Tender For Repair And Overhauling Of Faulty Oltc Of Power Transformer (Ptr-1, Bhel Make) At Vidyut Bhawan New.
Tender Value
12.98 Lakhs
Estimated cost
Bid Submission
29 Oct 2026
0 days left
EMD
25960
Bank guarantee accepted
Document Fee
Ref. Documents
Non-refundable
Tender Type
Online
Tender Overview
Organization
Tender ID
Competition Type
NCB
Bidding Type
Tender
Location / State
Delhi → Delhi
EMD Exemption
Available
Quantity
Not Available
Website
Contact Person
Address
Project Description
Tender for Repair And Overhauling Of Faulty Oltc Of Power Transformer (Ptr-1, Bhel Make) At Vidyut Bhawan New.
BOQ
| Sl. No. | Item Description |
| 1 | 50MVA 66/33kV Power Transformer OLTC Dismantling, Repair & Replacement: Draining of oil from OLTC vessel & safe storage in drums, Opening of OLTC head cover, dismantling of gear system, Lifting OLTC insert with mobile crane, Replacement of damaged moving & fixed contacts of R-phase changeover switch, Replacement of top cover & inspection window gaskets, Fixing & alignment of drive shaft, operation check on tappositions 1 to 17 and 17 to 1. |
| 2 | 50MVA 66/33kV Power Transformer overhauling including Transformer Drying & Oil Processing – Dismantling of conservator / Buchholz relay pipeline, Fixing of dummy plates on radiator bank header pipe, replacement of all gasket, Transformer dry-out using vacuum pump & dry-air generator (dew point ≤ -60°C), Two cycles of vacuum drying & dew point monitoring (12 hrs each), Oil filtration, degassing & moisture removal, Filling of tested oil under vacuum, refilling conservator & radiator, Circulation of oil (4 cycles) maintaining ≥ 60°C temp. Painting of 50 MVA power transformerwith glossy paint. |
| 3 | Testing & Commissioning of 50 MVApower Transformer Pre-commissioningelectrical tests:i. Tan Delta, Capacitance on bushings & windings,ii. Turns ratio test on all taps,iii. Magnetic balance at normal tap,iv. Vector group verification,v. Short circuit impedance test,vi. IR/PI measurement (15 sec, 60 sec, 600 sec),vii. Winding resistance measurement (tap 1–9B),viii. Oil quality tests: BDV, Moisture (ppm), Resistivity, DGA,ix. Final inspection & report for energization of Power Transformer |
| 4 | ADD: GST @ 18% Please Enable Macros to View BoQ information |
AI Tender Summary
Tender Timeline
Oct 15, 2026
11:30 IST
Tender Published
Tender notice published.
CompletedOct 29, 2026
17:00 IST
Bid Submission Deadline
Online submission via eProcurement portal.
TodayOct 29, 2026
Bid Opening Date
Technical bids will be opened and evaluated.
TodayTender Documents
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