TS398 Insulator Standards as Per Chattisgarh Board

7/29/2019 TS398 Insulator Standards as Per Chattisgarh Board

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OFFICE OF THE EXECUTIVE DIRECTOR(STORES & PURCHASE)

PHONE : 0771- 2574972, 2574968,2574992,2574980 FAX :0771-2574961

EMAIL [email protected]

4th

FLOOR, VIDHYUT SEWA BHAVAN

CHHATTISGARH STATE POWER DISTRIBUTION COMPANY

LIMITED,DANGANIA

RAIPUR

CHHATTISGARH 492 013

TENDER SPECIFICATION NO. TS- 02-03/ ED (S&P) /398

DUE FOR OPENING ON 16-10-2012

FOR SUPPLY OF 11 KV PIN INSULATOR(PORCELAIN & POLYMER), 33 KV PIN INSULATOR

(PORCELAIN), 11 KV 45 KN DISC INSULATOR(POLYMER) & 33 KV POLYMER (COMPOSITE)

DISC INSULATOR

PRICE : Rs.750/-Rs. 100/- (Postal Charges)
mailto:%E6%A5%[email protected]:%E6%A5%[email protected]:%E6%A5%[email protected]:%E6%A5%[email protected]


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O/o ED (S&P): CSPDCL: Raipur - - TS NO.02-03/ ED (S&P)/398DUE ON 16-10-2012

1

CHHATTISGARH STATE POWER DISTRIBUTION CO. LTD.(A Government of Chhattisgarh Undertaking & A Successor Company of CSEB)

OFFICE OF THE EXECUTIVE DIRECTOR (S&P)4

THFLOOR, VIDHYUT SEVA BHAVAN, DANGANIYA, RAIPUR (C.G.)-492 013

Phone No.0771-2574972, 2574968,2574992, 2574980; FAX: 0771-2574961

TENDER SPECIFICATION NO.02-03/ED(S&P)/398 DUE ON 16-10-2012ITEM: 11 KV PIN INSULATOR (PORCELAIN & POLYMER), 33 KV PIN INSULATOR

(PORCELAIN), 11 KV 45 KN DISC INSULATOR (POLYMER) & 33 KV POLYMER(COMPOSITE) DISC INSULATOR

INDEXS.No. Particulars Page01. Tender Notice 0202 Tender form 0303. Annexure-I

Special conditions/instructions to the Bidders/Tenderers 04 -0904. Schedule-I (Price & Quantity) 10-1105. Schedule-II (A) -General Particulars and Technical Specification 12-15

Of11 KV & 33 KV Pin Porcelain Insulators

06. Drawing & Dimensions of 11 KV Pin Insulators 16

07. Schedule-II (B)-General Particulars and Technical Specification 17-20Of11 KV 45 KN Porcelain Disc Insulators

08. Schedule-II (C)-General Particulars and Technical Specification 21-31Of11 KV & 33 KV Polymer Pin & Disc Insulators

09. Annexure-A (Tests on Insulator Unit) 3210. SCHEDULE-III (A)-Guaranteed Technical Particulars of 11 KV & 33

33 KV Pin Insulator (Porcelain) & 11 KV 45 KN Disc (Porcelain) Insulator(T&C Type)

11. SCHEDULE-III (B)- Guaranteed Technical Particulars of 11 KV & 34-3533 KV Pin Insulator (Polymer) & 11 KV 45 KN Disc (Polymer) Insulator& 33 KV POLYMER (COMPOSITE) DISC INSULATOR

12. Schedule-IV - UNDERTAKING 36

13. Schedule V

Quantity Schedule (unprised) 37PRINTED BOOKLET CONTAINING FOLLOWINGS

i. ANNEXURE-A General Instructions to Bidders/ Tenderers. i-ixii. ANNEXURE-B General Terms and Conditions of Purchase x-xx

iii. ANNEXURE-C List of Consignee / Area Stores & xxi-xxiiSenior /Regional Accounts Officers.

iv. ANNEXURE-D List of Scheduled Banks. xxiiiv. ANNEXURE-E

Check List for Essential Documents to be submitted xxiv-xxvvi. SCHEDULE-A : Questionnaire

Section-(i) General Information xxvii-xxviiiSection-(ii) Commercial Information xxix-xxxiii

Section-(iii) Technical Information xxxiv-xxxvvii. SCHEDULE-B

Section-(i) Performance and Past Experience xxxvi

Section-(ii) Commercial Deviation xxxviiSection-(iii) Technical Deviation xxxviii

Remarks :-In the Printed Booklet wherever mentioned the word CSPHCL may please be

read as CSPDCL . Further, wherever mentioned Assistant Manager (CAU), CSPHCL

may please be read as Manager (CAU), CSPDCL,Raipur.

In partial modification to the clause-12.4 of Annexure B, bills for payment

upto Rs. 2,50,000/- should be submitted to concerned Assistant Manager / Sr. Account

officer / Regional Account officer. Bills for value more than Rs. 2,50,000/- should be

submitted to the D.G.M. (Fin), CSPDCL, Raipur.

(Note:- Only Price Bid (Schedule-I) should be detached and submitted in a separate envelope asPart-III. Remaining of the complete tender document along with enclosures should be submittedas Part-II. Tenderer should put his signature with seal on each page of the tender documentincluding printed booklet and should fill in all requisite information in Schedules.)


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CHHATTISGARH STATE POWER DISTRIBUTION CO. LTD.(A Government of Chhattisgarh Undertaking)

(A Successor Company of CSEB)OFFICE OF THE EXECUTIVE DIRECTOR(S&P)

4THFLOOR, VIDHYUT SEVA BHAVAN,

DANGANIYA, RAIPUR (C.G.)-492 013Phone No.0771-2574972, 2574992, 2574980 ; FAX: 0771-2574961

DD/Money Receipt No.......Tender issued to M/s... ..

TENDER FORM

The undersigned hereby tender and offer (subject to the Companysconditions of tendering) the C.S. Power Distribution Company to 11 KV PININSULATOR (PORCELAIN & POLYMER) 33 KV PIN INSULATOR (PORCELAIN),11 KV 45 KN DISC INSULATOR (POLYMER) & 33 KV POLYMER (COMPOSITE)DISC INSULATORattached to tender document No. 02-03/ED(S&P)/398 and itsenclosure and in Schedules to the side Details of Technical Particular copies ofwhich are annexed here to and which under the terms thereof are to be supplied

and to perform and observe the provisions and agreements or the part of thecontract contained in or reasonable to be referred from the said tender documentsfor the sums and at the rates sets out in Schedule-I annexed here to.

The questionnaire enclosed with these tender documents has been fullyanswered in full, the answer to various question may be taken so as to beadvantageous to the Company (unless contrary is mentioned in the body of thetender).

1. Last date of sale of tender 15-10-2012

2. Last date & time for submission of tender 16-10-2012 upto 3.00 pm

3. Date & time for opening of tender 16-10-2012 at 3.30 pm

Date the . day of .

TENDERERS SIGNATURE(With Seal)

(This tender Form in Original must be submitted with the offer in envelope of Part-II

i.e. Techno-commercial Bid)


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ANNEXURE-ISPECIAL INSTRUCTION TO BIDDERS / TENDERERS

(Tenderer must read following instructions carefully before filling in tender form)

IMPORTANT:(i) Except as otherwise provided in any subsequent

modification/LOI/Order,the provision of the Annexure shall have effect

notwithstanding anything inconsistent therewith contained in any otherSchedule/Annexuare/Clause/ Terms/Condition of this tender document.

(ii) If the tender document is downloaded by the bidder throughwebsite of CSPDCL, the tender fees Rs.750/-is to be submitted in form ofDD/Pay Order in an envelope super scribed main envelope.

(iii) It may please be noted that the firm having pending litigationwith CSPDCL will not be eligible for participation in Tendering processand offers of such firms will not be considered for opening

Date of submission of tender is 16-10-2012up to 3.00 PM and date of opening oftender is 16-10-2012 at 3.30 PM in the Office of Executive Director (S&P),CSPDCL, Raipur.

1. EARNEST MONEY DEPOSIT:-

Earnest money deposit shall be Rs. 33,967=00 (Rs.Thirty ThreeThousand Nine Hundred Sixty Seven) only. No offer shall be acceptedwithout earnest money deposit unless exempted by the Company. If onopening of the tender, it is revealed that EMD amount is inadequate / anyother discrepancy is noticed, the tender shall be rejected and technical /commercial bids and price bid shall not be opened. No interest shall be paid

on EMD.2. Pre-Qualification requirement :-(i) (a) The tenderer firm should have minimum average annual turn over of Rs.

51.00 Lacs for the last 2 years i.e. 2010-11 & 2011-12 for this tender. (TheBidders should submit at least two copies of their profit and lossaccount and balance sheet for the last two years including Turnoverduly attested by notary).(b) It is obligatory to the tenderers to offer at least 25% of tenderquantity of material quoted otherwise their offer shall be rejected.

(ii) The tenderer should be manufacturer and having experience of minimumone year in supplying Porcelain / Polymer insulators to other SEB /

Electricity Utilities.However, the state units of CG State not having theexperience of minimum one year will be considered for trial order only ifcomplying the other requirement and found eligible.

(iii) The tenderer should submit all the required type test from Govt /Govt.approved / NABL accredited laboratory as per relevant IS / IEC notmore than 5 years old from the date of opening of the tender, indicated intechnical specification.

3. Only FIRM rate is to be quoted. No Price Variation shall be admissible.

4. Price bid has to be submitted in prescribed format only as perSchedule-I inclusive of all the charges / levies / taxes i.e. packing,

forwarding, freight, sales tax, excise duty octroi or other taxes / levies,commercial tax and any other charges etc. No price variation shall beallowed / accepted.


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5. Also, please note that Taxes and duties shall be paid extra againstproduction of documentary evidence. However, in case where bidderspecifies present rate of statutory levy at a lower rate than themaximum of normal tax-structure, any upward variations in statutorylevies upto maximum of applicable rates shall have to be born by thebidder.

Importantly, in case a bidder stipulates upward revision ofstatutory levy (ED,ST etc.) to the CSPDCL account and specifiespresent rate of statutory levy at a lower rate than the maximum ofnormal tax-structure of levy applicable for the product or as evidentfrom other bids received in the tender; his quoted prices will attract aloading considering maximum slab of normal rate of levy applicable.For example, a bidder stipulates upward revision of CST to theCSPDCL account and specifies present rate of CST @ 1%.Whereas,themaximum limit of normal rate of CST is 2% for tendered item.

Therefore, loading for balance i.e. 2-1 = 1% CST will be done on theprice quoted by that bidder. Also any upward variations in statutorylevies beyond original contractual period will have to be born by thebidders.

6 The rates quoted in the price bid will be loaded with the prevailing rate ofentry tax for State / Out-side State Units to ascertain the lowest rate i.e. thelowest landed cost and the firm will be considered the L-1 bidder based onsuch lowest landed cost, for all purposes. However, while placing the orderto L-1 bidder, the rate offered should be after de loading the entry tax, asthe amount of entry tax is to be paid by CSPDCL. For placing order whereas

on firms other than L-1, i.e. for counter offer the rate offered will be such thatthe total landed cost including entry tax @ 1% shall be same for within andoutside State Units.

7. The notary attested copies of all the desired type test certificates from theGovt / Govt.approved/ NABL accredited laboratory alongwith thedrawing/design of sample tested, for 11 KV PIN INSULATOR (PORCELAIN& POLYMER) 33 KV PIN INSULATOR (PORCELAIN), 11 KV 45 KN DISCINSULATOR (POLYMER) & 33 KV POLYMER (COMPOSITE) DISCINSULATOR (as prescribed in with its latest amendment as per relevant IS /IEC) shall be submitted along with the tender, failing which the tender will be

liable for rejection .The type test certificates shall not be 5 years old from thedate of opening of the tender. If the Type test report found more than 5years old, the offer would be liable for rejection. Type test reports of otherlaboratories shall also be liable for rejection.

8. Only commercial and technical bids shall be opened on date of opening oftender. The price bid shall be opened on any subsequent date for whichintimation shall be given separately.

9 POOL RATE / CARTEL:-Formation of tenderers cartel is strictly prohibited. Cartel includes

an association of sellers, distributors, traders or service providers who byagreement amongst themselves, limit, control or attempt to control theproduction, distribution ,sale or price of or trade in goods or provision of


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services. Here, agreement includes any arrangement or understanding oraction, whether or not is formal or in writing.

Quoting same rates i.e. pool rate is not acceptable. In case thesame rate is found to be quoted by more than two bidders, offers of all suchbidders shall be out rightly rejected. However, if rates of two bidders arefound to be same, quantity of orders to be placed on them will be reduce tohalf of the quantity a bidder is entitled to be allocated by virtue of theircommon rank. But, in case of multi-item tender, if rates of even two biddersfor more than one item are found to be same, it will be considered asdeliberate cartel & offers of both the bidders shall be rejected. Accordingly,all the bidders are advised to quote their own individual & most competitiverates.

Rates received in a tender will be minutely scrutinized to find outas to whether some or all bidders have entered into any such agreement.If Company is satisfied with the conclusion that some or all bidders haveformed a Cartel, offers of all such bidders shall be rejected.

10. No technical and commercial deviation shall be considered / accepted, fromthe specified technical / commercial specification, enclosed in the tenderdocuments. Any deviation from commercial / technical specification willresult liable for rejection of the tender.

11. The tender offers of those tenderers, who do not agree to CSPDCLspayment terms, security deposit clause, penalty clause, performanceguarantee clause, submission of all type test certificates clause andtechnical specification shall be liable for rejection.

12. DRAWING AND LITERATURE:The tenderer shall submit compulsorily the detailed drawing of the

offered material conforming to tender specification. The offers receivedwithout drawing shall not be considered. The drawing of the materialsubmitted along with the offer shall be considered for the purpose ofevaluation of offer only. However, the successful tenderer on whom ordershall be placed shall have to again submit the detailed drawing of orderedmaterials as perpurchasers requirement / suggestion before placement oforder for further scrutiny and approval.

13. C.S. Power Distribution Company Ltd. is authorized under Sales Tax Act

bearing Registration No. 22711104373 to avail the benefit of Concessionalrate of Commercial Tax / Central Sales Tax. For this purpose, necessarydeclaration formC/D, as the case may be, shall be issued after receipt ofmaterial at destination. This shall be kept in mind by the tenderer whilequoting the competitive rates in format Schedule-I i.e. Price Bid.

14. The C.S. Power Distribution Company Ltd. here after referred asCOMPANY reserves the right to reject any or all tenders or accept anytender in full or part, considered advantageous to the C.S. PowerDistribution Company Ltd., whether, it is lowest or not without assigning anyreason whatsoever.

15. The tenderer will have to supply the materials as per approved drawing anddesign and accordingly they should quote the rates.


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16. The offers should be fully technically acceptable i.e. offer should meet allthe constructional features & technical requirements as specified in thetechnical specification Schedule-II & III.

17. The inspection of works site of Bidders may be conducted by a committeecomprising of senior officers of the Company to ensure that the firm has gotthe required infrastructure for manufacturing good quality INSULATORSand to examine technical acceptability of the Bidders to manufacture qualityInsulators by complying with quality assurance plan as prescribed in thetechnical specification of the tender. However, along with offer, theinformation about manufacturing facilities and testing facilities available besubmitted.

18. The tenderers should be manufacturer and having experience of minimumone year in supplying 11 KV PIN INSULATOR (PORCELAIN & POLYMER)

33 KV PIN INSULATOR (PORCELAIN), 11 KV 45 KN DISC INSULATOR(POLYMER) & 33 KV POLYMER (COMPOSITE) DISC INSULATOR toother electricity Companys / Electric Utility etc. However the state units ofCG State not having the experience of minimum one year will be consideredfor trial order only if complying the other requirement and found eligible. Forthis purpose the tenderer / firm will be required to submit the proof tosubstantiate this condition like copy of orders / performance certificatesattested by Notary.

19. The bidders are advised to furnish following documents also: -i) Latest partnership deed / ownership deed proof or memorandum of

articles of the firm as applicable.ii) Power of Attorney to sign the tender documents and all correspondence

after placement of the order.

20. PRICE REDUCTION :-In case price of the 11 KV PIN INSULATOR (PORCELAIN &

POLYMER) 33 KV PIN INSULATOR (PORCELAIN), 11 KV 45 KN DISCINSULATOR (POLYMER) & 33 KV POLYMER (COMPOSITE) DISCINSULATOR happens to be lower in our next tender, the same shall bemade applicable for the balance quantity with effect from the date ofopening of Price Bid of new tender.

21. The photocopy of NSIC / SSI Permanent Registration should be dulyattested by the competent authority from the Industries Departmentnot below to the rank of General Manager / Manager of IndustriesDeptt. or Public Notary must be submitted with the offer to know theexperience and production capacity. The registration certificate shouldbe valid for the items on tender on due date of opening of commercialand technical bid.

22. Each page of the tender and its enclosures must be signed by the tendererwith firm's seal at the bottom space.

23. The Certificate stated in page 15shall have to be mentioned over the mainenvelope duly signed by the tenders and with the seal of company.


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24. INSPECTION BEFORE DISPATCH: -Unless the inspection is waived, the Companys inspecting

officer/representative at your works shall conduct pre-dispatch inspection ofthe materials. The procedure for arranging inspection shall be as perrelevant ISS and its latest amendment & IEC.

25. INSTRUCTIONS FOR PREPARATION OF BIDS: -

a) Bids shall be complete in all respect and shall be submitted with requisiteinformation and Annexure. It shall be free from any ambiguity, cutting oroverwriting. The persons who sign the Bids must initial any such correction.

b) An authorized representative of the firm shall initial all pages of the Bid.

c) For preparation of Bids, Bidders are expected to examine the biddingdocuments in detail. Discrepancies in providing the information may resultin rejection of the Bid.

d) All the pages shall be numbered at bottom on right side corner.

e) All the pages shall be numbered from bottom to top serially.

f) The index shall be prepared in sequence (strictly in the prescribedproforma as mentioned in this tender document) of documents whichare required to submit along with offer like schedules of commercialinformation, commercial & technical deviations, experiencecertificate, Sales Tax clearance certificate, exemption from any tax /duties if any, TYPE TEST REPORTS, undertaking against FIRM pricewhich are essential to submit to ascertain eligibility of your offer.

g) The Technical & Commercial Bid' Part II (All schedules shall be submittedexactly in same proforma) and Price Bid" as part section - III and abstractof position of each type test and other desired certificate where theseall are placed in file, should be furnished in offer.

26. ACCEPTANCE OF TENDER:-

The total quantity of tender/ order which are to be placed may bedistributed to two eligible firms in ratio 60:40 at the lowest landed cost.

27. PERFORMANCE GUARANTEE:-

The 11 KV PIN INSULATOR (PORCELAIN & POLYMER) 33 KV PININSULATOR (PORCELAIN), 11 KV 45 KN DISC INSULATOR (POLYMER)& 33 KV POLYMER (COMPOSITE) DISC INSULATOR shall beguaranteed for 30 months from date of receipt of material. Any of the goodsfound to be defective in materials or workmanship or develops defectsduring service; they will have to be replaced by the supplier, free of allcharges. The suppliers will make all necessary arrangements on theseaccounts.


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28. DELIVERY:-

Normally the supply shall be commenced within one month &supplies of full quantity to be completed within one month, however theCompany reserve the right to defer or advance the delivery depending onthe field requirement.

30. SECURITY DEPOSIT:-

Please note that the Security Deposit will be applicable as per clause15 of Annexure B (Page XV) of printed booklet .However please note thatfor all state SSI units registered with the Industries Department as C.G.shall be required to pay Security Deposit for 5% value of order subject tomaximum of Rs. 20,000/- in cash or D.D. This concession is for such SSIunit of Chhattisgarh who are doing business upto Rs. 50.00 (Fifty) Lacsannually only .For State SSI unit ,who are having annual business with theCompany for more than Rs. 50.00 lacs, shall have to deposit 7.5% of value

of order subject to maximum of Rs. 10.00 lacs. No interest shall be paid onSD amount.

31. Clause 12.4 of Annexure B (General Terms & Conditions ofPurchase) of printed booklet may please be read as below:-

For payment the invoice in triplicate with relevant documents suchas Material Receipt in good condition etc. should be submitted to theDeputy General Manager (F&A), CSPDCL, Raipur or value more thanRs.2,50,000/-. In case amount is less than 2,50,000/- the bill should besubmitted to concerned Assistant Manager/Regional Asstt. Manager.

SUPERINTENDING ENGINEER (P)-IVO/o E.D. (S&P), CSPDCL: RAIPUR


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SCHEDULEI

PRICE AND QUANTITY(TO BE KEPT IN THE ENVELOPE PARTIII PRICE BID)

S.No.

Particulars Qty.tendered.

( in Nos.)

Qty.Offered

(in Nos.)

Per UnitEx-WorksPriceinclusiveof packing&forwardingcharges

( in Rs.)

Per UnitExciseDuty in% and

( in Rs.)

PerUnitSalesTax in%and

( inRs.)

AnyOtherTax in%and

( inRs.)

Per UnitFreightcharges

( in Rs.)

Total FORdestination unitprice anywherein Chhattisgarhinclusive of alltaxes & dutiesbut exclusive ofEntry tax

(in Rs.)

1 2 3 4 5 6 7 8 9 10= (5+6+7+8+9)

1. 11 KV PinInsulator

(i) Porcelain 3552

(ii) Polymer 2761

2. 33 KV PinInsulatorPorcelain

8557

3. 11 KV 45 KN DiscInsulatorPOLYMER

8757


751

Note:

1. The price quoted in coloumn-10 shall be FIRM and inclusive of all taxes, duties andpacking, forwarding & freight charges but exclusive of Entry Tax.

2. Entry Tax as applicable shall be payable by CSPDCL. At present the applicable rate ofentry tax @ 1% for State unit & outside State units. This shall be kept in mind.

3. C.S. POWER DISTRIBUTION COMPANY LTD. is registered for availing the benefitof concessional rate of Sales/Commercial Tax. For the purpose, necessarydeclaration form C/D, as the case may be, shall be issued after receipt ofmaterial at destination. This shall be kept in mind by the tenderer, while quoting

the competitive prices.4. The offer with the rates given in any form / Performa, other than that mentioned aboveshall be liable for rejection.

5. The price shall be indicated as per unit basis only in words and figures (rate in wordsmay also be mentioned in Column No.10 of Price Bid).

6. Rate in various tapering steps shall not be considered and hence supply shall beindicated by a singular figure only.

7. The Column No. 8 Any other tax should be specific regarding its applicability i.e. it isleviable on what amount and what percentage.

8. In case of exemption / non-applicability of any duty or tax etc. documentary evidence tobe furnished in support.

(Continued to next page)


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9. Workable cost schedule: Item-wise splitting for the arrived price rate in the prescribedformat below is compulsorily required with the price bid separately (Relevant documents,if any, may be demanded as basis of workable price arrived).

SIGNATURE OF TENDERER WITH SEAL

NAMEDESTINATION & SEAL OF THE FIRM

S.No.

11 KV PIN INSULATOR(PORCELAIN & POLYMER)

33 KV PIN INSULATOR(PORCELAIN), 11 KV 45 KN

DISC INSULATOR(POLYMER) & 33 KV

POLYMER (COMPOSITE)

DISC INSULATOR

QuantityPer No.

Unit Rate(Rs.)

Amount(Rs.)

1. Raw material

1(a)

1(b)

1(c)

1(d)

Sub-Total (1)

2. ElectricityCharges.

3. Water Charges

4. Labour Charges5. Charges to other staff, if any(please specify).

6. Any other charges, if any(please specify).

7 Total Price

SIGNATURE OF TENDERERNAMEDESIGNATION


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SCHEDULE-II (A)

GENERAL PARTICULARS AND TECHNICAL SPECIFICATION OF 11

KV & 33 KV PORCELAIN PIN INSULATOR

1. SCOPE:-

This specification covers the design, manufacture, testing, supply anddelivery of 11 KV and 33 KV Porcelain Pin Insulators for use on 11 KV and33 KV overhead Power Lines.

2. STANDAND:-Except where they conflict with specific requirement in the

specification, the Pin Insulators shall comply with the Indian StandardSpecification IS:731-1971 and its amendments from time to time.

The insulator conforming to any other internationally acceptedstandard which ensures equal or better quality than the standard mentionedabove would also be acceptable.

Where the material is offered according to the internationalstandards, an English version of the specifications shall be attached with thetender.

3. ATMOSPHERIC CONDITIONS:-

3.1 The material offered shall be suitable for operation under the climatic

conditions indicated in Clause 31 of Annexure II General Terms andconditions of purchase appended with this Tender Specification.

3.2 Reference atmospheric conditions at which insulators characteristics shallbe expressed for the purpose of comparison shall:-

Ambient Temperature - 20 Degree CentigradeBarometric Pressure - 1013 Milli bars

Absolute Humidity -11 gms of water per cubic metercorresponding to 63 percent relativehumidity at 20 0C

Note: - A pressure of 1013 millibars is equivalent to a pressure of 750 mmof Mercury at 0 degree centigrade.

3.3 Tests for the purpose of this standard shall preferably be carried out underconditions of temperature and humidity specified in IS:196-1966(i.e. at atemperature of 27+ 2 degree centigrade and relative humidity of 66+2percent) and at the prevailing atmospheric pressure. When this is notpossible, test may be carried out under conditions naturally obtained at thetime of the test. The barometric pressure, air temperature and humidityshall be recorded for the purpose of correction.

Corrections of test voltage for atmospheric conditions is given inAppendix A of IS:731-1971.


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4. The Thimble for 11 KV Pin Insulator should be suitable for use withGalvanised Steel Pins conforming to reference S-165 of IS: 2486 (Part-II) of1974 with shank length 150 mm which is provided with a small steel head.Similarly, the thimble of 33 KV Pin Insulator should be suitable for use with 33KV Galvanised steel Pins conforming to reference I-300-N of fig. 6 withshank length of 150 mm and with large head of ISS-2486 (Part-II) of 1974.

5. INSULATOR CHARACTERISTICS:-The insulator shall have the electrical and mechanical

characteristics which are given below:-The test voltage of insulator shall be as under:-

11KV PIN 33KV PIN

INSULATOR INSULATOR

1. Highest system voltage 12KV (rms) 36 KV (rms)2. Wet Power frequency 35 KV (rms) 75 KV (rms)

withstand voltage testfor one minute

3. Visible discharge voltage 9 KV (rms) 27 KV (rms)4. Power frequency puncture 105 KV (rms) 180 KV (rms)

withstand voltage5. Impulse withstand voltage 75 KV(peak) 170 KV (peak)

(In the above standards, power frequency voltage is expressed as peakvalues divided by 2 and impulse voltage is expressed as peak value).

6. The withstand and flash over voltage are referred to the reference

atmospheric conditions.

7. Mechanical Loads Minimum Failing Loadsi. 11 KV Pin Insulator 5 KNii. 33 KV Pin Insulator 10 KN

8. DIMENSIONS AND CREEPAGE DISTANCE:-The insulators shall have the following dimensions and minimum creepage

distance for a moderately polluted atmosphere:-

Particulars 11 KV Pin Insulator 33 KV Pin Insulator

(A) Dimensionsi. Height 130 MM 210 MM

ii. Diameter 125 MM 275 MM

(B) Creepage Distance 230 MM 580 MM

9. TESTS:-The insulator shall comply with the following tests as per IS-731- 1971.

9.1 TYPE TESTS:-The following constitute the type tests:-a. Visual examinationb. Verification of dimensions


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c. Visible discharge testd. Impulse withstand voltage teste. Wet power frequency withstand voltage testf. Temperature cycle testg. Mechanical failing load testh. Puncture testi. Porosity test

Type test certificate from recognized Govt. lab for the tests carried out onprototype of same specifications shall be enclosed with the tender. The typetest certificates shall not be more then 5 years old from the date of opening oftender.

9.2 ROUTINE TESTS:-

The following shall be carried out as the routine tests:-

a. Visual examinationb. Electrical Routine testsc. Mechanical Routine tests

9.3 ACCEPTANCE TESTS:-The test samples after having withstood the routine tests shall be

subjected to the following acceptance tests in the order indicated below:-a. Verification of dimensionsb. Temperature cycle testc. Mechanical failing load testd. Puncture test

e. Porosity testf. Galvanising test

9.4 Tolerance in insulator dimensions shall be as per the relevant IndianStandard i.e. (0.04d+1.5) mm when d 300 mm and where d is thedimension in mm.

10. MARKING:-Each insulator shall be legibly and indelibly marked to show the

followings:-a. Name and trade mark of manufacturer

b. Month and year of manufacturec. Minimum failing load in newtonsd. Country of manufacture

Marking on porcelain shall be printed / engraved and shall beapplied before firing.

11. PACKING:-

All insulators shall be packed in wooden crates suitable for easy butrough handling and acceptable for rail and road transport.


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12. STANDARDISATION OF DIMENSIONS OF TOP AND NECK OF 11 KVPIN INSULATOR:-

Please note that now-a-days Company is using preformed ties forbinding conductor with the Pin Insulator instead of conventional method ofbinding by Aluminium binding wire and tape.The design of the preformedties depends upon the dimensions of top and neck of 11 KV Pin Insulator.For proper gripping of the conductor with the help of preformed fittings it hasbecome necessary to standardise the dimensions of the insulator top andneck. Accordingly, a drawing 051-32/CSEB/1 dt.1.9.2001, which indicatesthe standardised dimensions of top and neck of 11 KV Pin Insulator, isenclosed with Tender Specification. This drawing has been approved byREC, New Delhi, therefore, the tenderers are advised to offer materialbased on this drawing.



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DRAWING & DIMENSIONS OF 11 KV PIN INSULATORS


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S C H E D U L EI I (B)

GENERAL PARTICULARS AND TECHICAL SPECIFICATION OF 11KV DISCINSULATOR (PORCELAIN) (T&C TYPE)

1. SCOPE:-This specification covers the design, manufacture, testing, supply and

delivery of porcelain Disc Insulator for use on 11 KV and 33 KV overhead powerlines.

2. STANDARD:-Except where they conflict with specific requirement in the specification,

the Disc Insulator shall comply with the Indian Standard Specification IS:731/1971 and its amendment from time to time.

The insulator conforming to any other internationally accepted standard

which ensures equal or better quality than the above standard would also beacceptable.Where the material is offered according to the international standards, an

English version of the specification shall be attached with the tender.

3. ATMOSPHERIC CONDITIONS:-

3.1 The material offered shall be suitable for operation under the climaticconditions indicated in Clause 31 of Annexure-II General Terms and Conditionsof purchase appended with this tender specification.

3.2 Reference atmospheric conditions at which insulator characteristics shallbe expressed for the purpose of comparison shall be:-

Ambient Temperature - 20 Degree CentigradeBarometric Pressure - 1013 millibarsAbsolute Humidity - 11 gms of water per cubic

Meter corresponding to 63%Relative humidity at 20 0C

Note:-A pressure of 1013 millibars is equivalent to a pressure of 750 mm ofMercury at 0 degree centigrade.

3.3 Tests for the purpose of this standard shall preferably be carried out underconditions of temperature and humidity specified in IS:196-1966 (i.e. at atemperature of 27+2 degree centigrade and relative humidity of 66+2 percent)and at the prevailing atmospheric pressure. When this is not possible, test maybe carried out under conditions naturally obtained at the time of the test. Thebarometric pressure, air temperature and humidity shall be recorded for thepurpose of correction.

Corrections of test voltage for atmospheric conditions is given inAppendix A of IS: 731-1971.

4. GENERAL REQUIREMENTS:-The porcelain shall be sound free from defects, thoroughly vitrified and

smoothly glazed.


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4.1 Unless otherwise specified, the glaze shall be brown in colour.The glazeshall cover all the porcelain parts of the insulator except those areas which serveas supports during firing or are left unglazed for the purpose of assembly.

4.2 The design of insulator shall be such that stresses due to expansion andcontraction in any part of the insulator shall not lead to deterioration. Theporcelain shall not engage directly with hard metal.

4.3 Cement used in the construction of the insulator shall not cause fractureby expansion or lossening by contraction and proper care shall be taken to locatethe individual parts correctly during cementing. The cement shall not give rise tochemical reaction with metal fittings and its thickness shall be as unifom aspossible.

5. TYPE OF INSULATOR:-

The insulator shall be of type B according to its construction which isdefined hereunder:-Type B:-An insulator or an insulator unit in which the length of the shortestpuncture path through solid insulating material is less than half the length of theshortest flash over path through air outside the insulator.

6. INSULATOR CHARACTERISTICS:-

6.1 The insulator shall have the electrical and mechanical characteristicswhich are given below:-

The test voltage of insulator shall be as under:-Disc Insulator

1. Highest system voltage 12 KV (rms)2. Wet power frequency withstand 35 KV (rms)

voltage for one minute3. Visible discharge voltage 9 KV(rms)4. Power frequency puncture withstand voltage 105 KV (rms)5. Impulse withstand voltage 75 KV(peak)

6.2 In this standard, power frequency voltage are expressed as peak valuesdivided by 2 and impulse voltage are expressed as peak value.

6.3 The withstand and flash over voltage are referred to the referenceatmospheric conditions.

6.4 Minimum Failing Load 45 KN

7. DIMENSIONS:-

7.1 The insulator shall have the following dimensions:-Diameter - 254 mmHeight -146 mm (Hole to Hole)


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7.2 CREEPAGE DISTANCE:-The insulator shall have minimum 320 mm creepage distance for a heavilypolluted atmosphere.

8. TESTS:-The insulators shall comply with the following tests as per IS:731-

1971 with its latest amendments.

8.1 TYPE TESTS:- The following constitute the type tests :a. Visual examinationb. Verification of dimensionsc. Visible discharge testd. Impulse voltage withstand teste. Wet power frequency withstand voltage testf. Temperature cycle testg. Electro-Mechanical failing load test

h. Puncture testi. Porosity testj. Galvanizing test.

Type test certificate from recognized Govt. lab for the tests carriedout on prototype of same specifications shall be enclosed with the tenderfor each type test failing which the tenders are liable for rejection. Thetype test certificates shall not be more than 5 years old from the date ofopening of tender.

8.2 ROUTINE TESTS:-

The following shall be carried out as the routine tests:-a. Visual examinationb. Electrical Routine testsc. Mechanical Routine tests

8.3 ACCEPTANCE TESTS:-

Acceptance of samples after having withstood the routine tests shallbe subjected to the following acceptance tests in the order indicatedbelow:-

a. Verification of dimensions

b. Temperature cycle testc. Electro Mechanical failing load testd. Puncture teste. Porosity testf. Galvanizing test

8.4 Tolerance in insulator dimensions shall be as per the relevant IndianStandard, i.e. (o.04d+1.5)mm when d300 mm and where d is thedimension in mm.

9. MARKING:-

Each insulator shall be legibly and indelibly marked to show thefollowings:-


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a. Name and trade mark of manufacturerb. Month and year of manufacturec. Minimum failing load in new tonsd. Country of manufacture

Marking of porcelain shall be printed / engraved and shall be appliedbefore firing.

10. PACKING:-

All insulators shall be packed in wooden crates suitable for easy but roughhandling and acceptable for rail and road transport.

SUPERINTENDING ENGINEER (P)-IV

O/o E.D. (S&P), CSPDCL: RAIPUR


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SCHEDULE-II (C)

GENERAL PARTICULARS ANDTECHNICAL SPECIFICATION FORCOMPOSITE PIN AND DISC INSULATORS FOR USE IN 11 kV AND 33kV

SYSTEM

1. SCOPE:-This specification covers design, manufacture, testing and supply ofcomposite Insulators for use in the 11 kV / 33 kV overhead transmission linesand substations.The composite Insulators shall be of the following type:

i) Long rod Insulators for conductors in tension application at angle / cut points.The Insulators shall be of tongue & Clevis type.

ii) Long rod type Pin Insulator indented to be mounted rigidly on a supporting

structure to support following size of conductor:-(a) For 11 kV AAA/ACSR Rabbit(b) For 33 kV AAA/ACSR Dog

2. APPLICABLE STANDARDS:-

2.1 Standards:-Following Indian / International Standards, which shall mean latest revision,with amendments/changes adopted and published, unless specificallystated otherwise in the Specification, shall be referred while accessingconformity of Insulators with these specifications.

SN

Pin Insulator Title Disc InsulatorIndian

StandardInternational

StandardIndian

StandardInternatio nal

Standard

1-

IEC:61109 Definition, test methods andacceptance criteria for CompositeInsulators for A.C. overhead linesabove 1000V.

- IEC:61109

2 IS:2071 IEC:60060-1 Methods of High Voltage Testing. IS:2071 IEC:60060-1

3 IS:731 IEC:60383 Porcelain Insulators for overheadpower lines with a nominalvoltage greater than 1000 V.

- -

4 IS:2486 IEC:60120IEC:60372

Specification for Insulator fittingsfor overhead power lines with anominal voltage greater than1000V General Requirementsand Tests DimensionalRequirements locking devices.

IS:2486 IEC:60120IEC:60374

5 - IEC:60575 Thermal Mechanical performancetest and mechanical performancetest on string Insulators units

- IEC:60575

6 - IEC:60433 Characteristics of string Insulatorunits of the long rod type. - IEC:60433


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SN

Pin Insulator Title Disc Insulator

IndianStandard

InternationalStandard

IndianStandard

InternationalStandard

7IS:13134 IEC:60815 Guide for the selection of

insulator in respect of pollutedcondion.

- IEC:60815

8 - STRI guide1.92/1

Hydrophobicity ClarificationGuide.

- STRI guide1.92/1

9 - CISPR 18.2Part 2

Radio interference characteristicsof overhead power lines and highvoltage equipment

- CISPRl18-2Part 2

10 IS:8263 IEC:60437 Methods of RI Test of HVInsulators

IS:8263 IEC:60437

11 - ANSIC - 29.132- 2000

Standard for Insulators Composite-Distribution Dead -end type.

- ANSIC- 29.132- 2000

12 IS:4759 ISO:1459 Hot dip zinc coatings on structuralsteel & other allied products. IS:4759 ISO:1459

13 IS:2629 ISO:1461(E) Recommended practice for HotDip galvanization for iron andsteel

IS:2629 ISO:1461(E)

14 IS:6745 ISO:1460 Determination of weight of zinccoating on zinc coated Iron andsteel articles.

IS:6745 ISO:1460

15 IS:3203 ISO:2178 Methods of testing of localthickness of electroplatedcoatings.

IS:3203 ISO:2178

16 IS:2633 - Testing of Uniformity of coating ofzinc coated articles.

IS:2633 -

17 - ASTM D578-05

Standard Specification for glassfiber standards.

- ASTM D578-05

18 - ASTM D578-05

Standard specification forcompositional analysis byThermogravimetry.

- ASTM E1131-03

19 IS:4699 - Specification for refinedsecondary zinc.

IS:4699 -

2.1.1 In the event of supply of Insulators conforming to standards other thanspecified, the Bidder shall confirm in his bid that these standards areequivalent or better to those specified. In case of award, salient features of

comparison between the standards proposed by the Bidder and thosespecified in this document will be provided by the Supplier to establishequivalence.

3. TECHNICAL DESCRIPTION OF COMPOSITE INSULATORS:-

3.1 Service condition:-The polymer Insulators to be supplied shall be suitable for satisfactory

continuous operation under condition s as specified below:

I. Maximum temperature of air in shed 45oC

II. Minimum temperature of air in shed 4oCIII. Maximum relative humidity 95% (The humidity some time

approaches saturation point)


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IV. Minimum relative humidity 10 %

V. Average number of dust-storm daysper annum

40 days

VI. Average number of rainy days perannum

90 days

VII. Number of months of tropicalmonsoonconditions per annum

3 months

VIII. Average annual rainfall 1250 mm

IX. Maximum wind pressure 150 Kg / Sq. mm

X. Altitude not exceeding 1000 metres

(The limit of ambient temperature shall be 45oC peak and 35oC averageover a period of 24 hours)

3.2 GENERAL REQUIREMENTS :-

3.2.1 The Insulators shall be suitable for 3 phase, 50 Hz, effectively earthed1IkV and 33kV O/H distribution system in a moderately pollutedatmosphere. Long rod Insulators shall be of tongue & clevis type and shallbe suitable for both the suspension and strain type load.

3.2.2 Bidder must be an indigenous manufacturer and supplier of compositeInsulators of rating 11 kV or above or must have developed proven inhouse technology and manufacturing process for composite Insulators ofabove rating or possess technical collaboration / association with amanufacturer of composite Insulators of rating 11 kV or above. The Biddershall furnish necessary evidence in support of the above along with thebid, which can be in the form of certification from the utilities concerned, or

any other documents to the satisfaction of the purchaser.

3.2.3 Insulators shall have sheds with good self-cleaning properties. Insulatorshed profile, spacing, projection etc, and selection in respect of pollutedconditions shall be generally in accordance with the recommendation ofIEC-60815/IS: 13134.

3.2.4 The size of Composite insulator, minimum creepage distance andmechanical strength along with hardware fittings shall be as follows:

S

N

Type of

compositeInsulator

Nominal

systemvoltage

kV(rms)

Highest

systemvoltage

kV(rms)

Visible

dischargetest voltage

kV (rms)

Wet Power

FrequencywithstandvoltagekV (rms)

Impulse

withstandvoltagekV (rms)

Minimum

creepagedistance formoderately

polluted area(mm)

Min.failing

Load KN

1 PinInsulator

11 12 9 35 75 240 5

33 36 27 75 170 720 10

1 Long rodInsulators(Disc Insulator)

11 12 9 35 75 240 45

33 36 27 75 170 720 45

Note: Creepage distances have been considered in line with IS-13134 (whichspecifies 20mm/ kV for moderately polluted environment and 25 mm/kVfor heavily polluted area).


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3.3 Dimensional Tolerance of Composite Insulators:-The tolerances on all dimensions e.g. diameter, length and

creepage distance shall be allowed as follows in line with-lEC 61109:

(0.04d+1.5) mm when d300 mm.

Where, d being the dimensions in millimeters for diameter, length orcreepage distance as the case may be.

However, no negative tolerance shall be applicable to creepagedistance.

3.4 Interchangeably:-The composite Insulators including the end fitting connection shall

be of standard design suitable for use with the hardware fittings of any

make conforming to relevant IEC / IS standards.

3.5 Corona and Rl Performance:-All surfaces shall be clean, smooth, without cuts, abrasions or

projections. No part shall be subjected to excessive localized pressure.The insulator and metal parts shall be so designed and manufactured thatit shall avoid local corona formation and not generate any radiointerference be end specified limit under the operating conditions.

4. BASIC FEATURES:-

4.1 Design and construction:-The composite insulator shall have a core, housing & weather shed

of insulating material and steel hardware components for attaching it tothe support / conductor.

4.1.1 Core:-It shall be a glass-fiber reinforced epoxy resin rod of high strength

(FRP rod). Glass fibers and resin shall be optimized in the FRP rod. Glassfibers shall be Boron free electrically corrosion resistant (ECR) glass fiberor Boron free E-Glass and shall exhibit both high electrical integrity andhigh resistance to acid corrosion. The matrix of the FRP rod shall be

Hydrolysis resistant. The FRP rod shall be manufactured through Pollutionprocess. The FRP rod shall be void free.

4.1.2 Housing (Sheath):-The FRP rod shall be covered by a seamless sheath of a

silicone elastometric compound or silicone alloy compound of a thicknessof 3 mm minimum. It shall be one-piece housing using injection MoldingPrinciple to cover the core. The elastomer housing shall be designed toprovide the necessary creepage distance and protection againstenvironmental influences, external pollution and humidity. Housing shallconform to the requirement of IEC 61109/92-93 with latest amendments.

It shall be extruded or directly molded on core and shall havechemical bonding with the FRP rod. The strength of the bond shall be


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greater than the tearing strength of the polymer. Sheath material in thebulk as well as in the sealing / bonding area shall be free from voids.

Manufacturer should furnish a description of its quality assuranceprogramme including fabrication; testing and inspection for any material(i.e. rubber).Components (i.e rod) or hardware (i.e. end filings).Themanufacturer has had fabricated by others should also be included.

Manufacturing methods and material composition documentationwill be a part of Technical Bid to be submitted along with offer.

4.1.3 Weather sheds:-The composite polymer Weather sheds made of silicone

electrometric compound or silicon alloy shall be firmly bonded to thesheath, vulcanized to the sheath or molded as part of the sheath and shallbe free from imperfections. The weather sheds should have silicon contentof minimum 30% by weight. The strength of the weather shed to sheathinterface shall be greater than the tearing strength of the polymer. Theinterface, if any, between sheds and sheath (housing] shall be free fromvoids.

4.1.4 End Fittings:-End fittings transmit the mechanical load to the core. They shall be

made of spheroidal graphite cast Iron, malleable cast iron or forged steelor aluminum alloy. They shall be connected to the rod by means of acontrolled compression technique. The gap between fitting and sheathshall be sealed by a flexible silicone electrometric compound or siliconealloy compound sealant. System of attachment of end fitting to the rodshall provide superior sealing performance between housing, i.e.

seamless sheath and metal connection. The sealing must be moistureproof.

5. WORKMANSHIP:-

5.1 All the materials shall be of latest design and conform to the bestengineering practices adopted in the high voltage field. Bidders shall offeronly such Insulators as are guaranteed by them to be satisfactory andsuitable for continued good service in power transmission lines.

5.2 The design, manufacturing process and material control at various stages

shall be such as to give maximum working load, highest mobility, bestresistance to corrosion, good finish and elimination of sharp edges andcorners.

5.3 The design of the Insulators shall be such that stresses due to expansionand contraction in any part of the insulator shall not lead to deterioration.

5.4 The core shall be sound and free of cracks and voids that may adverselyaffect the Insulators.

5.5 Weather sheds shall be uniform in quality. They shall be clean, sound,

smooth and shall be free from defects and excessive flashing at partinglines.


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5.6.1 End fittings shall be free from cracks, seams, shrinks, air holes and roughedges. End fittings should be effectively sealed to prevent moistureingress; effectiveness of sealing system must be supported by testdocuments. All surfaces of the metal parts shall be perfectly smooth without projecting points or irregularities, which may cause corona. All loadbearing surfaces shall be smooth and uniform so as to distribute theloading stresses uniformly.

5.7 All ferrous parts shall be hot dip galvanized to give a minimum averagecoating of zinc equivalent to 610 gm/Sq.m, or 87 mm thickness and shallbe in accordance with the requirement of IS: 4759. The zinc used forgalvanizing shall be of purity 99.5% as per IS: 4699, The zinc coating shallbe uniform, adherent, smooth, reasonably bright continuous and free fromimperfections such as flux, ash rust stains, bulky white deposits andblisters. The galvanized metal parts shall be guaranteed to withstand atleast four successive dips each lasting for one (1) minute duration under

the standard preece test. The galvanizing shall be carried out only afterany machining.

6. EQUIPMENT MARKING:-

6.1 Each insulator unit shall be legibly and indelibly marked with the followingdetails as per IEC-61109:

(a) Month &Year of manufacture(b) Min. failing load / guaranteed mechanical strength in kilo Newton

followed by the word 'KN' to facilitate easy identification.

(c) Manufacturers name/Trade mark

6.2 One 10mm thick ring or 20 mm thick spot of suitable quality of paint shallbe marked on the end fitting of each composite long rod of particularstrength in case of 33 kV Insulators for easy identification in case bothtypes of Insulators are procured by the utility. The paint shall not have anydeteriorating effect on the insulator performance. Following codes shall beused as identification mark:

For 45 kN long rod unit: BlueFor 70 kN long rod unit: Red (Not applicable)

7. BID DRAWINGS:-

7.1 The Bidder shall furnish full description and illustration of the materialoffered.

7.2 The Bidder shall furnish along with the bid the outline drawing (3 copies)of each insulator unit including a cross sectional view of the long rodinsulator unit. The drawing shall include but not be limited to the followinginformation:

(a) Long rod diameter with manufacturing tolerances(b) Minimum Creep age distance with positive tolerance(c) Protected creep age distance


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(d) Eccentricity of the long rod unit(i) Axial run out(ii) Radial run out

(e) Unit mechanical and electrical characteristics(f) Size and weight tongue & clevis(g) Weight of composite long rod unit.(h) Materials

(i) Identification mark(ii) Manufacturer's catalogue number.

7.3 The bidder shall submit full dimensioned manufacturing insulator drawingscontaining all the details in three (3) copies along with copies of all thetype tests.

7.4 After placement of award the Supplier shall also submit fully dimensionedinsulator crate drawing for different type of Insulators for approval of the

purchaser.

8. TESTS AND STANDARDS:-Insulators offered shall be manufactured with the same

configuration & raw materials as used in the Insulators for which design &type test reports are submitted. The manufacturer shall submit a certificatefor the same. The design & type test reports submitted shall not be morethan 5 years old.

8.1 Design tests:-For Composite insulators it is essential to carry out design test as

per clause 4.1 & 5 of IEC 61109 / 92-93 with latest amendments. Thedesign tests are intended to verify the suitability of the of the design,materials and method of manufacturing (technology).When a compositeinsulator is subjected to the design tests, the result shall be consideredvalid for the whole class of the insulator, which are represented by the onetested and having the following characteristics:-

Same materials for the core, and sheds and same manufacturingmethod;

Same material of the fittings, the same design, the same methodof attachment;

Same or greater layer thickness of the shed material over thecore (including a sheath where used);

Same or smaller ratio of the highest system voltage to insulationlength;

Same or smaller ratio of all mechanical loads to the smallest corediameter between fittings.

Same or greater diameter of the core.

The tested composite insulators shall be identified by a drawinggiving all the dimensions with the manufacturing tolerances.

Manufacturer should submit test reports for Design tests as per theIEC-61109 (clause-5) along with the bid. Additionally following tests shallbe carried out or reports for the tests shall be submitted after award of


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contract. UV test: the test shall be carried out in the line with clause 7.2 ofANSI C29.13.

8.2 Type Tests:-The tenderer shall furnish detailed type test reports of the offeredcomposite Insulators per clause 8.2 of the Technical Specifications at theNABL approved Laboratories to prove that the composite Insulatorsoffered meet the requirements of the Specification. These Type tests shallnot be more than 5 years from the date of opening of the tender. Thefollowing type tests shall be conducted on a suitable number of individualinsulator units, components & materials and the test report shouldinvariably be submitted with the bid:-

SN Description of type test Test Procedure / Standard1. Visual Examination As per IEC 61109 clause 8.2

2. Verification of Dimensions As per IEC 61109 clause 7.2

3. Visible Discharge Test As per IS 731 clause 10.2

4. Dry lightning impulse withstand voltage test As per IEC 61109 (clause 6.1)

5. Wet power frequency test As per IEC 61 109 (clause 6.2)

6. Mechanical load-time test As per IEC 61 109 (clause 6 .4)(Only for Disc Insulator)

7. Radio interference test As per IEC 61109 (clause 6.4)

8. Recovery of Hydrophobic test Annexure-A This test may berepeated every 3 yrs by themanufacturer

9. Chemical composition test for silicon

content

Annexure-A Or any other test

method acceptable to thepurchaser

10. Brittle fracture resistance test Annexure - A

11. Mechanical failing load test As per IEC 61 109 (clause10.8.2) (Only for Pin Insulator)

Note: -The purchase may like to conduct any other test(s) in addition to abovetests at bidders cost to establish the performance of material as persystem requirement.

8.2.2 It shall be the option of the purchaser to accept the Insulators based

on type test reports Submitted by the manufacturer. The purchasershall be free to repeat the type test & may witness the same.

Note: The purchaser, for the purpose of facilitating the type tests, may ask thebidders to quote test charges separately.

8.2.3 All the type test given in Clause No. 8.2 in addition to routine &acceptance test shall be carried out on insulator along with hardwarefittings wherever required.

8.3 Acceptance (sample) Tests:-

8.3.1 The test samples after having withstood theroutine test shall be subjectedto the following acceptance test:-


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(a) Verification of dimensions : Clause 7.2 IEC: 61109,(b) Verification of the locking system : Clause 7.3 IEC: 61 109

(if applicable)(c) Galvanizing test : IS: 2633/IS: 6745(d) Verification of the specified : Clause 7.4 IEC: 611 09, IS: 731

mechanical load(e) Verification of tightness of the : Clause 7.4 IEC: 61 109

interface between end fittings amendment 1 of 1995& Insulator housing (only for Pin insulator)

8.4 Routine Tests:-

S.No. Description Standard1 Identification of marking As per IEC: 61 109 Clause 8.12 Visual Inspection As per IEC 61 109 Clause 8.23 Mechanical routine test As per IEC: 61 109 Clause 8.3 (For

Disc Insulator)

As per IEC: 61 109 / IS:731 (For PinInsulator)

8.5 Tests during ManufactureFollowing tests shall also be carried out on all components as applicable:

a) Chemical analysis of zinc used for galvanizingb) Chemical analysis, mechanical, metallographic test and magnetic

particle inspection for malleable castings.c) Chemical analysis, hardness tests and magnetic particle inspection for

forgings.

8.6 Sample Batch for Type Testing

8.6.1 The bidder shall offer material for sample selection for type testing onlyafter getting Quality Assurance Programme approved by the Purchaser,The bidder shall offer at least three times the quantity of materials requiredfor conducting all the type tests for sample selection. The sample for typetesting will be manufactured strictly in accordance with the QualityAssurance Programme approved by the Purchaser,

8.7 Additional Tests:-

8.7.1 The Purchaser reserves the right at his own expenses, for carrying outany other test(s) of reasonable nature carried out at Supplier's premises,at site, to in any other place in addition to the aforesaid type, acceptanceand routine tests to satisfy himself that the material comply with theSpecifications.

8.7.2 The Purchaser also reserves the right to conduct all the tests mentioned inthis specification at his own expense on the samples drawn from the siteat Supplier's premises or at any other test center. In case of evidence of

non compliance, it shall be binding on the part of the Supplier to prove thecompliance of the items to the technical specifications by repeat tests or


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correction of deficiencies or replacement of defective items, all without anyextra cost to the Purchaser.

8.8 Co-ordination for Testing:-

8.8.1 The Supplier shall have to co-ordinate testing of Insulators with hardwarefittings to be supplied by other Supplier and shall have to guaranteeoverall satisfactory performance of the Insulators with the hardwarefittings.

8.9 Quality assurance plan:-

8.9.1 The successful bidder shall submit following information to the purchaser:-

8.9.1.1 Test certificates of the raw materials and bought out accessories.

8.9.1.2 Statement giving list of important raw materials, their grades along withnames of sub suppliers for raw materials, list of standards according towhich the raw materials are tested. List of tests normally carried out onraw materials in presence of bidder's representative.

8.9.1.3 List of manufacturing facilities available.

8.9.1.4 Level of automation achieved and lists of areas where manualprocessing exists.

8.9.1.5 List of areas in manufacturing process, where stage inspections arenormally carried out for quality control and details of such tests andinspections.

8.9.1.6 List of testing equipments available with the bidder for final testing ofequipment along with valid calibration reports.

8.9.1.7 The manufacturer shall submit Manufacturing Quality Plan (MQP) forapproval & the same shall be followed during manufacture and testing.

8.9.2 The successful bidder shall submit the routine test certificates of bought

out raw materials / accessories and central excise passes for rawmaterial at the time of inspection.

8.10 Test Reports:-

8.10.1 Copies of acceptances test reports shall be furnished and only afterwhich the material shall be dispatched.

8.10.2 Record of routine test reports shall be maintained by the Supplier at hisworks for periodic inspection by the Purchaser's representative.

8.10.3 Test certificates of test during manufacture shall be maintained by theSupplier.These shall be produced for verification as and when desiredby the Purchaser.


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09. PACKING:-

9.1. AlI Insulators shall be packed in strong corrugated box of min, 7 ply dulypaletted or wooden crates. The gross weight of the crates along with thematerial shall not normally exceed 100 Kg to avoid handling problem.The crates shall be suitable for outdoor storage under wet climate duringrainy season.

9.2. The packing shall be of sufficient strength to withstand rough handlingduring transit, storage at site and subsequent handling in the field.

9.3. Suitable cushioning, protective padding, or dunnage or spacers shall beprovided to prevent damage or deformation during transit and handling.

9.4 All packing cases shall be marked legibly and correctly so as to ensure

safe arrival at their destination and to avoid the possibility of goods beinglost or wrongly dispatched on account of faulty packing and faulty orillegible markings. Each wooden case / crate / corrugated box shall haveall the markings stenciled on it in indelible ink.

9.5 The bidder shall provide instructions regarding handling and storageprecautions to be taken at site.



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Annexure-ATests on Insulator Units

1. RIV Test (Dry):-

The insulator string along with complete hardware fittings shall have aradio interference voltage level below 100 micro volts at one MHz whensubjected to 50 Hz AC voltage of 10 kV& 30 kV for 11 kV& 33 kV classinsulators respectively under dry condition. The test procedure shall be inaccordance with IS:326B /I EC : 437/CISPfi 18-2.

2. Brittle Fracture Resistance Test:-

Brittle fracture test shall be carried out on naked rod along with end fittingsby applying "1 n HNO3 acid" (63 g cone, HN03 added to 937 g water) tothe rod. The rod should be held at 80% of SML for the duration of the test.

The rod should not fail within the 96 hour test duration. Test arrangementshould ensure continuous wetting of the rod with Nitric acid.

3. Recovery of Hydrophobicity & Corona test:-

i) The test shall be carried out on 4mm thick samples of 5cm x 7cmThe surface of selected samples shall be cleaned with isopropyl alcohol.Allow the surface to dry and spray with water Record the Hydrophobicityclassification in line with STRI guide for Hydrophobicity classification.. Drythe sample surface.

ii) The sample shah subjected to mechanical stress by bending the sample

over a ground electrode. Corona is continuously generated by applying 12kV to a needle like electrode placed 1mm above the sample surface. Thetest shall be done for 100 hrs.

iii) Immediately after the corona treatment, spray the surface with water andrecord the HC classification. Dry the surface and repeat the coronatreatment as at clause 7 above. Note HC classification. Repeat the cyclefor 1000 hrs. or until an HC of 6 or 7 is obtained. Dry the sample surface.

iv) Allow the sample to recover and repeat hydrophobiticiy measurement atseveral lime intervals. Silicone rubber should recover to HC 1 - HC 2within 24 to 48 hours, depending on the material and the intensity of thecorona treatment.

4. Chemical composition test for Silicon content :-

The content of silicon in the composite polymer shall be evaluated by EDX(Energy Dispersion X-ray) Analysis or Thermo-gravimetric analysis. Thetest may be carried out at CPRI or any other NABL accredited laboratory.


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SCHEDULE-III (A)

GUARANTEED TECHNICAL PARTICULARS OF 11 KV & 33 KV PININSULATORS (PORCELAIN)

(To be filled in envelope containing Technical offer)

S.No

PARTICULARS DETAILS TO BEFURNISHED

11 KV PinInsulator

(Porcelain)

33 KV PinInsulator

(Porcelain)

1. Makers name & country2. Electrical Characteristicsa. Nominal system Voltage KV KV

b. Highest system Voltage KV KV

c. Visible discharge voltage KV KV

d. Dry one minute power frequency withstand voltage KV KV

e. Wet one minute power frequency withstand voltage KV KV

f. Power frequency puncture withstand test voltage KV KV

g. Impulse withstand voltage (1/50 micro second wave)positive

KV KV

h. Impulse withstand voltage (1/50 micro second wave)negative

KV KV

i. Impulse flashover(1/50 micro second wave) withstandvoltage positive

KV KV

j. Impulse flashover(1/50 micro second wave) withstandvoltage negative

KV KV

k. Dry flashover voltage KV KVi. Wet flashover voltage KV KV

3. Mechanical characteristic

a. Minimum creepage distance mm mm

b. Minimum failing load KN KN

4. Colour of glaze

5. Size of Insulator

a. Diameter mm mm

b. Height mm mm

6. Standard according to which porcelain insulator shall bemanufactured and tested

7. Tolerance in dimensions, if any8. Weight per unit of

a. Porcelain part

b. Metallic part

9. Whether write-up describing complete details has beenfurnished.

10. Whether drawing showing dimensional details has beenfurnished

11. Whether type test certificates have been furnishedalongwith attested copy of drawing

12. Other particulars, if any

PLACE: SIGNATURE OF TENDERERDATE : NAME IN FULL DESIGNATION /

STATUS IN THE FIRM COMPANY SEAL


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34

SCHEDULE-III (B)

GUARANTEED TECHNICAL PARTICULARS OF COMPOSITEPOLYMER PIN AND DISC INSULATORS LONG ROD TYPE)(To be filled and kept in envelops containing Technical Offer)

Sl.No.

Description DETAILS TO BE FURNISHED11 KV Pin Insulator

(Polymer)11 KV,

45 KN DiscInsulator(Polymer)

33 KVComposite

Disc Insulator(Polymer)

1. Name of Manufacturer

2. Address:

(a) registered Office

(b) Factory

3. Type of Insulators

4. Standard specification to which the

Insulators manufactured and tested5. Name of material used in

manufacture of the Insulator (withclass / grade)

a. Material of core rod

b. Material of Housing & weather sheds(silicon content by weight)

c. Material of end fittings : tongue/clevis

d. Sealing compound for end fitting

6. Colour Glaze of Insulator

7. Electrical Characteristics:a. Nominal system Voltage (KV rms)

b. Highest System Voltage (KV rms)

c. Dry power frequency withstand (KVrms)

d. Wet power frequency withstand (KVrms)

e. Dry flash over voltage (KV rms)

f. Wet flash over voltage (KV rms)

g. Dry lighting impulse withstand voltage

(i) Positive

(ii) Negative

h. Dry lighting impulse flashover voltage

(i) Positive (KV peak)(ii) Negative (KV peak)

(i) RIV at 1 MHz when energized at10kV/ 30kV (rms) under dry condition(microvolt)

j. Creep age distance (min) mm

8. Mechanical Characteristics:Minimum failing load (KN)

9. Dimensions of Insulator:a. Weight (Kg.)

b. Dia of FRP rod (mm)

c. Length of ERP rod (mm)d. Dia of weather sheds (mm)

e. Thickness of housing (mm)

f. Dry arc distance (mm)


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35

10. Dimensioned drawings of Insulator(including weight with tolerances inweight) enclosed.

11. Method of fixing of sheds to housingspecify ):- single mould or modular

construction (injectionmoulding/compression moulding)

12. No. of weather sheds

13. Type of sheds

a. Aerodynamic

b. With under ribs

14. Packing details

a. Type of packing.

b. No. of Insulators in each pack

c. Gross weight of package

15. Any other particulars which the biddermay like to give.

PLACE: SIGNATURE OF TENDERERNAME IN FULL DESIGNATION / STATUS INTHE FIRM COMPANY SEAL

DATE:


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36

SCHEDULE IV

UNDERTAKING

& CERTFICATE / DECLARATION

I, _____ _____ _____ _____ ______ SOLE PROPRIETOR/PARTNER / DIRECTOR OF M/S ____________ _______ ______ _____ ______ _____ _____ _____ ____ IS GIVING UNDERTAKING THATDETAILS GIVEN ARE CORRECT TO THE BEST OF MY KNOWLEDGE AND I AGREE TO ABIDE BYALL YOUR TENDER / ORDER TERMS AND CONDITIONS. IN CASE IT IS OBSERVED TO BE FALSEINCORRECT/INCOMPLETE SUBSEQUENTLY, I WILL BE SOLELY RESPONSIBLE.

FURTHER IT IS TO CONFIRM THAT THE RATES QUOTED BY US IN PRICE &QUANTITYSCHEDULE-I IS INCLUSIVE OF ALL THE CHARGES / LEVIES / TAXES i.e. PACKING, FORWARDING,FREIGHT, EXCISE DUTY, SALES TAX, COMMERCIAL TAX OCTOROI AND ANY OTHER CHARGESETC.

FURTHER IT IS TO CERTIFY THAT THER IS NO ANY COMMERCIAL OR TECHNICALDEVIATION AND THE MATERIAL AND WILL BE SUPPLIED EXACTLY AS PER TENDERSPECIFICATIONS AND TERMS AND CONDITIONS MENTIONED IN THIS INSTANT TENDER NO. 398.

CERTFICATE / DECLARATION

It is confirmed that no partner or director of the firm has any relationship with any servingor retired (within the past 730 days) officer(s) / employee(s) of the Company and in the event ofsuch incidence the details of the employee/director/partner/shareholder/relationship should bestated in an affidavit.

PLACE: SIGNATURE OF TENDERER

DATE: NAME IN FULL

DESIGNATION / STATUS IN THE FIRM

COMPANY SEAL


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37

SCHEDULEV

QUANTITY SCHEDULE (UNPRISED)(TO BE SUBMITTED ALONGWITH PART-II OF TENDER)

S.

No.

Particulars Qty.

tendered.

( in Nos.)

Qty.

Offered

(in Nos.)

Per Unit

Ex-WorksPriceinclusiveof packing&forwardingcharges

( in Rs.)

Per Unit

ExciseDuty in% and

( in Rs.)

Per

UnitSalesTax in%and

( inRs.)

Any

OtherTax in%and

( inRs.)

Per Unit

Freightcharges

( in Rs.)

Total FOR

destination unitprice anywherein Chhattisgarhinclusive of alltaxes & dutiesbut exclusive ofEntry tax

(in Rs.)

1 2 3 4 5 6 7 8 9 10= (5+6+7+8+9)

1.11 KV PinInsulator

(i) Porcelain 3552

(ii) Polymer 2761

2. 33 KV PinInsulatorPorcelain

8557


8757


751

SIGNATURE OF TENDERER

NAME

DESIGNATION

Date post:	04-Apr-2018
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