ISO 6469-3:2021

Electrically propelled road vehicles — Safety specifications — Part 3: Electrical safety

This document specifies electrical safety requirements for voltage class B electric circuits of electric propulsion systems and conductively connected auxiliary electric systems of electrically propelled road vehicles. It specifies electrical safety requirements for protection of persons against electric shock and thermal incidents. It does not provide comprehensive safety information for manufacturing, maintenance and repair personnel. NOTE 1 Electrical safety requirements for post-crash are described in ISO 6469-4. NOTE 2 Electrical safety requirements for conductive connections of electrically propelled road vehicles to an external electric power supply are described in ISO 17409. NOTE 3 Specific electrical safety requirements for magnetic field wireless power transfer between an external electric power supply and an electrically propelled vehicle are described in ISO 19363. NOTE 4 Electrical safety requirements for motorcycles and mopeds are described in the ISO 13063 series.

Véhicules routiers électriques — Spécifications de sécurité — Partie 3: Sécurité électrique

General Information

• Status: Published
• Publication Date: 27-Oct-2021
• ICS: 43.120 - Electric road vehicles
• Technical Committee: ISO/TC 22/SC 37 - Electrically propelled vehicles
• Drafting Committee: ISO/TC 22/SC 37/WG 1 - Safety aspects and terminology
• Current Stage: 9092 - International Standard to be revised
• Completion Date: 30-Aug-2024

Relations

• Revises: ISO 6469-3:2018/Amd 1:2020 - Electrically propelled road vehicles — Safety specifications — Part 3: Electrical safety — Amendment 1: Withstand voltage test for electric power sources
• Effective Date: 10-Dec-2022
• Revises: ISO 6469-3:2018 - Electrically propelled road vehicles — Safety specifications — Part 3: Electrical safety
• Effective Date: 10-Jul-2021

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 6469-3
Fourth edition
2021-10
Electrically propelled road vehicles —
Safety specifications —
Part 3:
Electrical safety
Véhicules routiers électriques — Spécifications de sécurité —
Partie 3: Sécurité électrique
Reference number
© ISO 2021
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii
Contents Page
Foreword .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Voltage classes .6
5 General requirements . 6
5.1 Environmental and operational requirements. 6
5.2 Marking . 7
5.2.1 Marking of voltage class B electric components . 7
5.2.2 Marking of voltage class B wiring . 7
6 Requirements for protection of persons against electric shock. 7
6.1 General requirements . 7
6.1.1 General requirements for connected sections of a circuit . 7
6.1.2 General requirements for voltage class B1 . 7
6.1.3 General requirements for voltage class B2 . 8
6.2 Basic protection . 8
6.3 Fault protection and additional measures . 8
6.3.1 Equipotential bonding . 8
6.3.2 Isolation resistance . 9
6.3.3 Provisions for capacitive coupling and capacitive discharge . 10
6.3.4 De-energization . 11
6.3.5 Alternative protection measures . 11
6.4 General requirements for protective provisions .12
6.4.1 General .12
6.4.2 Requirements for insulation .12
6.4.3 Requirements for protective barriers and protective enclosures .12
6.4.4 Requirements for connectors . 13
6.4.5 Insulation coordination. 13
6.5 Alternative approach for protection against electric shock .13
7 Protection against thermal incidents .13
7.1 Overload protection . 13
7.2 Short-circuit protection . .13
8 Requirements for vehicle power supply circuit .14
9 Owner's manual .14
10 Test procedures .14
10.1 General . 14
10.2 Continuity test for equipotential bonding . 14
10.3 Isolation resistance measurements for voltage class B2 electric circuits . 14
10.3.1 Preconditioning and conditioning . 14
10.3.2 Isolation resistance measurements of the balance of electric circuits.15
10.3.3 Isolation resistance measurement of the voltage class B2 electric power
sources .15
10.3.4 Isolation resistance measurement of entire electric circuits. 18
10.4 Test for isolation resistance monitoring system . 18
10.5 Touch current. 18
10.6 Withstand voltage test . 19
10.6.1 General . 19
10.6.2 Preconditioning and conditioning . 19
10.6.3 Test procedure. 19
10.6.4 Test criteria . 20
10.7 Withstand voltage test for electric power sources which are not de-energized .20
iii
10.7.1 General .20
10.7.2 Preconditioning and conditioning . 21
10.7.3 Test . . . 21
10.7.4 Test criteria . 23
Bibliography .24
iv
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 37,
Electrically propelled vehicles.
This fourth edition cancels and replaces the third edition (ISO 6469-3:2018), which has been technically
revised. It also incorporates the Amendment ISO 6469-3:2018/Amd.1:2020.
The main changes are as follows:
— changes from ISO 6469-3:2018/Amd.1:2020 were implemented,
— requirements for equipotential bonding were revised.
A list of all parts in the ISO 6469 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.
v
INTERNATIONAL STANDARD ISO 6469-3:2021(E)
Electrically propelled road vehicles — Safety
specifications —
Part 3:
Electrical safety
1 Scope
This document specifies electrical safety requirements for voltage class B electric circuits of electric
propulsion systems and conductively connected auxiliary electric systems of electrically propelled
road vehicles.
It specifies electrical safety requirements for protection of persons against electric shock and thermal
incidents.
It does not provide comprehensive safety information for manufacturing, maintenance and repair
personnel.
NOTE 1 Electrical safety requirements for post-crash are described in ISO 6469-4.
NOTE 2 Electrical safety requirements for conductive connections of electrically propelled road vehicles to an
external electric power supply are described in ISO 17409.
NOTE 3 Specific electrical safety requirements for magnetic field wireless power transfer between an external
electric power supply and an electrically propelled vehicle are described in ISO 19363.
NOTE 4 Electrical safety requirements for motorcycles and mopeds are described in the ISO 13063 series.
2 Normative references
The following document
...

INTERNATIONAL ISO
STANDARD 6469-3
Fourth edition
2021-10
Electrically propelled road vehicles —
Safety specifications —
Part 3:
Electrical safety
Véhicules routiers électriques — Spécifications de sécurité —
Partie 3: Sécurité électrique
Reference number
© ISO 2021
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii
Contents Page
Foreword .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Voltage classes .6
5 General requirements . 6
5.1 Environmental and operational requirements. 6
5.2 Marking . 7
5.2.1 Marking of voltage class B electric components . 7
5.2.2 Marking of voltage class B wiring . 7
6 Requirements for protection of persons against electric shock. 7
6.1 General requirements . 7
6.1.1 General requirements for connected sections of a circuit . 7
6.1.2 General requirements for voltage class B1 . 7
6.1.3 General requirements for voltage class B2 . 8
6.2 Basic protection . 8
6.3 Fault protection and additional measures . 8
6.3.1 Equipotential bonding . 8
6.3.2 Isolation resistance . 9
6.3.3 Provisions for capacitive coupling and capacitive discharge . 10
6.3.4 De-energization . 11
6.3.5 Alternative protection measures . 11
6.4 General requirements for protective provisions .12
6.4.1 General .12
6.4.2 Requirements for insulation .12
6.4.3 Requirements for protective barriers and protective enclosures .12
6.4.4 Requirements for connectors . 13
6.4.5 Insulation coordination. 13
6.5 Alternative approach for protection against electric shock .13
7 Protection against thermal incidents .13
7.1 Overload protection . 13
7.2 Short-circuit protection . .13
8 Requirements for vehicle power supply circuit .14
9 Owner's manual .14
10 Test procedures .14
10.1 General . 14
10.2 Continuity test for equipotential bonding . 14
10.3 Isolation resistance measurements for voltage class B2 electric circuits . 14
10.3.1 Preconditioning and conditioning . 14
10.3.2 Isolation resistance measurements of the balance of electric circuits.15
10.3.3 Isolation resistance measurement of the voltage class B2 electric power
sources .15
10.3.4 Isolation resistance measurement of entire electric circuits. 18
10.4 Test for isolation resistance monitoring system . 18
10.5 Touch current. 18
10.6 Withstand voltage test . 19
10.6.1 General . 19
10.6.2 Preconditioning and conditioning . 19
10.6.3 Test procedure. 19
10.6.4 Test criteria . 20
10.7 Withstand voltage test for electric power sources which are not de-energized .20
iii
10.7.1 General .20
10.7.2 Preconditioning and conditioning . 21
10.7.3 Test . . . 21
10.7.4 Test criteria . 23
Bibliography .24
iv
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 37,
Electrically propelled vehicles.
This fourth edition cancels and replaces the third edition (ISO 6469-3:2018), which has been technically
revised. It also incorporates the Amendment ISO 6469-3:2018/Amd.1:2020.
The main changes are as follows:
— changes from ISO 6469-3:2018/Amd.1:2020 were implemented,
— requirements for equipotential bonding were revised.
A list of all parts in the ISO 6469 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.
v
INTERNATIONAL STANDARD ISO 6469-3:2021(E)
Electrically propelled road vehicles — Safety
specifications —
Part 3:
Electrical safety
1 Scope
This document specifies electrical safety requirements for voltage class B electric circuits of electric
propulsion systems and conductively connected auxiliary electric systems of electrically propelled
road vehicles.
It specifies electrical safety requirements for protection of persons against electric shock and thermal
incidents.
It does not provide comprehensive safety information for manufacturing, maintenance and repair
personnel.
NOTE 1 Electrical safety requirements for post-crash are described in ISO 6469-4.
NOTE 2 Electrical safety requirements for conductive connections of electrically propelled road vehicles to an
external electric power supply are described in ISO 17409.
NOTE 3 Specific electrical safety requirements for magnetic field wireless power transfer between an external
electric power supply and an electrically propelled vehicle are described in ISO 19363.
NOTE 4 Electrical safety requirements for motorcycles and mopeds are described in the ISO 13063 series.
2 Normative references
The following document
...