corrigendum: i · 11 kalunga-ii 27358719.00 273587.00 13679360.00 12 kansbahal 3336629.00 33366.00...

WESCO UTILITY

Head Quarter Office, Burla-768017 Phone: (0663)2431297, Facsimile: (0663) 2432115 E-Mail: [email protected], Web site: www.wescoorissa.com

DEPARTMENT OF WORKS & PLANNING

Head Quarter Office (EAST BUILDING), Burla-768017 E-Mail: worksand [email protected]

NIT NO.: WESCO/WORKS/19-20/02 DTD. 12.09.2019 ~ 1 ~ Signature of Bidder with Seal

Letter No.: WESCO/WORKS/19-20/02/ 1157 Date: 25.09.2019

CORRIGENDUM: I Ref.: This Office NIT No.: WESCO/WORKS/19-20/02 Date: 12.09.2019 Inviting reference to the above, the prospective bidders may note the following changes / modifications to relevant provisions of our Tender Notice & Tender Specifications. 1. Modification to PRICE BID in EXCEL Format:

All the bidders are requested to submit their offered price in “REVISED PRICE BID” only uploaded in EXCEL Format instead of ‘PRICE BID’. It is for the kind notice of all the bidders that if any bidder has submitted their price offer in old ‘PRICE BID’ format, his bid shall be out rightly rejected without any further communication.

2. Modification to Sl. No., Estimated Cost, EMD Amount & Minimum Financial Turn Over Criteria in SCHEDULE OF WORKS TENDERED:

Name of Division

Package Number

Name of Package

Estimated Amount (In RS.)

EMD Amount (In RS.)

Minimum Financial

Turn Over Criteria (in Rs.)

Cost of Tender Paper

(in Rs.)

RED Rourkela 1 Bisra 11160753.00 111608.00 5580377.00 12, 800

(Including GST)

2 Bondamunda 1540650.00 15407.00 770325.00

RSED Rourkela

3 Bonai 26806957.00 268070.00 13403479.00 4 Koira 14299629.00 142996.00 7149815.00 5 Lahunipara 22947499.00 229475.00 11473750.00 6 Lathikata 14436281.00 144363.00 7218141.00 7 Mahuldiha 6192344.00 61923.00 3096172.00

RED Rajgangpur

8 Bargaon 60395555.00 603956.00 30197778.00 9 Birmitrapur 23247120.00 232471.00 11623560.00

10 Hatibari 37883535.00 378835.00 18941768.00

http://www.wescoorissa.com/

mailto:worksand%[email protected]

WESCO UTILITY





11 Kalunga-II 27443449.00 274434.00 13721725.00

12 Kansbahal 3347265.00 33473.00 1673633.00 13 Kuanrmunda 20734853.00 207349.00 10367427.00 14 Kutra 46802451.00 468025.00 23401226.00 15 Rajgangpur-I 2270941.00 22709.00 1135471.00 16 Rajgangpur-III 1705528.00 17055.00 852764.00

SED Sundargarh

17 Bhedabahal 16635515.00 166355.00 8317758.00 18 Gopalpur 71034757.00 710348.00 35517379.00 19 Hemgir 40921659.00 409217.00 20460830.00 20 Lefripada 24018579.00 240186.00 12009290.00 21 Majhapada 11469309.00 114693.00 5734655.00 22 Sargipali 7383906.00 73839.00 3691953.00 23 Subdega 44157190.00 441572.00 22078595.00 24 Ujalpur 53331651.00 533317.00 26665826.00

JED Jhrasuguda

25 Bagdihi 6676287.00 66763.00 3338144.00 26 Kachery 1396318.00 13963.00 698159.00 27 Laikera 8650976.00 86510.00 4325488.00 28 Pahadi 1297270.00 12973.00 648635.00 29 Raghunathpali 5261759.00 52618.00 2630880.00 30 Sahapada 2435738.00 24357.00 1217869.00

BED Brajrajnagar

31 Bandhbahal 11039625.00 110396.00 5519813.00 32 Belpahar 15600265.00 156003.00 7800133.00 33 Brajrajnagar 1043868.00 10439.00 521934.00 34 Gandhichowk 1544925.00 15449.00 772463.00 35 Gumadera 835094.00 8351.00 417547.00 36 Panchgaon 2048209.00 20482.00 1024105.00

DED Deogarh

37 Telibani 34189927.00 341899.00 17094964.00 38 Deogarh 10389801.00 103898.00 5194901.00 39 Budhapal 1737354.00 17374.00 868677.00 40 Reamal 20423271.00 204233.00 10211636.00 41 Barkot 10494015.00 104940.00 5247008.00

SEED Sambalpur

42 Rairakhol 48772412.00 487724.00 24386206.00 43 Naktideual 35878513.00 358785.00 17939257.00



WESCO UTILITY





SED Sambalpur 44 Chiplima 1586679.00 15867.00 793340.00

BED Bargarh 45 Bhukta 18100998.00 181010.00 9050499.00 46 Godbhaga 4257070.00 42571.00 2128535.00

BWED Bargarh

47 Melchamunda 8609733.00 86097.00 4304867.00 48 Ghenss 5342659.00 53427.00 2671330.00 49 Gaisilet 3524869.00 35249.00 1762435.00 50 Jharbandh 37464989.00 374650.00 18732495.00 51 Padampur-II 4826268.00 48263.00 2413134.00 52 Paikmal 4723588.00 47236.00 2361794.00

BED Bolangir

53 Agalpur 22313471.00 223135.00 11156736.00 54 Chhatamakhana 2820325.00 28203.00 1410163.00 55 Deogaon 2170069.00 21701.00 1085035.00 56 Loisingha 10790671.00 107907.00 5395336.00 57 Salebhata 22372945.00 223729.00 11186473.00 58 Tusura 9139122.00 91391.00 4569561.00

TED Titilagarh

59 Khaprakhol 5554341.00 55543.00 2777171.00 60 Patnagarh-III 879162.00 8792.00 439581.00

SED Sonepur

61 B.M.Pur 6491635.00 64916.00 3245818.00 62 Cherupali 20711006.00 207110.00 10355503.00 63 Khari 31431674.00 314317.00 15715837.00 64 Mahadevpali 9790502.00 97905.00 4895251.00 65 S.Rampur 4058823.00 40588.00 2029412.00 66 Subalaya 49495588.00 494956.00 24747794.00 67 Tarva 39446687.00 394467.00 19723344.00 68 Ullunda 92201663.00 922017.00 46100832.00

KEED Bhawanipatna

69 Bhangabari 793340.00 7933.00 396670.00 70 Biswanathpur 14798021.00 147980.00 7399011.00 71 Chhatiguda 2510786.00 25108.00 1255393.00 72 College Square 7963847.00 79638.00 3981924.00 73 M. Rampur 6481933.00 64819.00 3240967.00 74 Madanpur 1294396.00 12944.00 647198.00 75 Naktiguda 3035252.00 30353.00 1517626.00



WESCO UTILITY





76 Nunmath 1085039.00 10850.00 542520.00

KWED Bhawanipatna

77 Jayapatna 1544925.00 15449.00 772463.00 78 Junagarh No-II 4963874.00 49639.00 2481937.00 79 Kalampur 8556131.00 85561.00 4278066.00

NED Nuapada

80 Khariar Road-II 18082544.00 180825.00 9041272.00 81 Khariar-II 5606913.00 56069.00 2803457.00 82 Komna 14472933.00 144729.00 7236467.00 83 Kurumpuri 44224492.00 442245.00 22112246.00 84 Nuapada 50756192.00 507562.00 25378096.00

In place of as per Existing Tender in SCHEDULE OF WORKS TENDERED:

Name of Division

Sl. No.

Name of Package

Estimated Amount (In RS.)

EMD Amount (In RS.)

Minimum Financial Turn Over Criteria

( in Rs.)

Cost of Tender Paper (Rs.)

RED Rourkela

1 Bisra 11136332.00 111363.00 5568166.00 12, 800 (Including GST)

2 Bondamunda 1538328.00 15383.00 769164.00

RSED Rourkela

3 Bonai 26734995.00 267350.00 13367498.00 4 Koira 14249227.00 142492.00 7124614.00 5 Lahunipara 22881071.00 228811.00 11440536.00 6 Lathikata 14393593.00 143936.00 7196797.00 7 Mahuldiha 6168145.00 61681.00 3084073.00

RED Rajgangpur

8 Bargaon 60230085.00 602301.00 30115043.00 9 Birmitrapur 23173143.00 231731.00 11586572.00 10 Hatibari 37921953.00 379220.00 18960977.00 11 Kalunga-II 27358719.00 273587.00 13679360.00 12 Kansbahal 3336629.00 33366.00 1668315.00 13 Kuanrmunda 20706094.00 207061.00 10353047.00 14 Kutra 46676997.00 466770.00 23338499.00 15 Rajgangpur-I 2265305.00 22653.00 1132653.00 16 Rajgangpur-III 1701712.00 17017.00 850856.00

SED Sundargarh

17 Bhedabahal 16596741.00 165967.00 8298371.00 18 Gopalpur 70887466.00 708875.00 35443733.00 19 Hemgir 40789882.00 407899.00 20394941.00



WESCO UTILITY





20 Lefripada 23979661.00 239797.00 11989831.00 21 Majhapada 11441629.00 114416.00 5720815.00 22 Sargipali 7375100.00 73751.00 3687550.00 23 Subdega 44072679.00 440727.00 22036340.00 24 Ujalpur 53217988.00 532180.00 26608994.00

JED Jhrasuguda

25 Bagdihi 6642249.00 66422.00 3321125.00 26 Kachery 1392666.00 13927.00 696333.00 27 Laikera 8604909.00 86049.00 4302455.00 28 Pahadi 1295468.00 12955.00 647734.00 29 Raghunathpali 5233550.00 52336.00 2616775.00 30 Sahapada 2430603.00 24306.00 1215302.00

BED Brajrajnagar

31 Bandhbahal 11007348.00 110073.00 5503674.00 32 Belpahar 15627637.00 156276.00 7813819.00 33 Brajrajnagar 1039703.00 10397.00 519852.00 34 Gandhichowk 1538760.00 15388.00 769380.00 35 Gumadera 831762.00 8318.00 415881.00 36 Panchgaon 2049926.00 20499.00 1024963.00

DED Deogarh

37 Telibani 34075501.00 340755.00 17037751.00 38 Deogarh 10361197.00 103612.00 5180599.00 39 Budhapal 1733195.00 17332.00 866598.00 40 Reamal 20363288.00 203633.00 10181644.00 41 Barkot 10462655.00 104627.00 5231328.00

SEED Sambalpur

42 Rairakhol 48578786.00 485788.00 24289393.00 43 Naktideual 35713978.00 357140.00 17856989.00

SED Sambalpur 44 Chiplima 1580349.00 15803.00 790175.00

BED Bargarh 45 Bhukta 18030694.00 180307.00 9015347.00 46 Godbhaga 4242304.00 42423.00 2121152.00

BWED Bargarh

47 Melchamunda 8580706.00 85807.00 4290353.00 48 Ghenss 5324874.00 53249.00 2662437.00 49 Gaisilet 3512284.00 35123.00 1756142.00 50 Jharbandh 37339985.00 373400.00 18669993.00 51 Padampur-II 4813012.00 48130.00 2406506.00



WESCO UTILITY





52 Paikmal 4710589.00 47106.00 2355295.00

BED Bolangir

53 Agalpur 22246690.00 222467.00 11123345.00 54 Chhatamakhana 2811433.00 28114.00 1405717.00 55 Deogaon 2160840.00 21608.00 1080420.00 56 Loisingha 10761140.00 107611.00 5380570.00 57 Salebhata 22308849.00 223088.00 11154425.00 58 Tusura 9107578.00 91076.00 4553789.00

TED Titilagarh

59 Khaprakhol 5538737.00 55387.00 2769369.00 60 Patnagarh-III 879162.00 8792.00 439581.00

SED Sonepur

61 B.M.Pur 6479554.00 64796.00 3239777.00 62 Cherupali 20653118.00 206531.00 10326559.00 63 Khari 31310619.00 313106.00 15655310.00 64 Mahadevpali 9753252.00 97533.00 4876626.00 65 S.Rampur 4041709.00 40417.00 2020855.00 66 Subalaya 49388538.00 493885.00 24694269.00 67 Tarva 39281078.00 392811.00 19640539.00 68 Ullunda 92017551.00 920176.00 46008776.00

KEED Bhawanipatna

69 Bhangabari 790174.00 7902.00 395087.00 70 Biswanathpur 14740437.00 147404.00 7370219.00 71 Chhatiguda 2499269.00 24993.00 1249635.00 72 College Square 7917758.00 79178.00 3958879.00 73 M. Rampur 6444008.00 64440.00 3222004.00 74 Madanpur 1289232.00 12892.00 644616.00 75 Naktiguda 3017383.00 30174.00 1508692.00 76 Nunmath 1082052.00 10821.00 541026.00

KWED Bhawanipatna

77 Jayapatna 1538760.00 15388.00 769380.00 78 Junagarh No-II 4943101.00 49431.00 2471551.00 79 Kalampur 8516604.00 85166.00 4258302.00

NED Nuapada

80 Khariar Road-II 17993252.00 179933.00 8996626.00 81 Khariar-II 5599233.00 55992.00 2799617.00 82 Komna 14431411.00 144314.00 7215706.00 83 Kurumpuri 44064820.00 440648.00 22032410.00 84 Nuapada 50573139.00 505731.00 25286570.00



WESCO UTILITY





3. Modification to TIME SCHEDULES & Submission of the Bids in Cl. No.: 2.2, Cl. No.: 12, Cl. No.: 15 of Sec-I of IFB:

Sl. No.

Description of Event Existing Date & Time as per Tender Norms

Modified Date & Time

2. Last Date & Time for submission of Bid Document

27.09.2019 AT 13:00 hrs. 11.10.2019 at 13:00 hrs.

3. Date & Time for opening of Technical Bid

27.09.2019 AT 16:00 hrs. 11.10.2019 at 16:00 hrs.

4. Modification to Cost of Tender Paper in Cl. No.: 4 of IFB & EARNEST

MONEY DEPOSIT (EMD) in Cl. No.: 4 of IFB & Cl. No.: 10.1 of GTCC: Description of

Event Existing Tender Norms Modified As

Cost of Tender Paper (Non Refundable)

Rs. 12, 800.00 (Rupees Twelve Thousand Eight Hundred only) including GST in shape of Cash/ Account Payee demand draft issued in favour of The Administrator, WESCO Utility payable at Burla/Sambalpur

Rs. 12, 800.00 (Rupees Twelve Thousand Eight Hundred only) including GST in shape of Cash/ Account Payee demand draft issued in favour of The Administrator, WESCO Utility payable at Burla/Sambalpur. Cost of tender paper shall be fully exempted for the local MSEs units located in the state of Odisha having valid registration in DIC / NSIC / OSIC on the date of submission of the tender. It is also applicable for consortium of MSEs Units.

Amount of E.M.D. Payable

Package wise (Section) EMD in shape of account payee demand draft / Bank Guarantee in favour of The Administrator, WESCO Utility payable at Burla / Sambalpur. In case of Bank Guarantee, the Bank Guarantee must be encashable at Burla / Sambalpur.

Package wise EMD in shape of account payee DEMAND DRAFT in favour of The Administrator, WESCO Utility payable at Burla / Sambalpur. Local MSEs units located in state of Odisha having valid registration in DIC / NSIC / OSIC on the date of submission of the tender shall be allowed 50% exemption of the EMD amount as prescribed in Cl. No.: 2 of CORRIGENDUM: I. It is also applicable for consortium of MSEs Units.



WESCO UTILITY





5. Modification to SCHEDULE OF REQUIREMENTS in Cl. No.: 5.0 of IFB: Description of

Event Existing Tender

Norms Modified As

SCHEDULE OF REQUIREMENTS

Bidder must have to quote for the entire quantum of works package wise (Section) specified in the tender schedule but he / she can participate for maximum of four nos. of Packages.

Bidder must have to quote for the entire quantum of works package wise specified in the tender schedule but he / she can participate for minimum one and maximum Eighty Four numbers of packages. However, a bidder shall be awarded maximum Five numbers of packages. The Opening & Evaluation of price Bids shall be done as per the Package Number, in Ascending Order (1, 2, 3, …., 84) as appearing in Part-2 of Price Bid.

6. Modification to Technical Criteria for qualification in Cl. No.: 6.2 of IFB:

Description of Event

Existing Tender Norms Modified As

Technical Criteria for qualification

“The bidder must have executed 8 KM new 33 KV line / 11 KV line & 5 KM new LT line or above capacity during the last five financial years preceding to the year of tender notification and should have successful operation of minimum period of one year. Bidder must enclose copies of the relevant work orders along with client certified copies of Performance Certificates.

“The bidder must have executed minimum 8 KM new 33 KV line / 11 KV line & 5 KM new LT line during the last five financial years preceding to the year of tender notification and should have successful operation of minimum period of one year. Bidder must enclose copies of the relevant work orders along with client certified copies of Performance Certificates.

7. Modification to CONTRACT PERFORMANCE BANK GUARANTEE in Cl.

No.: 17 of IFB & Cl. No.: 29.1 in GTCC: Description of

Event Existing

Tender Norms Modified As

CONTRACT PERFORMANCE BANK GUARANTEE

Within 15 days of issue of the Work Order or Letter of

Within 15 days of issue of the Work Order or Letter of Award, whichever is earlier, the Contractor shall submit Contract Performance Bank Guarantee issued by a scheduled Bank, in favour of the Owner, covering 10% of the total value of the work order / LOA.



WESCO UTILITY





Award, whichever is earlier, the Contractor shall submit Contract Performance Bank Guarantee issued by a scheduled Bank, in favour of the Owner, covering 10% of the total value of the work order.

In the event of non-submission of CPBG in stipulated period, 15% of the total value of the work order / LOA shall be deducted from the first bill. The said deducted amount shall be released after successful completion of the guarantee period. Non-submission of CPBG within 15 days from issue of LOA / Work Order shall attract non-refundable penalty @ 1.25% per month on the required amount till the date of submission of CPBG or till the date of deduction of CPBG amount from the bill whichever is earlier. Local MSEs units located in state of Odisha having valid registration in DIC/NSIC/OSIC on the date of submission of the tender shall submit 5% instead of 10% of the total value of the contract as Contract Performance Bank Guarantee.

8. Modification to HT Electrical License in Cl. No.: 1.0 & Cl. No.: 18.4 of IFB:



HT Electrical License

Valid HT Electrical License confirming to scope of work mentioned in the Technical Bid

valid HT Electrical License issued by Electrical Licensing Board of Odisha (ELBO) confirming to scope of work mentioned in the Technical Bid

9. Modification to Non-assessment Certificate in Cl. No.: 18.11 of IFB:



Non-assessment Certificate

The bidders registered in other States, are to produce “Non-assessment Certificate” from the Sale Tax Commissioner Odisha

Not Applicable

10. Modification to Additional performance security in Cl. No.: 29.5 of GTCC:



Additional performance

Additional performance security shall be deposited by the successful

Additional performance security shall be deposited by the successful bidder



WESCO UTILITY





security bidder when the bid amount is less than the estimated cost put to the tender. In such an event, the successful L1 Bidder will deposit an amount equal to the extent of exact differential cost, i.e., Estimated Cost put to the tender minus The quoted amount, as additional performance security (APS) in shape of Demand Draft drawn in any scheduled bank in favour of “The Administrator, WESCO Utility” payable at Burla / Sambalpur. The successful bidder shall deposit Additional Performance Security within 7 days from issue of LOI or Work Order, whichever is earlier. Otherwise, the bid of the successful L1 bidder shall be cancelled and EMD / Security Deposit shall be forfeited with initiation of black listing procedure against the bidder with intimation to other Utilities, OPTCL and Dept. of Energy, GoO.

when the bid amount is less than the estimated cost put to the tender. In such an event, the successful L1 Bidder will deposit an amount equal to the extent of exact differential cost, i.e., Estimated Cost put to the tender minus The quoted amount, as additional performance security (APS) in shape of Demand Draft / TDR drawn / pledged in any scheduled bank in favour of “The Administrator, WESCO Utility” payable at Burla / Sambalpur. The successful bidder shall deposit Additional Performance Security within 7 days from issue of LOI or Work Order, whichever is earlier. Otherwise, the bid of the successful L1 bidder shall be cancelled and EMD / Security Deposit shall be forfeited with initiation of black listing procedure against the bidder with intimation to other Utilities, OPTCL and Dept. of Energy, GoO.

11. Modification to TERMS OF PAYMENT in Cl. No.: 30.1 of GTCC:



Terms of Payment

80% (Eighty percent) of contract price on pro-rata basis along with taxes and duties shall be paid progressively after completion of the total work item wise of each Package and certified by the Jr. Manager, Asst. Manager/SDO/EE concerned against each calendar month by first week of the succeeding months along with utilization certificate. No payment

80% (Eighty percent) of contract price on pro-rata basis along with taxes and duties shall be paid progressively after completion of the total work item wise (as per Part-5 of Price Bid) of each Package and certified by the Jr. Manager, SDO & EE concerned against each calendar month by first week of the succeeding months along with utilization certificate. No payment shall be released if the accounts for utilization of materials unless follow with proper



WESCO UTILITY





shall be released if the accounts for utilization of materials unless follow with proper certification by the concerned Jr. Manager, Asst. Manager/SDO/EE within 30 days of submission of claim subject to certification by Owner’s Engineer-in-charge on the basis of check points involved in such items of work. Balance 20% (twenty percent) of contract price shall be paid after completion of all works, envisaged under this package including any additions and alterations, testing & commissioning, return of dismantled materials/ un-used free supply material, taking over certificate and entire stretch is fully ready for commercial operation. The payments shall be subjected to clearance from electrical inspectorate. The final payment will be made as per actual quantity of materials work done & compliance of statutory documents.

certification by the concerned Jr. Manager, SDO & EE within 30 days of submission of claim subject to certification by Owner’s Engineer-in-charge on the basis of check points involved in such items of work. Balance 20% (twenty percent) of contract price shall be paid after completion of all works, envisaged under this package including any additions and alterations, testing & commissioning, return of dismantled materials/ un-used free supply material, taking over certificate and entire stretch is fully ready for commercial operation. The payments shall be subjected to clearance from electrical inspectorate. The final payment will be made as per actual quantity of materials work done & compliance of statutory documents. The bill should be submitted in triplicate considering the terms of Clause No.: 19 of GTCC including extension of date of completion, if any to ensure non-deduction of delay completion penalty, else post facto approval of due date extension shall not be entertained after processing of bill for payment.

12. Modification to NATURE OF WORK Cl. No.: 1.0 of Section-III of Technical

Specification: Description

of Event Existing Tender Norms Modified As

NATURE OF WORK

The work covered by this Specification is for Strengthening of lines and electrocution proof for

The work covered by this Specification is for Strengthening of lines and electrocution proof for elephants in Elephant Corridor & Elephant movement area under Phase: IV Scheme within



WESCO UTILITY





elephants in Elephant Corridor & Elephant movement area under Phase: IV Scheme within the jurisdiction of WESCO Utility as specified herein and in the attached Schedules. Important: The eligible Contractor has to obtain project license from the competent authority in respect of the mentioned works prior to commencement of the work. All the expenses towards the project license and inspection thereof have to be borne by the contractor.

the jurisdiction of WESCO Utility as specified herein and in the attached Schedules. Important: The eligible Contractor has to obtain project license issued by Electrical Licensing Board of Odisha (ELBO). The same shall be submitted within 15 days of issue of LOI / LOA/ Work Order failing which the LOI / LOA/ Work Order shall be cancelled & the EMD& APS will be forfeited. However, the bidder is required to submit an undertaking on his official letter pad along with techno-commercial bid stating that they shall submit the required project license within 15 days of LOI / LOA / Work Order failing which the bidder shall be disqualified to participate in the bidding procedure.

13. Modification to Sl. No.: 11 & 15 of Cl. No.: 36.2 of Section-II of GTCC, Sl.

No.: 11 & 15 of Cl. No.: 1.4 of Section-III of Technical Specification, Cl. No.: 26.0 of Section-III of Technical Specification with corresponding GTP & Cl. No.: 35.0 of Section-III of Technical Specification with corresponding GTP:

Sl. No.

As per Existing Tender Norms As per Modified Tender Norms

1. 11 KV G.I. Pin Not Applicable 2. 33 KV G.I. Pin

14. Modification to ANNEXURE: IV & ANNEXURE: XIII (A) IN SECTION: IV

(ANNEXURES): Annexure No. As per Existing Tender Norms As per Modified

Tender Norms ANNEXURE: IV Proforma of Bank Guarantee for Advance Payment Not Applicable

ANNEXURE: XIII (A) Proforma for Bank Guarantee for Earnest Money deposit Not Applicable



WESCO UTILITY





15. Modification to Sl. No.: 10, 14, 38 of Cl. No.: 36.2 of Section-II of GTCC, Sl. No.: 10, 14, 38 of Cl. No.: 1.4 of Section-III of Technical Specification, Cl. No.: 22.0 of Section-III of Technical Specification with corresponding GTP, Cl. No.: 24.0 of Section-III of Technical Specification with corresponding GTP & Cl. No.: 34.0 of Section-III of Technical Specification with corresponding GTP of above referred Tender Specification:

Sl. No.


1. 90 KN Disc Insulator (B&S Type) 33 KV 90 KN Polymer Type Long Rod Strain Composite Insulator 11 KV 90 KN Polymer Type Long Rod Strain Composite Insulator

2. 11 KV Porcelain type Pin Insulator 11 KV 10 KN Polymer Type Composite Pin Insulator 3. 33 KV Porcelain type Pin Insulator 33 KV 10 KN Polymer Type Composite Pin Insulator

As per Modified Tender Norms, the technical specification & GTP of 11 KV/33 KV COMPOSITE INSULATORS is enclosed herewith.

15.1 11 KV/33 KV COMPOSITE INSULATORS: 15.1.1 SCOPE:

This specification covers the design, manufacture, testing and supply of 11 KV / 33 KV Composite Insulators. The composite insulators shall be of the following type:

15.1.1.1 Long rod insulators for conductors in tension application at angle / cut points the insulators shall be of ball & socket type.

15.1.1.2 Line post insulators or pin insulators for straight line locations. 15.1.2 SERVICE CONDITIONS:

The insulators to be supplied against this specification shall be suitable for satisfactory continuous operation under the following tropical conditions.

Description Unit Specification Maximum ambient temperature ºC 50 Minimum ambient temperature ºC 3.5 Relative Humidity % 10 to 100 Maximum Annual Rainfall Mm 1450 Maximum Wind pressure Kg/ m2 150



WESCO UTILITY





Maximum wind velocity KM/hr. 45 Maximum altitude above mean sea level meter 1000 Isokeraunic level Days/year 50 Seismic level (Horizontal acceleration) gm 0.3 Moderately hot and humid tropical climate Conductive to rust and fungus growth

15.1.3 SYSTEM PARTICULARS:

Nominal System Voltage 11 KV 33 KV Corresponding highest system Voltage 12 KV 36 KV Frequency 50 Hz with 3% tolerance Number of phase 3 Neutral earthing Effectively grounded

15.1.4 STANDARDS:

Unless otherwise specified elsewhere in the specifications insulators shall confirm to the latest revisions of all relevant standards available at the time of placement of the order.

15.1.5 GENERAL REQUIREMENTS: 15.1.5.1 The composite insulators shall generally conform to latest Standards as

follows:

Sl. No.

Indian Standards

Title International Standards

1. - Definition, test methods and acceptance criteria for composite insulators for A.C. overhead lines above 1000 V

IEC: 61109

2. IS: 731 Porcelain insulators for overhead power lines with a nominal voltage greater than 1000 V

IEC: 60383

3. IS: 2071 Methods of High Voltage Testing IEC: 60060-1 4. IS: 2486 Specification for Insulator fittings for Overhead power Lines with

a nominal voltage greater than 1000V General Requirements and Tests Dimensional Requirements Locking Devices

IEC: 60120 IEC: 60372

5. - Thermal Mechanical Performance test and mechanical performance test on string insulator units

IEC: 60575

6. IS: 13134 Guide for the selection of insulators in respect of polluted condition

IEC: 60815

7. - Characteristics of string insulator units of the long rod type IEC: 60433



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8. - Hydrophobicity Classification Guide STRI guide 1.92/1

9. - Radio interference characteristics of overhead power lines and high-voltage equipment

CISPR: 18-2 Part-2

10. IS: 8263 Methods of RI Test of HV insulators IEC: 60437 11. - Standard for Insulators- Composite-Distribution Dead-end Type ANSI

C29.13-2000 12. IS: 4759 Hot dip zinc coatings on structural steel & other allied products ISO: 1459,

ISO: 1461 13. IS: 2629 Recommended Practice for Hot, Dip Galvanization for iron and

steel ISO: 1461 (E)

14. IS: 6745 Determination of Weight of Zinc Coating on Zinc coated iron and steel articles

ISO: 1460

15. IS: 3203 Methods of testing of local thickness of electroplated coatings ISO: 2173 16. IS: 2633 Testing of Uniformity of Coating of zinc coated articles - 17. - Standard specification for glass fiber strands ASTM D

578-05 18. - Standard test method for compositional analysis by

Thermogravimetry ASTM E 1131-03

19. IS: 4699 Specification for refined secondary Zinc -

15.1.5.2 The Composite Insulators will be used on lines on which the conductors will be AAA Conductor of size up to 200 mm2. The insulators should withstand the conductor tension, the reversible wind load as well as the high frequency vibrations due to wind.

15.1.5.3 Contractor has to supply from manufactures, who must be an indigenous manufacturer and manufacturer of composite insulators of rating 33 KV or above

Or Must have developed proven in house technology and manufacturing process for composite insulators of above rating

Or Possess technical collaboration /association with a manufacturer of composite insulators of rating 33 KV or above.

The Manufacturer shall furnish necessary evidence in support of the above, which can be in the form of certification from the utilities concerned, or any other documents to the satisfaction of the Employer.



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15.1.5.4 Insulator shall be suitable for both the suspension and strain type of load & shall be of ball & socket type. The diameter of Composite Insulator shall be less than 200 mm. The center-to-center distance between ball & socket shall be max. 300 mm for 11 KV & 550 mm for 33 KV composite Insulator.

15.1.5.5 Insulators shall have sheds with good self-cleaning properties. Insulator shed profile, spacing, projection etc. and selection in respect of polluted conditions shall be generally in accordance with the recommendation of IEC: 60815/IS: 13134.

15.1.5.6 The size of Composite insulator, minimum creepage distance and mechanical strength along with hardware fittings shall be as follows:

Type of

Composite insulators

Nominal System Voltage (KVrms)

Highest System Voltage (KVrms)

Visible Discharge

Test Voltage (KVrms)

Wet Power

Frequency Withstand Voltage (KVrms)

Impulse Withstand Voltage (KVrms)

Minimum Creepage

Distance (mm) Heavily Polluted

25 mm/KV

Center to Center Distance

Between Ball & Socket (mm)

Minimum Failing Load (KN)

Shed Diameter

(mm) (min)

Long Rod

insulator

11 12 9 35 75 320 300 45 100

33 36 27 102 220 900 550 90 108 Pin

Insulator 11 12 9 35 75 320 5 33 26 27 75 170 900 10

15.1.6 Dimensional Tolerance of Composite Insulators:

The tolerances on all dimensions, i.e., diameter, length and creepage distance shall be allowed as follows in line with-IEC 61109:

(0.04d+1.5) mm when d ≤ 300 mm (0.025d+6) mm when d>300 mm

Where, d being the dimensions in millimeters for diameter, length or creepage distance as the case may be. However no negative tolerance shall be applicable to creepage distance.

15.1.7 Interchangeability: The composite insulator together with the ball & socket fittings shall be of standard design suitable for use with the hardware of any other indigenous make conforming to relevant standards referred above.

15.1.8 Corona and RI Performance: All surfaces shall be clean, smooth, without cuts, abrasions or projections. No



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part shall be subjected to excessive localized pressure. The insulator and metal parts shall be so designed and manufactured that it shall avoid local corona formation and not generate any radio interference beyond specified limit under the operating conditions.

15.1.9 TECHNICAL DESCRIPTION OF COMPOSITE INSULATORS:

Polymeric Insulators shall be designed to meet the high quality, safety and reliability and are capable of withstanding a wide range of environmental conditions. Polymeric Insulators shall consist of 3 parts, at least two of which are insulating parts:

15.1.9.1 Core : The internal insulating part 15.1.9.2 Housing : The external insulating part 15.1.9.3 Metal end fittings 15.1.9.1 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. Glass fibers shall be Boron free electrically corrosion resistant (ECR) glass fiber or Boron free E-Glass and shall exhibit both high electrical integrity and high resistance to acid corrosion. The matrix of the FRP rod shall be Hydrolysis resistant. The FRP rod shall be manufactured through Pultrusion process. The FRP rod shall be void free.

15.1.9.2 HOUSING: The FRP rod shall be covered by a seamless sheath of a silicone elastomeric compound or silicone alloy compound of a thickness of 3 mm minimum. It shall be one-piece housing using Injection Molding Principle to cover the core. The elastomer housing shall be designed to provide the necessary creepage distance and protection against environmental influences. Housing shall conform to the requirements of IEC: 61109/92-93 with latest amendments.

15.1.9.3 WEATHERSHEDS: The composite polymer weather sheds made of a silicone elastomeric compound or silicone alloy compound shall be firmly bonded to the sheath, vulcanized to the sheath or molded as part of the sheath and shall be free from imperfections It should protect the FRP rod against environmental influences, external pollution and humidity. The weather sheds should have silicon content of minimum 30% by weight. The strength of the weather shed to



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sheath interface shall be greater than the tearing strength of the polymer. The interface, if any, between sheds and sheath (housing) shall be free from voids.

15.1.9.4 METAL END FITTINGS: End fitting transmit the mechanical load to the core. They shall be made of spheroidal graphite cast iron, malleable cast iron or forged steel or aluminum alloy. They shall be connected to the rod by means of a controlled compression technique. Metal end fittings shall be suitable for ball & socket hardwares of respective specified mechanical load and shall be hot dip galvanized after, all fittings have been completed. The material used in fittings shall be corrosion resistant. As the main duty of the end fittings is the transfer of mechanical loads to the core the fittings should be properly attached to the core by a coaxial or hexagonal compression process & should not damage the individual fibers or crack the core. The gap between fitting and sheath shall be sealed by a flexible silicone elastomeric compound or silicone alloy compound sealant. System of attachment of end fitting to the rod shall provide superior sealing performance between housing, i.e., seamless sheath and metal connection. The sealing must be moisture proof. The dimensions of end fittings of insulators shall be in accordance with the standard dimensions stated in IEC: 60120/ IS: 2486 - Part-II /1989.

15.1.10 WORKMANSHIP: 15.1.10.1 All the materials shall be of latest design and conform to the best engineering

practices adopted in the high voltage field. Contractors shall offer only such insulators as are guaranteed by them to be satisfactory and suitable for continued good service in power transmission lines.

15.1.10.2 The design, manufacturing process and material control at various stages shall be such as to give maximum working load, highest mobility, best resistance to corrosion, good finish and elimination of sharp edges and corners.

15.1.10.3 The design of the insulators shall be such that stresses due to expansion and contraction in any part of the insulator shall not lead to deterioration.

15.1.10.4 The core shall be sound and free of cracks and voids that may adversely affect the insulators.

15.1.10.5 Weather sheds shall be uniform in quality. They shall be clean, sound, smooth and shall be free from defects and excessive flashing at parting lines.

15.1.10.6 End fittings shall be free from cracks, seams, shrinks, air holes and rough



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edges. End fittings should be effectively sealed to prevent moisture ingress; effectiveness of sealing system must be supported by test documents. All surfaces of the metal parts shall be perfectly smooth without projecting points or irregularities, which may cause corona. All load bearing surfaces shall be sooth and uniform so as to distribute the loading stresses uniformly.

15.1.10.7 All ferrous parts shall be hot dip galvanized to give a minimum average coating of zinc equivalent to 610 gm/sq. m. or 87 micron thickness and shall be in accordance with the requirement of IS: 4759. The zinc used for galvanizing shall be of purity 99.5% as per IS: 4699. The zinc coating shall be uniform, adherent, smooth, reasonably bright continuous and free from imperfections such as flux, ash rust stains, bulky white deposits and blisters. The galvanized metal parts shall be guaranteed to withstand at least four successive dips each lasting for one (1) minute duration under the standard preece test. The galvanizing shall be carried out only after any machining.

15.1.11 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 contractor shall submit a certificate for the same. The design & type test reports submitted shall not be more than five years old.

15.1.11.1 DESIGN TESTS: For polymeric insulators, it is essential to carry out design test as per clause No.: 4.1 of IEC: 61109 / 92-93 with latest amendments. The design tests are intended to verify the suitability of the design, materials and method of manufacture (technology). When a composite insulator is submitted to the design tests, the result shall be considered valid for the whole class of insulators, which are represented by the one tested and having the following characteristics:

15.1.11.1.1 Same materials for the core, and sheds and same manufacturing method. 15.1.11.1.2 Same material of the fittings, the same design, the same method of

attachment. 15.1.11.1.3 Same or greater layer thickness of the shed material over the core

(including a sheath where used). 15.1.11.1.4 Same or smaller ratio of the highest system voltage to insulation length. 15.1.11.1.5 Same or smaller ratio of all mechanical loads to the smallest core diameter

between fittings. 15.1.11.1.6 Same or greater diameter of the core.



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The tested composite insulators shall be identified by a drawing giving all the dimensions with the manufacturing tolerances. Manufacturer should submit test reports for design tests as per IEC: 61109 (Clause No.: 5). Additionally following tests shall be carried out or reports for the tests shall be submitted after award of contract: UV Test: The test shall be carried out in line with clause No.: 7.2 of ANSI C

29.13.

15.1.11.2 TYPE TESTS: The type tests are intended to verify the main characteristics of a composite insulator. The type tests shall be applied to composite insulators, the class of which has passed the design tests. Following Type test shall be conducted on a suitable number of individual insulator units, components, materials or complete strings:

Sl. No.

Description of Type Test Procedure / Standard

1. Dry lightning impulse withstand voltage test As per IEC: 61109(Clause 6.1) 2. Wet power frequency test As per IEC: 61109(Clause 6.2) 3. Mechanical load-time test As per IEC: 61109(Clause 6.4) 4. Radio interference test As per IEC 61109(Clause 6.5) revised 5. Recovery of Hydrophobicity test Annexure: B This test may be repeated every 3

yrs by the manufacturer 6. Chemical composition test for silicon content Annexure: B Or any other test method

acceptable to the Employer 7. Brittle fracture resistance test Annexure – B

The Contractor shall submit type test reports as per IEC: 61109. Additional type tests required if any shall be carried out by the manufacturer, after award of contract for which no additional charges shall be payable. In case, the tests have already been carried out, the manufacturer shall submit reports for the same.

15.1.11.3 ACCEPTANCE TESTS:

The test samples after having withstood the routine test shall be subject to the following acceptance tests in order indicated below:



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15.1.11.3.1 Verification of dimensions : Clause No.: 7.2 of IEC: 61109 15.1.11.3.2 Verification of the locking system : Clause No.: 7.3 of IEC: 61109

(If applicable) 15.1.11.3.3 Verification of tightness of the

Interface between end fittings & Insulator housing: Clause No. : 7.4 of IEC: 61109 (amendment

1of 1995) 15.1.11.3.4 Verification of the specified

Mechanical load : Clause No.: 7.4 of IEC: 61109 (Amendment 1of 1995)

15.1.11.3.5 Galvanizing test : IS: 2633/IS: 6745 15.1.11.4 ROUTINE TESTS:

Sl. No.

Description Standard

1. Identification of marking As per IEC: 61109 Clause 8.1 2. Visual Inspection As per IEC: 61109 Clause 8.2 3. Mechanical routine test As per IEC: 61109 Clause 8.3

Every polymeric insulator shall withstand mechanical routine test at ambient temperature tensile load at RTL corresponding to at least 50% of the SML for at least 10 sec.

15.1.11.5 TESTS DURING MANUFACTURE:

Following tests shall also be carried out on all components as applicable:

15.1.11.5.1 Chemical analysis of zinc used for galvanizing 15.1.11.5.2 Chemical analysis, mechanical, metallographic test and magnetic particle

inspection for malleable castings 15.1.11.5.3 Chemical analysis, hardness tests and magnetic particle inspection for

forgings.

15.1.11.6 SAMPLE BATCH FOR TYPE TESTING: The Manufacturer shall offer material for sample selection for type testing only after getting Quality Assurance Plan approved by Employer. The sample for type testing will be manufactured strictly in accordance with the approved Quality Assurance Plan.



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15.1.12 QUALITY ASSURANCE PLAN: 15.1.12.1 The Manufacturer shall submit following information:

15.1.12.1.1 Test certificates of the raw materials and bought out accessories. 15.1.12.1.2 Statement giving list of important raw material, their grades along with

names of sub-Manufacturers for raw materials, list of standards according to which the raw materials are tested. List of tests normally carried out on raw materials in presence of Manufacturer’s representative.

15.1.12.1.3 List of manufacturing facilities available. 15.1.12.1.4 Level of automation achieved and lists of areas where manual processing

exists. 15.1.12.1.5 List of areas in manufacturing process, where stage inspections are

normally carried out for quality control and details of such tests and inspections.

15.1.12.1.6 List of testing equipments available with the Manufacturer for final testing of equipment along with valid calibration reports.

15.1.12.1.7 The contractor shall submit Manufacturing Quality Assurance Plan (QAP) for approval & the same shall be followed during manufacture and testing.

15.1.12.1.8 The contractor shall submit the routine test certificates of bought out raw materials/accessories and central excise passes for raw material at the time of inspection.

15.1.12.1.9 The Employer’s representative shall at all times be entitled to have access to the works and all places of manufacture, where insulator, and its component parts shall be manufactured and the representatives shall have full facilities for unrestricted inspection of the Manufacturer’s and sub-Manufacturer’s works, raw materials, manufacture of the material and for conducting necessary test as detailed herein.

15.1.12.1.10 The material for final inspection shall be offered by the contractor only under packed condition. The Owner shall select samples at random from the packed lot for carrying out acceptance tests. The lot offered for inspection shall be homogeneous and shall contain insulators manufactured in 3-4 consecutive weeks.

15.1.12.1.11 The contractor shall keep the Owner informed in advance of the time of starting and the progress of manufacture of material in their various stages so that arrangements could be made for inspection.

15.1.12.1.12 No material shall be dispatched from its point of manufacture before it has been satisfactorily inspected and tested unless the Employer in writing waives off the inspection. In the later case also, the material shall be



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dispatched only after satisfactory testing specified herein has been completed.

15.1.12.1.13 The acceptance of any quantity of material shall in no way relieve the Manufacturer & contractor of his responsibility for meeting all the requirements of the specification and shall not prevent subsequent rejection, if such material are later found to be defective

15.1.13 TEST CERTIFICATE:

The contractor shall furnish detailed type test reports of the offered composite insulators as per clause No.: 8.2 of the Technical Specifications at the NABL approved laboratories to prove that the composite insulators offered will meet the requirements of the specification. These type tests should have been carried out within five years prior to the date of opening of bid. The Owner reserves right to demand repetition of some or all the Type Test in presence of Employer’s representative. In case the unit fails in the Type Tests, the complete supply shall be rejected.

15.1.14 TESTING FACILITIES: The contractor must clearly indicate what testing facilities are available in the works of the manufacturer and whether facilities are adequate to carry out all routine & acceptance Tests. These facilities should be available to Owner's Engineers if deputed or carry out or witness the tests in the manufacturer works. The insulators shall be tested in accordance with the procedure detailed in IEC: 61109 / 92-93 with latest amendments.

15.1.15 DRAWINGS: 15.1.15.1 The contractor shall furnish full description and illustration of the material

offered. 15.1.15.2 The contractor shall furnish the outline drawing (3 copies) of each insulator

unit including a cross sectional view of the long rod insulator unit. The drawing shall include but not be limited to the following information:

15.1.15.2.1 Long rod diameter with manufacturing tolerances 15.1.15.2.2 Minimum Creepage distance with positive tolerance 15.1.15.2.3 Protected creepage distance 15.1.15.2.4 Eccentricity of the long rod unit 15.1.15.2.5 Axial run out 15.1.15.2.6 Radial run out 15.1.15.2.7 Unit mechanical and electrical characteristics



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15.1.15.2.8 Size and weight of ball and socket 15.1.15.2.9 Weight of composite long rod units 15.1.15.2.10 Materials 15.1.15.2.11 Identification mark 15.1.15.2.12 Manufacturer’s catalogue number 15.1.15.3 After placement of award, the contractor shall submit fully dimensioned

insulator crate drawing for different type of insulators for approval of the Owner.

15.1.16 TESTS ON INSULATOR UNITS: 15.1.16.1 Sample Procedure for testing of insulators shall be as per clause No.: 7.1

to 7.6 of IEC: 61109 for Acceptance & Routine Tests: For the sampling tests, two samples are used, E1and E2. The sizes of these samples are indicated in the table below.

Lot S Sample Size

E1 E2 N < 300 Subject to agreement

300 < N < 2000 4 3 2000< N < 5000 8 4 5000< N < 10000 12 6

If more than 10000 insulators are concerned, they shall be divided into an optimum number of lots comprising between 2000 and 10000 insulators. The results of the tests shall be evaluated separately for each lot. The insulators shall be selected by the Owner’s representative from the lot at random. The samples shall be subjected to the applicable sampling tests. The sampling tests are:

15.1.16.1.1 Verification of dimensions : (E1 + E2) 15.1.16.1.2 Verification of the locking system : (E2) 15.1.16.1.3 Verification of tightness of the interface

Between End fittings & Insulator housing : (E2) 15.1.16.1.4 Verification of the specified

Mechanical load SML : (E1) 15.1.16.1.5 Galvanizing test : (E2)



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In the event of a failure of the sample to satisfy a test, the retesting procedure shall be as follows: If only one insulator or metal part fails to comply with the sampling tests, a new sample equal to twice the quantity originally submitted to the tests shall be subjected to retesting. The retesting shall comprise the test in which failure occurs. If two or more insulator or metal parts fail to comply with any of the sampling tests or if any failure occurs during the retesting, the complete lot is considered as not complying with this standard and shall be withdrawn by the manufacturer. Provided the cause of the failure can be clearly identified, the manufacturer may sort the lot to eliminate all the insulators with these defects. The sorted lot then being resubmitted for testing. The number then selected shall be three times the first chosen quantity for tests. If any insulators fail during this retesting, the complete lot is considered as not complying with this standard and shall be withdrawn by the manufacturer.

15.1.16.2 Verification of dimensions (E1 + E2):

Tolerance in dimension is as per Indian standards. Verification of the locking system (E2). This test applies only to the insulators equipped with socket coupling as specified by IEC: 120 & is performed according to IEC: 383.

15.1.16.3 Verification of tightness of the interface between end fittings & Insulator housing (E2): One insulator selected randomly from the sample E2, shall be subjected to crack indication by dye penetration in accordance with ISO: 3452 on the housing in the zone embracing the complete length of the interface between the housing and metal fitting and including an additional area sufficiently extended beyond the end of the metal part. The indication shall be performed in the following way.

15.1.16.3.1 The surface shall be properly pre-cleaned with the cleaner. 15.1.16.3.2 The penetrant which shall act during 20 minutes shall be applied on the

cleaned surface. 15.1.16.3.3 Within 5 minutes after the application of the penetrant, the insulator shall

be subjected at the ambient temperature, to a tensile load of 70 % of the SML, applied between the metal fittings. The tensile load shall be increased rapidly but smoothly from zero up to 70 % of the SML and then



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maintained at this value for 1 minute. 15.1.16.3.4 The surface shall be cleaned with the excess penetrant removed and dried. 15.1.16.3.5 The developer shall be applied if necessary. 15.1.16.3.6 The surface shall be inspected.

Some housing materials may be penetrated by the penetrant. In such cases evidence shall be provided to validate the interpretation of the results. After the 1 min. test at 70 % of the SML, if any cracks occur, the housing and, if necessary, the metal fittings and the core shall be cut, perpendicularly to the crack in the middle of the widest of the indicated cracks, into two halves. The surface of the two halves shall then be investigated for the depth of the cracks.

15.1.16.4 Verification of the specified mechanical load SML:

The insulators of the sample E1 shall be subjected at ambient temperature to a tensile load applied between the couplings. The tensile load shall be increased rapidly but smoothly from zero to approximately 75% of the SML and then be gradually increased to the SML in a time between 30 sec. to 90 sec. If 100 % of the SML is reached in less than 90s, the load (100 % of the SML) shall be maintained for the remainder of the 90s. (This test is considered to be equivalent to a 1min withstand test at the SML). The insulators have passed the test at 13.4 & 13.5 above if:

15.1.16.4.1 No failure (breakage or complete pull out of the core, or fracture of the

metal fitting) occurs either during the 1 min. 70 % withstand test (a) or

15.1.16.4.2 During the 1 min.100 % withstand test (b). 15.1.16.4.3 No cracks are indicated after the dye penetration method described above.

The investigation of the halves described shows clearly that the cracks do not reach the core.

15.1.16.5 Galvanizing Test:

This test shall be performed according to IS: 2633/IS: 6745 on galvanized parts.

15.1.16.6 RIV Test (Dry): The insulator string along with complete hardware fittings shall have a radio interference voltage level below 100 micro volts at one MHz when subjected to 50 Hz AC voltage of 10 KV & 30 KV for 11 KV & 33 KV class insulators respectively under dry condition. The test procedure shall be in accordance



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with IS: 8263 /IEC: 437/CISPR 18-2.

15.1.16.7 Brittle Fracture Resistance Test: Brittle fracture test shall be carried out on naked rod along with end fitting by applying “1n HNO3 acid” (63 g conc. HNO3 added to 937 g water) to the rod. The rod should be held 80% of SML for the duration of the test. The rod should not fail within the 96-hour test duration. Test arrangement should ensure continuous wetting of the rod with Nitric acid.

15.1.16.8 Recovery of Hydrophobicity & Corona Test: The test shall be carried out on 4 mm thick samples of 5 cm x 7 cm.

15.1.16.8.1 The surface of selected samples shall be cleaned with isopropyl alcohol.

Allow the surface to dry and spray with water. Record the Hydrophobicity classification in line with STRI guide for Hydrophobicity classification. Dry the sample surface.

15.1.16.8.2 The sample shall be subjected to mechanical stress by bending the sample over a ground electrode. Corona is continuously generated by applying 12 KV to a needle like electrode placed 1 mm above the sample surface. The test shall be done for 100 hrs.

15.1.16.8.3 Immediately after the corona treatment, spray the surface with water and record the HC classification. Dry the surface and repeat the corona treatment as at clause 2 above.

Note: HC classification. Repeat the cycle for 1000 hrs. or until an HC of 6

or 7 is obtained. Dry the sample surface. 15.1.16.8.4 Allow the sample to recover and repeat hydrophobicity measurement at

several time intervals. Silicone rubber should recover to HC 1 – HC 2 within 24 to 48 hours, depending on the material and the intensity of the corona treatment.

14.11.16.10 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. The test may be carried out at CPRI or any other NABL accredited laboratory.



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15.1.17 MARKINGS: 15.1.17.1 Each insulator shall be legibly and indelibly marked with the following details

as per IEC: 61109: 15.1.17.1.1 Name or trademark of the manufacturer 15.1.17.1.2 Voltage & Type 15.1.17.1.3 Month and year of manufacturing 15.1.17.1.4 Min. failing load/guaranteed mechanical strength in kilo Newton followed

by the word ‘KN’ to facilitate easy identification 15.1.17.1.5 ‘ELEPHANT CORRIDOR’, ‘Employer Name’ Marking 15.1.17.2 One 10 mm thick ring or 20 mm thick spot of suitable quality of paint shall be

marked on the end fitting of each composite long rod of particular strength for easy identification. The paint shall not have any deteriorating effect on the insulator performance. Following codes shall be used as identification mark:

For 90 KN long rod units: Red

15.1.18 PACKING: 15.1.18.1 All insulators shall be packed in strong corrugated box of min. 7 ply duly

paletted or wooden crates. The gross weight of the crates along with the material shall not normally exceed 100 Kg to avoid hackling problem. The crates shall be suitable for outdoor storage under wet climate during rainy season.

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

15.1.18.3 Suitable cushioning, protective padding, or Dunn age or spacers shall be provided to prevent damage or deformation during transit and handling.

15.1.18.4 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 being lost or wrongly dispatched on account of faulty packing and faulty or illegible markings. Each wooden case /crate /corrugated box shall have all the markings stenciled on it in indelible ink.

15.1.18.5 The Manufacturer shall provide instructions regarding handling and storage precautions to be taken at site.

15.1.19 GUARANTEE:

The contractor of insulators shall guarantee overall satisfactory performance of the insulators. The contractor shall furnish the guaranteed technical particulars in the below mentioned format.



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GUARANTEED TECHNICAL PARTICULARS OF 11 KV(90 KN) POLYMER TYPE LONG ROD STRAIN

COMPOSITE INSULATOR UNIT

Name of The Bidder: Manufacturer's Name & Address: Place of Manufacture: Sl. No.

Parameter Name Unit Parameter Type Bidders Offer

1. Type of insulator 90 KN Polymer Type Long Rod strain Insulator

2. Standard according to which the insulators manufactured and tested

IEC: 61109

3. Name of material used in manufacture of the insulator with class/grade

3.1 Material of core (FRP rod) a) E-glass or ECR-glass b) Boron content Free

3.2 Material of housing & weather sheds Text (Silicon content by weight)

Silicon (Si): 45.6%

3.3 Material of end fittings SGI 3.4 Sealing compound for end fitting RTV Silicon 4. Colour GRAY / RED 5. Electrical characteristics: 5.1 Nominal system voltage KVrms 11 5.2 Highest system voltage KVrms 12 5.3 Dry Power frequency withstand voltage KVrms 70 5.4 Wet Power frequency withstand voltage KVrms 40 5.5 Dry flashover voltage KVrms >70 5.6 Wet flash over voltage KVrms >40 5.7 Dry lighting impulse withstand voltage a) Positive KVPeak 80 b) Negative KVPeak 80 5.8 Dry lighting impulse flashover voltage a) Positive KVPeak >80 b) Negative KVPeak >80 5.9 RIV at 1 MHz when energized at 10 KV/ 30 KV (rms) under

dry condition µV 30



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6. Creepage distance (Min.) mm 320 6.1 Center to center distance between ball & socket) mm 300 6.2 Shed diameter mm 100 7. Mechanical characteristics: 7.1 Minimum failing load KN 90 8. Dimensions of insulator: 8.1 Weight Kg. 1.25

approx.

8.2 Dia. of FRP rod mm 20 8.3 Length of FRP rod mm 240 8.4 Dia. of weather sheds mm 92 8.5 Thickness of housing mm 3.0 8.6 Dry arc distance mm 170 8.7 Dimensioned drawings of insulator (including weight with

tolerances in weight) enclosed Yes/No

9. Method of fixing of sheds to housing (Specify): Single mould or Modular construction (Injection molding / compression molding)

10. No. of weather sheds min. 3 11. Type of sheds: 11.1

Aerodynamic Yes/No Yes

11.2

With under ribs

12. Packing details: 12.1

Type of packing

12.2

No. of insulators in each pack

12.3

Gross weight of package

13. Design Test Report, Type Test Report of insulator enclosed Yes / No 14. The insulator shall have ‘W’ type phosphor bronze security clip

for ball & socket portion of insulator Yes / No

15. Any other particulars which the Contractor / Manufacturer may like to give



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GUARANTEED TECHNICAL PARTICULARS OF 11 KV (10 KN) POLYMER TYPE COMPOSITE PIN

INSULATOR UNIT



1. Type of insulator 10 KN Polymer Type Pin Insulator


IEC: 61109




Silicon (Si): 45.6%

3.3 Material of end fittings SGI 3.4 Sealing compound for end fitting RTV Silicon 4. Colour GRAY / RED 5. Electrical characteristics: 5.1 Nominal system voltage KVrms 11 5.2 Highest system voltage KVrms 12 5.3 Dry Power frequency withstand voltage KVrms 70 5.4 Wet Power frequency withstand voltage KVrms 40 5.5 Dry flashover voltage KVrms >70 5.6 Wet flash over voltage KVrms >40 5.7 Dry lighting impulse withstand voltage a) Positive KVPeak 80 b) Negative KVPeak 80 5.8 Dry lighting impulse flashover voltage a) Positive KVPeak >80 b) Negative KVPeak >80 5.9 RIV at 1 MHz when energized at 10 KV/ 30 KV (rms) under




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6. Creepage distance (Min.) mm 320 6.1 Center to center distance between ball & socket) mm 300 6.2 Shed diameter mm 100 7. Mechanical characteristics: 7.1 Minimum failing load KN 10 8. Dimensions of insulator: 8.1 Weight Kg. 1 approx. 8.2 Dia. of FRP rod mm 20 8.3 Length of FRP rod mm 240 8.4 Dia. of weather sheds (100mm) mm 92 8.5 Thickness of housing mm 3.0 8.6 Dry arc distance mm 170 8.7 Dimensioned drawings of insulator (including weight with



10. No. of weather sheds min. 3 11. Type of sheds: 11.1


11.2

With under ribs


Type of packing

12.2


12.3


13. Design Test Report, Type Test Report of insulator enclosed Yes / No 14. The insulator shall have ‘W’ type phosphor bronze security clip


15. Any other particulars which the Contractor / Manufacturer may like to give



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GUARANTEED TECHNICAL PARTICULARS OF 33 KV (90 KN) POLYMER TYPE LONG ROD STRAIN

COMPOSITE INSULATOR UNIT



1. Type of insulator 90 KN Polymer Type Long Rod strain Insulator


IEC: 61109




Silicon (Si): 45.6%

3.3 Material of end fittings SGI 3.4 Sealing compound for end fitting RTV Silicon 4. Colour GRAY / RED 5. Electrical characteristics: 5.1 Nominal system voltage KVrms 33 5.2 Highest system voltage KVrms 36 5.3 Dry Power frequency withstand voltage KVrms 125 5.4 Wet Power frequency withstand voltage KVrms 102 5.5 Dry flashover voltage KVrms >125 5.6 Wet flash over voltage KVrms >125 5.7 Dry lighting impulse withstand voltage: a) Positive KVPeak 220 b) Negative KVPeak 220 5.8 Dry lighting impulse flashover voltage: a) Positive KVPeak >220 b) Negative KVPeak >220 5.9 RIV at 1 MHz when energized at 10 KV/ 30 KV (rms) under




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6. Creepage distance (Min.) mm 900 6.1 Center to center distance between ball & socket) mm 550 6.2 Shed diameter mm 108 7. Mechanical characteristics 7.1 Minimum failing load KN 90 8. Dimensions of insulator: 8.1 Weight Kg. 2.6 Kg.

approx.

8.2 Dia. of FRP rod mm 24 8.3 Length of FRP rod mm 440 8.4 Dia. of weather sheds mm 108 8.5 Thickness of housing mm 3 8.6 Dry arc distance mm 382 8.7 Dimensioned drawings of insulator (including weight with



10. No. of weather sheds 11. Type of sheds: 11.1


11.2

With underribs


Type of packing

12.2


12.3


13. Design Test Report, Type Test Report of insulator enclosed 14. The insulator shall have ‘W’ type phosphor bronze security clip


15. Any other particulars which the Manufacturer may like to give



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GUARANTEED TECHNICAL PARTICULARS OF 33 KV (10 KN) POLYMER TYPE COMPOSITE PIN

INSULATOR UNIT



1. Type of insulator 10 KN Polymer Type Pin Insulator


IEC: 61109




Silicon (Si): 45.6%

3.3 Material of end fittings SGI 3.4 Sealing compound for end fitting RTV Silicon 4. Colour GRAY / RED 5. Electrical characteristics: 5.1 Nominal system voltage KVrms 33 5.2 Highest system voltage KVrms 36 5.3 Dry Power frequency withstand voltage KVrms 125 5.4 Wet Power frequency withstand voltage KVrms 102 5.5 Dry flashover voltage KVrms >125 5.6 Wet flash over voltage KVrms >125 5.7 Dry lighting impulse withstand voltage: a) Positive KVPeak 220 b) Negative KVPeak 220 5.8 Dry lighting impulse flashover voltage: a) Positive KVPeak >220 b) Negative KVPeak >220 5.9 RIV at 1 MHz when energized at 10 KV/ 30 KV (rms) under




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6. Creepage distance (Min.) mm 900 6.1 Center to center distance between ball & socket) mm 550 6.2 Shed diameter mm 108 7. Mechanical characteristics 7.1 Minimum failing load KN 10 8. Dimensions of insulator: 8.1 Weight Kg. 2 Kg.

approx.

8.2 Dia. of FRP rod mm 24 8.3 Length of FRP rod mm 440 8.4 Dia. of weather sheds mm 108 8.5 Thickness of housing mm 3 8.6 Dry arc distance mm 382 8.7 Dimensioned drawings of insulator (including weight with



10. No. of weather sheds 11. Type of sheds: 11.1


11.2

With under ribs


Type of packing

12.2


12.3


13. Design Test Report, Type Test Report of insulator enclosed 14. The insulator shall have ‘W’ type phosphor bronze security clip


15. Any other particulars which the Manufacturer may like to give



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16. Modification to Cl. No.: 47.0 of Section-III of Technical Specification with corresponding GTP of above referred Tender Specification:

Sl. No.


1. 3 x 50 sq. mm + 1 x 35 sq. mm insulated neutral cum messenger + 1 x 16 sq. mm LT AERIAL BUNCHED CABLES

3 x 50 sq. mm + 1 x 35 sq. mm bare messenger + 1 x 16 sq. mm LT AERIAL BUNCHED CABLES

As per Modified Tender Norms, the technical specification & GTP of LT AERIAL BUNCHED CABLES is enclosed herewith. 16.1 LT AERIAL BUNCHED CABLES:

(APPLICABLE FOR LT AB CABLE WITH XLPE INSULATION ONLY) 16.1.1 SCOPE: 16.1.1.1 This specification covers XLPE insulated Aluminum cable twisted over a

central bare Aluminum Alloy messenger wire for use of L.T. Over-Headlines in Rural Electrification System. The Aerial Bunched cable and messenger wire should be confirming to IS.

16.1.1.2 Sizes of the cable: 3 x 50 sq. mm + 1 x 35 sq. mm messenger + 1 x 16 sq.

mm 16.1.1.3 The executant contractor shall be allowed to procure 3 x 50 sq. mm + 1 x

35 sq. mm messenger + 1 x 16 sq. mm LT AB CABLE for this project only from the selected vendors of WESCO Utility, i.e., M/s. Havels India Ltd., Alwar, M/s. POLYCAB India Ltd., New Delhi & M/s. APAR Industries Ltd., Mumbai only.

16.1.1.4 The executant contractor has to submit the GTP & drawings for 3 x 50 sq. mm + 1 x 35 sq. mm messenger + 1 x 16 sq. mm LT AB CABLE from the selected vendors of WESCO Utility, i.e., M/s. Havels India Ltd., Alwar, M/s. POLYCAB India Ltd., New Delhi, M/s. Genus Electrotech Ltd., Gujarat & M/s. APAR Industries Ltd., Mumbai only for accord of approval before procurement.

16.1.2 RATED VOLTAGE:

The rated voltage of the AB cables shall be 1100 volts.



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16.1.3 APPLICABLE STANDARDS: Unless otherwise stipulated in this specification the following Standards shall be applicable.

16.1.3.1 IS: 14255/1995: ABC cables 1100 volts 16.1.3.2 IS: 8130/1984: Conductors for insulated cables 16.1.3.3 IS: 398/Pt. IV/1994: Aluminium alloy conductor 16.1.3.4 IS: 10418/1982: Drums for electric cables 16.1.4 GENERAL:

The AB cable covered under this specification should be suitable for use on three phase, 4 wire earthed system for working voltage up to 1100 V. It should confirm the relevant standards stated above and others if applicable. The phase conductor shall be 50 mm² XLPE insulated and 16 mm² XLPE insulated whereas messenger conductor should be Bare heat treated aluminium silicon containing 0.5% magnesium and approximately 0.5% silicon confirming to IS: 398 (Part-IV): 1979 and its latest amendment, if any.

16.1.5 PHASE & NEUTRAL CONDUCTORS: 16.1.5.1 The phase conductor shall be provided cross linked poly ethylene insulation

applied by extrusion. The thickness of insulation shall not be less than 1.2 mm up to 35 mm² and shall not be less than 1.5 mm for above 35 mm² at any point and insulation shall be so applied that it fits closely on the conductor and it shall be possible to remove it without damaging the conductor. The insulated conductors shall generally conform to the standards IS: 14255: 1995.

16.1.5.2 The phase conductors shall be provided with one, two & three ‘ridges’ for easy identification.

16.1.5.3 The tensile strength of the aluminum wire used in the conductor shall not be less 90 N/mm².

16.1.5.4 The standard size and technical characteristics of the phase conductors shall be as shown in the Table No.: 1.

TABLE: 1

Nominal Sectional area

in mm²

No. of Strands

Diameter of Compacted

conductor in mm

Approx. Mass in Kg/KM.

Max. DC Resistance

20 ºC (Ω/Km)

Insulation Thickness

in mm 16 7 4.4 42 1.9 1.2 50 7 7.9 127 0.641 1.5



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NOTE: 16.1.5.4.1 The resistance values given in col. 5 are the max. permissible. 16.1.5.4.2 Tolerance of + 5% is allowable on dimension. 16.1.6 MESSENGER WIRE: 16.1.6.1 The bare messenger wire shall be of aluminium alloy generally confirming to

IS: 398/Pt. IV/94 composed of 7 strands and shall be suitable compacted to have smooth round surface to avoid damages to the overall insulation of phase & neutral conductor twisted around the messenger.

16.1.6.2 There shall be no joint in any wire of the stranded messenger Conductor except these made in the base rod or wires before final drawing.

16.1.6.3 The sizes and other technical characteristics of the messenger wire shall be as given in the Table No.2.

TABLE –2

Nominal Sectional

Area in mm² No. of strands Diameter of Compacted

Conductor in mm Approx. Mass

Kg./Km Max. DC

Resistance 35 7 6.8 95 0.986

NOTE: While limiting values in col.: 3 is to be guaranteed a tolerance of + 5%

will be permissible. 16.1.7 XLPE INSULATION:

The insulation shall generally confirm to IS: 7098(Part-II): 85.

Sl. No.

Properties Requirement

1. Tensile Strength 12.5 N / mm² Min 2. Elongation at break 200% Min. 3. Ageing in air over a) Treatment: Temperature & duration 135 ± 3 ºC & 7 days b) Tensile strength variation ± 25% Max. c) Elongation variation ± 25% Max.

4. a) Hot Set

Treatment temperature 200 ± 3 ºC Time 15 minutes



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Under load, mechanical stresses 20 N /cm² b) Elongation under load 175% max c) Permanent elongation (set) after cooling 15% Max 5. Shrinkage a) Treatment temperature duration 130 ± 3 ºC

For 1 hour b) Shrinkage 4% 6. Water absorption (Gravimetric) a) Treatment– Temp. 85 ± 2 ºC b) Duration 14 days c) Water absorbed 1 mg. / cm² max.

16.1.8 TYPE TEST: 16.1.8.1 Test for Phase/Street Light Conductors:

TEST DETAILS As per IS

Tensile Test IS: 8130 Wrapping Test IS: 8130

Conductor Resistance Test IS: 8130

16.1.8.2 Test for Messenger:

TEST DETAILS As per IS Breaking load test (to be made on finished conductor) IS: 398/ Pt. IV/ 1994 with latest revision

Elongation test IS: 398 / Pt. IV/1994 Resistance test IS: 398 / Pt. IV /1994

If insulated, the test of insulation As per relevant IS

16.1.8.3 Physical test for XLPE insulation: 16.1.8.3.1 Tensile strength and Elongation at break 16.1.8.3.2 Ageing in air oven 16.1.8.3.3 Hot set test 16.1.8.3.4 Shrinkage test 16.1.8.3.5 Water absorption (Gravimetric) 16.1.8.3.6 Carbon black 16.1.8.3.7 Content 16.1.8.3.8 Dispersion



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16.1.8.3.9 Test for thickness of insulation 16.1.8.3.10 Insulation Resistance (Volume Resistivity ) Test 16.1.8.3.11 High Voltage Test Note: The Manufacturer should submit the entire above type test of Govt. of India’s

approved Laboratory along with their offer. 16.1.8.4 Optional Test:

Bending test on the completed cable: Bending test shall be performed on a sample of complete cable. The sample shall be bent around a test mandrel at room temperature for at least one complete turn. It shall then be unwound and the process shall be repeated after turning the sample around its axis 1800. The cycle of this operation shall be then repeated twice.

The diameter of mandrel shall be 10 (D+d). Where

D = Actual diameter of cable (i.e., the min. circumscribing diameter in mm)

D = Actual diameter of the phase conductor in mm

No cracks visible to the naked eye are allowed. 16.1.9 ACCEPTANCE TESTS:

Tests for Phase / Street Light Conductors:

16.1.9.1 Tensile test (for Phase / Street light conductor) 16.1.9.2 Wrapping test (for Phase / Street light conductor) 16.1.9.3 Breaking load test for messenger conductor 16.1.9.4 Elongation test for messenger conductor 16.1.9.5 Conductor Resistance test 16.1.9.6 Test for thickness of insulation 16.1.9.7 Tensile strength and elongation at break test 16.1.9.8 Hot set test (For XLPE insulation) 16.1.9.9 Insulation Resistance test 16.1.9.10 High voltage test



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16.1.10 PACKING & MARKING: 16.1.10.1 The LT AB cable shall be wound in non returnable drums conforming to IS:

10418/1982 “Specification for Reels and Drums for bare wire” of the latest version thereof. The drums shall be marked with the following:

16.1.10.1.1 Manufacturers name 16.1.10.1.2 Trade mark if any 16.1.10.1.3 Drum number 16.1.10.1.4 Size of Conductor 16.1.10.1.5 Size of Messenger 16.1.10.1.6 Voltage grade 16.1.10.1.7 Number of lengths of pieces of Cable in each drum 16.1.10.1.8 Gross mass of the packing 16.1.10.1.9 Net mass of Cable 16.1.10.1.10 ISI mark 16.1.10.2 The drums shall be of such a construction as to assure delivery of conductor

in field free from displacement and damage and should be able to withstand all stresses due to handling and the stringing operation so that cable surface not dented, scratched or damaged in any way during transport and erection. The cable shall be properly lugged on the drums

16.1.10.3 The cable drums should be suitable for wheel mounting. 16.1.11 STANDARD LENGTH: 16.1.11.1 The standard length of drum will be 500 meter with + 5% 16.1.11.2 Non-standard Length:

16.1.11.2.1 Non standard length not less than 50% of the standard length shall be

accepted to the extent of 10% of the ordered quantity. 16.1.12 INSPECTION:

All tests and inspections shall be made at the place of manufacturer unless otherwise especially agreed upon by the manufacturer and purchaser at the time of purchase. The manufacturer shall afford the inspector representing the purchaser all reasonable facilities, without charge, to satisfy him that the material is being furnished in accordance with this specification.



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16.1.13 EXPERIENCE: The manufacturer must have some experience of manufacturer and supply of this cable to any Electricity Board. Copy of order executed and performance report may be submitted along with the offer.

16.1.14 TYPE TEST CERTIFICATES: The duly attested copy of Type Test Certificate of the offered sizes of AB cable, as per IS: 14255/1995 with latest amendment/revision may be submitted from any Govt. approved laboratory along with the offer. In absence of type test certificate, offer will be liable to be ignored/rejected without any further correspondence [at Purchaser’s (Employer) discretion]. Type Test Certificate shall not be more than Five Years Old from date of supply.

16.1.15 SUBMISSION OF ISI LICENSE FOR IS: 14255: 1995: The Manufacturer are required to submit duly attested photo copy of the valid ISI License up to the date of delivery for supply of these AB cables/wires and they should also submit GTP failing which, the offer would be ignored.

16.1.16 IMPORTANT: In absence of valid ISI License/GTP duly filled in/and copy of type test certificate of Govt. approved Laboratory, duly attested by authorized person, offer will be liable to be ignored without any further correspondence.

16.1.17 ISI MARKING: The material supplied shall be conforming to Indian Standard Specification and also with ISI marking as applicable and even after inspection of the lot, if the materials received at site is found without ISI marking, the lot shall be rejected and no further correspondence shall be entertained in this regard.



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GUARANTEED TECHNICAL PARTICULARS OF LT AERIAL BUNCHED CABLE (XLPE INSULATED)


Particulars Unit Confirmation Bidder’s Offer

1. Standards to which AB Cable confirms IS: 14255/ 1995

2. Cable drums/label shall bear ISI Mark Yes/No 3. ISI License for AB Cable of IS: 14255/1995 3.1 ISI License shall remain valid till order

completion Yes/No

4. Colour of XLPE Insulation: Black a) 3 x 50 + 1 x 35 (bare) + 1 x 16 Yes/No 5. Shape: Compacted Yes 6. Standard length acceptable mtr. 500 6.1 Allowable Tolerance ± 5 % 7. Non-Standard length 50% of standard length up

to 10% of ordered quantity Yes

8. Packing shall contain only one length Yes/No 9. Packing material: 9.1 Wooden drums duly painted As per IS:

10418/1982

a) 3 x 50 + 1 x 35 + 1 x 16 Yes/No 10. Embossing on cable & Marking on drum As per IS:

14255/1995

10.1 Marking on drum as follows: a) Purchaser’s Name b) Voltage Class Volts 1100 c) Year of manufacture d) Trade Mark 11. Conductor: a) For Phase 16 mm² & 50 mm² Alluminium As per IS:

8130/1984

b) For Messenger wire 35 mm² Alluminium Alloy As per IS:



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398/Pt.: IV/1994

12. Maximum Conductor resistance at 20 ºC: (i) For Conductor: a) 16 mm² Conductor Ω/KM 1.91 b) 50 mm² Conductor Ω/KM 0.641 (ii) For messenger conductor: (a) 35 mm² Conductor Ω/KM 0.986 13. XLPE Insulation thickness for AB Cable: (a) 3 x 50 mm² + 1 x 35 mm² + 1 x 16 mm² mm 1.5 14. Volume resistivity of insulation: (a) At 27 ºC (min.) Ω-cm 1 x 1013 (b) At 70 °C (min.) Ω-cm 1 x 1013 15. Tensile strength of Insulation & sheath (min.) N/mm² 12.5 16. Elongation at break of Insulation and Sheath

(min.) 200%

17. Overall tolerance in supply of ordered total quantity

percent ± 2%

18. Cable Conductor: Circular Compacted Yes/No 19. Type test certificate from NABL approved

Laboratory submitted Yes/No

19. Approximate weight of 1000 meters length (Weight in Kg.): (i) Size of cable Alluminium

Alloy XLPE Total

a) 3 x 50 mm² + 1 x 35 mm² + 1 x 16 mm²



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17. Modification to Cl. No.: 51.0 of Section-III of Technical Specification with corresponding GTP of above referred Tender Specification:

Sl. No.


1. SUSPENSION CLAMP FOR INSULATED NEUTRAL MESSENGER

SUSPENSION CLAMP FOR BARE MESSENGER

As per Modified Tender Norms, the technical specification & GTP of SUSPENSION CLAMP FOR BARE MESSENGER is enclosed herewith. 17.1 SUSPENSION CLAMP FOR BARE MESSENGER: 17.1.1 The clamp should be designed to hang LT AB cable with bare messengers.

17.1.1.1 The bare messengers should be fixed by an adjustable grip device. A movable

link should allow longitudinal and transversal movement of the clamp body. 17.1.1.2 No losable part in the process of clamping arrangement. 17.1.1.3 The clamp should conform to the standard NFC: 33040 or equivalent I.S, if

any. 17.1.1.4 The clamp and the link made of Polymer should provide an additional

insulation between the bare and the pole. 17.1.1.5 The clamps and movable links should be made of weather and UV resistant

glass fibre reinforced polymer. 17.1.1.6 Clamps should be fixed with pole by eye hook / bracket. Bracket should be

made of corrosion resistant alluminium alloy. 17.1.1.7 Ultimate tensile strength of the clamp should not be less than 4.3 KN for 35

sq. mm. messenger wire. 17.1.1.8 Maximum allowable load of the clamp should not be less than 15 KN for 35

sq. mm messenger wire. 17.1.2 Suspension Assembly is used for supporting an ABC by installation on the

messenger at an intermediate point of support such as a pole. It can accommodate small angles of deviation up to 30°.

17.1.3 Each Suspension Assembly shall consist of: 17.1.3.1 One number Suspension Bracket 17.1.3.2 One number moveable (articulated) connecting link 17.1.3.3 One number Suspension Clamp



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17.1.4 Suspension Assemblies shall be supplied in sets to ensure compatibility of the materials against corrosion or wear of rotating/moving parts.

17.1.5 Suspension Bracket of SA: 17.1.5.1 The Suspension Bracket shall be made from single piece alluminium alloy

suitable for attachment to a pole by either.

17.1.5.2 16 mm galvanized steel bolt or 17.1.5.3 Two stainless steel straps 17.1.5.4 The Suspension Bracket shall be provided with an upper bulge to prevent the

clamp from turning over on the Bracket for more than 45º from the horizontal or to within less than 60 mm from the pole / fixing structure.

17.1.5.5 The Suspension Bracket should be so designed to ensure that the articulated link cannot slip out of it.

17.1.5.6 Suspension Brackets shall be designed to withstand a load applied at the anchoring point of the movable link as per Table: 9 below without deformation of more than 10 mm or breakdown at 33º below horizontal (there should be no longitudinal component of load parallel to the plane of fixing).

TABLE – 9

Conductor Size Normal rating

(Kg.) Load (N) sq. mm Dia

(mm) 25-35 8-11 1500Kg. 12500

17.1.6 Movable (Articulated) Link of SA: 17.1.6.1 Movable Links are used between the Suspension Bracket and Suspension

Clamp to allow a degree of movement and flexibility between the two. 17.1.6.2 Moveable Links should be made fully of insulating type of mechanical and

weather resistant thermoplastic. A metallic wear resistant ring should however be fitted at point of contact between the suspension bracket and the movable link.

17.1.6.3 The Movable link should be unloosably fitted to the Bracket and the Clamp.

17.1.7 Suspension Clamp of SA: 17.1.7.1 Suspension Clamps are used for locking the bare messenger of the ABC

bundle without damaging the insulation of ABC or allowing the bare



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messenger to become dismounted from the fitting. 17.1.7.2 The Suspension Clamp shall accommodate bare messenger wires from 25 to

95 sq. mtr. 17.1.7.3 The Suspension Clamp shall be made fully of insulating type of mechanically

strong and weather resistant plastic. 17.1.7.4 Bolts should not be used for clamping / locking the bare messenger in the

Clamp. 17.1.7.5 There shall be no losable parts in the Suspension clamp. 17.1.7.6 The Suspension Clamp should be unloosably fitted to the rest of the

Suspension Assembly.

17.1.8 Mechanical Test on Clamp of SA: 17.1.8.1 The Sub Assembly shall be subjected to a vertical load applied as per drawing

in accordance with Table-10. There shall be no breakdown or permanent deformation at load T initial for 1 minute or when the load is increased to T final and released.

TABLE – 10

Conductor Size Rating (Kg.) T start (I minute) (Newton)

T final (I minute) (Newton) sq. mm. Dia. (mm)

25-54 8-15 1500 Kg. 9600 12000 70-95 13-17 2000 Kg. 12800 16000

17.1.8.2 A sample messenger shall be fitted into a fixed suspension clamp and

subjected to a gradually applied longitudinal load of 300 N. There shall be no permanent slip page.

17.1.9 Voltage Test of SA:

A copper foil is wrapped at the clamping point around the maximum size of messenger allowed in that clamp. An ac voltage of 6 KV is applied between the copper foil and nearest conductive point of the clamp or into its absence to the point of fixation. The voltage should be withstood for 1 minute without breakdown or flashover.

17.1.10 Test Under Mechanical & Thermal Stress: 17.1.10.1 The test specimen is made up of approx. 10 mtr. of messenger wire strung

between two anchor clamps with a Suspension Clamp fixed in the middle. Masses of 40 Kg. are suspended at a distance of 1-2 mtr. On either side of the



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Suspension Clamp with a fixing mechanism of mass 2 + 1 Kg. 17.1.10.2 The specimen is subjected to 500 cycles of 90 minutes each. Each cycle

consists of the following:

17.1.10.2.1 For first 75 minutes, a constant longitudinal tension of 4000 N is applied to the messenger for rating of 1500 Kg. and of 4500 N rating of 2000 Kg. while 64 cycles right and left oscillation are produced on the clamp 32º on either side of the vertical.

17.1.10.2.2 During the first 45 minutes, an intermittent current of 4-5 A/sq.mm is applied to maintain the conductor temp at 60 + 3 ºC.

17.1.10.2.3 During the next 45 minutes of the cycle, the conductor is allowed to cool down naturally to the ambient.

17.1.10.2.4 At the 75th minute after having completed 64 oscillations, the oscillations are stopped and the longitudinal tension is increased to 7500 N for 1500 Kg. rating and 10000 N for 2000 Kg. Rating.

17.1.10.3 No messenger slippage should occur within the Suspension Clamp during the

500 cycles. 17.1.10.4 At the end of the 500 cycles, the messenger is immersed in water for 30

minutes. It is then tested to withstand 10 KV ac for 1 minute with a trip setting of 10 + 0.5 mA. There should be no breakdown or flashover.

17.1.11 ACCEPTANCE TESTS:

The following shall constitute acceptance tests for Suspension Assemblies:

17.1.11.1 Visual* 17.1.11.2 Dimensional (as per SCD and overall dimensions submitted with Tender

Offer)* 17.1.11.3 Mechanical Test on Bracket** 17.1.11.4 Mechanical Test on Clamp** 17.1.11.5 Voltage Test*

The above tests (for SA) are to be carried out as per sampling plan below. In case of random failure/defect, double the sample lot is to be drawn and there should be no failure/defect exceeding half the permissible defects (rounded down) shown in the chart.



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Lot Size For tests Marked* For tests Marked** Sample Size Max. permissible Defects Sample Size Max. permissible

Defects Up to 100 2 nil 1 nil 101 to 500 5 1 2 nil 501-2500 10 2 2 nil

2501 & above 10+0.2% 2 + 10% pf addl. Sample quantity

4 1

18. Insert to Cl. No.: 6 of IFB in QUALIFICATION OF BIDDERS:

Insert a new Cl. No.: 6.3 under Clause No.: 6 of IFB in QUALIFICATION OF BIDDERS, joint venture / consortium bidders to be considered as eligible (to bid) should meet the following qualifications.

18.1 Participation of contractors by forming a CONSORTIUM: 18.1.1 Two or more like minded contractors and or firms having above work

experiences which are under scope of supply and erection of the contractor as per this tender specification, may form a joint venture / consortium, may tie up and make agreement among themselves and apply against this tender specification, provided they qualify the criteria. However, the tie up partner showing their experience should have valid HT Electrical License issued by ELBO, Odisha. The sample formats of joint venture / consortium agreement and power of Attorney for joint ventures are enclosed as ANNEXURE: XV & XVI.

18.1.2 If the bidder is a joint venture / consortium, they shall comply the qualifying criteria as follows:

18.1.2.1 At least one partner shall have the stipulated previous work experience for

similar quantity of completed works as stated in the “QUALIFYING CRITERIA” with valid HT Electrical License issued by ELBO, Odisha.

18.1.2.2 However, the annual turnover of all consortium partners shall be added together to determine the qualifying criteria in case of joint venture / consortium bidder subject to the lead partner of the consortium shall have more than 50% of total required turnover.

18.1.2.3 One of the consortium partners shall be nominated as Lead partner and the lead partner shall be authorized to incur all the liabilities and receive instructions for and on behalf of all partners of the joint venture / consortium and entire execution of the contract including receipt of payments shall be done exclusively through the lead partner only. This authorization shall be



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evidenced by submitting a power of attorney signed by legally authorized signatories of all consortium partners. N.B.: Work order / LOA shall be issued in favour of the lead partner

only. 18.1.2.4 All partners of joint venture / consortium bidders shall be liable jointly and

severally for the execution of the contract in accordance with the contract terms and a copy of agreement entered in to by the joint venture/ consortium partners having such a provision shall be submitted along with the bid documents. A statement to this effect shall be included in the authorization mentioned as above as well as in the bid.

18.1.2.5 In addition to the above, joint venture / consortium bidder should submit the related documents in techno-commercial bid as mentioned in the qualifying criteria Cl. No.: 6 of IFB.

18.1.3 LITIGATION HISTORY: The Bidder should provide accurate information on any litigation or arbitration resulting on contracts completed or under execution by him over the last three (3) years. A consistent history of awards involving litigation against the Bidder or any Partner of the joint venture/Consortium may result in disqualification of Bid.



WESCO UTILITY





ANNEXURE – XV Format for Consortium Agreement

(On non-judicial stamp paper of Rs. 100/ - to be purchased in the name of executants companies or as required by the jurisdiction in which executed) This Consortium Agreement executed on this ……………………………. day of …………………………….………Two Thousand……………………….. M/s ……………………………………………………………… a Company/Firm incorporated under the companies Act – 1956/Firm Registration No. ………………………………………and having its registered office at ………………………….(hereinafter called the “Lead Member/First member” which expression shall include its successors); and M/s ………………………………….a Company/Firm incorporated under the companies Act – 1956/Firm Registration No. …………………………………….and having its registered office at …………………(hereinafter called the “Second Member” which expression shall include its successors)and M/s. …………………………….……..a Company/Firm incorporated under the companies Act – 1956/Firm Registration No. …………………………………………………..and having its registered office at ……………… (hereinafter called the “Fourth Member” which expression shall include its successors) The Lead Member/First Member, the Second Member, the Third Member and the Fourth Member shall collectively hereinafter be called as the “Consortium Members” for the purpose of submitting a bid proposal to WESCO Utility, Burla (Hereinafter referred to as DISCOM) , being a Utility having its office at Head Quarter Office, Burla - 768017, Sambalpur, India (hereinafter called the “Owner”) in response to the invitation of bids (hereinafter called as “Tender Notice No………” Document) Dated …………… for supply of Materials/Erection (hereinafter called as “the Contractor”). WHEREAS Clause-6.3 of the Invitation for Bids (IFB) in CORRIGENDUM-I, stipulates that Two or more likely contractors having been supply & erection of projects of tender item(s) as per this tender specification, provided they fulfill the following eligible criteria;

a) They should have legally valid consortium agreement as per the



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prescribed format for the purpose of participation in the bidding process. The total no of a consortium shall be limited to four members.

b) At least one partner shall have the stipulated previous work experience for similar quantity of completed works as stated in the “QUALIFYING CRITERIA” with valid HT Electrical License issued by ELBO, Odisha.

c) However, the annual turnover of all partners shall be added together to determine the qualifying criteria in case of joint venture / consortium bidder subject to the lead partner shall have more than 50% of total required turnover.

d) Consortium as a whole shall meet the qualifying norms specified in the tender, they participate.

e) One of the partners shall be nominated as Lead partner and the lead partner shall be authorized to incur all the liabilities and receive instructions for and on behalf of all partners of the joint venture / consortium and entire execution of the contract including receipt of payments shall be done exclusively through the lead partner only. This authorization shall be evidenced by submitting a power of attorney signed by legally authorized signatories of all partners.

N.B.: Work order / LOA shall be issued in favour of the lead partner only.

f) All partners of joint venture / consortium bidders shall be liable jointly and severally for the execution of the contract in accordance with the contract terms and a copy of agreement entered in to by the joint venture/ consortium partners having such a provision shall be submitted along with the bid documents. A statement to this effect shall be included in the authorization mentioned as above as well as in the bid.

g) In addition to the above, joint venture / consortium bidder should submit the related documents in techno-commercial bid as mentioned in the qualifying criteria Cl. No.: 6 of IFB.

h) Litigation History: The Bidder should provide accurate information on any litigation or arbitration resulting on contracts completed or under execution by him over the last three (3) years. A consistent history of awards involving litigation against the Bidder or any Partner of the joint venture/Consortium may result in disqualification of Bid.

i) The prescribed formats for Consortium Agreement (Annexure – XV) and Power of Attorney (Annexure – XVI) are provided in the tender specification as enclosures.

AND WHEREAS the members of the Consortium strictly comply the eligible criteria of the CLAUSE -6.3 of the Invitation for Bids (IFB) in the CORRIGENDUM-I as stipulated above, AND WHEREAS bid has been proposed to be submitted to the



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purchaser vide bid by Lead Member based on this CONSORTIUM agreement between all the members, signed by all the members. NOW THIS INDENTURE WITNESSETH AS UNDER: In consideration of the above premises, in the event of the selection of Consortium as successful bidder, all the Parties to this Consortium Agreement do hereby agree abide themselves as follows:

1. M/s ……………………….shall act as Lead Member for and on behalf of Consortium Members. The said Consortium members further declare and confirm that they shall jointly and severally be bound and shall be fully responsible to the Owner for the design, manufacture, supply, erection and successful performance of the materials /equipment, obligations under the supply contract under Agreement(s) submitted/executed by the Lead Member.

2. Despite any breach by the Lead Member or other member(s) of the

CONSORTIUM agreement, the Member(s) do hereby agree and undertake to ensure full and effectual an successful performance of the contract with Purchaser and to carry out all the obligations and responsibilities under the said Contract in accordance with the requirements of the Contract.

3. If the Owner suffers any loss or damage on account of any breach of the Contract or any shortfall in the performance in meeting the performance guaranteed as per the specification in terms of the Contract, the Member(s) of these presents undertake to promptly make such loss or damage caused to the purchaser, on its demand without any demur. It shall not be necessary or obligatory for the purchaser to proceed against Lead member to these presents before proceeding against or dealing with the other members. The obligation of each of the member is absolute and not independent of the consortium or any member.

4. The financial liability of the members of this CONSORTIUM agreement to the Owner, with respect to any of the claims arising out of the performance or non- performance of the obligations set forth in the said CONSORTIUM agreement, read in conjunction with relevant conditions of the contract shall, however, not be limited in anyway so as to restrict or limit the liabilities of any of the members of the CONSORTIUM agreement. The liability of each member is absolute and not severable.



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5. It is expressly understood and agreed between the members to this CONSORTIUM agreement that the responsibilities inter se amongst the members shall not in any way be a limitation of joint and several responsibilities and liabilities of the Members to the Owner. It is clearly understood that the lead member shall ensure performance under the agreement(s) and if one or more Consortium members fail to perform its/their respective obligations under the agreements, the same shall be deemed to be a default by all the Consortium Members. It will be open for the purchaser to take any steps, punitive and corrective action including the termination of contract in case of such default also.

6. This CONSORTIUM agreement shall be construed and interpreted in accordance with the laws of India and shall be subjected to exclusive jurisdiction within Burla/Sambalpur in all matters arising there under.

7. In case of an award of a Contract, all the members to the CONSORTIUM agreement do hereby agree that they shall be jointly and severally responsible for furnishing a contract performance security from a bank in favour of the Owner in the forms acceptable to Owner for value of 10% of the Contract price. It is also hereby agreed that the lead member shall, on behalf of the CONSORTIUM submit the contract performance security in the form of an unconditional irrecoverable Bank guarantee in the prescribed format and as per terms of the contract.

8. It is further agreed that the CONSORTIUM agreement shall be irrevocable and shall form an integral part of the Contract, and shall continue to be enforceable till the Owner discharges the same. It shall be effective from the date first mentioned above for all purposes and intents.

9. Capitalized terms used but not defined herein shall have the meaning as assigned to them to the Tender Documents and/or the agreements.

10. In case of any dispute amongst the members of the Consortium, Owner shall not be in any way liable and also the consortium members shall not be absolved from the contractual obligation in any manner.

IN WITNESS WHEREOF the Members to the CONSORTIUM agreement have through their authorized representatives executed these presents and affixed Common Seals of their companies, on the day, month and year first mentioned above.

1. Common Seal of <…………………..> For Lead/First Member Has been affixed in my/our presence Pursuant to the Board of Director’s



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resolution dated……………… (Signature of authorized representative) Name …………………Signature………………………….. Designation …………………….

Name…………………………… Common Seal of the company Designation …………………………..……………………………………

2. Common Seal of <…………………..> For Second Member

Has been affixed in my/our presence Pursuant to the Board of Director’s resolution dated……………… (Signature of authorized Representative)

Name ………………… Signature………………………….. Designation …………………….

Name…………………………… Common Seal of the company Designation…………………………..

3. Common Seal of <…………………..> For Third Member

Has been affixed in my/our presence Pursuant to the Board of Director’s resolution dated……………… (Signature of authorized representative) Name…………………………… Common Seal of the company Designation…………………………..

4. Common Seal of <…………………..> For Third Member

Has been affixed in my/our presence Pursuant to the Board of Director’s resolution dated……………… (Signature of authorized representative) Name…………………………… Common Seal of the company Designation…………………………..

WITNESSES 1………………………………… 2. ……………………………………

(Signature) (Signature)

Name ………………………….. Name …………………………. (Official address) (Official address)



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ANNEXURE – XVI FORM OF POWER OF ATTORNEY FOR CONSORTIUM

(On Non-Judicial Stamp Paper of Rs. 100/ - to be purchased in the Name of CONSORTIUM) KNOW ALL MEN BY THESE PRESENTS THAT WE, the Members whose details are given hereunder……………………have formed a CONSORTIUM and having our Registered Office (s)/Head Office (s) at …………………………………… (hereinafter called the ‘Consortium’ which expression shall unless repugnant to the context or meaning thereof, include its successors, administrators and assigns) do hereby constitute, nominate and appoint M/s ………………………………. A company incorporated under the laws of ……………… and having its Registered/Head office at ……………….as our duly constituted lawful Attorney (hereinafter called “Lead Member”) to exercise all or any of the powers for supply ……………………………………. for which bids have been invited by the Owner namely WESCO Utility to undertake the following acts:

(i) To submit proposal, participate and negotiate in respect of the aforesaid Bid – Specification of the Owner on behalf of the “Consortium”

(ii) To negotiate with Owner the terms and conditions for award of the contract pursuant to the aforesaid Bid and to sign the contract with the Owner for and on behalf of the “Consortium”

(iii) To do any other act or submit any document related to the above. (iv) To receive, accept and execute the contract for and on behalf of the

“”Consortium”. (v) To submit the contract performance security in the form of an unconditional

irrecoverable Bank guarantee in the prescribed format and as per terms of the contract.

It is clearly understood that the Lead Member shall ensure performance of the contracts(s) and if one or more Member fail to perform their respective portion of the contracts (s), the same shall be deemed to be a default by all the members. It is expressly understood that this power of Attorney shall remain valid binding and irrevocable till completion of the defect or liability period in terms of the contract. The CONSORTIUM hereby agrees and undertakes to ratify and confirm all the whatsoever the said Lead Member quotes in the bid, negotiates and signs the contract with the Owner and / or proposes to act on behalf of the CONSORTIUM by virtue of this Power of Attorney and the same shall bind the CONSORTIUM as if done by itself.



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IN WITNESS THEREOF the members Constituting the CONSORTIUM as aforesaid have executed these presents on this …………..day of ………..under the Common Seal (s) of their Companies.

For and on behalf of the Members of CONSORTIUM

1. ----------------------------------------- 2. -----------------------------------------

3. ----------------------------------------- 4. -------------------------------------------

The Common Seal of the above Members of the CONSORTIUM: The Common Seal has been affixed there unto in the presence of:

WITNESS

1. Signature…………………………..

Name……………………………. Designation…………………………… Occupation……………………………

2. Signature………………………….. Name……………………………. Designation…………………………… Occupation……………………………



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19. Modification to Cl. No.: 18.2 & 18.3 of Section-III of Technical Specification: As per Existing Tender Norms As per Modified Tender Norms

Any new design (approved and tested in any approved test bed) as per the required parameters is also acceptable. No more MS poles without Galvanization will be used

Any new design (approved and tested in any approved test bed) as per the required parameters is also acceptable. Only non-galvanized RS Joist Poles will be used.

For easy transportation two pieces of R.S. Joist poles with single splice joint using galvanized sections of channels / angles / plates of adequate size along with required size GI bolt, nuts & spring washers is to be adopted.

For easy transportation two pieces of non-galvanized R.S. Joist poles with single splice joint using non-galvanized sections of channels / angles / plates of adequate size along with required size GI bolt, nuts & spring washers is to be adopted.

20. Modification to Cl. No.: 13.0 of ANNEXURE: I (BID PROPOSAL LETTER)

of SECTION: IV: As per Existing Tender Norms As per Modified Tender Norms

We further agree that if our Bid is accepted we shall provide an irrevocable Bank guarantee towards Contract Performance Guarantee, of value equivalent to ten percent (10%) of the Contract Price initially valid up to the end of ninety (90) days after the end of the contract warranty period in the form of Bank Guarantee in your favour within 15 (fifteen) days from the date of ‘Notice of Award of Contract’ and enter into a formal agreement with you immediately thereafter.

We further agree that if our Bid is accepted we shall provide an irrevocable Bank guarantee towards Contract Performance Guarantee, of value equivalent to ten percent (10%) of the Contract Price initially (5% instead of 10% of total contract value for local MSEs & consortium of MSEs Units) valid up to the end of ninety (90) days after the end of the contract warranty period in the form of Bank Guarantee in your favour within 15 (fifteen) days from the date of ‘Notice of Award of Contract’ and enter into a formal agreement with you immediately thereafter.

All other terms & conditions of the above mentioned tender remains unaltered. For detailed Tender Specifications, subsequent corrigendum, addendum, updates to the Tender Specifications, please visit our website: www.wescoodisha.com regularly.

Sd/ - General Manager (Works & Planning)

