Tender For Transformer Package Tato-I Hydro Electric Project (186 Mw),Arunachal Pradesh.
Tender Value
Ref. Documents
Estimated cost
Bid Submission
27 Nov 2026
12 days left
EMD
2.36 Crore
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
Shi Yomi → Arunachal Pradesh
EMD Exemption
Available
Quantity
Not Available
Website
Contact Person
Address
Project Description
Tender for Transformer Package Tato-I Hydro Electric Project (186 Mw),Arunachal Pradesh.
BOQ
| Sl. No. | Item Description |
| 1 | Total from Price Schedule II (Supply) |
| 2 | Total from Price Schedule III (F&I) |
| 3 | Total from Price Schedule IV (Supervision of Storage) |
| 4 | Total from Price Schedule V (Supervision of ETC) |
| 5 | GENERATOR TRANSFORMERS |
| 6 | Generator Transformer :11kV/220/√3kV, 27 MVA, 1 Ph, 50Hz, Z=12.5%, off circuit tap changer, Vector group YNd11, OFWF step-up transformer suitable for 3 Ph bank connection in Delta/Star with neutral solidly grounded. Transformer shall be supplied complete with HV neutral bushing for connection to neutral bus, HV bushing suitable for oil to gas termination and LV bushings with flanges suitable for IPBD termination and external delta formation, 1No, 2 core, 17.5 kV, 400/1/1A CL PS Neutral (external zero sequence) CT per bank ,1 Nos. 3 core, 400/1/1/1A , CT mounted in HV bushing turret, first fill of oil + 10% extra oil complete with Air cell type conservator, Two automatic Pressure reducer (From 3 to 5 kg/cm2 to a constant 0.2 kg/sq.cm (a value less than oil pressure inside the tank)) for each Transformer bank. WTI, OTI, Optical sensor for temperature measuring, Buchholz relay, MOG, Breather, MB, oil pumps, oil to water coolers and associated instruments, valves, flanges etc. as per technical specification and as below : |
| 7 | First fill of oil for all equipment supplied, with 10% extra oil |
| 8 | The 11 kV interface flange with the 5000 A insulated phase duct. |
| 9 | The 220 kV SF6 Insulated transformer termination for connection to 220 kV GIS tube including the coordination, supervision and approval of the termination connection. |
| 10 | The insulated neutral bus and zero sequence external CT (two cores required) including insulators and supports. |
| 11 | The current transformer, protection and control cables, and connections between the transformer control cabinets, marshalling kiosks and the marshalling box. |
| 12 | Marshalling box per transformer bank complete with disconnect type terminals for voltage circuits and short-circuiting type terminals for current circuits and all the necessary incoming and outgoing terminal blocks including all inter-connecting cables. |
| 13 | Marshalling kiosks per transformer complete with disconnect type terminals for voltage circuits and short-circuiting type terminals for current circuits and all the necessary incoming and outgoing terminal blocks including all inter-connecting cables. |
| 14 | The 415/240 V AC cables and connections between the main and standby oil pump control panels and the common marshalling box. |
| 15 | The 415/240 V AC disconnect switches (2 per Bank of transformers. |
| 16 | Dynamic Short Circuit Test (in case the bidder does not possess valid DSC reports) |
| 17 | Mandatory Spares as per Technical Specification. |
| 18 | Station-Service Transformer (SST) |
| 19 | Station Service Transformer: 5000 kVA, 220 kV / 33 kV, 3 phase, 50 Hz, YNyn0, Step-down, Oil Type, Indoor transformer with Off-Circuit Tap Changer and suitable for cable connection for LV. |
| 20 | Mandatory Spares as per Technical Specification. |
| 21 | Earthing Material for connection from over ground riser to the equipment/panel as per specification. |
| 22 | Transformer Oil Filtration system |
| 23 | 6000 LPH Transformer Oil Filtration System as per specification. |
| 24 | 25KL storage tank as per specification. |
| 25 | GENERATOR TRANSFORMERS |
| 26 | Generator Transformer :11kV/220/√3kV, 27 MVA, 1 Ph, 50Hz, Z=12.5%, off circuit tap changer, Vector group YNd11, OFWF step-up transformer suitable for 3 Ph bank connection in Delta/Star with neutral solidly grounded. Transformer shall be supplied complete with HV neutral bushing for connection to neutral bus, HV bushing suitable for oil to gas termination and LV bushings with flanges suitable for IPBD termination and external delta formation, 1No, 2 core, 17.5 kV, 400/1/1A CL PS Neutral (external zero sequence) CT per bank ,1 Nos. 3 core, 400/1/1/1A , CT mounted in HV bushing turret, first fill of oil + 10% extra oil complete with Air cell type conservator, Two automatic Pressure reducer (From 3 to 5 kg/cm2 to a constant 0.2 kg/sq.cm (a value less than oil pressure inside the tank)) for each Transformer bank. WTI, OTI, Optical sensor for temperature measuring, Buchholz relay, MOG, Breather, MB, oil pumps, oil to water coolers and associated instruments, valves, flanges etc. as per technical specification and as below : |
| 27 | First fill of oil for all equipment supplied, with 10% extra oil |
| 28 | The 11 kV interface flange with the 5000 A insulated phase duct. |
| 29 | The 220 kV SF6 Insulated transformer termination for connection to 220 kV GIS tube including the coordination, supervision and approval of the termination connection. |
| 30 | The insulated neutral bus and zero sequence external CT (two cores required) including insulators and supports. |
| 31 | The current transformer, protection and control cables, and connections between the transformer control cabinets, marshalling kiosks and the marshalling box. |
| 32 | Marshalling box per transformer bank complete with disconnect type terminals for voltage circuits and short-circuiting type terminals for current circuits and all the necessary incoming and outgoing terminal blocks including all inter-connecting cables. |
| 33 | Marshalling kiosks per transformer complete with disconnect type terminals for voltage circuits and short-circuiting type terminals for current circuits and all the necessary incoming and outgoing terminal blocks including all inter-connecting cables. |
| 34 | The 415/240 V AC cables and connections between the main and standby oil pump control panels and the common marshalling box. |
| 35 | The 415/240 V AC disconnect switches (2 per Bank of transformers. |
| 36 | Dynamic Short Circuit Test (in case the bidder does not possess valid DSC reports) |
| 37 | Mandatory Spares as per Technical Specification. |
| 38 | Station-Service Transformer (SST) |
| 39 | Station Service Transformer: 5000 kVA, 220 kV / 33 kV, 3 phase, 50 Hz, YNyn0, Step-down, Oil Type, Indoor transformer with Off-Circuit Tap Changer and suitable for cable connection for LV. |
| 40 | Mandatory Spares as per Technical Specification. |
| 41 | Earthing Material for connection from over ground riser to the equipment/panel as per specification. |
| 42 | Transformer Oil Filtration system |
| 43 | 6000 LPH Transformer Oil Filtration System as per specification. |
| 44 | 25KL storage tank as per specification. |
| 45 | Continuous remote supervision |
| 46 | Periodical physical inspection |
| 47 | Technical Expert(s) |
| 48 | Continuous Online Monitoring and Analyzing System for a minimum of 3 fault gasses as given in specification as OPTIONAL for Generator Transformers. (The same shall not be considered for Bid Evaluation.) Notes: 1. The Above PRICE SCHEDULE VI (Optional Item) will not be considered for evaluation of L1 price. 2. The above price schedule shall also be submitted along with Techno-Commercial offer without indicating the prices. Please Enable Macros to View BoQ information |
AI Tender Summary
Tender Timeline
Nov 13, 2026
11:30 IST
Tender Published
Tender notice published.
CompletedNov 27, 2026
17:00 IST
Bid Submission Deadline
Online submission via eProcurement portal.
Upcoming · 12 daysNov 28, 2026
Bid Opening Date
Technical bids will be opened and evaluated.
Upcoming · 13 daysTender Documents
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