10-TMSS-01-R0

TRANSMISSION MATERIALS STANDARD SPECIFICATION

10-TMSS-01, Rev. 0

TABLE OF CONTENTS

1.0

SCOPE

2.0

CROSS-REFERENCES

3.0

APPLICABLE CODES AND STANDARDS

4.0

DESIGN AND CONSTRUCTION REQUIREMENTS 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9

General Design Criteria Ratings Materials Fabrication Mass and Electrical Resistance Area and Diameter Reel Design Markings

5.0

TESTS

6.0

PACKING AND SHIPPING

7.0

DATA SCHEDULE

10TMSS01R0/MAR

Date of Approval: March 13, 2006

PAGE NO. 2 OF 20


1.0

10-TMSS-01, Rev. 0

SCOPE This Transmission Material Standard Specification (TMSS) specifies the minimum technical requirements for design, engineering, manufacture, inspection, testing and performance of the Bare conductors for use in the overhead transmission line system of Saudi Electricity Company (SEC), Saudi Arabia. The conductors shall be of the following types:

2.0

1.1

ACSR:

Aluminum Conductor Steel Reinforced.

1.2

ACAR:

Aluminum Conductor, Alloy Reinforced.

1.3

AAAC:

All Aluminum Alloy Conductor.

1.4

ACSR/AW:

Aluminum Conductor, Aluminum Clad Steel Reinforced.

CROSS-REFERENCES This Material Standard Specification shall be read in conjunction with the latest revision of SEC General Specification No. 01-TMSS-01, titled "General Requirements for All Transmission Equipment/Materials" which shall be considered as an integral part of this TMSS. This TMSS shall also be read in conjunction with SEC Purchase Order or Contract Schedules for project, as applicable.

3.0

APPLICABLE CODES AND STANDARDS The latest revisions of the following Codes and Standards shall be applicable for the material covered in this TMSS. The vendor/manufacturer may propose equipment/material conforming to equivalent Industry Codes and Standards other than those quoted hereunder without jeopardizing the requirements of this TMSS, in which case he shall submit a copy of the proposed standards and shall submit a written proof that the proposed standards are equivalent in all significant respects to the standards specified. Acceptability of any alternate code or standard is at the discretion of SEC.

3.1

ASTM B 232

Specification for Concentric-Lay-Stranded Conductors, Coated-Steel Reinforced (ACSR)

3.2

ASTM B524M

Specification for Concentric-Lay Aluminum Conductors, Aluminum alloy Reinforced (ACAR 1350/6201).

10TMSS01R0/MAR


Aluminum

PAGE NO. 3 OF 20


10-TMSS-01, Rev. 0

3.3

ASTM B399

Specification for Concentric-Lay All Aluminum alloy Conductors (AAAC).

3.4

ASTM B549

Specification for Concentric-Lay Stranded Aluminum Conductors, Aluminum-Clad Steel Reinforced(ACSR/AW)

3.5

ASTM B 230M

Standard Specification for Aluminum 1350-H19 Wire for Electrical Purposes

3.6

ASTM B 398M

Standard Specification for Aluminum-Alloy 6201-T81 Wire for Electrical Purposes

3.7

ASTM B 502

Standard Specification for Aluminum-Clad Steel Core Wire for Aluminum Conductors, Aluminum-Clad Steel reinforced

3.8

ASTM B498

Standard Specification for Zinc- Coated (Galvanized) Steel Core Wire for Aluminum Conductors Steel Reinforced (ACSR)

.

3.9

BS 1559

Reels and Drums for Bare Wires

3.10

IEC -1089 ..

Round Wire Concentric Lay Overhead Electrical Stranded Conductors.

3.11

IEC -60888

Zinc-Coated Steel Wires for Stranded Conductors.

3.12 .

IEC -60889 .

Hard-Drawn Aluminium Wire for Overhead Line Conductors.

3.13 .

IEC-60104

Aluminium-Magnesium-Silicon Alloy Wire for Overhead Line Conductors.

3.14

IEC -208

Aluminium conductors for overhead transmission purposes.

3.15

ASTM D-217

Grease.

10TMSS01R0/MAR


.

PAGE NO. 4 OF 20


4.0

10-TMSS-01, Rev. 0

DESIGN AND CONSTRUCTION REQUIREMENTS

4.1

4.2

4.3

10TMSS01R0/MAR

General

4.1.1

The bare overhead ACSR, ACAR, AAAC and ACSR/AW conductors shall be of manufacturer's standard design but shall meet or exceed the requirements of this Specification in all respects.

4.1.2

Manufacturer's drawings, as required in 01-TMSS-01, shall show the cross-section of the bare overhead line conductor, together with all pertinent dimensions.

Design Criteria

4.2.1

The maximum ambient outdoor temperature specified in 01-TMSS-01 shall be regarded as the basic temperature.

4.2.2

The bare overhead line conductor shall be classified as Class AA, bare conductors.

Ratings

4.3.1

The bare overhead ACSR, ACAR, AAAC and ACSR/AW conductors rating data shall be as specified in Data Schedule.

4.3.2

The ratings and characteristics of bare overhead line conductors covered by this Specification are given in Tables 1,2 and 3.

4.3.3

The rated strength of a composite ACAR type conductor shall be taken as the aggregate sum of the strengths of the Aluminum 1350 and Aluminum-alloy 6201 components, calculated in accordance with the procedure described in ASTM B 524M.

4.3.4

The rated strength of a composite ACSR/AW type conductor shall be taken as the aggregate sum of the strengths of the Aluminum 1350 and Aluminum-clad steel components, calculated in accordance with the procedure described in ASTM B 549.


PAGE NO. 5 OF 20


10-TMSS-01, Rev. 0

4.3.5

The rated strength of a composite ACSR type conductor shall be taken as the aggregate sum of the strengths of the Aluminum 1350 and zinc coated steel components, calculated in accordance with the procedure described in ASTM B 232.

4.3.6

The electrical volume conductivity of the individual Aluminum, Aluminum alloy and Aluminum-clad steel wires before stranding shall not be less than 61.2%, 52.5% and 20.3% of IACS (Internationally Annealed Copper Standard) respectively.

Table 1 : Ratings and Characteristics of ACAR and ACSR/AW Bare Overhead Line Conductors Type of Conductor and Code Word

ACSR/AW “DRAKE”

ACSR/AW “ORIOLE”

ACSR/AW “MERLIN”

ACSR/AW “PENGUIN”

ACSR/AW “QUAIL”

1080.6

795

336.4

336.4

211.6

133.1

547.4

402.83

170.45

170.45

107.22

67.44

547.4

468

210.23

179.92

125.1

78.67

Aluminum

18/4.344

26/4.4425

30/2.6899

18/3.4722

6/4.7701

6/3.7821

Aluminum Alloy or AluminumClad Steel

19/4.344

7/3.454

7/2.6899

1/3.4722

1/4.7701

1/3.7281

Rated Strength (kN)

121

135.7

74.3

38

34.2

22.8

Calculated Nominal DC Resistance Maximu at 20oC m (Ω / km) Nominal Conductor Mass (kg/km) *Ampacity(A)

0.0566

0.0679

0.1571

0.1652

0.253

0.401

0.0577

0.0693

0.1606

0.1688

0.258

0.409

1509

1549

737

531

412

259

860

850

500

480

370

270

kcmil e z i S r o t c u d n o C ) g m n i m d / . n s a o r t N S (

Nominal Aluminum Area (mm2) Total CrossSection (mm2)

ACAR

* - Conductor Ampacity is a typical value and is based on conductor temperature of 85 oC (ACAR) and 93oC (ACSR/AW), ambient temperature 50 oC , emissivity 0.5, cross wind 0.61 m/sec, in sun

10TMSS01R0/MAR


PAGE NO. 6 OF 20


10-TMSS-01, Rev. 0

Table 2 : Ratings and Characteristics of ACSR Overhead Line Conductors Type of Conductor and Code Word

Curlew

Drake

Condor

Grosbeak

Hawk

Oriole

Wolf

1033

795

795

636

477

337

312

522.5

402.83

402.83

322.26

241.68

170.45

158

590.32

468.45

455.03

374.78

281.03

210.26

194.9

54/3.51

26/4.44

54/3.08

26/3.97

26/3.44

30/2.69

30/2.59

7/3.51

7/3.45

7/3.08

7/3.09

7/2.68

7/2.69

7/2.59

Nominal Overall Diameter (mm)

31.62

28.11

27.03

25.15

21.81

18.83

18.13

Rated Strength (kN)

125.4

140.2

125.5

111.8

87

77.2

69.2

Calculated DC Resistance at 20ºC (Ω /km) Maximum

.05531

.07192

.07192

.08989

.01119

.1704

.1828

Nominal Conductor Mass (kg/km)

1929

1628

1524

1302

977

784

726

808

705

688

609

528

415

315

e z i S r o t c u d n o C

kcmil

Nominal Aluminum Area (mm2) Total CrossSection (mm2)

) g m Aluminum n i m d / . n s a r o t Steel S N (

*Ampacity(A)

* - Conductor Ampacity is a typical value and is based on conductor temperature of 80 oC, ambient temperature 50 oC , emissivity 0.5, cross wind 0.61 m/sec, in sun

10TMSS01R0/MAR


PAGE NO. 7 OF 20


10-TMSS-01, Rev. 0

Table 3: Ratings and Characteristics of AAAC Overhead Line Conductors Type of Conductor and Code Word

Cosmos

Orchid

Arbutus

German Standard

548

732

954

998

278

371

483.8

506

19/4.32

37/3.57

37/3.99

61/3.25

Nominal Overall Diameter (mm)

21.59

25.01

27.98

29.3

Rated Strength (KN)

84.8

113.1

141.4

147

Calculated DC Resistance at 20ºC (Ω /km) Maximum

0.01190

0.08949

0.07180

0.066

Nominal Conductor Mass (kg/km)

783.2

1020

1275

1402

518

604

693

790

r kcmil o t c e u z d i Nominal n S o Area C 2

(mm )

) g m n i m Aluminum d / . n s a Alloy r o t N S (

*Ampacity(A)

* - Conductor Ampacity is a typical value and is based on conductor o o temperature of 80 C, ambient temperature 50 C , emissivity 0.5, cross wind 0.61 m/sec, in sun

4.4

10TMSS01R0/MAR

Materials 4.4.1

The bare overhead line ACSR type conductor shall consist of concentric-lay-stranded conductor made from round Aluminum 1350H19 (extra hard) wires and zinc coated steel core wire(s). The steel core may consist of a single wire or stranded depending upon the size of the conductor.

4.4.2

The bare overhead line ACAR type conductor shall consist of concentric-lay-stranded conductor made from round Aluminum 1350H19 wires and round Aluminum-alloy 6201-T81 core wires. Date of Approval: March 13, 2006

PAGE NO. 8 OF 20


4.4.3

The Bare overhead line AAAC type conductor shall consist of concentric-lay-stranded conductor made from wires of Aluminum-alloy 6201 produced by the thermal treatment, with or without supplementary strain-hardening, for stable temper T81, drawn and then artificially aged. Before stranding, the Aluminum alloy wires used in the construction of conductors shall meet the requirements of ASTM B 398M.

4.4.4

The Aluminum wires shall be made from Aluminum 1350 drawing stock 9.52 mm to 25.40 mm in diameter, in the H19 temper and drawn into wire. Before stranding, the Aluminum wires used in the construction of conductors shall meet the requirements of ASTM B 230M.

4.4.5

The bare overhead line ACSR/AW type conductor shall consist of concentric-lay-stranded conductor made from round Aluminum 1350H19 (extra hard) wires and round Aluminum-clad steel core wire(s). The steel core may consist of a single wire or stranded depending upon the size of the conductor.

4.4.6

The base metal of the Aluminum-clad steel core wire or galvanized steel core shall be steel produced by the open-hearth, electric furnace or basic oxygen process and the finished clad wire shall meet the requirements of ASTM B 502.

4.4.7

The Aluminum used for cladding at any point have a purity and quantity sufficient to meet the required thickness of not less than 10 percent of the nominal wire radius.

4.4.8

The zinc coatings for steel core wire for ACSR conductors shall conform to class A zinc coated steel wire in accordance with specification ASTM B498.

4.4.9

All wires used in manufacture of conductor shall be free from protrusions , sharp edges, abrasions and any other imperfections which would tend to increase corona losses and cause radio inteference problems.

4.4.10

If specifically ordered in a particular bidding document, the steel core wires of ACSR conductors shall be uniformly covered with a neutral grease approved by SEC. The method of application shall be by grease filling at the rate specified in the relevant data schedules. The grease shall have a drop point of not less than specified in the relevant data schedule. a.

10TMSS01R0/MAR

10-TMSS-01, Rev. 0

The supplier/contractor shall guarantee that the grease shall not immigrate towards outside the conductor before, during and after stringing in a maximum conductor working temperature conditions.


PAGE NO. 9 OF 20


4.5

10TMSS01R0/MAR

10-TMSS-01, Rev. 0

b.

The grease shall protect the conductor from corrosion in service which may include operation in atmospheres containing salt spray or industrial pollution.

c.

The grease shall not corrode steel or Aluminum wires. At a temperature of up to 95 degree centigrade the grease shall neither flow within nor extrude from the conductor. The specified characteristics of the grease shall be unimpaired after heating to 15 degree centigrade above the drop point for 150 hours.

d.

The grease shall have adequate resistance to oxidization. The grease shall retain its properties including flexibility, reversibility, resistance to oxidisation and chemical stability, at all service temperature between 0 and 40 degree centigrade.

e.

The minimum drop point of grease shall not be less than 110 degree centigrade measured to ASTM-designation: D-566.

f.

The nominal mass of grease to be applied on the steel core shall be in accordance with IEC- 1089 ( Annex C)

Fabrication 4.5.1

The bare overhead line conductor shall be constructed in conventional concentric-lay conductor type. The direction of lay of the outer layer shall be right hand and shall be reversed in successive layers.

4.5.2

The preferred lay of a layer of wires is 13.5 times the outside diameter of that layer but shall not be less than 10 nor more than 16 times this diameter.

4.5.3

The lay ratio of any layer shall not be geater than the lay ratio of the layer immediately beneath it.

4.5.4

The conductor shall be stranded in one pass. If this cannot be done, the conductor shall be stranded in a maximum of two passes.

4.5.5

For ACSR conductor, steel wire from various manufacturers may be used. However, all conductor for a given destination shall be manufactured from the steel core wire from one manufacturer. If steel wire from more than one source is being used, this should be indicated on the reels.

4.5.6

In ACAR conductor composed of 37 wires or more, the welded joints in the Aluminum wires shall not be closer than 7.5 m to another or to either end of the wire. In ACAR or ACSR/AW conductor composed of Date of Approval: March 13, 2006

PAGE NO. 10 OF 20


10-TMSS-01, Rev. 0

wires less than 37, the welded joints in the Aluminum wires shall not be closer than 15 m to another or to either end of the wire. No more than two such joints shall be present in any reel length of the conductor. 4.5.7

In ACSR conductors no two joints in the completed conductor shall occur within 15m of each other and no two joints in any individual Aluminum wire are less than 150 m apart. The Aluminum wire near each resistance welded joint shall be annealed over a distance of at least 200 m each side to such an extent that on testing the whole conductor to destruction the unjointed strands break first. The jointing should be done in a neat and workman like manner. The finished joint shall be smooth and at no point shall the crossectional area be less than that of the unjointed wire.

4.5.8 No joints shall be made in the Aluminum-alloy wires during the final drawing or in the finished wires. Joints may be made in the drawing stock, and in the wire after heat treatment and prior to final drawing. No such joints shall be closer than 7.5m to another or to either end of the wire and not more than two such joints shall be present in any reel length of the conductor. 4.5.9 No joints of any kind shall be made in the finished Aluminum-clad steel wires and Zinc coated steel wires. Joints may be made in the rods or semi-finished wires prior to drawing to final size. 4.5.10 The surface of the wire shall be smooth and free from imperfections not consistent with good manufacturing practice.

4.5.11 The conductors shall be manufactured so that twisting is as small as possible when they are subject to axial loads i-e when unrolling and stringing. 4.5.12 The manufacturing of all conductors shall be such that the strands shall remain inert and shall not untwist when the conductor is cut. 4.6

10TMSS01R0/MAR

Mass and Electrical Resistance 4.6.1

The approximate mass and electrical DC resistance at 20°C may be determined using the standard increments specified in ASTM B524M for ACAR conductors and ASTM B549 for ACSR/AW conductors.

4.6.2

The approximate mass and electrical DC resistance at 20°C may be determined using the standard increments specified in ASTM B232 for ACSR conductors and ASTM B399 for AAAC conductors.

4.6.3

In the calculation of the electrical resistance of ACAR conductor, the resistance of both the Aluminum 1350 and the Aluminum-alloy 6201 wires must be taken into consideration. The resistivity of Aluminum and Aluminum alloy wires shall be taken as 0.028172 Ω.mm2/m and 0.032841 Ω.mm2/m at 20ºC respectively. Date of Approval: March 13, 2006

PAGE NO. 11 OF 20


4.7

4.8

10TMSS01R0/MAR

10-TMSS-01, Rev. 0

4.6.4

In the calculation of the electrical resistance of AAAC conductor, the resistivity of Aluminum alloy wires shall be taken as 0.032841 2 Ω.mm /m at 20ºC.

4.6.5

In the calculation of the electrical resistance of ACSR and ACSR/AW conductors, the resistivity of the Aluminum wire and Aluminum-clad steel core wire shall be taken as 0.028172 Ω.mm2/m and 0.08480 Ω.mm²/m at 20°C respectively.

Area and Diameter 4.7.1

The area of cross section of the conductors shall not be less than 98% of the area of the cross section of conductor sizes specified in Tables 1, 2 and 3.

4.7.2

For Aluminum wires with diameters 3 mm and over, the diameter shall not vary from the specified by more than ±1%. For Aluminum wires with diameters 1 mm to 2.99 mm, the diameter shall not vary from the specified by more than ±0.030 mm.

4.7.3

For Aluminum-alloy wires with diameters 3 mm to 4.75 mm, the diameter shall not vary from the specified by more than ±1%.

4.7.4

For Aluminum-clad steel wires with diameters 2.538 mm to 4.775 mm, the diameter shall not vary from the specified by more than 1.5%.

4.7.5

The area and diameter of bare overhead line conductors covered by this specification are specified in Tables 1,2 and 3.

Reel Design 4.8.1

Reels may be of wood or steel construction capable of withstanding overseas shipment, normal service incident during shipping and hauling and field installatioin of conductor.

4.8.2

All wooden drums shall be fitted with steel hubs having a minimum inside diameter of 80 mm. The ratio of the diameter of the inside barrel and the diameter of the flange must not be less than 0.48.

4.8.3

Drawings of the drum shall be submitted for approval of SEC. The drums should be close lagged after filling. Wooden battens shall be nailed at each end to the drum flange and also secured by two steel starps.

4.8.4

The timber to be used shall be new , dry, properly seasoned and suitably treated to withstand changes in temperature and humidity without deterioration or shrinkage. The timber must be treated with fungicidal and germicidal termite and white ant proof preservative prior to painting. Date of Approval: March 13, 2006

PAGE NO. 12 OF 20


4.8.5

10-TMSS-01, Rev. 0

All drums shall be painted inside and outside with Aluminum paint.

4.8.6 Nails shall be fitted with proper care to avoid any contact with the conductor. Nailing shall be executed from the inside towards the outside. The nail heads shall be embeded into the flange for approximately 6mm, while their points shall be sufficiently long to allow a proper revetting of about 15mm. The spacing of the nails shall be approximately 70 mm. Before punching the nails into the timber they should be vetted with Ammonia to facilitate the gripping. 4.8.7

The threaded spindles should be bolted in such a way that the washers are embeded into the flanges a few millimeters. Moreover, the spindle nuts should be properly locked to avoid their lossening as a cosequence of expansion and subsequent timber shrinkage due to thermal effects and/or humidity. The threaded end of the spindle shall not protrude above the nut with more than one thread. The nuts shall always be locked by rivetting the threaded end. The flanges shall be fitted with reinforcing steel nuts bushings.

4.8.8

The inner wrapping of the drum shall be made with a double layer of water proof paper and another layer shall be placed over the conductor under the lagging. One layer of waterproof paper must be inserted underneath the last layer of conductor on the drum to avoid sliding against the inner layer. Moreover, the conductor shall be tied at the beginning of the last outer turn to one flange with a suitable string and the outer end stapled to the outer flange to avoid the conductor moving from the correct positon.

4.8.9

A piece of conductor ,450mm long, shall be left sticking out of the flange hole. The extreme end of the conductor shall be tied, then 250 mm left free and then the remaining 150 to 200 mm shall be tied and tapped and covered with cloth ( no jute allowed). The untied section shall be bent as much as possible towards the centre of the drum and nailed. Four staples strong enough to withstand transport stresses shall be used, the two outside must clamp the whole conductor, whilst the two inside are fixed through the conductor in order to prevent its sliding.

4.8.10 The length of overhead line conductor per reel shall be preferably in the range of 3000 to 3500 meters unless otherwise different lengths are required as per actual site requirements or as agreed between SEC and the manufacturer. The reel length shall not vary more than ±5% of the specified length. If matched reels are required, the lengths of the conductor in each reel shall not vary by more than 50 m. 4.9

Markings 4.9.1

10TMSS01R0/MAR

Each end of line conductor in the reel shall bear a non-corroding tag, written in English language, identifying the following: Date of Approval: March 13, 2006

PAGE NO. 13 OF 20


a. b. c. d. e. f. 4.9.2

Type of Conductor and code word Size of Conductor Weight of conductor Length of Conductor Stranding Cross-sectional Area

Each reel shall be stenciled or provided with metal plates to show all information under paragraph 4.9.1 plus additional information as follows: a. b. c. d. e. f. g. h. i. j. k.

5.0

10-TMSS-01, Rev. 0

Manufacturer's Name and Country of Origin Year of Manufacture Serial Number Size of Reel Gross Weight SEC Item Number SEC Purchase Order Number/Contract Number Consignee Address Direction of Rolling with instructions “ROLL THIS WAY” 10-TMSS-1, Rev. 0 Innstructions “DO NOT LAY FLAT”

TESTS 5.1

All conductors shall be tested at the supplier’s expense in accordance with the latest additions of relavent Standards referenced to in this Specification. Following completion of the tests, two certified copies of the test reports shall be submitted to SEC for approval. No conductors shall be shipped until the test reports have been approved by SEC.

5.2

SEC representative may wish to witness tests or to visit the factory during manufacturing of any or all items covered by this specification. Accordingly , the supplier/ contractor shall give adequate notice of manufacturing schedule and at least one month’s notice of test schedule

5.3

Tests for mechanical and electrical properties of component wires shall also be made before stranding

5.4

All Aluminum and Aluminum-alloy wires removed from the conductor shall be capable of meeting the bending properties stated in ASTM B 230M and ASTM B 398M respectively after stranding.

5.5

Torsion tests shall be made on Aluminum-clad steel wires. The wire shall withstand without fracture not less than 20 twists in a length equivalent to 100 times the nominal diameter of the wire.

5.6

Tests for determining the breaking strength of composite conductor shall be required under this specification. The breaking strength of a conductor shall not be less than the rated strength if failure occurs in the free length at least 25 mm

10TMSS01R0/MAR


PAGE NO. 14 OF 20


10-TMSS-01, Rev. 0

beyond the end of either gripping device, or shall be not less than 95 % of the rated strength if failure occurs inside, or within 25 mm of the end of, either gripping device. 5.7

Ultimate strength and longitudinal smoothness tests shall be carried out on a minimum length of 12 meters of conductor cut off from no more than one reel out of every 100. However, SEC reserves the right to test one sample from each production run of less than 100 reels. The longitudinal smoothness of the conductor shall be checked with a straight edge of length equal to 30 times the conductor diameter laid parallel to the conductor under the tensile load of 50% of the ultimate breaking strength. Under these conditions the maximum variation from the straight edge shall not exceed o.4mm.

5.8

Stress-strain tests shall be performed on the conductors in accordance with the method given in annex B of I EC-1089.

5.9

The tests mentioned in clauses 5.6 and5.7 above are Type Tests and shall be carried out at an approved independent international test laboratory or at the manufacturer’s laboratory and be witnessed by a representative of SEC or other representative acceptable to SEC. Type test certificates in lieu of the tests may be accepted provided that the tests have been carried out within the last five years.

5.10

In additions to the tests specified in ASTM standards and any other tests specified elsewhere in this specification, the following characteristics of the finished conductors should be checked by taking samples from every 10 th reel. 5.10.1 5.10.2 5.10.3 5.10.4 5.10.5

Overall Diameter. Length, ratio and direction of lay. Weight per unit length. D.C. resistance of each Aluminum strand. Cracks, scores, undue cross-over marks indentations, cagging etc of each layer.

5.11

The zinc coated steel strands for ACSR conductors shall pass the preece test in accordance with the latest edition of ASTM A 239.

5.12

Records for all joints made in the conductor wires shall be submitted to SEC.

5.13

If on testing the sample from any drum fails to conform to the requirements of the specification two additional samples shall be taken from the same drum and tested. Both these samples shall conform to the requirements otherwise the drum shall be rejected. Samples shall then be taken from all the drums offered for acceptance and tested. If the sample from any drum does not meet the requirements, that drum shall be rejected. If the number of drums rejected exceed 20% of the offered lot, the complete lot shall be rejected.

10TMSS01R0/MAR


PAGE NO. 15 OF 20


6.0

10-TMSS-01, Rev. 0

PACKING AND SHIPPING In addition to the packing and shipping requirements specified in 01-TMSS-01, the following shall be fulfilled: 6.1

The overhead line conductor shall be furnished on non-returnable wooden reels, protected by wood lagging or other suitable method against damage during shipment and to facilitate field handling and long-term outdoor storage. However, the manufacturer may at his own option furnish the conductor on returnable steel reels at no additional cost to SEC.

6.2

The method of packing shall be strong enough to withstand wear and tear during sea/inland transportation and handling at site.

6.3

Methods of packaging, marking and shipping shall be submitted to SEC for review and acceptance.

10TMSS01R0/MAR


PAGE NO. 16 OF 20


7.0

10-TMSS-01, Rev. 0

DATA SCHEDULE

BARE OVERHEAD LINE CONDUCTOR SEC Enquiry No.

Date:

SEC Purchase Order No. or Contract No.

Date:

SEC PTS No./Project Title with J.O. No. REFERENCE SECTION NO. 3.0

DESCRIPTION

'A'

'B'

'C'

APPLICABLE CODES AND STANDARDS Applicable Industry Standards

4.0

DESIGN AND CONSTRUCTION REQUIREMENTS

4.1

Conductor type (ACSR, AAAC, ACAR or ACSR/AW

4.2

Rated strength (kN

4.5

Direction of lay (outer layer)

4.6

Electrical Resistivity of Aluminum wire at 20°C (Ω. mm2/m)

0.028172

Electrical Resistivity of Aluminum alloy wire at 20°C ( Ω. mm2/m)

0.032841

Electrical Resistivity of Aluminum-clad steel wire at 20°C (Ω. mm2/m)

0.08480

Right Hand

Electrical Volume Conductivity of Aluminum wire at 20°C (% IACS)

61.2

'A'- SEC SPECIFIED DATA/PARAMETER. 'B'- BIDDER/SUPPLIER/VENDOR/CONTRACTOR PROPOSED DATA/PARAMETERS. 'C'- REMARKS SUPPORTING THE PROPOSED DEVIATION IN COLUMN 'B'. (*)- DATA/PARAMETER TO BE PROVIDED/PROPOSED BY THE BIDDER/SUPPLIER/ VENDOR/CONTRACTOR IN COLUMN 'B'.

10TMSS01R0/MAR


PAGE NO. 17 OF 20


7.0

10-TMSS-01, Rev. 0

DATA SCHEDULE

BARE OVERHEAD LINE CONDUCTOR REFERENCE SECTION NO.

4.7

DESCRIPTION

'A'

Electrical Volume Conductivity of Aluminum alloy wire at 20°C (% IACS)

52.5

Electrical Volume Conductivity of of Aluminum–clad steel wire at 20°C (% IACS)

20.3

Calculated nominal dc resistance at 20°C ( Ω/km)

*

Calculated maximum dc resistance at 20°C (Ω/km)

*

'B'

'C'

Nominal area of Aluminum wires (mm2) Total cross sectional area (mm²) Number of 1350-H19 Aluminum wires Diameter of 1350-H19 Aluminum wires (mm) Diameter of 6201-T81 Aluminum-alloy wires (mm)

Number of Aluminum-clad steel wires Diameter of Aluminum-clad steel wires (mm) Number of galvanized steel wires Diameter of galvanized steel wires Nominal Overall diameter (mm) Nominal Overall Mass (kg/km)

10TMSS01R0/MAR

*


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7.0

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DATA SCHEDULE

BARE OVERHEAD LINE CONDUCTOR REFERENCE SECTION NO.

4.8

DESCRIPTION

Type of reel (Steel or Wood)

'A'

'B'

'C'

*

Matched reels required?

Yes/No

Number of matched reels per set Length of conductor per reel (m) Weight of conductor per reel (kg) If not matched reels, tolerance in conductor length per reel (%) Steel Core Greasing ( If ordered) Name of manufacturer Standard of test Minimum Drop Point Temperature

5.0

TESTS Optional or Special Test Requirements (if any)

10TMSS01R0/MAR


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7.0

10-TMSS-01, Rev. 0

DATA SCHEDULE

BARE OVERHEAD LINE CONDUCTOR A.

ADDITIONAL TECHNICAL INFORMATION OR FEATURES TO BE FURNISHED BY SEC:

B.

ADDITIONAL SUPPLEMENTARY DATA OR BIDDER/VENDOR/SUPPLIER/CONTRACTOR:

C.

OTHER PARTICULARS TO BE FILLED UP BY BIDDER/VENDOR/SUPPLIER/ CONTRACTOR:

FEATURES

Actual Manufacturer of Equipment/Material

PROPOSED

BY

Vendor/Supplier/ Contractor

Name of the Company Location and address

Name and Signature of authorized representative and date

Official Seal/Stamp of the Company & Date

10TMSS01R0/MAR


PAGE NO. 20 OF 20

10-TMSS-01-R0

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