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TTEECCHHNNIICCAALL SSPPEECCIIFFIICCAATTIIOONN

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AAlluummiinnuumm CCoonndduuccttoorr SStteeeell RReeiinnffoorrcceedd

((AACCSSRR))

Designer Sandy Hong

Senior Technical Manager

ZTT International Department

Approver

Chief Technical Engineer

ZTT International Department

SPEC No.: ZTT 12-28351

REVISION: 1.1

All Rights Reserved Copyright © 2012, Jiangsu Zhongtian Technology Co., Ltd. (ZTT)

Http://www.zttcable.com /6

1. SCOPE

This specification covers the general requirements and performance of conductor which ZTT offered

including electrical characteristics, mechanical characteristics, packing information etc.

2. REFERENCES

The conductor which ZTT offered shall be designed, manufactured and tested according to

international standards as follows:

Quality Control Standard

ISO 9001 Quality Management Systems

ISO 14001 Environmental Management Systems

Component Wire Standard

IEC 60888 Zinc-coated steel wires for stranded conductors

IEC 61232 Aluminum-clad steel wires for electrical purposes

IEC 60104 Aluminum-magnesium-silicon alloy wire for overhead line conductors

IEC 60889 Hard-drawn aluminum wire for overhead line conductors

ASTM B502 Standard specification for aluminum-clad steel core wire for aluminum conductors, aluminum-clad steel reinforced

ASTM B609 Standard specification for aluminum 1350 round wire, annealed and intermediate tempers, for electrical purposes

ASTM B498 Standard specification for zinc-coated (galvanized) steel core wire for aluminum conductors, steel reinforced (ACSR)

ASTM B230 Standard specification for aluminum 1350-H19 wire for electrical purposes

ASTM B398 Standard specification for aluminum-alloy 6201-T81 wire for electrical purposes

ASTM B415 Standard specification for hard-drawn aluminum-clad steel wire

Conductor Standard

IEC 61089 Round wire concentric lay overhead electrical stranded conductors

ASTM B399 Standard specification for concentric-lay-stranded aluminum-alloy 6201-T81 conductors

ASTM B231 Standard specification for concentric-lay-stranded aluminum 1350 conductors

ASTM B232 Standard specification for concentric-lay-stranded aluminum conductors, coated steel reinforced (ACSR)

ASTM B416 Standard specification for concentric-lay-stranded aluminum-clad steel conductors

ASTM B549 Standard specification for concentric-lay-stranded aluminum conductors, aluminum clad steel reinforced (ACSR/AW)



3 CONSTRUCTURE AND SPECIFICATIONS FOR ACSR

3.1. Conductor Structure-240/40mm2

3.2. Conductor Technical Structure

Parameter Unit Value

Structure

Center: Steel wire

Nos./mm

1/2.675

Layer 1: Steel wire 6/2.675

Layer 2: Aluminum wire 10/3.439

Layer 3: Aluminum wire 16/3.439

Standard / IEC 61089/60888/60889

Stranding direction of outer layer Direction Right

Conductor diameter mm 21.78

Cross section

Steel wire mm2 39.34

Al wire mm2 241.5

Total mm2 280.84

Conductor weight without grease kg/km 976.5

Grease weight (steel core greased) kg/km 6.86

Total weight kg/km 983.36

Rated tensile strength kN 87.083

Modulus of Elasticity GPa 81.975

Coefficient of linear expansion 10-6

/℃ 18.95

Max. DC Resistance at 20℃ Ω/km 0.1196

Lay ratio Aluminum layer

/

10 wire layer 10-16

16 wire layer 10-14

Steel layer 6 wire layer:16-26

Drop point ℃ 100

St Wire

Al Wire

Grease



3.3. Properties of Aluminum wire (Before stranding)


Diameter and tolerance mm 3.439±0.04

Min. tensile strength

(before stranding/after stranding) MPa 159/151

Min elongation at fracture in 250mm % 1.9

Max. resistivity at 20℃ Ω·mm2/m 0.028264

3.4. Properties of Steel wire (Before stranding)


Diameter and tolerance mm 2.675±0.04

Min. tensile strength

(before stranding/after stranding) MPa 1269/1205

Min. tension at 1% elongation MPa 1160

Min elongation at fracture in 250mm % 1.0

Class of zinc coating / Class 1

Min. mass of zinc Coating g/m2 229

Note: All Sizes and Values are Nominal Values



4. TEST REQUIREMENTS FOR ACSR

ACSR shall be accordance with applicable standard of ACSR and requirements of customer. The

following test items shall be carried out according to corresponding reference.

No Item Reference

Tests for Steel wire

1 Dimensions IEC 60888

2 Tensile strength IEC 60888

3 Elongation IEC 60888

4 Wrapping IEC 60888

5 Mass of zinc IEC 60888

Tests for Aluminum wire


2 Tensile strength IEC 60889

3 Elongation IEC 60889

4 Wrapping IEC 60889

5 Resistivity test IEC 60889

Tests for Conductor


2 Lay ratio and direction of lay IEC 61089

3 Number and type of wires IEC 61089

4 Mass per unit length IEC 61089



5. PACKING AND DRUM FOR CONDUCTOR

The required marking shall be printed with a weather-proof material on the outsides of drum according

to customer’s requirement.

Cable Type

Drum

Length

(m)

Drum Dimensions Gross

Weight

(Approx)

kg

Drum

Type D

mm

d

mm

B

mm

b

mm

A

mm

ACSR

26/3.439+7/2.675 4200 2000 800 1100 900 105 4370

Iron-wo

oden

Note: The value “D” don’t contain the dimension of seal.

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