ASSAM POWER DISTRIBUTION COMPANY LTD. (CAR) OFFICE OF … · assam power distribution company ltd. (car) office of the chief executive officer, tezpur electrical circle, tezpur bidding

ASSAM POWER DISTRIBUTION COMPANY LTD.

(CAR)

OFFICE OF THE CHIEF EXECUTIVE OFFICER, TEZPUR ELECTRICAL CIRCLE,

TEZPUR

BIDDING DOCUMENT

FOR

CONSTRUCTION OF 11 KV DEDICATED FEEDER TO

JUDICIAL COMPLEX (TEZPUR)

&

CONSTRUCTION OF 11 KV LINE & 11/0.4KV S/S

INCLUDING AGUMENTATION OF 33/11 KV SUB-STATION

ACCESSORIES (B.CHARIALI)

ON

“TURNKEY” BASIS

SCHEME:

NIT REFERENCE: Short Tender Notice No

CEO/TEC/APDCL/CAR/2013/PS(J)/T&B/112Dtd. 14/11/2013

INDEX

Section – 1 Notice Inviting Tender Page- 1-2

Tender Inviting Proposal Page- 3-8

Tender Proforma – Part –I (Techno Commercial Bid) Page- 9-10

Tender Proforma-Part-II (Price Bid)

BOQ of Diff Packages Page- 11-14

Basic Requirements Page- 15-18

Section – 2 Technical Specifications Page- 19-69

Section – 3 Guaranteed Technical Particulars Page- 70-84

SECTION -1

CEO/TEC/APDCL/CAR/2011/PS(J)/T&B/111Dtd. 04-10-2013 Page 1

Tender Inviting Proposal TEC/ APDCL(CAR)

ASSAM POWER DISTRIBUTION CO. LTD (CAR)

OFFICE OF THE CHIEF EXECUTIVE OFFICER,

TEZPUR ELECTRICAL CIRCLE,

NOTICE INVITING TENDER NIT No. CEO/TEC/APDCL/CAR/2013/PS(J)/T&B/112 Dtd. 14-11-2013

Sealed two parts Re-Tenders are invited from experienced & financially sound EMPANELLED

Electrical Contractor(s) (individual or joint venture)/Firm(s) of APDCL, having valid electrical license issued by

the competent authority of the Govt. of Assam for below mentioned works under Tezpur Electrical Circle,

APDCL,Tezpur.

Name of the work: As per table below.

Source of fund: Annual Plan 2013-14

Eligibility Criteria: Average annual turnover of the bidder for last three consecutive financial years against the

package should be as per the requirements shown in the table.

Cost of Tender Paper for the Package: Rs.3000/-(Rupees Three Thousand) only for Package 1 & Rs.3000/-

(Rupees Three Thousand) Only for Package 2, in the form of ‘A/C Payee Demand Draft/Banker’s Cheque

(non-refundable) duly pledged in favour of “A.M (A/C) O/O THE CHIEF EXECUTIVE OFFICER,

TEZPUR ELECTRICAL CIRCLE,APDCL, CAR, TEZPUR”. Tender paper can be purchased on all

working days w.e.f. 14/11/13 to 21/11/13 from the office of THE CHIEF EXECUTIVE OFFICER,

TEZPUR ELECTRICAL CIRCLE, APDCL, CAR, TEZPUR.

Date of submission of Tenders: Up to 13-00 Hrs. of 30/11/13

Date of opening of Bid: Techno commercial bids will be opened at 13-30 Hrs. of 5/12/13 at the O/O the

CEO, TEC,APDCL, CAR, Tezpur and the price bid will be opened at the o/o the CGM(D), APDCL,

CAR, Bijulee Bhawan, Paltan Bazar, Guwahati-01, on a date to be notified later on.

Package Description of work Completion

period

Earnest

Money

(in Rs.)

Turn over

requirement

(in Lacs)

PS(J)/T/01 CONSTRUCTION OF 11 KV DEDICATED FEEDER

TO JUDICIAL COMPLEX (TEZPUR)

Within

31st March

2014

100000.00 50.00

PS(J)/B/02

CONSTRUCTION OF 11 KV LINE & 11/0.4KV S/S

INCLUDING AGUMENTATION OF 33/11 KV SUB-

STATION ACCESSORIES (B.CHARIALI)

Within

31st March

2014

100000.00 50.00

Earnest money: As shown in the table below. However, in case of SC/ST/OBC bidders, the amount will be

50% of the shown value subject to the condition of submission of cast certificate.

N.B: 11/0.4KV DTR’s, Breakers and Control & Relay Panels will be procured centrally from CGM(D),

APDCL, CAR, Bijulee Bhawan, Paltan Bazar, Guwahati-01. Erection of the same will be executed by the

contractor.

Memo No. CEO/TEC/APDCL/CAR/2013/PS(J)/T&B/112/ Dated 14/11/2013

Copy to :-

1. The P.S to CMD, APDCL, Bijulee Bhawan Paltan Bazar Ghy-1 for favour of information.

2. The Chief General Manager (HQ) APDCL, Bijulee Bhawan Paltan Bazar Ghy-1 for favour of information.

3. The Chief General Manager (D) APDCL, CAR Bijulee Bhawan Paltan Bazar Ghy-1 for favour of information.

4. The Chief General Manager (PP&D) APDCL, Bijulee Bhawan Paltan Bazar Ghy-1 for favour of information.

5. The General Manager, NAZ, APDCL, CAR, Tezpur for favour of information.

6. The AGM (Law), APDCL, Bijulee Bhawan, for information

7. The All AGM’S Under Tezpur Electrical Circle, for information.

Chief Executive Officer

Tezpur Electrical Circle,

APDCL, CAR, TEZPUR



Note:

1. The work should be carried out as per latest APDCL/REC specification and construction

standard.

2. The tenderers may submit tender(s) against one package or multiple packages.

3. Bids must be submitted in two parts as Techno Commercial and Price bid in two

separate envelope super scribing (a) Tender No. (b) Name of the bidder with full address (c)

Name of the package against which the bid is offered.

4. The bid against each package should be submitted separately in one envelope.

5. Earnest money as stipulated should be submitted with the Techno Commercial bid in

the form of Bank guarantee from any Nationalized or scheduled Bank of India

/NSC/KVP/Term Deposit/FD pledged in favour of “THE CHIEF EXECUTIVE OFFICER,

TEZPUR ELECTRICAL CIRCLE, APDCL, CAR, TEZPUR”. Any tender without

earnest money will be rejected outright.

6. Part-I of the Bid shall consists of information as required and all Technical Bidding

Schedules (GTP), all Price Bidding Schedules with all quantities filled up but without

any Price, etc and Part-II shall consists of Price Bidding Schedules with all quantities

and prices filled up. Details are available in General Instruction to Bidder in Section-2,

Volume-1 of the Bid Document

7. Quoted rate should be inclusive of all taxes and duties and firm. Taxes should be shown

separately

8. Quote rate must valid for minimum 180 days.

9. The tender should be addressed and submitted in the office of THE CHIEF EXECUTIVE

OFFICER, TEZPUR ELECTRICAL CIRCLE, APDCL, CAR, and TEZPUR and will be

opened on the scheduled date & time in presence of the intending tenderers.

10. Only those bidders whose Part-I Bid ie. Techno Commercial bid (Qualification) is found

acceptable shall be considered for opening of Price Bid. The date and time of opening of Part-

II Bid (Price) shall be communicated to those bidders whose bids are qualified for opening.

11. The Company reserves the right to accept or reject any tender in part or in full or spilt the

work of any package without showing any reason thereof.

12. The bidding documents are not transferable and cost of bidding document is not refundable

under any circumstances.

13. The bidders who already participated in the NIT No.

CEO/TEC/APDCL/CAR/2013/PS(J)/T&B/111 Dtd. 04-10-13 need not apply.

Chief Executive Officer

Tezpur Electrical Circle,

APDCL, CAR, TEZPUR



ASSAM POWER DISTRIBUTION COMPANY LTD. (CAR)

OFFICE OF THE CHIEF EXECUTIVE OFFICER,

TEZPUR ELECTRICAL CIRCLE,

TENDER INVITING PROPOSALS WITH TERMS & CONDITIONS

FOR CONSTRUCTION OF 11 KV LINE & 11/0.4 KV Sub- Station including Augmentation of

33/11 KV Sub- Stations, ON TURNKEY BASIS 1. Intent of the Tender Enquiry

The intent of the Tender Enquiry is to invite proposals from the prospective and relevantly

experienced and financially sound contractor(s) (individual or joint venture)/firms to carry out the

work of CONSTRUCTION OF 11 KV LINE & 11/0.4 KV Sub- Station including Augmentation of

33/11 KV Sub- Stations as per the scope of work described in the following.

2. Scope of Work

The various activities under the scope of work shall among other related aspects cover the following.

i. Procurement and supply of all materials required for the work.

ii. Site unloading, storage and handling of all materials supplied including watch and ward for

safe custody.

iii. Site fabrication work as per requirement.

iv. Submission of implementation schedule from the date of award of contract for: -

Route survey for laying new lines/ R & M/Construction of 11 KV Line & 11/0.4KV

S/S/Augmentation of 33/11 KV S/S

Erection, testing and commissioning of all materials/equipment supplied/system installed.

v. Project management and site organization.

vi. Obtaining clearance from statutory Agencies, Government Departments, Village Panchayats

etc.

vii. Submission of specification/Test Certificate/Drawings etc. of all materials supplied.

viii. A list of various items normally involved in proposed type of work is provided in this

document. This, however, is not to be considered as limiting but only typical. Vendors’ scope

will include all other items and materials as may be required to effectively complete the work.

ix. Return of dismantled materials of dismantled lines to the concerned divisional store.

x. Required Jungle cutting.

Above all, the scope of work of the vendor/contractor will include all items and facilities as may be

necessary to complete the electrification work on turnkey basis and as binding requirement.

3. Basic specification of the various equipment/ works to be supplied carried out.

i. All equipment supplied shall conform to the requirement of relevant ISS (BIS) as approved

by Company and that of REC specification and construction standards.

ii. For ready reference, the basic specification of major items, namely- Transformer, conductor,

GI angle for cross bracing, Disc insulator 33KV/11KV, disc attachment for

raccoon/rabbit/weasel conductor, 11 KV pin insulator & G.I. pin, Polymer Insulators (Disc &

Pin), GI/MS channel, HT stay set, guy insulator, stay wire, CI earth pipe, GI wire 6/8 SWG,

nuts & bolts, washer, steel tubular pole, PSC pole, H/W fittings, Suspension/tension clamps,



danger plate, pole clamps, boulder for PSC pole grouting, PCC for steel tubular pole

grouting, XLPE power cable, are provided in the Technical Specification Section. Based on

this, the vendor shall draw total specification for procurement after approval of Company.

iii. All materials supplied shall be erected, protected as per approved standard practice for

proposed type of electrical work so as to supply electricity to the consumers most effectively

and in an intrinsically safe manner.

iv. All equipment supplied and installed shall provide easy and effective:

Maintainability

Reliability

Availability

Long life

All equipment supplied and installed shall be provided stable and adequate weather

protection, system earthing etc.

v. All items, which may require frequent opening up/ dismantling for maintenance, shall be

adequately sealed against any tampering/ theft etc.

vi. All supporting structures shall be of steel as per IS 2602 appropriate grad.

vii. Generally supply and erection of materials and system shall meet the requirement laid down

by REC for rural electrification works.

4. Submission of bid

The bid shall be submitted in a sealed envelope as follows:

i. Techno-commercial bid

Under this will be included and defined vendors scope of work, responsibilities, guarantees,

specification of equipment, commercial terms and conditions, vendor’s company credentials,

experience of similar assignments, registration details, etc. as per requirement. Tender proforma

for techno-commercial Bid is enclosed as Annexure-I.

ii. Price Bid

Under this will include rates of supply and erection of different items for electrification. The

tender proforma for price Bid is enclosed as Annexure-II.

5. Estimation of material requirement:

The total quantity of materials required in each package is indicated in the Package wise BOQ in

Section 1

6. Award of work:

i) The evaluation of bids will be carried out, first of techno-commercial bid and thereafter opening

the price bid of only those who qualify and meet the technical requirement.

ii) Company reserves the right not to order/ award the job to the price-wise lowest party if the

party during evaluation is found technically non responsive.

iii) Work should be started within fifteen (15) days from the date of issue of the work order, failing

which order will be cancelled without further correspondence.

iv) The line/Sub-station after completion should be under custody of the contractor till the date of

commissioning and charging. The properties will be taken over by APDCL after satisfactory

commissioning and charging.

7. Period of completion:

Within 31St

March 2014.


APDCL

8. Implementation schedule:

CONSTRUCTION OF 11 KV DEDICATED FEEDER TO JUDICIAL COMPLEX (TEZPUR)

&

CONSTRUCTION OF 11 KV LINE & 11/0.4KV S/S INCLUDING AGUMENTATION OF 33/11 KV SUB-STATION

ACCESSORIES (B.CHARIALI) (TURNKEY)

S.

N

. Description

APPROVAL PERIOD EXECUTION PERIOD

5 days 3 days. 15 days 5 days

7 d

ays

25

day

s

25

day

s

15

day

s

15

day

s

15

day

s

15

day

s

1. Preparation & submission

of bid document

2. Approval of Bid Document

3. Floating of Bid and Bidding

period

4. Opening of Bid, evaluation

& approval

5. Issue of Award, agreement

6. Manufacture & supply of

materials

7. Erection of equipments

8. Testing & commissioning

9 Cash Flow in percentage of

total sanctioned amount 2% 98%

CEO/TEC/APDCL/CAR/2011/PS(J)/T&B/111Dtd. 04-10-2013 Page No 6

Notice Inviting Tender APDCL

9. Termination of work order:

Company reserves the right to terminate the work order at any stage in accordance with the Company’s

General Condition of Supply and Erection.

10.1 Terms of Payment:

Payment will be made from the O/O the CGM (PP&D), APDCL, Bijule Bhawan, Paltan bazar,

Guwahati-01, Bills subject to testing and commissioning & fulfillment of clause-14(d).

10.2 Earnest Money Deposit (EMD):

The Tender must be accompanied with earnest money as mentioned in the NIT against each package

to be deposited in the form of Bank guaranty from any nationalized /Schedule bank of

India/NSC/KVP/Term Deposit/FD pledged in favour of “THE CHIEF EXECUTIVE OFFICER,

TEZPUR ELECTRICAL CIRCLE, APDCL, CAR, TEZPUR”. The earnest money to the unsuccessful

bidders will be released on finalization of the tenders. The EMD to the successful bidder will be

released on submission of Security Deposit at the time of execution of the agreement.

10.3 Security deposit and agreement:

The successful bidders shall have to deposit security money in the form of Bank Guarantee issued by

any Nationalized Bank/Scheduled Bank in Company’s standard proforma on non-judicial stamp of

appropriate value for an amount equal to 2.5% of the contract value at the time of execution of

agreement. The security deposit is liable to be forfeited in case of non-execution of contract/ work

order. The security deposit will be released on successful commissioning and testing of the materials

ordered and after depositing performance B/G as per clause 14(d).

11. Basic qualifying requirement:

The prospective bidder must fulfill the following pre-bid qualifying requirement

a. The bidder must have valid electrical Contractor’s and Supervisor’s License (HT) issued by the

Licensing Authority of Govt. Of Assam. .

b. The bidder must have adequate experience of doing similar job on turnkey basis.

c. Average annual turnover of the bidder for last three consecutive financial years should be at least

as per the requirement shown in the table against particular package or packages and the annual

turnover should be certified by a registered Chartered Accountant with balance sheet.

d. The tenderer shall furnish latest Income Tax clearance certificate and sales tax registration and

valid Labour License and WCT registration Certificate.

12. Other requirements:

The Tenderer

i) Should be acquainted himself or his associate with relevant conditions of the local geography

and socio economic setup of the different location of the State and being capable accordingly

to mobilize, organize and expedite the activities.

ii) Should have adequate working personnel comprising of Electrical/ Mechanical engineers,

electrical supervisor, skilled and unskilled labour to be deputed to the proposed assignment.

iii) Should be conversant with the code/ standards applicable to proposed type of work. ISS, REC

guidelines.

13. Project Management and site Organizations:

In Consideration of the tight schedule of the project, the successful bidder(s) /Contractor(s) shall

exercise systematic closely controlled project management system with the aid of commonly used

soft tools. Following are the major activities/deliverables to be organized /generated for submission

to the Board.

(I) Liaison/Construction offices will be established in each Circle of APDCL.



(II) Work Progress Report:

Progress monitoring by the contractor as per implementation schedule and approved

milestones.

Fortnightly progress report will be submitted to the concern Deputy General Manager,

Senior Manager & Sub-Divisional Engineers.

The progress report will highlight the points like, work completion vis-à-vis planned, plan

for next working period, delay analysis vis-à-vis committed schedule with reasons and

remedies etc.

(III) Site Organization.

The vendor at each working site shall establish the following.

Store house

Site fabrication facilities

Construction supervision office

All offices shall be adequately furnished and staffed so as to take all site decisions independently

without frequent references to head Work’s/offices.

14. Guarantees and Penalties

a) Liquidated Damages (LD)

The proposed work is on top priority of Government of Assam and therefore has to be completed

within stipulated/agreed schedule. Any delay beyond that will attract penalty as per Company’s

general condition of supply and erection.

b) Equipment and system installed shall be guaranteed individually for integrated operations for a

period of 18 (Eighteen) months from date of commissioning of a system. In case of detection of any

defect in individual equipment or system as a whole, the same shall be replaced by the vendor free of

cost within 15 days of intimation by the Company’s representative.

c) Warranty from the manufacturer shall be produced along with manufacturer’s test certificate for the

following items

All Types of Insulators with Hardware fittings.

Stay set

All other equipment usually covered under Manufacturer’s warranty.

d) A performance Bank Guarantee from a Nationalized Bank/Scheduled Bank in Board’s standard

proforma on Non judicial stamp paper of appropriate value with a validity of 18 (eighteen) months

@ 10% of total value of work executed shall have to be furnished by the Contractor before final

payment.

15. Approvals/Clearances:

1. APDCL’s Engineer shall approve all drawings and documents prepared by the contractor for

construction of the Lines & Sub-Station.

2. The contractor shall obtain all statutory approvals and clearances from the statutory authorities

before charging the system.

16. Environmental Considerations:



While carrying out the assignment, no damage to environment /forests will be caused by the

contractor. If so done, the contractor will have to compensate the same to the satisfaction of the

concerned Authority.

17. Submission of documents.

a) With bids.

i) Detail list of makes and materials offered with catalogues, technical specification etc.

ii) Certificates and testimonials in support of credentials of the bidder’s organization.

iii) Details past experience.

iv) Brief write-up on methodology to carry out the assignment, if awarded.

v) Details of manpower to be engaged for the assignments.

vi) Any other information, the vendor may feel facilitative in evaluating the bid.

vii) Copies of contractor and supervisor’s license, income Tax clearance certificate, turnover, etc.

viii) Photo copy of the PAN card.

ix) Empanelment Certificate of Tezpur Electrical Circle.

x) Copy of Labour License.

xi) Copy of Provident Fund Certificate.

b) During project execution

i) All documents for approval shall be submitted in 2 copies.

ii) All final documents to be submitted to statutory organizations will be furnished as per requirement of

the authority.

18. Funding of the project.

The proposed work is to be done under

19. Disclaimer:

While the Company will make every endeavor to extend necessary facilitation in expediting the

work, the contractor shall be responsible to organize and arrange all necessary inputs right from

mobilization activities up to completion of the project. Company will not entertain any failure / delay

on such accounts. Also, Company will not be responsible for any compensation, replenishment,

damage, theft etc. as may be caused due to negligent working, insufficient coordination with

Government / non Government / Local Authority by the contractor and/ or his personnel deputed for

work. The contractor shall take necessary coverage under LIC/GIC etc. for his working personnel

and the goods in store as well as in transit. The contractor will be deemed to have made him

acquainted with the local working conditions at site(s) and fully provide for into the bid submitted.

20. Terms and conditions, which are not specified, herein above will be governed by the Company’s

General Terms and Conditions of supply and erection.



Annexure - I

Tender Proforma part – I (Techno-commercial Bid)

NIT No. CEO/TEC/APDCL/CAR/2011/PS(J)/T&B/……………….. Due date of Tender: 19.10.13

1. Name and full address of the :

Tenderer.

2. Particulars of payment made for :

purpose of tender documents money

receipt No: and Date.

3. Amount of earnest money paid with :

Money receipt No and date/ Bank Call

Deposit No: and Date.

4. Whether Sales Tax and Income Tax : Yes / No

clearance certificate submitted

5. Sales Tax Registration No: :

6. WCT registration certificate with validity :

7. Acceptance of guarantee clause of :

Materials /equipment and system

Installed individually and for integrated

Operation.

8. Acceptance of penalty clause :

9. Acceptance of terms of payment :

10. Certificate/ documents regarding works :

Done with value with last three years if any

11. Certificate/ documents regarding adequate :

Experience of doing similar job of rural

Electrification or similar electrification work

12. Acceptance for carrying out electrification :

Work of at least one (one) similar work

13. Details of manpower and T&Ps including :

Vehicles available with the firm to be

Enclosed separately.

14. List of documents enclosed :

.

Signature with full name

and designation of the Bidder

(Authorized person)



Annexure- I(B)

Sl No. Qualification Requirement

Furnished

at

Annexure

Page Remark

A LEGAL

1 Document in support of legal status of firm

2 Memorandum of Association &Registered/Notarized Joint venture Agreement if JV

3 Registered/Notarized power of attorney of the signatory of the Bidder to

participate in the Bid.

4 Board resolution of the company to authorizing the signatory

5 Information regarding any litigation, current or during the last five years, in

which the Bidder is involved, the parties concerned, and disputed amount

6 Valid Electrical Contractor's License

7 Valid Electrical & Supervisory License

8 VAT/CST/WCT/Service Tax/Labour registration certificate

9 Provident Fund Registration Certificate

B Financial

1 Audited Balance sheet, Profit & Loss account, Auditor’s report for last

three year

2 CA Certified Turnover of bidder during the last 3(three) years.

3 Evidence of adequacy of working capital for this contract (access to line (s) of credit and availability of other financial resources)

4 Authority to seek references from the Bidder's Bankers

5 Income Tax return for last 3(three) years

6 Value of similar work performed by the bidder in each of the last five years – Statement

7 Proposals for subcontracting components of the Works amounting to more

than 10 percent of the Contract Price

8 Details of the EMD (BG/KVP/TD/Bank Call Deposit)

C Technical ability and experience

1 Experience in works of a similar nature and volume for each of the last 5(five) years and details of works under way or contractually committed

including full address of client for communication- Statement

2

Certificates issued by an Engineer not below the Cadre of Deputy General

Manager/SE along with supporting photo-copies of agreements for the works executed in any one year (12 months)

3

Detailed activity plan and methodology supported with layout and necessary

drawings and calculations (detailed) to allow the employer to review their

proposals.

4 Quality Assurance plan with Bar Chart

5 List of technical personnel and their qualification and experience with

organization chart

6 Proof of availability of the tools, tackles, spare parts, etc. for carrying out

the works.

D Technical particulars of equipments and Materials offered in the Bill of

Material and their GTPs

Annexure - II



Tender Proforma part-II (Price Bid)

NIT No. CEO/TEC/APDCL/CAR/2011/PS(J)/T&B/…111…………….. Submission date of Tender: 19.10.13

Package for which tendered: PS(J)/T/01 :-Construction of 11 KV Dedicated Feeder to Judicial complex

(Tezpur)

Name and full address of the Tenderer:

Sl.

No

Items QTY Unit Unit

Rate ( Rs.)

Max

Amount

Payable (Rs.)

1. Supply, Erection of MS Tubular pole SP-66 ,12 Mtr l length perpendicular

to the ground including excavation of earth pit with depth of 1/5th

of the

length of the pole including grouting of pole above two feet ground level

63 Nos.

2. Supply, fitting and fixing of 11 KV Channel Cross Arm (

75X40x6X2200mm) MS

160 Nos.

3. Supply, fitting and fixing of HT Stay Set including grouting 20 Sets

4. Supply, fitting and fixing of HT Guy Insulator 20 Nos.

5. Supply, fitting and fixing of HT Stay Wire 140 Kg

6. Supply, fitting and fixing of 11KV Disc Insulator,45 KN 258 Nos.

7. Supply, fitting and fixing of Hardware Fittings for Disc Insulator 129 Sets

8. Supply, fitting and fixing of 11 KV Pin Insulator with GI pin 162 Nos.

9. Supply ,fitting & fixing of AAA Raccoon Conductor 8.5 Km

10. Supply ,fitting & fixing of the Pole Clamp 210 Nos.

11. ,Erection ,testing ,charging & Commissioning of 11/0.4, 1x100KVA

Transformer

1 No.

12. Supply, fitting and fixing of Gang Operated Switch,400 A 2 Sets

13. Supply ,fitting & fixing of DO Fuse Set,150 Amps 2 Set

14. Supply, fitting & fixing of C I. Earth Pipe by digging of earth pit using

standard earth pipe and finely broken charcoal surrounding the pipe and

connecting Wires.

24 Nos.

15. Supply , fitting & fixing of GI Wire,8 SWG including guarding and

earthing

1000 Kg

16. Supply fitting & fixing of Aluminum lug (Assorted) 60 Nos

17. Supply, fitting & fixing of the Danger Plates 63 Nos.

18. Supply, fitting & fixing of the PVC Cable,1-core Cable 95 Sqmm 40 Mtr.

19. Supply, fitting and fixing of 11KV LA, 9 KA line type including connection

of earthing wire to the earthing electrode with nuts –bolts, washer etc.

2 Set

20. Supply, fitting & fixing of the Security Fencing 15 Sq.Mtr

21. Supply , fitting & fixing of MS Nuts & Bolts with washer 183 Kg

22. Supply , fitting & fixing of LT angle cross Arm 150 No

23 Supply, fitting and fixing of MS angle(50X50x6X5000mm) 30 Nos

24 Supply, fitting and fixing of Shackle Insulator With fittings 300 Set

25 Fitting and fixing of 11 KV CT-PT Set 1 Set

26 Supply, fitting and fixing of indoor Cable Kit (185 Sqmm) 1 No

27 Supply, fitting and fixing of outdoor cable kit(185Sqmm) 1 No

28 Supply, fitting and fixing of 11KV3-core XLPE Cable 185 Sqmm 96 Mtr

N.B: 1) Rate including supply, erection, testing and commissioning but in case of SL. No.-11 &

26 only, erection, testing and commissioning rate to be quoted.


and designation of the Bidder (Authorized person)



Annexure-I (A)

BOQ for Package No- PS(J)/T/01

For CONSTRUCTION OF 11 KV DEDICATED FEEDER TO JUDICIAL COMPLEX (TEZPUR)

1

Steel Tubular Pole SP-66 12 Mtr Length coated with two coats

of primer and aluminium paint No. 63

2 MS Angle 50x50x6x5000mm No. 30

3 MS- Channel X Arm (75x40x6x2200 mm) No. 160

4 11KV GOAB 400A Set. 2

5 11 D.O Fuse Set 2

6 11 KV L.A 9 KA Line Type Set 2

7 11 KV Disc Insulator Porcelain 45 KN No. 258

8 Hardware Fitting for Disc No. 129

9 11 KV Pin Insulator With GI Pin Set 162

10 11/0.43 KV 100 KVA Transformer (ONLY INSTALATION) No. 1

11 AAAC Raccoon Conductor KM 8.5

12 CI Earth Pipe No. 24

13 GI Wire 8 SWG Kg 1000

14 LT Cross Arm No. 150

15 Pole Clamp LT No. 210

16 Security Fencing Mtr 15

17 Shackle Insulator with fittings No. 300

18 M/S Nuts & Bolts & Washer Kg. 183

19 11 KV Danger Plate No. 63

20 Outdoor Cable Kit 185 Sqmm 3 Core Set 1

21 Indoor Cable Kit 185 Sqmm 3 Core Set 1

22 11 KVXLPE Cable 3 Core 185 Sqmm 11 KV Mtr. 96

23 PVC S/C Cable 95 Sqmm Mtr 40

24 HT Stay Set Set 20

25 HT Guy Insulator No. 20

26 Stay Wire7/10 SWG Kg 140

27 Aluminium Lugs (Assorted) No. 60

28 Grouting of SP-66 Steel Tubular Pole/Stay Set No. 83

29 11 KV C.T.P.T Set (INSTALLATION ONLY) No. 1

N.B: 11/0.4KV DTR’s, C.T.P.T, Breakers and Control & Relay Panels will be procured centrally from CGM (D),


contractor.



Tender Proforma part-II (Price Bid)

NIT No. CEO/TEC/APDCL/CAR/2011/PS(J)/T&B/…111…………….. Submission date of Tender: 19.10.13

Package for which tendered: PS(J)/B/02 :-Construction of 11 KV line & 11/0.4 KV S/S including

Augmentation of Sub-Station Accessories at Biswanath Chariali ,

Name and full address of the Tenderer:

Sl.

No

Items QT

Y Unit Unit Rate

(Rs.) Max Amount

Payable (Rs.)

1 Supply, Erection of 8.5 metres PSC pole perpendicular to the ground

including excavation of earth pit with depth of 1/5th

of the length of the

pole including earth filling, boulder packing & ramming up to the ground

level

17 Nos.

2 Supply, fitting and fixing of 11 KV Channel Cross Arm

(10X50x6X2200mm) MS

24 Nos.

3 Supply, fitting and fixing of HT Stay Set 5 Sets

4 Supply, fitting and fixing of HT Guy Insulator 5 Nos.

5 Supply, fitting and fixing of HT Stay Wire 50 Kg

6 Supply, fitting and fixing of 11KV Disc Insulator,

70 KN polymer

24 Nos.

7 Supply, fitting and fixing of Hardware Fittings for Disc Insulator 24 Sets

8 Supply, fitting and fixing of 11 KV Pin Insulator with GI pin polymer 18 Nos.

9 Supply ,fitting & fixing of AAA Raccon Conductor 0.8 Km

10 Grouting of Isolator structure supplying all materials. 1 Set

11 Erection ,testing ,charging & Commissioning of 11/0.4, 1x63KVA

Transformer

1 No.

12 Supply, fitting and fixing of Gang Operated Switch,400 A 3 Sets

13 Supply ,fitting & fixing of DO Fuse Set,150 Amps 3 Set

14 Supply, fitting & fixing of C I. Earth Pipe by digging of earth pit using

standard earth pipe and finely broken charcoal surrounding the pipe and

connecting Wires.

8 Nos.

15 Supply , fitting & fixing of GI Wire,6 SWG including guarding 100 Kg

16 Supply fitting & fixing of Aluminium lug (Assorted) 24 Nos

17 Supply, fitting & fixing of the Danger Plates 10 Nos.

18 Supply, fitting & fixing of pilfer proof meter cabinet 1 No

19 Supply, fitting and fixing of 11KV LA, 9 KA station type including

connection of earthing wire to the earthing electrode with nuts –bolts,

washer etc.

3 Set

20 Fitting & fixing of 11 KV Autorecloser 1 Set

21 Supply , fitting & fixing of MS Nuts & Bolts with washer 25 Kg

22 Supply , fitting & fixing of 11 KV isolator with earth switch & G.I

mounting structure. 1 Set

23 Supply, fitting and fixing of T cross arm 5 Nos

24 Supply of gravel 40 mm size for switchyard including Spreading 92 Cum

25 Supply, fitting and fixing of 10 core 2.5mm copper cable 7 Set

26 Fitting and fixing of 11 KV CT-PT Set 1 Set

27 Supply, fitting and fixing of CFL light 40 W with accessories 10 Set

28 Supply, fitting and fixing of out door cable kit(300Sqmm) 2 No

29 Supply, fitting and fixing of 11 KV, 3-core XLPE Cable 300 Sqmm 200 Mtr

30 Supplying fitting & fixing of Tension clamp for Raccoon 24 No

31 Supplying fitting & fixing of barbed wire 25 Kg

N.B: 1) Rate including supply, erection, testing and commissioning but in case of SL. No.-11,20

& 26 only , erection, testing and commissioning rate to be quoted .


and designation of the Bidder (Authorized person)



Annexure-I (B)

BOQ for Package No- PS(J)/B/02

CONSTRUCTION OF 11 KV LINE & 11/0.4KV S/S INCLUDING AGUMENTATION OF 33/11 KV

SUB-STATION ACCESSORIES (B.CHARIALI)

1. PSC Pole 8.5 Mtr Nos. 17

2. MS Channel X Arm (100x50x6x2200mm) Nos. 24

3. HT Stay Set Set 5

4. Guy Insulator Nos. 5

5. Stay Wire 7/10 SWG Kg 50

6. Disc Insulator 70 KN Polymer Nso. 24

7. Hardware fittings for Disc Nos 24

8. 11 KV ,3 Core XLPE Cable 11 KV 300 Sqmm Mtr 200

9. T Cross Arm Nos. 5

10. 11 KV Pin Insulator With GI Pin polymer Set 18

11. 11 KV Isolator With earth switch & G.I mounting structure Set. 1

12. AAAC Raccoon Conductor Km. 0.8

13. Tension Clamp For Racoon Set 24

14. 11/0.433KV 63 KVA Transformer (INSTALLATION ONLY) No. 1

15. 11 KV GOAB Switch 400 A Set 3

16. 11 KV D.O Fuse 150 amp Set 3

17. C.I Earth Pipe Nos. 8

18. GI Wire 6 SWG Kg. 100

19. Metering Cabinet No. 1

20. Danger Plate 11 KV Nos. 10

21. 10 Core Cable 2.5 Sqmm Cu. Mtr 7

22. 11 KV 9 KA Line Type Station Arrestor Set 3

23. 11 KV Outdoor Cable Kit 300 Sqmm 3 Core Set 2

24. Nuts & Bolts with washer Kg 25

25. 11 KV Autorecloser (INSTALLATION ONLY) Set 1

26. 11 KV C.T.P.T Set (INSTALLATION ONLY) Set 1

27. Switchyard gravelling Cum 92

28. Barbed wire Kg 25

29. Switchyard Lighting (Should be Sufficient for Lighting of the Sub-Station)

(10 Nos of CFL LIGHTING FIXTURE INCLUDING CFL (40 Watt) WITH

WIRING ETC ON EXISTING & NEW STEEL STRUCTURE)

Set 10

30. Grouting of isolator structure No 1

31. Aluminum lug assorted No 24

N.B: 11/0.4KV DTR’s, C.T.P.T, Breakers and Control & Relay Panels will be procured centrally from CGM (D),


contractor.



GENERAL REQUIREMENTS

The bidder shall comply with the following general requirements along with other specifications.

1.0 QUALITY ASSURANCE PLAN

1.1 The bidder shall invariably furnish the following information along with his offer failing which the

offer shall be liable for rejection. Information shall be separately given for individual type of

equipment offered.

i) The structure of organization

ii) The duties and responsibilities assigned to staff ensuring quality of work

iii) The system of purchasing, taking delivery and verification of materials

iv) The system for ensuring quality of workmanship

v) The quality assurance arrangements shall confirm to the relevant requirement of ISO 9001 on

ISO 9002 as applicable.

vi) Statement giving list of important raw materials, names of sub-supplies for the raw materials,

list of standards according to which the raw material are tested, list of tests normally carried

out on raw material in the presence of suppliers representative, copies of test certificates.

vii) Information and copies of test certificates as on (i) above in respect of bought out items

viii) List of manufacturing facilities available

ix) Level of automation achieved and list of areas where manual processing exists. x) List of areas in manufacturing process, where stage inspections are normally carried out for

quality control and details of such test and inspection. xi) List of testing equipment available with the bidder for final testing of equipment specified and

test plant limitation, if any vis-à-vis the type. Special acceptance and routine tests specified in

the relevant standards. These limitations shall be very clearly brought out in "Schedule of

Deviations" from the specified test requirement.

1.2 The contractor shall within 30 days of placement of order, submit the following information to the

purchaser.

i) List of the raw material as well as bought out accessories and the names of sub-suppliers

selected from those furnished along with the offer.

ii) Type test certificated of the raw material and bought out accessories if required by the

purchaser.

iii) Quality Assurance Plant (QAP) with hold points for purchasers inspection. QAP and

purchasers hold points shall be discussed between the purchaser and contractor before the

QAP is finalized.

The contractor shall submit the routine test certificates of bought out accessories and central excise

asses for raw material at the time of routine testing if required by the purchaser and ensure that the

quality assurance requirements of specification are followed by the sub-contractor.

1.3 The Quality Assurance Programme shall give a description of the Quality System and Quality Plans

with the following details.

i) Quality System

The structure of the organization.

The duties and responsibilities assigned to staff ensuring quality of work.

The system of purchasing, taking delivery of verification of materials

The system of ensuring of quality workmanship.

The system of control of documentation.

The system of retention of records.



The arrangement of contractor internal auditing .

A list of administrator and work procedures required to achieve contractors quality

requirements. These procedures shall be made readily available to the purchaser for

inspection on request.

ii) Quality Plans

An outline of the proposed work and program sequence .

The structure of contractor’s organizations for the contract.

The duties and responsibilities ensuring quality of work.

Hold and notification points.

Submission of engineering documents required by this specification.

The inspection of the materials and components on request.

Reference to contractors work procedures appropriate to each activity.

Inspection during fabrication /construction.

Final inspection and test.

2.0 Training of Personnel

The contractor shall provide necessary facilities for training personnel at their works/principals

works relating to design, manufacture, assembly and testing and operation maintenance for six

personnel free of cost. However, travel and incidental charges of the personnel will be borne by the

purchaser.

3.0 Inspection

3.1 The Owner's representative or third party nominee 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

Contractor's and sub-Contractor's works, raw materials, manufacture of the material and for

conducting necessary test as detailed herein.

3.2 The material for final inspection shall be offered by the Contractor only under packed condition

as detailed in the specification. The Owner shall select samples at random from the packed lot

for carrying out acceptance tests. Insulators shall normally be offered for inspection in lots not

exceeding 5000 nos. the lot should be homogeneous and should contain insulators

manufactured in the span of not more than 3-4 consecutive weeks.

3.3 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.

3.4 No material shall be dispatched from its point of manufacture before it has been satisfactorily

inspected and tested unless the inspection is waived off by the Owner in writing. In the latter

case also the material shall be dispatched only after satisfactory testing for all tests specified

herein have been completed.

3.5 The acceptance of any quantity of material shall be no way relieve the 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.

4.0 Additional Tests

4.1 The Owner reserves the right of having at his own expense any other test(s) of reasonable

nature carried out at Contractor's premises, at site, or in any other place in addition to the type,

acceptance and routine tests specified in these bidding documents against any equipments to



satisfy himself that the material comply with the Specifications.

4.2 The Owner also reserves the right to conduct all the tests mentioned in this specification at his

own expense on the samples drawn from the site at Contractor's premises or at any other test

center. In case of evidence of noncompliance, it shall be binding on the part of the Contractor to

prove the compliance of the items to the technical specifications by repeat tests or correction of

deficiencies, or replacement of defective items, all without any extra cost to the Owner.

5.0 Test Reports

5.1 Copies of type test reports shall be furnished in at least six (6) copies along with one original.

One copy shall be returned duly certified by the Owner only after which the commercial

production of the concerned materials shall start.

5.2 Copies of acceptance test reports shall be furnished in at least six (6) copies. One copy shall be

returned duly certified by the Owner, only after which the material shall be despatched.

5.3 Record of routine test reports shall be maintained by the Contractor at his works for periodic

inspection by the Owner's representative.

5.4 Test certificates of test during manufacture shall be maintained by the Contractor. These shall be

produced for verification as and when desired by the Owner.

6.0 List of Drawings and Documents:

6.1 The bidder shall furnish the following along with bid.

i) Two sets of drawings showing clearly the general arrangements, fitting details, electrical

connections etc.

ii) Technical leaflets (users manual) giving operating instructions.

iii) Three copies of dimensional drawings of the box for each quoted item.

The manufacturing of the equipment shall be strictly in accordance with the approved drawings and

no deviation shall be permitted without the written approval of the purchaser. All manufacturing and

fabrication work in connection with the equipment prior to the approval of the drawing shall be at the

supplier's risk.

Approval of drawings/work by purchaser shall not relieve the supplier of his responsibility and

liability for ensuring correctness and correct interpretation of the drawings for meeting the

specification.

6.2 The requirements of the latest revision of application standards, rules and codes of practices. The

equipment shall conform in all respects to high standards of engineering, design, workmanship and

latest revisions of relevant standards at the time of ordering and purchaser shall have the power to

reject any work or materials which, in his judgment is not in full accordance therewith.

6.3 The successful Bidder shall within 2 weeks of notification of award of contract submit three sets of

final versions of all the drawings as stipulated in the purchase order for purchaser's approval. The

purchaser shall communicate his comments/approval on the drawings to the supplier within two

weeks. The supplier shall, if necessary, modify the drawings and resubmit three copies of the

modified drawings for their approval. The supplier shall within two weeks. Submit 30 prints and two

good quality report copies of the approved drawings for purchaser's use.

6.4 Eight sets of operating manuals/technical leaflets shall be supplied to each consignee for the first

instance of supply.



6.4.1 One set of routine test certificates shall accompany each dispatch consignment.

6.4.2 The acceptance test certificates in case pre-dispatch inspection or routine test certificates in cases

where inspection is' waived shall be got approved by the purchasers.

7.0 Any Item specification if not available in this document Contractor shall supply and execute the

items meeting the relevant IS specification with the approval of the purchaser



SECTION -2



1.0 TECHNICAL SPECIFICATION FOR EXECUTION OF WORK

(FOR 33KV/11KV & LT LINES)

1.0 SCOPE : ERECTION OF 11 KV LINES & LT LINES WITH STP-SP66 & 9.75

M, 8.5 M AND 7.5 M PSC POLES

The scope covers the survey of the proposed route, tree clearance wherever necessary transport

of materials to the locations, erection of the line testing of the line and handing over to the

APDCL(CAR) as per specification. Materials such as steel, cement, PSCC Poles, top cleats,

clamps, washers, earth wires, HBG metal, sand, water, cost of bolts and nuts etc., as given in

Annexure-1 are to be procured by the contractor cost of which shall be included in the bid.

2.0 General :

The Contractor should be well acquainted with the IE Rules 1956 as amended

from time to time and with the Indian Telegraph Act 1889 so that necessary

provisions therein may be followed.

3.0 SURVEY OF THE RUTE

The Tentative route map of the line to be erected will be furnished by the APDCL(CAR) to the

Contractor along with the copy of the concluded agreement.

The Contractor is required to carry out the detailed survey of the route of the line and fix up the

locations at the average span indicated in the schedule and mark the locations and submit a

detailed route map to the Engineer in charge of the work within 30 days for approval. In the

course of surveying by the contractor, any conspicuous variations in the change and physical

feature to those indicated in the route map and as actually existing are noticed, the deviations

must be brought to the notice of the APDCL(CAZ) Engineer. The APDCL(CAZ) Engineer if

considered necessary shall make alterations, which shall be carried out accordingly and the

APDCL(CAZ) after inspecting the surveyed route and the revised route map shall be given for

final approval in writing. The contractor shall not commence the work until the final approval

of the route map is given by the Engineer in charge in writing to the contractor.

4.0 WAY LEAVES AND TREE CUTTINGS

Proposals for way leaves and right of way shall be submitted by the contractor. Permission will

be obtained by the APDCL(CAZ) within reasonable time for which due notice shall be given

by the Contractor. The Contractor shall arrange for tree cutting or tree branches cutting also.

The widths of tree clearance to be adopted for lines of various voltages are as detailed below:

a) 11 KV Line and LT (Normal Line)

All growth within 4.572 M (15 ft) on both side from center line of support and all trees that

may fall and foul the line.

b) 11 KV / 33 KV LINE (Trunk Line)



All growth within 6.096 M (20 ft) from the center line of support and all trees which may

fall and foul the line.

The Contractor shall take all possible steps to see that standing crops, etc. are not damaged

while attending to tree cutting. When such damage is inevitable the compensation will be

borne by the APDCL(CAZ) provided the damage is with the prior concurrence of the

Engineer. The Contractor shall bear the compensation for damage caused by the gangs

without prior concurrence of the Engineer concerned.

No trees shall be cut until the APDCL(CAZ) has made necessary arrangement with the

authorities concerned and permission is given to the Contractor to fell such trees. The

contractor shall arrange to remove the obstacles as soon as possible.

At such times, when it may not possible for APDCL(CAZ) to arrange right-of-way for

excavation of pole pits or erecting the poles of stringing the line, then at all such times, the

contractor shall shift his gangs to other areas. The rates quoted shall cover all such

contingencies and no extra payments shall be claimed for such contingencies.

5.0 EXCAVATION OF POLE PITS, STAY PITS AND D.P. PITS

5.1 After the final survey of the line and after marking the pole locations with pegs, excavation

work has to be commenced in accordance to the approved route map. Excavation is generally

done by pick axes, crow V-bars and showers although some times earth augers are used.

Excavation of pole pits in very hard or rocky soil or in rock beds, may involve blasting with

suitable explosives. The pits for the supports are excavated in the direction of the line as this

will facilitate the erection of support are excavated in the direction of the line as this will

facilitate the erection of support, in addition to giving greater lateral stability, the depth of the

foundation to be excavated for poles shall be in accordance with relevant sketch for the

erection of pole or stay of D.P. etc.

6.0 ERECTION OF SUPPORTS

After the excavation of pits is completed the supports to be erected may be brought to the pits

location. Then the pole may be erected inside the pit. Wooden support may be utilized to

facilitate lifting of the pole at the pit locations.

Before the pole is put into pit, RCC padding may be laid below the pole to increase the surface

contact between the pole and the soil. The padding will distribute the weight of the pole

uniformly on the soil.

Having lifted the pole, the same should be kept in a vertical position with the help of manila

rope of 25 mm dia using the rope as a temporary anchor.

As the poles are being erected say from the pole already erected to the next location where the

pole is being erected, the alignment of the poles are to be checked and set right by visual check.

The verticality’s of the poles are to be checked with a spirit level on both transverse and

longitudinal directions.

Having satisfied that the verticality and alignment are all right, earth filling or concreting is to

be done.



In swampy and special locations, however, before earth filing, the poles are to be concreted up

to ground level of the pit.

After the poles have been set the temporary anchors are to be removed. The supports shall be

buried to a depth as per sketch enclosed.

7.0 ERECTION OF D.P. STRUCTURES FOR ANGLE LOCATIONS (FOR 33/11

KV LINES):

Generally, for angles of deviation more than 20° double pole structures of spacing 1.2 mts (4.0

ft) may be erected. The pits are to be excavated as per bisection of the angle of deviation.

After the poles are erected, the horizontal / cross bracing should be fitted and the supports held

in a vertical position with the help of temporary guys of manila rope of at least 25 mm dia.

Ensuring that the poles are held in a vertical position (this can be checked with a spirit level)

the concreting of the poles with cement, granite chips of size 20/30 mm mesh and sand in the

ratio M400 conforming to ISS is to be done from the bottom of the support to the ground level.

Before lifting the pole in the pit, concrete padding of not less than 75 mm thickness may be put

for the distribution of the load of the support on the soil.

After the concreting is done, the pit may be filled with earth after curing of the concrete is

completed.

Four stays along the line, two in each direction and two stays along the bisection of angle of

deviation are to be provided.

Stay concreting may be done with M 400 concrete mixture.

The D.P. shall be erected as per the sketch enclosed.

8.0 ANCHORING AND PROVIDING GUYS FOR SUPPORTS

Guys are to be provided to the supports at the following places (i) Angle locations, (ii) Dead

end locations, (iii) Tee-off points, (iv) Steep gradient locations to avoid uplifted on the poles.

The installation of guy will involve the following works:

i) Excavation of pit and fixing of stay rod.

ii) Fastening guy wire to the support.

iii) Tightening guy wire and fastening to the anchor

The marking of the guy pit for excavation, the excavation of pits and setting of the anchor rod

must be carefully carried out. The stay rod should be placed in the position such that the angle

of inclination of the rod with the vertical face of the point is 30°/45° as the case may be. The

concreting of the stay at the bottom should then be carried out. The back filling and ramming

must be well done thereafter, and allowed to set for at least 7 days. The free end of the guy wire

is passed through the eye of the anchor rod, bent back parallel to the main portion of the guy

and bound after inserting the G.I. Thimble. The loop is protected by the G.I. Thimble, where it

bears on the anchor rod. Where the existence of guy wire proves hazardous, it should be

protected with suitable asbestos pipe, filled with concrete of about 2 mts length above the

ground level, duly painted with white and black stripe so that it may be visible at night. The



turn buckle shall be mounted at the pole end of the stay and guy wire so fixed that the eye bolt

turn buckle is half way in the working position, thus giving the maximum movement for

tightening or loosening.

Guy insulators are placed to prevent the lower part of the guy from becoming electrically

energized by a contact of the guy when the conductors snap and fall on them of due leakage.

No guy insulator shall be located less than 2.6 mts. from the ground.

The anchoring and providing guys for supports (Single guy Bow guy fly guy) shall be done as

per sketch enclosed. Bow guy and fly guy shall be provided as per field conditions.

9.0 FIXING OF CROSS ARMS INSULATORS

After the erection of supports and providing guys, the next step would be to mount the cross

arms on the support erected. The lineman should climb the support having requisite tools with

him and the cross arm is then tied to a hand line and pulled up by the ground man and should

station himself well to one side so that if any material drops from the top of the pole it may not

strike him. All the materials required should be lifted or lowered by means of the hand line. In

no case, the materials of the tools should be dropped or thrown from the pole top.

The fixing of 33 KV, 11 KV and LT Cross arms shall be in accordance to spacing detailed in

Sketch. G.I. bolts and nuts and spring washers of good quality only shall be used which will

have to be procured by the contractor.

9.1 Back Clamps

The back clamps for fixing of the seating channels, “V” cross arms, horizontal cross

arms and top cleats will have to be procured by the contractor and shall be in

accordance with sketch enclosed and the clamp shall be fabricated with 75 X 8 mm

M.S. Flat for 33 KV and 50 X 8 mm M.S Flat for 11 KV and LT.

9.2 Top Cleats

The top cleats shall be got fabricated with M.S. Channel of size 75 X 40 mm for 33 KV

and 11 KV and shall be in accordance with sketch enclosed..

10.0 INSULATORS

The pins for insulators shall be fixed in the holes provided in the cross arms and the pole top

brackets. The insulators shall be mounted in their places over pins and tightened. In the case

of strain or angles supports, where strain fittings are provided for this purpose, one strap of

the strain fitting is placed over the cross arm before placing the bolts in the hole of the cross

arms. The nut of the strap is so tightened that the strap can move freely in horizontal

direction, as this is necessary to fix the strain insulator.

The insulator shall be cleaned and examined for defects before fixing, it shall be ensured

that all the current carrying parts are smooth and without dirt, cracks or chips.

11.0 STRINGING OF THE LINE CONDUCTORS



11.1 For the guidance of the contractor certain do’s and don’ts are given below before the

workmen actually commence the stringing work.

11.2 Do’s and Don’ts

DO’s

i. Use proper equipment for handling aluminum conductors at all times.

ii. Use skids, or similar method for lowering reels or coils from transport or

ground.

iii. Examine reel before unreeling for presence of nails or any other object,

which might damage the conductor.

iv. Rotate the reel or coil while unwinding conductor.

v. Grip all strands while pulling out the conductor.

vi. Control the unreeling speed with suitable braking arrangement.

vii. Use wooden guards of suitable braking arrangement.

viii. Use long straight, parallel jaw grip with suitable liners when pulling

conductor thus avoiding nicking or kinking of the conductor.

ix. Use free running sleeves or blocks with adequate grooves for drawing/paving

conductors.

x. Use proper sag charts.

xi. Mark conductors with crayons or adhesive tape of such (other) material,

which will not damage the strand.

xii. Make all splicing with the proper tools.

xiii. Use a twisting wrench for twisting the joints.

xiv. Chromite or graphite conducting oxide-inhibiting grease should be used

before cleaning with wire brush.

DON’Ts

i. Do not handle conductors without proper tools at any stage.

ii. Do not pull conductors without ensuring that there are no obstructions on the

ground.

iii. Do not pull out excess quantity of conductor than is required.

iv. Do not make jumper connections on dirty or weathered conductor.

v. Do not handle aluminum conductors in a rough fashion but handle it with

care it deserves.

11.3 CONDUCTOR ERECTIONS

The erection of overhead line conductor is a very important phase in construction. The

erection of conductors can be sub-divided into 4 separate parts as follows:

i. Transport of conductors to work site.

ii. Paving and stringing of conductors.

iii. Tensioning and sagging of conductors.

iv. Joining of conductors.

At the important crossing of roads, canals, navigable rivers, railways etc., flagmen should be

in attendance to ensure that normal services are not unduly interrupted. These crossing

should only be carried out in conjunction with and with the approval of the proper

authorities concerned.

The conductor drums shall be transported to the tension point without injuring the

conductor, if, it is necessary to roll the drum on the ground for a small distance, it should be



slowly rolled in the direction of the marked on the drum. The drum should be so supported

that it can be rotated freely. For this purpose the drum should either be mounted on the cable

drum supports of jacks or hung by means of chain pulley of suitable capacity, suspended

from a tripod. In case if it is not possible to raise the conductor drum by any of the above

method, a trench of suitable depth slightly bigger than the conductor drum may be dug, so as

to facilitate free rotation of the cable drum when it is suspended in the trench by means of

M.S. Shaft. While paving, care should be taken to see that conductor does not rub against

any metallic fitting of the pole or on the bad/rocky ground. Wooden trusses should be used

for this purpose to support the conductor. The conductor should be passed over the poles on

wooden or aluminum snatch pulley blocks provided with low friction bearings. While

conductor is being paved out slowly, some braking arrangement should be made so that the

rotation of the drum may be stopped in emergency.

In case the length of one piece of the conductor is less than the length of the section in

which conductor paving is being done, it is easy to stretch one length of all phases from one

end the remaining length from another end of the section any part of the conductor shall be

left at a height of less than that of 5 meters, above the ground by rough sagging.

11.4 Mid Span Jointing of Conductors

The mid span jointing of conductors can be carried by twisting the joint at the ends and the

wire should project a few centimeter, beyond the end of the sleeves. The projected wires are

given a sharp bend to keep them from slipping out of the sleeve. The end of the sleeves are

then held tightly by twisting wrenches and then 4 to 5 turns in one direction generally anti-

clock wise direction. Crimping Tools are preferably to be used for joints and jumpers.

11.5 SAGGING AND TENSIONING

On the completion of the paving of the conductors and making mid span joints if any,

tensioning operations will commence. Temporary guys will have to be provided for both the

anchoring supports in the section where the stringing has to be done. At the tensioning end,

one of the conductors is pulled manually up to a certain point and then come along clamp is

fixed to the conductor to be tensioned. The grip to the come along clamp is attached to

double sleeve pulley block or the pulley lift machine and gradually tensioned.

The conductor should then be sagged in accordance with the sag temperature chart for the

particular conductor and span. The sag should then be adjusted in the middle span of the

section. The sag chart is to be provided. The stretch of the conductor has to be taken out

before stringing in order to avoid the gradual increase in sag due to the setting down of the

individual wires. There are ways of accomplishing this:

a) Pre-stressing

In this method the conductor is pulled up to tension considerably above the correct figures,

but never exceeding 50% of breaking load for a short period of say twenty minutes. As this

method requires more time and involves the use of stronger tackle to secure the higher

tension the other method of over tensioning is commonly adopted.

b) Over-tensioning



This method consists of pulling up the conductor to a tension a little above the theoretical

tension for prevailing temperature and fixed it up at that tension with correspondingly

reduced sag. After a certain time the conductor will settle down to the correct sag and

tension. A tension of five to eight percent more than the theoretical value has been found to

be suitable for the sizes of ACSR and AAAC conductors standardized by REC. The ambient

temperature during sagging may be recorded correctly.

Conductors can be sagged correctly only when the tension is the same in each span

throughout the entire length of section. Use of snatch blocks reduces the friction and

chances of inequality of tension in various spans.

Sagging can be accomplished by several different methods but most commonly used method

is “Slighting”. The slighting sag method of measuring sag is by the use of targets placed on

the supports below the cross arms. The targets may be light strip of wood clamped to the

pole at a distance equal to the sag below the conductor when the conductor is placed in

snatch block. The lineman sees the sag from the next pole. The tension of the conductor is

then reduced or increased, until the lowest part of the conductor in the span coincides with

the lineman’s line of sight.

When sagging is completed, the tension clamps shall be fixed. The clamp can be fitted on

the conductor without releasing the tension. A mark is made on the conductor at a distance

from the cross-arm equal to the length of complete strain insulator. Before the insulator set

is raised to position, all nuts should be free. Come along clamp is placed on the conductor

beyond the conductor clamp and attached to the pulling unit. The conductor is pulled in

sufficiently to allow the insulator assembly to be fitted to the clamp. After the conductor is

clamped to insulator, assembly unit may be released gradually.

If the tension is released with a jerk, an abnormal stress may be transferred to conductor and

support, which may result in the failure of the cross arm, stay or pole in some cases. After

the stringing is completed, all poles, cross arms, insulators, fittings etc. are checked upto

ensure that there have been no deformities etc.

The next step is to place the conductor on the top of the pin insulator from the snatch block

and removing snatch blocks. Conductors are then fastened to insulator by the use of

aluminum wires. The following points should be observed:

i) Proper size of the tie binding wire which can be readily handled and with adequate

strength is to be used.

ii) The length of tie wire should be sufficiently long for making complete tie including

the end allowances for gripping with ends.

iii) A good tie should provide a secure binding between the line conductor and insulator

and should reinforce the conductor on either side of the insulator.

iv) The use of cutting pliers for binding the tie wire should be avoided.

v) The tie wire which has been used previously should be reused

Before tying the conductor to the insulator two layers of Aluminum tapes should be wrapped

over the conductor in the portion where it touches the insulator. The width and thickness of

aluminum tape to be used for a specific size of conductors has been specified in hand books

of aluminum conductor manufacturers and the same be referred to. The Aluminum tapes

should also be used at the tension clamp and for proper grip.



Normally in straight runs of line, the conductors are run on the top of insulators. When there

is small of deviation the conductor is placed inside groove and bound. Accordingly, there

are two methods of tying the conductors to insulators. The binding wire/tie wire has to be

procured by the contractor and the bid price shall include the cost of this.

11.6 The contractor shall be entirely responsible for any damage to the supports, other

accessories and conductor. He shall also be responsible for proper distribution of the

conductor drums to keep number and lengths of cut pieces of the conductor to a minimum.

11.7 CONDUCTOR DAMAGE AND REPAIR

If the conductor is damaged for whatever reasons, and damage is not repaired by aluminum

sleeves, etc., it shall be brought to the notice of the Engineer and shall not be used without

his approval. Even repairing of conductor surfaces shall be done only in case of minor

damages, scuff marks etc., which are safe from both electrical and mechanical points of

view. The final; conductor surface shall be clean, smooth, without any projection sharp

points, cut or abrasion etc. giving satisfactory corona and R.I. performance.

11.8 No joints or splice be made in span’s crossing over main roads, railways, small rivers or

intension spans. Not more than one joint per conductor shall be allowed in one span. The

strength of the joint shall conform to IE Rule 75.

11.9 STRINGING.

Whatever necessary ground clearances have to be measured to ensure obtaining adequate line

clearance as per IE Rule 77 (i)

12.0 EARTHING

12.1 Pipe Earthing

At D.P Locations, Pits are to be excavated the steel and metal parts are to be earthed by pipe

earthing as per the drawing or sketch enclosed to this specification. Duly filling the pits with

finely broken coke having granule sizes not more than 25 mm thick. The coke shall be

maintained up to a distance of 300 mm for the pipe on all sides. The top edge of the pipe

shall be at least 200 mm below the ground level. The CI strips shall be fixed not less than

300 mm deep from the ground level.

The tenders shall quote the charges for earthing inclusive of the cost of coke, excavation and

back filling.

12.2 Pole Earthing: Supports shall be properly earthed.

13.0 CONCRETING

13.1 The cement concrete used for the foundations shall be of M 400 grade.

13.2 The full concreting for the poles if erected in excavated act shall be done so

that the complete block will be of dimensions( 0.6 X 0.6 X 1.6) + 0.2 X 0.2

Mtr. (0.6 X 0.6 X 1/35) + 0.2 X 0.2 X 0.2 Mtrs. so as to maintain as exposed

portion for 0.2 Mtrs height above the ground level.



13.3 If augur is used for making pole pits, ramming shall be done after erection of

pole.

14.0 WORKMANSHIP

The contractor shall entirely be responsible for correct erection of all support as per the

approved drawings, and their correct setting and alignment, as approved by the engineer. If

the supports and D.P. structures after the erection are found to differ from approved route

maps and drawings or to be out of alignment, the contractor shall dismantle and re-erect

them correctly at his own cost without extension of time. The supports must be truly vertical

and in plumb after erection and no straining will be permitted to bring them to vertical

position. Verticality of each support shall be measured by the contractor and furnished to the

Engineer.

15.0. Location numbers for each pole shall be painted on the pole.

Anti-climbing devices, and danger boards are to be provided at all railway crossings and

road crossings. No extra charges shall be admissible even though separate gangs may have

to be sent by the contractor for fitting these accessories and attachments on the support at the

appropriate time.

16.0. FINAL CHECKING, TESTING AND COMMISSIONING

After the completion of the work final patrolling and checking of the line shall be done by

the contractor to ensure that all foundations work, pole erection and stringing have been

done as approved by the Engineer, and also to ensure that they are completed in all respects.

Contractor shall prepare pole schedules and hand it over to the Engineer. All works shall be

thoroughly inspected keeping in view of the following main points.

i) Sufficient back filled earth is lying over each foundation pit and it is adequately

compacted.

ii) Concreting and coping of poles are in good and finally shaped conditions.

iii) All the accessories and insulators are strictly as per drawings and are free from any

defects or damages, what-so-ever.

iv) All the bolts and nuts should be of G.I material and as per contractual provisions.

v) The stringing on the conductor has been done as per approved sag and desired

clearances are available.

vi) No damage, minor or major to the conductor, earth wire, accessories and insulator

strings still unattended are noticed.

vii) For all points double jumpers shall be provided to each phase. The jumpers provided

at the cut points are connected rigidly to the tension hardware utilizing all the

jointing bolts provided for the purpose.

The contractor shall submit a report to the above effect to the Engineer. In case, it is noticed

later that some or any of the above are not fulfilled the Engineer will get such items rectified

through other agencies and recover the cost of such works from the bills payable to the

contractor against that contract or any other contract executed by him for APDCL(CAZ).



After final checking, the lines shall be tested for insulation in accordance with tests

prescribed by the Engineer. All arrangements for such testing or any other tests desired by

the Engineer shall be done by the Contractor and necessary labour, transport and equipment

shall be provided by him. Any defects found out as a result of such tests, shall be rectified

by the Contractor, forthwith, without any extra charges to APDCL(CAZ).

In addition to the above, the Contractor shall be responsible for testing and ensuring that the

total and relative sags of the conductors are within the specified tolerance. Such tests shall

be carried out at selected points along the route as required by the Engineer and the

Contractor shall provide all necessary equipment and labour to enable the tests to be carried

out.

The APDCL(CAR) will arrange statutory inspection of the line and indicate the defects

noticed. The Contractor has to rectify all such defects and intimate to APDCL(CAR)

Engineer.

After satisfactory tests on the line and an approval by the Engineer the line shall be

energized at full operating voltage before handing over.

17.0. SUPPLY OF CONSTRUCTION MATERIALS BY THE CONTRACTOR

The Contractor has to make his own arrangements for procurement, supply and use of

construction materials like cement, M.S. rounds, HBG metal and sand.

17.1. CEMENT

The contractor has to make his own arrangements for the procurement of cement to require

specifications required for the work subjected to the follows:

a) The contractor shall procure cement, required for the works only from reputed cement

factories (Man producer) acceptable to the Engineer-in-Charge. The contractor shall be

required to be furnished to the Engineer-in –Charge bills of payment and test certificates

issued by the manufacturers to authenticate procurement of quality cement from the

approved cement factory. The contractor shall make his own arrangement for adequate

storage of cement.

b) The contractor shall procure cement in standard packing of all 50 kg per bag from the

authorized manufactures. The contactor shall make necessary arrangement at his own cost to

the satisfaction of Engineer-in-Charge for actual weighment of random sample from the

available stock and shall conform to the specification laid down by the Indian Standard

Institution or other standard foreign institutions as the case may be. Cement shall be got

tested for all the tests as directed by Engineer-in-Charge at least one month in advance

before the use of cement hags brought and kept on site Godown. Cement bags required for

testing shall be supplied by the contractor free of cost. However, the testing charges for

cement will be borne by the APDCL(CAR). If the tests prove unsatisfactorily, then the

charges for cement will be borne by the contractor.

c) The contractor should store the cement of 60 days requirement at least one month in

advance to ensure the quality of cement so brought to site and shall not remove the same

without the written permission of the Engineer-in-Charge.



The contractor shall forthwith remove from the works area any cement that the Engineer-in-

Charge may disallow for use, an account of failure to meet with required quality and

standard.

d) The contractor shall further, at all times satisfy the Engineer-in-Charge on demand, by

production of records and books or by submission of returns and other proofs as directed,

that the cement is being used as rested and approved by Engineer-in-Charge for the purpose

and the contractor shall at all times, keep his records upto date to enable the Engineer-in-

Charge to apply such checks as he may desire.

e) Cement which has been unduly long in storage with the contractor or alternatively has

deteriorated due to inadequate storage and thus become unfit for use in the works will be

rejected by the department and no claim will be entertained. The contractor shall forthwith

remove from the work area, any cement the Engineer-in-Charge may disallow for use on

work and replace it by cement complying with the relevant Indian Standards.

17.2. STEEL

The contractor shall procure mild steel reinforcement bars, high yield strength

deformed(HYSD) bars, rods and structural steel etc. required for the works only from the

main or secondary producers manufacturing steel to the prescribed specifications of Bureau

of Indian Standards or equivalent and licensed to affix ISI or other equivalent certification

marks and acceptable to the Engineer-in-Charge. Necessary ISI list certificates are to be

produced to Engineer-in-Charge before use on works. The unit weight and dimensions shall

be as prescribed in the relevant Indian Standard specification for steel.

18.0. INFORMATION AND DATA

a) The information furnished is the best available however, the APDCL(CAR) does not

guarantee the correctness of interpretations, deductions or conclusions which are given

as supplementary information in the Bid Documents or in any reports, maps, drawings,

diagrams or in other reference information available to the bidder from APDCL(CAR)

of or otherwise.

The information has been produced as found, communicated to ascertained or

otherwise/learned by the APDCL(CAR).

b) it will be the Bidder’s responsibility to satisfy himself from the “Reference Information”

supplied and or inspection of the site that sufficient quantities of construction materials

required for the works shall exist in the designated borrow areas or quarry sites.

The APDCL(CAR) does not accept any responsibility either in handing over the quarries

or procuring the materials or any other facilities. The Tenderer will not be entitled for

any extra rate or claim for the misjudgment on his part for the quantity and quality of

materials available in the quarries.

Failure by the Bidder to have done all the timings which is in accordance with this

condition he is deemed to have done shall not relieve the successful Bidder of the

responsibility for satisfactorily completing the work as required at the rates quoted by

him.



2.0 TECHNICAL SPECIFICATION FOR POLES OF : 33 KV, 11 KV, AND L T

OVERHEAD POWER LINES

1.0 SCOPE

This covers supply of poles, insurance, storage, erection and commissioning of poles.

1.1 STEEL TUBULAR POLE

SP-76, 14.50 metre length seamless straight( Sweged type) tubular pole manufacturing out

form the electrically welded pipe in three sections having base plate of size 400mm x 400

mm x 10mm at the bottom of the pole and pole cap at the top of the pole. The inner side and

outer underground portion of the pole is to be painted black bituminous paint. The balance

outer portion of the pole(i.e. 12.00 mtr) is to be painted with 2 coats of metal primer and 2

coats of aluminium paint.

The pole is erected in 1:2:4 RCC foundation of size 2.50m x50 cm x50 cm having a PCC base

foundation of size 15 cm x 60 cm x 60 cm including edge brick soling and plastering above

G.L. portion complete with excavation of trances, handling of surplus soil, debris etc. to the

proper place and refilling etc. as specified and directed by the department.

COMPRISING OF FOLLOWING SPECIFICATION OF POLE

Specification:

a) IS-2713( Part-II) 1980 or amended from time to time .

b) Type-410 SP-76.

c) Size of section.

d) Weight of pole with base plate and arim= 380 Kg( Approx.)

e) Planting depth= 2.00 mtr.

Dia Thickness Length of Section

219.10 mm 5.90 mm 6.50 mtr( bottom)

193.70 mm 4.85 mm 4.00 mtr( Middle)

165.10 mm 4.50 mm 4.00 mtr( Top)

f) Type-410 SP-66.

g) Size of section.

h) Weight of pole with base plate and arim= 322 Kg( Approx.)

i) Planting depth= 2.00 mtr.

Dia Thickness Length of Section

219.10 mm 5.90 mm 5.8 mtr( bottom)

193.70 mm 4.85 mm 3.10 mtr( Middle)

165.10 mm 4.50 mm 3.10 mtr( Top)



Pole Clamp

The pole clamp is to made from MS Flat of size 40mm x 6 mm with necessary drilling of

holes and painting with primer and anti-corrosive aluminium paint suitable for steel tubular

pole of Size SP-76 & SP-66.

Nuts & Bolts & Ring washer

The MS Nuts and Bolts and washer should be of different sizes as require in site.

PCC POLES

2.1 SCOPE

This covers design manufacturing, testing at works, transport to site, insurance, storage, erection and

commissioning of PCC poles shall be of solid rectangular and Virendeel type with an overall length

of 7.5M, 8.50M, 9.75M and suitable for use in overhead 33KV and11 KV lines, L T lines and

double pole structures for 11/0.433 kV substations.

2.2 Applicable Standards

Except when they conflict with specific requirements in this Specific ht: 8nm, the psc poles shall

comply with the relevant provisions mentioned' in the' following Indian Standards or the latest

versions thereof.

a) IS: 1678, Specification for pre-stressed concrete poles for overhead power, traction and

telecommunication lines.

b) IS: 2905, Method of test for concrete poles for overhead power and telecommunication lines.

c) IS: 7321, Code of Practice for selection, handling and erection of concrete poles for overhead power

and telecommunication lines.

2.3 Terminology

.3.1. For the purpose of this specification, following definitions shall apply:

.3.1.1. Average Permanent Load

That fraction of the working load which may be considered of long duration over a period of one

year.

.3.1.2. Load Factor

The ratio of ultimate transverse load to the transverse load at first crack.

.3.1.3. Transverse

The direction of the line bisecting the angle contained by the conductor at the pole. In the case

of a straight run, this will be normal to the run of the line.

.3.1.4. Transverse Load at First Crack

For design, the transverse load at first crack shall be taken as not less than the value of the

working load.

.3.1.5. Working Load

The maximum load in the transverse direction, that is ever likely to occur, including the wind



pressure on the pole. This load is assumed to act at a point· 600 mm below the top with the butt

end of the pole planted to the required depth as intended in the design.

.3.1.6. Ultimate Failure

The condition existing when the pole ceases to sustain a load incrementowing to either crushing

of concrete, or snapping of the pre-stressing tendon or permanent stretching of the steel in any

part of the pole.

.3.1.7. Ultimate Transverse Load

The load at which failure occurs, when it is applied at a point 600 mm below the top and

perpendicular to the axis of the pole along the transverse direction with the butt end of the pole

planted to the required depth as intended in the design.

2.4 Application

2.4.1 7.5 M and 8.50 M Poles

These poles shall be used at tangent locations for L T lines in wind pressure zones of 50 kg/M2, 75

kg/M2 and 100 kg/M

2 in accordance with REC Construction Standards referred to in the following

table:

Pole Length Line Description Reference to REC

Construction Standard

7.5 M LT lines, Horizontal formation A-4, B-5

8.0 M LT lines, Vertical formation A-5, B-6

The maximum permissible spans shall be as per REC Construction Standard B 8 (for L T lines).

2.4.2 9.75 M

These poles shall be used for 33 kV lines, and for special locations in 11 kV lines, such as road

crossings, etc.

2.4.3 For use in cyclone affected Coastal areas, or in areas with higher wind pressures than indicated in

Clause 2.4.2, special designs of poles would have to be evolved for such areas.

2.5 Material

2.5.1 Cement

The cement used in the manufacture of pre-stressed concrete poles shall be ordinary or rapid

hardening Portland cement conforming to IS: 269 (Specification for ordinary and low heat Portland

cement) or IS: 8041 E (Specification for rapid hardening Portland cement), or high strength ordinary

Portland cement conforming to IS: 8112 (Specification of high strength ordinary Portland cement).

2.5.2 Aggregates

Aggregates used for the manufacture of pre-stressed concrete poles shall confirm to IS: 383

(Specification for coarse and fine aggregates from natural sources for concrete). The nominal

maximum size of aggregates shall in no case exceed 10 mm (for poles above 9.0 M) and 12 mm (for

7.5 and 8.0 M poles).

2.5.3 Water

Water should be free from chlorides, sulphates, other salts and organic matter, Potable water will be

generally suitable.

2.5.4 Admixture



Admixture should not contain Calcium Chloride or other chlorides and salts which are likely to

promote corrosion of pre-stressing steel.

2.5.5 Pre-stressing Steel

,

The pre-stressing steel wires including those used as un-tensioned wires (See

Annexure. I, II & III), should conform to IS: 1785 (part-I) (Specification for plain hard-drawn steel

wire for pre-stressed concrete. Part-I cold drawn stress relieved wire), IS: 1785 (part-II)

(Specification for plain hard-drawn steel wire) or IS: 6003 (Specification for indented wire for pre-

stressed concrete). The type designs given in Annexure-I, II and III are for plain wires of 4 mm

diameter with a guaranteed ultimate strength of 175 kg/mm2.

2.5.6 The concrete mix shall be designed to the requirements laid down for controlled concrete (also called

design mix concrete) in IS: 1343 (Code of practice for pre-stressed concrete) and IS: 456 (Code of

practice for plain and reinforced concrete), subject to the following special conditions:

a) Maximum works cube strength at 28 days should be at least 400 kg/cm2 (for poles above 9.0 M) and

420 kg/cm2 (for 7.5 and 8.0 M poles).

b) The concrete strength at transfer should be at least 200 kg/cm2 (for poles above 9.0 M) ·and 210 kg/cm

2

(for 7.5 and 8.0 M poles).

c) The mix should' contain at least 380 kg of cement per cubic meter of concrete.

d) The mix should contain as Iowa water content as is consistent with adequate workability. If it

becomes necessary to add water to increase the workability, the cement content also should be raised

in such a way that the original value of water cement ratio is maintained.

2.6 DESIGN REQUIREMENTS

The poles shall be designed for the following requirements:

a) The poles shall be planted directly in the ground with a planting depth as per IS: 1678.

b) The working load on the poles should correspond to those that are likely to come on the pole

during their service life. Designs given in Annexure I,ll and III are for 140 kg, 200 kg, 300 kg,

and 400 kg., applied at 0.6 M from top.

c) The factor of safety for all poles above 9.0 M shall not be less than 2.0. For 7.5 M and 8.5 M

poles, the factor of safety shall not be less than 2.5.

d) The average permanent load shall be 40% of the working load.

e) The F.O.S. against first load shall be 1.0.

f) At average permanent load, permissible tensile stress in concrete shall be 30 kg/cm2.

g) At the design value of first crack load, the modulus of rupture shall not exceed 53.0 kg/cm2 for

M-400 concrete and 55.2 kg/cm2 for M-420 concrete.

h) At the design value of first crack load, the modulus of rupture shall not exceed 53.0 kg/cm2 for

M-400 concrete.

i) The ultimate moment capacity in the longitudinal direction should be at least one fourth of that il1

the transverse direction.

j) The maximum compressive stress in concrete at the time of transfer of pre-stress should not exceed



0.8 times the cube strength.

k) The concrete strength at transfer shall not be less than half the 28 days strength ensured in the

design, i.e., 400 x 0.5 = 200 kg/cm2 or 420 x 0.5 = 210 kg/cm

2.

2.6.1 Service Conditions

PSCC poles have to be designed to suit the following climatic conditions:

a) Maximum temperature of air in shade 40°C

b) Minimum temperature of air in shade 2°C

c) Maximum temperature of air in sun 45°C

d) Maximum humidity 93%

e) Average number of thunder storm days per 45 Days

annum

f) Maximum rainfall per annum 3500 mm

g) Average rainfall per annum 2200 mm

h) Wind pressure 97.8 Kg/m2

i) Altitude above MSL 100 M to 1000 M

2.6.2 Dimensions and Reinforcements

The cross-sectional dimensions and the details of pre-stressing wires should conform to the

particulars given in Annexure-I, II and III.

The provisions of holes for fixing cross-arms and other fixtures should conform to the REC

standards referred to in clause 3.3 of this specification.

2.0.3 Manufacture

2.0.3.1 Attire--stressing wires and reinforcements shall be accurately fixed as shown in drawings and

maintained in position during manufacture. The un-tensioned reinforcement, as indicated in the

drawings, should be held in position by the use of stirrups which should go round all the wires.

2.6.3.2 AII wires shall be accurately stretched with uniform pre-stress in each wire. Each wire or a group of

wires shall be anchored positively during casing. Care should be taken to see that the anchorages do

not yield before the concrete attains the necessary strength.

2.6.4. Cover

The cover of concretE1 measured from the outside of pre-stressing tendon shall be normally 20 Nm.

2.6.5. Welding and Lapping of Steel

The high tensile steel wire shall be continuous over the entire length of the tendon. Welding shall not

be allowed in any case. However, jointing or coupling may be permitted provided the strength of the

joint or coupling is not less than the strength of each individual wire.

2.6.6. Compacting



Concrete shall be compacted by spinning, vibrating, shocking or other suitable mechanical means.

Hand compaction shall not be permitted.

2.6.7. Curing

The concrete shall be covered with a layer of sacking, canvass, Hessian or similar absorbent

material and kept constantly wet up to the time when the strength of concrete is at least equal to the

minimum strength of concrete at transfer of pre-stress. Thereafter, the pole may be removed from

the mould and watered at intervals to prevent surface cracking of the unit, the interval should

depend on the atmospheric humidity and temperature.

The pre-stressing wires shall be detensioned only after the concrete has attained the specified

strength at transfer (i.e., 200 or 210 kg/cm2 as applicable). The cubes cast for the purpose of

determining the strength at transfer should be cured, as far as possible, under conditions similar to

those under which the poles are cured. The transfer stage shall be determined based on the daily

tests carried out on concrete cubes till the specified strength indicated above is reached. Thereafter

the test on concrete shall be carried out as detailed in IS: 1343 (Code of pr3ctice for pre-stressed

concrete). The manufacturer shall supply, when required by the owner or his representative, result of

compressive test conducted in accordance with IS: 456 (Code of practice for plain and reinforced

concrete) on concrete cubes made from the concrete used for the poles. If the owner so desired, the

manufacturer shall supply cubes for test purposes and such cubes shall be tested in accordance with

IS: 456 (Code of practice for plain and reinforced concrete).

The detensioning shall be done by slowly releasing the wires, without imparting shock or sudden

load to the poles. The rate of detensioning may be controlled by any suitable means either

mechanical (screw type) or hydraulic.

The poles shall not be detensioned or released by cutting the pre-stressing wires using flames or bar

croppers while the wires are still under tension.

2.6.8. Separate eye-hooks or holes shall be provided for handling the transport, one each at a distance

of 0.15 times the overall length, from either end of the pole. Eye-hooks, if provided, should be

properly anchored and should be on the face that has the shorter dimension of the cross-section.

Holes, if provided for lifting purposes, should be perpendicular to the broad face of the pole.

Stacking should be done in such a manner that the broad side of the pole is vertical. Each tier in

the stack should be supported on timber sleeper located as 0.15 times the overall length,

measured from the end. The timber supported in the stack should be aligned in a vertical line.

Poles should be transported with their broad faces placed vertically and, in such a manner that

the shocks are avoided. Supports should be so arranged that they are located approximately at a

distance equal to 0.15 times the overall length from the ends. The erection of the pole should be

carried out in such a way that the erection loads are applied so as to cause moment with respect

to the major axis, i.e., the rope used for hoisting the pole should be parallel to the broader face

of the pole.

2.6.9. Earthing

2.6.9.1 Earthing shall be provided by having length of 8 SWG GI wire embedded in concrete during

manufacture and the ends of the wires left projecting from the pole to a length of 100 mm at 250

mm from top and 150 mm below ground level.

2.6.9.2 Earth wire shall not be allowed to come in contract with the pre-stressing wires.

2.7 Tests



2.7.1 Transverse Strength Test

2.7.1.1 Poles made from ordinary Portland cement shall be tested only on the completion of 28 days

and poles made from rapid hardening cement only on the completion of 14 days, after the day of

manufacture.

2.7.1.2 The poles may be tested in either horizontal or vertical position. If tested in horizontal position,

provisions shall be made to compensate for the overhanging weight of the pole, for this

purposed, the overhanging portion of the pole may be supported on a movable trolley or similar

device.

2.7.1.3 The pole shall be rigidly supported at the butt end for a distance equal to the agreed depth of

planting. 2.7.1.4 Load shall be applied at a point 600 mm from the top of the pole and shall be steadily and gradually

increased to the design value of the transverse load at first crack. The deflection at this load shall be

measured.

A pre-stressed concrete pole shall be deemed not to have passed the test if visible cracks appear at a

stage prior to the application of the design transverse load for the first crack.

The load then be reduced to zero and increased gradually to a load equal to the first crack load plus

10% of the minimum ultimate transverse load, and held up for 2 minutes. This procedure shall be

repeated until the load reaches the value of 80 per cent of the minimum ultimate transverse load and

thereafter increased by 5 per cent of the minimum ultimate transverse load until failure occurs. Each

time the load is applied, it shall be held for 2 minutes. The load applied to pre-stressed concrete pole

at the point of failure shall be measured to the nearest five Kilograms.

The pole shall be deemed not to have passed the test if the observed ultimate transverse load is less

than the design ultimate transverse load.

2.7.1.5 Measurement of Cover

After completion of the transverse strength test, the sample pole shall be taken and checked for

cover. The cover of the pole shall be measured at 3 points, one within 1.8 meter from the butt end of

the pole. the ·second within 0.6 meters from the top and the third at an intermediate point and the

mean value compared with the specified value.

The mean value of the measured cover should not differ by more than (±) 1 mrn from the specified

cover. The individual values should ;Jot jiffer by more than (±) 3 mm from the specified value.

If these requirements are not met, the workmanship with reference to aligning of the end plates and

pre-stressing wires and assembly of moulds should be improved and inspection at pre-production

stage tightened suitably.

3.0 MARKING

The pole shall be clearly and indelibly marked with the following particulars either during or after

manufacture but before testing at a position so as to be easily read after erection in position.

a) Month and year of manufacture

b)Transverse strength of pole in Kg

4.0 INSPECTION



Inspection may be carried out by the purchaser or third party nominee at any stage of

manufacture. The supplier shall grant free access to the purchaser's representative or third party

nominee at a reasonable time when the work is in progress. Inspection and acceptance of any

equipment under this specification by the purchaser shall not relieve the supplier of his

obligation of furnishing equipment in accordance with the specification and shall not prevent

subsequent rejection if the equipment is found defective.



ECONOMICAL DESIGN FOR VIRENDEEL TYPE PRESTRESSED CONCRETE POLES

Factor of safety = 2.5 Diameter of Prestressing Wires = 4 mm

Cost Ratio = 11 With a Minimum Ultimate Tensile Strength of 175 Kg/mm Sq.

Concrete Grade = M-420

Length

of Pole

Load Bottom

Depth

Breadth Top

Depth

No. of

Tensioned

Wires per

Pole

No. of

Untensioned

Wires per

Pole

Length of

each

Untensioned

Wire

Concrete

Quantity

Concrete

Quantity

Steel

Quantity

(L) (P) (dt) (B) (lc) Cubic M Kg/Pole

M Kg Cm

I 2 3 4 5 6 7 8 9 10

7.5 140 25.5 10.5 8.5 8 2 4.55 0.115 6.81

200 27.5 14.5 8.5 12 2 3.75 0.134 9.61

8.0 140 27.5 10.5 9 8 2 4.7 0.137 7.24

200 29 14.5 9.0 12 2 3.95 0.157 10.25

9.0 140 27 10.5 10 10 2 4.5 0.169 9.76

200 31.5 11.5 10.5 12 2 4.45 0.203 11.54

Note: 1. Untensioned wires of the given length should be placed at the bottom of the pole

Cost of one MT of pre-stressing steel

2.Cost ration =

Cost of one cubic m of concrete



ECONOMICAL DESIGN FOR VIRENDEEL TYPE PRESTRESSED CONCRETE POLES

Factor of safety = 2.0 Nos. of Windows = 4

Cost Ratio = 11


Sl.No

Overall

Length

of Pole

Bottom

Depth

Top

Depth Breadth

Thicknes

s

Thickn

ess

Diamete

r of Pre-

stressing

wires

No. of

Tensione

d Wires

per Pole

No. of

Untensio

ned

Wires

per Pole

Length

of Each

Untensi

oned

Wires

Concrete

Quantity

Steel

Quantity

Weight

Kg/Pole

M Kg Cm Cm Cm Cm M M/Pole Kg/Pole Kg/Pole

1 2 3 4 5 6 7 8 9 10 11 12 13 14

1 9.75 300 39.5 11.0 12.5 7.0 5 8 2 5.62 0.205 12.82 490

2 9.75 400 48.0 11.0 14.5 7.0 5 ,8 2 6.45 0.255 13.06 610

3 9.5 200 37.5 10.5 12.5 6.5 5 8 2 6.53 0.208 8.78 500

4 9.5 300 41.0 11.0 12.5 7.0 5 8 2 6.14 0.225 13.60 540

5 9.5 400 50.0 11.0 15.0 7.0 5 8 2 6.96 0.291 13.85 700



ECONOMICAL DESIGN FOR SOLID RECTEANGULAR TYPE PRESTRESSED CONCRETE POLES

Factor of safety = 2.0

Cost Ratio = 11


Sl.No

Overall

Length

of Pole

Bottom

Depth

Top

Depth Breadth Thickness

Diameter of

Pre-stressing

wires

No. of

Tensione

d Wires

per Pole

Concrete

Quantity

Steel

Quantity

Weight

Kg/Pole

M Kg Cm Cm Cm M/Pole Kg/Pole Kg/Pole

1 2 3 4 5 6 7 8 9 10 11

1 9.0 200 31.5 14.5 8.5 4 12 0.176 10.65 425

2 9.0 300 35.5 18.5 10.0 4 16 0.243 14.20 585

3 9.0 400 39.5 22.5 10.0 4 20 0.279 17.76 670

4 9.5 200 31.5 14.5 10.0 4 12 0.218 11.25 525

5 9.5 300 36.5 18.5 10.0 4 16 0.261 14.99 625

6 9.5 400 40.5 22.5 10.0 4 20 0.299 18.74 720



3.0 TECHNICAL SPECIFICATION FOR 33 KV & 11 KV PIN

INSULATORS

1.0 SCOPE

This specification covers the design, manufacture, testing at manufacturer's works,

transport to site, insurance, storage, erection and commissioning of insulators required

for 33 kV & 11 kV lines.

1.0 STANDARD

The pin insulators shall comply with the Indian Standard specification IS : 731/1971 as amended

from time to time having mechanical failing load of 10 K.N for 33 kV insulator and 5 kN for 11

kV insulator.

Insulators conforming to any other internationally accreted standards which ensure equal or

higher quality than the standard mentioned would also be acceptable.

Where the material is offered according to the inter-national standard a copy of the specification

shall be attached with the tender.

2.1 General requirement: The porcelain should be sound, free from defects, thoroughly vitrified and

smoothly glazed.

2.2 Unless otherwise specified, the glaze shall be brown colour. The glaze shall cover all the

porcelain parts of the insulators except those areas which serve as support during firing or are left

unglazed for purpose of assembly.

2.3 The design of the insulator shall be such that stress due to expansion and contraction in any part of

the insulator shall not lead to deterioration. The porcelain shall not engage directly with hard

metal.

2.4 Cement used in the construction of insulator shall not cause fracture by expansion or loosening by

contraction and proper care shall be taken to locate the individual parts correctly during

cementing. The cement shall not give rise to chemical reaction with metal fitting and its thickness

shall be as uniform as possible.

2.5 The insulator shall be multi-petty-coat type.

2.3 CLIMATIC CONDTIONS

a) Maximum temperature of air in shade 40° C

b) Minimum temperature of air in shade 2° C

c) Maximum humidity 93%

d) Average annual rainfall 2280 mm

e) Average number of rainy days per annum 150

f) Basic wind pressure 150 Kg/M2

g) Isoceraumic level 60

h) Altitude above MSL 100 M to 1000 M

2.0 BASIC INSULATION LEVEL



The test voltage (minimum requirement) of the insulator shall be as follows:

33 KV 11 KV

1. Highest system voltage (rms) 36 KV 12 KV

2. Wet one minute power frequency test(rms) 76 KV 35 KV

3. Power frequency puncture withstand (rms) 180 KV 105 KV

4. Impulse voltage withstand test(Peak) 170 KV 75 KV

5. Dry one minute power frequency test (rms) 95 KV -

6. Power frequency flush and voltage

a) Dry 95 KV -

b) Wet 80 KV -

3.0 MECHANICAL LEADS

The minimum failing load of the insulators shall be 10 KN for 33 kV & 5 kN for 11

kV and the load shall be applied in transverse direction.

4.0 CREEPAGE DISTANCE

The minimum total creepage distance for insulators shall be 580 mm for 33 kV and

320 mm for 11 kV insulators.

5.0 MARKING

Each insulator shall be legibly and indelibly marked to show the following:

1.0 Name or trade mark of the manufacturer

2.0 Month and year of manufacture

3.0 Minimum failing load in KN

4.0 Country of manufacture

5.0 ISI certificate mark, if any

6.0 Name of the Project under .

The marking on porcelain shall be printed and shall be applied before firing.

6.0 Type Tests

\

The following type tests shall be conducted on 'a suitable number of individual

insulator unit, components, materials or complete strings:

a) Verification of dimensions

b) Thermal mechanical performance test

c) Power frequency voltage withstand and flashover test (i) dry (ii) wet

d) Impulse voltage withstand and flashover test (dry)

e) Visible discharge test (dry)

f) RIV test (dry)

g) Mechanical failing Load Test (for pin insulator only)

h) 24 hrs. mechanical strength test (for strain / string insulator only)

7.4 Acceptance Test

i. Visual examination

ii. Verification of dimension

iii. Temperature cycle test



iv. Galvanizing test

v. Mechanical performance test

vi. Test on locking device for ball and socket coupling

vii. Eccentricity test

viii. Metallurgical test

a) Grain test

b) Inclusion rating For metal fittings only (in black

condition)

c) Chemical analysis

d) Microstructure.

ix. Mechanical failing load test (for Pin Insulator only)

x. Electro-mechanical strength test (for strain insulator only)

xi. Porosity test

xii. Puncture test(for Strain Insulator only)

7.5 ROUTINE TEST

a) Visual Inspection

b) Mechanical routine test (for Strain Insulator only)

c) Electrical routine test (for Strain Insulator only)

7.6 Tests During Manufacture

On all components as applicable

a) Chemical analysis of zinc used for galvanizing

b) Chemical analysis, mechanical, metallographic test and magnetic particle inspection

for malleable castings.

c) Chemical analysis hardness tests and magnetic particle inspection for forgings

d) Hydraulic Internal Pressure tests On disc insulator shells

7.7 SCHEDULE OF TESTING AND ADDITIONAL TESTS 7.7.1 The Bidder has to indicate the schedule of following activities in

their bids: a) Submission of drawings for approval

b) Submission of Quality Assurance Programme for approval

c) Offering of material for sample selection for type tests

d) Type testing.

7.7.2 Additional Tests

7.7.2.1 The Owner reserves the right of having at his own expense any other test(s) or reasonable

nature carried out at Contractor's premises, at site, or in any other place in addition to the

aforesaid type, acceptance and routine tests to satisfy himself that the material comply with

the Specifications.

7.7.2.2 The Owner also reserves the right to conduct all the tests mentioned in this specification at

his own expense on the samples drawn from the site at Contractor's premises or at any other

test center. In case of evidence of noncompliance, it shall be bindirg on the part of the

Contractor to prove the compliance of the items to, the technical specifications by repeat tests

or correction of deficiencies, or replacement of defective items, all without any extra cost to

the Owner.

7.7.3 Co-ordination for Testing



The Contractor shall have to co-ordinate testing of insulators with hardware fittings to be

supplied by other Contractor and shall have to also guarantee overall satisfactory

performance of the insulators with the hardware fitting.

7.7.4 Test Reports

7.7.4.1 Copies of type test reports shall be furnished in at least six (6) copies along with one

original. One copy shall be returned duly certified by the Owner only after which the

commercial production of the concerned materials shall start.

7.7.4.2 Copies of acceptance test reports shall be furnished in at least six (6) copies. One copy

shall be returned duly certified by the Owner, only after which the material shall be

despatch.

7.7.4.3 Record of routine test reports shall be maintained by the Contractor at his works for

periodic inspection by the Owner's representative.

7.7.4.4 Test certificates of test during manufacture shall be maintained by the Contractor. These

shall be produced for verification as and when desired by the Owner.

7.7.5 Inspection

7.7.5.1 The Owner's representative or third party nominee 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 Contractor's and ;1ub-Contractor's works, raw materials,

manufacture of th::; material and for conducting necessary test as detailed herein.

7.7.5.2 The material for final inspection shall be offered by the Contractor only under packed

condition as detailed in the specification. The Owner shall select samples at random

from the packed lot for carrying out acceptance tests. Insulators shall normally be

offered for inspection in lots not exceeding 5000 nos. the lot should be homogeneous

and should contain insulators manufactured in the span of not more than 3-4

consecutive weeks.

7.7.5.3 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.

7.7.5.4 No material shall be dispatched from its point of manufacture before it has been

satisfactorily inspected and tested unless the inspection is waived off by the Owner in

writing. In the latter case also the material shall be dispatched only after satisfactory

testing for all tests specified herein have been completed.

7.7.5.5 The acceptance of any quantity of material shall be no way relieve the Contractor of his



7.0 BID DRAWING

8.0 The Bidder shall furnish full description and illustration of the material offered.

8.1 The Bidder shall furnish along with the bid the outline drawing (6 copies) of each

insulator unit including a cross sectional view of the insulator shell. The drawing shall

include but not limited to the following information:



a) Dimensions with manufacturing tolerances

b) Minimum creepage distance with positive tolerance

c) Protected creepage distance

d) Eccentricity of the disc

i. Axial run out

ii. Radial run out

e) Unit mechanical and electrical characteristics

f) Size and weight of Pin Ball Shank / ball and socket parts

g) Weight of unit insulator disc

h) Materials

i) Identification mark

j) Manufacturer's catalogue number

8.2 After placement of award, the Contractor shall submit fully dimensioned insulator

drawings containing all the details, in four (4) 'copies to Owner for approval. After

getting approval from Owner and successful completion of all the type tests, the

Contractor shall submit 20 more copies of the same drawing to the Owner for further

distribution and field use at Owner's end.

9.0 Guaranteed Technical Particulars

The guaranteed technical particulars in respect of the Pin Insulators offered shall be

submitted along with the tender.

4.0 TECHNICAL SPECIFICATION FOR 11 KV DISC. INSULATORS (T&C) 45 KN

1.0 SCOPE

This specification cover the design, manufactures, testing at

manufacturer's works, transport to site, insurance, storage, erection and

commissioning of strain insulators required for 11 KV line.

2.0 STANDARD

Strain insulators Tongue and Clevis type suitable for 11 KV lines shall be

conforming to IS : 731/1971 with its latest amendments and revision and

having mechanical failing load of 45 K.N.

Insulators conforming to any other internationally accepted standards which

ensure equal or higher quality than the standard mentioned would also be

acceptable.

Where the material is offered according to the inter-national accepted

standard a copy of the specification shall be attached with the tender.

2.1 GENERAL REQUIREMENT:

The porcelain should be sound, free from defects, thoroughly verified and

smoothly glazed. Unless otherwise specified, the glaze shall be brown colour.

The glaze shall cover all the porcelain parts of the insulators except these areas



which serve as support during firing or are left unglazed for purpose of .

assembly.

2.2 The design of the insulator shall be such that stress due to expansion and

contraction in any part of the insulator shall not lead to deterioration. The

porcelain shall not engage directly with hard metal.

2.3 The cement use in the construction of insulator shall not cause fracture by

expansion or loosening by contraction and proper care shall be taken to locate

the individual parts correctly during commencing. The cement shall not give

rise to chemical reaction with metal fitting and its thickness shall be as

uniform as possible.

2.4 The insulator shall be multi-petty-coat type.

2.5 The insulator shall be in one piece.

2.6 CLIMATIC CONDITIONS.:

(i) Maximum ambient temperature in shade : 40°C

(ii) Minimum daily average ambient air temperature : 35°C

(iii) Maximum yearly average ambient air temperature : 30°C

(iv) Maximum ambient temperature : 2°C

(v) Maximum relative humidity : 93%

(vi) Average number of thunder storms days per annum : 45 days

(vii) Average number of rainy days per annum : 150 days

(viii) Average annual rainfall : 2280 mm

(ix) Number of months of tropical monsoon conditions : 5 months

(x) Maximum wind pressure : 150 Kg/sq.m

(xi) Altitude not exceeding : 1000 M

4.0 BASIC INSULATION LEVEL

The test voltage (minimum requirement) of the insulator shall be as follows:

a) Highest system voltage : 12 KV(rms)

b) Wet one minute power frequency test : 35 KV(rms)

c) Power frequency puncture withstand test : 1.3 times the actual dry flashover

voltage

d) Impulse voltage withstand test : 75 KV (rms)

5.0 MECHANICAL LOADS

The minimum failing load of the insulators shall be 45 KN and the load shall be applied

transverse.



6.0 CREEP AGE DISTANCE:

The minimum total creepage distance for insulators shall be suitable for heavily polluted

and humidity atmospheric conditions and shall be 320 mm.

7.0 MARKING

Each insulator shall be legibly and indelibly marked to show the following:

a) Name or trade mark of the manufacturer

b) Month and year of manufacture

c) Minimum failing load in KN

d) Country of manufacture

e) ISI certificate mark and name of the project under "CM."

The marking on porcelain shall be printed and shall be applied before suitably.

8.0 TEST

8.1 Type test

The following type tests shall be conducted on a suitable number of individual insulator

unit, components, materials or complete strings:

1.0 Verification of dimensions

2.0 Thermal mechanical performance test

3.0 Power frequency voltage withstand and flashover test (i) dry (ii) wet

4.0 Impulse voltage withstand and flashover test (dry)

5.0 Visible discharge test (dry)

6.0 RIV test (dry)

7.0 Mechanical failing Load Test (for pin insulator only)

8.0 24 hrs. mechanical strength test (for strain I string insulator only)

8.2 Acceptance Tests

a) Visual examination

b) Verification of dimensions

c) Temperature cycle test

d) Galvanizing test

e) Mechanical performance test

f) Test on locking device for ball and socket coupling

g) Eccentricity test

h) Metallurgical test

(i) Grain size

(ii) Inclusion rating

(iii) Chemical analysis

(iv) Microstructure



i) Mechanical failing load test (for Pjn Insulator only)

j) Electro-mechanical strength test (for Strain insulator only)

k) Porosity test

l) Puncture test (for strain Insulator only)

8.3 Routine Tests

a. Visual Inspection

b. Mechanical routine test for Strain Insulator only)

c. Electrical routine test (for Strain Insulator only)




b) Chemical analysis, mechanical, metallographic test and magnetic particle inspection for

malleable castings.


d) Hydraulic Internal Pressure tests On disc insulator shells

8.0 SCHEDULE OF TESTING AND ADDITIONAL TESTS

8.1 The Bidder has to indicate the schedule of following activities in their bids:

a. Submission of drawings for approval

b. Submission of Quality Assurance Programme for approval

c. Offering of material for sample selection for type tests

d. Type testing.

8.2 Additional Tests

8.2.1 The Owner reserves the right of having at his own expense any other test(s) or

reasonable nature carried out at Contractor's premises, at site, or in any other place in

addition to the aforesaid type, acceptance and routine tests to satisfy himself that the

material comply with the Specifications.

8.2.2 The Owner also reserves the right to conduct all the tests mentioned in this specification at his

own expense on the samples drawn from the site at Contractor's premises or at any other test

center. In case of evidence of noncompliance, it shall be binding on the part of the Contractor

to prove the compliance of the items to the technical specifications by repeat tests or

correction of deficiencies, or replacement of defective items, all without any extra cost to the

Owner.

8.3 Co-ordination for Testing






8.4 Test Reports

8.4.1 Copies of type test reports shall be furnished in at least six (6)' copies along with one original.

One copy shall be returned duly certified by the Owner only after which the commercial

production of the concerned materials shall start.

8.4.2 Copies of acceptance test reports shall be furnished in at least six (6) copies. One copy shall

be returned duly certified by the Owner, only after which the material shall be despatch.

8.4.3 Record of routine test reports shall be maintained by the Contractor at his works for periodic

inspection by the Owner's representative.

8.4.4 Test certificates of test during manufacture shall be maintained by the Contractor.These shall

be produced for verification as and 'When desired by the Owner.

9.0 INSPECTION

9.1 The Owner's representative or third party nominee 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


Contractor's and sub Contractor's works, raw materials, manufacture of the material and for


9.2 The material for final inspection shall be offered by the Contractor only under packed

condition as detailed in the specification. The Owner shall select samples at random from

the packed lot for carrying out acceptance tests. Insulators shall normally be offered for

inspection in lots not exceeding 5000 nos. the lot should be homogeneous and should

contain insulators manufactured in the span of not more than 3-4 consecutive weeks.

9.3 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.

9.4 No material shall be dispatched from. its point of manufacture before it has been

satisfactorily inspected and tested unless the inspection is waived off by the Owner in

writing. In the latter case also the material shall be dispatched only after satisfactory

testing for all tests specified herein have been completed.




10.0 DRAWING





a. Dimensions with manufacturing tolerances

b. Minimum creepage distance with positive tolerance

c. Protected creepage distance

d. Eccentricity of the disc

(i) Axial run out

(ii) Radial run out

e. Unit mechanical and electrical characteristics

f. Size and weight of Pin Ball Shank I ball and socket parts



g. Weight of unit insulator disc

h. Materials

i. Identification mark

j. Manufacturer's catalogue number

9.3 After placement of award, the Contractor shall submit fully dimensioned insulator

drawings containing all the details, in four (4) copies to Owner for approval. After getting

approval from Owner and successful completion of all the type tests, the Contractor shall

submit 20 more copies of the same drawing to the Owner for further distribution and field

use at Owner's end.



5.0 TECHNICAL SPECIFICATION OF L T & HT GUY INSULATOR

1.0 Scope

This specification covers design, manufacture, testing, transport to site, insurance,

storage, erection and commissioning of the strain type porcelain Guy Insulator

used in distribution overhead power lines.

1.0 Standard

This insulators shall comply with Indian Standard specification IS: 5500/1969 and as

amended from time to time except where they conflict with the requirements in this

specification.

Offers conforming to any other internationally accepted standard which ensure equal or higher

quality than the standard mentioned will be acceptable.

2.0 Service Conditions

The service conditions at which Insulator has to be designed is as follows:

i) Maximum ambient temperature in shade : 40°C

ii) Minimum daily average ambient air temperature : 35°C

iii) Maximum yearly average ambient air temperature : 30°C

iv) Maximum ambient temperature : 2°C

v) Maximum relative humidity : 93%

vi) Average number of thunder storms days per annum : 45 days

vii) Average number of rainy days per annum : 150 days

viii) Average annual rainfall : 2280 mm

ix) Number of months of tropical monsoon conditions : 5 months

x) Maximum wind pressure : 150 Kg/sq.m

xi) Altitude not exceeding : 1000 M

3.0 General Requirements

This porcelain shall be sound, free from defects, thoroughly vitrified and smooth glazed.

The design of the insulator shall be such that stresses to expansion and contraction at any

part of the insulator shall not load to its deterioration.

The glaze, unless otherwise specified, shall be brown in colour. The glaze shall cover the

entire porcelain surface parts except those areas that serves as supports during firing or area

otherwise required to be left unglazed.

4.0 Insulator Characteristics

The Guy Strain Insulators shall have the electrical and mechanical characteristics as shown



below:

L.T. Strain Type Porcelain Guy Insulator 1) Length

2) Diameter

3) Cable hole dia'

4) Minimum failing load

5) Creepage distance

6) Dry one minute power frequency withstand voltage

7) Wet one minute power frequency withstand voltage

The dimensions are shown in Figure

H.T. Strain Type Porcelain Guy Insulator (11 KV)

1) Length 140 mm

2) Diameter 85 mm

3) Cable hole dia 25 mm + 1.5

4) Minimum failing load 88 KN

5) Creepage distance 48 mm

6) Dry one minute power frequency withstand 27 KV (rms) voltage

7) Wet one minute power frequency withstand 13 KV (rms) voltage

All other dimensions are shown in the Figure

5.0 Test

All insulators shall comply the following test as per IS : 5300

A) Routine test:

The following shall be carried out as., routine test.

a) Visual Examination

Every insulators shall be visually examined. The insulators shall be free from physical

distortion of shape and defects, and thoroughly verified and smoothly glazed. They

should be free from cracks or any other defects likely to be prejudicial to the

satisfactory performance in service.

b) Type test:

The following shall constitute the type test and those shall be conducted in the order

given below:

i. Visual examination

ii. Verification of dimensions

iii. Temperature cycle test

iv. Dry one minute power frequency voltage withstand test

v. Wet one minute power frequency voltage withstand test

vi. Mechanical strength test

vii. Porosity test.



The number of samples for type test are to be agreed to between the purchaser and the

supplier.

c) Acceptance Test (to be conducted in the following order)

i. Verification of Dimensions

ii. Temperature cycle test

iii. Mechanical strength test

iv. Porosity test

The number of samples for acceptance test shall be in accordance to IS: 5300.

d) Type test certificate fro National Test House/ Govt. recognized institutions/ Govt.

recognized public Testing Laboratories are also to be submitted along with the

offer, failing which the offer is liable for rejection.

6.0 Marking

Each insulator shall be legibly and indelibly marked to shown the following:

a. Name of trade mark of the manufacturer

b. Year of manufacture and name of project .

Marking on porcelain shall be printed and shall be applied before firing. Insulators may

also be marked with the ISI certification mark.

7.0 Inspection

All tests and inspections shall be carried out at the place of manufacturer unless otherwise

agreed by the purchaser and the manufacturer at the time of purchase. The manufacturer

shall afford the inspector representing the purchaser or the third party nominee, all

reasonable facilities, without charge, to satisfy that materials are being furnished in

accordance with the specification. The purchaser reserves the right to have the test carried

out at his own cost by an independent agency whenever there is dispute regarding the

quality of materials supplied.

8.0 Drawing

Drawing specifically showing all dimensions is to be submitted along with technical bid.



6.0 TECHNICAL SPECIFICATION FOR L T SHACKLE INSULATOR

1.0 Scope

This specification covers design, manufacture, testing at works, transport to site,

insurance, storage, erection and commissioning of the porcelain shackle insulators for use

on 415/240 volts over-head power lines.

4.0 Standard

The insulators shall comply with the Indian Standard specification IS:14451977 and as

amended from time to time, except for any specific-requirements stated in this

specification.

Offers, conforming to other internationally accepted standard which ensure equal or

higher quality than the standard mentioned will be acceptable.

3.0 Atmospheric Conditions

The climatic conditions under which the insulators are required to operate is given as

below:

(i) Maximum ambient temperature in shade : 40°C

(ii) Minimum daily average ambient air temperature : 35°C

(iii) Maximum yearly average ambient air temperature : 30°C

(iv) Maximum ambient temperature : 2°C

(v) Maximum relative humidity : 93%

(vi) Average number of thunder storms days per annum : 45 days

(vii) Average number of rainy days per annum : 150 days

(viii) Average annual rainfall : 2280 mm

(ix) Number of months of tropical monsoon conditions : 5 months

(x) Maximum wind pressure : 150 Kg/sq.m

(xi) Altitude not exceeding : 1000 M

Reference atmospheric conditions at which insulator characteristics shall be expressed for

the purpose of comparison shall be given as follows:

a. Ambient temperature : 20°C

b. Barometric pressure : 1013 mili bars

c. Absolute humidity : 11 gm to water per cubic mtr.



Test for the purpose of this standard shall preferably be carried out under

conditions of temperature and humidity specified in IS: 196-1966 (That is a

temperature of 27 C.±. 2°C and relative humidity of 65 .±2 percent) and at the

prevailing atmospheric pressure. When this is not possible test may be carried

out under conditions naturally obtaining at the time of test. The Barometric

pressure, Air temperature and humidity shall be recorded for the purpose of

corrections.

4.0 General Requirements

The porcelain shall be found free from defects, thoroughly verified and

smoothly glazed.

The glaze unless otherwise specified shall' be brown in colour. Except for the --'/-

screw threads and the parts on which the porcelain is supported during firing,

which may be left unglazed, all other surface of the insulator shall be effectively

glazed.

The design of the insulator shall be such that stress due to expansion and

contraction in any parts of the insulator shall not lead to it deterioration.

The insulator shall be in one piece and shall have dimensions as shown below

and as per drawing.

a. Outer Diameter of porcelain disc Upper : 115mm

b. Outer diameter of porcelain disc Bottom : 100mm

c. Upper glazed porcelain dia : 50mm

d. Bottom unglazed porcelain dia : 55mm

e. Hollow diameter : 20mm

f. Height of the insulator : 100mm

g. Conductor supporting grove : 13mm. Radius &

diameter 65mm

h. Top curvature of upper porcelain disc : 22 mm radius

5.0 Type Of Insulators

Shackle insulator is an insulator consisting of one porcelain part and intended to be

mounted vertically or horizontally between and in contact with two ends of a 'U' straps or

a pair of straps with its axis vertical and intended to secure a line conductor in tension.

6.0 Insulator Characteristics

The insulators shall have the electrical and mechanical characteristics as shown below:

a. Dry power frequency withstand test voltage 23 KV(rms)

b. Wet power frequency withstand test voltage 10 KV(rms)

c. Power frequency puncture withstand test 1.3 X the actual dry flashover voltage



d. Minimum failing load 16 KN

7.0 Tests

7.1 Type test

The following type tests shall be conducted on a suitable number of individual insulator

unit, components, materials or complete strings:

a) Verification of dimensions

b) Thermal mechanical performance test

c) Power frequency voltage withstand and flashover test (i) dry (ii) wet

d) Impulse voltage withstand and flashover test (dry)

e) Visible discharge test (dry)

f) RIV test (dry)

g) Mechanical failing Load Test (for pin insulator only)

h) 24 hrs. mechanical strength test (for strain / string insulator only)

7.2 Acceptance Tests

a) Visual examination

b) Verification of dimensions

c) Temperature cycle' test

d) Galvanizing test

e) Mechanical performance test

f) Test on locking device for ball and socket coupling

g) Eccentricity test

Metallurgical test

a. Grain size

b. Inclusion rating – For metal fittings only (in black condition)

c. Chemical analysis

d. microstructure

Mechanical failing load test (for Pin Insulator only)

Electro-mechanical strength test (for Strain Insulator only)

Porosity test

Puncture test (for Strain Insulator only)

7.3 Routine Tests

a) Visual Inspection

b) Mechanical routine test for Strain Insulator only)

c) Electrical routine test (for Strain Insulator only)






b) Chemical analysis, mechanical, metallographic test and magnetic particle

inspection for malleable castings.


d) Hydraulic Internal Pressure tests on disc insulator shells

7.5 Schedule Of Testing And Additional Tests

7.5.1 The Bidder has to indicate the schedule of following activities in their bids:

a) Submission of drawings for approval

b) Submission of Quality Assurance Programme for approval

c) Offering of material for sample selection for type tests

d) Type testing.

7.5.2 Additional Tests

The Owner reserves the right of having at his own expense any other test(s) or reasonable

nature carried out at Contractor's premises, at site, or in any other place in addition to the

aforesaid type, acceptance and routine tests to satisfy himself that the material comply

with the Specifications.

7.5.2.1 The Owner also reserves the right to conduct all the tests mentioned in this

specification at his own expense on the samples drawn from the site at Contractor's

premises or at any other test center. In case of evidence of noncompliance, it shall be

binding on the part of the Contractor to prove the compliance of the items to the technical

specifications by repeat tests or correction of deficiencies, or replacement of defective

items, all without any extra cost to the Owner.

7.5.3 Co-ordination for Testing




7.5.4 Test Reports

7.5.4.1 Copies of type test reports shall be furnished in at least six (6) copies along with one

original. One copy shall be returned duly certified by the Owner only after which the

commercial production of the concerned materials shall start.

7.5.4.2 Copies of acceptance test reports shall be furnished in at least six (6) copies. One

copy shall be returned duly certified by the Owner, only after which the material shall

be despatch.

7.5.4.3 Record of routine test reports shall be maintained by the Contractor at his works for

periodic inspection by the Owner's representative.

7.5.4.4 Test certificates of test during manufacture shall be maintained by the Contractor.

These shall be produced for verification as and when desired by the Owner.



8.0 Inspection 8.1 The Owner's representative or third party nominee 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


Contractor's and subContractor's works, raw materials, manufacture of the material and for


8.2 The material for final inspection shall be offered by the Contractor only under packed condition as

detailed in the specification. The Owner shall select samples at random from the packed lot for

carrying out acceptance tests. Insulators shall normally be offered for inspection in lots not

exceeding 5000 nos. the lot should 'be homogeneous and should contain insulators manufactured

in the span of not more than 3-4 consecutive weeks.

8.3 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.

8.4 No material shall be dispatched from its point of manufacture before it has been satisfactorily

inspected and tested unless the inspection is waived off by the Owner in writing. In the latter case

also the material shall be dispatched only after satisfactory testing for all tests specified herein

have been completed.




9.0 Marking

Each insulator shall be legibly and indelibly marked to show the following a. Name or trade-mark of the manufacturer

b. Year of manufacture

c. ISI marking.

Marking on porcelain shall be printed and shall be applied before fixing.

10.0 Drawing





a. Dimensions with manufacturing tolerances

b. Minimum creepage distance with positive tolerance

c. Protected creepage distance

d. Eccentricity of the disc i) Axial run out

ii) Radial run out

e. Unit mechanical and electrical characteristics

f. Size and weight of Pin Ball Shank / ball and socket parts

g. Weight of unit insulator disc

h. Materials

i. Identification mark

j. Manufacturer's catalogue number



7.0 TECHNICAL SPECIFICATION FOR STAY SET (HT & LT)

1.0 Scope:

This specification covers the design, manufacture testing at manufacturer's works,

transport to site, insurance, storage, erection and commissioning of the Stay Sets (L

T/HT) required from the distribution lines at designated locations.

2.0 Standard: All the materials of stay sets shall comply in all respects with the

requirements of the latest edition of the relevant Indian or British Standard

specification except in so far as they are modified this specification.

3.0 Design Consideration: Stay Rods shall be Galvanised and shall be of circular Cross-section with

bow, thimble, nuts and bolts. The Rods shall be threaded at one end up to a minimum of 30 cm

length and shall be complete with Galvanised M.S. Anchor Plates with all necessary accessories.

All parts shall be heavily galvanised.

4.0 Climatic Conditions

(ii) Maximum ambient temperature in shade : 40°C

(iii) Minimum daily average ambient air temperature : 35°C

(iv) Maximum yearly average ambient air temperature : 30°C

(v) Maximum ambient temperature : 2°C

(vi) Maximum relative humidity : 93%

(vii) Average number of thunder storms days per annum : 45 days

(viii) Average number of rainy days per annum : 150 days

(ix) Average annual rainfall : 2280 mm

(x) Number of months of tropical monsoon conditions : 5 months

(xi) Maximum wind pressure : 150 Kg/sq.m

(xii) Altitude not exceeding : 1000 M

5.0 Testing: Type and Routine Tests should be carried on different components of each stay sets as

per relevant Indian Standard specification and certified copies of the above should be submitted

along with the tender.

6.0 Schedule Requirement·: Stay sets complete with Thimble bow stay

Rod/Anchor plate with nuts etc. and made of Rolled mild Steel Rod and plates as per detailed

given below:

A) Anchor Plate:

II) Thickness not below 5 mm.

III) Size not below 230 mmX230 mm with smooth edges (for L T)

IV) Size not below 300 mmX300 mm with smooth edges (for HT)

V) Well galvanised



VI) Materials M.S. Rolled plate

VII) About 20 mm square hole at centre for locking the plate with the Anchor Rod

(for HT) & 19 mm (for L T)

B) Anchor Rod:

2.1 Length 1800 mm or above

2.2 Threaded length 30 cm or above

2.3 Diameter 18 mm or above (for HT)

2.4 Anchor plate and head: square size 30mm X 30mm with thickness 25 mm

having matching square size shank for locking the Anchor plate.

2.5 One ratched lock nuts, grooves must match the grooves at bow flange

2.6 One check nut.

2.7 Materials H.S.

2.8 Component well galvanised with extra care for the threaded portion.

2.9 Both lock and check nuts should be matching to the Anchor Rod thread such

that punching of thread after assembly at site safeguards them against removal.

C) Thimble: The match bow diameter and bend should be well galvanised.

D) Bow: Rod diameter 12mm/16mm or above overall length 35cm/40cm or above. Flange

with well formed locking grooves matching the locking nut, bow ends will be riveted

securely with the flange. All items to be galvanised.

7.0 Inspection: All tests and inspections shall be carried out at the place of manufacturer

unless otherwise agreed by the purchaser and the manufacturers at the time of

purchase. A manufacturer shall afford the inspector representing the purchaser or

third party nominee, all reasonable facilities, without charge to satisfy that the

materials are being purchased as per specification. The purchaser reserves the right

to have the test carried out at his cost by an independent agency, whenever there is

dispute regarding the quality of the materials supplied.



8.0 TECHNICAL SPECIFICATION FOR G.I. STAY WIRE

1.0 Scope

The specification covers design, manufacturing and testing, transporting to site,

insurance, storage, erection and commissioning of G.I. Stay Wire 7/10SWG and 7/14SWG.

2.0 Materials.

The wire shall be manufactured from steel, made by any suitable process and shall not contain

sulphur and phosphorus exceeding 0.065 percent each.

The wires shall be coated with Zinc Grade Zn 98 of IS:209-1966

The general requirements for the supply of Galvanized stay strand shall be in accordance with

IS:1387-1967

3.0 Construction

3.1 Grades: The wire shall be of Grade-I and tensile strength range 45 up to and including

Kg/mm

3.2 The Galvanized stay strand shall be of 7/2 mm and 7/3.15 mm. the lay of the strands shall be

of the length of 7/2 mm and Tables-I of IS: 2141-1963. the wires shall be so stranded together

that when and evenly distributed pull is applied at the end of the completed strand each wire

will take equal share of the pull.

3.3 The length of the strand which may be supplied without joints in the individual wires

comprising it, depend on the length of wire which may be carried by the bobbin in a normal

stranding machine. The normal lengths of strand which shall be supplied without joints in the

individual wires, excluding welds made in the rod before drawing shall be as given below.

The lengths may be exceeded by agreement between the manufacturer and the purchaser.

Diameter of wire in strand Normal length without joints of weld

3.15 mm 1000 M

2.0 mm 3000 M

3.4 In cases where joints are permitted, they shall be made by welding of brazing joints in the

same wire shall be separated by a length of not less than that shown in 3.3 and joints in

different wires in a strand shall not be less than 20 M apart.

4.0 Freedom from Defects :

4.1 Each coil shall be warranted to contain no weld joint or splice other than in the rod before it is

drawn and those permitted in 3.4. The wire shall be circular and shall be free scale,

irregularities imperfections flaws splits and other defects. The Zinc coating shall be smooth,

even the bright.

5.0 Tests:

5.1 Chemical Analysis: Unless otherwise agreed to between the purchaser and the supplier, the

chemical analysis be carried out.



5.2 Tensile Test: The wire when tested in accordance with IS: 1521-1960, on gauge length of 100

mm shall have the minimum tensile strength specified in Tables 1 of IS : 2141/1968

according to the grade of the wire.

5.2.1 The tensile strength of the finalised strand shall be not less tI~an 93 percent of the aggregate

of the single wires.

5.3 Delivery test: The wire shall be subjected to the wrapping test in accordance with IS :

1755/1961. When wrapped eight times round its own diameter and on being subsequently

strengthened the wire shall not break or split.

5.3.1 Coating test: The uniformity of Zinc coating shall be tested by the method specified in IS :

2633/1964. The wire shall withstand the number or dips as specified in IS : 4826-1968.

6.0 Marking:

6.1 Each coil shall be provided with a label, fixed firmly on the inneJ part of the coil, bearing 'the

following information.

a. Manufacturer's name or trade mark

b. Lot number and coil number

c. A brief description and quality of the materials.

d. Weight and

e. Any other particulars specified by the purchaser

.

6.2 The label may also be marked with the ISI certification mark.

7.0 Inspection: The test should be carried out in presence of the inspecting officer deputed by

purchaser or third party nominee and the test should be in conformity with relevant IS



9.0 TECHNICAL SPECIFICATION FOR CROSS ARM

1.0 Scope

This covers manufacturing, transport to site, insurance, storage, erection and

commissioning of different types of Cross Arms suitable for 33 kV, 11 kV and L T lines.


The cross arms should be suitable for the climatic condition mentioned below:



c) Maximum temperature of air in Sun 40°C

d) Maximum Humidity 93%

e) Average number of thunderstorm days 45

f) Average numbers of dust storms per annum 10

g) Maximum rainfall/annum 3500 mm

h) Average rainfall 2280 mm

i) Wind Pressure 97.8 Kg/Sq.mm

j) Altitude above MSL 100 m to 1000 m

3.0 Standards

A. For 11 KV’ Cross-Arm

Cross Arms shall be made as per the drawings enclosed.

The Cross Arms shall be made out of 75 X 40 X 6 mm MS Channel and MS

Flat 50 X 6 mm

Cross Arms shall be hot dip galvanized generally conforming to IS-2633/1972

Cross Arms should not be welded/joined at any place except as specified.

The clamps for the Cross Arms shall be made of 50 X 6 MS Flat and shall be

hot dipped galvanized.

The clamps shall be designed to fit for the specified STP/PSC poles.

The rolling and cutting tolerance for steel products conforming to IS-226 shall

be those specified in IS-1852/1973 or latest version.

B. Cross Arm for 33 KV Lines.

The Cross Arms shall be made as per the drawings.

The Cross Arms shall be made out of 100 X 50x6mm MS Channel



and MS Flat 75 X 8 mm

The Cross Arm shall be hot dipped galvanized generally conforming

to the IS-2633/1972

The Clamps for the Cross Arms shall be made out of 75 X 8 mm MS

Flat and shall be hot dipped galvanized conforming to IS-2633/1972

The Clamps shall be designed to fit for STP/PSC Poles.

The rolling and cutting tolerance for steel products conforming to IS-

226 shall be those specified in IS-1852/1972 or latest version.

C. Horizontal Type Cross Arm for 11 KV / 33 KV

It shall comprise of 100 X 50x6 mm, 3.2 M long MS Channel for 33

KV and 2.2 mt. long for 11 KV to be provided on STP/ PSCC Poles




to the IS-2633/1972

The clamps for the Cross Arms shall be made of 50 X 6 MS Flat and

shall be hot dipped galvanized.

The Cross Arm should not have any welded joints.

D. Cross Arm for LT Lines

The Cross Arms shall comprise of 40 X 40 X 6 mm, 0.51 Mt. long MS

Channel to be provided on PSCC Poles.




to the IS-2633/1972


The clamps shall be manufactured with MS Flat 50 X 6 mm suitable

for PSCC poles and shall be hot dipped galvanized.

E. LT MS Angle Cross Arm size 75 X 40 X 6 X 1020 mm


All the Cross Arms shall be properly brushed to make free from rust

and then coated with two coatings of red oxide chromate paint as per

IS-5660/1970.

The sample Cross Arm and supplied made hereafter should bear

identification mark by way of punching or painting.

One copy of the drawing for each size of the cross arm tendered for

should be given to the purchaser.



4.0 INSPECTION


manufacture. The supplier shall grant free access to the purchaser's representative or

third party nominee at a reasonable time when the work is in progress. Inspection and

acceptance of any equipment under this specification by the purchaser shall not relieve

the supplier of his obligation of furnishing equipment in accordance with the

specification and shall not prevent subsequent rejection if the equipment is found

defective.



10.0 TECHNICAL SPECIFICATION FOR G.I. WIRE

1.0 Scope

This specification covers the manufacturing, testing at works, transport to site,

insurance, storage, erection and commissioning of Galvanised Iron Wire of sizes 4 mm

and 5 mm diameter.

2.0 General requirements

2.1 It relating to the supply of mild steel wire shall be as per IS: 1387/1967 and the wire

shall be drawn from the wire rods conforming to IS: 7887/1975.

2.2 The requirements for chemical composition for the wires shall conform to

IS:7887/1975.

2.3 Mild steel wire for General Engineering purpose shall be of following sizes:

I) 4mm - diameter (8 SWG)

II) 5mm - diameter (6 SWG)

2.4 Tolerance permitted on the diameter of wire shall be as per Table -1 of IS:280/1978.


The cross arms should be suitable for the climatic condition mentioned In these

bidding documents:

4.0 Mechanical Properties

2.10 Tensile Test: Tensile strength of wire when tested in accordance with IS:

1521-1972, shall be within the limits given in Table-2 of IS: 280/1978.

2.11 Wrapping Test: Wires shall be subjected wrapping test in accordance with IS:

1755-1961. The wire shall withstand without breaking or splitting. being wrapped eight

times round its own diameter and subsequently straightened.

5.0 Surface finish

5.1 The wire shall have galvanized finishes. The galvanized coating of steel wire shall conform

to the requirements for anyone of the types of coatings given in IS: 4826-1968 as per

agreement with the purchaser.

5.2 The coating test for finishes other than galvanized, copper coated or tinned shall be subject

to between the purchaser and the manufacturer.

5.3 Unless otherwise agreed to the method of drawing representative samples of the material and

the criteria for conforming shall be as prescribed in Appendix (A) of IS: 280/1978.

5.4 All finished wires shall be well and cleanly drawn to the dimensions specified. The wire

shall be sound, free from splits, surface flaws, rough jagged and imperfect edges and other



harmful surface defects.

5.5 Each coil of wire shall be suitably bound and fastened compactly and shall be protected by

suitably wrapped.

6.0 INSPECTION

Inspection may be carried out by the purchaser or third party nominee at any

stage of manufacture. The supplier shall grant free access to the purchaser's

representative or third party nominee at a reasonable time when the work is in

progress. Inspection and acceptance of any equipment under this specification

by the purchaser shall not relieve the supplier of his obligation of furnishing

equipment in accordance with the specification and shall not prevent subsequent

rejection if the equipment is found defective.



11.0 TECHNICAL SPECIFICATION FOR P.G CLAMP FOR AAA

CONDUCTOR

1.0 Scope:

The scope covers design, manufacturing, testing at work, transport at

site, insurance, storage, erection and commissioning of P.G. Clamp

suitable for Conductor size Wolf/RacoonlWeasel/3 Bolt Type strictly

conforming to IS : 2121 and Galvanising conforming to IS : 2633 as per

the following:

2.0 Standards:

P.G. Clamps suitable for conductor size, wolf/raccoon/weasel 3 bolt types strictly

conforming to IS : 2121 and galvanizing conforming to IS: 2633 as per the

following:

P.G. clamp body to be made from aluminium alloy

Clamps nuts and bolt and washer should be made of hot deep galvanized steel

Spring washer be made of electro-galvanize special steel.

Style

No.

Maximum

conductor

diameter in

mm

Dimensions

No of

Bolts

Approx.

Weight

Kg. A

mm

B

mm

C

mm

D

mm

E

mm

A-80 10.11 79 48 22 ½ 2 2 0.17

A-81 14.45 95 57 30 ½ 2 2 0.18

A-83 20.78 140 76 42 5/8 1 3 0.51

5.0 Climatic Conditions.



c) Maximum temperature of air in Sun 40°C

d) Maximum Humidity 93%

e) Average number of thunderstorm days 45

f) Average numbers of dust storms per annum 10

g) Maximum rainfall/annum 3500 mm

h) Average rainfall 2280 mm

i) Wind Pressure 97.8 Kg/Sq.mm



j) Altitude above MSL 100 m to 1000 m

6.0 INSPECTION


manufacture. The supplier shall grant free access to the purchaser's representative or third

party nominee at a reasonable time when the work is in progress. Inspection and

acceptance of any equipment under this specification by the purchaser shall not relieve

the supplier of his obligation of furnishing equipment in accordance with the specification

and shall not prevent subsequent rejection if the equipment is found defective.



SECTION -4

GUARANTEED TECHNICAL

PARTICULARS



GUARANTEED TECHNICAL PARTICULARS OF ALL ALUMINUM ALLOY CONDUCTOR

(AAAC)

(To be filled in by the Tenderer)

Sl.No. Description Unit Particulars

1.0 Maker’s name & Address

2.0 Conductor size and Code

3.0 IS Standard applicable

4.0 Wire diameter in mm mm

5.0 Diameter of complete conductor in mm mm

6.0 Number of strands Nos.

7.0 Sectional area of alloy Aluminum mm²

8.0 Total sectional area mm²

9.0 Particulars of Raw Materials

9.1 Aluminum

a) Minimum Purity of Aluminum %

9.2 Zinc %

a) Minimum Purity of Zinc

9.3.0 Aluminum Strands after stranding

9.3.1 Diameter

a) Nominal Mm

b) Maximum Mm

c) Minimum Mm

9.3.2 Minimum breaking Load Strand kN

9.3.3 Maximum Resistance of 1 M length Ohm

10.0 Galvanizing

a) Minimum weight of zinc coating per uncoated wire

surface gm/m²

b) Minimum number of one minute dips galvanized strand

can withstand in the test Nos.

c)

Minimum number of twists in a gauge length times dia

of wire which the strand can withstand in the torsion

test (after stranding)

Nos.

11.0 AAAC stranded conductor

11.1 UTS of conductor kN

11.2 Lay ratio of conductor Max

a) 1st layer

b) 2nd

layer



11.3 D.C resistance of conductor at 20°C Ohm/Km

11.4 Standard length of conductor M

11.5 Continuous current rating at 75°C (Enclose supporting

calculations)

11.6 Final modulus of elasticity

11.7 Co-efficient of Linear Expansion

11.8 Strand

a) Standard diameter mm

b) Minimum

c) Maximum

d) Cross-Sectional area of Nominal diameter wire mm²Nos.

e) Weight in Kg/KM

f) Minimum breaking load

Before Stranding

After stranding

Kg/kN

g) Coefficient of linear expansion

11.9 Joints in strands

a) Aluminum Alloy

b) Method of making joint

c) Ultimate tensile Strength of Joint

12.0 Maximum single length of conductor that can be

manufactured if required for single stretch Meter

13.0 Tolerance of standard length of conductor %

14.0 Direction of lay for outside layer

14.1 Linear mass of the conductor

a) Standard Kg/KM

b) Minimum Kg/KM

c) Maximum Kg/KM

15.0 No. of cold pressure butt welding available at works

16.0 Standard according to which the conductor will be

manufactured and tested

a) Certification mark if any

b) Test Certificate enclosed Yes/No

17.0 Initial & Final sag and tension charts furnished

18.0 Stress/Strain data corresponding to different tensions

temperatures furnished

19.0 Curves/tables of creep compensation corresponding to

different tension temperatures furnished

20.0 PERFORMANCE GUARANTEE



GUARANTEED TECHNICAL PARTICULARS FOR 11 KV SURGE/LIGHTENING ARRESTORS


Sl. No. Description Particulars

1 Name & Address of Supplier & Manufacturer

Surge Arrestor

Line Disconnector

Metal Oxide Block

Terminal Clamp

2 Name & address of collaborator, if an

3 Standard to which surge arrestors conforms

4.0 Surge Arrestor

4.1 Voltage rating (KV rms)

4.2 Continuous Operating Voltage (KV rms)

a) Continuous Operating Voltage (KV rms)

b) Leakage current at continuous operation voltage

c) Permitted leakage current of arrestor beyond which arrestor is

faulty.

5 Frequency (Hz.)

6 Nominal discharge current (wave shape – 8/20 micro second) (KA)

7 Pressure relief rated current (KA rms)

8. Steep current protection level at 10 KA

a) Lightning impulse protection level with 40 X 80 mico-sec. Wave

at 500/1000 A

9 Long duration current impulse withstand capacity and virtual

duration

10 Line discharge class

11 Thermal runway limit arrestor

12 Energy capability (kj/KV)

13 Pressure relief rating

14 Dry arcing distance

15 Reference current and reference voltage

16 Arrestor Housing

16.1 Power frequency one minute wet withstand voltage (kV rms)

16.2 Lightning impulse dry withstand voltage (kVP)

16.3 Creepage distance

a) Protected

b) Total

16.4 Short Circuit withstand capacity



16.5 Bending moment (mm)

17 Dis-connector

a) Constructional Details

b) Other information as applicable to surge arrestor

18 Surge Monitor

a) Constructional Details

b) Degree of protection

19 Suitable for hot line washing

20 Dimension and Weight

21

G.A Drawing indicating height of complete unit from base to line,

minimum recommended center to center spacing, clearance from

ground equipment at various height of Arrestor, earthing arrestor,

earthing arrangement on earthed side of arrestor etc.

22 Details of Packing

23 License number and date for using ISI certification mark if any

24 Ammeter for discharge current

a) Type & Make

b) Accuracy

c) Range (mA)

25 Residual voltage

26 Follow Current

27 PERFORMANCE GUARANTEE



GUUAARRAANNTTEEEEDD TTEECCHHNNIICCAALL PPAARRTTIICCUULLAARRSS OOFF 1111 kkVV PPIINN IINNSSUULLAATTOORR

(To be filled in by Tenderer)

S.N

O.

Description Particulars

1 Manufacturer’s Name & Address

2 Type of insulator offered

3 Drawing Numbers

4 Over all Dimensions (mm)

a) Height

b) Out Diameter

5 Nominal System Voltage (kV)

6 Highest System Voltage (kV)

7 Minimum Failing Load (kN)

8 Dry Power Frequency Flashover Voltage (kV)

9 Wet Power Frequency Flashover Voltage (kV)

10 Puncture Withstand Voltage (Power Frequency) (kN)

11 Min. Creepage Distance (mm)

12 Impulse Flashover Voltage : (kV)

a) 1.2/50 Micro Sec. Wage of Positive Polarity

b) 1.2/50 Micro Sec. Wage of Negative Polarity

13 Impulse Withstand Voltage : (kV)

a) 1.2/50 Micro Sec. Wave of Positive Polarity

b) 1.2/50 Micro Sec. Wave of Negative Polarity

14 Dry Power Frequency 1 Min. Withstand Voltage (kN)

15 Wet Power Frequency 1 Min. Withstand Voltage (kN)

16 Minimum Visible Discharge Test Voltage

17 Net Weight (Approx.) (Kg)

18 Standard According to which Porcelain Insulators be Manufactured

and Tested

19 Tolerance in Dimensions, if any (as per ISS)

20 Temperature Cycle Test (as per ISS)

21 Porosity Test (as per ISS)

22 Performance guarantee



GGUUAARRAANNTTEEEEDD TTEECCHHNNIICCAALL PPAARRTTIICCUULLAARRSS OOFF GGII PPIINN FFOORR 1111 KKVV PPIINN IINNSSUULLAATTOORR

(To be filled in by the tenderer)

1. Name & address of the manufacturer

2. Physical dimensions

a. Stalk length in mm

b. Shank length in mm

c. Thickness of collar in mm

d. Diameter of collar in mm

e. Diameter of shank in mm

f. Threaded length of shank in mm

g. Dia of stalk head in mm

h. Threaded length of stalk in mm.

4. Gross weight in kg.

5. Weight of zinc coating in gms

6. Mechanical failing load in KN

7. Other particulars

8. Performance guarantee



GUARANTEED TECHNICAL PARTICULARS FOR 11 KV GOAB SWITCH

A. Isolating Switches

Name of Manufacturer of Isolating Switches

Particulars for Isolating Switches

a. MVA Ratings

b. Number of Poles

c. Voltage Rating

d. Current rating (Amps)

i. Normal

ii. Maximum

iii. Short Time

e. Temperature rise of the following at the full rated current

in Degree °C over in ambient 50°C

i. Terminals

ii. Contacts

iii. Metal parts

f. Thickness in mm of Silver Plating / Tin Plating

g. Voltage drop across:

i. Each Contact

ii. Terminals

h. Frequency

i. Short Time Current and duration

j. Type of Materials used in Contacts

k. Materials used in Contacts

l. Type & Materials of the Terminal connectors provided

m. Diameter and length of the channels of GI Operating Pipe

n. Size & Length of the channels provided for mounting

three phases

o. Minimum clearance between phases.

(i.e. the centre distance between the insulating of the

adjacent phases in the assembled position of the Switches

p. Minimum clearance in air

i. Between the poles

ii. Between live parts & earth

q. Type & Detail of operating Mechanism

i. Rotating Insulator Stack

ii. Operating Shaft

r. Whether the switch is complete with the necessary

universal joints Guides locking arrangements with padlock

and key and stops etc.



s. Type of monitoring

t. Number of Breaks per phase

u. Number of breaks

v. Materials of the rotating parts

w. Weight of insulators & mechanism

x. Dimensions of the flexible cords

i. Thickness

ii. Length

iii. Weight

xi. Materials used in flexible cord, its terminal place and

the terminal block

2.1 Impulse withstand voltage with 1/50 micro-seconds wave positive

and negative polarity

i. Across Isolating distance

ii. To earth & between poles

2.2 One minute power frequency withstand voltage

i. Across Isolating distance

ii. To earth & between Poles

3.0 Does the equipments conform to ISS:1818/1961

B. Insulators

1.0 Particulars for Insulators

1.1 Type of Insulator

1.2 Name of the Manufacturer of the Insulator

1.3 Height of Insulator

1.4 Diameter of the Largest Shed

1.5 Number of units per stack

2.0 Electrical Characteristics (for one Insulator)

2.1 Flashover voltage

a. Dry Power Frequency

b. Wet Power Frequency

c. Impulse voltage of 1/50 micro-secs. (+ve)

d. Impulse voltage of 1/50 micro-secs. (-ve)

2.2 Withstand Voltage

a. Dry Voltage

b. Wet voltage

c. Impulse voltage of 1/50 micro-secs. (+ve)

d. Impulse voltage of 1/50 micro-secs. (-ve)

2.3 Power frequency puncture withstand of unit

2.4 Mechanical characteristics

a. Cantilever strength upright



b. Cantilever strength under hand

c. Torsional strength

d. Tensile strength

e. Compression strength

2.5 General characteristics

a. Minimum creepage distance

b. Weight of complete unit

c. Weight of non-ferrous parts (total)

d. Weight of ferrous parts (total)

2.6 Standard to which insulator conforms

Note: Value for Insulators should be given in metric units and should be for one insulator only

3.0 PERFORMANCE GUARANTEE



GUARANTEED TECHNICAL PARTICULARS FOR 11 KV DISC INSULATOR 45 KN(T&C)


Sl.No Description Particulars


2 Type of Insulator offered

3 Drawing Numbers

4 Overall Dimensions (mm)

a) Height

b) Outer Diameter

5 Nominal System Voltage (kV)

6 Highest System Voltage (kV)

7 Minimum Failing Load (kN)

8 Dry Power Frequency Flashover Voltage(kV)

9 Wet Power Frequency Flashover Voltage(kV)

10 Puncture withstand Voltage (Power Frequency) (kN)

Minimum Creepage Distance (mm)

11 Minimum Creepage Distance (mm)

12 Impulse Flashover Voltage (kV)

a) 1.2/50 Micro-Sec. Wave Positive Polarity

b) 1.2/50 Micro-Sec. Wave Negative Polarity

13 Impulse Withstand Voltage (kV)

a) 1.2/50 Micro-Sec. Wave Positive Polarity

b) 1.2/50 Micro-Sec. Wave Negative Polarity

14 Dry Power Frequency 1 Min. Withstand Voltage (kN)

15 Wet Power Frequency 1 Min. Withstand Voltage (kN)

16 Minimum Visible Discharge test Voltage

17 Net Weight (approx.) (Kg.)

18 Standard According to which Porcelain Insulators to be Manufactured

and tested

19 Tolerance in Dimensions, if any (as per ISS)

20 Temperature Cycle Test (as per ISS)

21 Porosity Test (as per ISS)

22 PERFORMANCE GUARANTEE



GGUUAARRAANNTTEEEEDD TTEECCHHNNIICCAALL PPAARRTTIICCUULLAARRSS OOFF HH..TT.. && LLTT GGUUYY IINNSSUULLAATTOORR

S.NO. PARAMETER GUARANTEED VALUE


2 Type of insulator

3 Standards to which insulator will conform

4 Dimensions

5 Hole diameter (mm)

6 Color of glaze

7 Dry Power Frequency withstand Voltage (kV)

8 Wet Power Frequency withstand Voltage (kV)

9 Minimum failing load (Newton)

10 Minimum Creepage distance (mm)

11 Weight per piece (Kg)

12 Temperature cycle test (as per ISS)

13 Porosity test (as per ISS)

14 Tolerance, if any (as per ISS)

15 Performance guarantee



GUARANTEED TECHNICAL PARTICULARS OF L.T. SHACKLE INSULATOR


Sl.No. Description Particulars


2 Type of Insulator

3 Standards to which insulator will conform

4 Dimensions

5 Hole diameter (mm)

6 Color glaze

7 Dry power Frequency Withstand Voltage (kV)

8 Wet power Frequency Withstand Voltage (kV)

9 Dry power Frequency Flashover Voltage (kV)

10 Wet power Frequency Flashover Voltage (kV)

11 Power Frequency Puncture Withstand Voltage (kV)

12 Minimum failing load (kN)

13 Minimum Creepage Distance (mm)

14 Weight per piece (Kg)

15 Temperature cycle test (as per ISS)

16 Porosity test (as per ISS)

17 Tolerance, if any (as per ISS)

18 PERFORMANCE GUARNATEE



GGUUAARRAANNTTEEEEDD TTEECCHHNNIICCAALL PPAARRTTIICCUULLAARRSS FFOORR GG..II.. WWIIRREE

((TTOO BBEE FFUURRNNIISSHHEEDD BBYY BBIIDDDDEERR))

A. G.I.Wire (4 mm dia) :

1. Size of Wire :

2. Tolerance in size of wire :

3. Tensile strength :

4. Wrapping list :

5. Galvanising conforming to IS : 4826

– 1968 :

6. Guarantee :

B. G.I.Wire (5 mm dia) :

1. Size of Wire :

2. Tolerance in size of wire :

3. Tensile strength :

4. Wrapping list :

5. Galvanising conforming to IS : 4826

– 1968 :

6. Performance guarantee :

CEO/TEC/APDCL/CAR/2011/PS(J)/T&B/ Page No 84

GGUUAARRAANNTTEEEEDD TTEECCHHNNIICCAALL PPAARRTTIICCUULLAARRSS FFOORR CC..II.. PPIIPPEE ((EEAARRTTHH))

((TTOO BBEE FFUURRNNIISSHHEEDD BBYY BBIIDDDDEERR))

Sl. G.I.Wire (4 mm dia) :

1. Length of Pipe :

2. Diameter of Pipe :

3. External Dia of Pipe :

4. Thickness of Pipe :

5. Internal Dia of Socket :

6. Thickness of Socket :

7. Internal Depth of Socket :

8. Internal Radius of Socket :

9. Width of Grooves of Socket :

10. External Dia of Grooves Socket

11. Weight of Pipe :

12. Hydraulic Test :

13. Guarantee :