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Eligibility, documents, scope, Go/No-Go checksEligibility, required documents, scope of work and Go/No-Go checks for this tender, in one click.
Tender Value
₹13.0 L
EMD Value
₹25,960
Closing Date
29 Oct 2026, 4:00 pm
Eligibility, documents, scope, Go/No-Go checksEligibility, required documents, scope of work and Go/No-Go checks for this tender, in one click.
EE(E)M33KV
33 KV ESS KIDWAI NAGAR (WEST) NEW DELHI
Urgent Repair and Overhauling of Faulty OLTC of Power Transformer PTR 1 BHEL Make at Vidyut Bhawan New.
2026_NDMC_300076_1
13/EE(E)M33KV/2026-27/3RD
Open Tender
Electrical Works
Percentage
30 days
ESS VIDYUT BHAWAN
Please refer Tender documents.
2 documents required · 2 mandatory
₹0
₹25,960
Yes
15 Oct 2026
15 Oct 2026
29 Oct 2026
15 Oct 2026
29 Oct 2026
15 Oct 2026
This is a percentage-rate BOQ. The schedule below shows estimated quantities and rates. Bidders quote a single percentage above or below the total estimated cost.
| Sl No | Description | Qty | Unit | Est. Rate | Est. Amount |
|---|---|---|---|---|---|
| 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 tap
positions 1 to 17 and 17 to 1. | 1 | Each Job | 3,00,000 | ₹3,00,000 |
| 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 transformer
with glossy paint. | 1 | Each Job | 6,50,000 | ₹6,50,000 |
| 3 | Testing & Commissioning of 50 MVA
power Transformer Pre-commissioning
electrical 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 | 1 | Each Job | 1,50,000 | ₹1,50,000 |
| 4 | ADD: GST @ 18% | 1 | Each | 1,98,000 | ₹1,98,000 |
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details.html
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Tendernotice_1.pdf
PDF • 1.88 MB
BOQ_400470.xls
BOQ • 0.23 MB
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