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AS 1746-1991

[Current]

Conductors — Bare overhead — Hard-drawn copper

Sets out requirements and tests necessary for homogeneous bare electrical conductors for overhead power transmission, and constructed of hard-drawn copper wires. A range of wire sizes and their properties are provided.
Published: 10/06/1991
Pages: 9
Table of contents
Cited references
Content history
Table of contents
Header
About this publication
PREFACE
1 SCOPE AND GENERAL
1.1 SCOPE
1.2 REFERENCED DOCUMENTS
1.3 DEFINITIONS
1.4 NOMENCLATURE
2 MATERIAL REQUIREMENTS AND WIRE PROPERTIES
2.1 GENERAL
2.2 MATERIAL
2.3 WIRE PROPERTIES
2.3.1 General
2.3.2 Copper wires
2.3.2.1 General
2.3.2.2 Density
2.3.2.3 Resistivity
2.3.2.4 Constant-mass temperature coefficient of resistance (α20)
2.3.2.5 Modulus of elasticity
2.3.2.6 Coefficient of linear expansion
3 CONDUCTOR REQUIREMENTS
3.1 CONSTRUCTION
3.1.1 General
3.2 JOINTS IN WIRES OF CONDUCTORS
3.2.1 General
3.2.2 Conductors containing seven wires
3.2.3 Conductors containing more than seven wires
3.3 LAY
3.3.1 Lay ratio
3.3.2 Direction of lay
3.4 STANDARD SIZES AND CALCULATED PROPERTIES OF CONDUCTORS
4 TESTS
4.1 TEST SPECIMENS
4.1.1 General
4.1.2 Routine tests
4.1.3 Special tests
4.2 MECHANICAL TESTS
4.2.1 Dimensions
4.2.2 Ultimate tensile stress test
4.2.3 Wrapping test
4.3 RESISTIVITY TEST
4.4 LAY RATIO TEST
4.5 PLACE OF TESTING
5 PACKING AND MARKING
5.1 PACKING
5.2 MARKING
5.3 CERTIFICATE OF COMPLIANCE
APPENDIX A
A1 GENERAL
A2 INCREASE IN LENGTH DUE TO STRANDING
A3 MASS OF CONDUCTOR
A4 CALCULATED BREAKING LOAD (CBL) OF CONDUCTOR
A5 EQUIVALENT ALUMINIUM AREA
A6 DIRECT CURRENT RESISTANCE OF CONDUCTOR
APPENDIX B
B1 COEFFICIENT OF LINEAR EXPANSION
B1.1 General
B2 MODULUS OF ELASTICITY
B2.1 General
B2.2 Calculation
APPENDIX C
C1 GENERAL
C2 ITEMS TO BE SPECIFIED BY THE PURCHASER
Cited references in this standard
IEC 468
Method of measurement of resistivity of metallic materials
[Current]
Metallic materials, Method 5: Wire — Simple torsion test
[Superseded]
Timber drums for insulated electric cables and bare conductors
[Superseded]
Drums for bare stranded conductors, Part 2: Metal drums
[Superseded]
Copper and copper alloys — Wire for electrical purposes
Content history
[Superseded]
DR 90062
AS 1746-1991 Rec:2016
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