Potential transformer 66kV

KARNATAKA POWER TRANSMISSION CORPORATION LIMITED

SCHEDULE- I - GUARANTEED TECHNICAL PARTICULARS

ENQUIRY NO. KPTCL/SEE/Tr(Op)/Cir-South/EE(O)/AEE-2/JE-1/25-26/EPR-23 Dated: 26.02.2026 CALL-3

Tender for Design, manufacturing testing, and supply of 66KV Class Potential Transformers (0.2 Accuracy), 31.5KA rating of ratio 66KV/√3/110V/√3-110V/√3-110V/√3 (with Marshalling Boxes and without Mounting Structures) to various Sub-stations coming under Transmission (Operations) Circle-South

Name of the firm

Sl. No. Particulars 31.5KA rating of ratio 66KV/√3/110V/√3-110V/√3-110V/√3

1 Name of the Manufacturer :

2 Country of Origin :

3 Standard governing specification :

5 Manufacturer’s type designation :

6 a. Nominal system voltage (KV) :

b. Highest system voltage (KV) :

7 Rated Primary current (Amp) :

Rated secondary current (Amp) :

Rated Transformer ratio :

8 Rated Current Transformer Secondary terminal voltage at :

a. Rate current. :

b. 10 times the rated current. :

c. 20 times the rated current. :

9 Ratio of current transformer :

10 Number of cores :

11 Details of Core Core-2 Core-3 :

i. Rated burden

ii. Accuracy class

iii.Accuracy limit factor

iv Instrument security factor

v Knee point voltage at

vi Secondary winding

resistance (Ret in Ohms)

vii Magnatising current at Vk/4

i. Rated burden

ii. Accuracy class

iii.Accuracy limit factor

iv Instrument security factor

v Knee point voltage at

vi Secondary winding

resistance (Ret in Ohms)

vii Magnatising current at Vk/4

i. Rated burden

ii. Accuracy class

iii.Accuracy limit factor

iv Instrument security factor

v Knee point voltage at

vi Secondary winding

resistance (Ret in Ohms)

vii Magnatising current at Vk/4

i. Rated burden

ii. Accuracy class

iii.Accuracy limit factor

iv Instrument security factor

v Knee point voltage at

vi Secondary winding

resistance (Ret in Ohms)

vii Magnatising current at Vk/4

12 Current error at rated primary current :

13 Phase displacement at rated primary current :

14 Composite error at rated accuracy limit primary current (%) :

15 Rated Short time current and duration :

Thermal (I th) (KA (rms) for 1sec :

Dynamic (1 dyn) [KA (peak)] :

16 Temperature rise of the windings (by resistance method) over an ambient temperature of 45° C :

At rated current (deg C) :

At 100% over load for 5 minutes (deg C) :

17 Partial discharge level :

18 Particulars of windings :

a) Primary Winding material :

Current density at rated current :

Size of conductor :

Class of insulation :

b) Secondary winding material :

Current density at rated current :

Size of conductor :

Class of insulation :

Resistance computed 75° C (Ohm) :

Insulating material used :

c) Rated Insulation level :

One minute power withstand voltage KV rms :

Intersection withstand voltage of primary :

windings KV rms :

Impulse withstand voltage KV peak :

19 Particulars of core :

Flux density (Tesla) at rated primary current at 15 times rated primary current :

Thickness of steel lamination(mm) whether CRGO steel stampings are used :

Watt/loss/kg of steel :

Knee point emf :

20 SUPPORT INSULATOR :

Name of Manufacturer :

Power frequency withstand voltage for one minute (KV rms) :

Dry lightning impulse withstand voltage 1.2/50 micro sec wave shape (KV peak) :

Visible Power frequency discharge voltage (KV rms) :

Creep age distance in air (mm) :

Weight of Porcelain housing bushing (kgs.) :

21 Overall dimension (mm) :

22 Weights (kg) :

1. Total weight of copper used :

a. Primary Winding :

b. Secondary Winding :

2. Weight of core (kg) :

a. Quantity of insulating oil (litres) :

b. Weight of insulation oil (kgs) :

4. Total Weight (kg) :

23 Particulars of terminal connector :

1. Name of the manufacturer :

Rated current (Amps) :

Temperature rise above an ambient of 45 :

Deg C at rated current (deg.c) :

At 150% of rated current for 15min(deg.c) :

CONTROL CABINET:

1 Manufacturer name

3 Design ambient ait temperature(0C)

4 Standred applicable

5 Thickness of sheet steel (mm) and whether cold rolled or hot rolled

6 Degree for protection provided

7 Bill of material for all the equipment mounted on control cabin giving the following details:

b. Applicable standred

c. Voltage rating

d. Current rating

e. Duty class, if catalogue No.

f. Manufacturer catalogue No.

g. Total heat load of cabinet (for purpose of ventilation requirement)

8 Colour of finish paintIS:5

9 Control wiring

a. Size conductor

i. For CT circuit

ii. For other circuits

b. Conductor solid stranded

c. Number of strands/conductor

TERMINAL blocks

10 a. Make & Type

b. Current terminals(A)

i. Power terminals(A)

ii. Other terminals(A)

11 Space heater rating at 240VAC

12 Control cabinet drawing showing the following

a. Out line dimentation, floor openings, Floor/wall/pedestal fixing arrangements, weights etc.

b. Front view, inside view, showing the Mounting arrangement of various Equipment.

13 Schematic / wiring diagram of Control Cabinet enclosed

14 Interconnection drawing showingcable, Connections to the control cabinet enclosed.

15 Type test report to verify degree of protection enclosed

16 Details of terminal row:

i. Whether arranged vertical or horizontal

ii. Clearence from adjacent components

iii. Distence between rows

iv. Whether transparent protection cover provided

SUPPORT INSULATOR

1 Manufacturer name

3 Applicable standards

ii. Diameter (Top)

iii. Diameter (Bottom)

5 Total creepage distance(mm)

6 Rated voltage (KV)

7 Power frequency withstand voltage for one minute (KV rms) dry and wet

8 1.2/50micro sec. Impulse withstand voltage(KVP)

9 250/2500micro sec. Switching impulse

10 Corona extinection voltage(KV)

12 Maximum allowable span(mm)

13 Cantilever strength(Kg)

14 OGA drawing enclosed

TERMINAL CLAMPS AND CONNECTORS

1 Manufacturer name

3 Applicable standards

4 Material of connector

b. Bolts & nuts

c. Spring washer

5 Rated current

6 a. Rated terminal load(Kg)

b. Factor of safety

7 Minimum thickness of any part(mm)

8 Weight clamp complete with hardware(Kg)

9 Type test report as per IS enclosed

10 OGA drawing enclosed

KARNATAKA POWER TRANSMISSION CORPORATION LIMITED

SCHEDULE- II TECHNICAL DEVIATION

ENQUIRY NO.KPTCL/SEE/Tr(Op)/Cir-South/EE(O)/AEE-2/JE-1/25-26/EPR-23 Dated: 26.02.2026 CALL-3

Tender for Design, manufacturing testing, and supply of 66KV Class Potential Transformers (0.2 Accuracy), 31.5KA rating of ratio 66KV/√3/110V/√3-110V/√3-110V/√3 (with Marshalling Boxes and without Mounting Structures) to various Sub-stations coming under Transmission (Operations) Circle-South

Please key in the SlNo., Volume , Section , Clause , Desc as given in Booklet and finally your Statement of Deviation/Variations.

This Sheet would be opened at the Techno-Commercial Opening.

For any further assistance for submitting your bids please call up KPTCL office. Please fill only in the blue coloured cells.

Please don’t insert your Bid values here or else your bid will not be considered for evaluation.

We agree to provide all original Documents in support of the information provided for verification upon request. (Key in as YES in the space provided)

We understand that the electonic bid submitted by us is a valid offer in accordance with IT Act. (Key in as YES in the space provided)

We are fully aware of the electronic bid formalities and abide by the same. (Key in as YES in the space provided)

If you are not deviating from any of the clauses mentioned please key in as 'NO DEVIATION' in the space provided.

TO, THE SUPERINTENDING ENGINEER (ELE), TRANSMISION OPERATIONS BMAZ (South) KPTCL, A.R CIRCLE, BENGALURU -09

The following are the Technical Deviations and Variations from and exceptions to the Specifications and documents Tender for Tender for Design, manufacturing testing, and supply of 66KV Class Potential Transformers (0.2 Accuracy), 31.5KA rating of ratio 66KV/√3/110V/√3-110V/√3-110V/√3 (with Marshalling Boxes and without Mounting Structures) to various Sub-stations coming under Transmission (Operations) Circle-South Specification No……….These deviations and variations are exhaustive.Except these deiviations and variations, the material shall be supplied as per specification and documents.

SlNO. SECTION CLAUSE NO. DESC. AS PER SPECIFICATION STATEMENT OF DEVIATIONS/VARIATIONS

Note : Deviations specified elsewhere in the specification will not be considered.

Date Name of the Firm

KARNATAKA POWER TRANSMISSION CORPORATION LIMITED

SCHEDULE- III COMMERCIAL DEVIATION

ENQUIRY NO.KPTCL/SEE/Tr(Op)/Cir-South/EE(O)/AEE-2/JE-1/25-26/EPR-23 Dated: 26.02.2026 CALL-3

Tender for Design, manufacturing testing, and supply of 66KV Class Potential Transformers (0.2 Accuracy), 31.5KA rating of ratio 66KV/√3/110V/√3-110V/√3-110V/√3 (with Marshalling Boxes and without Mounting Structures) to various Sub-stations coming under Transmission (Operations) Circle-South

This Sheet would be opened at the Techno-Commercial Opening. Please refer Vendor Manual attached for further details.

For any further assistance for submitting your bids please call up KPTCL Office.

We agree to provide all original Documents in support of the information provided for verification upon request. (Key in as YES in the space provided)

We understand that the electonic bid submitted by us is a valid offer in accordance with IT Act. (Key in as YES in the space provided)

We are fully aware of the electronic bid formalities and abide by the same. (Key in as YES in the space provided)

If you are not deviating from any of the clauses mentioned please key in as 'NO DEVIATION' in the space provided.

TO, THE SUPERINTENDING ENGINEER (ELE), TRANSMISION OPERATIONS BMAZ (SOUTH) KPTCL, A.R CIRCLE, BENGALURU -09

I have read each of the Clauses mentioned in INVITATION FOR BIDS , INSTRUCTION TO BIDDERS , GENERAL CONDITIONS OF CONTRACT, SPECIAL CONDITIONS OF CONTRACT and COMMERCIAL TERMS AND CONDITIONS.

The following are the commercial Deviations and Variations from and exceptions to the Specifications and Tender for Tender for Design, manufacturing testing, and supply of 66KV Class Potential Transformers (0.2 Accuracy), 31.5KA rating of ratio 66KV/√3/110V/√3-110V/√3-110V/√3 (with Marshalling Boxes and without Mounting Structures) to various Sub-stations coming under Transmission (Operations) Circle-South No……….These deviations and variations the matrix shall be suppliedas per your specifications and documents.

Sl. NO. SECTION CLAUSE NO. DESC. AS PER SPECIFICATION STATEMENT OF DEVIATIONS/ VARIATIONS

Note : Deviations specified elsewhere in the specification will not be considered.

THE SUPERINTENDING ENGINEER (ELE), TRANSMISION OPERATIONS BMAZ (SOUTH) KPTCL, A.R CIRCLE, BENGALURU -09

KARNATAKA POWER TRANSMISSION CORPORATION LIMITED

SCHEDULE- IV QUALIFYING REQUIREMENT DATA

ENQUIRY NO.KPTCL/SEE/Tr(Op)/Cir-South/EE(O)/AEE-2/JE-1/25-26/EPR-23 Dated: 26.02.2026 CALL-3

Tender for Design, manufacturing testing, and supply of 66KV Class Potential Transformers (0.2 Accuracy), 31.5KA rating of ratio 66KV/√3/110V/√3-110V/√3-110V/√3 (with Marshalling Boxes and without Mounting Structures) to various Sub-stations coming under Transmission (Operations) Circle-South

SHEET FOR TECHNO-COMMERCIAL OPENING

Please don’t insert your Bid values here or else your bid will not be considered for evaluation. Please fill only in blue coloured cells.

We agree to provide all original Documents in support of the information provided for verification upon request. (Key in as YES in the space provided)

We understand that the electonic bid submitted by us is a valid offer in accordance with IT Act. (Key in as YES in the space provided)

We are fully aware of the electronic bid formalities and abide by the same. (Key in as YES in the space provided)

TO, THE SUPERINTENDING ENGINEER (ELE), TRANSMISION OPERATIONS BMAZ (SOUTH) KPTCL, A.R CIRCLE, BENGALURU -09

Bidders Name and address :

Following (mentioned below) is the list of earlier order for……………... Complete in all respects executed by us,details of which are being furnished by us in the support of qualifying requirements for Tender for Design, manufacturing testing, and supply of 66KV Class Potential Transformers (0.2 Accuracy), 31.5KA rating of ratio 66KV/√3/110V/√3-110V/√3-110V/√3 (with Marshalling Boxes and without Mounting Structures) to various Sub-stations coming under Transmission (Operations) Circle-South

Turnover of the company for the past 5 years.

Capacity as in qualifying requirements.

Supplies done over the past 5 years.

Sl. No. Manufacturer Parameters of equipment desired as per qualifying requirements Qty. Purchaser P.O Ref and Date of Order Date of Supply Date of commissioning Remarks

Date Name of the Firm

KARNATAKA POWER TRANSMISSION CORPORATION LIMITED

SCHEDULE V Bid Form

ENQUIRY NO. KPTCL/SEE/Tr(Op)/Cir-South/EE(O)/AEE-2/JE-1/25-26/EPR-23 Dated: 26.02.2026 CALL-3

Tender for Design, manufacturing testing, and supply of 66KV Class Potential Transformers (0.2 Accuracy), 31.5KA rating of ratio 66KV/√3/110V/√3-110V/√3-110V/√3 (with Marshalling Boxes and without Mounting Structures) to various Sub-stations coming under Transmission (Operations) Circle-South

THE SUPERINTENDING ENGINEER (ELE), TRANSMISION OPERATIONS BMAZ (SOUTH) KPTCL, A.R CIRCLE, BENGALURU -09

Having examined the Bidding documents including Addenda Nos.

(Insert Number of sheets), the receipt of which is hereby duly acknowledged, we, the

undersigned, offer to supply and delivery

(description of goods and services in conformity with the said bidding documents and as

We undertake if our bid is accepted, to commence delivery within

(number) days and to complete delivery of all the items specified in the contract within

(numbers)days calculated from the date of receipt of your notification of Award

we agree to abide by this bid for a period of 180 days from the date fixed for bid opening under

clauses 16 of the instructions to bidders and it shall remain binding upon us and may be

accepted at any time before the expiration of that period.

until a formal contract is prepared and executed, this bid together with your written

acceptance thereof and you notification of award shall constitute a binding contract .

Place Desgination

THE SUPERINTENDING ENGINEER (ELE), TRANSMISION OPERATIONS BMAZ (SOUTH) KPTCL, A.R CIRCLE, BENGALURU -09

KARNATAKA POWER TRANSMISSION CORPORATION LIMITED

SCHEDULE VI ASSESSEMENT OF FINANCIAL CAPABILITY OF NEW FIRMS

KPTCL/SEE/Tr(Op)/Cir-South/EE(O)/AEE-2/JE-1/25-26/EPR-23 Dated: 26.02.2026 CALL-3

Tender for Design, manufacturing testing, and supply of 66KV Class Potential Transformers (0.2 Accuracy), 31.5KA rating of ratio 66KV/√3/110V/√3-110V/√3-110V/√3 (with Marshalling Boxes and without Mounting Structures) to various Sub-stations coming under Transmission (Operations) Circle-South

1 Name of the New Firm

3 Details of Material/ Workto be executed

4 Quantity tendered

Sl. Particulars

1 Total Turnover (Sales ) for the last three years Sl. No. Year

2 Annual turn over for the previous three years ( Capital Assets)

3 Liquid Assets

4 Current Ratio for the last year

5 Current Assets

6 Current Liabilities

7 Documents to be enclosed. 1 Audited Balance sheet for the last three years

2 Banker's /Financial Institutions endorsement for limit of Financial leading.

Place Desgination

THE SUPERINTENDING ENGINEER (ELE), TRANSMISION OPERATIONS BMAZ (SOUTH) KPTCL, A.R CIRCLE, BENGALURU -09

KARNATAKA POWER TRANSMISSION CORPORATION LIMITED

SCHEDULE - VII Commercial Terms and Conditions

ENQUIRY NO. KPTCL/SEE/Tr(Op)/Cir-South/EE(O)/AEE-2/JE-1/25-26/EPR-23 Dated: 26.02.2026 CALL-3

Tender for Design, manufacturing testing, and supply of 66KV Class Potential Transformers (0.2 Accuracy), 31.5KA rating of ratio 66KV/√3/110V/√3-110V/√3-110V/√3 (with Marshalling Boxes and without Mounting Structures) to various Sub-stations coming under Transmission (Operations) Circle-South

Sl. No. Terms & Conditions As per Tender To be furnished by the bidder

1 Name of the Firm To be furnished by the bidder

2 Place of Manufacture To be furnished by the bidder

3 Scope of the proposal Whether bidder agrees for the complete scope of proposal as per clause 2.0 of ITB

4 Power of Auttorney for signing the Documents To be furnished by the bidder

5 Bid Form To be furnished (Schedule V)

6 Bid Security/EMD As per clause 4.0 of NIT

7 Bid Validity 180 days from the date of opening of Technical Bids (Excluding the date of opening of Technical Bids)

8 Manufacturer /Supplier Should be supplier as per clause 5 of NIT

9 Experience As per clause 5 of NIT.

10 Quantity Tendered / offered as per clause 2.0 of NIT

11 Prices The tenderer shall quote Firm Price only (Refer clause No.13 of ITB)

12 Taxes & Levies (Refer clause no.12 of ITB)

13 Payment Terms (Refer clause No.25.0 of ITB)

14 Warranty/Guarantee (Refer clause no.26.0 of ITB)/clause 8 of Notification Inviting Tender(NIT)

15 Penalty for delay in supplies (Refer clause No.33.0 of ITB)

16 Delivery/Completion Schedule section -III, schedule of requirement and desired deliveries

17 Termination of contract (Refer clause no. 35.0 of ITB)

18 Performance Security Whether the performance security at 5% of the value of the contract is acceptable. (Refer caluse no.19.0 of ITB)

19 Guaranteed Technical Particulars To be furnished by the bidder as per Technical Specification

20 Whether any Litigation is there with KPTCL. (Refer IFB section clause 6) Furnish self declaration.

Name of the Company

Name of the Firm, Address & GSTIN Number