Tata Power CC25VJS009 Low Voltage Switchgear Control Panel User Guide

June 5, 2024
Tata Power

CC25VJS009 Low Voltage Switchgear Control Panel

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Product Information

Specifications:

  • Tender Reference: CC25VJS009
  • Bid Guarantee Fee / EMD: Rs. 2,00,000/-
  • Tender Fee: Rs. 2,000/-
  • Last Date for Payment of Tender Participation Fee: 8th May
    2024

Product Usage Instructions

Participating in the Tender:

Follow the steps below before the last date for payment of the
Tender Participation Fee:

  1. Submit the non-refundable Tender Fee as indicated in the table
    above.

  2. Submit a duly signed and stamped letter on Bidder’s letterhead
    with the following details:

    • Tender Enquiry number
    • Name of authorized person
    • Contact number
    • Email id
    • Details of submission of Tender Participation Fee
  3. Email the necessary attachments to vinayak.shinde@tatapower.com
    with a copy to pnramesh@tatapower.com.

After completing the above steps, interested bidders need to
submit the Tender Participation Fee and Authorization Letter before
the specified deadline. Once done, a link from Tata Power E-Tender
system (Ariba) will be shared for further communication and bid
submission.

All future correspondence related to the tender, bid submission,
date extensions, and queries will be through Tata Power E-Tender
system (Ariba). No email or verbal communication will be
entertained.

Important Notes:

  • If the deadline for Payment of Tender Participation Fee lapses,
    no bidder will receive the link from Tata Power E-Tender System
    (Ariba).

  • Any payment made by a bidder who has not completed the
    prerequisites will not be refunded.

  • All future updates or changes to the tender will be posted on
    the Tata Power website: https://www.tatapower.com.

Frequently Asked Questions (FAQ)

Q: How can I participate in the tender process?

A: To participate, follow the steps outlined in the
“Participating in the Tender” section above.

Q: What happens if I miss the deadline for payment of the

Tender Participation Fee?

A: If you miss the deadline, you will not receive the link from
Tata Power E-Tender System (Ariba) and won’t be able to participate
in the tender.

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The Tata Power Company Ltd
Tender Reference: CC25VJS009

OPEN TENDER NOTIFICATION Document Date: 7th May 2024

The Tata Power Company Limited Invites Tender through E-Tender Two-Part Bidding Process from interested bidders for the following package: –

A. Summary of the tendered package:

Sr. No.

Description

Tender Reference no.

Bid Guarantee Fee / EMD
(Rs.)

Tender
Fee (Rs.)

Last Date and Time for payment
of Tender Participation fee

For the following package please send mail to Mr. Vinayak Shinde (vinayak.shinde@tatapower.com) with copy to Mr. Rameshkumar P N (pnramesh@tatapower.com)

Corrigendum to Tender
issued vide advertisement 1. published dtd. 27th Apr 2024 – CC25VJS009
SITC of Switchgear for Mounte
South DSS

2,00,000/- 2,000 /- 8th May 2024

B. Procedure to Participate in Tender.

Following steps to be done before “Last date and time for Payment of Tender Participation Fee” as mentioned above

1. Non-Refundable Tender Fee, as indicated in table above, to be submitted in the form of

Direct deposit in the following bank account and submit the receipt along with a covering letter clearly indicating the Tender Reference number ­

Beneficiary Name ­ The Tata Power Co. Ltd.

Bank Name ­ HDFC Bank Ltd.

Branch Name ­ Fort Branch, Mumbai

Address ­ Maneckji Wadia Building, Nanik Motwani Marg, Fort, Mumbai 400023.

Branch Code ­ 60

Bank & Branch Code ­ 400240015

Account No ­ 00600110000763

Account type ­ CC

IFSC Code ­ HDFC0000060

2. Eligible and Interested Bidders to submit duly signed and stamped letter on Bidder’s letterhead indicating

Tender Enquiry number

Name of authorized person

Contact number

e-mail id

Details of submission of Tender Participation Fee

Property of Tata Power ­ Not to be reproduced without prior written permission of Tata Power

Page | 1

The Tata Power Company Ltd
Tender Reference: CC25VJS009

OPEN TENDER NOTIFICATION Document Date: 7th May 2024

E-mail with necessary attachment of 1 and 2 above to be send to vinayak.shinde@tatapower.com with copy to pnramesh@tatapower.combefore “Last date and time for Payment of Tender Participation Fee”
Interested bidders to submit Tender Participation Fee and Authorization Letter before Last date and time as indicated above after which link from Tata Power E-Tender system (Ariba) will be shared for further communication and bid submission.
Please note all future correspondence regarding the tender, bid submission, bid submission date extension, Pre-bid query etc. will happen only through Tata Power E-Tender system (Ariba).
No e-mail or verbal correspondence will be responded. All communication will be done strictly with the bidder who have done the above step to participate in the Tender.
Also it may be strictly noted that once date of “Last date and time for Payment of Tender Participation Fee” is lapsed no Bidder will be sent link from Tata Power E-Tender System (Ariba). Without this link vendor will not be able to participate in the tender. Any last moment request to participate in tender will not be entertained.
Any payment of Tender Participation Fee by Bidder who have not done the pre- requisite will not be refunded.
Also all future corrigendum’s to the said tender will be informed on Tender section on website https://www.tatapower.com only.

Summary of Changes

1

Date extension of submission of Expression of Interest till 8th May 2024

The original tender document is reproduced below.


Property of Tata Power ­ Not to be reproduced without prior written permission of Tata Power

Page | 2

The Tata Power Company Ltd
Tender Reference: CC25VJS009

OPEN TENDER NOTIFICATION Document Date: 27th Apr 2024

The Tata Power Company Limited Invites Tender through E-Tender Two-Part Bidding Process from interested bidders for the following package: –

A. Summary of the tendered package:

Sr. No.

Description

Tender Reference no.

Bid Guarantee Fee / EMD
(Rs.)

Tender
Fee (Rs.)

Last Date and Time for payment
of Tender Participation fee

For the following package please send mail to Mr Vinayak Shinde ( vinayak.shinde@tatapower.com)

with copy to Mr. Rameshkumar P N (pnramesh@tatapower.com).

SITC of Switchgear for Mounte South DSS

CC25VJS009

2,00,000/- 2,000 /- 6th May 2024

B. Procedure to Participate in Tender. Following steps to be done before “Last date and time for Payment of Tender Participation Fee” as mentioned above 1. Non-Refundable Tender Fee, as indicated in table above, to be submitted in the form of Direct deposit in the following bank account and submit the receipt along with a covering letter clearly indicating the Tender Reference number ­
Beneficiary Name ­ The Tata Power Co. Ltd. Bank Name ­ HDFC Bank Ltd. Branch Name ­ Fort Branch, Mumbai Address ­ Maneckji Wadia Building, Nanik Motwani Marg, Fort, Mumbai 400023. Branch Code ­ 60 Bank & Branch Code ­ 400240015 Account No ­ 00600110000763 Account type ­ CC IFSC Code ­ HDFC0000060 2. Eligible and Interested Bidders to submit duly signed and stamped letter on Bidder’s letterhead indicating Tender Enquiry number Name of authorized person Contact number e-mail id Details of submission of Tender Participation Fee

Property of Tata Power ­ Not to be reproduced without prior written permission of Tata Power

Page | 1

The Tata Power Company Ltd
Tender Reference: CC25VJS009

OPEN TENDER NOTIFICATION Document Date: 27th Apr 2024

E-mail with necessary attachment of 1 and 2 above to be send to vinayak.shinde@tatapower.com with copy to pnramesh@tatapower.com before “Last date and time for Payment of Tender Participation Fee”
Interested bidders to submit Tender Participation Fee and Authorization Letter before Last date and time as indicated above after which link from Tata Power E-Tender system (Ariba) will be shared for further communication and bid submission.
Please note all future correspondence regarding the tender, bid submission, bid submission date extension, Pre-bid query etc. will happen only through Tata Power E-Tender system (Ariba).
No e-mail or verbal correspondence will be responded. All communication will be done strictly with the bidder who have done the above step to participate in the Tender.
Also it may be strictly noted that once date of “Last date and time for Payment of Tender Participation Fee” is lapsed no Bidder will be sent link from Tata Power E-Tender System (Ariba). Without this link vendor will not be able to participate in the tender. Any last moment request to participate in tender will not be entertained.
Any payment of Tender Participation Fee by Bidder who have not done the pre- requisite will not be refunded.
Also all future corrigendum’s to the said tender will be informed on Tender section on website https://www.tatapower.com only.


Property of Tata Power ­ Not to be reproduced without prior written permission of Tata Power

Page | 2

The Tata Power Company Ltd
Tender Reference: CC25VJS009

OPEN TENDER NOTIFICATION Document Date: 27th Apr 2024

OPEN TENDER NOTIFICATION
FOR
SITC of Switchgear for Mounte South DSS
The Tata Power Company Limited (Tata Power)
Smart Center of Procurement Excellence,2nd Floor, Sahar Receiving Station, Near Hotel Leela,
Sahar Airport Road, Andheri East, Mumbai-400059

Property of Tata Power ­ Not to be reproduced without prior written permission of Tata Power

Page | 3

The Tata Power Company Ltd
Tender Reference: CC25VJS009

OPEN TENDER NOTIFICATION Document Date: 27th Apr 2024

Section A : Tender Notice including Instruction to Bidders
1. Tender Details 1.1 Key Tender Specific Details

Reference Number

CC25VJS009

Description

SITC of Switchgear for Mounte South DSS

Type of Tender

Firm Order

Estimated Period

Tender Fee

Rs 2000/-

Earnest Money Deposit Rs 2,00,000/-

(EMD)

Rs. Two Lakhs Only

Price Basis

Firm Price

Executive Handling Name: Mr. Vinayak Shinde

this Tender*

E-Mail ID: vinayak.shinde@tatapower.com

Technical Query *

Name: Mr. A V Potdar E-Mail ID: avpotdar@tatapower.com

*You may contact the above personnel from Monday to Friday during office hours only.

Property of Tata Power ­ Not to be reproduced without prior written permission of Tata Power

Page | 4

The Tata Power Company Ltd
Tender Reference: CC25VJS009

OPEN TENDER NOTIFICATION Document Date: 27th Apr 2024

1.2 Calendar of Events

Payment of Tender Fee and Submission

(a)

of letter nominating authorized person by Interested Bidder indicating their

Till 6th May 2024

intent to Buy Tender

Access to Tender Documents through E-

(b) Tender system to authorized person of 6th May 2024

Interested Bidder

(c)

Last Date of receipt of pre-bid queries, if any.

10th May 2024, 1500 Hrs.

(d)

Last Date of Posting Consolidated replies to all the pre-bid queries as received

14th May 2024

(e) Last date and time of receipt of Bids

27th May 2024

Note:- * These date and time are as planned and tentative. In case of change the same shall be intimated to Authorized Person of Interested Bidder through E-Tender System.

Please note post submission of Bids relevant communication will be done with Authorized Person of Interested Bidder through E-Tender System

1.3 Mandatory documents required along with the Bid

1.3.1 1.3.2 1.3.3 1.3.4 1.3.5 1.3.6

Bid Guarantee Fee (EMD) of requisite value and validity. PLEASE NOTE THAT BID GUARANTEE ONLY IN FORM OF BANK GUARANTEE WILL BE ACCEPTED. Requisite Documents to ascertain fulfilling of Technical and Commercial Pre-Qualification Requirement as detailed in Tender Enquiry. Technical Submission including Drawings, Type Test details etc as detailed in Technical Specification. Required Commercial Submission as detailed in Tender Document Technical and Commercial Clarification and Deviations as per the format attached in the Tender Enquiry Proper authorization letter to sign the tender and participate in Tata Power E-Tender system on the behalf of bidder.

1.3.7 For vendor not registered with Tata Power, Duly filled Vendor Registration form with all supporting documents is mandatory to participate in the Tender.

Please note that in absence of any of the above documents, the bid submitted by a bidder shall be liable for rejection.

Also please note that whenever editable format are shared it is requested that data be filled in relevant cells. No formatting or addition / deletion of rows / columns to be done. Wherever editable Excel submission are requested the file should be free from references, macros etc.

Property of Tata Power ­ Not to be reproduced without prior written permission of Tata Power

Page | 5

The Tata Power Company Ltd
Tender Reference: CC25VJS009

OPEN TENDER NOTIFICATION Document Date: 27th Apr 2024

Checklist of Document Submission

Stage of Tendering Document

Type of Format

Mode of submission

Before last date of Pre-Bid Query

Query / Clarification / Deviation (QCD) Format. (F1) Technical and Commercial

Editable Excel Format

Through message in Etender system

Bid Submission Envelope 1 (First Part)

Earnest Money Deposit Original Bank Guarantee

In Sealed Envelope

Bid Submission Envelope 2 (Second Part)

Documents to be uploaded in Ariba only. In case of multiple files, a zipped folder can be attached for the same (size limit of 100MB per zipped file)

To be submitted Duly filled PQR and supporting documents Under Tab 2.1 in Ariba

Duly filled PQR format Editable Excel Format E-Tender System

Backup documents for Technical and Commercial PQR

Signed and Scanned documents

E-Tender System

To be submitted Technical Submission and Supporting Documents under Tab 2.2 in Ariba

Duly filled Unpriced Bid

Format. Signed copy of

Technical Specifications

indicating

your

acceptance of the same

Signed and scanned copy of document

E-Tender System

To be submitted Commercial Submission and supporting document under Tab 2.3 in Ariba

Property of Tata Power ­ Not to be reproduced without prior written permission of Tata Power

Page | 6

The Tata Power Company Ltd
Tender Reference: CC25VJS009

OPEN TENDER NOTIFICATION Document Date: 27th Apr 2024

Letter of Undertaking (FOR VENDORS NOT REGISTERED WITH TATA POWER)

Scanned Copy of letter of undertaking duly filled, stamped and signed

E-Tender System

E-auction form

Undertaking

Scanned Copy of letter of undertaking duly filled, stamped and signed

E-Tender System

Bid

Submission Duly filled Priced Bid Hard copy in original Sealed Envelope

Envelope 3 (Third Format

duly signed and

Part)

stamped

Duly filled Priced Bid To be entered in E- E-Tender System

Format

Tender System

1.4 Deviation from Tender Normally, the deviations to tender terms are not admissible and the bids with deviation are liable for rejection. Hence, the bidders are advised to refrain from taking any deviations on this Tender. Still in case of any deviations, all such deviations shall be set out by the Bidders, clause by clause in the Query / Clarification / Deviation (QCD) Format. Deviations have to be mandatorily submitted in editable Excel sheet. Technical or Commercial Deviation should be mentioned in Deviation Format only. Deviation in any other document or Format will not be considered.
1.5 Right of Acceptance/Rejection
1.5.1 Bids are liable for rejection in absence of following:1.5.2 Mandatory Documents as listed in 1.3 above 1.5.3 Price Bid as per the Price Schedule mentioned in Tender Document 1.5.4 Receipt of Bid and Response to queries within the due date and time Tata Power reserves the right to accept/reject any or all the bids without assigning any reason thereof.

Property of Tata Power ­ Not to be reproduced without prior written permission of Tata Power

Page | 7

The Tata Power Company Ltd
Tender Reference: CC25VJS009

OPEN TENDER NOTIFICATION Document Date: 27th Apr 2024

1.6 Qualification Criteria
S.No. Description

Qualifying Criteria

Evaluation Documents Required

1

Self-undertaking to be

Bidder must be an OEM of Equipment with submitted in this regard.

Infrastructure

manufacturing facility / assembly in India. The bidder must have in-house routine and acceptance testing facilities for acceptance as per relevant IS/IEC

TATA Power reserves the right to inspect the said manufacturing facility as a proof of compliance to this

parameter.

2

Purchase Order Copies and

Completion Certificates.

Supply and Experience

The bidder must have supplied for same or higher size and voltage
a) A minimum of 12 nos switchgear panels during last 3 years or
b) A single order of 6 nos or c) Two orders of 4 nos last 3 years. Indian Subsidiaries of global companies having plant in India are also eligible to bid if the qualification requirements stated above are met independently or in combination with the parent company. Declaration from parent company needs to be submitted.

Self-undertaking to be

submitted

in

this

regard.Declaration

from

parent company needs to be

submitted. TATA Power

reserves the right to inspect

the said manufacturing

facility as a proof of

compliance

to

this

parameter.

The bidder should have performance Supply List & Performance

certificates for 2 year satisfactory performance Certificates from the utilities

from at least 2 reputed Distribution Utilities for

equipments of similar or higher rating. The

work against these issued certificates should be

3

completed in last seven years from the date of

Performance bid submission. In case the bidder has a

previous association with any of Tata Power

Groups for similar products and services, the

performance feedback for that bidder by Tata

Power User Group shall only be considered

irrespective of performance certificates issued

by any third organization.

4

Commercial Capability

Average Annual turnover of the bidder for last Copy of audited Balance

three years shall not be less than Rs 20 Crs

Sheet and P&L Account along

Property of Tata Power ­ Not to be reproduced without prior written permission of Tata Power

Page | 8

The Tata Power Company Ltd
Tender Reference: CC25VJS009

OPEN TENDER NOTIFICATION Document Date: 27th Apr 2024

S.No. Description

Qualifying Criteria

Evaluation Documents Required
with UDIN number to be submitted in this regard.

5 Type Test

The bidder shall submit Type test reports obtained from CPRI/ERDA/ International Accredited Lab for the equipment / material offered. The type tests should have been conducted on the equipment / material of the same design. The type tests should have been conducted within 5 years prior to the date of bid opening. Time period for type test can be extended by another 5 years as a special case, if there is no change in design / material of construction (MOC).

Type Test Report. Undertaking that there is no change in design / material of construction (MOC) if Type Test Report older than 5 years.

In case the type test reports furnished are not for the quoted equipment / material but for the equipment / material with higher voltage class and/or different capacity, then type test shall be carried out for the offered equipment / material from CPRI/ERDA / International Accredited Lab without any cost implication to the owner and the Type Test reports shall be submitted before dispatch of the equipment / material.

Type test reports for the

offered equipment / material

from

CPRI/ERDA/

International Accredited Lab

without any cost implication

to the owner and the Type

Test reports shall be

submitted along with BID.

1.7 Pre-Bid Queries

Technical or Commercial Pre-Bid Queries if any has to be sent through message in E-Tender System. Pre-Bid Query has to be sent only in the Query / Clarification / Deviation (QCD) Format. Pre-Bid Queries sent in any other format or send through any other communication channel will not be accepted and answered. Pre-Bid Query have to be sent in the stipulated timeline as defined in the Tender Document. No Pre-Bid Query will be accepted after the due time and date as specified as “Last Date of receipt of pre-bid queries, if any”

1.8 Marketing Integrity
We have a fair and competitive marketplace. The rules for bidders are outlined in the General Condition of Contracts and other parts of Tender Documents. Bidders must agree to these rules prior to participating. In addition to other remedies available, Tata Power reserves the right to exclude a bidder from participating in future markets due to the bidder’s violation of any of the rules or obligations contained in the General Condition of Contracts or other part of the Tender Documents. A bidder who violates the market place rules or engages in behavior that disrupts the fair execution of

Property of Tata Power ­ Not to be reproduced without prior written permission of Tata Power

Page | 9

The Tata Power Company Ltd
Tender Reference: CC25VJS009

OPEN TENDER NOTIFICATION Document Date: 27th Apr 2024

the marketplace, may result in restriction of a bidder from further participation in the marketplace for a length of time, depending upon the seriousness of the violation. Examples of violations include, but are not limited to:
Failure to honor prices submitted to the marketplace Breach of terms as published in TENDER
Submit irrelevant documents or frequently cases of missing documents as part of compliance to Qualifying, Technical or Commercial Requirements causing unnecessary delay in Tender Evaluation
1.9 Supplier Confidentiality
All information contained in this tender is confidential and shall not be disclosed, published or advertised in any manner without written authorization from Tata Power. This includes all bidding information submitted to Tata Power. All tender documents remain the property of Tata Power and all suppliers are required to return these documents to Tata Power upon request. Suppliers who do not honor these confidentiality provisions will be excluded from participating in future bidding events.
1.10 Payment Terms
100% payment shall be made within 60 days ( 45 days for MSME) from the receipt and acceptance of the material at the Consignee Stores/Site/Location as per the Contractual Terms and Conditions.
2. Evaluation Criteria
The bids will be evaluated technically on the compliance to tender terms and conditions.
The bids will be evaluated commercially on the overall all-inclusive lowest cost for the complete tender BOQ / each line item as calculated in Schedule of Items. Tata Power however, reserves right to split the order line item wise and/or quantity wise among more than one Bidder. Hence all bidders are advised to quote their most competitive rates against each line item.
Bidder has to mandatorily quote against each item of Schedule of Items. Failing to do so, Tata Power may reject the bids.
NOTE: In case of a new bidder not registered with Tata Power, factory inspection and evaluation shall be carried out to ascertain bidder’s manufacturing capability and quality procedures. However Tata Power reserves the right to carry out factory inspection and evaluation for any bidder prior to technical qualification. In case a bidder is found as Disqualified in the factory evaluation, their bid shall not be evaluated any further and shall be summarily rejected. The decision of Tata Power shall be final and binding on the bidder in this regard.

2.1 Price Variation Clause and Cap: Firm Price

Property of Tata Power ­ Not to be reproduced without prior written permission of Tata Power Page | 10

The Tata Power Company Ltd
Tender Reference: CC25VJS009

OPEN TENDER NOTIFICATION Document Date: 27th Apr 2024

3. Submission of Bid Documents
3.1 Bid Submission
Bidders are requested to submit their offer in line with this Tender document. Bids shall be submitted in 3 (three) parts:
FIRST PART: “EMD ­ BANK GUARANTEE” of Value detailed in 1.1 valid for 180 days from the due date of bid submission in the form of Bank Guarantee favoring `The Tata Power Company Limited’. The EMD has to be strictly in the format as mentioned in Tender Document, failing which it shall not be accepted by Tata Power and the bid as submitted shall be liable for rejection.
Note : BG of 180 days and further claim period of 180 days is needed. In case the same cannot be issued by your bank then BG valid for 365 days can be provided.
Note : At times bidders have sought Tata Power bank details which is needed by them to make BG. Hence the same is reproduced below. These details are only provided to facilitate making of BG if needed:
Tata Power’s Bank Details for submitting EMD BG:
Bank Name & Address ­ HDFC Bank, Maneckji Wadia Building, Nanik Motwani Marg, Fort, Mumbai 400 023. A/c no. – 00600110000763 IFSC Code ­ HDFC0000060
The hard copy of EMD in a sealed envelope should be sent on address mentioned in Tender document.
First Part has to be submitted in Sealed Envelope.
SECOND PART: “TECHNICAL / UN-PRICED COMMERCIAL BID” shall contain the following documents:
a) Documentary evidence in support of Technical, Commercial qualifying criteria b) Technical literature/GTP/Type test report/Details of Qualified Manpower Available/ Testing
Facility available etc. (complete in all respect as desired and detailed in Technical Specification and Technical Requirement Section) c) Duly filled Technical and Commercial Deviation Sheets d) Duly filled formats like Authorization affidavit form e) Unpriced Commercial Bid
The technical / un-priced commercial bid shall be properly indexed and is to be submitted in Soft Copy though E-Tender system of Tata Power. Hard Copy of Technical Bids need not be submitted.
Second Part has to be submitted through E-Tender System Only
THIRD PART: “PRICE BID” shall contain only the price details and strictly in Price Bid format along with explicit break up of basic prices and applicable GST. Basic price should include packaging forwarding, freight, transit insurance and any other cost envisaged by the bidder.
Third part has to be submitted through E-Tender System (ARIBA) only.
Property of Tata Power ­ Not to be reproduced without prior written permission of Tata Power Page | 11

The Tata Power Company Ltd
Tender Reference: CC25VJS009

OPEN TENDER NOTIFICATION Document Date: 27th Apr 2024

FOR BIDS INVITED THROUGH E-TENDER SYSTEM (TECHNICAL AND UN-PRICED COMMERCIAL BID) :
In response to advertisement Bidder has to provide details of person authorized to Bid on behalf of the Bidder. An e-mail will be generated by E-Tender System and the authorized person can download the Tender Documents from the system. SECOND and THIRD PART of the Bid have to be submitted in E-Tender System.
Bidders have to mandatorily submit SECOND PART (Technical and Un-priced commercial Bid) only through E-Tender system of Tata Power. Bids submitted through any other form/ route shall not be admissible.
EMD “Please mention Tender Reference No”
Please mention our Tender Reference No on the Tender and drop the same in our Tender Box located at The Tata Power Company Limited, Smart Center of Procurement Excellence,2nd Floor, Sahar Receiving Station, Near Hotel Leela, Sahar Airport Road, Andheri East, Mumbai-400059
Bids submitted by Email/Telex/Telegram /Fax will be rejected. No request from any Bidder to Tata Power to collect the proposals from Courier/Airlines/Cargo Agents etc. shall be entertained.
SIGNING OF BID DOCUMENTS:
The bid must contain the name, residence and place of business of the person or persons making the bid and must be signed and sealed by the Bidder with his usual signature. The names of all persons signing should also be typed or printed below the signature.
The Bid being submitted must be signed by a person holding a Power of Attorney authorizing him to do so, certified copies of which shall be enclosed.
The Bid submitted on behalf of companies registered with the Indian Companies Act, for the time being in force, shall be signed by persons duly authorized to submit the Bid on behalf of the Company and shall be accompanied by certified true copies of the resolutions, extracts of Articles of Association, special or general Power of Attorney etc. to show clearly the title, authority and designation of persons signing the Bid on behalf of the Company. Satisfactory evidence of authority of the person signing on behalf of the Bidder shall be furnished with the bid.
A bid by a person who affixes to his signature the word President’,Managing Director’, Secretary’,Agent’ or other designation without disclosing his principal will be rejected.
The Bidder’s name stated on the Proposal shall be the exact legal name of the firm.
3.2 Contact Information
Communication Details: Detailed in 1.1
3.3 Bid Prices
Bidders shall quote for the entire Scope of Supply/ work with a break up of prices for individual items and Taxes & duties. The bidder shall complete the appropriate Price Schedules included herein, stating the Unit Price for each item & total price with taxes, duties & freight up to destination at various sites of Tata Power. The all-inclusive prices offered shall be inclusive of all costs as well as Duties, Taxes and Levies paid or payable during the execution of the supply work, breakup of price constituents.
Property of Tata Power ­ Not to be reproduced without prior written permission of Tata Power
Page | 12

The Tata Power Company Ltd
Tender Reference: CC25VJS009

OPEN TENDER NOTIFICATION Document Date: 27th Apr 2024

The quantity break up shown else-where other than Price Schedule is tentative. The bidder shall ascertain himself regarding material required for completeness of the entire work. Any items not indicated in the price schedule but which are required to complete the job as per the Technical Specifications/ Scope of Work/ SLA mentioned in the tender, shall be deemed to be included in prices quoted.

3.4 Bid Currencies

Prices shall be quoted in Indian Rupees Only. It also may be noted that the denomination of Purchase Order / Outline Agreement / Rate Contract and associated Payment to Successful Bidder shall also be in Indian Rupees Only. In case Bidder intends to import any equipment, part etc and supply to Tata Power then all liability and costs related to import will rest with the Bidder. All statutory compliances, payments, expenditure etc related to importing of equipment will be responsibility of the bidder.

3.5 Period of Validity of Bids

Bids shall remain valid for 180 days from the due date of submission of the bid.

Notwithstanding clause above, Tata Power may solicit the Bidder’s consent to an extension of the Period of Bid Validity. The request and responses thereto shall be made in writing.

3.6 Alternative Bids

Bidders shall submit Bids, which comply with the Bidding documents. Alternative bids will not be considered. The attention of Bidders is drawn to the provisions regarding the rejection of Bids in the terms and conditions, which are not substantially responsive to the requirements of the bidding documents.

3.7 Modifications and Withdrawal of Bids

The bidder is not allowed to modify or withdraw its bid after the Bid’s submission. The EMD as submitted along with the bid shall be liable for forfeiture in such event.

3.8 Earnest Money Deposit (EMD)

The bidder shall furnish, as part of its bid, an EMD amounting as specified in the tender. The EMD is
required to protect the Tata Power against the risk of bidder’s conduct which would warrant forfeiture. The EMD shall be in following form:
Bank Guarantee valid for 180 days after due date of submission.
The EMD shall be forfeited in case of:

a) The bidder withdraws its bid during the period of specified bid validity.

Or

b) In case of a successful bidder, if the Bidder, within 15 days, does not

i)

accept the purchase order, or

ii) furnish the required Contract Performance Bank Guarantee (CPBG)

Original Bank Guarantee submitted as EMD shall be returned only after completion of award process for unsuccessful bidders and issue of Contract Performance Bank Guarantee (CPBG) for successful bidder.

Property of Tata Power ­ Not to be reproduced without prior written permission of Tata Power Page | 13

The Tata Power Company Ltd
Tender Reference: CC25VJS009

OPEN TENDER NOTIFICATION Document Date: 27th Apr 2024

4. Bid Opening & Evaluation process
4.1 Process to be confidential
Information relating to the examination, clarification, evaluation and comparison of Bids and recommendations for the award of a contract shall not be disclosed to Bidders or any other persons not officially concerned with such process. Any effort by a Bidder to influence Tata Powers processing of Bids or award decisions may result in the rejection of the Bidder’s Bid.
4.2 Technical Bid Opening
Bids will be opened at Corporate Office of Tata Power as per our standard Process. The bids shall be opened internally by Tata Power. Technical bid must not contain any cost information whatsoever.
First the envelope marked “EMD” will be opened. Bids without EMD of required amount/ validity in prescribed format, shall be rejected.
Next, the technical bid of the bidders who have furnished the requisite EMD will be opened in E-Tender system.
4.3 Preliminary Examination of Bids/Responsiveness
Tata Power will examine the Bids to determine whether they are complete, whether any computational errors have been made, whether required sureties have been furnished, whether the documents have been properly signed, and whether the Bids are generally in order. Tata Power may ask for submission of original documents in order to verify the documents submitted in support of qualification criteria.
Prior to the detailed evaluation, Tata Power will determine the substantial responsiveness of each Bid to the Bidding Documents including production capability and acceptable quality of the Goods offered. A substantially responsive Bid is one, which conforms to all the terms and conditions of the Bidding Documents without material deviation.
Bid determined as not substantially responsive will be rejected by the Tata Power and/or the Tata Power and may not subsequently be made responsive by the Bidder by correction of the nonconformity.
4.4 Techno Commercial Clarifications
Bidders need to ensure that the bids submitted by them are complete in all respects. To assist in the examination, evaluation and comparison of Bids, Tata Power may, at its discretion, ask the Bidder for a clarification on its Bid for any deviations with respect to the Tata Power specifications and attempt will be made to bring all bids on a common footing. All responses to requests for clarification shall be in writing and no change in the price or substance of the Bid shall be sought, offered or permitted owing to any clarifications sought by Tata Power.
4.5 Price Bid Opening
The EMD of the bidder withdrawing or substantially altering his offer at any stage after the technical bid opening will be forfeited at the sole discretion of Tata Power without any further correspondence in this regard.
Property of Tata Power ­ Not to be reproduced without prior written permission of Tata Power
Page | 14

The Tata Power Company Ltd
Tender Reference: CC25VJS009

OPEN TENDER NOTIFICATION Document Date: 27th Apr 2024

Arithmetical errors will be rectified on the following basis: If there is a discrepancy between the unit price and the total price per item that is obtained by multiplying the unit price and quantity, the unit price shall prevail and the total price per item will be corrected. If there is a discrepancy between the Total Amount and the sum of the total price per item, the sum of the total price per item shall prevail and the Total Amount will be corrected.
4.6 Reverse Auction and Price Matching Option
Tata Power reserves the right to go for Reverse Auction (RA) for price negotiation and discover the most competitive price on ARIBA portal, Tata Power’s official e-tendering platform. This will be decided after techno- commercial evaluation of the bids. Bidders need to give their acceptance with the offer for participation in RA. Non-acceptance to participate in RA may result in non-consideration of their bids, in case Tata Power decides to go for RA.
Only those bidders who are techno-commercially qualified shall be eligible to participate further in RA process. However, the original H1 bidder (whose price bid is the highest post technocommercial evaluation) shall not be allowed to participate in further RA process provided minimum three techno- commercially qualified bids are available.
For case where more than one bidders have to be awarded (including Rate Contract / Outline Agreement) Price Matching Option will be exercised. Volume of job allocated to original competitive bidder will be more than bidder who is chosen through Price Matching Option. Tata Power decision regarding work sharing shall be final and no explanation OR clarification shall be given regarding the same.
5.0 Award Decision
Tata Power will award the contract to the successful bidder whose bid has been determined to be the lowest-evaluated responsive bid as per the Evaluation Criterion mentioned at Clause 2.0. The Cost for the said calculation shall be taken as the all-inclusive cost quoted by bidder in Priced Bid Format subject to any corrections required in line with Clause 4.3 above. The decision to place purchase order/Outline Agreement/ Rate Contact solely depends on Tata Power on the cost competitiveness across multiple lots, quality, delivery and bidder’s capacity, in addition to other factors that Tata Power may deem relevant.
Tata Power reserves all the rights to award the contract to one or more bidders so as to meet the delivery requirement or nullify the award decision without assigning any reason thereof.
In case any supplier is found unsatisfactory during the delivery process, the award will be cancelled and Tata Power reserves the right to award other suppliers who are found fit.
5.1 Rate Contract / Outline Agreement
Rate Contract / Outline Agreement does not guarantee any assured business volume in Rupees or Quantity. Quantities are only indicative and specified for the purpose of readiness as per the request from Purchaser. Supplies shall be only against Firm Purchase Orders placed as per the agreed terms and conditions of Rate Contract / Outline Agreement. Purchaser shall be entitled at its discretion to place firm order for such supplies on “As and When Required Basis” without minimum take-off guarantee.
Property of Tata Power ­ Not to be reproduced without prior written permission of Tata Power
Page | 15

The Tata Power Company Ltd
Tender Reference: CC25VJS009

OPEN TENDER NOTIFICATION Document Date: 27th Apr 2024

Rate Contract / Outline Agreement will have list of Items with Unit Rate and applicable Taxes and Duties. There will be a cap on value for which order which can be placed against the Rate Contract / Outline Agreement. Actual quantity ordered for each line item may differ significantly from the tentative quantity indicated in the Tender Document. One / few / all items of Rate Contract / Outline Agreement can be ordered till the Cap Value is reached.
6.0 Order of Preference/Contradiction:
In case of contradiction in any part of various documents in tender, following shall prevail in order of preference:
1. Outline Agreement/Purchase Order (with Commercial conditions) 2. Special Terms and conditions (if applicable) 3. General Terms and conditions 4. Technical Specifications
In case there is a discrepancy in the BOQ mentioned in tender (to the extent modified through subsequent Corrigendum, if any) and the bid submitted by any bidder, the description as mentioned in the tender (to the extent modified through subsequent Corrigendum, if any) shall prevail.
7.0 Ethics
Tata Power is an ethical organization and as a policy Tata Power lays emphasis on ethical practices across its entire domain. Bidder should ensure that they should abide by all the ethical norms and in no form either directly or indirectly be involved in unethical practice.
Tata Power work practices are governed by the Tata Code of Conduct. Bidder is request to refer Tata Code of Conduct Clause in General Terms and Conditions.

8.0 General Condition of Contract and Special Condition of Contracts
Any condition not mentioned above shall be applicable as per General Terms and Conditions and Special Condition of Contracts attached along with this tender.
—XXX—

Property of Tata Power ­ Not to be reproduced without prior written permission of Tata Power Page | 16

The Tata Power Company Ltd
Tender Reference: CC25VJS009

OPEN TENDER NOTIFICATION Document Date: 27th Apr 2024

Annexure 1 Schedule Of Items

Sr. no. Material / Service Short Text (as per SAP)

1

SWITCHGEAR,AIS INDOOR O/G VCB,11KV,

2

SWITCHGEAR,AIS INDOOR I/C VCB,11KV,

3

SWITCHGEAR,AIS INDOOR B/C VCB,11KV,

4

SWITCHGEAR,AIS INDOOR BUS PT,11KV,

5

SWGR PANEL 33KV 1X 1600A W/CBL I/O & BCU

6

GATEWAY,RTU PANEL,FOR DSS,PREWIRED,

7 Inst, test & Comms

Total

GST

Total Value including GST

Total Amount with taxes in Words

(All Values to be entered in Indian Rs.)

Estimated UoM

Quantity

Unit Rate

(Basic)

7 EA 1 EA 1 EA 1 EA 1 EA 1 EA 1 EA

Total

Property of Tata Power ­ Not to be reproduced without prior written permission of Tata Power Page | 17

The Tata Power Company Ltd ENSE-DS-2036-R00

TECHNICAL SPECIFICATION OF 33kV INDOOR ICOG PANEL with BCPU relay
Date of Issue: 05/02/2024

TECHNICAL SPECIFICATION
33KV INDOOR ICOG PANEL with BCPU RELAY
The Tata Pow er Company Ltd. Engineering Services ( ENSE) ,
Distribution Division, Senapati Bapat Marg,
Low er Parel, Mumbai ­ 400013
M a ha ra sht ra

The Tata Power Company Ltd ENSE-DS-2036-R00

TECHNICAL SPECIFICATION OF 33kV INDOOR ICOG PANEL with BCPU relay
Date of Issue: 05/02/2024

TECHNICAL SPECIFICATION COVER SHEET Document No: ENSE-DS-2036-R00
Document Title: SPECIFICATION of 33 kV INDOOR ICOG PANEL with BCPU relay

For tender

purpose

00

(ENSE-DS-

08/02/24 Y.M.M.

2036-R00)

Remarks Rev
No.

Date

Initials

Sign

Prepared By

A.V.P.

Initials

Sign

Checked By

R.M.B.

Initials

Sign

Approved and Issued By

Rev No.

Prepared By & Date Yash M. Mane

R00 05/02/24

Checked By & Date Ajay V. Potdar
05/02/24

Approved for Issue By & Date
Ravindra M. Bhanage
05/02/24 Page 2 of 47|

The Tata Power Company Ltd ENSE-DS-2036-R00

CONTENTS

1. SCOPE

2. APPLICABLE STANDARDS

3. CLIMATIC CONDITIONS OF THE INSTALLATION

4. GENERAL TECHNICAL REQUIREMENTS

5. GENERAL CONSTRUCTIONS

6. NAME PLATE AND MARKING

7. TESTS

8. TYPE TEST CERTIFICATES

9. PRE-DISPATCH INSPECTION

10. INSPECTION AFTER RECEIPT AT STORES

11. GUARANTEE

12. PACKING AND TRANSPORT

13. TENDER SAMPLE

14. TRAINING

15. QUALITY CONTROL

16. TESTING FACILITIES

17. MANUFACTURING ACTIVITIES

`

18. SPARES, ACCESSORIES & TOOLS

19. DRAWINGS, DOCUMENTS

20. GUARANTEED TECHNICAL PARTICULARS

21. SCHEDULE OF DEVIATIONS

ANNEXURE-1, & 2

TECHNICAL SPECIFICATION OF 33kV INDOOR ICOG PANEL with BCPU relay
Date of Issue: 05/02/2024
4 4 5 5 7 31 31 34 34 35 35 35 35 35 36 36 36 36 37 38 45

Rev No.

Prepared By & Date Yash M. Mane

R00 05/02/24

Checked By & Date Ajay V. Potdar
05/02/24

Approved for Issue By & Date
Ravindra M. Bhanage
05/02/24 Page 3 of 47|

The Tata Power Company Ltd ENSE-DS-2036-R00

TECHNICAL SPECIFICATION OF 33kV INDOOR ICOG PANEL with BCPU relay
Date of Issue: 05/02/2024

1.0 SCOPE

2.0

APPLICABLE STANDARDS

This specification covers the technical requirements of design, manufacture, testing at manufacturer’s works, packing, forwarding, supply and unloading at site/store and performance of 33kV, 1250 AMP VCB panels complete with all accessories. It is not the intent to specify completely herein all details of the equipments nevertheless the equipment shall be complete and operative in all respects and shall confirm to the highest standard of engineering, design and workmanship of International Standards/IEC. The scope also covers installation, testing, commissioning of 33KV panels at site along with SCADA interfacing and associated earthing, inter panel wiring. The bidder shall be responsible for engineering and functioning of the complete system, meeting the intent and requirement of this specification and data sheets. Bidder should depute project manager at site for monitoring and coordinating commissioning activity.

It is not the intent to specify completely herein all the details of tech design and construction of material. However, the material shall conform to practices consistent with sound environmental management and local statues. It is also expected that equipment shall comply in all respects to high standards of engineering, design and workmanship and shall be capable of performing in continuous commercial operation in manner acceptable to the TATA POWER, who will interpret the meanings of drawings and specification and shall have the power to reject any work or material which, in his judgment is not in accordance therewith. The offered material shall be complete with all components necessary for their effective and trouble-free operation. Such components shall be deemed to be within the scope of Bidder’s supply irrespective of whether those are specifically brought out in this specification and/or the commercial order or not.
Note: Bidder shall be OEM of 33kV ICOG Indoor Breaker Panel. The equipment covered by this specification shall unless otherwise stated, be designed, manufactured and tested in accordance with latest editions of the following standards/IEC and shall conform to the regulations of local statutory authorities.

a) IEC 60068-1:2013: Environmental testing – Part 1: General and guidance

b) IS 2705: Current Transformers

c) IS 3156: Voltage Transformers

d) IS 16227-1: Instrument Transformers

e) IEC 62271-200: High-voltage Switchgear and controlgear

f) IS 694: PVC insulated cables for working voltage up to and including 1100V

g) IS 2629: Recommended practice for Hot Dip Galvanizing of iron & Steel

h) IS 2633: Test for uniformity of Zinc Coating.

i) IEC 60445:2021: Identification of equipment terminals, conductor terminations and

conductors

j) IEC 62053-22: Static meter for active energy (Class 0.2s and 0.5s)

k) IEC 60255: Measuring Relays and Protection Equipment

l) IEC 60529: Degrees of Protection provided by enclosures (IP Code).

m) IEC 62271-100: HIGH-VOLTAGE SWITCHGEAR AND CONTROLGEAR: Alternating

current circuit breakers.

n) IEC 62271-200: High voltage switchgear & control gear: Metal-Enclosed Switchgear

and Control gear.

o) IEC 62271-1: High voltage switchgear & control gear: Common specifications.

p) IEC 61010-1: Safety requirement for electrical equipment for measurement and

Laboratory use.

q) IEC 61850: Communication networks and systems for power utility automation (all

parts including

IEC 61850-8-1, IEC 61850-9-2).

Rev No.

Prepared By & Date Yash M. Mane

R00 05/02/24

Checked By & Date Ajay V. Potdar
05/02/24

Approved for Issue By & Date
Ravindra M. Bhanage
05/02/24 Page 4 of 47|

The Tata Power Company Ltd ENSE-DS-2036-R00

TECHNICAL SPECIFICATION OF 33kV INDOOR ICOG PANEL with BCPU relay
Date of Issue: 05/02/2024

CLIMATIC CONDITIONS OF 3.0 THE INSTALLATION

r) IEC 61588/IEEE 1588v2: Precision clock synchronization protocol for networked measurement and control systems
s) IEC 62351: Power systems management and associated information exchange Data and communications security.
t) IEC 60060 : High-voltage test techniques.

1 Maximum ambient temperature 2 Max. Daily average ambient temp 3 Min Ambient Temperature 4 Maximum Relative Humidity 5 Minimum Relative Humidity 6 Average No. of thunderstorm per annum
7 Average Annual Rainfall 8 Average No. of rainy days per annum 9 Rainy months 10 Altitude above MSL not exceeding 11 Average Air Pressure

43 deg.C 35 deg.C 07 deg.C 100% 40% 50
2380mm 115 June to Oct. 300 meters 29.6-inch Hg

Atmosphere is generally laden with mild acid and dust suspended during summer months and subjected to fog in winter months. The design of the equipment and accessories shall be suitable to withstand seismic forces corresponding to an acceleration of 0.1g.

GENERAL 4.0 TECHNICAL
REQUIREMENTS

Sr No.
1.0 1.1 1.2 1.3 1.4 1.5 1.6
1.7
1.8 1.9 1.10 1.11
1.12
2.0 2.1 2.2 2.3
2.4

Description

Requirement

SWITCHGEAR PANEL Architecture No. of Phases Rated Voltage Service Voltage Rated Frequency Rated Lightning Impulse withstand
voltage One Minute Power Frequency Withstand
Voltage Rated short time withstand current Peak withstand current rating Normal service condition Internal arc Protection
Degree of Protection Enclosure / Partitions / for meters, relay & BCU
BUS BAR Type Bus bar continuous rated current Bus bar material
Rated short time withstand current

Vacuum Insulated Metal Clad Three 36 kV 33 kV 50 Hz 170 kVp
70 kV rms
25 kA for 3 sec 62.5 kA Indoor IAC-A FLR as per IEC 62271-200, Shall withstand 25 kA for 1 sec. IP4X ­ Enclosure IP2X ­ Partitions IP5X or equivalent to completely
protect against dust ingress.
Extensible on both sides 1250 A Copper with Silver / Tinned Coated
contacts 25 kA for 3 sec

Rev No.

Prepared By & Date Yash M. Mane

R00 05/02/24

Checked By & Date Ajay V. Potdar
05/02/24

Approved for Issue By & Date
Ravindra M. Bhanage
05/02/24 Page 5 of 47|

The Tata Power Company Ltd

TECHNICAL SPECIFICATION OF 33kV INDOOR ICOG PANEL with BCPU relay

ENSE-DS-2036-R00

2.5

Max.

permissible temperature normal Current

Date of Issue: 05/02/2024
rated The maximum permissible current temperature for bus bar shall be as per IEC

3.0

CIRCUIT BREAKER FOR IC/OG (INCOMER AND OUTGOING FEEDER)

3.1

Application /Class

Indoor

3.2

Type of circuit

Vacuum (VCB)

3.3

No. of poles

3

3.4

Rated Voltage

36 kV rms

3.5

Rated Insulation Level

36 KV

3.6

Lighting impulse

170 kV peak

3.7

One minute power frequency withstand 70 kV rms

3.8

Rated frequency

50 Hz

3.9

Rates normal current

1250 A

3.10 Rated operating sequence

O-t-CO-T-CO (t=0.3sec, T= 3 min.)

3.11 Max. Spring Charging Time of Motor

10 sec

3.12 Max. Power consumption of Trip & close 100 W

coils

3.13 Rated load breaking current (sym)

25 kA rms

3.14 Rated short circuit withstand current

25 kA rms for 3 sec

3.15 Rated short circuit making current

62.5 kA peak

5.0

OPERATING AUXILIARY VOLTAGES

5.1

For Protection relays

220V DC

5.2

For Ant condensation Heaters

220V AC

5.3

Spring Charging Motor (Universal Motor) 230V AC

5.4

No. of spare auxiliary contacts with wring 8NO + 8 NC

6

VOLTAGE TRANSFORMER

6.1

Location

6.2

Type

6.3

Ratio

6.4

Core Details

i)

Accuracy class

ii)

Burden

Access from Front side of the panel and VT should be for incomer side
Plug In type, Dual ratio

33KV/3 / 110/3 -110/3

Core-I

Core-II

0.2

3P

50VA

50 VA

7 7.1 7.1.1 7.1.2 i)

CURRENT TRANSFORMER For Metering and Protection Ratio Burden & Class Core ­I

400 ­ 800 /5 -5 A 0.2S , 10VA; Isf < 5

Rev No.

Prepared By & Date Yash M. Mane

R00 05/02/24

Checked By & Date Ajay V. Potdar
05/02/24

Approved for Issue By & Date
Ravindra M. Bhanage
05/02/24 Page 6 of 47|

The Tata Power Company Ltd

ENSE-DS-2036-R00

ii)

Core ­II

7.3

For Differential Protection

i)

Ratio

ii)

Core- III

TECHNICAL SPECIFICATION OF 33kV INDOOR ICOG PANEL with BCPU relay
Date of Issue: 05/02/2024
5P20, 10 VA Incomer 400-800/5 A PS, 10 VA

GENERAL 5.0 CONSTRUCTION

5.1

Switchgear

1. All supplied Units shall be fitted with engraved metallic logo of “Tata Power” on the front side as per annexure.
2. The High Voltage Switchboard shall be metal-clad and shall comprise of standard prefabricated, CRCA sheet steel units assembled to form a rigid, freestanding, and deadfront structure. As a minimum, 2mm sheet steel shall be used for all front and rear doors and covers, and 1.6mm sheet steel for inter- panel partitions, Frame 3 mm, Removable Gland plate 3 mm. wherever required, stiffeners shall be provided to increase stiffness of large size doors and covers.
3. The switchboards shall be totally enclosed and vermin-proof. If necessary, openings for natural ventilation shall be provided. These shall be louvered and provided with wire mesh having opening less than 1mm. The enclosure shall have complete protection against approach to live parts or contact with internal moving parts.
4. Each unit of the switchgear shall have necessary internal sheet metal barriers to form separate compartments for circuit breaker, bus bars, instruments and relays, cable connections etc. Compartments for cable connections shall allow cable termination and connection work with the switchgear energised.
5. Independent pressure relief devices shall be provided for all HV compartments, i.e. bus bar, cable and breaker compartments and each compartment shall have type test certificate for withstanding internal arc fault.
6. All identical equipment and corresponding parts shall be fully interchangeable.
7. Safety barriers or shutters shall be provided to permit personnel to work safely within an empty compartment with the bus bars energised. The shutters should block the bus & cable compartments.
8. The opening of shutter shall be prevented when the breaker truck is racked out & either main bus or cable compartment is energised. Electrical interlock of cable side shutter & bus side shutter to be provided to prevent opening of shutters when breaker is racked out.
9. The draw out carriage on the switchboard shall have three positions: “Service”, “Test” and “Drawout” viz:
10. “Full in” or “Service” position – In this position both power and control circuits shall be connected. This shall be the normal operating position of the circuit breaker.

Rev No.

Prepared By & Date Yash M. Mane

R00 05/02/24

Checked By & Date Ajay V. Potdar
05/02/24

Approved for Issue By & Date
Ravindra M. Bhanage
05/02/24 Page 7 of 47|

The Tata Power Company Ltd

TECHNICAL SPECIFICATION OF 33kV INDOOR ICOG PANEL with BCPU relay

ENSE-DS-2036-R00

Date of Issue: 05/02/2024

11. “Test” position – The power contacts shall be disconnected in this position but the control connections shall not be disturbed, it shall be possible to close and trip the breakers in this position.

12. “Draw out” Position – both power and control circuits shall be disconnected in this position.

13. The circuit breaker shall be lockable in “service” and “test” positions. Automatic safety shutters shall be provided to ensure the inaccessibility of all live parts after the carriage is drawn out.

14. There shall be a distinct overall door for the breaker compartment, which can be closed with the carriage in draw out position and it shall be lockable type. All openings on the door shall be with a provision of padlock.

15. All circuit breaker modules of the same rating shall be inter-changeable. Suitable interlocks shall be provided to prevent the following operations: · “Plugging in” or “drawing out” of a closed breaker. · “Plugging in” a breaker with the earthing switch closed. · “Closing” of the earthing switch with the breaker “plugged in”. · Pulling out the auxiliary circuit plug with the breaker in the service position. · Pushing in the breaker to the service position, with the auxiliary circuit plug not in position. · All operations behind closed doors. · It should not be possible to open front door when circuit breaker is closed in service position. · Mimic to be provided on front fascia of panel. · The back door opening shall be possible only when cable is in dead condition.
· Castle key interlock or mechanical interlock to be provided in such a way that
for opening of back door castle key shall be required.
· Cable back charge indicating LED on front & rear side of panel is to be
provided.

16. All hardware shall be corrosion-resistant. All joints and connections of the panel members shall be made by zinc-passivated, or cadmium-plated, high- quality steel bolts, nuts and washers, secured against loosening.

17. Suitable removable type eyebolts shall be provided for the lifting of the panel/shipping section. These bolts, when removed shall not leave any opening in the panels.
18. Switch board shall be designed for IP 4X. The covers and doors should only be opened when the part of main circuit contained in the compartment being made accessible is dead. Partitions of metal-clad switchgear and control gear shall be metallic and earthed. All the meters, detachable units of relays, relays and BCPU shall be minimum IP5X (For Low voltage) or with an equivalent provision to completely protect it against dust ingress.
19. The overall dimension should not exceed 3.0 M X 2 M x 2.8 M (DXWXH).
20. All foundation equipment, anchor bolts etc. including the supporting channel shall be furnished by successful bidder along with despatch of panels. The bottom plates of the panels shall be fitted with removable gland plates not less than 3mm in thickness.

Rev No.

Prepared By & Date Yash M. Mane

R00 05/02/24

Checked By & Date Ajay V. Potdar
05/02/24

Approved for Issue By & Date
Ravindra M. Bhanage
05/02/24 Page 8 of 47|

The Tata Power Company Ltd ENSE-DS-2036-R00

TECHNICAL SPECIFICATION OF 33kV INDOOR ICOG PANEL with BCPU relay
Date of Issue: 05/02/2024

21. Indicating instruments and meters shall be at a suitable height so that the lettering on the display can be easily read. Control switches/push buttons and relay resetting knobs shall be conveniently located for ease of operation. The center lines of the switches push buttons and indicating lamps shall be not less than 900 mm from the bottom of the panel. The centre lines of relays, meters etc. shall be not less than 450 mm from the bottom of the panel matched. Isolating switch fuse units shall be provided at the panel for incoming AC and DC supplies. Push buttons shall be made of non-hygroscopic material with shrouds. All other insulator shall also be made of non- hygroscopic material.
22. All the HV design shall ensure conformity to IEC-62271-200 Appendix ‘A’ and must be Type tested for Internal Arc Test. It shall withstand 25 kA for 1 sec. The suppliers shall submit Type Test report from CPRI/ERDA accredited laboratory to prove the above. Auxiliary and control equipments installed on the panel shall be suitably protected against disruptive discharge from main circuit. Bus bars shall be insulated with heat shrinkable insulating sleeves, wherever bare conductor is employed.
23. All indicating lamps shall be of LED type and suitable for continuous operation at 85% to 110% of their rated voltage LED and replaceable from the front of the panel. The following indicating lamps with colour shall be mounted over switchgear to indicate important status/alarm of breaker
· Breaker ON———————– Red · Breaker OFF———————- Green · DC Fail —————————–Amber, · Space Heater not healthy —– Blue · Spring Charge——————– Blue · Trip coil healthy—————— White · Auto trip—————————- Amber · Breaker in service—————-Red · Breaker in Test——————–Service
PT back charge AC lamps should be provided R ph Healthy LED ——RED Y ph Healthy LED ——YELLOW B ph Healthy LED ——BLUE
All colour caps shall be similar and interchangeable and all LEDs shall be of same type and ratings. The LED lamps shall be furnished 20% in excess of actual numbers required.
24. All grounding system, special tools and tackles, O&M manuals etc. required for erection, operation, testing and maintenance of switch gear shall be supplied within the quoted price.
25. The offered equipment shall be brand new with state of art technology and proven field track record. No prototype equipment shall be offered. Vendor shall ensure availability of spare parts and maintenance support services for the offered equipment for at least for 15 years from the date of supply. Vendor shall give a notice of at least one year to us before phasing out the product/spares to enable the end user for placement of order for spares.
26. DC fail supervision relay (80) shall be provided on all control and relay panels. DC fail annunciation shall be provided on each panel and loss of DC & trip circuit fail alarm will be suitably annunciate at the panel as well as at the SCADA. All the relays and

Rev No.

Prepared By & Date Yash M. Mane

R00 05/02/24

Checked By & Date Ajay V. Potdar
05/02/24

Approved for Issue By & Date
Ravindra M. Bhanage
05/02/24 Page 9 of 47|

The Tata Power Company Ltd

TECHNICAL SPECIFICATION OF 33kV INDOOR ICOG PANEL with BCPU relay

ENSE-DS-2036-R00

Date of Issue: 05/02/2024

auxiliaries shall have DC auxiliary supply. Identification of components shall be in agreement with the indication on the wiring diagrams and drawings. If a component is of the plug-in type, an identification mark should be placed on the component and on the fixed part where it is to be plugged-in. Control cables are to be placed in trucking and it should be suitable to accommodate 20% wiring for future modifications. The disconnection type details are as follows

I)

Control supply in individual bay has to be distributed through MCBs of

suitable rating for individual control function like

· Protection Relay · Trip circuit ­ shorting links · Close circuits · Spring charging circuit · Heating and lighting circuit

II)

MCB shall be rated for 10kA short circuit rating. It shall be quick make, quick

break, and independent manual type with trip free feature. The DC MCBs

and AC MCBs ratings shall be separately mentioned and the panel having

AC MCB of higher rating in lieu of DC MCB shall not be accepted. MCB shall

have the following

· Over current protection · ON/OFF Trip position indicators · Auxiliary contact block (wherever required)

27. Wherever CB contacts are to be multiplied, latch type relay shall be used for contact multiplication. Auxiliary contact multiplier relays shall be reputed make and selected on the basis of continuous Current carrying capacity and rated voltage. The fluctuation in voltage level shall be accounted for (+/-) 10% continuously.

28. Fuse failure relay and trip circuit supervision relay shall be suitably selected, considering burden and auxiliary voltage. External circuitry like compensating resistances will not be accepted. Separate Trip circuit supervision relay not required if it is part of numerical relay.

29. Each switchgear panel shall have 20% spare terminals. The terminals should be droppable type. All equipments mounted on front side of the panel shall have individual nameplates with equipment designation engraved. Alarms for Trip & non-trip should be separate. The termination links for cables shall be segregated in vertical plane. The bidder shall deliver to site completely assembled, wired, tested panels and only the interconnecting cables shall be connected at site. The Bay Control unit shall have the provision to communicate with the future data concentrator in IEC 60870 -5-103 VDW implementation without any additional hardware.

30. Feeder protection, and transformer differential protection relays shall be considered alongwith the switchgear panel.

31. CT, PT, TRIP, CLOSE CT links shall be different coloured coded for easily identification in breaker panels for all Incoming and Outgoing panels.

32. CT, PT, breaker name plate details shall be embossed on front, back side of breaker panel.

Rev No.

Prepared By & Date Yash M. Mane

R00 05/02/24

Checked By & Date Ajay V. Potdar
05/02/24

Approved for Issue By & Date
Ravindra M. Bhanage
05/02/24 Page 10 of 47|

The Tata Power Company Ltd ENSE-DS-2036-R00

TECHNICAL SPECIFICATION OF 33kV INDOOR ICOG PANEL with BCPU relay
Date of Issue: 05/02/2024

33. Separate doors section shall be provided for cable and bus compartment separately with handle arrangement.
34. LOTO lock arrangement shall be provided for Cable compartment, Bus compartment and breaker compartment separately.
35. Cable back charge indication shall be provided on Front & Rear side of Cable compartment.
36. The back door opening shall be possible only when cable is in dead condition.
37. Castle key interlock or mechanical interlock to be provided in such a way that for opening of back door castle key shall be required.
38. All TB’s in breaker control panel shall be DISCONNECTING Type
39. Extender of breaker plug is required which is used for breaker test in removed position.
40. Hygrostat with space heaters to be provided in bus bar & cable compartment. Hygrostat shall be communicable type with Temperature & humidity data on central server through RS485 port.
41. All auxiliary relays like contact multiplier, Transformer Device relays, Lock out relay shall be fast acting numerical relays with flag indication.
42. Status/indication of all draw out type power equipment’s to be made available locally.
43. RYB Nomenclature/paint marking required on all Bus Bar and accessible location.
44. Status contact shall be used for only one application in control schematics.
45. Direct trip from relay BO to Trip coil also to be configured & indicated in the drawing for all panels.
46. Cut off timer to be considered for spring charging motor. Soft drop off timer required in CFC logic in series with Spring Charging Bl to keep the Close permissive High till the time spring remains discharged.
47. Separate Status contact shall be used for relay Bl’s and local indication Lamp.
48. Relay DC supply and Trip Circuit Supervision shall not be under the same DC MCB. Separate MCB for relay to be provided.
49. The shutter mechanism in the breaker cubicle shall operate automatically i.e. when the breaker truck is racked in or out. Shutters provided shall comply with IP2X.
50. The bidder can also consider Centralised Protection System with intelligent merging unit.
51. The bidder shall provide auxiliary relays for Transformer devices ­ PRV Main tank,

Rev No.

Prepared By & Date Yash M. Mane

R00 05/02/24

Checked By & Date Ajay V. Potdar
05/02/24

Approved for Issue By & Date
Ravindra M. Bhanage
05/02/24 Page 11 of 47|

The Tata Power Company Ltd

TECHNICAL SPECIFICATION OF 33kV INDOOR ICOG PANEL with BCPU relay

ENSE-DS-2036-R00

Date of Issue: 05/02/2024

OSR ­ OLTC, Buccholz, MOG Main tank, MOG OLTC, OTI, WTI

5.2 Circuit Breaker

a. Vacuum circuit breakers shall be used in the switchboard. Breaker transport trolleys required for cassette mounted breakers shall be provided for each switchboard.
b. The breaker shall be of class M2, E2 [w/o auto reclosing duty], and C2. The breaker shall be encapsulated with no live part exposed within breaker chamber.
c. Vacuum circuit breakers shall be designed to have low switching-over voltage levels and with a long switching life. The interrupter shall be leak- free.
d. The breakers shall have at least 4 normally open (NO) and 4 normally closed (NC) spare auxiliary contacts for purchaser’s use. If these are not available, auxiliary relays shall be used to multiply the auxiliary contacts of the breakers.
e. The breakers shall have a motor-operated, spring-charged mechanism. It shall also be possible to charge the springs manually. The closing spring shall get re-charged (for subsequent closing) soon after a closing shot and prior to breaker tripping. In case the limit switch fails to cut out the spring charging motor with the springs fully charged, the motor shall be automatically decoupled.
f. The control circuit shall be suitable for local as well as remote control. Breakers shall be trip-free and shall have an anti-pumping device. The breaker operating duty shall be O-0.3 sec-CO-3 min CO.
g. Operating Mechanism: Electric power operating mechanism shall be motor wound spring charged stored energy type. However, manual-operating mechanism may be of the spring charging stored energy type or the spring assisted type. For circuit breakers with electrical power operating mechanism, provision shall also be made for manual spring charging. Closing time of circuit breakers with manual operating mechanism shall be independent of the speed of the operating handle.
h. All stored energy operating mechanism shall be equipped with following features.
· Failure of springs, vibrations or shocks shall not cause unintended operation of breaker or prevent intended tripping operation.
· Closing of circuit breakers shall be prevented unless the spring is fully charged. i. All electrical power operating mechanisms shall be suitable for remote operation and
shall be equipped with following features.
· Provided with universal motor operable on AC or DC control supplies.
· Provided with emergency manual charging facility. The motor shall be automatically, decoupled (mechanically) once the manual-charging handle is inserted.
· Closing operation of circuit breaker shall automatically initiate charging of the spring for the next closing operation without waiting for tripping of circuit breaker.
· Closing operation shall be completed once the closing impulse is given and the first device in the control scheme has responded even though the control switch / Push Button is released provided no counter trip impulse is present.
j. Circuit breaker trip and closing coils in case of electrically operated breakers and trip coil in ease of mechanically operated breakers and circuit breaker indication shall be suitable for satisfactory operation on a control supply system indicated in data sheets/job specification.
k. All circuit breakers shall be provided with mechanically operated emergency trip device. This device shall be available on the front of the panel. Mechanically operated ‘closing’ device shall be provided for all breakers. However mechanical closing shall be inhibited for all circuit breakers in service position.
l. The breakers shall be provided with anti-pumping & trip free provision. Each breaker shall be also provided with an operation counter.
m. Line PT shall be mounted in a separate draw out carriage. In case of truck mounted breaker, line PT shall be provided in a separate panel
n. The complete breaker assembly should have inter-changeability with breakers of

Rev No.

Prepared By & Date Yash M. Mane

R00 05/02/24

Checked By & Date Ajay V. Potdar
05/02/24

Approved for Issue By & Date
Ravindra M. Bhanage
05/02/24 Page 12 of 47|

The Tata Power Company Ltd

TECHNICAL SPECIFICATION OF 33kV INDOOR ICOG PANEL with BCPU relay

ENSE-DS-2036-R00

Date of Issue: 05/02/2024

identical ratings. o. Breaker shall be with temperature sensor for monitoring the temperature. p. The Limit switch base in breaker shall have better material having long life.

5.3 BUS BARS AND CONNECTORS

1. The switchboard shall comprise of 3-phase bus bars which shall extend through all units of the switchgear line-up. The main bus bars shall have uniform cross-section throughout their length, and shall be sized to carry continuously the rated current specified in the data sheet.
2. Bus bars shall be of high conductivity electrolytic copper supported on insulators made of non-hygroscopic, non-inflammable material with tracking index equal to or more than that defined in Indian standards.
3. Bus bars shall be housed in a separate chamber and shall be accessible for inspection. Wire guards shall be provided inside the enclosure to allow visual inspection of bus bars, to avoid accidental contact when the cover is removed.
4. Both bus bars and the supports shall be adequately sized and braced to withstand the specified short-circuit current for 1 second. Dynamic stresses shall be calculated on the basis of the specified peak short-circuit current. All bus supports shall be of non-carbonising material, resistant to acids and alkalis.
5. Bus bars shall be insulated by using heat-shrinkable sleeves. The sleeves shall be rated to withstand the system line-to-line voltage for 1 minute. This shall be verified by a type test in which the line voltage will be applied between the sleeved main bus bar and an aluminium foil wrapped closely around the insulation over a length of at least 500mm.
6. All bus bar joints and all tap-off connections from the main horizontal bus bars shall be provided with removable FRP shrouds.
7. Bus bars shall be prominently marked with red, yellow and blue colour rings for easy phase identification at regular interval and at every power tap off point.
8. The thermal design of the bus bars shall be based on installation of the switchgear in poorly ventilated conditions. The cooling air volume shall take into account only the bus bar enclosure.
9. The hot spot temperature for bus bars including joints at design ambient temperature shall not be formed and shall be as per IEC for normal operating conditions.
10. Only zinc passivated or cadmium plated high tensile strength steel bolts, nuts and washers shall be used for all bus bar joints and supports.
11. The current rating as defined for switchboard and components in data sheet/job specification are for design ambient temperature at site conditions and for being inside the cubicle at fully loaded condition. The vendor shall suitably derate the nominal rating to suit the above condition.
12. It shall be possible to earth all busbar sections in make-proof way.

5.4 CURRENT TRANSFORMER

1. Current transformers shall be cast-resin insulated. The primary and secondary terminals shall be marked indelibly and easily approachable for termination and testing etc.
2. Current transformers shall conform to IS: 2705. The short-time rating shall be equal to that of the switchboard. They shall be mounted on the stationary part of the switchboard. Protective CTs shall have an accuracy class of 5P and an accuracy limit factor greater than 10. CTs for instruments shall have an accuracy class of 0.2S and an instrument safety factor less than 5.0. One leg of the CTs shall be earthed.
3. Separate CT core of class PS shall be provided for Differential protection. 4. All CTs shall be star connected. 5. Proper access to each set of CTs shall be provided for repair / maintenance.

Rev No.

Prepared By & Date Yash M. Mane

R00 05/02/24

Checked By & Date Ajay V. Potdar
05/02/24

Approved for Issue By & Date
Ravindra M. Bhanage
05/02/24 Page 13 of 47|

The Tata Power Company Ltd

TECHNICAL SPECIFICATION OF 33kV INDOOR ICOG PANEL with BCPU relay

ENSE-DS-2036-R00

Date of Issue: 05/02/2024

6. The polarity of the primary and secondary windings of each transformer shall be clearly indicated at the respective terminals and in addition labels shall be fitted in a readily accessible position to indicate the ratio, class duty of each transformer. The CT ratios shall be as per the details specified in this specification’s; secondary shorting shall be done by black colour 2.5 sq. mm black wires.
7. The TTB should be provided for metering core with droppable links for Energy meter requirement.
8. The TTB details are as follows: DAV make 50 Amps, Screw type, front connection disconnecting type.
9. All the wires should be connected from top and bottom side and fixed top mounted on door.
10. The CTs in the panels & Spare CTs shall be applied with silicone paint.

5.5 Voltage Transformer

1. Voltage transformers shall be cast-resin insulated. The voltage transformers shall conform to IS: 3156. The voltage transformers shall be of draw out type, and shall be provided with 4 pole miniature circuit breakers with auxiliary contacts on the secondary side.
2. The draw out mechanism shall disconnect the VT from the bus bars. The primary connection shall be disconnected before the VT become accessible. Neutral point of the star connected VTs both on the primary and secondary sides shall be earthed in test position also.
3. The VTs shall have an over-voltage factor of 1.9 times for 30 seconds, and an accuracy class of 0.2 from 10% to 120% of normal voltage. VT selected shall be compatible with system grounding.
4. The primary rated voltage shall be equal to V/~3 (phase and neutral). 5. If not otherwise specified, the secondary voltage shall be 110 / Sq.rt of 3 V. The
burden and class of accuracy shall be as specified in SLD. 6. A separate truck should be provided for easy racking out/racking in the VT unit. 7. VPIS 2NO+2NC shall be present in each Outgoing feeder with 230V (+or-) 10% DC
aux voltage. 8. VT back charging lamp shall be provided on backside of individual breaker panel. 9. The VTs in the panels & Spare VTs shall be applied with silicone paint.

5.6 PROTECTION METERING & CONTROL

a) All the Bays (Incomer / Outgoing feeder switchgears) shall be provided with Integrated Bay Control, Protection & metering Unit (BCPU).
b) The BCPUs shall communicate at station level on IEC 61850 protocols and with local and existing remote master on IEC-104 protocol.
c) The BCPU shall support fibre-optic port (In and Out) for fault-tolerant fibre optic ring or RJ-45 port for making star connection at switch. Also the BCPU should support centralized parameterization and DR files downloading from remote.
d) The BCPUs shall have capability to communicate with multiple masters on independent network.
e) Web browsing feature should be available in BCPU. f) Provision of TTB to be made with respect to future revenue meter installation. All the
metering CTs/PTs (Bus PT) to be wired up to TTB for revenue meter installation. The meter size is 300X180X180. g) The 10 Nos. flag relays combiflex RXME1 fast acting type to be provided in the 33KV panels for transformer trouble identifications. h) Bidder to provide all necessary configuration, testing, health monitoring tools (Hardware & Software) for the proposed system. i) All droppable type links of Connect well (CDTTS) or elmax to be provided in the

Rev No.

Prepared By & Date Yash M. Mane

R00 05/02/24

Checked By & Date Ajay V. Potdar
05/02/24

Approved for Issue By & Date
Ravindra M. Bhanage
05/02/24 Page 14 of 47|

The Tata Power Company Ltd

TECHNICAL SPECIFICATION OF 33kV INDOOR ICOG PANEL with BCPU relay

ENSE-DS-2036-R00

Date of Issue: 05/02/2024

5.7 BCPU

panels. j) The Multi-Function Meters shall be Communicable to RTU on Rs485 MODBUS. This
can be eliminated by taking analog data from BCPU, current can be viewed in the BCPU itself & huge cabling work can be avoided. Aux supply shall be 220 V DC k) The buses to be supported with suitable insulators in order to avoid the vibrations. l) Overall design should be such that the Bay Control function is handled by the individual relays provided on the respective bays. m) Adequate spare DI /DO provision of BCU should be there for future station miscellaneous signals. n) Separate AC and DC MCB of 16 A to be provided for AC and DC. o) Extendable Circuit Breaker Test Plug for test purpose length of 10 Mts p) Locally copper bar to be installed in Control Panel as an extension of main Earth Bus. All peripherals body earthing are connected to copper bar through green color 2.5 sq mm wire. q) All CT Neutrals shall be grounded individually to the Copper Strip

  1. The offered BCPU shall have feeder protective elements having software algorithm based on Sampling of energized currents, analog to digital conversion and numerical handling.

  2. The BCPU shall support over current / Earth fault protection function. (50/51 Ph & N) With definite Time or inverse time over current characteristic. Broken conductor function shall be provided

  3. The inverse characteristics shall as per IEC which should include normal inverse, very inverse, Extremely inverse, long inverse curves and shall be soft ware selectable at site.

3a) BCPU should have minimum 2 nos. independent selectable setting groups.

3b) Circuit Breaker failure protection: BCPU should have a feature of circuit breaker failure protection, which generates another trip signal if the breaker fails to trip on fault, which can be wired to upstream breaker trip coil.

  1. The BCPU shall have minimum 3 PT inputs and 4 CT inputs with ring type lugs termination facility, which can be used as 3 Nos. over current and 1 Earth fault.

  2. BCPU shall have configurable binary input, which can be used to develop blocking based scheme and minimum five nos. of freely configurable output contacts. BCPU shall have adequate BIs and BOs required for Local and Remote monitoring and control. BCPU shall be modular & expandable to accommodate the required BIs and BOs for monitoring and Control. Separate contact outputs shall be used for remote control (SCADA open/Close) and Trip functions.

  3. The Input shall have galvanic isolation. The trip out put contact should be capable of controlling the circuit breaker and shall be programmable for either hand reset or selfreset.

  4. The BCPU enclosure shall be dust tight having degree of protection minimum as IP5X.

  5. The BCPU must have facility for local settings and control through front keypad from relay itself. Relay should have facility of online relay setting i.e. it should be possible to alter setting without switching off breaker.

  6. The offered BCPU shall have LCD display for monitoring and control, settings, status, measurement and fault data & indication. It shall also have Fixed function LEDs for fault

Rev No.

Prepared By & Date Yash M. Mane

R00 05/02/24

Checked By & Date Ajay V. Potdar
05/02/24

Approved for Issue By & Date
Ravindra M. Bhanage
05/02/24 Page 15 of 47|

The Tata Power Company Ltd

TECHNICAL SPECIFICATION OF 33kV INDOOR ICOG PANEL with BCPU relay

ENSE-DS-2036-R00

Date of Issue: 05/02/2024

trip, relay healthy, control supply ON & Relay out of service.

  1. BCPU shall have comprehensive self-diagnostic feature with indication of relay failure on relay front and alarm should be generated without tripping the feeder. However, while diagnostic algorithm runs, it must not interfere in the main protective relay circuit and allow working of main protective circuit continuously.

  2. The BCPU shall support FDR (Fault disturbance Recording) for minimum 5 Nos. of latest fault trip records.

  3. The BCPU shall support metering function (of CL0.2) for Energy (trivector parameters), and panel metering (Line currents, voltage, PF etc). The Energy Measurements shall be as per 3-wattmeter method. Bidder shall mention the accuracy of all analog measurements.

  4. No separate earth bus shall be required for the BCPUs. It shall be possible to connect the relay earth to the common earth bus in the substation.

  5. The offered relay must be immune to any kind of electromagnetic interference. Vendor to submit all related type test reports for the offered model along with the offer.

  6. The relay should conform to the requirements of IS: 3231 / IEC60255 standards with respect to features/ construction/design etc.

  7. The relay shall have built in communication facility for hooking the relay on MMI / upstream communication system. Manufacturer of relays having their own Substation Automation System shall be preferred. So that they shall be possible to provide a system solution also if required in future.

  8. BCPU software should be supplied along with relays for viewing and downloading measurement, fault records and to carry out easy settings of relays locally.

  9. BCPUs shall be suitable for flush mounting type and consisting of multifunctional draw out type modules.

  10. BCPU should have direct connectivity to the Copper ground bus of the switchgear installation.

  11. BCPU relay PCB’s and other electronic devices should be CONFORMAL coated.

  12. BCPU should have minimum of 16 Binary Inputs and 10 Binary Output Channels for Substation and other Aux. Signals.

  13. The BCPU for differential protection shall have minimum 3 PT inputs & 8 CT Inputs with ring type lugs termination facility. The BCPU Differential relay shall have biased current differential numerical protection with REF, and Directional O/C & E/F protection. It should include the following features:

Vector group compensation.

CT ratio correction.

Biased differential protection.

Rev No.

Prepared By & Date Yash M. Mane

R00 05/02/24

Checked By & Date Ajay V. Potdar
05/02/24

Approved for Issue By & Date
Ravindra M. Bhanage
05/02/24 Page 16 of 47|

The Tata Power Company Ltd ENSE-DS-2036-R00

TECHNICAL SPECIFICATION OF 33kV INDOOR ICOG PANEL with BCPU relay
Date of Issue: 05/02/2024

High-set. Element of suitable setting range
2nd and 5th Harmonic restrains.
Transformer trouble alarm/ Trip e.g. Bucholz / PRD / Winding Temp / Oil Temp etc. shall be taken as binary inputs in the differential BCPU as a common input indicating “Transformer trouble”. However, auxiliary Flag relays shall be provided independently for Transformer trouble and trip along with the panel.
BCPU shall be suitable for both residually connected CT input as well as CBCT input. BCPU shall have 2 CT inputs separately for NCT in 33 KV INCOMERS

  1. Protection against CT, PT transients, CT saturation blocking feature to be provided in BCPU relay
    Tata Power Approved Relays

Application Make-1 Siemens
Transformer 7UT61 Differential Relay

Make-2 ABB RET620

Make-3

Make-4 Areva

Schneider

——— MICOM P642

Feeder

7SJ66

, REF615/REF620

P3

protection 7SJ63

Relay

7.0 Communication software of BCPU

Relay
REF615
REF620
REF630
7SJ63 7SJ66 7UT61 P3

Make
ABB
ABB
ABB
Siemens Siemens Siemens Schneider

Software PCM 600 2.7 PCM600 2.6
PCM 600 2.6
PCM 600 2.5 PCM 600 2.6 P-Set 04.67.01 Digsi 4.92 Digsi 4.92 Easergy

——

Note: 1. All higher version software should be capable of communicating with old version relay or support should be provided interms of providing appropriate software/Firmware. For siemens relay the vendor should supply digsi software installed laptops as single laptop does not support multiple digsi version.

Rev No.

Prepared By & Date Yash M. Mane

R00 05/02/24

Checked By & Date Ajay V. Potdar
05/02/24

Approved for Issue By & Date
Ravindra M. Bhanage
05/02/24 Page 17 of 47|

The Tata Power Company Ltd ENSE-DS-2036-R00
1. HMI (Front Display):

TECHNICAL SPECIFICATION OF 33kV INDOOR ICOG PANEL with BCPU relay
Date of Issue: 05/02/2024

1.1. The intuitive user interface and the various communication interfaces allow easy control and monitoring of the switchgear units, simple and comprehensive setting as well as access to readings of extensive recordings.
1.2. It shall be possible to equip the BCPU with a large HMI for local control, visualization of single line diagrams with analog, alarms and overview of service status (Breakers and Isolators).
1.3. The graphical display shall be easily configured by means of symbol library.
1.4. The HMI shall include LEDs for status indication and at least 15 configurable LEDs for alarm indication.
1.5. The front display shall be able to work in harsh environment, and temperature up to 70°C.
1.6. Vendor to deliver the HMI display, which shall not blacken out after in use of the BCU life time.

2. Communication Ports:
2.1. A galvanic isolated front port shall be available for connection of a personal computer for configuration.
2.2. At least 2 No. Fiber optic port IN and OUT, for fault tolerant fiber- optic ring, RJ-45 port for making star connection at switch.
2.3. 2 Nos. IP ports are required and each port would have capability of communicating minimum 8 no. of SCADA masters simultaneously.

3. Protocols:
3.1. IEC 61850-8-1, communication protocol shall be available. The BCPU shall meet the IEC 61850 standard in every respect. Interoperability and interchangeability and with other manufacture’s BCPU and tools will be preferred.

Rev No.

Prepared By & Date Yash M. Mane

R00 05/02/24

Checked By & Date Ajay V. Potdar
05/02/24

Approved for Issue By & Date
Ravindra M. Bhanage
05/02/24 Page 18 of 47|

The Tata Power Company Ltd

TECHNICAL SPECIFICATION OF 33kV INDOOR ICOG PANEL with BCPU relay

ENSE-DS-2036-R00

Date of Issue: 05/02/2024

3.2. Data exchange is to be realized using IEC 61850 protocol with a redundant

managed switched Ethernet communication infrastructure.

3.3. All the BCPUs must be fully IEC 61850 compliant and must have the following features.

Have peer-to-peer communication using GOOSE messages (IEC 61850) for interlocking/ protection schemes.

Should be interoperable with third party IEC 61850 compliant devices

Should generate XML file for integration/engineering with vendor independent SCADA systems.

Should be directly connected to the fiber optic ring and communicating on IEC 61850 without the use of any gateways.

3.4. IEC61850 GOOSE messaging shall be used to transmit BI’s data quickly on the fiber optic LAN to reflex automation/protection schemes.

3.5. IEC 61850 support – Interoperability table shall be provided

4. Communication Architecture:

4.1. The BCPUs shall be connected on Fiber Optic 10/100 Mbps network with ring topology and communicate with each other as well as Gateway using IEC61850 with GOOSE message.
4.2. The communication shall be made in fiber optic fault tolerant ring, excluding the links between EM to individual bay BCPUs to switch wherein the redundant connections are not envisaged, such that failure of one set of fiber shall not affect the normal operation of the switchgear.
4.3. However failure of fiber shall be alarmed on Purchaser’s SCADA System. Each fiber optic cable shall have minimum two (2) spare fibers.
4.3 BCPU’s should have front RJ45, serial usb or DB-9(RS 232) port for front or direct communication with laptop. In case of DB-9 port vendor has to provide RS232 to USB converter with BCPU’s.
5. Algorithm and Logic:

Rev No.

Prepared By & Date Yash M. Mane

R00 05/02/24

Checked By & Date Ajay V. Potdar
05/02/24

Approved for Issue By & Date
Ravindra M. Bhanage
05/02/24 Page 19 of 47|

The Tata Power Company Ltd ENSE-DS-2036-R00

TECHNICAL SPECIFICATION OF 33kV INDOOR ICOG PANEL with BCPU relay
Date of Issue: 05/02/2024

5.1. The BCPU shall be based on advanced and proven algorithms and an easy and efficient upgrade of the BCPU functionality shall be possible.
5.2. The application software within the control/protection devices shall be programmed in a functional block language.

5.3. The BCPU shall be provided with programmable logic for tripping and indications as well as a sufficient number of logic blocks and timers for user adaptation.

5.4. Command is always to be given in two stages: selection of the object and command for operation under all mode of operation except emergency operation. Final execution shall take place only when selection and command are actuated (Selectbefore-execute).

5.5. It shall also be possible to interconnect and derive input and output signals, logic functions, using built-In functions, complex voltage and currents, additional logics (AND-gates, OR gates and timers). (Multi- activation of these additional functions should be possible).
5.6. A delay/integrator shall allow the pick-up and reset of binary signals to be delayed before being displayed or used to control other functions.

5.7. Refer below matrix for controlling of the switchgear.

PANEL
REMOTE REMOTE LOCAL LOCAL

BCPU
REMOTE LOCAL REMOTE LOCAL

SCADA OPEN
Y N N N

SCADA CLOSE
Y N N N

BCPU OPEN
N Y N N

BCPU CLOSE
N Y N N

TNC OPEN
N N Y Y

TNC CLOSE
N N Y Y

6. Self-Supervision:

6.1. The BCPU shall have extensive self-supervision including analog channels.
6.2. Each BCPU shall be independent from each other and its functioning shall not be affected by any fault occurring in any of the other bay control units of the station.
6.3 Command execution timer (configurable) must be available for each control level point. If the control Action is not completed within a specific BCPU time, the command

Rev No.

Prepared By & Date Yash M. Mane

R00 05/02/24

Checked By & Date Ajay V. Potdar
05/02/24

Approved for Issue By & Date
Ravindra M. Bhanage
05/02/24 Page 20 of 47|

The Tata Power Company Ltd

TECHNICAL SPECIFICATION OF 33kV INDOOR ICOG PANEL with BCPU relay

ENSE-DS-2036-R00

Date of Issue: 05/02/2024

should get cancelled (Run Time Command cancellation). In case of restoration of

communication links, power supply after failure, the Software along with hardware shall

be capable of automatically synchronizing with the remaining System without any

manual intervention.

7. Disturbance & Event Recording:

7.1. The protection system shall include an inbuilt disturbance recorder function in each bay unit, which shall record
· 10 analog parameters including bay phase currents, voltages
· Minimum of 20 binary signals.
· Last 5 disturbances.
The sampling frequency of this disturbance recorder function shall be selectable from 2400 Hz, 1200 Hz or 600 Hz at 50 Hz. The recording period shall be at least 1.5 s at 2400 Hz. Minimum 10 trigger signals shall be available.

7.2. The disturbance recorder buffer memory shall be of non-volatile type and shall not require the use of batteries.
7.3. It should be possible to record the sum of selected analog currents. Summation of currents to be confirmed on BCPU.
7.4. An event recorder that can handle up to 1000 time tagged events per disturbance and that can record the last 5 disturbances shall also be included. The event recorder buffer memory shall be of non-volatile type and shall not require the use of batteries.
7.5. It shall be possible to retrieve the disturbance and event recorder information based on Comtrade format from a remote location shall be made available up to the gateway for further processing by Master.
7.6. All recorded disturbance data from BCPU shall be automatically uploaded (event triggered or once per day) to a Purchaser’s SCADA Systems.
7.7. Automatic back up retrieval of relay database from remote should be possible.

Rev No.

Prepared By & Date Yash M. Mane

R00 05/02/24

Checked By & Date Ajay V. Potdar
05/02/24

Approved for Issue By & Date
Ravindra M. Bhanage
05/02/24 Page 21 of 47|

The Tata Power Company Ltd ENSE-DS-2036-R00

TECHNICAL SPECIFICATION OF 33kV INDOOR ICOG PANEL with BCPU relay
Date of Issue: 05/02/2024

8. Control and Monitoring:

8.1. The system shall incorporate the control, monitoring and protection functions specified, self-monitoring, signalling and testing facilities, measuring as well as memory functions, event recording and evaluation of disturbance records.
8.2. The BCPUs shall accept direct CT / PT inputs and provide the following minimum analog
Parameters at 0.2 class accuracy, · Phase & Neutral Currents
· Phase Voltages
· Active & Reactive Power
· Active & Reactive Energy (Import & Export)
· Power Factor
· Frequency
· Demand
8.3. Control of protection relay systems in or out of service shall be available through BCPU
8.4. The operation shall depend on the conditions of other functions, such as interlocking, synchro check (if any), etc.
8.5.The analog values acquired/calculated in bay control/protection/Energy meter unit shall also be displayed locally on the BCPU HMI and in the SCADA Systems. The abnormal values must be discarded if BCPU’s are used for analog measurements. The analog values shall be updated every 1 second.
8.6.Level of Operation with control rights along with sequence of operation to be clearly mentioned (Password Protection).
8.7. The commands are always to be executed in two stages: selection of the object and command for operation under all mode of operation except emergency operation.

Rev No.

Prepared By & Date Yash M. Mane

R00 05/02/24

Checked By & Date Ajay V. Potdar
05/02/24

Approved for Issue By & Date
Ravindra M. Bhanage
05/02/24 Page 22 of 47|

The Tata Power Company Ltd

TECHNICAL SPECIFICATION OF 33kV INDOOR ICOG PANEL with BCPU relay

ENSE-DS-2036-R00

Date of Issue: 05/02/2024

Final execution shall take place only when selection and command are actuated.

8.8.Command execution timer (user configurable) must be available for each Binary output. If the control action is not completed within a specified time, the command should get cancelled.

9. Power Supply:

9.1. Power supply modules from 48 to 250 V DC +/- 20 % shall be available 9.2. A redundant power supply module shall be available for the Gateway unit.

10. Time Synchronization:
10.1. Time synchronization will be effected through gateway.
10.2. Time synchronization interface: The unit shall be capable to synchronize the internal RTC via Communication ports on IEEE 1588,
10.3. Timing Accuracy: The bay control shall time-tag event reports to an absolute accuracy of 10 s or better Bay controls at different system locations shall have the same absolute minimum timing accuracy.
10.4. BCPU shall capable to get synchronized from main as well as redundant gateway.
11. BCPU parameter setting:
11.1. It shall be possible to access all protection and control (logic) BCPUs for reading the parameters (settings) from the Purchaser’s SCADA System or from a Central remote monitoring computer. The setting of parameters or the activation of parameter sets shall only be allowed after entering a password.
11.2. Level Wise enabling of settings with User Rights should be incorporated as per the Password protection.
12. Test Function:
12.1. Vendor to provide the detailed test procedure for testing the BCPU functionalities using IEC61850, GOOSE Messaging and protection scheme

Rev No.

Prepared By & Date Yash M. Mane

R00 05/02/24

Checked By & Date Ajay V. Potdar
05/02/24

Approved for Issue By & Date
Ravindra M. Bhanage
05/02/24 Page 23 of 47|

The Tata Power Company Ltd

TECHNICAL SPECIFICATION OF 33kV INDOOR ICOG PANEL with BCPU relay

ENSE-DS-2036-R00

Date of Issue: 05/02/2024

implemented/proposed. Vendor to ensure availability of the required Hardware and

software to test the above at the time of FAT and SAT.

12.2. The protection system shall support a test mode where it shall be possible to set or reset binary input Signals, signalling and tripping contacts individually or in groups.

12.3. All output relay contacts can be blocked via a setting and configuration program. Using the test function, it Shall be possible to set or reset signalling and tripping contacts individually.

12.4. A test sequencer for the local bay protection functions shall be part of the user interface program. Virtual Current, voltage and binary signals shall be programmable in a minimum of six different sequences to verify The correct operation of the respective functions and settings in the respective bay unit.

12.5. Vendor shall provide predefined saved cases for test sequence, during commissioning and for routine Maintenance.

12.6. Bidder should follow Standard BCPU IO wiring practice and Standard Alarm indication list. The same will be Shared and finalized during detail engineering.

10.0 Warranty
Vendor shall warrant that the equipment including software, hardware, firmware and associated documentation are free of defects in material and workmanship and from defects or faults in design, in so far as the equipment fails to meet the requirements of this technical specification, for a period of 60 months from the date of supply and 48 months from final acceptance by the purchaser after completion of 30 days trouble free operation whichever is the earliest. With respect to defects in equipment part, vendor’s liability is to make good by replacing the faulty equipment. It is the responsibility of the vendor to replace the faulty equipment within 7 working days. After replacement of the faulty equipment, the purchaser will return parts that are defective to the vendor. The vendor will cover the cost associated with the shipping of defective or failed items during warranty period. The new equipment, parts shall be delivered to the purchaser’s facility CIF (Cost, Insurance, and Freight) free of charge. With respect to software, the purchaser will notify the problem to the vendor, including a detailed description of the deficiency and associated condition. Vendor

Rev No.

Prepared By & Date Yash M. Mane

R00 05/02/24

Checked By & Date Ajay V. Potdar
05/02/24

Approved for Issue By & Date
Ravindra M. Bhanage
05/02/24 Page 24 of 47|

The Tata Power Company Ltd

TECHNICAL SPECIFICATION OF 33kV INDOOR ICOG PANEL with BCPU relay

ENSE-DS-2036-R00

Date of Issue: 05/02/2024

shall guide the purchaser for corrective action. If the same is not resolved, the

vendor shall depute his personnel to attend the same within 24 hours from the time

of reporting the problem. The system vendor will be fully responsible to resolve any

such deficiency reported by the purchaser.

With respect to third-party software and consumable parts supplied, the vendor shall

make reasonable effort to obtain the best warranties possible from the sub- vendor

thereof and assign to the purchaser any such warranties to the extent that such

warranties may be assigned to the purchaser. Vendor may consider longer

warranties than included in these specifications. Vendor shall extend all warranties

/guarantees to the purchaser, provided by sub-vendors, of duration longer than that

in this specification.

11.0 Upgrades and Modifications

  1. Vendor shall continuously keep the Purchaser informed of all Software and Hardware upgrades as & when these are released.
  2. Vendor shall supply upgrades of all installed software (both own and third party) for a period of five years from the date of system acceptance without any commercial implication.
  3. Vendor shall rectify all design defects and software bugs at no extra cost for a period of 5 years from the date of system acceptance.
  4. Vendor shall provide lifetime support (15 years) for the system, even if no upgrades are implemented. The system referred to above includes Vendor’s own as well as third party components.
  5. Vendor shall port the supplied software onto upgraded hardware (as per Vendor’s standard offerings) without additional Software License Fees.

12.0 Training The vendor shall include in his offer Training for Tata Power engineers. The training shall cover development, integration, installation and commissioning of both software & hardware components of the system. The training shall have two parts

  1. Training at Vendor’s / Collaborator’s Works(Before project commence) -5

weeks

  1. Training at Site

-5

weeks

manman-

Rev No.

Prepared By & Date Yash M. Mane

R00 05/02/24

Checked By & Date Ajay V. Potdar
05/02/24

Approved for Issue By & Date
Ravindra M. Bhanage
05/02/24 Page 25 of 47|

The Tata Power Company Ltd ENSE-DS-2036-R00

TECHNICAL SPECIFICATION OF 33kV INDOOR ICOG PANEL with BCPU relay
Date of Issue: 05/02/2024

5.8 AUXILIARY SWITCHES AND CONTACTORS
5.9 TERMINAL BLOCKS
5.10 ANTICONDENSATION HEATERS
5.11 INTERIOR LIGHTING AND

Bidder shall indicate per man-week rates for addition / deletion if any.
The vendor shall provide Classroom as well as hands-on training on the system. All required training materials such as system catalogues, test instruments, demo equipment, and simulation jigs, etc. shall be provided by the vendor. The training shall equip the Purchaser’s engineers for installation, commissioning, operation and postwarranty maintenance of hardware, software (Operating System, Administration and Applications), protocols and all third party systems.
Auxiliary switches shall be provided on all circuit breakers for local, remote & SCADA indication, control and interlocking. With each circuit-breaker there shall be supplied all necessary auxiliary switches, contactors and mechanisms for indication, protection, metering, control, interlocking, supervisory and other services. All such auxiliary switches shall be enclosed in dust free housing. Not less than four spare auxiliary switch ways shall be provided with each circuit breaker. All auxiliary switches shall be wired up to a terminal board on the L.V panel of the switchgear whether they are in use or not in the first instance and shall be arranged in the same sequence on all equipment.
a) The terminal blocks shall be 1100 V grade, 10 A rated, one piece moulded, complete with insulated barriers, stud type terminals, washers, nuts and lock nuts and identification strips. The terminal blocks for CT shall be of disconnecting type. Markings on the terminal strips shall correspond to wire numbers on the wiring diagrams. The terminal blocks shall be fully enclosed with easily removable covers and made of moulded noninflammable plastic material.
b) A minimum clearance of 250 mm between the first row of terminal blocks and the associated cable and plate shall be ensured. Also the minimum clearance between two rows of terminal blocks shall be 150mm.
c) All spare contacts and terminals of the panel mounted equipment and devices shall be wired to terminal blocks. All the TB’s shall be of single Decker type.
a) Acrylic cover for all the TTB’s to be provided.
a) Strip type space heaters of adequate capacity shall be provided in breaker compartment, cable compartment and bus compartment in each panel to prevent moisture condensation on the wiring and panel mounted equipment. Space heaters shall be rated for 240 V, 1 phase, 50 Hz supply. Heaters inside the panels shall not be mounted close to the wiring or any panel mounted equipment. Heaters shall be complete with either miniature circuit breakers nor with isolating switches, HRC fuse on phase and link on the neutral of the heater supply.
b) An adjustable type hygrostat (0 to 100% Humidity) shall be provided in the heater control circuit. The indication shall be provided for monitoring the healthiness of Space heater.
c) Heater shall have humidity control and shall be arranged to cut off when cubicle internal Humidity exceeds safe value. ‘Heater ON’ indication shall be also provided. Also, door limit switch and internal lighting shall be provided for LV compartment.
a) Each panel shall be provided with a compact fluorescent lighting fixture rated for 240 V, 1 phase, 50 Hz supply for the interior illumination of the panel during maintenance. The fitting shall be complete with switch-fuse unit and the Switching of the fitting shall be controlled by

Rev No.

Prepared By & Date Yash M. Mane

R00 05/02/24

Checked By & Date Ajay V. Potdar
05/02/24

Approved for Issue By & Date
Ravindra M. Bhanage
05/02/24 Page 26 of 47|

The Tata Power Company Ltd

TECHNICAL SPECIFICATION OF 33kV INDOOR ICOG PANEL with BCPU relay

ENSE-DS-2036-R00

RECEPTACLES

the respective panel door switch.

Date of Issue: 05/02/2024

5.12 POWER AND CONTROL SUPPLIES

b) Each panel shall be provided with a 240 V, 1 Phase, 50 Hz, 15 A, 5 Pin receptacle with switch. The receptacle with switch shall be mounted inside the panel at a convenient location.
a) Each control panel shall be provided with necessary arrangement for receiving, distributing, isolating and fusing of DC and AC supplies for various control, signalling, lighting and space heater circuits. The incoming and sub-circuits shall be separately provided with MCBs. Supply monitoring arrangement shall be provided. Selection of the MCB ratings shall be such as to ensure selective clearance of sub-circuit faults. Potential circuits for relaying and metering shall also be protected by MCBs.

b) If auxiliary voltages other than those specified are required, then necessary arrangement shall be made by the bidder within the panel to obtain the desired voltages by providing step-down transformers and inverter/converter, etc. However it is desired that no other control voltage shall be prevalent in the panel.

c) All fuses shall be HRC cartridge type conforming to relevant standards, mounted on plug-in type fuse bases and cover with locking arrangement for fuse link. All accessible live connection to fuse bases shall be adequately shrouded. Fuses shall have operation indicators for indicating blown fuse condition. Fuse carrier base shall have imprints of the fuse rating and voltage.

5.13 PANEL WIRING

a) Panels shall be supplied completely wired internally to equipment and terminal blocks and ready for the Purchaser’s external cable connections at the terminal blocks. Panel wiring shall be securely supported, neatly arranged by lacing and tying, readily accessible and connected to equipment terminals and terminal blocks. Flame retardant, plastic wiring channels/troughs with strap on plastic covers shall be used for this purpose. When panels are arranged to be mounted adjacent to each other all inter-panel wiring and connections between panels shall be provided by the Bidder.

b) All wiring shall be carried out with 1100 V grade, single core stranded copper conductor wires with PVC insulation. Extra flexible wires shall be used for wiring of devices mounted on moving parts such as swinging panels and doors. The minimum size of the stranded copper conductor used for panel wiring shall be as follows

i) All circuits except CT and PT circuits: 2.5 mm2 per lead grey colour ii) CT circuits: 4 mm2 per lead with colour coded PT circuit : 2.5 mm2 colour coded

The terminals are marked with the terminal number in accordance with the schematics and terminal diagram. The terminals do not have any function designation and are of the tension spring, screw type and plug-in type for inter panel wiring.

c) Longitudinal troughs extending throughout the full length of the panels shall be provided for inter panel wiring, for AC and DC supplies, PT circuits, annunciator circuits and other common services .Interconnections to adjacent panels shall be brought out to a separate set of terminal blocks located near the slots or holes meant for taking the interconnecting wires. Arrangements shall permit easy inter-connections to adjacent panels at site and wires for this purpose shall be provided by the bidder looped and bunched properly inside the panels.

Rev No.

Prepared By & Date Yash M. Mane

R00 05/02/24

Checked By & Date Ajay V. Potdar
05/02/24

Approved for Issue By & Date
Ravindra M. Bhanage
05/02/24 Page 27 of 47|

The Tata Power Company Ltd

TECHNICAL SPECIFICATION OF 33kV INDOOR ICOG PANEL with BCPU relay

ENSE-DS-2036-R00

Date of Issue: 05/02/2024

d) If accidental short circuiting of certain wires is likely to result in malfunction of equipment, such as closing or tripping of a breaker or positive and negative wires, these wires shall not be terminated on adjacent terminal blocks. The unused instrument space on the front or rear of the panels shall be kept clear of wiring, to facilitate addition of devices without rewiring associated portion of the panels.

e) Wire terminations shall be made with soldieries crimping type of (ring type lugs for all CT & PT circuits and pin type lugs for other circuits) tinned copper lugs which firmly grip the conductor and insulation. Insulated sleeves shall be provided at all the wire terminations. Engraved core identification plastic ferrules, marked to correspond with panel wiring diagram shall be fitted at both ends of each wire. Ferrules shall fit tightly on the wires and shall not fall off when the wire is disconnected. Lock in type ferrule shall be provided. There should be provision of cable tray for laying of BCPU looping cable on the top of the switchgear LT compartment.

f) Bidder shall be solely responsible for looping all protection relays up to the BCU/BCPU or DC as per the requirement. Network cable required to communicate BCU/BCPUs with DC shall be under bidder’s scope. Looping and networking cable shall be CAT-5 type. The Bidder shall be solely responsible for the completeness and correctness of the internal wiring and for the proper functioning of the connected equipment. In case the cables are to be routed through trenches, necessary metal clad conduits shall be used.

g) Internal wiring to be connected to external equipment shall terminate on terminal blocks. The terminal blocks for CTs and VTs shall be provided with test links and isolating facilities. The CT terminal blocks shall be provided with short circuiting and earthing facilities. Change of CT cores should be possible by linking & delinking of terminals. Switchgear shall have 20% terminals as spare terminals in each panel &should be uniformly distributed in all the terminal blocks and shall be wired. Note: Two wires shall not be crimped on a single lug.

CT Ferrules shall have reference of CT Core and CT Taps

5.14 CABLES TERMINATION :

  1. There should be provision of connecting 1 no 33KV, 3CX400 sq. mm, XLPE Al AR cables. There should be proper approach for manpower to work inside the cable compartments of incomer and outgoing section. Ample space for connection for these cables shall be provided at the rear of the switchboards.
  2. In order to avoid accidental contact in the cable compartment while carrying out inspection by opening the rear cover, a removable expanded metal barrier shall be provided in the cable compartment.
  3. Unless otherwise specified, the power cable shall enter the switchboard from the bottom.
  4. Non-magnetic cable gland plates shall be provided for feeders wherever single core cables are used.
  5. The switchboard shall be supplied complete with supports for clamping outgoing and incoming cables. The head-room available between cable gland plate and terminal lugs shall not be less than 800 mm for 33 kV cables.
  6. In case the standard panel depth cannot accommodate the specified no. of cables, a rear extension panel of full height shall be provided. An earth strip shall also be brought to this extension panel.
  7. Unless otherwise specified, all power cables shall enter the switchgear from the bottom.

Rev No.

Prepared By & Date Yash M. Mane

R00 05/02/24

Checked By & Date Ajay V. Potdar
05/02/24

Approved for Issue By & Date
Ravindra M. Bhanage
05/02/24 Page 28 of 47|

The Tata Power Company Ltd

TECHNICAL SPECIFICATION OF 33kV INDOOR ICOG PANEL with BCPU relay

ENSE-DS-2036-R00

Date of Issue: 05/02/2024

  1. A rear viewing window shall be provided on the cable chamber rear cover to inspect cable connection without opening rear cover. The material of this window shall be the same as that used in breaker chamber.

5.15 LABELS

a) All equipment mounted on front and rear side as well as equipment mounted inside the panels shall be provided with individual labels with equipment designation engraved. Also on the top of each panel on front as well as rear side, large and bold nameplates shall be provided for circuit/ feeder designation. The labels shall be mounted directly below the respective equipment.

b) All front mounted equipment shall be provided, at the rear also with individual labels engraved with tag numbers corresponding to the ones shown in the panel internal wiring to facilitate easy tracing of the wiring.

c) Each lED and meter shall be prominently marked. All relays and other devices shall be clearly marked with manufacturer’s name, type, serial number and electrical rating data.

d) Labels both external &internal shall be made on non-rusting metal preferably Aluminium anodized one. Labels shall have white letters on black background. The lettering size shall be 6 mm for panel designation and minimum 3mm for device labels. The label designations shall be subject to the Purchaser’s approval.

e) Each switch shall bear clear inscription identifying its function e.g. ‘BREAKER’ ’52A’ etc. Similar Inscription shall also be provided on each device whose function is not otherwise defined. If any switch device doesn’t bear this inscription, separate name plate giving its function shall be provided for it. Switch shall also have clear inscription for each position indication e.g. ‘Trip-Neutral-Close’, ‘ON-OFF’, ‘R-Y-B-OFF’ ETC.

f) Section differentiation marking, bus differentiation and phase differentiation marking shall be provided a visible colour coding as per Indian coding will be preferred.

5.16 EARTHING

a) All panels shall be equipped with a separate earth bus securely fixed along with the inside base of panels. When several panels are mounted adjoining each other, the earth bus shall be made continuous and shall be bolted with two bolts. Provision shall be made for future extension of the earth bus. Provision shall be made on the earth bus bars of the end panels for connecting the same to the earthing grid.

b) An earthing conductor of 40×10 sq.mm Cu (minimum) shall be provided extending the whole length of switchgear and control gear to sustain the Rated short time withstand current. Each equipment mounted in the panel shall be directly earth pad to this earth bus by distinct connections. Bidder shall provide separate electronic earthing for all LED’s. Separate earth bus bar to be run along switchgear for protection earthing of relays and communication equipments and LEDs and shall be insulated from the frame. Two bolts shall be provided for connecting the earthing conductor.

c) All metallic cases of relays, instruments and other panel mounted equipments shall be connected to the earth bus by independent copper wires of size not less than 4.0 sq.mm for VT and CT secondary neutral or common lead shall be earthed at one place only, preferably at the terminal blocks where they enter the panel. The colour coding for earthing wires shall be given. Bidder shall provide separate electronic earthing for all IEDs.

Rev No.

Prepared By & Date Yash M. Mane

R00 05/02/24

Checked By & Date Ajay V. Potdar
05/02/24

Approved for Issue By & Date
Ravindra M. Bhanage
05/02/24 Page 29 of 47|

The Tata Power Company Ltd ENSE-DS-2036-R00

TECHNICAL SPECIFICATION OF 33kV INDOOR ICOG PANEL with BCPU relay
Date of Issue: 05/02/2024

5.17 PAINTING

d) Looping of earth connections, which would result in loss of earth connection to the other devices when the loop is broken, shall not be permitted. However, looping of earth connections between equipment to provide alternative paths to earth bus shall be provided.
a) Individual Earthing bus shall be extended from main earth bus in each breaker panel for which all peripherals body earthing are connected through green colour 2.5 sq.mm wire.
b) All live/energized equipment shall have body earth and reference ground via copper strip or Copper wires of minimum 6 Sq mm.
All sheet steel work shall be phosphated in accordance with the IS: 6005 “Code of practice for phosphating iron and steel”. It should follow the seven tank process. Oil, grease, dirt and swarf shall be thoroughly removed by emulsion cleaning. Rust and scale shall be removed by pickling with dilute acid followed by washing with running water rinsing with a slightly alkaline hot water and drying. After phosphate, thorough rinsing shall be carried out with clean water followed by final rinsing with dilute dichromate solution and oven drying. The phosphate coating shall be sealed with application of two coats of ready mixed, stoved type zinc chromate primer. The first coat may be “flash dried” while the second coat shall be stoved. Thereafter an established painting procedure like electrostatic painting shall be followed for powder coating the panel. The colour shade shall be RAL 7032 (Grey). Minimum paint thickness of 120 micron is required.

5.18 GALVANIZING

a) All galvanizing shall be carried out by the hot dip process, in accordance with IS 2629/ ISO 1460 amended to date. However, high tensile steel nuts, bolts and spring washers shall be electro galvanized to service condition four. The zinc coating shall be smooth, continuous and uniform. It shall be free from acid spots and shall not scale, blister or be removable by handling or packing. There shall be no impurities in the zinc or additives to the galvanic bath, which could have a detrimental effect on the durability of the zinc coating.

b) After galvanizing no drilling or welding shall be performed on the galvanized parts of the equipment except that nuts may be threaded after galvanizing.

c) To avoid the formation of white rust, galvanized material shall be stacked during transport and stored in such a manner as to permit adequate ventilation. Sodium dichromate treatment shall be provided to avoid formation of white rust after hot dip galvanization. The galvanized steel shall be subjected to tests as per IS-2633/ BS 729 amended to date.

Approved Sub-vendor for bought out items: –

Sr. No 1
2
3 4 5 6

Items Epoxy Resin Cast C.T.
Epoxy Resin Cast P.T.
TTB TB HRC Fuse Space Heater

Approved sub vendor

Pragati

Make

/ECS/Huphen

Fabricator/Reputed as per OEM approved

Pragati

Make

/ECS/Huphen

Fabricator/Reputed as per OEM approved

DAV make & Model name is SSFS

Connectwell/Elmex

C&S / L&T /Equivalent

Girish Make

Rev No.

Prepared By & Date Yash M. Mane

R00 05/02/24

Checked By & Date Ajay V. Potdar
05/02/24

Approved for Issue By & Date
Ravindra M. Bhanage
05/02/24 Page 30 of 47|

The Tata Power Company Ltd ENSE-DS-2036-R00

TECHNICAL SPECIFICATION OF 33kV INDOOR ICOG PANEL with BCPU relay
Date of Issue: 05/02/2024

NAME PLATE AND MARKING:

All the components and operating devices of the switchgear shall be provided with durable and legible nameplates containing all technical parameters. Name plates shall be suitably embossed with” PO no. with date”, “PROPERTY OF Tata Power-‘ & “CODE NUMBER” along with the following information. A Danger plate of appropriate size shall also be provided on the enclosure.

6.0

NAME PLATE AND MARKING

a) Manufacturer’s Name b) Month and year of supply c) Type/Model d) Rated Voltage e) Rated current f) Service voltage g) System Frequency h) Rated Short time withstand current for 3 sec i) Rated Impulse withstand Voltage j) Degree of Protection k) Serial no.

CT & PT details to be mentioned at the rear cover of switchgear panel. The name plate of each functional unit shall be legible during normal service. The removable parts, if any shall have a separate nameplate with the data relating to the functional units they belong to, but this nameplate need only be legible when the removable parts is in removed position.

All the Routine, acceptance and Type tests shall be carried out in accordance with the relevant IS/IEC standards. All routine/acceptance tests shall be witnessed by the Purchaser/ his authorized representative. All the components should also be type tested as per the relevant standards. All meters and metering elements in BCU shall also be routine and type tested as per the relevant standards and shall further be tested at site by the successful bidder. For Type test of Numerical relays, control IEDs, and communication equipment, and Factory acceptance test, relevant IS/IEC has to be followed. Bidder shall also be responsible for conducting point to point testing of all gateway configurations on the site (SAT) after the installation. Bidder shall ensure integrated FAT of switchgear along with SCADA at one location along with RTU functional tests.

7.0

TESTS

Following tests shall be necessarily conducted on the switchgear in addition to the others specified in IS/IEC.

A) For Breaker panels

I) Type Tests 1.Test to verify the protection of person against dangerous electrical effects. 2.Electromagnetic compatibility Tests of Auxiliary and control circuits (Emission &
Immunity test) 3.Dielectric Test: Impulse & Power frequency 4.Internal Arc Test

Rev No.

Prepared By & Date Yash M. Mane

R00 05/02/24

Checked By & Date Ajay V. Potdar
05/02/24

Approved for Issue By & Date
Ravindra M. Bhanage
05/02/24 Page 31 of 47|

The Tata Power Company Ltd ENSE-DS-2036-R00

TECHNICAL SPECIFICATION OF 33kV INDOOR ICOG PANEL with BCPU relay
Date of Issue: 05/02/2024

5.Measurement of the resistance of the main circuits 6.Short-time withstand and Peak withstand current test 7.Verification of Degree of Protection. 8. Verify the Insulation level of the equipment including at power frequency test voltage
on auxiliary circuits. 9.Temperature Rise tests. 10. Short-circuit current making and breaking tests 11. Mechanical operation test at ambient temperature 12. Test to prove the satisfactory operation of the included switching device and
removable parts (Mechanical operation test) 13. Mechanical operation test II) Routine Tests 1. Dielectric test on main circuit 2. Tests on auxiliary and control circuits 3. Measurement of the resistance of the main circuit 4. Dimensions and visual checks 5. Mechanical operation test 6. Partial Discharge measurement

III) Acceptance Test 1. Dielectric test on main circuit 2. Tests on auxiliary and control circuits 3. Measurement of the resistance of the main circuit 4. Dimensions and visual checks 5. Mechanical operation test 6. Partial Discharge measurement

B) For Current Transformers
I) Type Tests a) Short time current Test b) Temperature rise Test. c) Lightning impulse tests

Rev No.

Prepared By & Date Yash M. Mane

R00 05/02/24

Checked By & Date Ajay V. Potdar
05/02/24

Approved for Issue By & Date
Ravindra M. Bhanage
05/02/24 Page 32 of 47|

The Tata Power Company Ltd ENSE-DS-2036-R00

TECHNICAL SPECIFICATION OF 33kV INDOOR ICOG PANEL with BCPU relay
Date of Issue: 05/02/2024

d) Determination of errors or other characteristics according to the requirements of the appropriate designation or accuracy class.

II) Routine Tests
a) Verification of terminal marking and Polarity b) Power frequency dry withstand tests on Primary Windings. c) Power frequency dry withstand tests on Secondary windings d) Over Voltage inter-turn test. e) Partial Discharge tests. f) Determination of errors or other characteristics according to the requirements of the appropriate designation or accuracy class. g) For PS class core ­ Knee point voltage & Excitation current, Secondary winding resistance, Turns ratio.

C) For Voltage Transformers
I) Type Tests a) Short time current Test b) Temperature rise Test. c) Lightning impulse tests d) Determination of errors or other characteristics according to the requirements of the appropriate designation or accuracy class.
II) Routine Tests a) Verification of terminal marking and Polarity b) Power frequency dry withstand tests on Primary Windings. c) Power frequency dry withstand tests on Secondary windings d) Partial Discharge tests. e) Determination of errors or other charterstics according to the requirements of the appropriates designation or accuracy class.
For CTs & PTs routine test reports from the OEM to be provided.
D) For Relays
I) Type Tests for Numerical Relays/ Devices:
1. Dielectric Withstand Test: IEC60255-5 2. High Voltage Impulse Test, class III: IEC 60255-5
(5 kV peak; 1.2/50 us; 0.5 J; 3 positive and 3 negative shots at interval of 5 sec.)

Rev No.

Prepared By & Date Yash M. Mane

R00 05/02/24

Checked By & Date Ajay V. Potdar
05/02/24

Approved for Issue By & Date
Ravindra M. Bhanage
05/02/24 Page 33 of 47|

The Tata Power Company Ltd

TECHNICAL SPECIFICATION OF 33kV INDOOR ICOG PANEL with BCPU relay

ENSE-DS-2036-R00

Date of Issue: 05/02/2024

3. DC Supply Interruption: IEC 60255-11 4. AC Ripple on DC Supply: IEC 60255-11 5. Voltage Dips and Short Interruptions: IEC 61000-4-11 6. High Frequency Disturbance: IEC 60255-22-1, class III 7. Fast Transient Disturbance: IEC 60255-22-4, class IV 8. Surge Withstand Capability: IEEE / ANSI C 37.90.1 (1989)

However, in case any type test is not carried out/carried out at In-house laboratories, the same shall be decided for acceptance as per the mutual agreement between the Purchaser and Bidder.

The bidder shall furnish the type test certificates for the tests as mentioned above as per the corresponding standards. All the tests shall be conducted at CPRI/ERDA laboratories as per the relevant standards. Type test should have been conducted in certified Test Laboratories during the period not exceeding 10 years from the date of opening the bid. In the event of any discrepancy in the test reports i.e. any test report not acceptable or any/all type tests (including additional type tests, if any) not carried out, same shall be carried out without any cost implication to TATA POWER LTD.

8.0

TYPE TEST CERTIFICATE

Type tests shall have been conducted in certified Test laboratories during the period not exceeding 10 years from the date of opening the bid. In case if type test conducted beyond 10 years then bidder to certify on letter head of parent OEM that no design change & no

manufacturing plant change occurred from type tested product.

In the event of any discrepancy in the test reports, i.e. any test report not acceptable or any/all type tests (including additional type tests, if any) not carried out, same shall be carried out without any cost implication to TATA POWER.

Bids without all type test report shall stand disqualified.

Equipment shall be subject to inspection by a duly authorized representative of the Purchaser. Inspection may be made at any stage of manufacture at the option of the purchaser and the equipment if found unsatisfactory as to workmanship or material is liable to rejection. The bidder shall grant free access to the places of manufacture to the Purchaser’s representatives at all times when the work is in progress. Inspection by the Purchaser or its authorized representatives shall not relieve the bidder of his obligation of furnishing equipment in accordance with the specifications. Material shall be dispatched after specific MDCC (Material Dispatch Clearance Certificate) is issued by the Purchaser. Following documents shall be sent along with material.

9.0

PRE-DISPATCH INSPECTION

a) Test reports b) MDCC issued by Tata power c) Invoice in duplicate d) Packing list e) Drawings & catalogue f) Hard copy of drawings g) Delivery Challan

Other Documents (as applicable)

All Document should be English Language

Rev No.

Prepared By & Date Yash M. Mane

R00 05/02/24

Checked By & Date Ajay V. Potdar
05/02/24

Approved for Issue By & Date
Ravindra M. Bhanage
05/02/24 Page 34 of 47|

The Tata Power Company Ltd ENSE-DS-2036-R00

TECHNICAL SPECIFICATION OF 33kV INDOOR ICOG PANEL with BCPU relay
Date of Issue: 05/02/2024

The material received at TATA POWER Store will be inspected for acceptance and shall be

INSPECTION

liable for rejection if found different from the reports of the pre-dispatch inspection and one

10.0 AFTER RECEIPT copy of the report shall be sent to Engineering department.

AT STORE

If any deviation or anomaly observed at this stage same need to be rectified by bidder at

bidders own cost at earliest.

11.0 GUARANTEE

Bidder shall stand guarantee towards design, materials, workmanship & quality of process / manufacturing of items under this contract for due and intended performance of the same, as an integrated product delivered under this contract. In the event any defect is found by the Purchaser up to a period of at least 48 months from the date of commissioning or 60 months from the date of last supplies made under the contract whichever is earlier, Bidder shall be liable to undertake to replace/rectify such defects at its own costs, within mutually agreed time frame, and to the entire satisfaction of the Purchaser, failing which the Purchaser will be at liberty to get it replaced/rectified at Bidder’s risks and costs and recover all such expenses plus the Purchaser’s own charges (@ 20% of expenses incurred), from the Bidder or from the ” Security cum Performance Deposit” as the case may be. In case of GP failure, BA shall report at site within 48 hours from intimation and arrange for rectification of fault within a mutually agreed time. In case rectification at site is not possible then alternative arrangement (replacement) to be made by BA within 15 days of intimation of failure. Bidder shall further be responsible for free replacement’ for another period of THREE years from the end of the guarantee period for anyLatent Defects’ if noticed and reported by the Purchaser.

Bidder shall ensure that all material covered under this specification shall be prepared for

12.0

PACKING AND TRANSPORT

rail/road transport (local equipment) and be packed in such a manner as to protect it from damage in transit. No single use plastic to be used in packaging. The packaging material shall be

environmentally friendly & recyclable.

13.0 TENDER SAMPLE Not applicable.

14.0 TRAINING

The vendor shall include in his offer Training for Tata Power engineers. The training shall cover development, integration, installation and commissioning of both software & hardware components of the system. The training shall have two parts

Training at Vendor’s / Collaborator’s Works(Before project commence)- 5 man- weeks

Training at Site

– 10 man-weeks

Bidder shall indicate per man-week rates for addition / deletion if any.

The vendor shall provide Classroom as well as hands-on training on the system. All

required training

materials such as system catalogs, test instruments, demo

equipment, and simulation jigs, etc. shall be provided by the vendor. The training shall

equip the Purchaser’s engineers for installation, commissioning, operation and post-

warranty maintenance of hardware, software (Operating System, Administration and

Applications), protocols and all third party systems.

Rev No.

Prepared By & Date Yash M. Mane

R00 05/02/24

Checked By & Date Ajay V. Potdar
05/02/24

Approved for Issue By & Date
Ravindra M. Bhanage
05/02/24 Page 35 of 47|

The Tata Power Company Ltd ENSE-DS-2036-R00

TECHNICAL SPECIFICATION OF 33kV INDOOR ICOG PANEL with BCPU relay
Date of Issue: 05/02/2024

15.0

QUALITY CONTROL

MINIMUM 16.0 TESTING
FACILITIES

The bidder shall submit with the offer, assurance plan indicating the various stages of inspection, the tests and checks which will be carried out

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