PAU SPVP BIDpeda.gov.in/main/tenders/bidding_document.doc · Web viewAir break switches and DO fuses shall also be earthed through 50x6 mm GI flat to the main earthing flat. Metallic

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IFB No. : PEDA/ET/15-16/SPVPOWER/Farmer SchemeDated : May’15

BIDDING DOCUMENTfor

DESIGN, MANUFACTURE, SUPPLY, ERECTION, TESTING AND COMMISSIONING INCLUDING WARRANTY AND

OPERATION & MAINTENANCEFOR 10 YEARS OF 1MWp, 1.5MWp, 2MWp & 2.5MWp

SOLAR PV POWER PLANTAT

ANY WHERE IN STATE OFPUNJAB, INDIA

PUNJAB ENERGY DEVELOPMENT AGENCYPLOT NO. 1&2 SECTOR 33-D

CHANDIGARH 160 034, PUNJAB, INDIATELEPHONES: (91) 0172 - 2663382, 2663328, FAX : (91) 0172 – 2664402

Website : http://peda.gov.in

1


ContentsI. INVITATION FOR BIDS...............................................................................................................

II. INSTRUCTIONS TO BIDDERS..................................................................................................

A. INTRODUCTION...........................................................................................................................B. THE BIDDING DOCUMENTS.........................................................................................................C. PREPARATION OF BIDS...............................................................................................................D. SUBMISSION OF BIDS.................................................................................................................E. BID OPENING AND EVALUATION..................................................................................................

F. AWARD OF CONTRACT..............................................................................................................

III. BID DATA SHEET ……….…………………………………………………………………….….………

IV GENERAL CONDITIONS OF CONTRACT ………………………………………………………

VI. SCHEDULE OF REQUIREMENTS...........................................................................................

VII. TECHNICAL SPECIFICATIONS..............................................................................................

VIII SAMPLE FORMS.....................................................................................................................

1. BID FORM AND PRICE SCHEDULES .....................................................................................................

2. PRICE SCHEDULE FOR ANNUAL MAINTENANCE ………………………….………………………….

3. BID SECURITY FORM ……………………………………………………………………………………….

4. CONTRACT FORM...................................................................................................................................

5. PERFORMANCE SECURITY FORM ......................................................................................................

6. BANK GUARANTEE FOR ADVANCE PAYMENT……………………………………………………….

7. MANUFACTURERS AUTHORIZATION FORM ………………………………………….…..…………..

8. FORMAT FOR QUALIFICATION APPLICATION ………….……………………….……..……………..

9. CAPABILITY STATEMENT ………………………….…………………………………………..…………

10. SERVICE SUPPORT DETAILS …. ………………………….……………………………………….....…

11. TECHNICAL DETAIL FORM………………………………..………………………….…….……….…….

12. DECLARATION REGARDING DEEMED EXPORT BENEFITS ………………………….……….……

IX. SCOPE OF OPERATION & MAINTENANCE OF POWER PLANT.......................................

2


SECTION-I

1. INVITATION FOR BIDS

3


INDIA-PUNJAB

BID-SUBJECT- Design, manufacture, supply, erection, testing and commissioning along with operation & maintenance for 10 years for 1MWp, 1.5MWp, 2MWp and 2.5MWp SPV power plant at anywhere in state of Punjab.

1. The Punjab Energy Development Agency (PEDA) invites bids from eligible bidders for design, manufacture, supply, erection, testing and commissioning along with operation & maintenance for 10 years for 1MWp, 1.5MWp, 2MWp and 2.5MWp Grid Interactive SPV power plant anywhere in state of Punjab.

2. Bidding will be conducted through the Global competitive bidding and is open to all bidders.

3. A complete set of bidding documents can be downloaded from PEDA website www.peda.gov.in upon payment of a non-refundable fee of Rs. 5,000/- through RTGS/NEFT in PEDA account.

4. Bid Processing Fee @ Rs. 50,000/- is required to be paid through RTGS/NEFT in PEDA account mode.

5. Bids must be submitted complete in all respect (enclosures / annexures) 11.50 AM on 06.07.2015. Bids will be opened in the presence of bidders representative who chose to attend at the address below at 14.30 on 08.07.2015. The details are given below:

(a) Name of office : Punjab Energy Development Agency

(b) Name of Officer : Director

(c) Postal Address : Plot no. 1&2, Sector 33-D Chandigarh 160 034, Punjab, India

(d) Telephone nos. : (91) 0172 - 2663382, 2663328

(e) Fax No. : (91) 0172 – , 2662865, 2664402

(f) Date of commencement of sale : 05.06.2015of bidding document

(g) Last date for sale of biding : 06.07.2015 document

(h) Last date & time for submission of bids : 06.07.2015 11.50

(g) Time and date of opening of bids: 08.07.2015 at 14.30

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http://www.peda.gov.in/


SECTION II

2. INSTRUCTIONS TO BIDDERS

5


A. Introduction

1. Implementing Agency

1.1 Land owning Farmers with the help of PEDA are implementing these projects at

anywhere in the state of Punjab.

2. Eligible Bidders

2.1 This invitation for E-bids is open to all bidders / companies / System integration

companies, who otherwise have not been debarred/blacklisted by any Govt. Deptt.’s /

organization/ PSU’s / institutions/ agencies/ autonomous Organizations. The bidders shall be required to submit a self certification by a authorized signatory duly notarized to this effect.

2.2 Bidders should not be associated, or have been associated in the past, directly or

indirectly, with a firm or any of its affiliates which have been engaged by the

Purchaser /Project Implementing Agency to provide consulting services for the

preparation of the design, specifications, and other documents to be used for the

procurement of the goods to be purchased under this Invitation for Bids.

2.3 Government-owned enterprises may participate only if they are legally and financially

autonomous, if they operate under commercial law, and if they are not a dependent

agency of the Purchaser.

3. Eligible Goods and Services

3.1 For purposes of this ITB Clause, "origin" means the place where the goods are mined,

grown, or produced or the place from which the related services are supplied. Goods are

produced when, through manufacturing, processing or substantial and major assembling

of components, a commercially recognized product results that is substantially different

in basic characteristics or in purpose or utility from its components.

3.2 The origin of goods and services is distinct from the nationality of the Bidder.

4. Cost of Bidding

4.1 The Bidder shall bear all costs associated with the preparation and submission of its bid,

and the Purchaser named in the bid data sheet hereinafter referred to as “the

Purchaser”, will in no case be responsible or liable for these costs, regardless of the

conduct or outcome of the bidding process.

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B. The Bidding Documents

5. Content of Bidding Documents

5.1 The goods required, bidding procedures and contract terms are prescribed in the Bidding

Documents. In addition to the Invitation for Bids, the Bidding Documents include:

a. Bid Data Sheetb. Schedule of Requirements; ( SOR )c. Technical Specifications; ( TS )d. Bid Form and Price Schedulese. Manufacturer's Authorization Form

5.2 The Bidder is expected to examine all instructions, forms, terms, and specifications in

the Bidding Documents. Failure to furnish all information required by the Bidding

Documents or submission of a bid not substantially responsive to the Bidding

Documents in every respect will be at the Bidder's risk and may result in rejection of its

bid.

6. Clarification of Bidding Documents

6.1 A prospective Bidder requiring any clarification of the Bidding Documents may notify the

Project Implementing Agency in writing or by cable (hereinafter the term cable is

deemed to include telex and facsimile) at the Project Implementing Agency’s address

indicated in the Bid Data Sheet. The Project Implementing Agency will respond in writing

to any request for clarification of the Bidding Documents which it receives no later than

15 days prior to the deadline for submission of bids prescribed in the ITB Clause 19.1.

Written copies of the Project Implementing Agency’s response (including an explanation

of the query but without identifying the source of inquiry) will be sent to all prospective

Bidders which have received the Bidding Documents.

7. Amendment of Bidding Documents

7.1 At any time prior to the deadline for submission of bids, the Purchaser may, for any

reason, whether at its own initiative or in response to a clarification requested by a

prospective bidder, modify the Bidding Documents by amendment through online

corrigendum .

7.2 In order to allow prospective Bidders reasonable time in which to take the amendment

into account in preparing their bids, the Purchaser may, at its discretion, extend the

deadline for the submission of bids.

7


C. Preparation of Bids

8. Language of Bid

8.1 The Bid prepared by the Bidder, as well all correspondence and documents relating to

the bid exchanged by the Bidder and the Purchaser, shall be written in the language

specified in the Bid Data sheet. Supporting documents and printed literature furnished by

the Bidder may be in another language provided they are accompanied by an accurate

translation or the relevant passages in the language specified in the Bid Data Sheet, in

which case, for purposes of interpretation of the bid, the translation shall govern.

9. Bid Form

9.1 The Bidder shall complete the Bid Form and the Price Schedule furnished in the Bidding

Documents, indicating the goods to be supplied, a brief description of the goods, their

country of origin, quantity and prices.

10. Bid Prices

10.1 The Bidder shall indicate on the appropriate Price Schedule the unit prices (where

applicable) and total Bid Prices of the goods it proposes to supply under the Contract.

10.2 Prices indicated on the Price Schedule shall be entered separately in the following

manner:

(a) For goods offered :

(i) The price of the goods quoted EXW (ex-works, ex-factory, ex-showroom,

ex-warehouse or off-the-shelf, as applicable) including all custom duties

and sales and other taxes already paid or payable:

a. On components and raw material use in the manufacture or

assembly of the goods quoted ex-works or ex-factory or

b. on the previously imported goods for foreign origin quoted ex-

showroom, ex-warehouse or off-the-shelf.

(ii) any purchaser-country sales and other taxes which will be payable on the

goods if this Contract is awarded;

(iii) the price for inland transportation, insurance and other local costs

incidental to delivery of the goods to their final destination, if specified in

the Bid Data Sheet.

(iv) the price of other incidental services if any listed in the Bid Data Sheet.

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10.3 The Bidder's separation of the price components in accordance with the ITB Clause 11.2

above will be solely for the purpose of facilitating the comparison of bids by the

Purchaser and will not in any way limit the Purchaser's right to contract on any of the

terms offered.

10.4 Prices quoted by the Bidder shall be fixed during the Bidder's performance of the

Contract and not subject to variation on any account unless otherwise specified in the

Bid Data Sheet. A bid submitted with an adjustable price quotation will be treated as non

responsive and rejected,

11. Bid Currencies

11.1 Prices shall be quoted in the Indian Currency INR :

12. Documents Establishing Bidder's Eligibility and Qualifications

12.1 Pursuant to ITB Clause 9, the Bidder shall furnish, as part of its bid, documents

establishing the bidder's eligibility to bid and its qualifications to perform the Contract if its

bid is accepted.

12.2 The documentary evidence of the Bidder's eligibility to bid shall establish to the

Purchaser's satisfaction that the Bidder, at the time of submission of the bid, is from an

eligible source country as defined under ITB Clause (2).

12.3 The documentary evidence of the Bidder's qualifications to perform the Contract if its bid

is accepted, shall establish to the Purchaser's satisfaction.

(a) that, in the case of a Bidder offering to supply goods under the contract which the

Bidder did not manufacture or otherwise produce, the Bidder has been duly

authorized by the goods' manufacturer or producer to supply the goods in the

Purchaser’s country.

(b) that the Bidder has the financial, technical, and production capability necessary to

perform the Contract. Audited balance sheets of the last three years of the bidding

company be enclosed.

(c) that in the case of a Bidder not doing business within the Purchaser’s country, the

bidder is or will be (if awarded the contract) represented by an Agent in the country

equipped and able to carry out the Supplier’s maintenance, repair, and spare parts-

stocking obligations prescribed in the Conditions of Contract and/or Technical

Specifications; and

(d) that the Bidder meets the qualification criteria listed in the Bid Data Sheet.

9


13. Documents Establishing Goods' Eligibility and Conformity to Bidding Documents

13.1 Pursuant to ITB Clause 9, the Bidder shall furnish, as part of its bid, documents

establishing the eligibility and conformity to the Bidding Documents of all goods and

services which the Bidder proposes to supply under the Contract.

13.2 The documentary evidence of the eligibility of the goods and services shall consist of a

statement in the Price Schedule of the country of origin of the goods and services which

shall be confirmed by a certificate of origin at the time of shipment.

13.3 The documentary evidence of conformity of the goods and services to the bidding

documents may be in the form of literature, drawings and data, and shall consist of:

(a) a detailed description of the essential technical and performance characteristics

of the goods;

(b) a list giving full particulars, including available sources and current prices, of all

spare parts, special tools, etc., necessary for the proper and continued

functioning of the goods for a period to be specified in the Bid Data Sheet,

following commencement of the goods by the Purchaser; and

(c) a item-by-item commentary on the Purchaser's Technical Specifications

demonstrating the goods and services to those specification, brand/catalogue

no’s or a statement of deviations and exceptions to the provisions of the

Technical Specifications.

D. Submission of Bids

14. Deadline for Submission of Bids

14.1 Bids must be submitted no later than the time and date specified in the Bid Data Sheet. 14.2 The Purchaser may, at its discretion, extend this deadline for submission of bids by

amending the Bid Documents in accordance with ITB Clause 7, in which case all rights and obligations of the Purchaser and Bidders previously subject to the deadline will thereafter be subject to the deadline as extended.

15. Modification and Withdrawal of Bids No bid may be withdrawn in the interval between the deadline for submission of bids and

the expiration of the period of bid validity specified by the Bidder on the Bid Form. Withdrawal of a bid during this interval may result in the Bidder's forfeiture of its bid security, pursuant to ITB Clause 15.7.

E. Bid Opening and Evaluation 16. Opening of Bids by Purchaser

16.1 The Purchaser will open Technical bids on the date & time specified in the Bid Data Sheet.

16.2 Bids that are not opened and read out at bid opening shall not be considered further for evaluation, irrespective of the circumstances.

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16.3 The technical bids shall be evaluated by the purchaser for assessing responsiveness, bidders qualification and technical confirmation.

16.4 The bidders whose technical bids are declared as technically responsive and qualified shall be informed accordingly and their Price Bids shall be opened.

16.5 The bidders whose technical bids do not qualify, there Price Bids shall not be opened.

16.6Price Bids opening date shall be conveyed subsequently

17 Clarification of Bids

17.1 During evaluation of the bids, the Purchaser may, at its discretion, ask the Bidder for a

clarification of its bid. The request for clarification and the response shall be in writing,

and no change in the prices or substance of the bid shall be sought, offered, or

permitted.

18. Preliminary Examination

18.1Arithmetical errors will be rectified on the following basis. If there is a discrepancy between

the unit price and the total price that is obtained by multiplying the unit price and quantity, the

unit price shall prevail and the total price shall be corrected. If the there is a discrepancy

between words and figures, the amount in words will prevail. If the supplier does not accept the

correction of the errors, its bid will be rejected, and its bid security, may be forfeited.

19.1 The Purchaser may waive any minor informality, non-conformity or irregularity in a bid

which does not constitute a material deviation, provided such waiver does not prejudice or

affect the relative ranking of any Bidder.

19.2 Prior to the detailed evaluation, pursuant to ITB Clause 22, the Purchaser will determine

the substantial responsiveness of each bid to the Bidding Documents. For purposes of

these Clauses, a substantially responsive bid is one which conforms to all the terms and

conditions of the Bidding Documents without material deviations. Deviations from or

objections or reservations to critical provisions such as those concerning Bid Security

(ITB Clause 15) Applicable Law (GCC Clause 31), and Taxes and Duties (GCC Clause

33), will be deemed to be a material deviation. The Purchaser's determination of a bid's

responsiveness is to be based on the contents of the bid itself without recourse to

extrinsic evidence.

19.3 If a bid is not substantially responsive, it will be rejected by the PEDA and may not

subsequently be made responsive by the Bidder by correction of the nonconformity.

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20. Evaluation and Comparison of Bids

20.1 The PEDA will evaluate and compare bids which have been determined to be

substantially responsive, pursuant to ITB Clause 19.

20.2 The comparison shall be of EXW price of the goods offered by the bidder from such

price to include all costs as well as duties and taxes paid or payable on components and

raw material incorporated or to be incorporated in the goods, and the CIF names port of

destination (or CIP border point, of CIP names place or destination) price of the goods

offered from outside the purchaser’s country.

20.3 The PEDA's evaluation of a bid will take into account, in addition to the bid price and

price quoted in accordance with ITB Clause 11.2, one or more of the following factors as

specified in the Bid Data Sheet, and quantified in ITB Clause 22.4.:

a. Cost of inland transportation, insurance, and other costs within the purchaser’s country incidental to delivery of the goods to their final destination.

b. Delivery schedule offered in the bid;c. Deviations in payment schedule from that specified in the Special Conditions of

Contract;d. The cost of components, mandatory spare parts, and service;e. The availability in the purchaser’s country of spare parts and after-sales services

for the equipment offered in the bid;f. The projected operation and maintenance costs during the life of the equipment;g. The performance and productivity of the equipment offered; and/orh. Other specific criteria indicated in the Bid Data Sheet and/or in the Technical

Specifications.

20.4 For factors retained in the Bid Data Sheet pursuant to ITB 22.3, one or more of the

following quantification methods will be applied, as detailed in the Bid Data Sheet :

(a) inland transportation from EXW/port of entry/border point, insurance, and

incidentals.

In land transportation, insurance, and other incidental costs for delivery of

the goods from EXW/port of entry/border point to project site named in

the Bid Data Sheet. The above cost will be added by the purchase to

EXW/CIF/CIP border point price.

(b) Delivery Schedule: The Purchaser requires that the goods under the invitation for bids shall

be delivered (shipped) at the time specified in the Schedule of Requirements. No

credit will be given to earlier delivery. Bids offering any deviation from the

scheduled delivery period shall be liable for rejection.

(c) Deviation in Payment Schedule:

Bidders shall state their bid price for the payment schedule outlined in the

SCC. Bids will be evaluated on the basis of this base price.

12


(d) Cost of Spare Parts

(i) The list of items and quantities of major assemblies, components, and

selected spare parts, likely to be required during the initial period of

operation specified in the Bid Data Sheet, is annexed to the Technical

Specifications. The total cost of these items, at the unit prices quoted in

each bid, will be added to the bid price.

(e) Operation and Maintenance Costs:

Since operation & maintenance of the goods under procurement from a major

part of the life cycle cost of the equipment, these costs will be evaluated in

accordance with the bids or in the Technical Specifications.

f) Operation and Maintenance Costs:

Since operation & maintenance of the goods under procurement from a major

part of the life cycle cost of the equipment, these costs will be evaluated in

accordance with the bids or in the Technical Specifications

(g) Performance and productivity of the equipment.

(i) Bidders shall state the guaranteed performance or efficiency in response

to the Technical Specification. For each drop in the performance or

efficiency below the norm of 100, an adjustment for an amount specified

in the Bid Data Sheet will be added to the bid price, representing the

capitalized cost of additional operating costs over the life of the plant,

using the methodology specified in the Bid Data Sheet or in the Technical

Specification.

21. Contacting the Purchaser

21.1 From the time of bid opening to the time of contract award, if any bidder wishes to

contact the purchaser on any matter related to the bid, it should do so in writing.

21.2 Any effort by a Bidder to influence the Purchaser in its decision on bid evaluation, bid comparison or contract award decisions may result in rejection of the Bidder's bid.

F. Award of Contract

22. Post qualification

22.1 In the absence of pre qualification, the Purchaser will determine to its satisfaction

whether the Bidder selected as having submitted the lowest evaluated responsive bid is

qualified to perform the contract satisfactorily, in accordance with the criteria listed in ITB

Clause 13.3.

22.2 The determination will take into account the Bidder's financial, technical and production

capabilities. It will be based upon an examination of the documentary evidence of the 13


Bidder's qualifications submitted by the Bidder, pursuant to ITB Clause 13.3, as well as

such other information as the PEDA deems necessary and appropriate.

22.3 An affirmative determination will be a prerequisite for award of the contract to the bidder.

A negative determination will result in rejection of the bidder’s bid, in which event the

purchaser will proceed to the next lowest evaluated bid to make a similar determination of

that bidder’s capabilities to perform satisfactorily.

23. PEDA's Right to Accept Any Bid and to Reject Any or All Bids23.1 The PEDA reserves the right to accept or reject any bid, and to annul the bidding

process and reject all bids at any time prior to award of Contract, without thereby

incurring any liability to the affected Bidder or Bidders or any obligation to inform the

affected Bidder or Bidders.

14


SECTION IV

GENERAL CONDITIONS OF CONTRACT

15


TABLE OF ITB CLAUSES

ITB Clause

1 Warranty

2. Payment

3 Prices

4 Taxes and Duties

16


1. Warranty1.1 The Supplier warrants that the Goods supplied under this Contract are new, unused, of

the most recent or current models and incorporate all recent improvements in design and

materials unless provided otherwise in the Contract. The Supplier further warrants that

the Goods supplied under this Contract shall have no defect arising from design,

materials or workmanship (except when the design and/or is required by the Purchaser's

Specifications) or from any act or omission of the Supplier, that may develop under

normal use of the supplied Goods in conditions prevailing in the country of final

destination.

1.2 This warranty shall remain valid for / Sixty Months 60 months after the Goods or any

portion thereof as the case may be, have been delivered to and commissioned and

accepted at the final destination indicated in the Contract, or for 72 seventy two months

after the date of shipment from the port of loading in the source country, whichever

period concluded earlier, unless specified otherwise SCC.

1.3 The Purchaser shall promptly notify the Supplier in writing of any claims arising under

this warranty.

1.4 Upon receipt of such notice, the Supplier shall, within the period specified in SCC and

with all reasonable speed, repair or replace the defective Goods or parts thereof, without

cost to the Purchaser other than, where applicable, the cost of inland delivery of the

repaired or replaced Goods or parts from the port of entry to the final destination.

1.5 If the Supplier, having been notified, fails to remedy the defect(s) within the period

specified in SCC, the Purchaser may proceed to take such remedial action as may be

necessary, at the Supplier's risk and expense and without prejudice to any other rights

which the Purchaser may have against the Supplier under the Contract.

2. Payment2.1 The method and conditions of payment to be made to the Supplier under the Contract

shall be specified in SCC.

2.2 The Supplier's request(s) for payment shall be made to the Purchaser in writing,

accompanied by an invoice describing, as appropriate, the Goods delivered and the

services performed, and by documents submitted pursuant to GCC Clause 10, and upon

fulfillment of other obligations stipulated in the contract.

2.3 Payments shall be made promptly by the Purchaser within sixty (60) days of submission

of the invoice/claim by the Supplier.

2.4 The currency or currencies in which payment is made to the Supplier under this Contract

shall be specified in SCC subject to the following general principle:

All payments will be made in the Rupees INR.

17


2.5 All payments shall be made in the currency or currencies specified in the SCC pursuant

to GCC 16.4.

3. Prices3.1 Prices charged by the Supplier for Goods delivered and Services performed under the

Contract shall not vary from the prices quoted by the Supplier in its bid.

4. Taxes and Duties33.1 A foreign supplier shall be entirely responsible for all taxes, stamp duties,

license fees and other such levies imposed out side the purchaser’s country.

33.2 A local supplier shall be entirely responsible for all taxes, duties, license fees,

etc, incurred until delivery of the contracted Goods to the purchaser.

18


SECTION V

5. SCHEDULE OF REQUIREMENTS

19


Part 1

The general scope under this contract includes design, manufacture, shop testing, inspection,

packing & forwarding, transportation upto project site loading & unloading, storage in safe

custody, erection, carrying out preliminary tests at site, commissioning, performance testing &

handing over to the purchaser all the equipment installed including the insurance coverage for

the concept to commissioning period including operation and maintenance .

The illustrative Schedule of requirements is in accordance with the specifications contained in this document

Sl. No. Brief Description Units Make1. SPV modules for a total capacity 1MWp, 1.5MWp, 2.0MWp,

2.5MWp per specifications. 1 Set Compliant to bid

document spec’s

2. SPV module Ground mounting structure suitable for accommodating 1MWp, 1.5MWp, 2.0MWp, 2.5MWp capacity SPV modules including foundation as per specifications .

1 Set

3. Inverters as per specifications As per spec. SMA / Schneider / Siemens / ABB / STATCON/ Ingeteam/AEG

4. Array Junction Boxes WITH Remote PLC link 1 Set Robotina /Tyco / Hensel/ABB

5. Main Junction Box 1 Set Robotina /Tyco / Hensel/ABB

6. Data Logging with individual string monitoring and remote monitoring system as per specifications, Weather Monitoring station comprising of 1. Pyranometer Class 1,2 Relative humidity sensor 3. Temprature sensor Integrated both for ambient and module surface temperature4. Wind speed measurement anemometer

1 Set

7. LT-415 V AC Distribution Panel with SFU for Auxiliary Transformer 415 V incomer as per specification

1set L&T /ABB/ Schneider electric

8. LT/HT power CABLES (LSZH) requirement as per design

MetersAs required at site for full plant commissioning

Finolex/ Polycab /Havells

9. DC Cables for Solar PV array and field application MetersAs required at site for full plant commissioning

LAPP/LEONI/ SIECHEM/BIZLINK

10. Fire extinguishers in accordance with BIS codes for electrical short circuit fires along with sand buckets

1 Set

11. Lightning arrester complete set as per specifications 1 Set

12. Earthing complete set as per specifications 1 Set

13. Yard Lighting for the complete Solar array Field and illumination of the compound Chain wall and yard/control room.

1 Set

20


14. Transformers of adequate cap. for 1MWp, 1.5MWp, 2.0MWp, 2.5MWp capacity

1 No’s Alstom / Areva/ Kirloskar / Voltamp/ Jyoti/CG

15. Lighting arrestor suitable for 11 KV system 1 set

16. Suitable ACB for inverter protection, 11 KV cubicle consisting of current transformer, potential transformer,SF6/Vacuum circuit breaker, bus bar, isolators, protection system with incoming and outgoing feeders

1 No. L&T /ABB/Schneider

17. 11 KV Isolators within the ODY L&T /ABB/Schneider

18. Spares, tools and plant for 10 years operation and maintenance As per list

19. Fuses, Transfer switches, Printed Circuit boards required for power plant

1 Set

20. Providing training to engineers and site staff for operating, Maintenance and trouble shooting skills

21. Operation and maintenance of the SPV Power Plant for a period of 10 years from date of commissioning of the power plant as per scope in Section X & SCC-II

22. Engineering, electrical drawings and installations and O&M manuals Sets

23. Control room, office air conditioning and Any other equipment required to complete the installation

Sl. No.

Brief Description Units

20 Civil, array structures and Plant control room and Stores, Security office, complete design, construction of array support structures, Plant control room for dust free and air-conditioned environment for INVERTERS and other control and data logging equipment (separated through aluminum /glass panels) with suitable ventilation as per details given in the technical schedules.Site Grading, leveling, exploratory drills if necessary and consolidation of the area pertaining to the area of the solar plant.Embedment of structures suitable for mounting of PV modules on ground in an area of 4.5 acres of land for 1MWp . Laying of earthing equipment/structures and connecting to the main ground mat as per statutory requirements.Cutting of cable trenches wherever necessary, construction of all around compound wall on front side and chain fencing (wire mesh) with plinth level brick work on the remaining boundary for the plant and power evacuation line bay and providing suitable size gate for main entry and wicket gates for man power entry .Formation of roads wherever necessary, providing foundation for transformers ,structures and water drainage ducts, lightining arrestors etc.Construction of plant control room, stores in about 40 x20 sq.ft area and 12’ ht. to house control, protection, scada and Electrical panels and provision for cable trenches and trays, ducting . Construction of one no, Office with Toilet and Pantry of approx. area 200 sq. ft, and Security office of 120 sqft approx having one bathroom cum toilet at the main gate entrance and one no. metering room of size 7 x7 foot . Rain water harvesting provision must be incorporated in all the buildings.. Modifications may be required and made as per site conditions, for which decision of the purchaser shall be final.

As per specifications given, design /drawings to be submitted by supplier and approved by purchaser

21


Note : The requirements for the plant and machinery are indicated in the schedule of requirements. The items indicated in the schedules are only indicative and the suppliers are required to include and quote for any other item left out in the schedule. Complete details and quantity of mandatory spare parts shall be furnished by the supplier in their bid. Suppliers shall offer their complete design along with drawings for the plant in their bids. The details of the energy output for the plant for the entire year based on the global radiation values be furnished by the bidders.

22


SECTION VII

7. TECHNICAL SPECIFICATIONS

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General Description The SPV power plant shall have a total capacity of 1MWp, 1.5MWp, 2MWp and 2.5MWp in

different sites in state. The power plant shall provide a reliable and independent power supply to

the PSPCL 66/11KV Sub-station in IPP mode. The power plant shall have a provision to meet

the auxiliary power requirements of the plant such as control room , yard lighting and export the

excess power generated to the PSPCL grid after stepping it up to 11KV and shall have a

provision to import power from grid for localized use in case of load exceeding the PV

generation in night/shut down conditions. The Inverter shall be designed to convert DC power

produced by SPV modules, in to AC power and adjust the voltage & frequency levels to suit the

grid voltage & frequency. The specifications are generic in nature.

1. Solar Photovoltaic Modules 1.1 The total Solar PV minimum array capacity should not be less than 1.00MWp,

1.5MWp, 2MWp and 2.5MWp and should comprise of solar multi crystalline modules of

minimum 250 Wp and above wattage. Module capacity less than minimum 250 Wp should not

be supplied. The Photovoltaic modules must be tested and certified by an independent testing

laboratory that is accredited in accordance with ISO Guide 25. The module type must be

qualified as per IEC 61215 latest edition or IEEE 1262 or CEC 503 for crystalline silicon. SPV

module conversion efficiency should be equal to or greater than 16.0% under STC and AM 1.5

radiation. Modules must qualify to IEC 61730 Part I and II for safety qualification testing.

Certificate for module qualification from IEC or equivalent to be submitted as part of the bid offer. Self undertaking from manufacturer / supplier that the modules being supplied are as per above.

1.2 The PV module shall perform satisfactorily in humidity up to 80 % with

temperature between – 40oC to + 85oC. Since the modules would be used in a

high voltage circuit, the high voltage insulation test shall be carried out on each

module and a test certificate to that effect provided.

1.3 The predicted electrical degradation at the end of the period of 10years shall be

less then ten (10) per cent of the full rated original output.

1.4. Manufacturers / suppliers should confirm whether they are supplying PV module

using a RF identification tag (RFID), which must contain the following

information. The RFID can be inside or outside the module laminate, but must be

able to withstand harsh environmental conditions.

(i) Name of the manufacturer of PV Module

(ii) Name of the Manufacturer of Solar cells

(iii) Month and year of the manufacture (separately for solar cells and

module)

(iv) Country of origin (separately for solar cells and module)

(v) I-V curve for the module24


(vi) Peak Wattage, Im, Vm and FF for the module

(vii) Unique Serial No and Model No of the module

(viii) Date and year of obtaining IEC PV module qualification certificate

(ix) Name of the test lab issuing IEC certificate

(x) Other relevant information on traceability of solar cells and module as

per ISO 9000 series.

G1.5. Other general requirement for the PV modules and subsystems shall be the following :

a. Raw materials(solar Cells) and technology employed in the module production processes shall have to be certified and a certificate giving details of major materials i.e. cells, Glass, back sheet, their makes and data sheets to be submitted for the modules being supplied by the bidder.

b. The rated output power of any supplied module shall not have negative

tolerance.

c. The peak-power point voltage and the peak-power point current of any

supplied module and/or any module string (series connected modules)

shall not vary more than 3 (three) per cent from the respective arithmetic

means for all modules and/or for all module strings, as the case may be.

d. Except where specified, the front module surface shall consist of impact

resistant, low-iron and high-transmission toughened glass.

e. The module frame, if any, shall be made of a corrosion-resistant material

which shall be electrolytically compatible with the structural material used

for mounting the modules.

f. The module shall be provided with a junction box with either provision of

external screw terminal connection or sealed type and with arrangement

for provision of by-pass diode. The box shall have hinged, weather proof

lid with captive screws and cable gland entry points or may be of sealed

type and IP65 rated.

g. Necessary I-V curves at 25c, 45c, 60c and at NOC are required to be

furnished. Offers to provide PV module warranty of 25 years with no

more than 20% degradation in performance/output over 25 years .

2. ARRAY STRUCTURE 1. Wherever required, suitable number of PV panel structures shall be provided.

Structures shall be of flat-plate design either I or L sections.

2. Structural material shall be corrosion resistant and electrolytic ally compatible

with the materials used in the module frame, its fasteners, nuts and bolts.

Galvanizing should meet ASTM A-123 hot dipped galvanizing or equivalent

which provides at least spraying thickness of 120 microns on steel as per

25


IS5905, if steel frame is used. Aluminum frame structures with adequate strength

and in accordance with relevant BIS/international standards can also be used.

3. Structures shall be supplied complete with all members to be compatible for

allowing easy installation at the ground site.

4. The structures shall be designed to allow easy replacement of any module & can

be either designed to transfer point loads on the ground as per site conditions

and design to be approved by PEDA.

5. Each structure shall have a provision to adjust its angle of inclination to the

horizontal as per the site conditions (manual seasonal tilt) .

6. Each panel frame structure be so fabricated as to be fixed on the ground. The

structure should be capable of withstanding a wind load of 200 km/hr after

grouting & installation. The front end of the solar array must be one meter above

the ground. Grouting material for SPV structure shall be as per M15(1:2:4)

concrete specification.

7. The structures shall be designed for simple mechanical and electrical installation.

There shall be no requirement of welding or complex machinery at the installation

site. The structure shall be designed and installed by ramming method by using a

ramming machine. The structure design must take into consideration that it has

to be installed using ramming machine. The structure size and length must be

kept as per site soil strength requirements.

8. The supplier shall specify installation details of the PV modules and the support

structures with appropriate diagrams and drawings. Such details shall include,

but not limited to, the following;

a) Determination of true south at the site;

b) Array tilt angle to the horizontal, with permitted tolerance;

c) Details with drawings for fixing the modules;

d) Details with drawings of fixing the junction/terminal boxes;

e) Interconnection details inside the junction/terminal boxes;

f) Structure installation details and drawings;

g) electrical grounding (earthing);

h) Inter-panel/Inter-row distances with allowed tolerances; and

i) Safety precautions to be taken.

The array structure shall support SPV modules at a given orientation and absorb and transfer

the mechanical loads to the ground columns properly. All nuts and bolts shall be of very good

quality stainless steel. Detailed design and Drawing shall have to submitted to Purchaser for

acceptance and approval before execution of work.

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NOTE: The structural design of the complete system should be compatible with the structural strength and load bearing capacity of the site/ ground, design calculations and certificate to this effect shall be provided by a qualified chartered structural engineer. The company may be required to carry out the soil bearing strength lists and piling if necessary.

9. Proper path ways covered with bajri /grit stone in between arrays to be provided

for the purpose of carrying out O&M and repairs. Plant inside roads to be

provided as approach for control room and around / in between PV field in

accordance with the final drawing after approval from Purchaser. The design and

drawings shall be got approved after obtaining the vetting from qualified

structural engineers.

3. Power Conditioning Unit (PCU) 1 no. PCUs required of 1000 KVA, 1500KVA, 2000KVA and 2500KVA Central Type,

should convert DC power produced by SPV modules, in to AC power and adjust the

voltage & frequency levels to suit the local grid conditions. 1000, 1500KVA, 2000KVA

and 2500KVA inverter shall interconnect and feed power to the PSPCL grid at 11KV..

Common Technical Specification :

Control Type : Voltage source , microprocessor assisted , output

regulation

Out put voltage : 3 Phase, 280-380V ac ( +12.5 %, - 20 % V ac)

Frequency : 50 Hz ( +3 Hz, -3 Hz)

Continuous rating : 1000 KVA, 1500KVA, 2000KVA and 2500KVA

Dc link voltage range : 0 to 1000 V, 1500KVA, 2000KVA and 2500KVA

Nominal AC out put : 1000 KW, 1500KVA, 2000KVA and 2500KVA each

Total Harmonic Distortion : less than 3%

Operating temperature Range : 0 to 55 deg C

Relative Humidity : Upto 95%

Housing cabinet : INVERTER to be housed in suitable switch cabinet,

Within IP 20 degree of ingress protection as per EN60529

Inverter efficiency : 95 % and above

Power Control : MPPT

Other important Features/Protections required in the INVERTER

Automatic morning wake-up and nightly shutdown

PCU must have the feature to work in tandem with other similar PCUs and be

able to be successively switched ON and OFF automatically based on solar

radiation variations during the day.

Mains (Grid) over-under voltage and frequency protection

Fool proof protection against ISLANDING.

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Included authentic tracking of the solar array’s maximum power operation voltage

(MPPT).

Array ground fault detection.

LCD and piezoelectric keypad operator interface Menu driven

Automatic fault conditions reset for all parameters like voltage, frequency and/or

black out.

MOV type surge arresters on AC and DC terminals for over voltage protection

from lightning-induced surges.

INVERTER should be rated to operate at 0 –55 deg. Centigrade unless provision

for air conditioning is included in INVERTER

All parameters should be accessible through an industry standard

communication link.

Overload capacity (for 10 sec) should be 150 % of continuous rating

3.1 The INVERTER shall be self commuted and shall utilize a circuit topology and

components suitable for meeting the specifications listed above at high

conversion efficiency and with high reliability.

3.2 Since the INVERTER is to be used in solar photo voltaic energy system, it

should have high operational efficiency. The DC to AC conversion efficiency

shall at least be 95 percent for output ranging from 20 percent of full load to full

load. The idling current at no load must not exceed 2 percent of the full-load

current.

3.3 In INVERTER there shall be a direct current isolation provided at the output by

means of a suitable isolating transformer.

3.4 The INVERTER output shall be 415 VAC, 50 Hz 3 Phase,

3.5 The INVERTER shall be capable of operating in parallel with the grid utility

service and shall be capable of interrupting line-to-line fault currents and line-to-

ground fault currents.

3.6 The INVERTER shall be able to withstand an unbalanced output load to the

extent of 30 %

3.7 The INVERTER shall include appropriate self protective and self diagnostic

features to protect itself and the PV array from damage in the event of

INVERTER component failure or from parameters beyond the INVERTER’s safe

operating range due to internal or external causes. The self-protective features

shall not allow signals from the INVERTER front panel to cause the INVERTER

to be operated in a manner which may be unsafe or damaging. Faults due to

malfunctioning within the INVERTER, including commutation failure, shall be

cleared by the INVERTER protective devices and not by the existing site utility

grid service circuit breaker.

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3.8 The INVERTER shall go to shut down/standby mode, with its contacts open,

under the following conditions before attempting an automatic restart after an

appropriate time delay; in sufficient solar power output.

a) Insufficient Solar Power Input.

When the power available from the PV array is insufficient to supply the

losses of the INVERTER, the INVERTER shall go to a standby/shutdown

mode. The INVERTER control shall prevent excessive cycling during

rightly shut down or extended periods of insufficient solar radiation.

b) Utility-Grid Over or Under Voltage

The INVERTER shall restart after an over or under voltage shutdown

when the utility grid voltage has returned to within limits for a minimum of

two minutes.

c) Utility-Grid Over or Under Frequency

The INVERTER shall restart after an over or under frequency shutdown

when the utility grid voltage has returned to the within limits for minimum

of two minutes.

3.9 The INVERTER generated harmonics measures at the point of connection to the

utility services when operating at the rated power shall not exceed a total

harmonic current distortion of 4 percent, a single frequency current distortion of 4

percent and single frequency voltage distortion of 1 percent, when the first

through the fiftieth integer harmonics of 50 Hz are considered.

3.10 The INVERTER Power factor at the point of utility service connection shall be

0.95 lagging or leading when operating at above 25 percent of the rated output,

but may be less than 0.95 lagging below 25 percent of the rated output.

3.11 The high voltage and power circuits of the INVERTER shall be separated from

the low-voltage and control circuits. The internal copper wiring of the INVERTER

shall have flame resistant insulation. Use of PVC is not acceptable. All

conductors shall be made of standard copper.

3.12 The INVERTER shall withstand a high voltage test of 2000 V rms, between either

the input or the output terminals and the cabinet (chassis).

3.13 Full protection against accidental open circuit and reverse polarity at the input

shall be provided.

3.14 The INVERTER shall not produce Electromagnetic Interference (EMI) which

may cause malfunctioning of electronic and electrical instruments including

communication equipment, which are located within the facility in which the

INVERTER is housed.

3.15 The INVERTER shall have an appropriate display on the front panel to display

the instantaneous AC power output and the DC voltage, current and power input.

Each of these measurement displays shall have an accuracy of 1 percent of full

29


scale or better. The display shall be visible from outside the INVERTER

enclosure. Operational status of the INVERTER, alarms, trouble indicators and

ac and the dc disconnect switch positions shall also be communicated by

appropriate messages or indicator lights on the front cover of the INVERTER

enclosure.

3.16 Communication Modbus protocol with LAN/WAN options along with remote

access facility and SCADA package with latest monitoring systems including

individual string monitoring with Web/IP data monitoring.

3.17 Electrical safety, earthing and protectiona. Internal Faults : In built protection for internal faults including

excess temperature, commutation failure, overload and cooling fan failure

(if fitted) is obligatory.

b. Galvanic Isolation: Galvanic Isolation is required to avoid any DC

component being injected into the grid and the potential for AC

components appearing at the array.

c. Over Voltage Protection: Over Voltage Protection against

atmospheric lightning discharge to the PV array is required. Protection is

to be provided against voltage fluctuations in the grid itself and internal

faults in the power conditioner, operational errors and switching

transients.

d. Earth fault supervision: An integrated earth fault device shall have

to be provided to detect eventual earth fault on DC side and shall send

message to the supervisory system.

e. Cabling practice: Cable connections must be made using PVC Cu

cables, as per BIS standards. All cable connections must be made using

suitable terminations for effective contact. The PVC Cu cables must be

run in GL trays with covers for protection.

f. Fast acting semiconductor type current limiting fuses at the main

bus-bar to protect from the grid short circuit contribution.

3.18 The INVERTER shall include an easily accessible emergency OFF button

located at an appropriate position on the unit.

3.19 The INVERTER shall include ground lugs for equipment and PV array grounding.

The DC circuit ground shall be a solid single point ground connection in

accordance with WEC 69042.

3.20 All exposed surfaces of ferrous parts shall be thoroughly cleaned, primed, and

painted or otherwise suitably protected to survive a nominal 30 years design life

of the unit.

3.21 The INVERTER enclosure shall be weatherproof and capable of surviving

climatic changes and should keep the INVERTER intact under all conditions in

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the room where it will be housed. The INVERTER shall be located indoor and should be either wall/ pad mounted. Moisture condensation and entry of

rodents and insects shall be prevented in the INVERTER enclosure.

3.22 Components and circuit boards mounted inside the enclosures shall be clearly

identified with appropriate permanent designations, which shall also serve to

identify the items on the supplied drawings.

3.23 All doors, covers, panels and cable exists shall be gasketed or otherwise

designed to limit the entry of dust and moisture. All doors shall be equipped with

locks. All openings shall be provided with grills or screens with openings no

larger than 0.95 cm. (about 3x8 inch).

3.24 In the design and fabrication of the INVERTER the site temperature ( 5O to 55O

C), incident sunlight and the effect of ambient temperature on component life

shall be considered carefully. Similar consideration shall be given to the heat

sinking and thermal for blocking diodes and similar components.

3.25 Factory Testing:a. The INVERTER shall be tested to demonstrate operation of its

control system and the ability to be automatically synchronized and

connected in parallel with a utility service, prior to its shipment.

b. Operation of all controls, protective and instrumentation circuits

shall be demonstrated by direct test if feasible or by simulation operation

conditions for all parameters that can not be directly tested.

c. Special attention shall be given to demonstration of utility service

interface protection circuits and functions, including calibration and

functional trip tests of faults and isolation protection equipment.

d. Operation of start up, disconnect and shutdown controls shall also

be tested and demonstrated. Stable operation of the INVERTER and

response to control signals shall also be tested and demonstrated.

e. Factory testing shall not only be limited to measurement of Phase

currents, efficiencies, harmonic content and power factor, but shall also

include all other necessary tests/simulation required and requested by the

Purchasers Engineers. Tests may be performed at 25,50,75 and 100

percent of the rated nominal power.

f. A factory Test Report (FTR) shall be supplied with the unit after all

tests. The FTR shall include detailed description of all parameters tested

qualified and warranted.

g. Factory testing of the INVERTER/INVERTER,s should be carried

out and witnessed by the Purchaser’s Engineers at the manufacturers

premises.

3.26 Operating Modes:

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The following operating modes are to be made available:

a) Night or Sleep mode : Where the inverter is almost completely turned off,

with just the timer and control system still in operation, losses should not

exceed 1 watts per 5 kilowatt.

b) Standby mode : Where the control system continuously monitors the

output of the solar generator until pre-set value is exceeded (typically 10

watts)

c) Operational or MPPT tracking mode : The control system continuously

adjust the voltage of the generator to optimize the power available. The

power conditioner must automatically re-enter stand-by mode when input

power reduces below the standby mode threshold. Front Panel display

should prove the status of the INVERTER, including AC Voltage, Current,

Power output & DC Current, Voltage and Power input, pf and fault

Indication (if any)

3.27 Codes and StandardsThe quality of equipment supplied shall be controlled to meet the guidelines for

engineering design included in the standards and codes listed in the relevant ISI

and other standards, such as :

IEEE 928 Recommended Criteria for Terrestrial PV Power Systems.

IEEE 929 Recommended Practice for Utility Interface of Residential and

Intermediate PV Systems.

IEEE 519 Guide for Harmonic Control and Reactive Compensation of

Static Power Controllers.

National Electrical NEPA 70-(USA) or equivalent national standard.

National Electrical Safety Code ANSI C2- (USA) or equivalent national

standard.

JRC Specification 503 (Version 2.2 March 1991) or JPL Block V standard

for PV modules.

The inverter manufacturer should attach efficiency certificate from

Independent Third party Testing laboratory i.e. IEC,TUV,SNL/ERTL &

STQC. PCU should confirm to IEC 61683 for efficiency measurements

and IEC 60068 2 for environmental testing. MPPT unit should confirm to

design qualification IEC 62093.

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3.28 PLANT METERING / DATA LOGGINGa) PV array energy production : Digital Meters to log the actual value of AC/

DC Voltage, Current & Energy generated by the PV system shall have to

be provided. Bidirectional Two way HT energy meter (Import – Export metering) Class 0.2S ABT Compliant shall be incorporated in the system on the main 11KV AC Grid supply complete with CTs / PTs in the main plant ODY. Similar Bidirectional Two way HT energy meter (Import – Export metering) Class 0.2S ABT Compliant shall be incorporated in the system on the main 11KV AC Grid incomer complete with CTs / PTs at the PSPCL substation HT CB Panel on the 11KV bus bar.

b) Solar Irradiance: An integrating Pyranometer (Class I or better) should be

provided , with the sensor mounted in the plane of the array. Readout

should be integrated with data logging system.

c) Wind Speed : An integrated wind speed measurement unit be provided.

d) Temperature Sensor: Integrated temp. sensors for measuring the module

surface temp., inverter inside enclosure temp. and ambient temp to be

provided complete with readouts integrated with the data logging system.

e) A data logging system (Hardware and software) for plant control and

monitoring shall be provided with the following features :

2no’s suitable Computers (HP / DELL) : 3 GHz Pentium i7 latest with 360GB

HDD, 3GB RD RAM, 2 Parallel & 2 Serial Port, Wi-Fi Lan Card, DVD RW

Drive , 20” LED display, USB Scroll Mouse, along with two All in one (HP)

professional series 600dpi / 20ppm Desktop LaserJet printers along with one

2 KVA on-line ups with 1 hour battery backup.

One no. Laptop (HP / SONY): minimum 2.6Ghz. 3MB Cache 4GB RAM,

500GB HDD, DVD RW, Card Reader, Bluetooth, Wi-Fi, 15” LED Display,

6Hr. battery backup. GSM Modem / Wi Fi modem in case GSM connectivity

is used or Wireless Router + modem in case Ethernet connection is being

used for remote access must be provided.

f) For remote data monitoring of the plant parameters by Purchaser a WP/IP

enabled Cellular Phone (Apple iPhone 3G) with complete functional PC

software / applications and remote linkage access through service provider

for call / email / data transfer / IP linkage for plant operations monitoring

throughout the 10 years operation and maintenance period shall be provided.

g) Remote Supervisory Control and data acquisition through SCADA

software at the purchasers location through Handheld device / GSM

cellular device with latest software/hardware configuration and service

connectivity for online / real time data monitoring/control complete to be

33


supplied and operation and maintenance/control to be ensured by the

supplier.

All major parameters should be available on the digital bus and logging facility for

energy auditing through the internal microprocessor and can be read on the

digital front panel at any time the current values, previous values for up to a

month and the average values. The following parameters should be accessible

via the operating interface display.

AC Voltage

AC Output current

Output Power

DC Input Voltage

DC Input Current

Time Active

Time disabled

Time Idle

Temperatures (C)

Inverter Status

Protective function limits (Viz-AC Over voltage, AC Under voltage, Over

frequency, Under frequency ground fault, PV starting voltage, PV stopping

voltage, Over voltage delay, Under voltage delay over frequency, Ground fault

delay, PV starting delay, PV stopping delay).

3.29 INVERTER/ARRAY SIZE RATIOThe Inverter continuous power rating shall be above 94% at full load.

3.30 InverterTechnical date sheet:-

The inverter shall continuously and control the utility interface within the

stipulated range:-

On three Phase side:-

Output voltage 280-380(+12.5-20%) VAC

Frequency 50HZ(+3 HZ, -3 HZ)

Maximum current ripple 4% PP

Reactive Power 0.95 inductive to 0.95 capacitive

3.31 Maximum Power Point Tracker (MPPT)Maximum power point tracker shall be integrated in the Inverter to maximize

energy drawn from the array. The MPPT should be micro processor based to

minimize power losses. The details of working mechanism of MPPT shall be

mentioned. The MPPT must have provision (manual setting) for constant voltage

operation.

3.32 Disconnection and Islanding

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Disconnection of the PV generator in the event of loss of the main grid supply is

to be achieved by in built protection within the power conditioner. This may be

achieved through rate of change of current, Phase angle, unbalanced voltage or

reactive load variants.

Operation outside the limits of power quality as described in the technical data

sheet should cause the power conditioner to disconnect the grid. Additional

parameters requiring automatic disconnection are:

Neutral voltage displacement

Over current

Earth fault

And reverse power

In case of the above, cases, tripping time should be less than 0.5 seconds.

Response time in case of grid failure due to switch off or failure based shut down

should be well within 5 seconds. In case of use of two Inverters capacity ,suitable

equipment for synchronising the AC out put of both the Inverters to the

ACDB/Grid should be provided.

3.33 Automatic reconnection after the grid failure is restoredINVERTER shall have facility to reconnect the inverter automatically to the grid

following restoration of grid, subsequent to grid failure condition.

The system should have integrated SCADA and software for plant control and

remote communication with web monitoring to monitor individual strings and

complete power plant.

4. ARRAY JUNCTION BOX, MAIN JUNCTION BOXES WITH STRING MONITORING FEATURE TO THE INVERTER :The junction boxes are to be provided in the PV yard for termination of connecting

cables. The J. Boxes shall be made of FRP/Powder Coated Aluminum with full dust,

water & vermin proof arrangement. All wires/cables must be terminated through cable

lugs. The J.Bs shall be such that input & output termination can be made through

suitable cable glands.

- Made of FRP or cast aluminum

- Copper bus bars/terminal blocks housed in the junction box with suitable

termination threads

- Conforming to IP65 standards and IEC 62208

- Hinged door with EPDM rubber gasket to prevent water entry.

- Single compression cable glands.

- Provision of earthing

- Suitable capacity MOVs provided within the box to protect against lightning

5. Plant Control, data logger & plant monitoring unitBasically, this unit should perform the following :

35


Individual Array monitoring via string monitoring system

Measurement and/or recording of energy parameters.

Simple data logger or energy meter to record the energy data on a pre-

determined interval basis.

Measurement & continuous acquisition of ambient air temperature, wind speed,

solar radiation, PV module temperature, individual string current, inverter output

voltage and current, output frequency

Operating state monitoring and failure indication.

Representation of monitored datas in graphics mode or in tabulation mode.

Controlling & monitoring the entire power system through remote terminal at

PEDA office at Chandigarh as well as from a local terminal.

Necessary hardwares & softwares shall have to be supplied by the contractor.

Both the softwares and hardwares required for interfacing the plant with SPS

office including CPUs, modems, Printers, UPS, Cellular device are to be

supplied and installed by the contractor as per Clause 3.27.

Remote control/ Instrumentation : The microprocessor control unit should have

the provision for installation of RS – 232/485 communication link, should remote

control and monitoring capability (by personal computer) be desired. All

parameters, status and indicators and targets accessible through the local

operator interface may be accessed remotely through these ports. Optional

analog outputs (0-5VDC) for AC powers, DC current, DC Voltage can be

supplied to interface with external data acquisition systems. Optional contacts

inputs from an external SCAD/RTU or other remote control device can be

provided within the inverter enclosure for remotely disabling or resetting the unit.

7. AC DISTRIBUTION PANEL BOARD 7.1 AC Distribution Panel Board (DPB) shall control the AC power from inverter, and

should have necessary surge arrestors. Interconnection from ACDB to mains at

LT Bus bar to be carried out and complete equipment along with metering to be

installed in the ACDB. Requirement/specifications of DCDB and ACDB may be

changed as per site conditions. An ACDB to be provided at the cable terminating

point emanating from 25KVA auxiliary transformer for interconnection control of

dedicated electrical loads.

7.2 All switches at the , circuit breakers, connectors should confirm to IEC

60947,part I, II and III.

8. CABLES & WIRES8.1) Cabling in the yard and control room : Cabling in the yard shall be carried out as

per IE Rules. All other cabling above ground should be suitably mounted on

cable trays with proper covers. Only LSHZ XLPE cables must be used.

36


8.2) Wires: Only FRLS copper wires of appropriate size and of reputed make shall

have to be used.

8.3) Cables Ends: All connections are to be made through suitable

cable/lug/terminals; crimped properly & with use of Cable Glands.

8.4) Cable Marking: All cable/wires are to be marked in proper manner by good

quality ferule or by other means so that the cable can be easily identified.

Any change in cabling schedule/sizes if desired by the bidder/supplier be got

approved after citing appropriate reasons. All cable schedules/layout drawings

have to be got approved from the purchaser prior to installation. All cable tests

and measurement methods should confirm to IEC 60189.

8.5)

- Multi Strand, Annealed high conductivity copper conductor

- PVC type ‘A’ pressure extruded insulation

- Overall PVC insulation for UV protection and confirm to IEC 69947

- Armoured cable for under ground laying

- All cables shall conform to BIS standards (IS 694) and (IS 1554)

- The size of each type of cable selected shall be based on minimum

voltage drop, however, the maximum drop shall be limited to 2%

- Selected cable should carry a current density of minimum

1.2Amp/Sq.mm

8.6) - All electrical control / power cables / wires inside the building to be fixed

in accordance with CPWD specifications for electrical works Part-I

internal only Rigid Steel Conduit should be used for wiring inside the

building

- Proper laying of cables have to be ensured in appropriate cable trays,

pipes / trenches as per site requirement.

- For laying / termination of cables, latest BIS / IEC codes / standards be

followed.

9. FIRE EXTINGUISHERS :The fire fighting system for the proposed power plant for fire protection shall be consisting

of :

- Portable fire extinguishers in the control room for fire caused by electrical short

circuits.

- Sand buckets in the control room

The installation of Fire Extinguishers should confirm to TAC regulations and BIS

standards. The fire extinguishers shall be provided in the control room housing the

batteries and PCUs.

10. LIGHTNING AND OVER VOLTAGE PROTECTION

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There shall be the required number of suitable lightning arrestors installed in the array

field. Lightning protection shall be provided by the use of metal oxide varistors and

suitable earthing such that induced transients find an alternate route to earth. Protection

shall meet the safety rules as per Indian Electricity Act. Lighting protection for array yard

and control room building has to be provided. All building earth conductors shall be

interconnected through the concept of earth mats for interconnection with separate earth

pits. For each earth pits necessary test points shall have to be provided.

11. EARTHING PROTECTIONEach array structure of the PV yard should be grounded properly. In addition the lighting

arrester/masts should also be provided inside the array field. Provision should be kept be

provided inside the array field. Provision should be kept for shorting and grounding of the

PV array at the time of maintenance work. All metal casing/shielding of the plant should

be thoroughly grounded in accordance with Indian electricity Act./IE Rules. Earth

Resistance should be tested in presence of the representative of PEDA after earthing by

calibrated earth tester. INVERTERS, ACDB and DCDB should also be earthed properly.

The 11KV side equipments and parts shall be earthed in compliance to Indian Electricity

Rules’1956, all non current carrying metal parts shall be earthed with two separate and

distinct earth continuity conductors to an efficient earth electrode.

12 TOOLS & TACKLES AND SPARES :After completion of installation & commissioning of the power plant, necessary tools &

tackles are to be provided free of cost by the contractor for maintenance purpose. List of

tools and tackles to be supplied by the contractor for approval of specifications and make

from PEDA.

A list of requisite spares in case of INVERTER comprising of a set of control logic cards,

IGBT driver cards etc, Junction Boxes, Fuses, MCCBs etc. along with spare set of PV

modules and batteries be indicated, which shall be supplied along with the equipment. A

minimum set of spares shall be maintained in the plant itself for the entire period of

warranty and Operation & Maintenance which upon its use shall be replenished. A

minimum spare parts list is enclosed at Annexure 1 in Section IX.

13. Plant electricals including transformers, circuit breakers and ODY13.1 Solar Photovoltaic Power Plant Electrical System

The technical requirements of design, manufacture, testing at works supply

installation testing & commissioning of all electrical equipment's required for the

Solar Photovoltaic Power Plant starting from the local control panel of Plant and up

to the Grid tie up with the State grid including all control protection, metering

equipment, step up generator voltage transform, 11kV outdoor switchgear kiosk and

balance of equipments complete in all respect shall be of high standard and quality

meeting the requirement of respective Indian standard. The brief particulars and

requirement of equipment is as under-

38


13.2 1.2MVA Step Up Transformer and 25KVA Auxiliary Transformer One number transformer of 1200 KVA shall be used for 1.0 MW SPV Power Plant..

Transformer LV side should be of same voltage as that of output of PCU and HV

side should be 11 KV. One number Auxiliary transformer mounted on H pole of 25

KVA, 415 V/11 KV The Bidder shall furnish Guaranteed Technical Particulars as per

Sheet-3. The detail specification of step up transformer is as under-

13.1.1 General Requirements:The intention of the specification is to provide information for the design of the above

mentioned transformers to be fully suitable in every respect for the functions

designated. It is required that the supplier agrees to furnish all apparatus, appliance

and material whether specifically mentioned or not, but which may be found

necessary to complete, perfect, or test any of the herein specified units in

compliance with the requirements implied in this specification.

All terminal screws, studs, nuts and bolts shall be in accordance with the

Indian Standards.

All electrical and mechanical equipment shall be designed and manufactured

so that no damage will result from transportation, installation and operation of

the equipment under the climatic conditions to which it will be subjected.

All materials used shall conform to this specification and appropriate

standards and shall be new in all respects.

13.1.2 Standards:The transformers, their accessories and fittings, transformer oil, etc. shall conform to

the latest edition of the following standards (as amended up to date) except where

specified otherwise in this specification:

1. Transformer. IS:2026

2. Transformer oil. IS:335/93

3. Bushings. IS: 2099, 3347,8603

4. Fittings and accessories for transformers. IS:3639

5. Code of practice for selection installation & IS:10028 maintenance of

transformer.

6. Guide for loading of oil immersed transformers. IS:6600

7. Method of impulse voltage testing IS:2070

8. Gas & Oil operated Relay. IS:3637:

9. Specifications for insulating kraft paper. IS:9335:

10. Specifications for solid insulating press Boards for electrical purposes.

IS:1576

11. Ready mixed paint, brushing zinc chromate, painting IS:104:

12. Determination of water content in oil for porcelain bushing transformers.

IS:2362:

39


13. Dimensions for clamping arrangements for bushings. IS:4257:

14. Selection, Installation and maintenance of transformers: Silica-gel IS:3401

and IS:10028:

15. Terminal Connector IS:5561:

16. Gas & Oil operated Relay. IS:3637:

Method of impulse voltage testing IS:2070:13.1.3 Electricity Rules Act & Rules:

All work shall be carried out in accordance with the latest edition of the Indian

Electricity Act and rules formed there under and as amended from time to time.

13.1.4 Type And Rating:(i) The transformers shall be of copper wound 630 kVA, 415V/11kV, 3

phase, natural cooled, double wound, core type construction, oil

immersed and shall be suitable for outdoor service as step-up

transformers ( At times however these may be required to work under

reversal of power also).

(ii) The transformers covered by this specification are to run in parallel with

transformers which are being installed or will be installed in future (for

same rating) and as such the characteristics of the transformers covered

in this specification for the sub-station will be identical so as to enable

these transformers to run in parallel. The technical particulars of

transformers required are as under:

a) Maximum continuous rating at reference : 630 kVA ambient temperature specified

b) Frequency : 50 Hzc) No. of phases : 3 phased) Rated primary Voltage on principal tap : 11 kVe) Rated secondary Voltage : 0.415 kVf) Winding connections :

i) HV side : Starii) LV side : Delta

iii) Vector group reference : YNd-11g) Type of cooling : ONANh) Percentage impedance at normal : 4.0 %

voltage & 75 deg.C average winding temp. between HV-LV with tolerance as per ISS.

i) Off load tap changer : Having 6 equal steps (7 positions) (in step of 2.5% of each to havevoltage variation of +5% to -10% on HV side Also match the range of equirement of HV voltage viz-a-viz Inverter output voltage.

j) Maxm. current density for HV & LV 3 Amp/mm sq (for Cu winding incl. tapped winding wound)

k) Neutral unbalance current Not exceeding 2.0%l) Type of terminal On HV side to suitable size of

cable for inter connection to indoor HT panel /Panther"

40


Conductor on HV sides as per design & LV Side:suitable for connecting cable thimble of suitable size cable on LV side/LT BUS as per design of bidder.

13.1.5 Efficiency:The percentage loading for the maximum efficiency shall be clearly stated at

unity power factor as well as 0.8 and 0.9. p.f.

13.1.6 Insulation:(i) The dielectric strength of the winding, given insulation and the bushings

shall conform to the values given in IS:2026 (Part.III)/1981 (or its latest

amendment) for highest system voltage of 12 kV, 1.1 kV and shall be

suitable for the following impulse test\power frequency test voltages.

SYSTEM HST.SYSTEM IMPULSE TEST PF TESTVoltage voltage Voltage Voltage---------- ------------- ---------------- ------------11 kV 12 kV 75 kVp 28 kV415 kV 1.1 kV - 2.5 kV---------- ------------- --------------- ------------

13.1.7 Temperature Rise:Each transformer shall be capable of operating continuously at their normal

rating without exceeding temperature rise limits as specified below :

----------------------------------------------------------------------------------------------------------------Type of Temp.rise Externalcooling. cooling

medium (Air)----------------------------------------------------------------------------------------------------------------1. Winding (Temp.rise ONAN 50 degree C. When the oilmeasured by resistance circulation is method) natural non directed2. Oil ( Temp.rise As above. 45 degree C. -measured by thermometermethod)----------------------------------------------------------------------------------------------------------------

The reference temperature conditions for which the transformers shall be designed are as

specified in clause "climatic conditions" The hottest spot temperature shall not exceed 98

degree C when calculated over an annual weighted average ambient temperature of 35 degree

C when transformer is loaded to its rated MVA. The transformer shall be capable of being over

loaded in accordance of IS: 6600/ 1972. Bushing and its terminal connectors shall have

minimum continuous current rating corresponding to 120% rated current of transformer at

lowest tap.

13.1.8 Impedances:The percentage impedance at 75 deg. C shall be 5.0% for the sub- station

transformers subject to tolerance as per IS: 2026. The duration of short circuit

41


with reference to the impedance voltage shall also be in accordance with the

latest IS: 2026.

13.1.9 Guarantees.The bidders are required to offer the transformers having no load losses and load

losses not exceeding the following values without any positive tolerance.

(i) No load loss at rated voltage, 1030 Watts

Rated current, rated frequency

(ii) Load loss at rated current, rated 5800 Watts

voltage, rated freq. and 75 Deg.C.

Further the purchaser reserves the right to reject any transformer, if during

inspection/testing, the tested no load/load losses and total losses exceed the

above prescribed losses by more than the following values as per ISS :

(a) Total Losses : +10% of the total losses.

(b) Component losses : + 15% of each component loss provided that

the tolerance for total losses is not exceeded.

The transformer could also be rejected if excess losses are less than above limits but

calculations suggest that there is not enough margin in the temp. rise values to be contained

within permissible limits to absorb such losses unless temp. rise test is repeated on the

transformer free of cost.

The supplier shall provide the design details of core assembly showing the construction details,

core diameter, net/ gross sectional area of the core assembly etc. The information must also be

given in respect of volts per turn at principal tap for normal voltage. The loss curves for

type/grade of steel laminations being used for the core shall also be provided.

13.1.10 Cooling : Each transformer shall be provided with ONAN type cooling.

The ONAN cooling of the transformers shall be by natural circulation of air

while the circulation of oil shall be effected by natural convection, the

maximum oil flow being assured by a method whereby the return flow of

cooled oil is made to enter the tank at a level coinciding with the bottom of

the hot columns of oil thus avoiding centre heads of cold oil at the bottom of

the tank. Out flow shall be arranged to coincide as nearly as possible with the

hot oil level at the top of the tank so that the total available difference will be

fully employed in circulating the oil round the shortest possible paths.

The windings of the transformers shall be designed to deliver continuously

rated kVA corresponding to ONAN cooling. Radiators shall be provided for

cooling purpose. These shall be directly mounted on the tank on both sides in

a balanced manner & not on one side only.

13.1.11 Transformer Core:

42


(i) The core shall be built up with thin lamination of high grade, non ageing,

low loss, high permeability, cold rolled, grain oriented silicon steel

specially suitable for transformer core. The particulars of laminated steel

to be employed shall be furnished along with DC magnetization, B-H and

iron loss curves.

(ii) If required after being sheared the laminations shall be treated to remove

all burrs and shall be re-annealed to remove all residual stresses. At least

one side of each lamination shall be coated with a double baked enamel

insulation coating which will not deteriorate due to pressure and the

action of hot oil. The nature of insulation shall be specified.

(iii) Every care shall be exercised in the selection, treatment and handling of

core steel to ensure that as for as practicable, the laminations are flat and

the finally assembled core is free from distortion.

(iv) The design of the magnetic circuit shall be such as to avoid discharges,

development of short circuit paths within itself or to the earthed clamping

structure and the production of flux components at right angles to the

plane of the laminations which may cause local heating.

(v) The core shall be rigidly clamped to ensure adequate mechanical

strength and to prevent vibration during operation. The core/clamping

bolts shall not pass through Core/Yoke and clamping structure shall be so

constructed that eddy currents will be minimum.

(vi) The core shall be provided with lugs suitable for lifting the complete core

and coil assembly of the transformer. The core and the coil shall be so

fixed in tank that shifting will not occur when the transformer is moved or

during a short circuit.

13.1.12 Flux Density:The flux density in any part of the core built from cold rolled grain oriented steel

shall not exceed 16000 lines per sq. cm. at any tap position necessary to

maintain No-load terminal voltage of 415 V on LV side as required. Due regard

shall also be given to limiting the flux density based on the characteristics of the

material used. Over flux in the core shall be limited to 12.5% of rated value to

ensure that core does not get saturated in the event of over voltage to the extent

of 12.5%. The core step section and flux density calculation shall be furnished.

The magnetizing current at rated voltage shall not exceed 2% of full load current

and at 112.5% of rated voltage shall not exceed 4% of rated full load current. The

above values are maximum & no tolerance shall be allowed.

13.1.13 Suppression of Harmonics:

43


The transformer shall be designed with particular attention to the suppression of

harmonics voltages especially in the third and fifth harmonics so as to eliminate

wave form distortion and any possibility of high frequency disturbances.

13.1.14 Winding:(ii) The copper windings shall be so designed that all coil assemblies of

identical voltage ratings shall be inter changeable and field repairs to the

windings can be made readily, without special equipment. The coils shall

be between adjacent sections by insulating spacers and bracers.

Bracings and other insulation used in the assembly of the windings shall

be arranged to ensure a free circulation of the oil and to reduce hot spots

in the windings. The windings shall be designed to reduce to a minimum

the out of balance forces in the transformer at all ratios. The double paper

covering insulation shall be used in HV & LV coils.

(iii) The insulation of the coils shall be suitable to develop the full electrical

strength of the windings. All materials used in the insulation and assembly

of the windings shall be insoluble, non catalytic, and chemically inactive in

the hot transformer oil, and shall not soften or otherwise be adversely

effected under the operating conditions.

(iv) All threaded connections shall be provided with locking facilities. All leads

from the windings to the terminal board and bushings shall be rigidly

supported to prevent injury from vibration. Guide tubes shall be used

where practicable.

(v) The windings shall be clamped securely in place so that they will not be

displaced or deformed during short circuits. The assembled core and

windings shall be vacuum dried and suitably impregnated. The Copper

conductor used in the coil structure shall be best suited to the

requirements and (vi) The material used for insulation and coils shall be

of best quality and if desired, invoices and manufacturers test certificates

shall be furnished. All permanent current carrying joints in the windings

and the leads shall be welded or braced except compression type which

may be used for terminal connections. Bolted connection may be used at

the bushings and at terminal board with suitable locking device. The

drying out procedure of the core coil assembly shall be indicated.

13.1.15 Fault Withstanding Capacity of Windings:All the windings shall be suitably designed to withstand short time rating for not

less than 2 seconds. The maximum temperature attained for short time rating

shall not exceed 250 degree C.

13.1.16 Insulating Oil:

44


(i) The oil for first filling shall be supplied with each transformer. The oil shall

be EHV grade. and shall comply IS:335/1993 and IS:1866 with latest

amendments.

(ii) Particular attention shall be paid to deliver the oil for topping up free from

moisture having uniform quality throughout in the non-returnable new

steel drums.

(iii) The quantity of oil for first filling of each transformer shall be stated.

Quantity of oil required for filling of conservator and radiators shall also be

stated.

(iv) The transformer oil purchased from M/s. Savita Chemical, M/s. Apar, M/s.

Raj Lubrichem, M/s. Raj Petroleum and M/s. Lubrichem shall only be

supplied. Invoice and test certificates of manufacturer of transformer oil

shall have to be furnished as and when desired by the Owner.

13.1.17 Tank :(i) The transformer tank and cover shall be fabricated from good commercial

grade low carbon steel suitable for welding and of adequate plate

thickness. The tank and the cover shall be of welded construction. All

seams shall be welded and where practicable they shall be double

welded. The transformer tank shall have sufficient strength to withstand

without permanent distortion.

(ii) At least one manhole/inspection cover with a welded flange and a bolted

cover shall be provided on the tank cover. The manhole shall be of a

sufficient size to afford easy access to the lower ends of the bushings,

terminals etc.

(iii) All bolted connections to the tank shall be fitted with suitable oil tight

gaskets which shall give satisfactory service under the operating

conditions. Special attention shall be given to the methods of making the

hot oil tight joints between the tank and the cover as also between the

cover and the bushing and all other outlets to ensure that the joints can

be remade satisfactorily and with ease , with the help of semi-killed

labour. Where compressible gaskets are used, steps shall be provided to

prevent over compression. Suitable guides shall be provided for

positioning the various parts during assembly or dismantling.

(iv) Lifting eyes or lugs shall be provided on all the parts of the transformers

requiring independent handling during assembly or dismantling. In

addition the transformer tank shall be provided with lifting lugs and

bosses properly secured to the sides of the tank, for lifting the transformer

either by cranes or by jacks.

45


(v) The design of the tank, the lifting lugs and bosses shall be such that the

complete transformer assembly filled with oil can be lifted with the use of

these lugs without any damage or distortions. The tank shall be provided

with two suitable copper alloy lugs for the purpose of groundings.

(vi) The main body of the tank shall have sufficient strength to withstand and

without permanent distortion

a) A vacuum of 760mm of mercury.

b) Continuous internal gas pressure of 0.7 atmospheres above

atmosphere pressure with oil at operating level i.e. the transformer

tank should be able to withstand 100% vacuum and also one

atmosphere pressure above atmosphere internal pressure.

(vii) The tank cover shall be belled to the tank and the transformer design

shall be such that at the tank will not split between the lowest and upper

cooler connections.

(viii) The exterior of transformer tank shall be thoroughly given one primary

coats & two finishing coats of durable oil and weather resistant paints of

enamel. The colour of the finishing coats shall be dark admiralty grey

confirming to colour code number 320 of IS.

13.1.18 Under Carriage:(i) The transformer tank shall be supported on a structural steel base

equipped with forged steel or cast steel, flat uni-directional rollers suitable

for moving the transformer completely filled with oil. The rollers should be

of Cast Iron with mild steel mounting arrangement and also mild steel

axle with mild steel split pin. The surface of roller should be machined and

axle should be of round shape.

(ii) Pulling eyes shall be provided to facilitate moving the transformer and

they shall be suitably braced in a vertical direction so that bending does

not occur when the pull has a vertical component.

13.1.19 Off Load Tap Changer Mechanism:(i) The off circuit tap changer shall be of high quality and robust in

construction. It shall be located at a convenient position so that it can be

operated from ground level by a standing operator. The handle of OCTC

shall be provided with a locking arrangement. Thus enabling the OCTC to

be locked in position. Arrangement for indicating of tap position shall also

be provided. It shall be suitable for local manual operations. The tap

changer shall be capable of permitting parallel operation with other

transformer of the same type. When one unit is in parallel with another of

same type, the tap changer shall not become out of step.

46


(ii) The OCTC shall be capable of carrying rated MVA on all taps. The

breaking capacity of the OCTC shall be compatible with the highest

system voltage and current based on maximum over loading permissible

under IS:6600 -1972 (150% of rated this) Step voltage of OCTC shall not

be less than 115% of 2.5% of the nominal phase voltage of the HV

winding and rated through current of OCTC at this voltage will not be less

than 150% of rated current of HV winding at lowest tap. The OFF Load

Tap Changer should be of following makes only:-

a) M/s Paragone Associates, Thane

b) M/s Alwaye, Bangalore

13.1.20 Conservator:(i) Oil preserving equipment shall be conventional conservator tank type.

The minimum oil level in the conservator tank shall not be below the level

of the bushing flanges.

(ii) Oil conservator tank shall be located well clear of the bare connection of

the transformer terminals. The conservator tank shall have adequate

capacity between highest and lowest permissible levels to meet the

requirement of expansion of the total cold oil volume in the transformer

and cooling equipment from min. ambient temperature to highest oil temp.

as per desired.

(iii) The total volume of the conservator shall be min. 10% of the total quantity

of oil in transformer .The inside diameter of the pipe connecting the

conservator to the main tank shall be min.50mm and it should be

projected into the conservator in such a way that its end is projected

30mm above the bottom so as to create sump for collection of impurities.

The min. oil level should be above the sump level.

(iv) A conservator complete with sump and drain valve shall be provided in

such a position as not to obstruct the electrical connections to the

transformer, having a capacity between highest and lowest visible levels

to meet the requirement of expansion of the total cold oil volume in the

transformer and cooling equipment from the minimum ambient

temperature shall be with 0 Deg. C to 90 Deg.C. The minimum indicated

oil level shall be with the feed pipe from the tank covered with not less

than 15mm depth of oil and the indicated range of oil level shall be

minimum to maximum.

(v) The oil connection from transformer tank to the conservator vessel shall

be arrange at a rising angle of 3 Deg. to 9 Deg. to the horizontal up to gas

and oil actuated relay and shall consist of 50mm inside diameter pipe.

13.1.21 Bushings:

47


(i) All main winding and neutral leads shall be brought out through outdoor

type bushings. The electrical characteristics of bushing shall be in

accordance with IEC-137 as well as IS- 3347/8603 and IS-1999. The

bushing shall be rated for highest voltage and current rating of the

respective windings. The current ratings of bushing shall be at least 150%

of the rated current at minimum tap to permit overloading.

(ii) The bushings shall have high factor of safety against leakage to ground

and shall be so located as to provide adequate electrical clearances

between bushings and between the bushings and ground parts. The

spacing between the bushings shall be adequate to utilize full flashover

strength preventing flashover between the phases or between phase and

ground parts under all conditions of operation. The creep age distance

shall not be less than 25 mm per KV.

(iii) All bushings shall be equipped with suitable solder less terminals of

approved type. The type and size shall be specified. All external current

carrying contact surfaces shall be placed adequately.

(iv) Bushings of identical voltage ratings shall be interchangeable .

(v) Special adjustable arcing horns shall be provided with HV bushing. Each

bushings shall be so co-ordinate with the transformer insulation that all

flashover occur outside the tank.

(vi) All porcelain used in bushings shall be of the wet process homogeneous

impervious to moisture and free from cavities or other flaws and

throughout verified and smoothly glazed. The glazing shall be of the

uniform colour and free from blisters, burns and other defects. All

bushings shall have puncture strength greater than the dry flashover

voltage.

13.1.22 Center of Gravity.The center of gravity of the assembled transformer shall be low and as near the

vertical center line as possible. The transformer shall be stable with or without oil.

13.1.23 Fittings and Accessories:Each transformer shall be provided with the following fitting and accessories in

accordance as specified in IS: 2026/1977:

i) 150 mm dial type thermometer for oil : A dial type indicating thermometer

with maximum pointer of robust pattern mounted in the marshalling box of

the transformer at a convenient height to read the temperature in the

hottest part of the oil and fitted with alarm and trip contacts. Adequate

thermometer pockets shall also be provided on the transformer tank.

48


ii) Two winding temp indicators, One for HV and other for LV winding.

Current transformer for WTI shall have secondary current of rating of 2

Amp.

iii) One oil drain cum sampling valve for main tank with plug or core plate of

suitable size with locking arrangement.

iv) One filter valve located at the top of the tank on the LV side. The opening

of this valve shall be baffled to prevent aeration of oil.

v) One filter valve located near the bottom of the tank on the HV side of the

transformer.

vi) Air release device. It shall be of adequate capacity and shall be provided

to release the trapped air during/after filling of the oil.

vii) Explosion vent (with diaphragm /Pressure release device)

viii) One No. double float Buchholz relay shall be provided with alarm and

tripping contacts to detect accumulation of gas and sudden changes of oil

pressure, complete with shut-off valves on either side and flange coupling

to permit easy removal without lowering oil level in the main tank, a bleed

valve for gas venting and a test valve. The Buchholz relay shall be of best

indigenous make having ISI certification.

ix) Detachable radiators complete with shut off valves as necessary for

cooling as per clause 3.15.

x) An oil conservator having detachable end plates, with following

provisions.

a) Magnetic type oil level guage with low level alarm contacts.

b) One oil filling hole with plug and drain valve on the conservator.

c) one prismatic oil level guage having painted/embossed marking

as min., normal, and max. oil level.

d) Silica gel breather with Oil seal and Dehydrating agent.

xi) Eye bolts and lugs on all parts for ease of handling.

xii) Two grounding terminals as per clause No.3.20.5.

xiii) Rating, Diagram and terminal marking plates :

Rating, diagram and terminal marking plates of stainless steel or brass for

transformers and other accessories giving details as per ISS-2026 shall

be provided. Value of full wave (1.2/50 micro second) impulse level, short

circuit current, its duration, weights of all important items, Impedances,

loss values at normal/extreme taps and Postal address. Performance

guarantee clause 3.34 shall also be indicated.

xiv) All transformers shall have the marking in paint on the body for

identification as per Indian Standard or as instructed by purchaser.

Further, the following should be embossed at the top of the tank cover.

49


a) Sr. No. of the transformer.

b) The details of P.O. i.e. Order No. & Date.

c) Name of the firm.

d) Month and year of manufacture.

xv) Bimetallic terminal connectors suitable for "ACSR Panther" for HV. While

for LV bushing as per 5 (xii) above and earthing clamps should be as per

IS: 5561.

xvi) Suitable weather proof cubicles (Marshalling box) for housing the local

control equipment for fans, terminal blocks, for current transformer

secondary’s and for mounting winding temperature indicators and oil

temperature indicator as (i) and (ii) above.

xvii) HV and LV bushings with adjustable arcing horns 3 Nos. and 4 Nos.

respectively.

xviii) Triple pole type off load tap changer as detailed above.

xix) Rollers:

Transformers shall be provided with Four numbers of flat uni-directional

rollers.

xx) Skids:

xxi) Hauling Eyes:

Hauling eyes shall be provided on all the four sides of the transformer

base.

xxii) Jacking Pads :

Four, sturdy jacking pads shall be provided for lifting complete transformer

to enable rotation of its wheels through 90 degree for pulling on

transformer tank. Lifting height and safe capacity of jacks shall be

specified in Bid.

xxiii) Lifting Lugs:

Two sets of forged or tested mild steel plate lifting lugs, one set for top

cover, core and coil assembly and other set of complete transformer shall

be provided. Lifting lugs shall be of adequate strength and size for

attaching steel rope slings. Should lugs for lifting complete transformer be

located on the base, sling guides shall be provided on cover.

xxiv) Inspection Covers:

One inspection covers of sufficient size for access to the interior of the

tank shall be provided on the cover. The inspection covers shall be

provided with suitable lifting arrangements.

xxv) OFF CKT Tap Changer.

xxvi) Axles & Wheels.

50


All type of valves shall be of gun metal except radiator shut off valves

which may be of cast iron/steel. All valves shall be provided either with

blind companion flanges or with pipe plugs for protection.

The makes of fitting & accessories will be Specifications as under:-

S.No. Fitting & Accessories Makes1 Buchholz relay Atvus, Sukrat, Suvidha.2 Winding Temperature

IndicatorOIT/WTI Model integrated RTD Scheme for ROTI/RWTI with remote indicator of M/s Preci Measure Control Pvt. Ltd. or equivalent make.

3 Magnetic type oil level guage Atvus, Sukrat, Instrument & Control

4 Radiator Valve Hari Industries, Atvus, Vinayak, Vimal Techno

5 Filter valve & Drain valve Utam, Punjab Metal, Leader, Hari Ind., Neuman Ind.

6 Oil Temperature Indicator OIT/WTI Model integrated RTD Scheme for ROTI/RWTI with remote indicator of M/s Preci Measure Control Pvt. Ltd. or equivalent make.

Radiator valves shall have clear & distinct OPEN/CLOSE indication

embossed/ casted as well as painted on the both sides of main body of

valve.

13.1.24 Factory Assembly And Tests:The transformer shall be completely assembled and tested at the Factory.

Routine and Acceptance tests as per specification are to be conducted and no

deviation in respect of conducting these tests will be acceptable. No extra

charges for these tests will be paid. Test charges shall be part of cost of the

equipment. If purchaser selects to send a representative, all tests shall be carried

out in his presence. Type test certificate shall be furnished before start of supply

13.1.25 Routine Tests:Each completed transformer shall be subjected to following routine tests as per

IS: 2026 Part. I & III (latest amendment). No extra charges for any of the tests

shall be paid. No deviation shall be acceptable. If the supplier desires, he may

not fix radiators on transformers(other than the one which is to be type tested)

during routine testing. However in that case, radiator manufacturer's test

certificate shall be furnished for reference of inspecting officer with undertaking

that supplier shall be responsible for proper alignment/fixing of radiator on

transformer at site.

a) Measurement of resistance of each winding.

b) Measurement of turn’s ratio between HV-LV windings at each tap.

c) Checking of polarity and phase relation-ships for each winding.

d) Measurement of no load loss and no load current.

51


e) Positive phase sequence impedance/short circuit impedance between

HV-LV windings on minimum, maximum and normal taps.

f) Separate source voltage withstand test.

g) BDV test on transformer oil.

h) Induced over voltage withstand test.

i) Measurement of neutral unbalance current.

j) Regulation at rated load at unity, 0.90 and 0.80 lagging power factor.

k) Load losses measured at rated frequency by applying voltage sufficient to

produce the rated relevant current in one winding with the other winding

short circuited.

l) Measurement of insulation resistance.

m) The total losses shall comprise of the No Load Losses, load losses at

rated output duly converted at 75 degree C average winding temperature

and shall also be indicated in the test report. Load losses shall be that

corresponding to rated load on HV & LV winding.

n) Routine dielectric tests as per IS:2026(Part.I & III), 1981.

o) Check complete transformer against approved outline drawing, provision

for all fittings, finish oil level etc.

13.1.26 Type Tests:Type test certificate shall be furnished with tender and before start of supply for

approval.

13.1.27 Tests at SiteAfter erection at site all transformer(s) shall be subjected to the following tests:

i) Insulation resistance test.

ii) Ratio and polarity test.

iii) Dielectric test on oil.

In case the equipment is not found as per the requirements of the

purchase order, all expenses incurred during site testing will be to the

tenderer's account and the material shall be replaced by him at site, free

of cost.

13.1.28 Further Tests:The purchaser reserves the right of having other reasonable tests carried out at

his own expenses either before dispatch or during performance guarantee period

from Govt. approved/ Govt. recognized lab. to ensure that the transformer

complies with the requirements of this specification after due intimation to the

supplier. In case the equipment is not found meeting the requirement of PO /

specification, all expenses incurred for such testing will be on supplier’s account

and the material shall be replaced by the supplier at site free of cost

13.1.29 Frequency and System Voltage :

52


The transformer shall be suitable for continuous operation with a frequency

variation of plus minus 3% from normal of 50 cycles per second without

exceeding the specified temperature rise. The highest system rated voltage shall

be 12 kV. However the flux density requirements shall be as per this

specification.

13.1.30 Drawings:(i) The drawings and the technical literature list below shall be submitted.

a) General outline drawings showing front, side elevations and plan

views of the transformer and all accessories and external features

with detailed dimensions, net and shipping weight, crane lift for

undertaking and for erection/ removal of bushing, size of lifting

and pulling eyes, HV & LV terminal clearances, live terminal to

ground clearances, quantity of insulating oil etc.

b) Core assembly drawing showing complete constructional details

and flux density calculations & details of insulation.

c) Drawings giving details of name plate & terminal marking and

connection diagrams.

d) Drawings of bimetallic terminal connectors with test certificates.

Thermal / dynamic calculations; to provide transformers capability

to withstand short circuit under worst conditions.

(iii) Any shop work done prior to approval of the drawing shall be at the

supplier's risk. The supplier shall make all such changes in the design as

are considered necessary to make the equipment conform to the

provisions and intent of this specification without any additional cost to the

purchaser.

(iv) Each drawing shall be identified by a drawings number and each

subsequent resubmission / revision or addition to the drawings or

procedure. All drawings shall be thoroughly checked for accuracy and

completeness and signed or initialed by a responsible officer of the

contractor.

(v) Checking and approval of the drawings by the purchaser is for the benefit

of the supplier and shall not relieve the supplier of full responsibility for

ensuring correct interpretation of design drawings and specifications or

for completeness and accuracy of the shop drawings and relevant

specifications.

Notes:1. The Tolerance in weight and Dimension of the transformer shall not be more than (+/-)

5%.

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2. Minimum external electrical clearance after mounting the bi-metallic terminal connectors

in position shall be maintained as per relevant standards.

3. Make of each accessories/components shall be clearly and invariably indicated in the bill

of material. Further following make(s) of bought out items are acceptable to the

department.

i) Bushings. JSI /CJI /WS

ii) Bimetallic terminal connector Milind Engineering/Vinayak/Best &

Crompton/ Nootan

iii) OFF circuit tap changer Alwaye

iv) Oil temperature indicator - Press & forge / Precimeasure

/ATVUS/Sukrut Udyog / Perfect control.

However other makes of bought out items are also acceptable, if it is of “ISI mark” or

type tested for which bidder shall furnish attested Photostat copy of valid ISI certificate /

type test report from Govt. approved/ recognized lab. The type test report should not be

older than 5 years.

Installation & CommissioningMainly following activities are required to be carried out before commissioning of Power

Transformers:-

a) Assembling of Power Transformer accessories.

b) Testing activities in presence of Purchaser such as

(i) Ratio Test

(ii) Megger Value

(iii) Magnetic balance.

(iv) Oil BDV

(v) Earth Resistance

(vi) Buchhloz Relay checking.

(vii) WTI/OTI/MOLG (oil level) checking.

(viii) Checking of points of leakage of oil from Transformer body/

Radiator/Valve,

(ix) Setting of Relays in Panel

13.2 Technical Specification of 12 kV Indoor Switchgear and Control PanelsThis 3 pole, 50 Hz, 12 KV switchgear and control gear panels shall be fitted with

12 KV vacuum circuit breakers including voltage transformers, current

transformers, metering instruments, protection relays etc. The power system is

with neutral solidly earthed. The circuit breaker and protective devices shall be of

latest design so as to ensure rapid and efficient interruption of fault current, low

arc energy, small arcing time, complete phase segregation and freedom from fire

hazards.

13.2.1 Standards :

54


The circuit breaker/metal enclosed switchgear, Voltage transformers, current

transformers and all other equipment shall also comply with the requirement of

following latest edition of relevant Indian standards. Voltage transformer and

current transformers shall be mounted within the panels.

S.No. IS/IEC Reference Specification

1. IEC-298 A.C. Metal – enclosed and control gear for rated voltages above 1KV and including 72.5KV

2. IS-3427 A.C. Metal – enclosed and control gear for rated voltages above 1KV and including 52KV.

3. IS-8623 Specification for Low Voltage Switchgear and Control gear assemblies.

4. IS-13118 IEC-56 Specification for High Voltage AC Circuit Breakers.

5. IEC-529 Degrees of Protection.6. IS-5578 & 11353 Making and arrangement for switchgear bus

bar main connections and auxiliary wiring.7. IS-325 Specification for 3 Phase Induction motors.8. IS-2629 Recommended practice for not dip

galvanizing of iron and steel.

9. IEC-137 Bushing for AC Voltages.10. IS-3347 Porcelain Transformer Bushings.11. IS-5561 Terminal Connectors12. IS-3156 Voltage Transformers13. IS-2705 Current Transformers14. IS-3231 Electric relays for power protection.15. IS-13010 -16. IS-13779 Static Energy Meters17. IS-8686 Static Protection Relays18. IS-1248 Electrical measuring instruments19. IS-2099 High Voltage Porcelain Bushings.20. IS-10118 Minimum clearances for Outdoor

Switchgear.21. IEC-694 Common Clauses for High Voltage

Switchgear and Control gear.22. IEC-60255 & IEC-61330 Numerical Relays

a) Particulars of System :i) Nominal system voltage : 11 KV

ii) Highest system voltage : 12 KV

iii) Frequency : 50 Hz

iv) No. of phases : 03

v) Neutral earthing : Effectively earthed

b) Service Conditions :The equipment should operate satisfactorily under the climatic

conditions specified in this specification. The reference maximum

ambient Air temperature may be taken as 50 Deg. C. as against

40 Deg. C. The permissible temperature rise for various

equipments offered should therefore be derated accordingly.

13.2.2 Principal Parameters

55


a) Circuit Breakers : Rating and characteristics of circuit breakers 1. No. of poles : 32. Class : Indoor3. Rated voltage : 12 KV4. Rated insulation level

i) Light-ning impulse voltage : 75 KV (Peak)ii) One minute power frequency : 35 KV (rms) withstand voltage.

5. Rated frequency : 50 Hz6. Rated normal current : 630 A7. Short circuit breaking capacity : 16 KA8. Short time withstand current : 16 KA for 3 secs.9. First pole to clear factor : 1.510. Protection class : IP 4X11. Maximum opening time : 5 Cycles12. Rated operating sequence : 0-3min-CO-3min-CO13. Minimum operations at full : 100 rated short circuit breaking current.14. Rated Breaking Capacity

i) Symmetrical : 16 KAii) Asymmetrical : As per ISS

15. Rated making capacity : 2.50x16 KA16. Operating Mechanism : Motor operated Spring charged closing

mechanism or magnetic actuator.17. Heater/Lamp/Socket : 240 V A/C18. Control Voltage : 110V DC

b) Characteristics of the operating mechanism of Circuit breaker and

associated equipment :

i) Method of operation : The circuit breakers shall be equipped with

power operated mechanism to operate all the three phases

simultaneously using 220/240V universal motors operated spring

closing mechanism or magnetic actuator. The circuit breakers

shall also be provided with hand operated spring closing

mechanism or magnetic actuator. The Circuit Breaker shall have

electrical and mechanical tripping arrangements under various

conditions. In case of spring closing mechanism no main spring of

the mechanism shall be plated, powder coated or given any other

treatment so that spring property is not lost.

ii) Number and type of spare, auxiliary switches : Adequate number

of spare auxiliary switches/ contacts both of normally open and

normally close type but not less than four each shall be provided

on the circuit breaker for use in the indication and controlling

scheme of the circuit breaker.

iii) Rated supply voltage and rated supply frequency : The rated

voltage for the auxiliary supply shall be 240 V, 50 Hz AC supply.

c) Constructional features:The circuit breakers shall be triple pole metal clad truck mounted

horizontal drawout type enclosed in cubicle made of CRCA sheet steel of

minimum 2 mm thickness and shall comply with latest edition of relevant

IS. The cubicle/panels shall be vermin proof and dust tight. The cubicle 56


shall be of folded type construction. Panel width shall be 610 mm. ± 50

mm. The switchgears and control gear shall be complete with all

necessary supporting frame work, nuts and bolts etc. for securing the

same to the floor. The operating mechanism shall operate (close/open) all

the three phases simultaneously. The operating mechanism, links etc.

should be accessible for maintenance. Mechanical safety shutters should

be provided between breaker and panel. Engagement and

disengagement of auxiliary supply should be automatically linked through

the movement of the truck so that in service condition auxiliary supply is

automatically made. All six terminals shall brought out of cubicle through

appropriate class of cable termination and sealing kits. All the breakers

shall be supplied with necessary clamps suitable for appropriate current

ratings. Suitable arrangement of earthing the switchgear and control gear

panels shall be provided. The arcing contacts shall be made of

homogeneous special alloy so that surge voltages are reduced to

negligible level and multiple arc re-ignition is eliminated. All the

connecting bus bar shall be made of copper for these indoor circuit

breakers. For indoor panels, SWITCHGEAR (circuit breakers, CTs, PTs

etc.) and control gear (relays, C&R panels meters etc.) shall be mounted

on the same panel. A set of air insulated electrolytic copper bus bars with

PVC sleeves or PVC insulation are to be provided for all indoor

switchgear panels. The switchgear panels shall be provided with the

arrangement for extending the bus bar and inter-connecting bus bars.

Their supports, nuts and bolts etc. will be supplied loose. The region of

such inter connection shall normally be blanked on panels. The bus bars

should be of electrolytic copper with permissible limits of current density.

Size of the bus bar and current density should be specified in the tender.

The bus bar conductor shall conform to IS:8034. The bus bar shall be

rated for 16KA for 3 Seconds. Painting of panel cubicle shall be epoxy

based powder coated. The paint shade of indoor panels shall be shade

631 as per IS-5.

d) Vacuum Circuit Breaker:The three phase vacuum circuit breakers will have three interrupters (one

interrupter per phase) mounted on same carriage. The interrupters shall

be air insulated in epoxy resin tank or with epoxy resin phase barriers.

Each interrupter shall have fixed and moving contacts in sealed envelope

having vacuum below 10-6 torr. The metallic bellow shall permit axial

movement of moving contact and act as vacuum seal. The contacts shall

have requisite mechanical strength and good electrical and thermal

57


conductivity and shall be made of copper chromium alloy. Complete

literature of vacuum bottles shall be furnished with the tender.

e) Voltage Transformers :1. Highest equipment voltage : 12kV

2. No. of phases : 3

3. Insulation level

a) Impulse withstand voltage : 75kVP

b) One minute power frequency withstand voltage on

i) Primary winding : 35 kV rms

ii) Secondary winding : 2kV rms

4. Frequency : 50 Hz.

5. Transformation ratio : 11000/110 V

6. Rated output : 30 VA / phase

7. Accuracy class : 0.5 or as per requirement

8. Winding connection : Star/Star

9. Rated voltage factor : 1.2 continuous and 1.5 for 30 seconds

10. Type of insulation : Resin cast VTs shall be provided with HRC

type fuses on the secondary side. The VT fuses on primary side

shall also be provided with all safety precautions. One of the

secondary terminals of the VTs shall be solidly earthed. One

number three phase voltage transformer of this rated output will

be required for each incoming indoor panel. Voltage transformers

should be mounted in the top part of the cubicle for ease of

replacement of fuses.

f) Current Transformers :1. Rated voltage : 12 kV

2. Insulation level

a) Impulse withstand voltage : 75 kVP

b) One minute power frequency voltage on

i) Primary winding : 35 kV rms

ii) Secondary winding : 03 kV rms

3. Frequency : 50 Hz

4. Rated continuous thermal : 120% of rated primary current

5. Short time thermal rating current : 16 KA for 3 Sec.

6. Transformer CTs of ratio 200-100/5-5A for incoming type indoor

panel and 200-100/5-5A for outgoing type panel.

7. Rated output/accuracy etc. for CTs. Core-I Core-II

58


a) Rated output 10 VA 10 VA However VA burden should not

be less than suitable for A.C. series trip requirement with

shunt trip arrangement.

b) Class of accuracy 5P 0.5 S

c) Accuracy limit factor 15 -

d) Purpose Relaying Metering

8. Max. instrument security factor - 5

9. Type of Insulation Resin Cast

12. kV current transformers shall be single phase. The core shall be of

high grade non ageing laminated silicon steel of low hysterics loss

and high permeability to ensure high accuracy for both normal and

fault current.

g) The rating of secondary winding shall be 5 Amps. However, the current

transformers will have to satisfy the requirement of rated VA burden,

class of accuracy, accuracy limit factor and short time thermal rating as

have been specified in clause No. 3.5 at all transformation ratio.

Magnetization curves corresponding to all secondary taps must be

submitted with the tender. The ratings of current transformers of all

classes regarding ratio error, knee point voltage, resistance of secondary

winding etc. shall have to be co-ordinated with the requirements of

protective relays and protection scheme, without any extra cost.

h) All the type test certificates are also needed to be furnished with tender.

i) The tenderer shall also furnish alongwith the tender, complete

general arrangement, schematic and outline diagrams indicating

the mounting arrangement and position of current transformers,

voltage transformer terminal blocks etc. Type of current

transformer and voltage transformer employed shall also be

clearly stated.

13.2.3 Indicating and Integrating Meters/Instruments :

a) All indicating instruments shall be of switchboard type, back connected, suitable

for flush mounting and provided with dust and vermin proof cases for tropical use

and finished in suitable colour. All instruments shall have practical laboratory

means for adjustment of accuracy. The limits of errors for ammeters/voltmeters

shall be those permissible for class 1.5 instruments as per IS:1248. The

ammeters and voltmeters shall be suitably scaled to indicate the current/voltage

for all the rating of current/voltage transformers. A phase selector switch with

four/six position shall be used to measure the current/voltage of each phase/line.

59


The meters shall be located at eye level to facilitate observation of readings

correctly.

b) HT Trivector Meter :HT Trivector Meter shall be as per Discom norms and shall be intimated while

placement of order. The meters shall be located at eye level to facilitate

observations of readings correctly.

c) Relays :11 kV Interconnection breaker – 630 A VCB equipped with either of the Multi

functional Micro processor based numerical relays:

11kV out going feeder shall have following protection functions as a minimum:

Under and over voltage protection (27/59)

Under and over frequency protection (81 O/U)

IDMT + Instantaneous O/C, S/C (50/51)

IDMT + Instantaneous E/F protection (50/51)

Breaker failure protection (50BF)

Trip circuit supervision (74TC)

Lockout (86)

Requirement of Reverse power relay etc may also be indicated in the tender.

Requirement of i) Overload protection (49) ii)Negative sequence protection (46)

iii) Directional determination for Over current, phases and earth fault sequence

should also be indicated in the tender. For 11 kV Incoming feeders to the 630kVA

Oil filled transformers, 630 A VCB equipped with following protection functions as

a minimum:

IDMT + High set and Instantaneous O/C, S/C (50/51)

IDMT + High set and Instantaneous E/F protection (50N/51N)

Overload protection (49)

Breaker failure protection (50BF)

Trip circuit supervision (74TC)

Lockout (86) 630kMVA Oil filled transformer protections:

Standby EF protection (51G)

Restricted Earth fault protection (87N)

Bucholz trip (63T) – (transformer mounted via marshalling box)

Oil Temperature trip (26T) - (transformer mounted via marshalling

box)

Winding Temperature trip (49) - (transformer mounted via

marshalling box)

Pressure Relief Device - (transformer mounted via marshalling

box)

60


As All the transformers are connected to the same bus of Switchboard so No

separate synchronizing facility should be required as all the Inverters are

connected to the Grid and synchronized accordingly. 630kVA transformer feeder

to 415V Main LT panel Outgoing (ACB with Microprocessor based release SR21i

(L&T make or equivalent) with following protection functions as a minimum):

Standby EF protection (51G)


Instantaneous E/F protection (50N/51N)

Lockout (86)

Inter trip features should be are provided to trip the 11kV transformer incomer

feeders on any transformer faults / protection and emergency trip (near the

transformer) at the 415V Main LT panel. 415V Main panel power feeds from

Power JBs (MCCBs with Microprocessor based release RC10 (L&T make) with

following protection functions as a minimum) :


Instantaneous E/F protection (50N)

The circuit breaker shall be fitted with shunt trip coil for operation on Numerical

relay with communication facility with standard open protocol / SCADA

compatibility. The coils should be rated for 110VDC operation on station battery.

Additionally standard IED (Intelligent Electronic Devices) should be provided with

each breaker panel to provide scada compatibility. Three phase protection relays

shall be Numerical Over-current & Earth Fault protection having 2 element for

over current and one for earth fault protection. The setting for over-current shall

be 50- 200% (in step of 1%) for earth fault element from 5 to 80% (in step of 1%).

These relays shall be numerical / non directional with selectable curve from all

standard 5 IDMT curves. The relay should be able to store a minimum of two

previous fault values including fault level and phase. The relay should be fully

compatible to Scada system. The relay shall be numerical type mounted in flush

pattern on the panel board. The relay should be rated for 5 Amp. CT secondary.

The relay should conform to IS:3231 & 8686 specifications. The tenders shall

furnish the detail in this regard alongwith the offer. All the relays shall be provided

with test blocks in panel so designed that the relays may be tested at site. The

relays should have provision of testing either through test block or test plug easily

accessible by injecting the voltage / current/frequency (as applicable) from

external testing instruments /source without first disconnecting/ reenergizing the

primary electrical circuit protected by the relays. Facilities for isolating the tripping

circuit during such testing shall be also provided. The requirement of test block

shall not be applicable in case of draw out type relays which can be tested by

using test plug without removing the relay from its casing. The testing facilities

61


provided in the relays shall be specifically stated in the bid. Necessary test plug

etc. as may be required for proper testing shall be included in the contractor’s

scope of supply. One test plug with five panels or part thereof are to be supplied.

13.2.4 Wiring:All wiring shall be of switch board type consisting of copper conductor of 1.5 Sq.

mm. for alarm / annunciation / control circuits and 2.5 Sq.mm. for CT and all

other Circuits insulated with polyvinyl chloride insulation suitable for 660 Volt

service and in accordance with relevant IS:732. Polyvinyl Chloride used shall

have excellent resistance against burning, moisture, oil and vermin and shall be

finished with clear colour. Rubber insulated wiring shall not be acceptable.

Tenderers shall furnish the details of method being adopted by them for Joint /

Connections. All instruments and Panel wiring shall be of heat resisting and self

extinguishing type in compliance with IS. Plastic or porcelain cleats of the limited

compression type shall be used for holding wiring runs. All wires shall be suitable

for bending to meet the terminal studs at right angles. Metal cases of all

apparatus mounted on panels shall be separately earthed by means of copper

wire or strips. The following colour scheme of the wiring shall be used as per

IS:375.

a) AC three phase circuits :

i) No.1 Phase : Red.

No.2 Phase : Yellow.

No.3 Phase : Blue

ii) Neutral Conductor : Black

iii) Connection to Earth : Green

b) D.C. circuits : Grey

13.2.5 MIMIC DIAGRAM :

For indoor panels painted colour bands shall be used for the mimic bus. The

mimic diagram shall be on eye level. Equipments such as current transformers,

voltage transformers etc. shall be represented by suitable symbols. The colour

shall be Red Shade 537 of IS-5.

13.2.6 INDICATING LEDs / LAMPS :

Indicating LEDs shall be provided on the control board to indicate the following:

1. Visual indication of ON and OFF position of each circuit breaker.

2. Trip circuit healthy indication.

3. Auto trip indication for each circuit breaker panel.

62


4. VT supply indication.

13.2.7 TEST TERMINAL BLOCKS :Two nos. test terminal blocks shall be provided one for testing of relays and other

for testing meters. They shall be of switch board, back connected type for front of

panel mounting. The test blocks shall provide complete isolation of meters,

instruments, etc. and the arrangement shall be such that testing power could be

connected at the test block from any external source or may be taken from the

instrument transformers. Provision shall be made for short circuiting current

transformers. Suitable sealing arrangement shall be provided in test terminal

blocks.

13.2.8 FERRULES :Ferrules engraved/printed with the same number, letters or symbols as indicated

in the connection and wiring diagram shall be provided on the terminal ends of all

wires for identification of circuits for inspection and maintenance. Ferrules shall

be of strong and flexible insulating material with glossy finish to prevent

adhesion. They shall be engraved / printed and clearly marked and shall not be

effected by dampness. Ferrule numbering shall be in accordance with IS:375.

The same ferrule number shall not be used on wires in different circuits on a

panel.

13.2.9 SPACE FOR CABLES AND CABLE GLANDS :Sufficient space for receiving the cables inside the switch board at the bottom of

the cubicles and mounting arrangement for the terminal cable glands shall be

provided. Cable gland plates should be above the ground level for the ease of

working.

13.2.10 SCHEDULE OF REQUIREMENTS :

Item No. 1 :12 kV/630A Amp. VCB Incoming Switchgear panel for transformer of

630kVA for indoor installation 2NOs+1 Spare capable to work for incomer

and outgoing feeder at a time when any of one is faulty. In case more no

of transformer i. e 2 x 315kVA are used then 2x315 KVA shall be

connected one incomer .

1. 12KV/630A Circuit Breaker vacuum type 1 No. draw out with

provisions of manual tripping by means of A control switch/push

button.

63


2. Motor Charged Spring operated closing 1 No. mechanism or

magnetic actuator operated device.

3. Set of Numerical relay s as detailed at para’ Relays “above 1 set.

with communication facility and standard open protocol / scada

compatibility alongwith IED for every feeder for purpose of scada.

Communication on RS-485 Port – Mod Bus – Open Protocol.

4. Single phase 12 KV current transformers 3 Nos. of ratio 200-100

/5-5A suitable for metering and protection. The class of accuracy

shall be 0.5 S for metering and 5P15 for protection. Rated burden

(output) shall be 10 VA for each secondary winding. Instrument

Security factor for metering core shall not exceed 5.

5. 11000/110 Volts three phase voltage 1 No. transformers having 30

VA/phase burden and class of accuracy 1.0. The transformer shall

be star-star connected.

6. Three phase digital power factor meter, 1 No. accuracy as 1.5.

7. Flush type switchboard mounting pattern 96X 1 No. 96 sq.mm

Digital AC voltmeter of class 1.5 accuracy suitable for 110 V phase

to phase secondary scaled for 0-15 KV.

8. Voltmeter phase selector switch to 1 No. indicate phase to phase

and phase to neutral voltage of all the three phases.

9. Indicating LEDs coloured red, amber and 3 Nos. blue for PT supply

indication.

10. Arrangement for reception of incoming and 2 Nos. outgoing cable

connection alongwith cable termination and sealing kits of requisite

for suitable size of XLPE power cables.

11. Set of three phase air insulated main 1 No. Electrolytic copper bus

bars of 630 A continuous current rating with PVC insulation or

sleeves.STC rating 16 KA for 3 seconds.

12. Mechanical ON/OFF indicator. 1 No. 13. Operating handle for

independent manual 1 No. closing mechanism.

14. Red indicating lamp/LED for ON indication. 1 No.

15. Green indicating lamp/LED for OFF indication. 1 No.

16. Auxiliary switch having minimum of 8 1 No. contacts 4 normally

open and 4 normally closed.

17. Flush mounting pattern 96x96 sq.mm. 1 No. Digital ammeter of

class 1.5 accuracy for 5 Amps. CT secondary scale 0-150A.

18. Ammeter selector switch to indicate phase 1 No. current in all three

phases and with OFF position.

64


19. AC HT Tri vector meter 1 No. 20 Auxiliary Relay for Transformer 1

Set. protection functions.

21. Automatic door CFL with Switch. 1 No.

22. 240V, 80W AC single phase 1 Nos. anti condensation heaters with

thermostat (0-60 Deg. C) and switch.

23. Anti pumping contactor. 1 No.

24. Operation Counter. 1 No.

25. Test terminal blocks for metering and 2 Nos. relays, 3 phase 4

wire.

26. Fault trip yellow LED. 1 No.

27. Trip Circuit healthy indication. 2 Nos.

28. Ground Bus size min. 25 x 6 mm. copper. 1 No.

29. Bell for Alarm 1 No.

30. Hooter for Alarm 1 No.

31. 3 Pin Socket with switch 1 No.


33. Auto Trip Lamp 1 No.

Item No. 2 :12kV/630A Amp. VCB Outgoing (Feeder Type for 11 kV line ) Switchgear panel1. 12KV/630A Circuit Breaker vacuum type 1 No. Draw out with

provisions of manual tripping by means of A control switch/push

button.

2. Motor Charged Spring operated closing 1 No. Mechanism or

magnetic actuator.

3. Numerical relay as detailed at prea RELAYs 1 No. Above with

communication facility and standard open protocol / Scada

compatibility alongwith IED for every feeder for purpose of Scada.

4. Single phase 12 kV current transformers 3 Nos. of ratio 200-

100/5-5A suitable for metering and protection. The class of

accuracy shall be 0.5 S for metering and 5P15 for protection.

Rated burden (output) shall be 10 VA for each secondary winding.

Instrument security factor for metering core shall not exceed 5.

5. Arrangement for reception of incoming and 2 Nos. outgoing cable

connection alongwith cable termination and sealing kits of

requisite size XLPE power cables.

6. Set of three phase air insulated main electrolytic 1 No. copper bus

bars of 630 A continuous current rating with PVC insulation or

sleeves. STC rating 16 KA for 3 seconds.

65


7. Mechanical ON/OFF indicator. 1 No.

8. Operating handle for independent manual 1 No. closing

mechanism.

9. Red indicating lamp/LED for ON indication. 1 No.

10. Green indicating lamp/LED for OFF indication. 1 No.

11. Auxiliary switch having minimum of 8 1 No. contacts 4 normally

open and 4 normally closed.

12. Flush mounting pattern 96x96 sq.mm. 1 No. Digital ammeter of

class 1.5 accuracy for 5 Amps. CT secondary scale 0-150/250 A.

13. Ammeter selector switch to indicate phase 1 No. current in all

three phases and with OFF position.

14. AC static HT Tri-vector meter 1 No.

15. Automatic door CFL with Switch. 1 No.

16. 240V, 80W AC single phase 1 Nos. anti condensation heaters

with thermostat (0-60 Deg. C) and switch.

17. Anti pumping contactor. 1 No.

18. Operation Counter. 1 No.

19. Loose Set of 3 phase Air insulated inter 1 No. connection

electrolytic copper bus bars, 630 Amps. rating with PVC insulation

with nuts and bolts supports etc. STC rating 16 KA for 3 seconds.

20. Test terminal blocks for metering and 2 Nos. relays, 3 phase 4

wire.

21. Fault trip yellow lamp/LED. 1 No.

22. Trip Circuit healthy indication. 2 Nos.

23. Ground Bus size min. 25 x 6 mm. copper. 1 No.

24. Bell for Alarm 1 No.

25. Hooter for Alarm 1 No.



28. Auto Trip Lamp 1 No.

13.2.11 All equipments shall be complete in all respect. All fittings, accessories or

apparatus which may not have been mentioned above but which are

usual/necessary for the equipments shall be included for each circuit breaker

panel.

13.2.12 TEMPERATURE RISE :

66


The maximum temperature rise of various parts of the circuit breakers when tested

under rated conditions shall not exceed the specified values at a peak ambient

temperature of 50 deg. c. The breakers may be provided with silver plated contacts if

necessary to meet the requirement of IS:13118 where higher temperature rise is

permitted with silver plating contacts. The quantity of silver facing shall be such that after

carrying out one tenth of the total number of operations specified for the mechanical

endurance test, there is still continuous layer of silver on the contacts. The temperature

rise of CTs and PTs shall also not exceed the permissible values as per relevant Indian

Standards when corrected for max. ambient temperature at site.

13.2.13 INSPECTION AND TESTING :

Each equipment shall comply with and shall be subjected to all routine and acceptance

tests prescribed in the relevant Indian Standard Specification/IEC.

13.2.14 TEST OF 11kV INDOOR CIRCUIT BREAKER :

i) ROUTINE / ACCEPTANCE TESTS:The following acceptance and routine tests shall be got conducted in presence of

purchaser's representative as per stipulation of the relevant standards, on each

unit.

a) One minute power frequency voltage withstand dry test on main circuit.

b) Voltage withstand test on control & auxiliary circuits.

c) Measurement of the resistance of main circuit.

d) Mechanical operating test.

e) Design and visual checks.

f) Any other tests not specified above but covered as per amendment/ latest

edition of relevant IS/IEC. The bidder must furnish type test reports

alongwith bid in respect of the equipment (of the type and design offered)

type tested in NABL approved test laboratory for which particular test the

lab has been accredited (for Indian Bidders). These type tests must not

have been conducted earlier than three years from the date of opening of

bid. The bidder may furnish type test report latest upto 45 days after

opening of tender.

13.2.15 The type test reports of Circuit Breakers, Current Transformers, Potential Transformers,

Relays etc. shall be complete in all respect along with oscillographic records, photographs etc.

in respect of all type tests as per relevant ISS/IEC. The type test certificates should be in

respect of specific make and type / rating of the Circuit Breakers/ instruments, transformers etc.

67


intended to be supplied and not in respect of the breakers etc. manufactured by their foreign

collaborators if any. Necessary data with test reports to show capability of circuit breaker to

withstand number of full level short circuit faults be also furnished. Complete literature must be

sent with the tender.

13.2.16 Routine & acceptance test as per relevant standard shall be carried out on each

equipment covered by this specification in the presence of purchaser's representative. If so

desired by the purchaser all test reports shall be submitted and got approved from the

purchaser before despatch of the equipment

13.2.17 TECHNICAL PARTICULARS :

The bidders shall furnish the guaranteed technical & other particulars of the equipments

offered in the Performa appended at G T Data Sheet--4. Tenders not accompanied with such

details are liable to be ignored. Make of various equipments should be clearly stated. Words like

reputed, equivalent etc. shall not be accepted. Alternative makes of equipments should not be

more than two in the order of preference.

13.2.18 INTER CHANGEABILITY :All similar materials and removable parts of similar equipments shall be inter changeable with

each other.

13.2.19 FAULT / TROUBLE ALARM SCHEME :The automatic trip of the Circuit Breaker due to operation of protection relays shall be indicated

by sounding of a hooter. All non-trip alarms shall be indicated by an alarm bell.

13.2.20 MAKE OF RELAYS :Following makes of relays are acceptable :

i) Alstom

ii) ABB

iii) Easun Reyrolle

iv) JVS

v) Siemens

13.2.21 MAKE AND TYPE OF BOUGHT OUT ITEMS :The following make of bought out items will be acceptable to department :----------------------------------------------------------------------------------------------------------------S.No. Name of Item Make----------------------------------------------------------------------------------------------------------------1. Indicating Instrument AE/IMP/MECO

(Analog type)2. Indicating Instrument AE/IMP/MECO

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(Digital type)3. Control Switch for Circuit ALSTOM/RECOM/SWITRON/

Breaker/Trip Transfer. KAYCEE4. Selector Switch for SWITRON/KAYCEE/RECOM

Voltmeter/Ammeter5. Semaphore Indicator ALSTOM/DAV IND./ER6. Indicating Lamp ALSTOM/TEKNIC/VAISHNO/DAV7. Enunciator MINILEC / YESHMUN / INSTALRAM /

PROTON / JVS/PRADEEP/ALAN8. Push Button TEKNIC/VAISHNO/ESSEN9. A.C. Hooter/Bell TARGET/INDUSTRIAL

HOOTER/ALAN/JVS10. D.C. Hooter TARGET/INDUSTRIAL

HOOTER/ALAN/JVS11. Heater SOFIA/ELTER/AIREX KAYCEE12. Link Type test terminal IMP/CAPITAL

block for testing of TVM13. CFL Tube PHILIPS/CROMPTON/BAJAJ14. 2 Pin/3 Pin socket with ISI MARK Switch (5/15A)

Other makes shall also acceptable if it is of "ISI MARK" or type tested for which bidders

shall furnish attested photostat copies of ISI Certificate/type test report not older than 5

years for the respective make offered along with tender.

13.2.22 Make / type of each relay, indicating instruments, integrating instruments, control

switches, selector switches, indicating lamps, semaphore indicators, enunciator scheme, bell,

hooter etc. shall be clearly and invariably indicated in the GTP (Guaranteed Technical

Particulars), bill of material and unit price list. Only specific make accessories shall be indicated.

The word "EQUIVALENT/REPUTED MAKE" will not be given for consideration.

13.2.23 BILL OF MATERIAL :The firm shall furnish the bill of material for VCB Kiosks separately.

13.2.24 MANDATORY SPARES :The bidders shall compulsorily quote for the following spares as mandatory spares. The item

wise prices for spares shall be indicated in relevant price schedule. These prices shall be

considered for Bid Evaluation :

A) FOR INCOMING SWITCH GEAR PANEL :i) Current Transformers : 3 Nos.

ii) Three Phase Potential Transformers : 1 No.

iii) Numerical Relay ( as per S.no.3 of Cl.3.18

Schedule of Requirement : 1 No.

iv) Closing Coil : 12 Nos.

v) Tripping coil : 12 Nos.

vi) Audio Alarm (with full detail) : 1 No.

vii) Vacuum Interrupter : 3 No.

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viii) Spring Charging Motor/Magnetic Actuator : 1 No.

ix) Terminal connectors : 6 Nos.

B) FOR OUTGOING PANEL (FEEDER TYPE) :i) Current Transformers : 3 Nos.

ii) Numerical Relay ( as per S.no.3 of Cl.3.18

Schedule of Requirement : 1 No.

iii) Closing Coil : 12 Nos.

iv) Tripping coil : 12 Nos.

v) Audio Alarm (with full detail) : 1 No.

vi) Vacuum Interrupter : 3 No.

vii) Spring Charging Motor/Magnetic Actuator : 1 No.

viii) Terminal connectors : 6 Nos.

NOTE : Two Sets of above spares for Incoming Type Panels and one Set of spares for

Outgoing Panels (Feeder Type) are required.

13.2.25 OPTIONAL SPARES :In addition to above, the bidder shall also furnish list of recommended optional spares that will

be required for Breakers along with their total and unit prices. However, the prices of optional

spares will not be considered for bid evaluation.

13.2.26 Alternative to above: Outdoor 11kV GSS arrangement with Outdoor bay:Alternative to above Indoor Feeder panels, bidder can offer design of Outdoor

11kV GSS arrangement with Outdoor bays (4 nos ) one each for 630kVA

transformer, and outdoor feeder and Bus coupler having Main and transfer Bus.

Each bay shall consist of outdoor VCB, CT, Isolators with earth switch, LAs etc

and PTs .Main and transfer bus may be overhead strung Bus of Panther

conductors or may be Tubular bus bars .The short circuit rating of outdoor CTs

etc shall be 25 kA against 16 kA for three seconds otherwise all details be

similar. In this case CT –PT metering arrangement shall be at the termination of

outgoing feeder BAY.

13.2.27 Technical Specification of 11 kV CTPT Metering SetsA. Scope:

Please refer clause Metering. ABT Compliant Three phase four wire 11 KV /

110V oil cooled outdoor type combined CTPT units for feeder metering purpose

having accuracy class 0.5 burden 30 VA/ phase at 0.8 PF (lag) for PT and for CT

class 0.5S burden 10 VA at 0.8 PF (lag), 3 Nos. of single phase potential

transformers for 11 KV CTPT Sets and 3 Nos. single phase paper impregnated

oil emersed current transformers for different phases in common tank equipped

70


with weather proof bushing for outdoor use shall be provided. The Bidder shall

furnish Guaranteed Technical Particulars as per Sheet-5.B. Applicable Standards:

Unless otherwise modified in this specification, 11 KV CTPT Metering Sets shall

comply with the following Indian Standard Specification (latest verson):

IS:2705-1992 Specification for current transformers.

IS:3156-1992 Specification for voltage transformers.

IS:5621-1980

IS:2099-1986 and Specification for insulators/ bushing

IS:3347-1986

IS:335-1983 Specification for new insulating oil

C. 11 KV CT-PT Metering Sets:i) 11 KV Single Phase Current Transformer (3 Nos. for different phases).

The 11 KV current Transformer shall be paper impregnate oil emersed

type, single phase 50 HZ confirming to IS:2705/1992 with latest

amendment in all respect except where modified in this specification. The

11 KV current Transformers shall have the following technical

characteristics’/ parameters.

Sr.No. Particulars 11 KV

i) Normal system voltage (kV rms) 11

ii) Highest system voltage (kV rms) 12

iii) Frequency 50 Hz

iv) Impulse withstand voltage (kVp) (on assembled CTPT set)

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v)

a) One minute power frequency dry withstand voltage

(on assembled CT-PT set) primary (kV r.m.s.)

secondary (kV r.m.s.)

b) One minute frequency wet withstand voltage (kV

Peak) (On assembled CT-PT set) 28 3 Root 2x28

Rms

vi) Transformation ratio (CT Ratio) 200/5 A or as per

requirement

vii) Rated output (VA burden) 10 VA

Viii) Class of accuracy 0.5 S

ix) Rated continuous thermal current 1.2 times of rated

primary current.

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x) Short time thermal current rating for 1 second. 25 kA for

200/5 A Current density corresponding to Short Time

Thermal Current should not exceed 160A /mm sq.

xi) Rated dynamic current 2.5 times of short time thermal

current rating.

xii) Number of cores One

Xiii) Instrument security factor Not exceeding 5

Xiii) Max. ratio error As per IS:2/05/1992

xiv) Max. phase angle error -doxv) Max. temp. rise over max.

ambient temp. of 50 deg.C at rated continuous thermal

current at rated frequency and with rated burden.

-do-

D. 11 KV Voltage Transformers:11 KV voltage Transformers will be used alongwith CTs of description stated

above. Those shall be paper impregnate oil immersed type conforming in all

respect to the Indian Standards specification IS: 3156/1992 with latest

amendment except where modified in this specification. The 11 KV voltage

transformer shall have the following ratings/ technical parameters:

Sr.No. Particulars 11 KV

----------------------------------------------------------------------------------------------

i) Nominal system voltage (kV rms) 11

Ii) Highest system voltage (kV rms) 12

Iii) Nos. of phases Three

Iv) Impulse withstand voltage (kVP) (on assembled CTPT set) 75

v)

a) One minute power frequency dry withstand voltage (on assembled

CT-PT set) primary (kV r.m.s.) Dry secondary (kV r.m.s.)

b) One minute frequency wet withstand voltage (KV Peak) (On

assembled CT-PT set) 28 3 Root 2x28 rms

vi) Frequency 50 Hz

vii) Transformation ratio (PT Ratio) 11 kV/ 110V

viii) Rated output (VA burden) 30 VA per phase

ix) Class of accuracy 0.5 (As per IS:3156/1992)

x) Winding connection Star/ Star

xi) Rated voltage factor and time 1.2 continuous & 1.5 for 30 seconds.

xii) Temp.rise over max. ambient temp. Within limits of IS:3156/1992

xiii) Phase angle error max. -doxiv) Max. Phase angle error -doxv) Ratio error

(Max.)

-do-

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E. General Technical Description of 11 kV CT-PT Metering Sets:i) The CT PT Metering set shall comply to the latest standards mentioned in

the specification and guaranteed technical particulars.

ii) High voltage winding of 11 kV instrument transformers shall have proper

insulation impregnated with oil under vacuum. The paper used for

insulation shall be of high insulation grade. The process of impregnation

shall be detailed out in the tender.

iii) The core material of CT-PT sets shall be of high grade, non-ageing,

electrical silicon steel having low hysteresis loss and high para-materiality

to ensure accuracy at both normal and over current/ voltage.

iv) The instrument transformers shall be contained in a fully weather proof,

outdoor type, platform mounting and also suitable for pole mounting type

tank with 6 Nos. of 12 kV class (for 11 kV CT-PT set) weather proof

bushing for incoming and outgoing connections.

v) The thickness of MS sheet used for fabrication of tank shall not be less

than 3.00 mm for sides and 5 mm for top cover and bottom.

vi) The 11 kV CT-PT set should have compact construction and the overall

dimensions of complete unit shall be indicated in the tender.

vii) The external surfaces of tanks of CT-PT sets shall be painted with one

coat of primer and two coats of synthetic enamel paint of shade No.631 of

IS:5. The internal surfaces of the tank shall be painted with two coats of

suitable heat resistant oil insoluble paint.

viii) The metering sets shall be supplied with first filling of insulating oil

conforming to IS:335 (including latest amendment).

ix) The bushings used in the CT-PT sets shall confirm to IS:2099, IS:5621

and IS:3347 (latest amendments). These shall be suitable for operation in

normally polluted atmosphere.

x) The minimum clearance between phases and phase to earth as specified

in the relevant ISS should be maintained.

xi) H.V. metal parts (primary terminals) shall be of 20 mm dia brass. The

H.V. connectors should be for 400 Amp. Rated current.

xii) The paper impregnated oil immersed type instrument transformers shall

be complete with all fittings and accessories mentioned at Clause No.

3.06 of this specification.

xiii) The 11 KV CT-PT sets shall be hermetically sealed type (should not

communicate with atmospheric air) in construction without any oil

conservator. The quality and work-man-ship shall be of high standard.

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xiv) For load shading single phasing is adopted in the 11 kV system. The

offered 11 kV CT-PT set shall be suitable for working under such

abnormal operation condition.

xv) CT-PT sets shall be used for 3 phase 4 wire kWh metering. As such 11

kV CT PT sets shall have 3 Nos. CTs.

xvi) The 11 kV CT PT sets shall three nos. of single phase PTs. The primary

winding of 3 single phase PT shall be connected in star formation in the

tank with common neutral of 11 KV brought outside the tank through 3 KV

bushing for earthing.

xvii) The neutral of PT primary and secondary winding shall be earthed.

xviii) The primary winding neutral and secondary winding neutral of PT and

secondary terminals of CTs and PTs shall be brought out in one single

secondary terminal box through 3 KV bushings. The terminals shall be

marked as per ISS and supporting marking plate with earth terminal shall

be provided. The secondary terminal box compartment shall be divided in

two portions- One portion containing neutral of primary winding of PT and

its separate earthing terminal and second compartment accommodating

secondary neutral and PT terminals complete with one earth terminal (for

earthing of secondary neutral terminal wherever required) and all 6 Nos.

CT secondary neutral terminal wherever required) and all 6 Nos. CT

secondary terminals of 3 CTs. The whole compartment shall be covered

by one bolted cover with sealing arrangement. At least two bolts at

diagonally opposite corners of secondary terminal box shall have sealing

bolt. All other bolted covers, where provided shall also have sealing bolts

for sealing purpose. Suitably shorting links shall be provided for individual

CT shorting and earthing PT secondary neutral.

xix) The secondary terminal box shall have cable gland/ flange suitable to

receive two Nos. control cable of size 6x4 sq.mm and 4x2.5 sq.mm at the

bottom of the secondary box for metering connections to secondary

winding of 11 kV CT-PT circuits respectively.

xx) The 11 kV CT PT Set shall have 3 Nos. incoming and 3 Nos. outgoing

outdoor type bushing complete with 6 Nos. bimetallic terminal connectors

suitable for Dog Conductor.

F. Fitting And Accessories:The outdoor platform/ pole mounting type metering equipments shall be complete

with tank, fittings, accessories as detailed below:

1 No. Electrically welded sheet steel tank/ enclosure for accommodating

above instrument transformers with suitable bolted cover.

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6 Nos. Outdoor single terminal porcelain bushing of reputed make without

arching horns. 3 Nos. for incoming and 3 Nos. for outgoing.

1 No. Secondary terminal box. The terminal box opening door/cover shall

have suitable sealing arrangement. The necessary gland/ socket shall be

in the scope of supply.

1 No. Oil filling hole with cap/plug.

1 No. Plain oil—level guage/ indicator with min. oil level marking.

1 No. Filtration plug with pipe welded to plug and extended up to 25 mm

above the bottom of the tank is to be provided for the purpose of oil

filtration.

2 No. Lifting lugs for lifting the complete CT-PT unit.

2 Nos. Earthing terminals.

1 Set Under base channels with suitable fixing holes for mounting on plat-

form/poles.

1 Set Detachable coller assembly.

1 No. Rating and diagram plate.

6 Nos. Bimetallic Terminal Connectors.

G. Bushing:The bushing shall confirm to IS:5621-1980 and IS:2099-1986 and its subsequent

amendment, if any, the bushing shall be of standard make. The make and

catelogue No. of bushing shall be clearly stated in the guaranteed technical

particulars. The type tests certificates of bushings not older than three years shall

also be furnished alongwith tenders. The bushing rods and nuts shall be made of

Brass. The dimensions of 12 kV class bushings and their related parts for 11 kV

CT-PT sets shall conform to the relevant Indian Standards as detailed below:

Voltage class Indian Standard 12 kV bushing For porcelain parts IS:3347 (Part-

III) Sec.I- 1972 or the latest version thereof

For metal parts IS:3347 (Part- III) Sec.II-1967).

The minimum electrical clearance of 255 mm for 11 KV CTPT sets between

phases shall be obtained with the bushings mounted and phase to earth

clearance should be maintained as specified in relevant IS/ Indian Electricity

rules.

The minimum electrical clearance for 11 kV CTPT sets between phases and

phase to earth should be maintained as specified in relevant IS/ Indian Electricity

rules.

13.2.28 Guaranteed Technical Particulars, Drawings And Quality Assurance Plan:(i) Guaranteed Technical Particulars in the Technical Particulars Data

Sheet- with this specification shall be furnished alongwith the detailed

general arrangement dimensional drawings mounting arrangements,

75


connection diagrams and quality assurance plan etc. with the tender.

Particulars which are subject to guarantee shall be clearly marked in

GTP.

10.3.1 Routine tests as per relevant standard alongwith accuracy test of CT as per IS:2705 (Pt-

II)- 1992 and that of PT IS:3156 (Pt.II)-1992 shall be carried out on each equipment covered by

this specification in the presence of purchaser’s representativeif. All test reports shall be

submitted and got approved from the purchaser before despatch of the equipment.

10.3.2 The supplier shall simulate single phase condition in their laboratory for testing one 11

KV CT-PT set of any ratio from each lot offered for inspection under such condition for 24 hours.

The errors of PT shall be measured before and after application of single phasing condition for

at least 24 hours and results shall be within permissible limits of specified accuracy class. This

test shall be done as acceptance test.

10.3.3 One CT-PT set of each rating in each offered lot should be subjected to temperature rise

test at 1.2 lb and also ISF test, at firm’s works free of cost. 10.3.4 During routine/ acceptance

test, errors for CTs shall be conducted at 5%, 20%, 100% and 120% of rated current and in

case of PT at 80%, 100% and 120% of rated voltage.

10.3.5 Algebric summation of errors of standard CTs/PTs to the errors observed on CTs/PTs

under test should be made to get final errors on specified percentage current/ voltage/ burden. If

class of accuracy of standard CT-PT is less than 10 times of the accuracy of CT-PT set under

test. Further, it shall be ensured that all meters and instruments used during inspection/ testing

are calibrated from NABL approved test house and date of calibration should not be older than

one year at the date of presenting the same to the inspecting officer.

13.3 Name Plate And Marking:a) The equipment hall have a non detachable type name plate which should be

clearly visible and effectively secured against removal having markings as per

requirement of IS. In addition , serial No., ratio and date of despatch shall have to

be engraved on bushing side of tank with letters of suitable depth and 25 mm

height filled with red colour.

b) The main and load are to be stencilled on top cover on main and load side

respectively.

c) A sticker reading as under must be provided in the HV neutral compartment of

secondary box.

CAUTION: “DO NOT REMOVE EARTH LINK WHEN HV TERMINAL IS LIVE” .

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13.4 Specification of Lighting in Solar Power Plant13.4.1 Scope

This specification covers design of Array yard and sub-station, 40 no. street lights using

40W LED lights, tubular poles(from main gate upto the control room/switchyard gate)

distribution pillar boxes, PVC cables, conduit steel trays etc. which shall be supplied by

the contractor for installation of luminaries, their control gear and wiring on them at an

height of 3.5 - 5 meters above gravel level .The bidder will also design , supply and

install lighting fixtures and accessories based on LED/ CFL Tubes energy saving

concept technology required for control room building and entry points/ gates. The

Bidder shall furnish Guaranteed Technical Particulars as per Sheet-6.

13.4.2 General Technical Requirements:

The lighting system for outdoor and indoor areas of Solar Power Plant shall be designed

in such a way that uniform illumination is achieved. In outdoor yard only equipment /bus

bar areas are to be illuminated and luminaries shall be aimed as far as possible towards

transformers and circuit breakers.

13.4.3 Lighting Levels(i) The average LUX level of 10 is to be maintained in switchyard. However, a lux

level of 20(10+10) additional switch able on requirement only) is to be maintained

in switchyard on transformer.

(ii) Lighting in other areas such as control room , office rooms and battery room &

other areas(i.e street light)shall be such that the average LUX level to be

maintained shall be as under :

--------------------------------------------------------

S.No Area LUX

--------------------------------------------------------

1. Control Room 300

2. Office 150

3 Other areas 8

-------------------------------------------------------

13.4.4 Emergency Light Points :

Light points using CFL of 18 W (at 240 V) shall also be provided as given below :

1. Control room 4 Nos.

77


2. Battery room 1 No.

3. Office 2 No.

4. Corridor/Front Porch 1 No. each

. Separate wiring and distribution board shall be provided from these lights.

The lighting level shall take into account appropriate light output ratio of luminaires, coefficient of

utilization maintenance factor (of 0.7 or less) to take into account deterioration with time and

dust deposition.

13.4.5 TWO NOS. 150 W LED light fitting shall meet the following parameters

PARAMETER SPECIFIED VALUE

Input voltage 170-260 V without SMPS

Input Frequency 50 HZ +/-1 HZ

Power Factor 0.95 (Minimum)

Power Efficiency >96%

LED efficiency 100 lumens per watt

Dispersion Angle Minimum 120°

Usage hours Dusk to dawn

Total Harmonic Distortion < 15 %

Working Temperature -5° to +50° C

Working Humidity 10% - 90% RH (Preferably Hermetically sealed unit.)

Index of Protection Level Minimum IP 65

Lamp Casing Powder coated metal.

Life > 50000 Hrs.

Output Luminous flux > 24 lux and > 40% uniformity

LED Type High Power CREE/ORSAM/EDISON/SEOUL semi conductor of 5 mm high bright

LED whichever generate minimum heat

LED Output 110 Lumens per watt

Colour Temperature 2800° K/3000o K

Colour Rendering >75

Junction Temperature < 60° C

Energy Consumption Watt/ Lamp < 1.2 W Per LED (Preference shall be given to minimum

Watts per LED

Electrical Connector

Lead wire with 2 meter long –or as required by the customer at site.

Expected Life of components Passive electronics components life greater than >100,000

hours

78


Woking of LEDs Preferably Direct AC, without conversion to DC

Environment considerations Environment friendly and 100% green

Preferably without PCB - minimum pollution during the - manufacture/ disposal

Moisture protection in case of casing damage

IP 65 (preferably Totally encapsulated)

10.5.7 Luminaire Compliances:

a) Luminaire Specification:

Control gear specification:

EN 61347-2-13: Particular requirements for d.c. or a.c. supplied electronic control

gear for LED modules EN 62384: D.C. or A.C. supplied electronic control gear for

LED modules.

b) Luminaire EMC specification:

EN 61000-3-2: Electromagnetic compatibility (EMC). Limits for harmonic current

emissions (Equipment input current < 16 A per phase) EN 61000-3-3: Limitation

of voltage fluctuation and flicker in low voltage supply systems for equipment with

rated current < = 16 A

Additional information:1. The LED luminaire housing, heat sink, pole mounting bracket, individual LED

reflectors and front heat resistant tempered glass should be provided.

2. The LED luminaire housing should be made of non corrosive high pressure die

cast aluminium and the housing should be power coated grey, so as to ensure

good wetherability.

3. Each individual LED source should be provided with a asymmetrical distribution

high reflectance aluminized reflector, which should ensure that the light

distributionof the luminaire is suitable for road lighting applications (wide beam

distribution) and should ensure high pole to pole spacing.

4. The luminaire should be provided with in built power unit and electronic driver.

The luminaire should be should be so constructed to ensure that the gear and

LED modules are replaceable, if required.

5. The luminaire should be suitable for both standard street light poles with a typical

pole diameter of 50 mm – 60 mm and should be suitable for both side entry and

bottom entry (post top)

13.5 Erection, Testing & Commissioninga. The installation shall be carried out by an electrical contractor holding a valid

license as required by the State Government Authorities.

b. The contractor shall provide necessary drawings and documents required by

statutory authorities and obtain the approval before taking up erection. It shall be

79


the sole responsibility of the contractor in obtaining safety certificate / approval

from local statutory authorities.

c. Any modification in the equipment or installation that may be demanded by the

inspecting authorities shall be carried out by the contractor at no additional cost

to the PEDA.

d. In accordance with the specific installation instruction as per the manufacturers

drawings or as directed by the PEDA, the successful Bidder shall unload,

assemble, erect, install test, commission and hand over all electrical equipments

included in this contract.

e. Erection materials including all consumables, tools, testing instruments or any

other equipment required for successful commissioning shall be arranged by the

successful Bidder in a timely manner.

f. Clearing the site after completion, of erection as well as regular clearance of

unwanted materials from site, returning excess materials supplied by the PEDA

back to PEDA's stores shall also be included under this scope of work.

g. All equipment and instruments, indoor and outdoor, shall be marked with No. and

provided with danger boards before commissioning.

h. The contractor shall touch up the surface with paint of same shade for

equipments, which are scratched and / or damaged during transportation and

erection before commissioning.

i. The contractor shall employ skilled and semi-skilled labourers for erection,

testing and commissioning as required. All the electricians, cable jointers,

wiremen, welders and others employed shall posses valid certificates / license

recognised by competent authorities.

j. The contractor shall set up his own facilities at site at allocated place to

undertake fabrication jobs threading etc.

k. The Contractor shall carry out major civil engineering works as called for in scope

of work pertaining to electrical equipment's like foundation, plate inserts etc. as

per the latest relevant drawings as sell as carry out minor civil works such as, but

no limited to, the grouting of base plates, channels, supports and foundation

bolts, cutting holes in walls and ceiling, chipping of floor and ceiling and making

good the same after installation of the equipment and any other minor civil works

advised by PEDA for completion of the work has to be carried out without any

extra charges.

l. Power transformers, 11kV VCB kiosk etc. shall be handled and erected as per

the relevant codes of practice and manufacturer's drawings and instruction

manuals.

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m. For power transformer, drying out and oil filling as required, after checking and

testing the contractor shall carry out the dielectric strength. If required, the

contractor shall carry out oil filtration before commissioning at no extra cost.

n. During erection, care is to be taken to see that painting does not peel off at any

place and if so, it has to be given a 'Touch-up' after erection by the contract.

13.6 Outgoing feeder cable and 11kV overhead line systemInstallation of outgoing feeder cable and 11kV overhead line system involving single

pole/ double pole,/ three pole structures with cross-arm supports for AB switch, DO fuse

etc., shall be as per relevant IS / CBIP / REC practices / Discom practice and is in the

scope of supply against this bid. Electrical clearances shall be maintained as per IE rules

/ DISCOM practice. General arrangement Drawing indicating Pole mounting structure,

cable termination (cable from outgoing feeder panel), mounting of DO switch, 9kV

LAs ,termination for over head Discom line along with Earthing etc shall be furnished

with tender. Installation of 11 kV overhead transmission line systems is in the scope of

PSPCL/PEDA from the Pole mounting structure termination point of the SPV Power

plant to the nearest 66KV Sub-station.

Earthinga) Earthing system installation shall be in strict accordance with the latest

editions of Indian Electricity Rules, relevant Indian Standards and code of

practices and the local statutory authority regulations.

b) Neutral points of system metallic enclosures and frame works, not

forming part of electric supply shall be connected to main earthing

system.

c) Earthing Layout:The contractor shall submit to PEDA earthing drawings showing the

location of earthing conductors, for their approval. Earthing conductors in

outdoor areas shall be buried 600 mm below finished graded level and

these buried conductors shall be brought 500 mm above ground level for

making tap connections to the equipments.

d) Transformer Earthing:Two separate earth electrodes shall be provided for transformer neutral

and one earth electrode for transformer body earthing. Apart from body

earthing control cubicle and radiator shall also be properly earthed. All the

electrodes shall be 38mm dia GI pipe, 2.5 m long and shall strictly be as

per IS : 3043 of latest revision.

e) Structure Earthing: Each phase of 9 kV LA shall be earthed to an individual earth

electrode through 50 x 6 mm GI flat.

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Air break switches and DO fuses shall also be earthed through

50x6 mm GI flat to the main earthing flat.

Metallic conduits and pipes shall not be used as earth continuity

conductor. 8 SWG GI conductors shall be provided for earthing

lighting fixtures. Receptacles, junction boxes, lighting conduits and

this conductor in turn shall be connected to the main earthing

conductor / electrode.

13.7 Specification For Testing & CommissioningThe testing and commissioning for all electrical equipment at site shall be

according to the procedures listed below:

a) All electrical equipment shall be tested, installed and commissioned in

accordance with the latest relevant standards and code of practices published by

Indian Standards Institution wherever applicable and stipulations made in

relevant general specifications.

b) The testing of all electrical equipment as well as the system as a whole shall be

carried out to ensure that the equipment and its components are in satisfactory

condition and will successfully perform its functional operations. The inspection of

the equipment shall be carried out to ensure that all materials, workmanship and

installations conform to the accepted design, engineering and construction

standards, as well as accepted code of practices and stipulations made in the

relevant general specifications.

c) The contractor in the presence of PEDA shall carry out all tests/ Consultant using

his own calibrated instruments, testing equipment as well as qualified testing

personnel.

d) The results of all tests shall conform to the specification requirements as well as

any specific performance data, guaranteed during finalisation of the contract.

13.8 Preparation of the Equipment for Commissioning;a) After completion of the installation at site and for the preparation of plant

commissioning, the contractor shall check all the equipment and installation in

accordance with the agreed standards, latest relevant code of practices of Indian

Standards and specific instructions furnished by the particular equipment

suppliers as well as purchaser.

b) Checking required to be made on all equipment and installations at site shall

comprise, but not limited to, the following:

Physical inspection for removal of any foreign bodies, external defects,

such as damaged insulators, loose connecting bolts, loose foundation

bolts etc.

Check for grease, insulating / lubricating oil leakage and its proper

quantity.

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Check for the free movement of mechanism for the circuit – breaker,

rotating parts of the rotating machines and devices.

Check for tightness of all cable joints and busbar termination ends as well

as earth connections in the main earthing network.

Check for clearance of live bus bars and connectors from the metal

enclosure.

Check for proper alignment of all draw out device like draw out type circuit

breaker etc.

Continuity checks in case of power and control cables.

Checking of all mechanical and electrical interlocks including tripping of

breakers using manual operation of relay.

Checking of alarm and annunciation circuits by manual actuation of

relevant relays like Buchhloz relay in case of transformer.

Check and calibrate devices requiring field adjustment/calibration like

adjustment of relay setting etc.

Check for proper connection to earth network of all non-current carrying

parts of the equipment and installation.

xv) The relevant tests shall be carried out in accordance with relevant IS

of latest issue. The tests which are to be carried out on the equipment

shall include, but not be limited to, the following:

i) Check for completeness of installation.

ii) Each pole to earth insulation resistance test.

a) Air Break Switch/DO Switchi) Check for completeness of installation.

ii) Insulation resistance test

a) Pole to earth

b) Control cables

c) Manual operation checks.

b) Cablesi) Insulation resistance test with 2,500 V meager for

high voltage power cables rates above 1.1kV grade

and 1,000V meager for cables rated up to 1.1kV

grade.

ii) All 1.1 kV cables shall be subjected to high voltage

test after joining and terminating but before

commissioning as per relevant standards.

iii) In each test, the metallic sheath / screen / armour

should be connected to earth.

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iv) Continuity of all the cores, correctness of all

connections as per wiring diagram, correctness of

polarity and phasing of power cables and proper

earth connection of cable glands, cable boxes,

armour and metallic sheath, shall be checked.

c) Earthing Systemi) Tests to ensure continuity of all earth connections.

ii) Tests to obtain earth resistance of the complete

network by using earth tester. The test values

obtained shall be within the limits.

13.9 Lightning & Over Voltage Protection13.9.1 The SPV Power Plant should be provided with Lightning and over voltage

protection connected to proper earth mats. The main aim of over voltage

protection is to reduce the over voltage to a tolerable level before it reaches the

PV or other sub-system components. The source of over voltage can be lightning

or other atmospheric disturbance.

13.9.2 The lightning Masts /Conductors shall be made as per applicable Indian

Standard / International Standard in order to protect the entire Array Yard/Shed

from Lightning stroke. Necessary concrete foundation for holding the lightning

conductor, in position, to be made after giving due consideration to maximum

wind speed and maintenance requirement at site in future.

13.9.3 The lightning masts / conductor shall be earthed through flats and connected to

the Earth mats as per applicable Indian Standards with earth pits. Each Lightning

Conductor shall be fitted with individual earth pit as per required Standards

including accessories, and providing masonry enclosure with cast iron cover

plate having locking arrangement, watering pipe using charcoal or coke and salt

as per required provisions of IS.

13.9.4 The bidder shall ensure adequate lightning protection to provide and acceptable

degree of protection as per IS for the array yard/Shed. If necessary more

numbers of Lightning conductors may be provided. Design calculations and

detailed explanations (in 4 sets) shall be provided for approval of PEDA within 15

days of order.

13.9.5 Lightning- Conductor shall be as per requirements of IS Standards.

13.9.6 All building earth conductor shall be interconnected through the concept of “Earth

Mats” for interconnection with separate earth pits.

13.9.7 For each earth pit, necessary Test Point shall have to be provided.

13.10 Earthing System13.10.1 The earthing for LT side (Solar Power Plant side) array and LT power system

shall be as required as per provisions of Indian Standard/International Standard.

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Necessary provision shall be made for bolted isolating joints of each earthing pit

for periodic checking of earth resistance.

13.10.2 Each array structure of the SPV Yard/shed shall be grounded properly. The array

structure are to be connected to earth pits as per IS standards.

13.10.3 The earthing for the power plant equipment shall be made with as per provisions

of IS. Necessary provisions shall be made for bolted isolating joints of each

earthing pit for periodic checking of earth resistance.

13.10.4 The complete earthing system shall be mechanically & electrically connected to

provide independent return to earth. All three phase equipment shall have two

distinct earth connections.

13.10.5 An Earth Bus shall be provided inside the control room.

13.10.6 For each earth pit, necessary Test Point shall have to be provided.

13.10.7 In compliance to Rule 33 and 61 of Indian Electricity Rules, 1956 (as amended

up to date) all noncurrent carrying metal parts shall be earthed with two separate

and distinct earth continuity conductors to an efficient earth electrode.

13.10.8 Earth resistance of the earth pits shall be tested in presence of the representative

of Purchaser.13.11 Cables & Installation Accessories.13.11.1 11kV HT Cables:

11kV Grade, Al. Conductor XLPE cable shall be used between outgoing feeder

panel and overhead mounting structure for termination of line.. These cables

shall be laid on structural supports and using Galvanized Cable trays of adequate

strength. The cable shall be terminated using potheads of adequate size. The

cable should confirm to relevant ISS.

LT Cables:1.1kV Grade, Al. Conductor PVC Armoured Cables shall be used for all LT

Power Cables between Power & Motor Control Cubicles, MCC, Respective

feeders, etc. These cables shall be laid on structural supports and using

Galvanized Cable trays of adequate strength. The cable shall be terminated

using Al. Lugs of adequate cross section area. The PMCC’s and the MCC’s shall

be located in the Basement with cable entry on top.

13.11.2 Control Cables:1.1kV Grade, Cu. Conductor, PVC Armoured Cables shall be used for all control

cables required for the Solar Power Plant. These cables shall be laid on

structural supports and using Galvanized Cable trays of adequate strength. The

cable shall be terminated using Cu. Lugs of adequate cross section area.

a. Cu. Conductor, PVC Armoured with miller insulation between each pair

and tinned copper screening. All cables shall be PVC insulated with

appropriate grade conforming to IS.

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b. The wiring for module inters connection shall be with hard PVC conduit of

approved make. All Tees, Bends etc., shall be approved make. Before

procurement, approval for materials should be obtained from RSMML

c. Only terminal cable joints shall be accepted. No cable joints to join two

cable ends shall be accepted.

d. Cables inside the control room shall be laid in suitable Cable Trays of

approved type.

e. All wires used on the LT side shall conform to IS and should be of

appropriate voltage grade. Only copper conductor wires of reputed make

shall be used.

f. Cable terminations shall be made with suitable cable lugs & sockets etc.,

crimped properly and passed through brass compression type cable

glands at the entry and exit point of the cubicles. The panels’ bottoms

should be properly sealed to prevent entry of snakes/lizard etc. inside the

panel.

g. All cable/wires shall be marked with good quality letter and number

ferrules of proper sizes so that the cables can be identified easily. The

terminal end of cables and wires are to be fitted with good quality letter

and number ferrules of proper sizes so that the cables can be identified

easily.

13.12 Civil Works

13.12.1 Detailed Contour Survey & Soil Investigation of the SiteThe turnkey contractor shall be responsible for detailed soil investigation and

contour survey at required locations for the purposes of foundation design.

13.12.2 Land Development for site activitiesThe turnkey contractor is responsible for making the site ready by clearing of

bushes, felling of trees (if required), leveling of ground (wherever required) etc.

for commencing the project.

13.12.3 Switch yard civil worksSwitchyard civil work includes step up transformer plinth, HT Switchgear kiosk

plinth, two pole 4 pole structure foundation, earth pits, metal spreading curb wall

in and around switchyard and fencing. The transformer/ HT switchgear kiosk

plinth shall be made of brickwork or Random Rubble masonry conforming to

relevant standards. The height of transformer /HT Switchgear kiosk plinth shall

be decided based on 11 kV ground clearance. Earth pit construction shall be of

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brickwork covered with RCC (1:2:4) slabs, chain link fencing with pre-cast RCC

post double leaf gate will be provided.

13.12.4 BuildingsFor the operation & maintenance of Solar Photovoltaic Power Plant, office cum

store building and security house along with other buildings have been proposed.

The building shall be constructed with RCC framed structure with brick partition

walls. Bidder shall furnish the drawing showing the proposed buildings. The

construction of the same shall be as under) RCC Works All RCC works shall be

as per IS 456 and the materials used viz. Cement rein-forcement, steel etc. shall

be as per relevant standards.

b) Brick Works

Brick works in cement mortar (cm) 1:6 for 9" thick and 4½" thick wall

respectively. All brick works shall be using 1st class bricks of approved

quality as per IS 3102.

c) Doors & Windows :

Steel framed doors, Windows and ventilators shall conform to IS – 1081

with necessary glass panels including of all fixtures and painting etc

complete.

d) Plastering

Plastering in cement mortar 1:5, 1:6 and 1:3 shall be applied to all

internal, external walls and ceiling of slab respectively as per IS 1542.

e) Flooring

Flooring for stores shall be of cement flooring in concrete mix 1:2:4 using

10 mm aggregates as per IS 2571. Flooring for office building, security

house and erectors hostel shall be of vitrified tiles 8 mm. For toilet area,

the floor shall be of ceramic tiles 8 mm thicknesses. The wall tiles shall be

glazed tiles of 6 mm thickness and provided upto lintel level.

f) Roofing

The roof of the building shall be insulated and waterproofing shall be

done as per relevant IS.

g) Plinth Protection

Plinth protection 1000mm wide shall be provided around all the buildings.

h) White washing & colour washing.

White washing and colour washing work shall be conforming to IS 6278.

For distempering IS 427 shall be referred.

For synthetic enamel painting IS 428 shall be followed.

For cement painting IS 5410 shall be followed.

For painting of steel doors, Solarows and ventilators IS 2338, IS 1477

(Part I & II) shall be followed.

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i) Rolling Shutters.

Rolling shutters made of cold rolled strips shall conforming to IS 4030

with approved gauge thickness shall be provided with all fixtures,

accessories, painting all etc. complete.

j) Water supply.

GI pipes of Medium quality conforming to IS 1239 (Part I) and IS 1795 for

Mild Steel pipes shall be used for all water supply and plumbing works.

k) Plumbing and Sanitary:

Sanitary fittings, which include water closet (EWC/IWC), wash basins,

sink, urinal fitting including flushing tank, and necessary plumbing lines

shall be provided for office cum stores building and Security house and

erectors hostel.

l) Electrification of Building

Electrification of buildings shall be carried out as per IS 732 and other

relevant standards. The lighting design of the buildings shall be carried

out as per IS 3646. The building shall be provided with adequate quantity

of light fittings, 5A/ 15A 1 phase sockets, fans etc., controlled by required

ratings of MCBs and MCB DBs.

13.13 Water supplyA suitable arrangement of water shall be ensured to cater the day-to-day requirement of

drinking water and needs of Solar Photovoltaic during entire O&M period.

13.14 Roads within Solar Power PlantSuitable approach road and internal Solar Photovoltaic roads to carry safe and easy

transportation of equipment and material at the project site shall be made. The road

should provide easy approach to each location. These roads are to be designed

optimally to carry the crane load with all necessary chambers, gradients, super

elevation, and radius of curvatures for the easy movement of cranes, trucks and public

transport.

13.15 Peripheral Boundary Pillars:The contractor shall provide stone pillars of about 1.5 meter height at the distance of 25

meter intervals for the entire land area of Solar Power Plant. All documents/records

regarding test data, oscillographs and other measured values of important parameters

finalised after site adjustment shall be handed over to purchaser in the form of test

reports (in bound volume) for their future use and reference.

13.16 Painting & Finish:13.16.1 All metal surfaces shall be thoroughly cleaned of rust, scale, oil, grease,

dirt etc. Fabricated structures shall be pickled and then rinsed to remove

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any trace of acid. The under surface shall be made free from all

imperfections before undertaking the finishing coat.

13.16.2 After Phosphate treatment, two (2) coats of yellow zinc chromate primer

shall be applied followed by two (2) coats of epoxy based synthetic

enameled paint. Shade shall be Siemens Grey Ral- 7032. Thickness of

paint shall be not less than 75 micron.

13.16.3 All unpainted steel parts shall be cadmium plated or suitably treated to

prevent rust formation. If these parts are moving elements then they shall

be greased.

13.17 Inspection & Testing13.17.1 Purchaser shall have free access to Bidder’s manufacturer’s works to

inspect, expedite and witness shop tests. Any materials or work found to

be defective or which does not meet the requirements of the specification

will be rejected and shall be replaced at Bidder’s cost. Owner reserves

the right to carry out stage wise inspection of fabrication and components.

The Bidder shall furnish a detailed quality assurance plan for Purchaser review.

13.17.2 The test & inspection shall be carried out at manufacturer’s work and at

Plant site with the Bidders obligation. The test and Inspection shall be

done in accordance with the relevant standards and the Manufacturer's

standard before the delivery to site as well as after the erection and

commission at site. The bidders shall give the list of tests that they will

carry out at site to show the performance of plant.

13.17.3 A detailed 'QAP' for Manufacturing and Inspection shall be submitted by

the Bidder for Owner's approval. The data of each test and inspection

shall be recorded and submitted as soon as the test/ trials are conducted

and will also be a part of final documentation.

13.17.4 The shop test shall be carried out to prove the performance parameters of

the offered model. The testing shall be done in the presence of the

representatives of the department.

13.17.5 The department shall be sending its 2 representatives for inspection of

stage manufacturing and testing at works & 7 days training at

manufactures works of SPV module and PCU manufacturer. Expenses

on account of to & fro journey by Air (in economy class fare), stay in good

hotel/guest house of manufacturer works, lodging during stay shall be to

the bidders’ account. The notice of such inspection shall be given 30 days

in advance in case of countries outside India and 15 days in India.

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13.17.6 Manufacturer has to submit procedure for Test carried out at their

Factory.

Start Up Trials

Load Test

Records & Measurements

Safety Device List

Setting values for all sensors for Pressure and Temperature

Dimensional Check-up, Overall Inspection, Completeness of

Scope of Supply

Shop Test/Load Test for Solar Power Plant

13.18 Load Trials & Reliability test at Site for Grid Connect Solar Power Plant13.18.1 Performance Guarantee Test at Site for Grid Connect Solar Power Plant,

HT Panel etc. These tests will be conducted at site as per site conditions

at available load and after performing all pre-commissioning check and

trials and after readiness of the entire Solar Power Plant system which

are required to carry out the load trials.

13.18.2 All the tests which are mentioned in the load test of Solar Power Plant will

be carried out in presence of Purchaser Representative at Plant site at

site conditions and the parameters checked in accordance with the data

sheet and guaranteed parameters given by the Contractor.

13.18.3 All the equipments supplied by the vendor will be tested as per relevant

standard/ Quality assurance plan at site conditions and the performance

monitored.

13.19 Quality Issues

13.19.1 Contractor will submit and get finalized detailed comprehensive Standard

Field Quality Plan (SFQP) within 30 days from date of issue of the order

for bought out items and items manufactured by them. The Standard

Field Quality Plan shall relate to the specific and objective erection

practices right from storage of equipment till final inspection and testing to

be followed for bought out items and items manufactured by Contractor.

Accordingly, the Manufacturing Quality Plan shall be submitted broadly

under following sub-heads:-

i) Raw material/Bought Out items and Components.

ii) In process inspection and test/checks to establish successful

completion/accomplishment of the process.

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iii) Final tests/checks in accordance with relevant national/

international standards/specification.

13.19.2 The quantum of check for each and every inspection/test items shall be

based on an established sampling method and the quantum of check

indicated in the SFQp should be designed adequate quality protection.

13.19.3 In case reference documents/acceptance norms are indicated as per

plant standards then the same shall be duly substantiated/properly

explained by well established and proven engineering practices. All

submissions will be in English language only.

13.19.4 Bidder will to allow Purchaser to carry out Quality/Audit/Quality

surveillance on bidders and our sub vendor’s work with reference to

contractual obligations to ensure that the quality management

practices/norms as detailed out in the Quality Manual are adhered to. To

facilitate this activity, you shall keep Purchaser informed all progress of

work in this contract on monthly basis.

13.19.5 Contractor will associate/fully witness in each inspection being carried out

at their/their sub-vendor’s works by our authorized inspection engineer(s).

13.19.6 Purchaser shall also carry out quality audit and quality surveillance of

your systems, procedures and quality control activities. However, this

shall not relive you of any of your contractual responsibilities under the

contract.

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SHEET-1

Guaranteed Technical Particular data Sheet for Solar PV Module

S. No. Particulars Unit Type/value1. PV Module Manufacture name & Country2. PV Module type (Crystalline- Mono/Multi)3. Product Code4. Product Status Standard5. No. of PV cells per Module6. Mounting arrangement for Solar Module7. Solar Module frame material8. Module dimensions9. Output Cables (viz., Polarized Weather Proof DC rated multi-contact connector)10. Weather resistant HDPE Junction Box (IP65)11. Construction front back12. Temperature rise of solar cells under severe working conditions over Max. Ambient Temp.13. Nominal voltage14. Nominal Wattage15. Power Tolerance (3%)17. Peak power voltage (Vmp)18. Peak power current (Imp)19. Open circuit voltage (Voc)20. Short circuit current (Isc)21. Weight of each module (Kg)22. Fill Factor23. Standards/Approvals from International Agencies IEC 61215/IEC 61730 TUV24. Module is suitable to operate at 500 ambient Yes/No25 Cell efficiency %26 Module efficiency %

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SHEET-2

Technical Particular Data Sheet for Power Conditioning Unit

AC Side Unit ValueNominal AC powerOutput AC voltageFrequencyTotal Harmonic DistortionAC over / under voltage over / under frequency protectionPhase shift (cos phi)

DC SidePV powerMaximum DC voltageMPPT voltage rangeMaximum DC currentDC over voltage protectionDC voltage rippleOthersMinimum Efficiency (CE)Ambient temperature rangeHumidity (non condensing)Quiescent powerDegree of protectionDimensions approx. (HXWXD)Weight

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SHEET -3

TECHNICAL PARTICULARS OF 415V/11kV STEP-UP TRANSFORMER(To be furnished by the bidder)

S. No. Description Guaranteed particulars to be filled in by the1. Service2. Type3. Rating kVA4. Rated frequency Hz5. Number of phase

HV sideLV sideNeutral (separate outside)

6. Rated Voltagea) HV winding kVb) LV winding kV

7. Vector group8. Type of cooling

(ONAN/ONAF)9. Insulation level

a) Power frequency withstand -kV rms. (HV/LV)b) Impulse withstand voltage –Kv (HV/LV)

10. Method of Earthing11. Duty12. Short circuit level13. Off circuit tap changer:

a) Range %b) In steps ofc) Tapping provided on HV side

14. Tap changer type15. Impedance voltage at 75oC

a) At principal tapping %16. Temperature rise above 50oC ambient

a) Top of oil by thermometer oCb) Winding by resistanceoC

17. Terminal detailsa) HV sideb) LV side

18. Losses (at 75oC and principal tapping)a) No load loss at rated voltage kW and frequencyb) Load loss at rated current kW (ONAN)c) Total loss at maximum rated power kW

19. Efficiency at 75oC and 0.9 PFa) At full load (ONAN) %b) At 75% load (ONAN) %c) At 50% load (ONAN) %

20. Hot spot temperature in winding limit to oC21. Shipping dimensions

a) Height mb) Breadth mc) Length m

22. Painting23. Reference Standards

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Sheet – 4

SCHEDULE OF GUARANTEED TECHNICAL PARTICULARS OF 12 KV INDOORSWITCHGEAR AND CONTROL PANEL

A) Circuit Breakers :1) Manufacturer's name and collaborator (if any).2) Type designation:3) Number of poles.4) Class5) Rated voltage.6) Rated insulation level.

i) Lightning impulse withstand voltage.ii) One minute power frequency withstand voltage.iii) One minute power frequency withstand voltage for auxiliary circuits.

7) Rated frequency.8) Rated normal current:9) Rated short circuit breaking current/ capacity.10) Rated short time withstand current and its duration.11) Rated transient recovery voltage for terminal faults.12) Rated short circuit making current.

13) Rated operating sequence (test duty cycle).14) First pole to clear factor.15)

a) Opening time.b) Closing time.

16) Total break time measured from the instant of trip circuit energisation :(a) At 10% breaking capacity(m sec)(b) At 100% breaking capacity(m sec)

17) Protection class of Breaker18) Constructional features :

i) Mass of complete Circuit Breaker with mechanism and Vacuum Bottle .ii) Mass of Vacuum Bottle.

19) Operating mechanism of circuit breaker and its associated equipment :i) Type of closing mechanism.ii) Whether the circuit breaker is trip free or fixed trip and whether it is with lockout

preventing closing.iii) Rated supply voltage of closing mechanism.iv) Current required at rated supply voltage to close the circuit breaker.v) Number and type of spare auxiliary switches/contacts.vi) Current required at rated supply voltage by other auxiliaries.

20) Other information :i)

a. Type of breaker (Drawout or fixed)b. Type of isolation (Vertical or horizontal)

ii) Type of arc control device.iii) Main Contact :

1. Type2. Material.3. Silver facing provided.4. Design contact pressure.

iv) Life :i) Mechanical operations.ii) Electrical operations.iii) Short circuit operations.v) Maxm. temperature rise over an ambient temp. of 50 Deg.C.vi) Transient behavior details :

a) PF recovery voltage between phases.b) Peak transient recovery voltage.c) Rate of rise of recovery voltage.

vii ) Rated Current of Terminal Connectors.viii) Details of interlocks provided.ix) Derating factor for specified 50 Deg.C ambient temp. & site condition if

any.

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x) Max. chopping current.xi) Vacuum interrupter details.

a) Make & Code No. of vacuum bottle.b) Pressure inside interrupter.c) Manufacturer's code number/Reference standard.

xii) Contact wear indication.21) Thickness of sheet steel22) Whether CRCA Sheet used The manufacture should give the necessary information as regards

the overall dimensions of the circuit breakers and details necessary for the design of the foundation. General information regarding maintenance should also be given.

B) 11 KV VOLTAGE TRANSFORMERS :1) Manufacturer's name.2) Type designation.3) Highest equipment voltage.4) Number of phases.5) System earthing.6) Insulation level :

i) One minute power frequency withstand voltage for :a) Primary winding.b) Secondary winding.

ii) Impulse withstand voltage.7) Frequency.8) Transformation ratio.9) Rated output.10) Accuracy class.11) Winding connection.12) Type :

i) Resin castii) Whether three phase.iii) Type of fuses provided.

a) Primary.b) Secondary.c) Make.

14) Whether Voltage Transformer is mounted on the top part of the Cubical.C) Current Transformers :

1) Manufacturer's name.2) Type designation.3) Rated voltage.4) Type of insulation resin cast.5) Insulation level :

i) 1 Mt.PF withstand voltage for primary winding.ii) Impulse withstand voltage.iii) PF withstand voltage for secondary.

6) Frequency.7) Transformation ratio.8) Rated output (Core-I and Core-II).9) Class of accuracy (Core-I and Core-II).10) Instrument security factor.11) Short time thermal current and its duration.12) Secondary wdg. rise at 75 C.(Max.)13) Knee point voltage.14) Maximum exciting current (in r.m.s.)

D) RELAYS :Numerical Relay

1. Manufacturer's name.2. Type designation.3. Rated CT Secondary Current.4. Tap range.5. VA burden.

i) Highest tap.ii) Lowest tap.

6. Rate Voltage of Coil for Operation.

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7. Whether relay is able to store a minimum of two previous fault values including fault level and phase.

8. Whether relay is mounted in flush pattern on the Panel board.9. Whether test blocks provided as per specification.10. Whether numerical relay is with communication facility and standard open

protocol / SCADA compatibility alongwith IED for purpose of SCADA. 11. Whether communication on RS-485 Port-Mod Bus-Open Protocol provided.12. Type of characteristic.13. Descriptive leaflet attached or not.14. Accuracy class of CT needed.15. Range of setting for over current and earth fault protection.16. Whether drawout type.

E) INDICATING AND INTEGRATING INSTRUMENTS :I) Ammeter Voltmeter PF Meter

1. Manufacturer's name2. Type designation/reference.3. Accuracy class(es) & governing standard.4. The burden in VA at normal current and/or nominal voltage.

a) Current coil.b) Potential coil.

5. Transformation ratio(s) of instrument transformer(s) for which the instrumentc has been adjusted, if relevent.

6. Size.7. Whether suitable for sheet steel mounting.8. Colour finish.9. Short duration overload capacity.10. Make and type of selector switch for Ammeter/Volt meter.

II) Control Switches :1. Manufacturer's name.2. Type designation.3. Type of handle provided.4. No. of position.5. No. of contacts.

i) Normally closed.ii) Normally opened.

6. Making capacity/breaking capacity.7. Whether spring return to normal or stay put type.8. Type of lock provided.

III) Indicating Lamps :1. Manufacturer's name2. Type designation.3. Operating voltage.4. Size of lense.5. Wattage of lamps.6. Colour of lamp body.

IV) Switch Board Wiring :1. Insulation of wiring.2. Size of wiring conductor for

a) CT circuits.b) PT circuits.c) AC supply circuits.d) Other circuits.

3. Size of earthing bar for safety earthing.4. Type of terminals provided on wiring.5. Conductor material.6. Colour used.

a) AC circuits.i) 1st phase.ii) IInd phase.iii) IIIrd phase.iv) Neutral.v) Earth.

b) DC circuits.

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7. Identification of suffix used for :a) Metering circuits.b) O/C and E/F indication.c) AC aux. circuits.

F) MISCELLANEOUS INFORMATION :1. Bushings :

a) Make and Drawing No.b) Type of bushing.c) Creepage distance.

i) Totalii) Protected.

d) 1 minute power frequency withstand test voltage for bushing.i) Dry.Ii) Wet.

e) Impulse withstand voltage.f) Reference standardg) Permissible safe contiliver loading on bushingh) Catalogue n. of bushing offered and its mechanical strength.

2. Motor / Magnetic Actuator :a) Makeb) Wattagec) Rated voltaged) Protecton equipmente) Closing contactor

3. Terminal connectors :a) Make/Material.b) Rated continuous current.c) Rated short time current for 3 seconds.d) Max. temp. rise of terminal connector over ambient temp. of 50 Deg.C. & Max.

temp. attained.4. Paint shade of outdoor.kiosk.5. Main bus bar :

a) Size.b) Material (Copper only).c) Rated short time current for 3 seconds.d) Current density.

6. Interconnecting Bus Bar.a) Size.b) Material (Copper only).c) Rated continuous current for 3 seconds.d) Current density.

7. C.T. Windings :a) Primary :

i) No. of turns.ii) Cross sectional area.iii) Material.

b) Secondary :i) No. of turns.ii) Cross sectional area.iii) Material.

8. Power Cable sealing kits :a) Makeb) Typec) Size

9. List of interlocksi) Mechanical interlockii) Electrical interlock.

10. Overall dimensionsa) For vacuum circuit breaker kiosk complete.b) Circuit breakersc) Impact for foundation design to include dead load + impact value on opening at

max. interrupting rating in dead load.

98


11. Constructional Featuresi) Mass of complete circuit breaker with mechanism and vacuum bottle.ii) Mass of vacuum bottle.iii) No. of breaks in series per pole.iv) Minm. clarance in air.

a) Between poles.b) to earth.

12. Arrangement provideda) Pole discrepancy.b) Trip free/fixed tripc) Anti pumping

13. Connecton for CTsa) Sizeb) Material

14. Connecton for PTsa) Sizeb) Material

99


Sheet- 5

Schedule of Guaranteed Technical Particulars for 11 kV Single Phase PotentialTransformer

S.No. Particulars To be Furnished by The Bidder1. Name and Address of Manufacturer2. Manufacturer’s type and designation3. Nominal system voltage (KV rms)4. Highest system voltage (KV rms)5. Insulation level

a) Impuse withstand voltage (KVPb) One minute power frequency dry withstand voltage (KV rms)

6. Rated frequency (Hz.)7. Rated transformation ratio8. Rated output (VA burden per ph.)9. Class of accuracy10. Rated voltage factor and time11. Winding connections

a) Primaryb) Secondary

12. Details of winding particulars No. of Turns Cross Sectional Area of Each Turn Sqmm Total weight Winding approxa) Primary winding (Copper)b) Secondary winding (Copper)

13. Guaranteed ratio error (max.)14. Guaranteed phase angle error (max.)15. Guaranteed max. temperature rise of the winding over an ambient temperature of 50 degree C at

rated continuous thermal current at rated frequency and with rated burden.16. Bushing details

a) Makeb) Catelogue No.c) Total creepage distance (mm)d) IS to which bushing conformse) Arcing distance (mm)f) Max. cheepage factor

17. I. Insulation ClassII. Insulation material used

18. Core detailsa) Materialb) Weight of the core etc.

19. Whether any PT fuse have been provided in secondary side of P.T.20. Whether neutral of PT or PH side is isolated/floated

100


Technical Detail and Specifications FormS.No. Brief

DescriptionUnits M

ake

Make Offered

Brief Specifications (rating, cap.,voltage,current,frequency,tolrences, temp.,range and other important operating parameters in conformity to bidding document specifications

Compliance to IEC/ relevant qualification standards

1 SPV Modules for a total cap. as per specifications

2 Central Inverter as per specs.

3 Array junction panels

4 Main Junction Panel

5 DC Combiner panels as per specs.

6 ____AC Distribution panel with SFU for Auxillary Transformer

7 DC Cables for solar PV array and field application

8 Plant earthing complete both DC and AC side including ODY earthing as per specifications.

9 Yard Lightning for the complete Solar array field and illumination of the compound chain wall and yard/control

10 ACBs for Inverter Protection

11 Control room, office Air conditioner, and any other equipment required to complete the installation

101


Sheet- 6

Guaranteed Technical Particulars (To Be Submitted By The Bidder)

S. No. Parameter Guaranteed Value------------------------------------------------------------------1. LED Operating Current2. Output Luminous Flux3. Beam Angle4. Illuminance5. Photometric Curve6. Material of Luminaire7. Dimension8. Weight9. Impact Resistance10. LED Life

102


20. OTHER CIVIL STRUCTURESComplete Civil Works and piping, Water pump

General Specification of Work.

Scope : The scope of work includes :1. Civil, array structures and Plant control room and Stores, Security office,

complete design, construction of array support structures, Plant control room for

dust free and air-conditioned environment for INVERTERS and other control and

data logging equipment (separated through aluminum /glass panels) with suitable

ventilation as per details given in the technical schedules.

2. Site Grading, leveling, exploratory drills if necessary and consolidation of the

area pertaining to the area of the solar plant.

3. Embedment of structures suitable for mounting of PV modules on ground in an

area of 5 acres of land. Laying of earthing equipment/structures and connecting

to the main ground mat as per statutory requirements.

4. Cutting of cable trenches wherever necessary, construction of all around

compound wall for the plant having height 6’ and power evacuation line bay and

providing suitable gates.

5. Formation of roads wherever necessary, providing foundation for transformers ,

structures and water drainage ducts, lightining arrestors etc.

6. Construction of plant control room, stores in about 40 x20 sq.ft area and 12’ ht. to

house control, protection, scada and Electrical panels and provision for cable

trenches and trays, ducting etc. .

7. Construction of one no Offices with Toilet and Pantry of approx. area 200 sq. ft ,

and Security office of 120 sqft approx having one bathroom cum toilet at the main

gate entrance, one number metering room house for the ABT meter alongwith

CT/PT of 7 foot by 7 foot size of 11 foot height with suitable door and window to

be constructed in the ODY. .All the buildings should have suitable almirahs for

storage purposes.

8. Modifications may be required and made as per site conditions, for which

decision of the purchaser shall be final.

9. Full painting of the control room provided in the building along with necessary

partition with glass and aluminum frame structure works.

10. Providing of pedestals required for mounting of the inverter’s and control panels.

11. Water pump with shed along with full C class piping for water supply on the

rooftop with array level supply points for panels cleaning and washing along with

water discharge piping upto ground level.

12. RCC columns structures to support the structural steel / aluminium frame work /

depending on design approval.

13. Any other work urgently required as per site conditions.

103


14. Full water proofing of the building rooftop have to be carried out after installation

of structures if required.

15. All structural drawings to be got approved from PEDA.

A) Brick Work :1. Unless otherwise specified, brick work shall consist of first class bricks

laid in the specified mortar strictly according to drawings and

specifications.

2. Bricks required for brick work in cement mortars shall be thoroughly

soaked in clean water immediately before use for one hour or till complete

causation of air bubbles which ever is later, in brick lined or steel tanks of

sufficient size. The soaked bricks shall be kept on wooden planks or brick

platforms to avoid earth being smeared on them. Unless otherwise

specified, bricks shall be laid in English bond, with frogs upwards.

3. All horizontal joints shall be parallel and unless otherwise specified, truly

level. All vertical joint shall be truly vertical and they shall come directly

over one another in alternate courses.

4. The thickness of joints shall be as follows :

“ The thickness of joints shall be 1/4” and shall not exceed 3/8” The height

of four courses (and four joints) as laid, shall not exceed by more than 1”

the height of four bricks as piled dry one upon the other.

5. Protection & Cutting : Brick work laid in cement shall be protected from

rain by suitable covering while it is green. Later on it shall be kept moist on

all the faces for a period of two weeks.

B) Cement Plaster1. Plastering shall be done in mortar of various ingredients mixed in the

specified proportion in the drawing and shall be specified thickness as per

drawings.

2. Preparation of surface for the durability of the plaster is of the utmost

importance to obtain satisfactory bond between the background and the

plaster coat and also ensure that the bond is maintained subsequently.

3. The brick wall should be watered for 24 hours before the plaster is

applied.

4. After completion, plaster shall be kept wet for 10 days and shall be

protected during that period from extreme of temperature and weather.

5. All the structures above ground level shall be plastered with C.M 1:4 both

inside and outside of thickness 12 mm and 20 mm as required.

C) Cement Concrete/RCC:

104


The cement concrete /RCC shall be laid (two coats) as per para 10.4/10.7 of

Punjab PWD specifications.

1. Cement : Cement used shall be ordinary portland cement or rapid

hardening portland cement in accordance with specification no 3.14 for

portland cement and shall confirm to the requirement of Indian Standard

269

2. Water : Water used for all construction work shall be clean from

objectionable quantities of suspended material, vegetable or organic

impurities, alkali salt and other deleterious substance likely cause

efforescene

3.

a) Sand: Sand is important constituent of mortars and for satisfactory

performance, its requirement for cleanliness, freedom will depend

upon the purpose for which the mortar is used. The sand shall

consist of natural sand, crushed stone sand or crushed graded

sand or composite of any of these and should be hard, durable

chemically inert, clean and shall not contain any appreciable

amount of clay balls or pellets

b) For concrete /RCC works only sand should be used.

c) For brick works and plastering purposes fine sand shall be used.

Fine sand shall be such that it passes through BS Sieve no 16 (IS

Sieve no 15) . For all concrete /RCC mixes 1:1.5:3 – (M-20), only

crushed bajri ½” graded and for cement concrete 1:8:16 in

foundation brick ballast of 50 MM gauge shall be used.

d) Stacking : Sand shall be stacked on wooden or bricks platform

and shall be so stored as to be adequately protected from any

admixture or clay, dust.

D) CEMENT, SAND, MORTARS:Cement and sand shall be spread on a clean dry platform in layers one over the

other in the proportions specified, and mixed dry three times over. The sand

used should be perfectly dry. Water should be added to the dry mix, only when

the mortar is required for use.

E) STEEL:Mild steel cold twisted / thermo-mechanical twisted bars as per Indian Standard

shall be used as per drawings.

F) CEMENT:The arrangement for storage of cement shall be done by the contractor and

stored to the satisfaction of PEDA in weather tight building or sheds, the floors of

105


which shall be damp proof and at least 18” above the natural surface of the

ground. Cement shall not be stored in contact with walls and should be stacked

not more than 10 layers high to prevent bursting of bags in the bottom layers and

formation of clods.

G) Structural steel work : The structural steel shall conform to the relevant Indian

Standards IS:226 and IS:2062. Fabrication and erection shall be done as per

approved drawings and in accordance with IS 800. Providing shop primer coat

and finish coats in approved color for steel structure. Grouting of holding down

bolt pocket and below base plates where required.

H) Wood : Sawn timber for various building works specified variety of timber

specified in design and drawing shall be used in work. The well seasoned timber

shall be sawn in the direction of grains and the sawing shall truly straight and

square. Wood work shall conform to IS:883.

I) Stones : The stones shall be of specified variety and shall be obtained only from

an approved quarry. These shall be hard, round, durable, free from any defects.

The percentage of water absorption shall not be more than 5% when tested as

per IS method of testing for water absorption for natural building stones. The

minimum crushing strength shall be 200Kg/Sq.Cm. unless higher minimum

strength is specified in any particular call.

J) Aluminum work : The aluminum sections as per Indian standard shall be

used as per drawings for door, windows, ventilators of any specified

glazing work.

K) Module / Array Cleaning System : 2nos. 2HP, BIS approved

submersible pumps shall be installed with suitable boring at the plant site

along with water headers at suitable points in the array field

underground embedded under main pipes in the array field. Suitable nos.

of water outlets with array installed piping for modules cleaning through

automatic spray water cleaning mechanism shall be provided through C

class GI ISI approved pipes. The header to be suitably designed for

pressurized water supply for modules successful cleaning . Bidder to

submit complete design and drawings for approval. For the office complex,

overhead HDPE tanks of suitable size with pipes and jet pumps of 1HP 2

nos. shall be installed.

L) Tests : All material to be used for construction and fabrication should be

tested before use. All laboratory/Field tests should be conducted as per

relevant Indian standards and PWD specifications by taking minimum

required samples.

106


M) DANGER BOARDS Danger boards should be provided as and where necessary as per IE Act./IE

rules as amended up to date.

N) FURNITURE AND FURNISHINGS :

One Office to be retained by PEDA shall be furnished with :

1. One Large Office table with office chair, 6 Chairs, 2 Almirahs, 1 small

office table with chair and one 4 seater office sofa (Godrej make).

Venitian blinds for windows and fans, one split AC of 1.5Ton

2. Complete crockery set for office pantry, small water cooler, small fridge,

tea / coffee electric kettle.

Security Office to be furnished with :

3. One Office table with Chair and 4 chairs with 1Almirah. 1 Fan and 1 water

cooler

19. DRAWINGS & MANUALS 5 copies of Engineering, electrical drawings and installation and O&M manuals are to be

supplied

Bidders shall provide complete technical data sheets for each equipment giving details

of the specifications along with make/makes in their bid along with basic design of the

power plant and power evacuation, synchronization and distribution for street lighting

system along with protection equipment. Approved ISI and reputed makes for equipment

be used.

For complete electro-mechanical works, bidders shall supply complete design, details

and drawings for approval to PEDA before progressing with the installation work.

QUALITY AND ADAPTABILITY OF THE EQUIPMENT:Bidders must verify the grid behavior, solar insolation levels, general site conditions on

their own before bidding, the bidder shall accordingly ensure that the equipment and the

design submitted, shall be able to perform as per guaranteed performance levels in the

available site conditions. The design of the plant and the equipment offered by the

bidders shall be evaluated for its quality and adaptability to the site conditions based on

the purchasers past experience, projects earlier executed by the bidders and from other

sources. Bidders must submit detailed technical operational parameters and latest plant

performance indicators and status complete with the clients address and contact no’s.

with regard to projects of similar nature already executed.

107


SECTION VIII

8. Bid Form, Price Schedules and other Formats

108


1. BID FORM AND PRICE SCHEDULE

Date :..............................Contract No :...................

TO: (Name and address of purchaser)

Gentlemen and/or Ladies:

Having examined the Bidding Documents including Addenda Nos............... [insert numbers], the receipt of which is hereby duly acknowledged, we, the undersigned, offer to supply and deliver....................................................... (Description of Goods and Services) in conformity with the said bidding documents for the sum of ..................... (Total bid amount in words and figures) or such other sums as may be ascertained in accordance with the Schedule of Prices attached herewith and made part of this bid.

We undertake, if our bid is accepted, to deliver the goods in accordance with the delivery schedule specified in the Schedule of Requirements.

If our bid is accepted, we will obtain the guarantee of a bank in a sum equivalent to ...... percent of the Contract Price for the due performance of the Contract, in the form prescribed by the Purchaser.

We agree to abide by this bid for the Bid validity period specified in Clause 16.1 of the Bid Data Sheet and it shall remain binding upon us and may be accepted at any time before the expiration of that period.

Until a formal contract is prepared and executed, this bid, together with your written acceptance thereof and your notification of award, shall constitute a binding Contract between us.

We undertake that, in competing for (and, if the award is made to us, in executing) the above contract, we will strictly observe the laws against fraud and corruption in force in India namely “Prevention of Corruption Act 1988”.

We understand that you are not bound to accept the lowest or any bid you may receive.

We clarify/confirm that we comply with the eligibility requirements as per ITB Clause 2 of the bidding documents.

Dated this ....... day of ............................ 20 .....

__________________________________(signature)(in the capacity of)

Duly authorized to sign Bid for and on behalf of ___________________________________________

109


PRICE SCHEDULE FOR GOODS AND SERVICES FOR SPV POWER PLANT AT ANY VILLAGE ANY DISTRICT IN THE STATE OF PUNJAB.

1 2 3 4 5 6 7

Price for each unit

S.no. Item description country of origin

quantity Ex-factory /Ex-warehouse/Ex-showroom/ off the shelf

packaging and forwarding

Inland transportation, insurance & other local costs incidental to delivery

Incidental services listed in SCC clause 8 Except for annual maintenance charges which should be quoted separately

unit price

Total price for delivery at final installation

(a) (b) (c) (d) a+b+c+d

4x 6

1 Complete Supply, Installation & commissioning of 1MWpComplete Supply, Installation & commissioning of 1.5MWpComplete Supply, Installation & commissioning of 2.0MWpComplete Supply, Installation & commissioning of 2.5MWp SPV power plant

Note :(a) In case of discrepancy between unit price and total price Total bid price

, the unit price shall prevail. currency INR In figures : __________________________________

In words : __________________________________ Signature of Bidder

Name (b) Charges for annual operation & maintenance for 10 years should be quoted separately in annexed price schedule Business Address

Place : Date :

110

PRICE SCHEDULE FOR ANNUAL OPERATION AND MAINTENANCECHARGES FOR 10 YEARS PERIOD FOR 1MW,1.5MW,2MW & 2.5MWp

A B C D 1MW 1.5MW 2MW 2.5MWPack no.

Item Description Qty. Operation & Maintenance charges for 10 years including supply of spares and inclusive of all service taxIndian Rupees

1. *Year 1Year 2Year 3Year 4Year 5TOTAL

2. *Year 6Year 7Year 8Year 9Year 10TOTALGRAND TOTAL

Note : (1) This should be given item-wise, year-wise with total in Column D.(2) In case of discrepancy between unit price and total price, the unit price shall

prevail

Signature of Bidder ________________

Name ________________

Business Address ________________

________________

Place :Date :

1MWp-PH 112

3. CONTRACT FORM

THIS AGREEMENT made the .......day of.................................., 20... Between .......................... (Name of purchaser) of .............. (Country of Purchaser) (hereinafter "the Purchaser") of the one part and ..................... (Name of Supplier) of ......................... (City and Country of Supplier) (hereinafter called "the Supplier") of the other part :

WHEREAS the Purchaser invited bids for certain Goods and ancillary services viz., ..................................... (Brief Description of Goods and Services) and has accepted a bid by the Supplier for the supply of those goods and services in the sum of .............................. (Contract Price in Words and Figures) (hereinafter called "the Contract Price").

NOW THIS AGREEMENT WITNESSETH AS FOLLOWS:

1. In this Agreement words and expressions shall have the same meanings as are respectively assigned to them in the Conditions of Contract referred to.

2. The following documents shall be deemed to form and be read and construed as part of this Agreement,viz.:

(a) the Bid Form and the Price Schedule submitted by the Bidder;(b) the Schedule of Requirements;

(c) the Technical Specifications; (d) the General Conditions of Contract; (e) the Special Conditions of Contract; and (f) the Purchaser's Notification of Award.

3. In consideration of the payments to be made by the Purchaser to the Supplier as hereinafter mentioned, the Supplier hereby covenants with the Purchaser to provide the goods and services and to remedy defects therein in conformity in all respects with the provisions of the Contract.

4. The Purchaser hereby covenants to pay the Supplier in consideration of the provision of the goods and services and the remedying of defects therein, the Contract Price or such other sum as may become payable under the provisions of the Contract at the times and in the manner prescribed by the Contract.

Brief particulars of the goods and services which shall be supplied/provided by the Supplier are as under:

______________________________________________________________________________SL. BRIEF QUANTITY TO UNIT Total DELIVERY TERMSNO. DESCRIPTION- BE SUPPLIED PRICE Price

(CIF/CFR/FOB/FCA OF GOODS & ETC.) SERVICES

________________________________________________________________________

TOTAL VALUE:DELIVERY SCHEDULE:

IN WITNESS whereof the parties hereto have caused this Agreement to be executed in accordance with their respective laws the day and year first above written.

Signed, Sealed and Delivered by the said ..................................................... (For the Purchaser)

in the presence of:.......................................Signed, Sealed and Delivered by the said ..................................................... (For the Supplier)

in the presence of:.......................................

1MWp-PH 113

6. MANUFACTURERS' AUTHORIZATION FORM

No. dated To

Dear Sir:

IFB No. ___________________

We who are established and reputable manufacturers of ________________________ (name & descriptions of goods offered) having factories at (address of factory) do hereby authorize M/s ___________________ (Name and address of Agent) to submit a bid, and sign the contract with you for the goods manufactured by us against the above IFB.

We hereby extend our full guarantee and warranty as per Clause 15 of the General Conditions of Contract for the goods and services offered for supply by the above firm against this IFB.

Yours faithfully,

(Name) (Name of manufacturers)

Note: This letter of authority should be on the letterhead of the manufacturer and should be signed by a person competent and having the power of attorney to legally bind the manufacturer. It should be included by the Bidder in its bid.

(The list of items for which this is required should be indicated by Purchaser).

1MWp-PH 114

THE PURCHASERAFTER SUCCESSFUL COMMISSIONING OF EQUIPMENT

[This is to be attached for supply, erection, supervision of erection contacts only]

No. Date :

M/s.

Sub: Certificate of commissioning of equipment

1. This is to certify that the equipment as detailed below has/have been received in good condition along with all the standard and special accessories (subject to remarks in Para No. 2) and a set of spares in accordance with the Contract/Specifications. The same has been installed and commissioned.

(a) Contract No._________________ dated ______________________

(b) Description of the equipment _______________________________

(c) Plant Nos. _______________________________________________

(d) Quantity ________________________________________________

(e) Bill of Lading ____________________ dated ___________________(for import contract)

(f) Name of the vessel/transporter _______________________________

(g) R/R No. _____________________ dated ______________________

(h) Name of the consignee _____________________________________

(i) Date of commissioning and proving test ________________________

2.Details of accessories/spares not yet supplied and recoveries to be made on that account:

S.No. Description Amount to be recovered

3.The proving test has been done to our entire satisfaction and operators have been trained to operate the plant.

4. The supplier has fulfilled his contractual obligations satisfactorily*

or

The supplier has failed to fulfil his contractual obligations with regard to the following :

(a)

(b)

(c)

(d)

5. The amount of recovery on account of non-supply of accessories and spares is given under Para No. 2.

6. The amount of recovery on account of failure of the supplier to meet his contractual obligations is as indicated in endorsement of the letter.

1MWp-PH 115

Signature _______________________

Name _______________________

Designation with stamp __________________

____________________________________________

* Explanatory notes for filling up the certificates :

(a) He has adhered to the time schedule specified in the contract in dispatching the documents/drawings pursuant to Technical Specifications.

(b) He has supervised the commissioning of the equipment in time i.e. within the period specified in the contract from the date of intimation by the Purchaser in respect of the installation of the plant.

(c) Training of personnel has been done by the supplier as specified in the contract.

(d) In the event of documents/drawings having not been supplied or installation and commissioning of the equipment have been delayed on account of the supplier, the extent of delay should always be mentioned.

1MWp-PH 116

9. FORMAT FOR QUALIFICATION APPLICATION

All the bidders submitting their bids against this bid for any or all items must submit the qualification application along with the information in the following formats together with the relevant documentation :

FINANCIAL BUSINESS AND TECHNICAL CAPABILITY

FORMAT – A

Name and address of bidder :

Phone : Telex: Fax :

1. Latest Balance sheet filed with _____________ on _____________ (Attach audited copies of annual accounts of past 3 years. Indigenous bidders to attach copy of accounts audited under section 44AB of Income Tax Act. In case the accounts are not required to be audited, the information in this statement should be attested by a Chartered Accountant or Manager of a reputable Bank

2. Latest profit & Loss statement from __________ to _________ filed with _________ on _________ (Attach an audited copy)

3. Financial position (in the respective currency)

a. Cash & Bank balancesb. Fixed Assets Gross and Netc. Current Assetsd. Current Liabilities

Bank cash credit LoanOthers (including sundry creditors)

e. Provisionsf. Contingent Liability (includ. Claims

not acknowledged, pl. specify)g. Inventoriesh. Share Capital

Free ReservesOther reserves (Please specify)

i. Terms loans from financial institute & Banks

j. Working capitalk. Net worthl. Debtors & advances considered

good more than 6 months Less than 6 months

4. Total liabilities(a) Current Ratio Current Assets to Current liabilities(b) Acid Test Ratio(c) Total liability to Net worth

1MWp-PH 117

5 Net Sales (in respective currency)(a) Current period(b) During the last financial year(c) During the year before last

financial year6 Net profit before tax

(a) Current period(a) During last financial

year(b) During the year

before the last financial year

The profit and loss statements have been certified through _________________________ ________________________________________ by _____________________________

7 Bidders Financial Arrangements (check appropriate item)(a) Own Resources(b) Bank Credits(c) Other (specify)

8 Certificate of Financial Soundness from bankers of bidders.

9 Income tax clearance [for bidders from India only]Please enclose copies of following documents :(a) Details of income tax

registration; and(b) Last Income Tax clearance

certificate10 Sales

Category Value of current orders to be executed in respective currency

Value anticipated sales for next financial year in respective currency

A Govt. DepartmentB Commercial

11 Licensed capacity to manufacture

Description of Equipt.

Size Cap. Licensed capacity

No. of units manufactured

Current Yr. Last Yr. 2nd Last Yr.

12 List, if any bidder’s rate contract with the following organization :

Organization Yes/No If yes, date contract finalized

a Directorate General of Supplies and Disposal, Government of India

b Central equipment Stores Purchase Organization for State Government

c Others

1MWp-PH 118

13 Describe Quality Control Organization, if any, and give the organization chart.a) Are goods offered subject to

batch test, random sampling or full 100% test for quality ?

b) Are tests carried out by factory employees or by a separate testing agency ?

c) Are independent Quality Control Organization checks made and certificates issued

1MWp-PH 119

CAPABILITY STATEMENT OF PERSONNEL, EQUIPMENT, PLANT AND PAST PERFORMANCE

(Format – B)

1 Name and address of the bidder

: Phone : :

2 Classifications)Circle what is applicable

: 1 Manufacturer :

2 Authorized Agent :3 Dealer :4 Others, please specify :

3 Plant :a) Locationb) Description, Type and size of

buildingc) Is property on lease or free hold ? If

on lease indicate date of expiry of lease in each case.

4.a) Type of equipment manufactured and supplied during last 2 years

Name of equipment

Capacity/size Nos. manufactured Project to which supplies are made

No. of orders on hand

b) Type of equipment manufactured, supplies, installed and commissioned during last 2 years.

Name of equipment

Capacity/size Nos. manufactured Project to which supplied, installed & commissioned

No. of orders on hand

5. a) Type of equipment supplied during last 2 years other than those covered under 4 above.

Name of equipment

Capacity/ size & model

Nos. manufacturers and country of origin

Total nos. supplied in India

Projects to which supplies are made

Nos. of orders on hand

(b) Type of equipment supplied, installed and commissioned during last 2 years other than those covered under 4(a) and (b) above.

Name of equipment

Capacity/ size &

Nos. manufacturers and country of

Total nos. supplied in

Projects to which supplies

Nos. of orders

1MWp-PH 120

model origin India are made on hand

6. Plant facilities

Sq. Meter Remarksa. Space available for manufactureb. Space available for storagec. Space available for inspection items

offeredd. Space available for storage items offerede. Are buildings fire resistant ? Yes/Nof. Are premises approved by Municipal Fire

production ?g. Are buildings under Municipal fire

productions ?h. Are power and fuel supply adequate to

meet production requirements ?i. Are adequate transportation facilities

available ?j. Are safety measures adequate for

performance of proposed contract ?k. Are adequate material handling available ?

7. Details of Testing facilities available

a List testing-equipment availableb Give details of tests which can be carried

out on items offeredc Details of testing organization available

8. Personnel/ Organization :

1 Production2 Marketing3 Installation and Commissioning4 Service5 Spare Parts6 Administrative

9. Nearest service center to buyer :Location………………………………………………..…. Phone no………………………..

1MWp-PH 121

10. Details of organization at Service Centre :

a No. of skilled employeesb No. of unskilled employeesc No. of engineering employeesd No. of administrative employeese List of special repair/workshop facility

availablef The storage space available for spare

parts Sq.m.g Value of minimum stock of spares

available at all the service centers in respective currency………………………….

h List of the models/type of number of equipment serviced by the center in last 2 years

11. Names of two buyers to whom similar equipment are supplied installed and commissioned in the past and to whom reference may be made by the purchaser regarding the bidder’s technical and delivery ability :

1. ___________________________________

2. ___________________________________

12. List of components usually subcontracted

13. Schedules for furnishing technical data and certified drawings after receipt of orders _____________________________________________________________

14. Workload as percentage of total capacity for the current and forthcoming financial year on quarterly basis _________________________________________________

15. Number of weeks required to prepare a bid proposal _________________________

1MWp-PH 122

11. TECHNICAL DETAIL FORM(Clause 14 of ITB)

S.No. ITEM PARTICULARS1. SOLAR PHOTOVOLTAIC MODULES1.1 MANUFACTURER1.2 SIZE1.3 TESTING AND QUALIFYING STANDARDS

(Attach Certificates)1.4 I-V curve attach1.5 P max1.6 I mp1.7 V mp1.8 CELL EFFICIENCY / MODULE EFFICIENCY1.9 No. of cells in a module1.10 Warranty offered (Attach Certificate) from OEM2 INVERTERS2.1 TYPE / MAKE2.2 AC Output Voltage2.3 DC input voltage range2.4 DC operating voltage2.5 Continuous rating2.6 Grid Voltage Tracking range2.7 Grid Frequency tracking range2.8 Grid Phase imbalance2.9 Efficiency2.10 Operating temperature range2.11 Power control2.12 Protection features2.13 Overload capacity2.14 Total harmonic distortion2.15 Islanding protection2.16 Ingress protection2.17 Hardware platform2.18 DC input overload capacity2.19 Electronic metering accuracy2.20 Data logger accuracy3 Battery 3.1 Type 3.2 Manufacturers name3.3 Capacity Ah3.4 DOD %3.5 Rated normal voltage3.6 Rated maximum voltage3.7 Rated minimum voltage3.8 Applicable standard3.9 Ampere hour efficiency

Signature of the Bidder ___________________________Business Address ______________________________

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SECTION IX

10. SCOPE OF OPERATION & MAINTENANCE OF POWER PLANT

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Scope of operation & maintenance of SPV power plant for a period of 10 years from date of commissioning

Regular operation & maintenance of the SPV Power Plant for a period of ten years after commissioning along with supply of consumable items as and when necessary and submission of daily performance data of the power plant shall come, under the operation & maintenance contract. Complete operation & maintenance of the plant has to be carried out by the successful bidding company and can not be sublet to any third party.

The operation and maintenance schedule of the SPV power plant during the 10 years contract period shall be as detailed below :

1. 10 years operation and maintenance period shall begin on the date of actual commissioning of the power plant. The requisite number of qualified and trained personnel are required to be deputed round the clock from that very day.

2. The security of the power plant will rest with the suppliers till such time operation and maintenance of the power plant is not handed over to the purchaser.

3. The deputed personnel shall be qualified and well trained so that they can handle any

type of operation hazard quickly and timely.

4. The deputed personnel shall have to keep daily log sheet for the power plant as per format to be supplied after commissioning of the power plant.

5. The deputed personnel shall be in a position to check and test all the equipment regularly, so that, preventive actions, if any, could be taken well in advance to save any equipment from damage. Any abnormal behavior of any equipment shall be brought to the notice of PAU immediately for appropriate action.

6. The deputed personnel shall keep clean the power plant in all time. Cooking in the control room will not be allowed under any circumstances.

7. Normal and preventive maintenance of the power plant such as cleaning of module surface, tightening of all electrical connections, changing of tilt angle of module mounting structure, cleaning & greasing of battery terminals etc.

8. During operation & maintenance period of ten years of the power plant, if there is any loss or damage of any component of the power plant due to miss management/miss handling or due to any other reasons, what-so-ever, the supplier shall be responsible for immediate replacement/rectification. The damaged component may be repaired, if it is understood after examination that after repairing performance of the component shall not be degraded, otherwise the defective component shall have to be replaced by new one without any extra cost.

9. List of Spare parts & measuring instruments which are to be supplied along with the systems are given in Annexure 1. These spares are the property of the purchaser and the contractor will use these spares sparingly with express permission of the purchaser in case of emergency breakdowns, however, the contractor will have to refill the used spares within one month of draw down. All the spares inventory of the purchaser has to be fully refilled with new and unused spares at the time of handing over of the plant after completion of the 10 years of O&M of the plant by the contractor in case of non-compliance, the purchaser will refill these spares with new ones at the cost of the contractor.

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10.Operation & Maintenance Instructions :

10.1 The successful bidder shall furnish 5 sets of the approved manuals of instructions at

the time of inspection and taking over of the equipment. These manuals shall properly bound

in book form and contain all information, description of equipment, diagram etc., necessary

to enable the customer to operate and maintain the whole scheme.

10.2 Proper Operation & maintenance of the plant shall be carried out by the contractor

during O&M period of 120 months with 6 monthly/annual review checkup of plant and

equipment in detail with purchaser.

10.3 Properly qualified and trained personnel well versed in O& M of SPV plants and

knowledge of computers with approval from purchaser shall be deployed at site for operation

& maintenance.

10.4 Proper repainting, re coating of exposed surfaces/civil works to prevent rusting &

replacement of worn out parts shall be carried out along with the maintenance of the

INVERTER on as per requirement basis. However, white wash, painting, maintenance of

civil structures , buildings, compound wall shall be carried out once in three years.

Plant personnel shall be deputed on such basis so that one no. qualified person

with a minimum qualification of Diploma in Electrical Engineering with minimum

one years experience in operating such SPV Power Projects should be available

at site always during the operation & maintenance period. Round the clock

security with two security personnel to be deployed in each shift. Company will be

required to deploy adequate un-skilled / skilled manpower as per site requirement

in consultation with PEDA for site maintenance, modules cleaning, general

upkeep.

Supplier shall depute one engineer of their company for the operation and

maintenance of the plant who shall be fully responsible for the complete O&M

and optimum operation of the plant. The name and contact nos. of this engineer

shall be notified to the purchaser, for the purpose of contact, responsibility and

correspondence with regard to all trouble shooting.

Replacement & repair of damaged parts shall be carried out immediately during

the O&M period so as to ensure at least 95% uptime.

Plant operation reports in a format prescribed by the purchaser shall be furnished

by the supplier on a weekly and monthly basis.

Plant shall be operated as per the standard IER practices to ensure proper safety

measures.

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Proper data logs and records shall be maintained at the plant office with regard to

generation, efficiency, solar radiation, grid conditions and power fed to the grid

which shall be supplied on demand to the purchaser.

Proper operation & maintenance of the complete street lights installed along with

replacement of defective wires and lights fixtures shall be carried out on an

immediate basis.

The supplier shall ensure replacement of worn out parts and components during

the operation & maintenance period for which purpose the supplier shall carry

and maintain minimum inventory levels of spares at the plant and at its works.

In case of delay in repair & maintenance and non observance of purchasers O&M

schedules, the purchaser shall have the right to impose any penalties including

forfeiture of performance security.

Round the clock maintenance (routine, preventive, breakdown and capital

maintenance) of complete plant and equipments including Facade lighting,

Battery banks, SPV Array, INVERTER, SCADA system with dedicated telephone

lines shall be carried out by the supplier in accordance with manufacturer’s

instructions, manufacturers procedures, relevant safety codes, Indian Electricity

Act, Indian Electricity Rules, purchaser’s instructions, prudent utility practices etc.

10.5 Routine, Preventive, Breakdown & Capital Maintenance: Routine and preventive maintenance shall include such checks and maintenance

activities round the clock on hourly, shift wise, daily, weekly, fortnightly, monthly,

quarterly, half yearly, and yearly basis which are required to be carried out on all the

components of the power plant to minimize breakdowns and to ensure smooth and

trouble free running of the power plant. The supplier shall be responsible to carry out

routine and preventive maintenance and replacement of each and every component /

equipment of the power plant and he shall provide all labour, material, consumables etc.

for routine and preventive maintenance at his own cost.

Breakdown maintenance shall mean the maintenance activity including repairs and

replacement of any component or equipment of the power plant which is not covered by

routine and preventive maintenance and which is required to be carried out as a result

of sudden failure/breakdown of that particular component or equipment while the plant is

running. The supplier shall be responsible to carry out breakdown maintenance of each

and every component of the power plant and he shall provide the required manpower,

materials, consumables, components or equipment etc. for breakdown maintenance at

his own cost irrespective of the reasons of the breakdown/failure.

Capital maintenance shall mean the major overhaul of any component or equipment of

the power plant which is not covered by routine, preventive and breakdown

maintenance which may become necessary on account of excessive wear & tear, aging,

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which needs repair/replacement. The capital maintenance of power plant and all civil

structures shall normally be planned to be carried out on an annual basis. For this

purpose a joint inspection by the supplier and purchaser shall be carried out of all the

major components of the power plant, about two months in advance of the annual

maintenance period, in order to ascertain as to which components of the power plant

require capital maintenance. In this regard the decision of the purchaser will be final and

binding. However, if the condition of any plant and component warrants its capital

maintenance at any other time, a joint inspection of the purchaser and supplier shall be

carried out immediately on occurrence of such situation and capital maintenance shall be

carried out by arranging the shutdown of the plant/part of the plant, if required, in

consultation with concerned authorities. The decision of the purchaser shall be final and

binding.

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Annexure I

List of Min. Spare Parts

Sno Item Description Quantity ( nos)1 SPV Module 0.5% of total numbers of modules 2 Power Conditioning Systems Necessary spares for 10 years of

operation with min. 2 sets of spares to be kept at plant site. OEM spares list must be got approved from the purchaser.

3 Miscellaneous (cable, fuses/HRC fuses, screws, soldering material, wall grips, lugs etc please specify)

Required for 10 years of operation

Tools and Measuring instruments

Sno Item Description Quantity ( nos)1 Digital Multimeter and clamp

meter (Fluke / Motvane)4 no. each

2 Megger for earth testing 1 no. 3 Screw Driver set (Taparia /

Eastman)4 sets

4 Spanner set (Taparia / Eastman) 4 sets 5 Pointed Soldering Iron (Philips) 46. Aluminium ladders 2 nos.7. Motorised Lawn Mower 1 nos.8. Wide Angle Pole Mounted with

motorized base IP based surveillance cameras for remote monitoring connected through Broadband internet

2 nos.

Note: Bidders must get the list of spares being supplied approved from the purchaser before supply.

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Annexure-II

UNDERTAKING TO BE FURNISHED BY BIDDERS

We, M/S ……………………………………………………………………………… with

Registered office at …………………………………………………………………

undertake to ensure generation of electrical energy from the Solar Power Plant of

1MWp, 1.5MWp, 2.0MWp, 2.5MWp to be installed by us at any Village and any

district of Punjabs per the details / technical specifications given in Tender

document. We have calculated the quantum of electricity likely to be generated with

the Solar Data for any site as per the attached yield report. We also confirm that we

have inspected the project site also.

Authorized Signatory Name of the Company with stamp

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