ISO 19642-1:2019
(Main)Road vehicles — Automotive cables — Part 1: Vocabulary and design guidelines
Road vehicles — Automotive cables — Part 1: Vocabulary and design guidelines
This document defines terms in the field of cables applied in road vehicle general purpose applications, for use in the other parts of the ISO 19642 series.
Véhicules routiers — Cables automobiles — Partie 1: Vocabulaire et lignes directrices pour la conception
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Standards Content (Sample)
INTERNATIONAL ISO
STANDARD 19642-1
First edition
2019-04
Road vehicles — Automotive cables —
Part 1:
Vocabulary and design guidelines
Véhicules routiers — Cables automobiles —
Partie 1: Vocabulaire et lignes directrices pour la conception
Reference number
ISO 19642-1:2019(E)
©
ISO 2019
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ISO 19642-1:2019(E)
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ISO 19642-1:2019(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
3.1 Terms related to voltage rating . 1
3.2 Terms related to temperatures . 1
3.3 Terms related to cables . 2
Annex A (informative) Design guidelines for calculation of dimensions in multi-core cables .11
Annex B (informative) Recommended colour concentrations .20
Bibliography .21
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ISO 19642-1:2019(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
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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).
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.org/iso/foreword .html.
This document was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 32,
Electrical and electronic components and general system aspects.
A list of all parts in the ISO 19642 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www .iso .org/members .html.
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ISO 19642-1:2019(E)
Introduction
This document was prepared following a joint resolution to improve the general structure of the ISO
automotive electric cable standards. This new structure adds more clarity and, by defining a new
standard family, opens up the standard for future amendments.
Many other standards currently refer to ISO 6722-1, ISO 6722-2 and ISO 14572. These standards will stay
valid at least until the next scheduled systematic review and will later be replaced by the ISO 19642 series.
For new automotive cable projects, customers and suppliers are advised to use the ISO 19642 series.
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INTERNATIONAL STANDARD ISO 19642-1:2019(E)
Road vehicles — Automotive cables —
Part 1:
Vocabulary and design guidelines
1 Scope
This document defines terms in the field of cables applied in road vehicle general purpose applications,
for use in the other parts of the ISO 19642 series.
2 Normative references
There are no normative references in this document.
3 Terms and definitions
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https: //www .iso .org/obp
— IEC Electropedia: available at http: //www .electropedia .org/
3.1 Terms related to voltage rating
3.1.1
a.c. voltage
voltage in an alternating current circuit that also periodically reverses because the current has a
periodic function of time
Note 1 to entry: Whenever a.c. voltage is specified in the ISO 19642 series, the a.c. r.m.s. value shall be used.
3.1.2
60 V cable
cable (3.3.8) intended for use in road vehicle applications where the nominal system voltage is less than
or equal to 30 V a.c. or 60 V d.c.
3.1.3
900 V cable
cable (3.3.8) intended for use in road vehicle applications where the nominal system voltage is less than
or equal to 600 V a.c. or 900 V d.c.
3.1.4
1 500 V cable
cable (3.3.8) intended for use in road vehicle applications where the nominal system voltage is less than
or equal to 1 000 V a.c. or 1 500 V d.c.
3.2 Terms related to temperatures
3.2.1
temperature class rating
temperature range for safe operation of the cable (3.3.8) divided into eight temperature classes as
defined in Table 1
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ISO 19642-1:2019(E)
Table 1 — Temperature class rating
Temperature
Class Is equivalent to Class
°C
A T 1 −40 to 85
B T 2 −40 to 100
C T 3 −40 to 125
D T 4 −40 to 150
E T 5 −40 to 175
F T 6 −40 to 200
G T 7 −40 to 225
H T 8 −40 to 250
3.2.2
room temperature
RT
situation with a temperature of (23 ± 3) °C and a relative humidity (RH) of 45 % to 75 %
3.3 Terms related to cables
3.3.1
Percentage of International Annealed Copper Standard
%IACS
percentage of the volume resistivity of a metal when compared to 100 % of pure annealed copper
2
having a volume resistivity of 0,01724 Ω × mm /m at 20 °C as defined in IEC 60028
3.3.2
bare conductor
plain conductor
metal cable (3.3.8) conductor (3.3.12) in which the strand or strands are not coated
3.3.3
bedding layer
non-metallic covering applied (normally extruded) around the assembly of the cores (3.3.14) [and fillers
(3.3.17), if any] of a multi-conductor cable (3.3.30) to obtain a more circular outline
3.3.4
braid
covering formed from plain or plated metallic or non-metallic material
3.3.5
braid parameter
parameter of a braid (3.3.4) as defined in Table 2 and Table 3
Table 2 — Braid coverage formulae
Outside diameter Number of single strands Optical coverage,
Coverage
of the braid in one direction braid percentage
n md×
2
D = D + 4 × d B = (2 × B − B )× 100
G S ma=× B= O
2 h×cosα
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ISO 19642-1:2019(E)
Table 3 — Braid parameters
d mm Diameter of the single strand
D mm Diameter of the core (3.3.14) below the braid
S
D mm Outside diameter of the braid
G
a Number of strands in one carrier
m Number of single strands in one direction
n Number of carriers
h mm Lay length (3.3.28)
α ° Angle of lay, see Figure 1
B Coverage, proportion of the covered surface by strands in one
direction compared to the whole surface.
B % Optical coverage. Also called braid percentage. Proportion of
O
the covered surface by strands in both directions compared to
the whole surface.
Note 1 to entry: A braid is formed by a number of single strands which are grouped into carriers and applied to
the cable (3.3.8) surface in two different directions (left and right or S and Z) in a form that each carrier of one
direction is alternatively above and below the adjacent carrier of the other direction.
Note 2 to entry: See Figure 1.
Figure 1 — Angle of lay
3.3.6
bunched conductor
conductor (3.3.12) in which individual strands are assembled together in helical formation, all in the
same direction and with the same length of lay
3.3.7
bunching loss
f
b
ratio of conductor (3.3.12) resistance before and after the bunching process of stranded conductors
(3.3.40)
Note 1 to entry: The factor, f , is derived by the formula:
b
mR××κ
mean mean
f =
b
1000×ρ
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ISO 19642-1:2019(E)
where
2
κ is the conductivity of the used conductor material in Sm/mm ;
3
ρ is the density of the conductor material in kg/dm = kg/l;
m is the mean of measured conductor mass in g/m;
mean
R is the mean of measured conductor resistance at 20 °C mΩ/m.
mean
3.3.8
cable
single or multi-core wire (3.3.42)
Note 1 to entry: Cable dimension descriptions are shown in Figure 2.
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ISO 19642-1:2019(E)
Key
a conductor (3.3.12) diameter 2 conductor insulation (3.3.13)
b core (3.3.14) diameter 3 inner covering (3.3.22)
c twisted core diameter 4 filler (3.3.17)
d diameter under sheath (3.3.38) 5 drain wire (3.3.42)
e outside cable diameter 6 foil
f wall thickness sheath 7 screen (3.3.36)
1 conductor 8 sheath
Figure 2 — Cable dimension descriptions
3.3.9
cable family
group with multiple conductor (3.3.12) sizes having the same conductor strand coating, insulation
(3.3.25) formulation, and wall thickness type
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ISO 19642-1:2019(E)
3.3.10
colour code
code of a cable (3.3.8) colour to make it visually distinguishable from the others
Note 1 to entry: The recommended colours are listed in Table 4.
Note 2 to entry: Annex B indicates recommended colour concentrations for the colours listed in Table 4.
Table 4 — Recommended colours
Colour Code
Black BK
Blue BU
Brown BN
Green GN
Orange OG
Red RD
Violet (Purple) VT
White WH
Yellow YE
NOTE Other colours can be used based on agreement between customer and supplier (see IEC 60757).
3.3.11
compressed conductor
stranded conductor (3.3.40) in which the interstices between the strands have been reduced by
mechanical compression into a circular shape with reduced outside diameter
Note 1 to entry: See Figure 3.
a) Compressed conductor b) Compressed conductor with insulation
(3.3.25) only
Figure 3 — Compressed conductor
3.3.12
conductor
one or multitude of plain, coated or cladded electrically conductive strands
3.3.13
conductor insulation
dielectric material applied on a conductor (3.3.12)
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ISO 19642-1:2019(E)
3.3.14
core
insulated conductor (3.3.12) assembly comprising a conductor with its own insulation (3.3.25) [and
screens (3.3.36), if any]
3.3.15
cross-sectional area
CSA
calculated or measured area of the conductor (3.3.12)
3.3.16
drain wire
continuity wire
un-insulated or conductive coated conductor (3.3.12) laid in contact with a screen (3.3.36) or a shield
(3.3.36)
3.3.17
filler
component used to fill the interstices between the cores (3.3.14) or fill a void for roundness of a multi-
conductor cable (3.3.30)
3.3.18
flexibility
property of a cable (3.3.8) that allows for bending under the influence of an outside force
3.3.19
flexible conductor
metallic conductor (3.3.12) built from a multitude of single stranded wires (3.3.42)
3.3.20
flex life
property of a cable (3.3.8) to withstand repeated bending
3.3.21
general purpose cable
cable (3.3.8) meeting basic requirements for general automotive applications
3.3.22
inner covering
non-metallic covering which surrounds the assembly of the cores (3.3.14) [and fillers (3.3.17), if any] of a
multi-conductor cable (3.3.30) and over which the protective covering is applied
3.3.23
inner sheath
inner jacket
non-metallic sheath (3.3.38) generally applied under a metallic sheath, reinforcement or armour
3.3.24
insulated cable
assembly consisting of:
— one or more cores (3.3.14),
— their individual covering(s) (if any),
— assembly protection (if any),
— protective covering(s) (if any).
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ISO 19642-1:2019(E)
3.3.25
insulation
set of insulating materials incorporated on a conductor (3.3.12) or screen (3.3.36) with a specific
function of insulating and/or protecting the conductive elements
3.3.26
ISO conductor size
nominal value (3.3.32) of the ISO wire (3.3.42) used as a reference in this document
3.3.27
lay direction
direction
...
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