVA
20
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250 KVA Al.
94
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250 KVA Cu.
20
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400 KVA
245
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500 KVA
2
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630 KVA
40
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800 KVA
2
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1000 KVA
2
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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.
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160 KVA
20
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250 KVA Al.
94
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250 KVA Cu.
20
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400 KVA
245
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500 KVA
2
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630 KVA
40
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800 KVA
2
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1000 KVA
2
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Reconditioning of minor damaged in HV/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 .
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160 KVA
240
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250 KVA Al.
1616.8
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250 KVA Cu.
432
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400 KVA
7350
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500 KVA
74
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630 KVA
1560
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800 KVA
96
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1000 KVA
124
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Reconditioning of LV Leg coils including removing of old double paper covering and cleaning of strip .Then providing double paper covering . Double paper covering other allied materials shall be provided by the contractor.
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250 KVA Cu.
1152
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400 KVA
19600
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500 KVA
192
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630 KVA
4160
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800 KVA
260
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1000 KVA
124
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‘‘Making of complete LV leg coils from new/reconditioned DPC Strip of same size, number of turns and dimension as old one.
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160 KVA
360
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250 KVA Al.
2425.2
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250 KVA Cu.
1008
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400 KVA
17150
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500 KVA
170
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630 KVA
3640
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800 KVA
252
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1000 KVA
310
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Reconditioning of HV wire including removing of old double paper covering and cleaning of wire .Then providing double paper covering . Double paper covering other allied materials shall be provided by the contractor.
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250 KVA Cu.
1968
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400 KVA
27440
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500 KVA
400
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630 KVA
6400
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800 KVA
270
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1000 KVA
500
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‘‘Making of complete HV wire from new/reconditioned DPC wire of same size, number of turns and dimension as old one.
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160 KVA
1100
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250 KVA Al.
6768
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250 KVA Cu.
1722
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400 KVA
24010
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500 KVA
230
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630 KVA
5600
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800 KVA
370
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1000 KVA
478
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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.
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160 KVA
20
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250 KVA Al.
94
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250 KVA Cu.
20
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400 KVA
245
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500 KVA
2
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630 KVA
40
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800 KVA
2
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1000 KVA
2
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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.
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160 KVA
20
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250 KVA Al.
94
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250 KVA Cu.
20
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400 KVA
245
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500 KVA
2
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630 KVA
40
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800 KVA
2
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1000 KVA
2
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Dragging out empty tank form yard to repairing hall
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160 KVA
20
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250 KVA Al.
94
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250 KVA Cu.
20
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400 KVA
245
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500 KVA
2
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630 KVA
40
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800 KVA
2
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1000 KVA
2
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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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160 KVA
20
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250 KVA Al.
94
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250 KVA Cu.
20
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400 KVA
245
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500 KVA
2
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630 KVA
40
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800 KVA
2
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1000 KVA
2
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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.
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160 KVA
20
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250 KVA Al.
94
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250 KVA Cu.
20
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400 KVA
245
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500 KVA
2
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630 KVA
40
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800 KVA
2
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1000 KVA
2
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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 on various tap position.
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160 KVA
20
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250 KVA Al.
94
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250 KVA Cu.
20
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400 KVA
245
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500 KVA
2
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630 KVA
40
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800 KVA
2
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1000 KVA
2
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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 arranged 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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160 KVA
20
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250 KVA Al.
94
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250 KVA Cu.
20
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-
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400 KVA
245
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-
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500 KVA
2
-
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630 KVA
40
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800 KVA
2
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1000 KVA
2
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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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160 KVA
20
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250 KVA Al.
94
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250 KVA Cu.
20
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400 KVA
245
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-
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500 KVA
2
-
-
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630 KVA
40
-
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800 KVA
2
-
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1000 KVA
2
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