ISO 13063-3:2022
(Main)Electrically propelled mopeds and motorcycles — Safety specifications — Part 3: Electrical safety
Electrically propelled mopeds and motorcycles — Safety specifications — Part 3: Electrical safety
This document specifies electric safety requirements for protection against electric shock and thermal incidents of electric propulsion systems and conductively connected auxiliary electric systems of-electrically propelled mopeds and motorcycles when used in normal conditions. It is applicable to a maximum working voltage of the on-board electrical circuit up to 1 000 V alternating current (a.c.) or 1 500 V direct current (d.c.). This document does not provide comprehensive safety information for manufacturing, maintenance and repair personnel. NOTE Requirements for conductive connections of electrically propelled mopeds and motorcycles to an external electric power supply are described in ISO 18246.
Cyclomoteurs et motocycles à propulsion électrique — Spécifications de sécurité — Partie 3: Sécurité électrique
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Standards Content (Sample)
INTERNATIONAL ISO
STANDARD 13063-3
First edition
2022-07
Electrically propelled mopeds and
motorcycles — Safety specifications —
Part 3:
Electrical safety
Cyclomoteurs et motocycles à propulsion électrique — Spécifications
de sécurité —
Partie 3: Sécurité électrique
Reference number
ISO 13063-3:2022(E)
© ISO 2022
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ISO 13063-3:2022(E)
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ISO 13063-3:2022(E)
Contents Page
FOREWORD .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Abbreviated terms . 7
5 Voltage classes .7
6 General requirements . 8
6.1 Environmental and operational conditions . 8
6.2 Marking . 8
6.2.1 Marking of voltage class B electric components . 8
6.2.2 Marking of voltage class B wiring . 8
7 Requirements for protection against electric shock . 8
7.1 General requirements . 8
7.1.1 General requirements for connected sections of a circuit . 8
7.1.2 General requirements for voltage class B . 9
7.1.3 Requirements for voltage class A . 9
7.1.4 Requirements of voltage class A power cables and conduits. 10
7.2 Basic protection . 10
7.3 Fault protection and additional measures . 10
7.3.1 Equipotential bonding . 10
7.3.2 Isolation resistance . 11
7.3.3 Provisions for capacitive coupling and capacitive discharge .12
7.3.4 Alternative electrical or mechanical measures .12
7.3.5 De-energization . 13
7.3.6 Provision for chassis-connected voltage class B circuit .13
7.4 General requirements for protective provisions . 13
7.4.1 General .13
7.4.2 Requirements for insulation of voltage class B .13
7.4.3 Requirements of protective barrier and protective enclosures of voltage
class B electric components . 14
7.5 Requirements for connectors . 14
7.6 Insulation coordination . 15
7.7 Alternative approach for protection against electric shock . 15
8 Protection against thermal incidents .15
8.1 Overload protection . 15
8.2 Short-circuit protection . 15
9 Requirements for vehicle power supply circuit .15
10 Owner’s guide manual .15
11 Test procedures .16
11.1 General . 16
11.2 Continuity test for equipotential bonding . 16
11.3 Isolation resistance measurements for voltage class B electric circuits . 16
11.3.1 Preconditioning and conditioning . 16
11.3.2 Isolation resistance measurements of the balance of electric circuits. 16
11.3.3 Isolation resistance measurement of the voltage class B electric power
sources . 17
11.3.4 Isolation resistance measurement of entire electric circuits. 19
11.4 Test for isolation resistance monitoring system . 19
11.5 Touch current. 19
11.6 Withstand voltage test .20
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ISO 13063-3:2022(E)
11.6.1 General .20
11.6.2 Preconditioning and conditioning . 20
11.6.3 Test procedure. 21
11.6.4 Test criteria . 21
11.7 Test method of voltage class A wiring . 21
11.7.1 Test method for the movable part of the voltage class A wiring . 21
11.7.2 Test method for withstand voltage . 21
Bibliography .23
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ISO 13063-3:2022(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 of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to
the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see
www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 38,
Motorcycles and mopeds.
This first edition of ISO 13063-3, together with ISO 13063-1 and ISO 13063-2, cancels and replaces
ISO 13063:2012, which has been technically revised.
The main changes are as follows:
— extension of protection against electric shock to all electric safety requirements;
— alignment of structure and requirements as possible with ISO 6469-3:2018;
— splitting the document into three documents which consist of the following parts, under the general
title Electrically propelled mopeds and motorcycles — Safety specifications:
— Part 1: On-board rechargeable energy storage system (RESS);
— Part 2: Vehicle operational safety;
— Part 3: Electrical safety;
— addition of specific requirements for capacitive discharge;
— new test specification for the isolation resistance monitoring system;
— new requirements and test for touch current; and
— the requirements for conductive connection to an external electric power supply can be covered by
ISO 18246.
A list of all parts in the ISO 13063 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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INTERNATIONAL STANDARD ISO 13063-3:2022(E)
Electrically propelled mopeds and motorcycles — Safety
specifications —
Part 3:
Electrical safety
1 Scope
This document specifies electric safety requirements for protection against electric shock and thermal
incidents of electric propulsion systems and conductively connected auxiliary electric systems of-
electrically propelled mopeds and motorcycles when used in normal conditions. It is applicable to a
maximum working voltage of the on-board electrical circuit up to 1 000 V alternating current (a.c.) or
1 500 V direct current (d.c.). This document does not provide comprehensive safety information for
manufacturing, maintenance and repair personnel.
NOTE Requirements for conductive connections of electrically propelled mopeds and motorcycles to an
external electric power supply are described in ISO 18246.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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 20653, Road vehicles — Degrees of protection (IP-code) — Protection of electrical equipment against
foreign objects, water and access
IEC 60227-1, Polyvinyl chloride insulated cables of rated voltages up to and including 450/750 V — Part 1:
General requirements
IEC 60245-1, Rubber insulated cables — Rated voltages up to and including 450/750 V — Part 1: General
requirements
IEC 60990:2016, Methods of measurement of touch current and protective conductor current
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
3.1
auxiliary electric system
vehicle system, other than the propulsion system (3.46), that operates on electric energy
[SOURCE: ISO 6469-3:2021, 3.1]
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ISO 13063-3:2022(E)
3.2
balance of electric circuit
remaining section of an electric circuit when all electric power sources that are energized (e.g. RESS
(3.23) and fuel cell stacks) are disconnected
[SOURCE: ISO 6469-3:2021, 3.2]
3.3
protective barrier
part providing protection against direct contact (3.9) from any usual direction of access
[SOURCE: IEC 60050-826:2004, 826-12-23, modified — Domain “” was removed.]
3.4
basic insulation
insulation of hazardous live parts (3.35) which provides basic protection (3.5)
Note 1 to entry: This concept does not apply to insulation used exclusively for functional purposes.
Note 2 to entry: Where insulation is not provided by solid insulation only, it is complemented with protective
barriers (3.3) or protective enclosures (3.15) to prevent access to live parts (3.19) in order to achieve basic
protection.
[SOURCE: IEC 60050-581:2008, 581-21-24, modified — “Note 2 to entry was added.]
3.5
basic protection
protection against electric shock (3.13) under fault-free conditions.
[SOURCE: IEC 60050-195:2021, 195-06-01, modified — "normal" was replaced by "fault-free".]
3.6
conductive part
part which can carry electric current
[SOURCE: IEC 60050-195:2021, 195-01-06]
3.7
conductor
conductive part (3.6) intended to carry a specified electric current
[SOURCE: IEC 60050-195:2021, 195-01-07]
3.8
creepage distance
shortest distance along the surface of a solid insulating material between two conductive parts (3.6)
[SOURCE: IEC 60050-151:2001, 151-15-50]
3.9
direct contact
electric contact of persons or animals with live parts (3.19)
[SOURCE: IEC 60050-826:2004, 826-12-03]
3.10
double insulation
insulation comprising both basic insulation (3.4) and supplementary insulation (3.25)
[SOURCE: IEC 60050-195:2021, 195-06-08]
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ISO 13063-3:2022(E)
3.11
electric chassis
conductive parts (3.6) of a vehicle that are electrically connected and whose potential is taken as
reference
3.12
electric drive
combination of traction motor, power electronics and their associated controls for the conversion of
electric to mechanical power and vice versa
[SOURCE: ISO 6469-3:2021, 3.13]
3.13
electric shock
physiological effect resulting from an electric current passing through a human body or animal body
[SOURCE: IEC 60050-826:2004, 826-12-01]
3.14
electrically propelled vehicle
vehicle with one or more electric drive(s) (3.12) for vehicle propulsion
[SOURCE: ISO 6469-3:2021, 3.15]
3.15
protective enclosure
electrical enclosure surrounding internal parts of equipment to prevent access to hazardous live parts
(3.35) from any direction
[SOURCE: IEC 60050-195:2021, 195-06-14, modified — Domain “” was removed.]
3.16
exposed conductive part
conductive part (3.6) of equipment which can be touched and which is not normally live, but which can
become live when basic insulation (3.4) fails
Note 1 to entry: A conductive part of electrical equipment which can become live only through contact with an
exposed conductive part which has become live is not considered to be an exposed conductive part itself.
[SOURCE: IEC 60050-442:1998, 442-01-21]
3.17
isolation resistance monitoring system
system that periodically or continuously monitors the isolation resistance (3.18) between live parts
(3.19) and the electric chassis (3.11)
[SOURCE: ISO 6469-3:2021, 3.24]
3.18
isolation resistance
insulation resistance
resistance between live parts (3.19) of an electric circuit and the electric chassis (3.11) as well as other
electric circuits which are insulated from this electric circuit
[SOURCE: ISO 6469-3:2021, 3.23]
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ISO 13063-3:2022(E)
3.19
live part
conductor (3.7) or conductive part (3.6) intended to be energized in normal use, but by convention not
the electric chassis (3.11)
[SOURCE: IEC 60050-442:1998, 442-01-40, modified — “including a neutral conductor” and Note were
removed, and "combined protective and neutral conductor (PEN)" was replaced by "electric chassis".]
3.20
maximum working voltage
highest value of AC voltage (rms) or of DC voltage that can occur under any normal operating conditions
according to the manufacturers’ specifications, disregarding transients and ripple
[SOURCE: ISO 6469-3:2021, 3.26]
3.21
equipotential bonding
provision of electric connections between conductive parts (3.6), intended to achieve equipotentiality
[SOURCE: IEC 60050-826:2004, 826-13-19]
3.22
degree of protection
IP
protection provided by an enclosure or barriers against access, foreign objects and/or water and
verified by standardized test methods in accordance with ISO 20653
[SOURCE: ISO 20653:2013, 3.2, modified — The term "IP" and the phrase “in accordance with ISO 20653”
were added.]
3.23
rechargeable energy storage system
RESS
rechargeable system that stores energy for delivery of electric energy for the electric drive (3.12)
EXAMPLE Battery, capacitor, flywheel.
[SOURCE: ISO 6469-3:2021, 3.31]
3.24
reinforced insulation
insulation of hazardous live parts (3.35) which provides protection against electric shock (3.13)
equivalent to double insulation (3.10)
Note 1 to entry: Reinforced insulation may comprise several layers that cannot be tested singly as basic insulation
(3.4) or supplementary insulation (3.25).
[SOURCE: IEC 60050-581:2008, 581-21-27]
3.25
supplementary insulation
independent insulation applied in addition to basic insulation (3.4) for fault protection (3.29)
[SOURCE: IEC 60050-195:2021, 195-06-07]
3.26
voltage class
classification of an electric component or circuit according to its maximum working voltage (3.20)
[SOURCE: ISO 6469-3:2021, 3.36]
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ISO 13063-3:2022(E)
3.27
wiring
system of wires providing electric circuits and including cables and connectors
3.28
service disconnect
device for deactivation of the electrical circuit when conducting checks and services of the vehicle, RESS
(3.23), etc.
3.29
fault protection
protection against electric shock (3.13) under single-fault conditions
[SOURCE: IEC 60050-195:2021, 195-06-02]
3.30
functional insulation
insulation between conductive parts (3.6), necessary for the proper functioning of the component
[SOURCE: IEC 60050-195:2021, 195-02-41, modified — "equipment" replaces "component".]
3.31
touch current
electric current passing through a human body or through livestock when it touches one or more
accessible parts of cables or equipment
[SOURCE: ISO 17409:2020, 3.57, modified — “cables” replaces “an installation”.]
3.32
vehicle power supply circuit
voltage class (3.26) B electric circuit which includes all parts that are conductively connected to the
vehicle inlet (3.33) [case B (3.40), case C (3.41)] or the plug (3.45) [case A (3.39)]
[SOURCE: ISO 6469-2:2022, 3.18, modified — “conductively” replaces “galvanically” and "and that is
operational when connected to an external electric power supply" was deleted.]
3.33
vehicle inlet
part of a vehicle coupler incorporated in, or fixed to, the electric vehicle
[SOURCE: IEC 62196-1:2014, 3.3.2, modified — "electric vehicle inlet" was deleted.]
3.34
removable RESS
RESS (3.23) that by design can be taken out from the vehicle by the vehicle user for off-board charging
and/or other operation
3.35
hazardous live part
live part (3.19) which, under certain conditions, can give a harmful electric shock (3.13)
Note 1 to entry: For guidance on harmful physiological effects see IEC 61140:2016.
[SOURCE: IEC 60050-195:2021, 195-06-05, modified —Note 1 to entry was replaced.]
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ISO 13063-3:2022(E)
3.36
specific voltage condition
condition that the maximum voltage of a conductively connected electric circuit between a DC live part
(3.19) and any other live part (DC or AC) is ≤ 30 V a.c. (rms) and ≤ 60 V d.c.
Note 1 to entry: When a DC live part of such an electric circuit is connected to chassis and the specific voltage
condition applies, the maximum voltage between any live part and the electric chassis (3.11) is ≤ 30 V a.c. (rms)
and ≤ 60 V d.c.
Note 2 to entry: For pulsating DC voltages (alternating voltages without change of polarity) the DC threshold is
applied.
3.37
chassis-connected electric circuit
electric circuit that is conductively connected to each other, where the DC part of this circuit is
connected to the electric chassis (3.11) and the specific voltage condition (3.36) is fulfilled
3.38
clearance
shortest distance in air between two conductive parts (3.6)
[SOURCE: IEC 60050-581:2008, 581-27-76]
3.39
case A
connection of an EV to the supply network with a plug (3.45) and cable permanently attached to the EV
[SOURCE: IEC 61851-1:2017, 3.1.10]
3.40
case B
connection of an EV to the AC supply network with a cable assembly detachable at both ends
[SOURCE: IEC 61851-1:2017, 3.1.11]
3.41
case C
connection of an EV to the AC supply network utilizing a cable and vehicle connector permanently
attached to the EV charging station
[SOURCE: IEC 61851-1:2017, 3.1.12]
3.42
conductively connected circuit
two electric circuits are considered conductively connected unless they are separated by at least basic
insulation (3.4)
[SOURCE: ISO/TR 8713:2019, 3.26]
3.43
overload protection
protection intended to operate in the event of overload on the protected section
[SOURCE: IEC 60050-448:1995, 448-14-31]
3.44
overcurrent protection
protection intended to operate when the current is in excess of a predetermined value
[SOURCE: IEC 60050-448:1995, 448-14-26]
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ISO 13063-3:2022(E)
3.45
plug
accessory having contacts designed to engage with the contacts of a socket-outlet, also incorporating
means for the electrical connection and mechanical retention of flexible cables or cords
[SOURCE: IEC 61851-1:2017, 3.5.9]
3.46
propulsion system
combination of power source and powertrain for vehicle propulsion
[SOURCE: ISO 6469-2:2022, 3.12]
4 Abbreviated terms
AC alternating current (adjective)
a.c. alternating current (noun)
DC direct current (adjective)
d.c. direct current (noun)
rms root mean square
RESS rechargeable energy storage system
EV electrically propelled vehicle
DUT device under test
SPD surge protective device
RFI radio frequency interference
IEC International Electrotechnical Commission
ISO International Organization for Standardization
5 Voltage classes
Depending on its maximum working voltage U, an electric circuit, a section of a circuit or an electric
component belongs to the voltage classes specified in Table 1. Voltage class A is specified with maximum
working voltage of ≤30 V a.c. (rms) or ≤60 V d.c., respectively.
Voltage class B is specified with maximum working voltage between (> 30 and ≤ 1 000) V a.c. (rms) or (>
60 and ≤ 1 500) V d.c., respectively.
Table 1 — Voltage classes
Voltage class Maximum working voltage
V (DC) V (AC) (rms value)
A 0 < U ≤ 60 0 < U ≤ 30
B 60 < U ≤ 1 500 30 < U ≤ 1 000
NOTE The values 60 V d.c. and 30 V a.c. are selected taking into account humid weather
conditions.
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ISO 13063-3:2022(E)
6 General requirements
6.1 Environmental and operational conditions
The requirements given in this document shall be met across the range of environmental and
operational conditions for which the electrically propelled vehicle is designed to operate, as specified
by the vehicle manufacturer.
NOTE See the ISO 16750 series, ISO 21498-1 and the ISO 19453 series for guidance.
6.2 Marking
6.2.1 Marking of voltage class B electric components
The symbol ISO 7010–W012 shown in Figure 1 shall be visible on protective barriers and protective
enclosures, which, when removed, expose hazardous live parts of voltage class B electric circuits.
Accessibility and removability of protective barriers and protective enclosures should be considered
when evaluating the requirement for the symbol.
The symbol may be embossed or engraved in accordance with Figure 1. In this case colour is not
required.
For a protective enclosure consisting of several parts, one symbol is sufficient when visibility of the
symbol is given.
Figure 1 — Symbol ISO 7010–W012
6.2.2 Marking of voltage class B wiring
The outer covering of cables and harness for voltage class B electric circuits not within protective
enclosures or behind protective barriers shall be marked with orange colour.
Voltage class B connectors may be identified by the harnesses to which the connector is attached.
NOTE Specifications of the orange colour are given, for example in standards in the US (8.75R5.75/12.5) and
in Japan (8.8R5.8/12.5), according to the Munsell colour system.
7 Requirements for protection against electric shock
7.1 General requirements
7.1.1 General requirements for connected sections of a circuit
If not sp
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