Repairs and Reconditioning of failed Distribution transformers at Chintamani Repair Center

BANGALORE ELECTRICITY SUPPLY CORPORATION LIMITED

(A Government of Karnataka Undertaking)

VOLUME-II Section-I Techno commercial schedule

“For Repair and Reconditioning of conventional type 15/25/63/100/ 200/250/300/ 500/750/1000 kVA capacity of Conventional, Star rated and CSP to Conventional type. Kanakapura, Ramanagara division of BESCOM jurisdiction”

BESCOM ELECTRICITY SUPPLY COMPANY LIMITED

(To be stamped in accordance with stamp Act)

Techno-commercial Schedule

To, Deputy General Manager (Operations-1), Corporate office, BESCOM

Tender No: BESCOM/2025-26/SE0312

Sub: “For Repairs and Reconditioning of 11KV class single coil/multi coil Conventional(Aluminium wound) and 3,4,5 Star Rated failed Distribution Transformers of various Capacities from 25 to 500 KVA and Conversion of CSP to Conventional bolt & nut type on lumpsum Rate basis (Material, Labour & Salvage) at Transformer repair center in Chintamani Taluk, Chintamani Division of BESCOM Jurisdiction”

Ref: BESCOM/2025-26/SE0309

We hereby confirm the following with referenc to the above tender.

S.No Terms and Conditions As per Tender As per the Firm

1 Contract Performance Guarantee As per Clause no 26.0 of Instructions to bidders.

2 Bid Secutiry(EMD) Rs.3,83,247/- (Rupees Three Lakhs Eighty Three Thousand Two Hundred and Fourty Seven only) as per clause no. 9.0 of IFB

3 Period of contract As per Clause 5.0 of IFB

4 Bid Validity 180 days from the date of opening of Techno commercial bids as per clause 7.0 of IFB

5 Testing of Transformer As per Clause 26.0 of GCC

6 Prices and Price variation As per Clause 11.0 of GCC

7 Taxes & Duties As per Clause 12.0 of GCC

8 Payment Terms As per Clause 17.0 of GCC

9 Guarantee for repaired Transformer As per Clause 15.0 of GCC

10 Penalty for delay in supply of repair transformers As per Clause 24.0 of GCC

11 Issue of Award, Repair and Delivery As per Clause 23.0 of GCC

12 Termination of contract As per Clause 30.0 of GCC

13 Tools & Plants As per list enclosed in Annexure-D

Date: NAME OF THE BIDDER

We confirm that any deviation to the above clauses at Sl No. 1 to 13 anywhere in our bid proposal, implicit or explicit shall stand unconditionally withdrawn, without any cost implication whatsoever by BESCOM.

Date: Signature

Place: Printed Name

Bangalore Electricity Supply Company Limited

Sub: “For Repairs and Reconditioning of 11KV class single coil/multi coil Conventional(Aluminium wound) and 3,4,5 Star Rated failed Distribution Transformers of various Capacities from 25 to 500 KVA and Conversion of CSP to Conventional bolt & nut type on lumpsum Rate basis (Material, Labour & Salvage) at Transformer repair center in Chintamani Taluk, Chintamani Division of BESCOM Jurisdiction”

Tender No: BESCOM/2025-26/SE0312

The bidder must upload relevant documents in support of qualifying requirements while submitting bid.

Name and address of Bidder:

Sl No Qualifying Requirments

I Technical Requirements:

Sl No Technical Requirement Documents to be uploaded Details to be furnished by the bidder to satisfy QR conditions

a The Bidder should be in existence as any of the following: (a) Company incorporated in India under the Companies Act, 1956/2013 Including any amendment thereto; (b) LLP incorporated in India under the Limited Liability Partnership (LLP) Act, 2008 including any amendment thereto; (c) Partnership Firm under Partnership Act, 1932 in India; (d) Sole Proprietorship Concern In case the Bidder is Registered company incorporated under Companies Act, 1956/2013 the Bidder has to upload the following documents: 1. Certificate of Incorporation issued by Registrar of Companies as per Companies Act 1956/2013 along with Memorandum of Association and Articles of Association of the Company. 2. Annual filings (E-Forms AOC-4, MGT-7) filed by the Company to Registrar of Companies (Ministry of Corporate Affairs, Government of India) for preceding two Financial Years. 3. Declaration from Directors of the Company in form MBP-1, stating that they are not disqualified to be a Director of the Company along with the list of Companies in which they are Directors as on the date of inviting tender(s). In case the Bidder is LLP incorporated in India under the Limited Liability Partnership (LLP) Act, 2008 the Bidder has to upload the following documents: 1. Certificate of Incorporation issued by Registrar of Companies as per LLP Act 2008. 2. Limited Liability Partnership Agreement of LLP. 3. Form 11-Annual Return filed by LLP to Registrar of Companies (Ministry of Corporate Affairs, Government of India) for preceding two Financial Years. In case the Bidder is Partnership Firm under Partnership Act, 1932 in India then the Bidder has to upload the following documents: 1. Partnership Deed, GST Registration Certificate. 2. Shops & Establishment Registration Certificate, as applicable. In case the Bidder is Proprietorship Firm the Bidder has to upload the following documents: 1. PAN/GST Registration Certificate

b The bidder should have a valid "Registration certificate of Establishment" issued by the department of labour, Government of Karnataka i.e., form -C. Nature of business should be "Transformer repairs/Transformer Manufacture & Repairs/ Repair & Reconditioning of Transformers" The bidder should upload valid Registration certificate of establishment issued by the Department of Labour, Government of Karnataka i.e., form -C. Nature of business should be "Transformer repairs/Transformer Manufacture & Repairs/ Repair & Reconditioning of Transformers"

c The bidder should have carried out repair of failed Distribution Transformers of atleast 764 totalling in any of the capacities ranging from 25 KVA to 500 KVA (Aluminium/ copper wound) in any one of the five preceding Financial years i.e. 2020-21, 2021-22, 2022-23, 2023-24 and 2024-25 in BESCOM. The bidder should upload total Number of Transformers work order/work awarded for repairs issued by EE’s/SEE’s duly signed not below the rank of Executive Engineers of C, O&M Division, BESCOM as per Abstract-1 (enclosed).

d The % failure rate of repaired distribution Transformers within guarantee period should be less than 6% in that particular year. For example if Bidder has repaired 1250 nos. of transformers during 2020-21 and has uploaded 764 for meeting Technical requirement as in QR I(c), in such case the bidder should upload performance certificate for total 1250 Nos. of repairs carried out in that particular year i,e., 2020-21 The bidder should upload data related to all the transformers repaired of all the years uploaded in QR I (c). The Bidder Should upload the Performance Certificate for the above along with Percentage failure rate of repaired Distribution Transformers within guarantee period as per Abstract-2 duly certified by the concerned jurisdictional Executive Engineer.

e The WGP Transformers should not be pending for repairs as on 30.08.2025 and has returned to concerned stores. Further if it comes to the knowledge of BESCOM that, if their exists Within Guarantee Period (WGP) transformers then the bid is liable for rejection. The bidder should upload the certificate jointly signed by the respective Divisional Executive Engineer & firm with date on or after tender notification stating that there is no WGP transformers pending for repairs as on 30.08.2025 and has returned to concerned stores as per the Abstract-3 (enclosed).

f Bidder should have necessary infrastructure for repairing at least 150 Nos. of Distribution Transformers per month. The bidder should upload Self declaration with date on or after tender notification in the Non Judicial 500/- Stamp paper and also Annexure-D signed by the respective jurisdictional Divisional Executive Engineer. If the bidder does not have the repair center at the time of tender notification, then the concerned jurisdictional Executive Engineer where the bidder is having the tools & equipments should certify the Annexure-D.

g The Bidder should engage qualified personnel having Degree in Bachelor of Electrical Engineering/Diploma in Electrical Engineering to supervise the process of Distribution Transformer repair works. The Bidder should upload necessary Self-Declaration with date on or after tender notification in a Non Judicial 500/-Stamp paper.

h The bidder should possess the following valid registration certificates in the name of the Proprietorship/firm/Company as mentioned in QR (a) i. EPF registration certificate ii. ESI registration certificate iii. PAN card iv. GST registration certificate The Bidder should upload scanned copy of original valid certificates of the EPF, ESI, PAN, GST Registration Certificates.

i The bidder should have valid statutory certificate issued by KSPCB for the transformer repair centre for disposal of scrap material & oil waste. Self-declaration with date on or after tender notification in Non-Judicial 500/-Stamp paper duly declaring that, if the bidder becomes L1, they will submit the statutory certificate issued by KSPCB in the name of Proprietorship/ firm/Company pertaining to respective repair centre (where the repair centre has been established) within 90 days from the date of LOI. The BESCOM reserves the right to cancel DWA, in case if the firm fails to submit the KSPCB certificate for the respective repair centre.

j The bidder should not have been terminated due to breach of contract/ black listed/defaulted/short closed due to non-performance in execution of works against work awards placed by any Government Department/ Power Utility in Karnataka or any other state at the time of last date of tender. The bidder should upload Self declaration with date on or after tender notification in a Non Judicial Rs. 500/- Stamp paper.

k The bidders who have been already awarded one repair center having validity of more than 6 months at the time of Notification in BESCOM jurisdiction is not eligible to participate. The bidder should upload Self-Declaration with date on or after tender notification in a Non Judicial Rs. 500/-Stamp paper

l The bidder should agree to install minimum of 5 Nos. of Web based CCTV cameras at suitable place in the repair center at his own cost as per the BESCOM requirement for monitoring of all the activities in the repair centre before start of repair work and it should be maintained till the completion of contract period. The bidder should upload self-declaration with date on or after tender notification in a Non Judicial Rs. 500/-Stamp paper.

II Financial Requirements:

The Annual Financial Turnover of the Bidder shall not be less than 50% of the amount put to tender in any one year of the previous five financial years i.e., 2020-21, 2021-22, 2022-23 ,2023-24 & 2024-25 Original Certified copies of audited financial statements such as Profit & Loss account statement, Balance sheets for all the Financial Years i.e., 2020-21, 2021-22, 2022-23 ,2023-24 & 2024-25 shall be uploaded. In case the Audited Annual Accounts for FY 2024-25 is not available, the bidder has to upload the original provisional Profit & Loss account statement and Balance sheet duly certified by the Chartered Accountant.

The Liquid Assets as on 30.11.2025 or at a later date before submission of the bid consisting of Cash at Bank + Term Deposits + availability of fund based credit facility in any Nationalized/scheduled Bank shall not be lesser than 25% of the amount put to tender. The cash at Bank, Bank Deposits and availability of fund based credit facilities shall be supported by a certificate issued by Nationalized/ Scheduled Bank shall be uploaded as per Annexure-3. If the Bidder has banking with more than one Bank, then the available liquid assets balance mentioned above on a particular date i.e., as on 30.11.2025 or later date before submission of bids shall be of the same date and time for all the banks.

III General Criteria

A Certificate for having read the above clauses is required to be submitted / uploaded by the Bidder separately in the following format: “I have read the clause regarding restrictions on procurement from a bidder of a country which shares a land border with India; I certify that this bidder is not from such a country or, if from such a country, has been registered with the Competent authority. I hereby certify that this bidder fulfils all requirements in this regard and is eligible to be considered. (Where applicable, evidence of valid registration by the competent Authority shall be attached).” Note: Government orders No: FD 455 Exp-12 2020 Bengaluru Dated 25.08.2020 and its amendment dated 29.03.2021. The bidder should upload self-declaration with date on or after tender notification in a Non-Judicial Rs. 500/-Stamp paper.

All Self-declarations shall be done on a single Non Judicial stamp paper of Rs.500/- for the particular tender.

Note: 1. The required original documents for fulfilling the above should be scanned and uploaded along with the filled in Annexure C1 to C3, E & F in the prescribed format to be signed by Bidder & Annexure D is to be signed by respective jurisdictional Executive Engineer, C, O& M Division. 2. Power of Attorney in favour of an individual to sign the tender documents in case of Partnership firm/company registered under companies act shall be uploaded. 3. The documents which are uploaded by the bidder should be the same proprietor in the same firm. 4. The required documents for fulfilling the above Qualifying requirements shall be uploaded along with the techno-commercial bid as prescribed. 5. The Original copy of EPF/ESI registration Number, Labour License, GSTN Registration Number with date, Industrial License, KSPCB consent letter, PAN Number to be scanned and uploaded. No Xerox copies are allowed to be uploaded 6. If any information stated in the above said declarations found false at any stage of tendering process or after issuing LOI/DWA, then the contract will be liable for cancellation and necessary action will be taken as per clause 18.0 of IFB. 17.0 General Conditions 1. Maximum of 1 repair center will be awarded to the successful bidder in BESCOM jurisdiction at discretion of BESCOM. 2. If the bidder is technically qualified in more than one bid, the price bid will be opened in the descending order of the contract value starting with the highest amount put to the tender for which the bidder is eligible at the discretion of BESCOM. If the bidder becomes L1 in one bid then the subsequent bids will not be opened and will be treated as non-responsive. 3. However if no competitive bids are received in a tender, BESCOM may reserve the right at the sole discretion of the company to consider and to entrust more than one award to a bidder in the interest of BESCOM. 4. Notwithstanding anything stated herein above, BESCOM reserves the right to assess the capacity and capability of the Bidder, if the circumstances warrant such assessment in the interest of BESCOM. BESCOM reserves the right to waive any minor non-conformity or any minor irregularity in an offer, if they do not affect the capability of the Bidder to perform the contract. 5. In case the uploaded bid documents could not be opened/not visible at the time of opening of Techno-commercial bids, the bids are liable for rejection and BESCOM will not be responsible in any manner. 6. Only the documents that are uploaded in Karnataka Public Procurement Portal are considered. 7. If the tender of the successful bidder is seriously unbalanced in relation to the Employer's estimate of the cost of the work to be performed under the contract, the Employer may required the bidder to produce detailed price analysis for any or all items of the Bill of quantities, to demonstrate the internal consistency of those prices with the present practice of repair. After evaluation of the price analyses, the employer may require that the amount of the performance security set forth in Clause 26 of ITB be increased at the expense of the successful bidder to a level sufficient to protect the employer against financial loss in the event of default of the successful under the contract.

BANGALORE ELECTRICITY SUPPLY COMPANY LIMITED

Tender No: BESCOM/2025-26/SE0312

Sub: “For Repairs and Reconditioning of 11KV class single coil/multi coil Conventional(Aluminium wound) and 3,4,5 Star Rated failed Distribution Transformers of various Capacities from 25 to 500 KVA and Conversion of CSP to Conventional bolt & nut type on lumpsum Rate basis (Material, Labour & Salvage) at Transformer repair center in Chintamani Taluk, Chintamani Division of BESCOM Jurisdiction”

ASSESSMENT OF FINANCIAL CAPABILITY OF FIRMS

(To be submitted by the bidder along with the bid)

Sl No Particulars Details

1 Name of the firm

2 Annual turnover for the last five years Financial Year Amount

3 Liquid Assets a) Cash at Bank

b) Term Deposits/Fixed Deposits

c) Availability of fund based credit facilities as on the date of NIT or at later date

4 Liquid liabilities

Place: Signature of the bidder with seal

BANGALORE ELECTRICITY SUPPLY COMPANY LIMITED

Details of T&P materials & testing equipments available with the Bidder

The details of T&P materials and testing equipments available with the bidder (quantities, capacities, range etc.,)

Reference Quantity Available

1 Name of the Firm

Address of Repair Center

2 a) Registration /Licence No. & date

3 Electric oven 12X8X6 Feet 18KW (20 Jobs at aTime)

4 Coil winding Machine for HV & LV HV Winding Machines-3 Nos, LV Winding Machines-2 Nos

5 Oil storage capacity with details

6 Oil filter set 1Set

a) Machine capacity 1200 G/H

b) Make/model Any Make

7 Mobile crane /gantry 1 SET

8 Chain pully block 1 Tone-2 No`s and 2 Tone-1 No`s

9 Weighing scale/Machine 1 NO

10 Air Compresser 1 SET

11 Drilling Machine(power) Bench 1 No and Hand Drilling 1 No

12 Welding Machine 500 A 1 SET

13 Oil testing kit 1 SET

a) Spanner set& Measuring Tape Avaliable

b) Micro meter 1 NO

c) Vernier Caliperse 1 NO

d) Screw Gauge 1 NO

e) Standard wire Gauge 1 NO

f) Grinder 1 NO

g) Spray painting M/C with gun 1 SET

h) Shearing M/C (Hand/power) 1 NO

I) Bench Vice 1 NO

j) Testing bench 1 SET

with Meters ,controls &3 phase

Dimmer stat etc .,

15 Testing Equipments

a) Megger i) 2.5KV 1 NO

b) Tong tester 1 NO

c) Volt meter 1 NO

d) Ammetre 1 NO

e) Wattmeter 2 NO

f) AVO meter (millimeter) 1 NO

g) Dimmer stat 1 NO

h) Phase sequence meter 1 NO

I) High voltage Testing kits (28Kv & 3kv) 1 NO

j) Induced voltage(800V, 100c/s) 1 NO

k) Turns Ratio meter 1 NO

l) D.C Resiostance meter 1 NO

16 Test Certificate issued by CPRI/NABL for test bench. The test certificate should be valid at the time of Techno Commercial bid YES /No

a) Testing Enginner 1 NO

b) Supervisor 1 NO

c) Skilled labor 3 NO

d) helpers 5 NO

Certificate: Certified that the above equipments are available with the said firm M/s___________________, repair center located at ____________________ and are sufficient to carry out repairs of atleast 150Nos. of failed Distribution Transformers per month.

Place : Executive Engineer(Ele) C, O & M _____ Division,

Bangalore Electricity Supply Company Limited

Tender No: BESCOM/2025-26/SE0312

Sub: “For Repairs and Reconditioning of 11KV class single coil/multi coil Conventional(Aluminium wound) and 3,4,5 Star Rated failed Distribution Transformers of various Capacities from 25 to 500 KVA and Conversion of CSP to Conventional bolt & nut type on lumpsum Rate basis (Material, Labour & Salvage) at Transformer repair center in Chintamani Taluk, Chintamani Division of BESCOM Jurisdiction”

No deviation certificate ( the bidder shall upload this certificate)

DECLARATION BY THE BIDDER

With reference to the bid proposal Tender No: BESCOM/2025-26/SE0312 “For Repairs and Reconditioning of 11KV class single coil/multi coil Conventional(Aluminium wound) and 3,4,5 Star Rated failed Distribution Transformers of various Capacities from 25 to 500 KVA and Conversion of CSP to Conventional bolt & nut type on lumpsum Rate basis (Material, Labour & Salvage) at Transformer repair center in Chintamani Taluk, Chintamani Division ” we confirm that we have read the bid conditions and stipulations and all the clauses are acceptable to us and we have not taken any deviations whatsoever. Any deviations mentioned anywhere in the document shall be ignored.

Name of the Bidder:

Ref No :- Dated :-

Having Examined and understood the Terms and conditions of the Bid documents

and the Scope of Work in the Bidding documents issued under Enquiry No.

We hereby agree to supply the materials in confirmity with the technical specification enumerated in the Bidding Documents, for the sum stated and quoted in the Bid or such other sums as may be ascertained in accordance We undertake, if our Bid is accepted, to execute the contract with in the stipulated time with the Schedule of Prices attached herewith and made part of the Bid.

We note that the prices offered are (as per the Bid stipulation) FIRM as per the commercial terms and conditions. We agree to keep this Bid valid for a period of 180 days from the date fixed for Bid opening and it shall remain binding upon us and may be accepted at any time before expiration of that period. We have paid EMD through e-payment

Until a formal contract is prepared & executed, this Bid together with your written

acceptance thereof in your notification of Award shall constitute a binding contract

Dated this day of 2025

Name in Block Letters

( in the capacity of )

Duly authorised to sign Bid for and on behalf of

BANGALORE ELECTRICITY SUPPLY COMPANY LIMITED

(A Government of Karnataka Undertaking)

Tender No. BESCOM/2025-26/SE0312

“For Repairs and Reconditioning of 11KV class single coil/multi coil Conventional(Aluminium wound) and 3,4,5 Star Rated failed Distribution Transformers of various Capacities from 25 to 500 KVA and Conversion of CSP to Conventional bolt & nut type on lumpsum Rate basis (Material+ Labour - Salvage) at Transformer repair center in Chintamani Taluk, Chintamani Division of BESCOM Jurisdiction"

Deputy General Manager (Ele) Operations-1, Corporate office, BESCOM, Bangalore

Telephone No: 080 - 2208 5074

E-mail : [email protected]

BANGALORE ELECTRICITY SUPPLY COMPANY LIMITED

Price Sheet Abstract (Both for Conventional & Star Rated)

Tender No. BESCOM/2025-26/SE0312

“For Repairs and Reconditioning of 11KV class single coil/multi coil Conventional(Aluminium wound) and 3,4,5 Star Rated failed Distribution Transformers of various Capacities from 25 to 500 KVA and Conversion of CSP to Conventional bolt & nut type on lumpsum Rate basis (Material+ Labour - Salvage) at Transformer repair center in Chintamani Taluk, Chintamani Division of BESCOM Jurisdiction"

Name & address of the Bidder

Repair of Conventional type & 3,4,5 Star Rated Transformers (for Material+ Labour - Salvage Portion) value increase or decrease In Rs to be quoted by the Bidder (INCLUSIVE OF ALL TAXES AND DUTIES)

Scope: As per clause 1.0 of Volume I, Section -II of ITB (Bid document)

Sl No Description Cost for Conventional DTRs as per Annexure "A1" in Rs (Inclusive of all taxes and duties) Cost for 3,4,5 Star rated DTRs as per "A1" in Rs.(Inclusive of all taxes and duties) Comparision Total cost for Conventional and 3,4,5 Star rated DTRs as per Annexure "A1" in Rs. (Inclusive of all taxes and duties)

I Material Portion + Labour Portion-Salvage portion For repair of one each 25 KVA to 500KVA 11KV class single coil/multi coil Conventional(Aluminium wound), 3,4,5 Star Rated 25KVA to 500 KVA on lumpsum basis of (Materials+ Labour - Salvage) put together as in Annexure A1 235806.00 913506.00 1149312.00

II Total amount (including Taxes and Duties) i.e., (I) (Considered for Evaluation) 1149312.00

Note: 1. This sheet is only for reference to the bidder to quote the Value. The bidder should not quote in this price sheet of Annexure-A and it will not be considered for evaluation. The bidder has to quote the value increase or decrease in Rupees(Rs) only in kppp only, which will be considered for evaluation.

BANGALORE ELECTRICITY SUPPLY COMPANY LIMITED

Tender No. BESCOM/2025-26/SE0312

“For Repairs and Reconditioning of 11KV class single coil/multi coil Conventional(Aluminium wound) and 3,4,5 Star Rated failed Distribution Transformers of various Capacities from 25 to 500 KVA and Conversion of CSP to Conventional bolt & nut type on lumpsum Rate basis (Material+ Labour - Salvage) at Transformer repair center in Chintamani Taluk, Chintamani Division of BESCOM Jurisdiction"

Sl No Description Base Price in Rs

Conventional Type Transformers 3 Star rated Transformers 4 Star rated Transformers 5 Star rated Transformers

25 KVA 63 KVA 100 KVA 250KVA 500KVA 25 KVA 63 KVA 100 KVA 250 KVA 500KVA 25 KVA 63 KVA 100 KVA 250 KVA 500KVA 25 KVA 63 KVA 100 KVA 250 KVA 500KVA

1 Transformer Repairs Scope: Repair and Reconditioning of 11KV class single coil/multi coil Conventional (Aluminum wound) and 3/4/5 Star Rated failed Distribution Transformers of various Capacities on lump sum rate basis (Material, Labour) at Transformer Repair center. The rates are inclusive of taxes. 27975 37282 46453 88489 114955 40223 46912 60221 112108 150893 40223 46912 60221 112108 150893 40223 46912 60221 112108 150893

4 Total Base Price (including taxes) 1149312.00

Statement Showing the Details Of Distribution Transformers Manufactured by the firm M/S____________________& supplied to customers/purchasers in _______________ Division, ______ Jurisdiction

Make of Transformer and Firm Address ______________________________Propritor Mr/Mss____ with GSTN No: _____

Sl No Financial Year Supplied to Capacity of Distribution Transformers Manufactured in KVA Total Invoice no & date

EE(Ele)/SEE(Ele)/CEE(Ele) C, O&M ______________ Signature & Seal of the firm

……………………... ELECTRICITY SUPPLY COMPANY LIMITED

Statement Showing the Details Of Distribution Transformers Repaired by the firm M/S____________________, Propreitor Mr/Mrs____ with GSTN No: _____ in _______________ Division, ______ Jurisdiction

Sl No Financial Year Division Work Award/Work order issued by Capacity in KVA Total in No's

Certificate: Certified that the work award/work order has been issued during the respective Financial years for the above mentioned quantity of repair works.

EE (Ele) /SEE(Ele) / CEE(Ele)

C, O & M _______, BESCOM

……………………... ELECTRICITY SUPPLY COMPANY LIMITED

Performance Certificate of the Transformer Repairer M/S____________________Propreitor/Partner ,Mr/Mrs____ with GSTN/VAT No: _____ in _______________ Division, ______ Jurisdiction

Name of the Division:

Sl. No. Year DWA No. & Date Work Order/Award.No. & Date No. of Transformer issued for repairs No. of good Transformers returned after repairs No. of failed Transformers within guarantee period % WGP failure Remarks

Certificate: 1. Certified that the above mentioned transformers repairer by M/s _________ Propreitor/Partner Mr/Mrs____ with GSTN/VAT No: _____ have repaired and returned all the transformers issued to stores and the Performance is found to be satisfactory. 2. The Percentage failure rate of repaired Distribution Transformers within guarantee period is less than 6%

Name & Designation

O&M Circle/Division, _______BESCOM

……………………... ELECTRICITY SUPPLY COMPANY LIMITED

Details of Within Guarantee Period Transformer Repaired, Returned and balance of M/S____________________Propreitor/Partner ,Mr/Mrs____ with GSTN/VAT No: _____ in _______________ Division, ______ Jurisdiction

Sl. No. Agency Year ESCOM Division Location of Repair Center No. of failed Transformers within guarantee period No. of WGP Transformers repaired & returned to concerned store Balance No. of Transformers to be repaired Remarks

Certificate: 1. Certified that there is no WGP transformers pending for repairs as on 30.08.2025 and has returned to concerned stores.

Executive Engineer (Ele) Name & Signature of the Bidder with seal

C, O&M _______Division,

Performance Certificate of the Manufacturer firm M/S____________________Proprietor Mr/Mss____ with GSTN No: _____ in _______________ Division, ______ Jurisdiction

Make of Transformer and Firm Address ______________________________Propritor Mr/Mss____ with GSTN No: _____

a) Conventional

Sl No Supplied to Date of Commissioning Capacity of Distribution Transformers Manufactured in KVA Total Invoice no & date

Certificate: Certified that the above mentioned transformers supplied by M/s _________ Propritor Mr/Mss____ with GSTN No: _____ have performed not less than 3 years from the date of commissioning .

EE (Ele) /SEE(Ele) /CEE (Ele)

Make of Transformer and Firm Address ______________________________Propritor Mr/Mss____ with GSTN No: _____

Sl No Supplied to Date of Commissioning Capacity of Distribution Transformers Manufactured in KVA Total Invoice no & date

Certificate: Certified that the above mentioned transformers supplied by M/s _________Propritor Mr/Mss____ with GSTN No: _____ have performed not less than 3 years from the date of commissioning .

EE (Ele) /SEE(Ele) /CEE (Ele)

(Note: Bidder has to upload this completed letter along with Bid Documents)

No: _______ Date:

This is to certify that M/s. _____________________________ Propritor Mr/Mss____ with GSTN No: _____ camp at _________________ have under taken the repair and reconditioning of faulty distribution transformers work and the % failure rate of repaired distribution transformers within guarantee period is less than %.

The details of capacity wise transformers repaired and faulty within guarantee period is as here under.

Sl. No. Year No. of transformers repaired in KVA No. of transformers faulty within guarantee % failure Penalty imposed if any Rs. in Lakhs

25 63 100 Total 25 63 100 Total 25 63 100 Total

Name & Designation

O&M Division/MT Division.

Note: Clearly mention Penalty imposed or Not.

Statement Showing the Details Of Distribution Transformers Manufactured by the New Entrant firm M/S________________

Make of Transformer and Firm Address ______________________________

Sl No Financial Year Division DTR Supplied to Capacity in KVA Total

Firm Invoice No. Date

EE (Ele) /SEE(Ele) /CEE (Ele)

Statement Showing the Details Of Distribution Transformers Repaired by the Minor repair New Entrant firm M/S________________

Sl No Financial Year Division PO issued by P.O No/Work order No/ Work award & Date Capacity in KVA Total

EE (Ele) /SEE(Ele) /CEE (Ele)

BANGALORE ELECTRICITY SUPPLY COMPANY LIMITED

(A Government of Karnataka Undertaking)

VOLUME-I Section-IV Annexures

Tender No:BESCOM/2025-26/SE0312

“For Repairs and Reconditioning of 11KV class single coil/multi coil Conventional(Aluminium wound) and 3,4,5 Star Rated failed Distribution Transformers of various Capacities from 25 to 500 KVA and Conversion of CSP to Conventional bolt & nut type on lumpsum Rate basis (Material, Labour & Salvage) at Transformer repair center in Chintamani Taluk, Chintamani Division of BESCOM Jurisdiction ”

Deputy General Manager (Ele) Operations-1, Corporate office, BESCOM, Bangalore

Telephone No: 080 - 2208 5074

E-mail : [email protected]

BANGALORE ELECTRICITY SUPPLY COMPANY LIMITED

Transformer Repair status Register

[To be maintained seperately for Star rated and Conventional Type]

Lot No.: Capacity of Transformer:

P.O.No.with date: No. of Transformers: Repair bill submitted on:

W.O.No. with date: Date of issue of Transformer: Repair bill paid on:

Date of issue of Transformer Oil:

Sl.No. Name Plate Detail Winding design(type) Coil winding & Assembaly completed on Transformer drying started on ( date & time ) Transfomer drying completed on Re-conditioning & painting of Tank completed on Stage inspection carried on by MT Date of tanking & Oil filling Date of periliminary tests conducted by the firm Date of test conducted by BESCOM Date of delivery of Transformers to store Remarks

Make Mfg.yr. Sl.No.

BANGALORE ELECTRICITY SUPPLY COMPANY LIMITED

Stage Inspection Register

[To be maintained seperately for Star rated and Conventional Type]

P.O.No.& Date :

Date of Stage inspection : From ____________ To________________ Lot No.:

Sl.No. Make Trs.Sl.No. Mfg.Year core Height in mm Core Dia. Core window gap Core Laminatiom Thickness Low Voltage Section High voltage section Phase barrier (3mm) Core Wrapper(2mm) Channel Liner(3mm) Pacer between HV & LV 8 nos. (6.5X10-15mm) End insulation PB's 8nos.at Bottom(30mm) HV Delta 2mm Copper sleeves 3.6mm SRBP tube (1mm thick 12mm O.D) Support to HV leads(6mm) LV jumper 25X3mm 'S'clamp PB in betweenHV & LV (2mm cylinder) Tie rod insulation (1.5 mm craft paper Phase to phase clearence (HV) 10mm Insulation between LV coil layers Insulation between HV coil layers Remarks

Hieight Internal Dia. Outer Dia. No.of LV Turns Size of LV conductors Hieight Internal Dia. Outer Dia. No.of HV Turns Size of HV conductors

Assistant Executive Engineer (MT)

BANGALORE ELECTRICITY SUPPLY COMPANY LIMITED

Raw Materials Register

[To be maintained seperately for Star rated and Conventional Type]

Sl. No. Description of Materials Date of Receipt Quantity of Materials received Materials inspected Remarks

By Repairs By BESCOM

BANGALORE ELECTRICITY SUPPLY COMPANY LIMITED

NAME OF REPAIRER: Annexure-IV

P.O.NO & DATE- DATE OF TESTING ___________ CAPACITY OF TR- NO OF TRS-

SL. No. NAME PLATE DETAILS PHASE TEST REPORT CONFIRM OF MEGGER RESULT BY MTD CONFIRM OF DC RESISTANCE BY MTD HIGH VOLTAGE TEST DV/DF TEST (APPLY)800 VOLTS@100 HZ FOR 1 MIN BDV OF OIL IN KV NO LOAD TEST

MAKE SERIAL NO MEGGER RESULT IN MEGA OHMS DC RESISTANCE IN OHMS HV SIDE SHORT 2U,2V,2W,2N&GR LV SIDE SHORT 1U,1V,1W&GR LV VOLTAGE IN VOLTS BETWEEN CURRENT IN AMPS AT WATT METER READING IN WATTS

IN OHMS IN MILLI OHMS

HV TO LV(2.5 KV MEGGER HV TO GR(2.5KV MEGGER LV TO GR(2.5 KV MEGGER 1U-1V 1U-1W 1W-1U 2U-2N 2V-2N 2W-2N APPLY 28KV TO (1U,1V,1W)FOR 1 MINT APPLY 2.5KV TO (2U,2V,2W, FOR 1 MINT 2U-2V 2V-2W 2W-2U 2U 2V 2W IRON LOSSES (WO) IN WATTS PERMISSABLE LOSSES AS PER ISI/STD

SL NO VECTOR GROUP TEST BY 11(SHORT 2N-1U APPLY 433 V ON HV RATIO TEST AVARAGE VOLTAGE SC TEST (APPLIED VOLTAGE 3 PH ON HV SIDE SHORT SECONDARY WL=WT(IR/LT)2

1V-2U 1V-1U 1U-2U 1U-1W 1W-2W 1U-2W 1V-2U=1V-1U+1V-2U APPLIED VOLTAGE 2U-2V 2V-2W 2W-2U 2V-2U 2V-2N 2W-2N CURRENT HV IN AMPS CURRENT LV IN AMPS 2T=(2RAT) VT/1/10 COPPER LOSSES IN WATTS W75 PERMISABLE LOSESSTNDS WETHER ACCEPTABLE

1U 1V 1W 2U 2V 2W NEUTRAL CURRENT IN AMPS

Firm Representative ASSISTANT EXE ENGINEER (Ele),

Seal & Sign MT________ DIVISION, BESCOM

BANGALORE ELECTRICITY SUPPLY COMPANY LIMITED

C)Specification For Distribution Transformer repair ( 25KVA, 11000/4333 volts, Vector Group :Dyn-11)

Core Window dimension Hv winding details LV winding details Remarks

Make Height in mm Core dia. In mm Width in mm Size of conducter ( dia) in mm No of conductor with double layer Electrical Grade paper insulation No of turns No of layers Size of conducter ( dia) in mm No of conductor with double layer Electrical Grade paper insulation No of turns No of layers

Note: Any Deviation should be approved by AE/AEE(Testing)

B)Specification for Distribution Transformer repair ( 63 KVA , 11000 Volts, Vector Group :Dyn-11)

Make Core Window dimension Hv winding details LV winding details Remarks

Height in mm Core dia. In mm Width in mm Size of conducter ( dia) in mm No of conductor with double layer Electrical Grade paper insulation No of turns No of layers Size of conducter ( dia) in mm No of conductor with double layer Electrical Grade paper insulation No of turns No of layers

345 245-250 1.32 Single 4092 10X5 single 93

380 Single 4224 10X5 single 96

380 Single 4358 10X5 single 99

345 95-100 245 Single 4224 10X4.5 single 96

345 95-100 245 Single 4224 9.5X5 single 96

Note: Any Deviation should be approved by AE/AEE(Testing)

A) Specification for Distribution Transformer Repair ( 100KVA, 11000/4333 volts, Vector Group: Dyn-11)

Make Core Window dimension Hv winding details LV winding details Remarks

Height in mm Core dia. In mm Width in mm Size of conducter (dia) in mm No of conductor with double layer Electrical Grade paper insulation No of turns No of layers Size of conducter ( dia) in mm No of conductor with double layer Electrical Grade paper insulation No of turns No of layers

480 Single 3520 10X4 Two 80

Note: Any Deviation should be approved by AE/AEE(Testing)