ISO 6722-2:2013
(Main)Road vehicles — 60 V and 600 V single-core cables — Part 2: Dimensions, test methods and requirements for aluminium conductor cables
Road vehicles — 60 V and 600 V single-core cables — Part 2: Dimensions, test methods and requirements for aluminium conductor cables
ISO 6722-2:2013 specifies the dimensions, test methods, and requirements for single-core 60 V cables intended for use in road vehicle applications where the nominal system voltage is ≤ 60 V d.c. or 25 V a.c. It also specifies additional test methods and/or requirements for 600 V cables intended for use in road vehicle applications, where the nominal system voltage is from > 60 V d.c. or 25 V a.c. to ≤ 600 V d.c. or 600 V a.c. It also applies to individual cores in multi-core cables. ISO 6722-2:2013 specifies requirements for aluminium conductor cables.
Véhicules routiers — Câbles monoconducteurs de 60 V et 600 V — Partie 2: Méthodes d'essai des dimensions et exigences pour les câbles conducteurs en aluminium
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Standards Content (Sample)
INTERNATIONAL ISO
STANDARD 6722-2
Fourth edition
2013-12-01
Road vehicles — 60 V and 600 V
single-core cables —
Part 2:
Dimensions, test methods and
requirements for aluminium
conductor cables
Véhicules routiers — Câbles monoconducteurs de 60 V et 600 V —
Partie 2: Méthodes d’essai des dimensions et exigences pour les câbles
conducteurs en aluminium
Reference number
ISO 6722-2:2013(E)
©
ISO 2013
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ISO 6722-2:2013(E)
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ii © ISO 2013 – All rights reserved
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ISO 6722-2:2013(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 General . 1
4.1 Safety concerns . 1
4.2 Temperature classes . 2
4.3 Conductors . 2
4.4 Tests . 2
4.5 General test conditions . 3
4.6 Ovens . 3
4.7 Representative conductor sizes for testing . 4
4.8 Recommended colours. 4
5 Tests . 4
5.1 Outside cable diameter . 4
5.2 Insulation thickness. 5
5.3 Conductor diameter and cross-sectional area . 6
5.4 Conductor resistance . 8
5.5 Withstand voltage . 9
5.6 Insulation faults . 9
5.7 Insulation volume resistivity . 9
5.8 Pressure test at high temperature .10
5.9 Strip force .10
5.10 Low temperature winding .10
5.11 Cold impact .10
5.12 Abrasion test .10
5.13 Long-term heat ageing, 3 000 h .10
5.14 Short-term heat ageing, 240 h .10
5.15 Thermal overload .10
5.16 Shrinkage by heat .10
5.17 Resistance to chemicals .10
5.18 Durability of cable marking .10
5.19 Resistance to ozone .10
5.20 Resistance to hot water .11
5.21 Temperature and humidity cycling .11
5.22 Resistance to flame propagation .11
Annex A (informative) Conductor sizes and cable dimensions.12
Annex B (normative) Determination of temperature coefficients .14
Bibliography .16
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ISO 6722-2:2013(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the meaning of ISO specific terms and expressions related to conformity
assessment, as well as information about ISO’s adherence to the WTO principles in the Technical Barriers
to Trade (TBT) see the following URL: Foreword - Supplementary information
The committee responsible for this document is ISO/TC 22, Road vehicles, Subcommittee SC 3, Electrical
and electronic equipment.
This fourth edition of ISO 6722-2 cancels and replaces ISO 6722:2006.
ISO 6722 consists of the following parts, under the general title Road vehicles — 60 V and 600 V single-
core cables:
— Part 1: Dimensions, test methods and requirements for copper conductor cables
— Part 2: Dimensions, test methods and requirements for aluminium conductor cables
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ISO 6722-2:2013(E)
Introduction
ISO 6722 deals with single-core cables, with copper conductor cables covered in ISO 6722-1 and
aluminium conductor cables covered in this part of ISO 6722. The performance of aluminium conductor
cables is, in general, not to be expected to be the same as the performance of copper conductor cables in
a one-to-one comparison basis.
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INTERNATIONAL STANDARD ISO 6722-2:2013(E)
Road vehicles — 60 V and 600 V single-core cables —
Part 2:
Dimensions, test methods and requirements for
aluminium conductor cables
WARNING — The use of this part of ISO 6722 may involve hazardous materials, operations, and
equipment. This part of ISO 6722 does not purport to address all of the safety concerns, if any,
associated with its use. It is the responsibility of the user of this part of ISO 6722 to establish
appropriate safety practices and determine the applicability of regulatory limitations prior to
use.
1 Scope
This part of ISO 6722 specifies the dimensions, test methods, and requirements for single-core 60 V
cables intended for use in road vehicle applications where the nominal system voltage is ≤ 60 V d.c. or
25 V a.c. It also specifies additional test methods and/or requirements for 600 V cables intended for use
in road vehicle applications, where the nominal system voltage is from > 60 V d.c. or 25 V a.c. to ≤ 600 V
d.c. or 600 V a.c. It also applies to individual cores in multi-core cables.
This part of ISO 6722 specifies requirements for aluminium conductor cables.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
ISO 6722-1, Road vehicles — 60 V and 600 V single-core cables — Part 1: Dimensions, test methods and
requirements for copper conductor cables
ISO 6892-1, Metallic materials — Tensile testing — Part 1: Method of test at room temperature
EN 573-1, Aluminium and aluminium alloys – Chemical composition and form of wrought products – Part 1:
Numerical designation system
EN 573-3:2009, Aluminium and aluminium alloys – Chemical composition and form of wrought products –
Part 3: Chemical composition and form of products
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 6722-1 apply.
NOTE Whenever a.c. voltage is specified throughout this part of ISO 6722, the a.c. rms value shall be used.
4 General
4.1 Safety concerns
See “WARNING” at the beginning of this part of ISO 6722.
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ISO 6722-2:2013(E)
4.2 Temperature classes
Temperature classes are defined in Table 1.
Table 1 — Temperature class rating
Class Temperature
A −40 °C to 85 °C
B −40 °C to 100 °C
C −40 °C to 125 °C
D −40 °C to 150 °C
E −40 °C to 175 °C
F −40 °C to 200 °C
4.3 Conductors
The conductors shall consist of annealed or annealed compressed/compacted aluminium, aluminium
alloy, or copper-cladded aluminium strands. The specifications for the conductors shall be according to
Table 2 and shall be completed by material specifications. Elongation requirements shall be established
by the agreement between the customer and the supplier. The finished cable shall meet the resistance
requirements of Table 5 for all conductors.
The individual strands of the aluminium conductor shall be manufactured per 1 000 series aluminium,
pursuant to EN 573-1. The chemical composition shall follow EN 573-3:2009, Table 1.
NOTE Examples of strandings are shown in Table A.1. These strandings highlight examples of conceptual
configurations and are not intended to reflect any preferred constructions. Other stranding configurations may
be used provided they meet the requirements specified and are agreed upon by the customer and the supplier.
Table 2 — Characteristics of individual single strand wire after annealing
a,b a
Tensile strength Elongation at break Conductivity
Rm A κ
C 20
2
MPa % Sm/mm
70 to 120 ≥16 ≥35,5
c,d c,d d
90 to 140 ≥8 ≥33,5
a
Determined pursuant to ISO 6892-1, (Reference [2]).
b
Measured at clamping length of 200 mm.
c
Not applicable for compressed conductors. The tensile strength, elongation, and chemical
composition requirements shall be established by the agreement between the customer and
the supplier.
d
Additional aluminium alloys may be used. The conductivity, tensile strength, elongation
requirements, and chemical composition shall be established by the agreement between the
customer and the supplier.
4.4 Tests
The cables shall be submitted to tests as specified in Table 3.
Unintended direct contact of aluminium wire with any other metal shall not occur with any of the test
methods.
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ISO 6722-2:2013(E)
4.5 General test conditions
If not otherwise specified, the device under test (DUT) shall be preconditioned for at least 16 h at a
room temperature (RT) of (23 ± 5) °C and a relative humidity (RH) of 45 % to 75 %. Unless otherwise
specified, all tests other than “in-process” tests shall be conducted at these conditions.
Where no tolerance is specified, all values shall be considered to be approximate.
When a.c. tests are performed, these shall be carried out at 50 Hz or 60 Hz. Applications at higher
frequencies may require additional testing.
4.6 Ovens
An oven with air exchange, either natural or by pressure, should be used. The air shall enter the oven in
such a way that it flows over the surface of the test pieces and leaves near the top of the oven. The oven
shall have not less than 8 and not more than 20 complete air changes per hour at the specified ageing
temperature.
Forced air circulation, e.g. by a fan, inside the oven may be used. However, in case of dispute, an oven
without forced air circulation shall be used.
Table 3 — Tests
c
Mandatory If required
Subclause Test description
a b b
In-process Initial Periodic Initial Periodic
Dimensions
5.1 Outside cable diameter – X X – –
5.2 Insulation thickness – X X – –
Conductor diameter and
5.3 – X X X X
cross-sectional area
Electrical characteristics
5.4 Conductor resistance – X X – –
d d
5.5 Withstand voltage – X X – –
d
5.6 Insulation faults X – – – –
5.7 Insulation volume resistivity – – – X X
Mechanical characteristics
5.8 Pressure test at high temperature – X X – –
5.9 Strip force – – – X X
Low temperature characteris-
tics
5.10 Winding – X X – –
5.11 Impact – – – X X
e e
5.12 Resistance to abrasion – X X – –
Heat ageing
5.13 Long term ageing, 3 000 h – X – – –
5.14 Short-term ageing, 240 h – X X – –
5.15 Thermal overload – – – X X
5.16 Shrinkage by heat – X X – –
Resistance to chemicals
f,g f,g
5.17 Fluid compatibility – X – X –
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ISO 6722-2:2013(E)
Table 3 (continued)
c
Mandatory If required
Subclause Test description
a b b
In-process Initial Periodic Initial Periodic
g g
5.18 Durability of cable marking – – – X X
g
5.19 Resistance to ozone
...
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