Tender For Ttps - Es Circle - Em I - Annual Maintenance Of Transformers, Generator Bus Duct, L.T. Motors (1.2 Kw To 30 Kw), Turbo Generator-Iii And Its Allied Works During The Annual Overhauling Period For The Year 2026-2027.
Tender Value
Ref. Documents
Estimated cost
Bid Submission
12 Oct 2026
8 days left
EMD
3700
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
Tuticorin → Tamil Nadu
EMD Exemption
Available
Quantity
Not Available
Website
Contact Person
Address
Project Description
Tender for Ttps - Es Circle - Em I - Annual Maintenance Of Transformers, Generator Bus Duct, L.T. Motors (1.2 Kw To 30 Kw), Turbo Generator-Iii And Its Allied Works During The Annual Overhauling Period For The Year 2026-2027.
BOQ
| Sl. No. | Item Description |
| 1 | GTs,UATs,UST&SST:Charges for maintenance works in HV Condenser Bushings of 3*84 MVA single phase Generator Transformers and 216 KV LAS: Disconnection of HV jumper connections in Generator Transformers R,Y and B phases, support insulators, 216 kv lightning arrestors and neutral grounding CT, cleaning of HV condenser bushings, support insulators, neutral bushings, 216 kv LAS, connecting leads for MRT testing, restoring of all jumper connections and tightness checking. |
| 2 | Cleaning of Neutral earth resistance of UAT 3A &3B, UST, SST, Generator neutral grounding reactor and Generator neutral grounding Transformer. Assisting for testing, meggering and measuring resistance value. |
| 3 | Charges for maintenance works in 230 KV strung bus of 84MVA three phase Generator Transformer R,Y and B phases: Transportation of ladder from switch yard II, Tightness checking at the joints of jumpers from Generator Transformers , Support insulator and LAS to strung bus, checking the conditions of aluminium clamps and replacing if needed. |
| 4 | Opening the manholes in UAT 3A & 3B, disconnection of primary links at both transformers, cleaning the primary terminal bushings. Opening the LV chamber of UAT 3A & 3B, Cleaning the LV Bushings and bus bars, Tightness checking of LV side cables, After completion of work closing the LV chamber. Assisting during testing. Restoration after completion of the works. |
| 5 | Opening the HV side adopter box cover of the transformer, terminal tightness checking, and cleaning changing of the gasket for top cover and closing. Tightness checking at LV side cables, arrestting of oil leaks if any, assisting for meggering and Buchholz relay testing, external cleaning. Restoration after completion of the works. |
| 6 | Excitation transformerDisconnection of the bus links from HV/LV side, cleaning the transformer, assisting for testing and meggering, LV side cable tightness checking. Restoration of the links after completion of the works. |
| 7 | BUS DUCT PHASE SIDEOpening the manhole in the phase side bus duct and disconnection of the horizontal bus bars in all the three phases. Assisting for testing, meggering. Restoration of the bus bar links after completion of the works and closing the manholes. |
| 8 | BUS DUCT NEUTRAL SIDEOpening the manhole in neutral bus duct and disconnection of the vertical bus bars for all the three phases and cleaning. Assisting for testing, meggering. Restoration of the links and closing of the man holes after completion of the works. |
| 9 | Bus duct man hole opening at all the phases, cleaning of the buses from Generator Phase side to Generator transformer both out side and inside, tightness checking of all the joints, cleaning of the supporting insulators, LAVT Cubicles assisting for testing and meggering. Restoration of covers after completion of the works. |
| 10 | Cleaning and tightness checking of LAVT cubicles, bus bars, dismantling of 3 Nos. 18 KV lightning arrestors from LAVT cubicle Transporting to MRT Lab for testing &restoration after testing. |
| 11 | Generator TransformerCleaning of the Generator Transformer bushings of R, Y & B Phases and other supporting insulators, lightning arrestors and checking of oil leaks, cleaning the top surface of the transformers, tightness checking of the take off jumper joints from strung bus. |
| 12 | Charges for maintenance works in 3*84MVA single phase Generator Transformer R,Y and B Phases: Opening of LV turret covers in Generatortransformers R,Y and B phases, disconection of flexible links in 24 kv busduct to GT LV side, cleaning the transformer, meggering, toppingup of transformer oil if needed and assisting for testing of bucholz relay, surge relay and PRV, restoration of LV side links after completion of works. |
| 13 | Labour charges for H2 gas Regenerative type drier cleaning both A & B chamber internal cleaning ,gasket changing work. |
| 14 | Charges for cleaning of Generator Transformer and its radiators, UAT3A, UAT 3B and its radiators, UST, SST with sodakaram and water during completion of overhauling works. |
| 15 | Generator casing:Charges for Purging of H2 gas in TG casing, |
| 16 | After completion of overhaul purging out of air by Co2 and Co2 by hydrogen to the required pressure as decide by site engineer. |
| 17 | Phase side and Neutrial side bushing cleaning:Opening the manhole at Generator bottom side, removing partition plate at turbine and exciter end. Cleaning inside of Generator. Inspection of generator phase side and neutral side bushing and terminal. Checking gas trap pipe connection at stator water bushings. |
| 18 | Disconnection Generator rotor Slip ring cutting and polishing work :Connection of field cable, removal of brush gear from bed and cleaning polishing, cleaning of brush holder, Erecting brush gear, connection of field cable and changing of all carbon brushes after completion of slip ring polishing work. |
| 19 | Transporting of slip ring cutting lathe from unit 1 stores and fixing the brush gear bed. cutting the slip ring to a required diameter, groove cutting and finishing work decided by the engineer and recording all measurements. |
| 20 | Generator casing charges for painting of one coat of enamel paint to generator outer casing. |
| 21 | Generator rotor field polarity changing work: By changing the field breaker busbar arrangement in the DVR Room. |
| 22 | Charges for Complete overhaul of LT Motor 1.2 KW to 9.3KW |
| 23 | Overhaul of L.T Motors capacity above 12.1 KW to 30 KW. (30kW) |
| 24 | Supply of Bearing No.6205 ZZ(Supply by contractor scop) for Excitation transformer Blowe fan |
| 25 | Supply of Bearing No.6208 (Supply by contractor scop) for AOP Motor of BFP Opening of all earth pit in Transformer Yard, cleaning the earth electrode & pit, checking the joints and earthing rod if necessary, Closing the cover after completion of work. Please Enable Macros to View BoQ information |
AI Tender Summary
Tender Timeline
Sep 25, 2026
11:30 IST
Tender Published
Tender notice published.
CompletedOct 12, 2026
17:00 IST
Bid Submission Deadline
Online submission via eProcurement portal.
Upcoming · 8 daysOct 13, 2026
Bid Opening Date
Technical bids will be opened and evaluated.
Upcoming · 9 daysTender Documents
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