ISO 14572:2011
(Main)Road vehicles — Round, sheathed, 60 V and 600 V screened and unscreened single- or multi-core cables — Test methods and requirements for basic- and high-performance cables
Road vehicles — Round, sheathed, 60 V and 600 V screened and unscreened single- or multi-core cables — Test methods and requirements for basic- and high-performance cables
ISO 14572:2011 specifies test methods and requirements for basic- and high-performance round, single- or multi-core sheathed 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 > (60 V d.c. or 25 V a.c.) and ≤ (600 V d.c. or 600 V a.c.).
Véhicules routiers — Câbles monoconducteurs ou multiconducteurs ronds, sous gaine, blindés et non blindés de 60 V et 600 V — Méthodes d'essai et exigences pour les câbles à performances de base et à hautes performances
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Standards Content (Sample)
INTERNATIONAL ISO
STANDARD 14572
Third edition
2011-10-01
Road vehicles — Round, sheathed, 60 V
and 600 V screened and unscreened
single- or multi-core cables — Test
methods and requirements for basic- and
high-performance cables
Véhicules routiers — Câbles monoconducteurs ou multiconducteurs
ronds, sous gaine, blindés et non blindés de 60 V et 600 V — Méthodes
d’essai et exigences pour les câbles à performances de base et à
hautes performances
Reference number
ISO 14572:2011(E)
©
ISO 2011
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ISO 14572:2011(E)
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ii © ISO 2011 – All rights reserved
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ISO 14572:2011(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 General requirements . 2
4.1 Safety concerns . 2
4.2 Rating of cables . 2
4.3 600 volt cables . 2
4.4 Tests . 2
4.5 General test conditions . 3
4.6 Ovens . 3
4.7 Visual appearance . 3
5 Tests and requirements . 4
5.1 Outside cable diameter . 4
5.2 Ovality of sheath . 4
5.3 Thickness of sheath . 5
5.4 Electrical continuity . 5
5.5 Withstand voltage. 5
5.6 Screening effectiveness . 6
5.7 Pressure test at high temperature . 7
5.8 Adhesion of sheath . 8
5.9 Cyclic bending . 8
5.10 Winding at low temperature. 9
5.11 Impact at low temperature .10
5.12 Resistance to abrasion . 11
5.13 Long-term heat ageing, 3 000 h .12
5.14 Short-term heat ageing, 240 h .12
5.15 Thermal overload .13
5.16 Shrinkage by heat of sheath .13
5.17 Fluid compatibility .14
5.18 Durability of sheath marking .14
5.19 Resistance to ozone .14
5.20 Temperature and humidity cycling .15
5.21 Resistance to flame propagation .15
5.22 Artificial weathering .15
Annex A (informative) Source for reference material .17
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ISO 14572:2011(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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
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.
ISO 14572 was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 3, Electrical
and electronic equipment.
This third edition cancels and replaces the second edition (ISO 14572:2006), which has been technically revised.
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INTERNATIONAL STANDARD ISO 14572:2011(E)
Road vehicles — Round, sheathed, 60 V and 600 V screened
and unscreened single- or multi-core cables — Test methods
and requirements for basic- and high-performance cables
WARNING — The use of this International Standard may involve hazardous materials, operations, and
equipment. This International Standard 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 International Standard to establish
appropriate safety practices and determine the applicability of regulatory limitations prior to use.
1 Scope
This International Standard specifies test methods and requirements for basic- and high-performance round,
single- or multi-core sheathed 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 > (60 V d.c. or
25 V a.c.) and ≤ (600 V d.c. or 600 V a.c.).
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced document
(including any amendments) applies.
ISO 4892-2, Plastics — Methods of exposure to laboratory light sources — Part 2: Xenon-arc lamps
ISO 6722-1, Road vehicles — 60 V and 600 V single-core cables — Part 1: Dimensions, test methods and
requirements for copper conductor cables
IEC 60811-1-1, Common test methods for insulating and sheathing materials of electric cables and optical
cables — Part 1-1: Methods for general application — Measurement of thickness and overall dimensions —
Tests for determining the mechanical properties
IEC 62153-4-3, Metallic communication cable test methods — Part 4-3: Electromagnetic compatibility (EMC) —
Surface transfer impedance — Triaxial method
IEC 62153-4-5, Metallic communication cable test methods — Part 4-5: Electromagnetic compatibility (EMC) —
Coupling or screening attenuation — Absorbing clamp method
IEC 62153-4-6, Metallic communication cable test methods — Part 4-6: Electromagnetic compatibility (EMC) —
Surface transfer impedance — Line injection method
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
NOTE Whenever a.c. voltage is specified throughout this International Standard, a.c. rms value shall be used.
3.1
basic-performance (cable)
(cable) meeting basic requirements for general automotive applications
3.2
core
assembly comprising a conductor with its own insulation (and screens if any)
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ISO 14572:2011(E)
3.3
high-performance (cable)
(cable) meeting all basic requirements plus enhanced mechanical and/or environmental performance (as
defined by the customer)
3.4
screen
conductive material intended to reduce the penetration and/or radiation of a varying electromagnetic field into
an assigned region
3.5
unscreened
without a screen
3.6
60 volt (V) cable
cable intended for use in road vehicle applications where the nominal system voltage is equal to or less than
(60 V d.c. or 25 V a.c.)
3.7
600 volt (V) cable
cable intended for use in road vehicle applications where the nominal system voltage greater than (60 V d.c. or
25 V a.c.) and less than or equal to (600 V d.c. or 600 V a.c.)
3.8
nominal (value)
suitable approximate value used to designate or identify a component
4 General requirements
4.1 Safety concerns
See “Warning” at the beginning of this International Standard.
4.2 Rating of cables
4.2.1 Voltage rating
The voltage rating is established by the rating of the cores. 60 V and 600 V cores shall not be mixed in the
same multi-core cable.
4.2.2 Temperature class rating
The temperature class rating is established by the rating(s) of the cores and sheath. The rating of the cable shall be
equal to the lowest rating of the individual cores and sheath. For details on temperature classes see ISO 6722-1.
4.3 600 volt cables
Special care shall be taken for cables used for voltages above 60 V d.c. to protect them from mechanical stress
to avoid shock hazard.
The 600 V cable sheath shall be visually identified with permanent orange colour.
4.4 Tests
The cables shall be subjected to the tests as specified in Table 1.
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ISO 14572:2011(E)
Table 1 — Tests
c
Certification If required
In-progress
Clause Test description
a
b b
tests
Initial Periodic Initial Periodic
4.7 Visual appearance — X X — —
5.1 Outside cable diameter — X X — —
5.2 Ovality of sheath — — — X X
5.3 Thickness of sheath — X X — —
5.4 Electrical continuity X X X — —
5.5 Withstand voltage X X X — —
5.6 Screening effectiveness — — — X X
5.7 Pressure test at high temperature — X X — —
5.8 Adhesion of sheath — — — X X
5.9 Cyclic bending — — — X —
5.10 Winding at low temperature — X X — —
5.11 Impact at low temperature — — — X X
5.12 Resistance to abrasion — — — X X
5.13 Long-term heat ageing, 3 000 h — X — — —
5.14 Short-term heat ageing, 240 h — X X — —
5.15 Thermal overload — — — X X
5.16 Shrinkage by heat of sheath — X X — —
5.17 Fluid compatibility Note Note
5.18 Durability of sheath marking — — — X X
5.19 Resistance to ozone — — — X —
5.20 Temperature and humidity cycling — — — X —
5.21 Resistance to flame propagation — X X — —
5.22 Artificial weathering — — — X —
NOTE Some fluids are for “certification” and others are “if required” (see 5.17 for details).
a
A test made on all cables during or after manufacture.
b
The frequency of periodic testing shall be established by agreement between customer and supplier.
c
The usage of “if required” tests shall be established by agreement between customer and supplier.
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-progress 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, they shall be at 50 Hz or 60 Hz. Applications at higher frequencies may require
additional testing.
4.6 Ovens
The procedure should be followed according to ISO 6722-1.
4.7 Visual appearance
On visual examination, the sheath shall be smooth, even and free from surface imperfections such as lumps,
voids, particles, or other imperfections.
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ISO 14572:2011(E)
5 Tests and requirements
5.1 Outside cable diameter
5.1.1 Purpose
This test is intended to verify that the cable outside diameter is within the required tolerances to fit seal and
harness dimension requirements.
Due to the variety of constructions, the requirements for dimensions shall be established by agreement between
customer and supplier.
5.1.2 Test
Perform the test according to ISO 6722-1.
5.1.3 Requirement
The outside cable diameter shall be within the limits established by agreement between customer and supplier.
5.2 Ovality of sheath
5.2.1 General test usage
The usage of this test shall be established by agreement between customer and supplier.
Due to the variety of constructions, the requirements for dimensions shall be established by agreement between
customer and supplier.
5.2.2 Purpose
This test is intended to verify that the cable ovality is within the required tolerances to fit seal and harness
dimension requirements.
5.2.3 Test
Measure the maximum (d ) and the minimum (d ) outside cable diameters according to ISO 6722-1. Then
max min
calculate the ovality, O, in Equation (1) as follows:
(d −d )
max min
O = × 100 (1)
0,5 × (d +d )
max min
where
O is the amount the sheath is “out of round” in %;
d is the maximum outside cable diameter in mm;
max
d is the minimum outside cable diameter in mm.
min
5.2.4 Requirement
Ovality shall be within the limits established by agreement between customer and supplier.
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ISO 14572:2011(E)
5.3 Thickness of sheath
5.3.1 Purpose
This test is intended to verify that the cable sheath thickness is within the required tolerances.
Due to the variety of constructions, the requirements for dimensions shall be established by agreement between
customer and supplier.
5.3.2 Test
Perform the test according to “insulation thickness” as specified in ISO 6722-1.
5.3.3 Requirement
The thickness of sheath shall be within the limits established by agreement between customer and supplier.
5.4 Electrical continuity
5.4.1 Test sample
Remove 100 mm of sheath from each end of a complete cable and 25 mm of insulation from each end of the cores.
5.4.2 Test
Use an appropriate source connected in series with an indicator such as an ohmmeter, light, or buzzer.
Connect the apparatus to one of the cores. Repeat the procedure until all cores have been tested. If a screen is
present, test the continuity using the same procedure for a core. As an alternative, all of the cores shall be tested at
once by connecting them in series. Take care to select a current which shall not damage the individual conductors.
5.4.3 Requirement
The indicator shall show continuity.
5.5 Withstand voltage
5.5.1 General
Unscreened single-core cables shall be tested according to ISO 6722-1.
5.5.2 Purpose
This test is intended to find electrical defects of the final product in accordance with this International Standard.
5.5.3 Test sample
Remove 100 mm of sheath from one end of the cable and remove 25 mm of insulation from each core. For the
test, connect the conductors of all the cores together at one end, except for the core being tested. If a screen
is present, it shall be connected in the same manner as a core.
5.5.4 Test
Use a 50 Hz or 60 Hz voltage source capable of applying 2 kV a.c. for a minimum of 3 s.
Apply 2 kV a.c. between the core to be tested and the remaining core(s) for a minimum of 3 s. Repeat
...
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