ISO 5474-1:2024

FINAL DRAFT
International
Standard
ISO/FDIS 5474-1
ISO/TC 22/SC 37
Electrically propelled road
Secretariat: DIN
vehicles — Functional and safety
Voting begins on:
requirements for power transfer
2024-01-03
between vehicle and external
Voting terminates on:
electric circuit —
2024-02-28
Part 1:
General requirements for
conductive power transfer
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INTERNATIONAL STANDARDS MAY ON OCCASION HAVE
TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL
TO BECOME STAN DARDS TO WHICH REFERENCE MAY BE
MADE IN NATIONAL REGULATIONS.
Reference number
ISO/FDIS 5474-1:2024(en) © ISO 2024

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FINAL DRAFT
ISO/FDIS 5474-1:2024(en)
International
Standard
ISO/FDIS 5474-1
ISO/TC 22/SC 37
Electrically propelled road
Secretariat: DIN
vehicles — Functional and safety
Voting begins on:
requirements for power transfer
between vehicle and external
Voting terminates on:
electric circuit —
Part 1:
General requirements for
conductive power transfer
RECIPIENTS OF THIS DRAFT ARE INVITED TO SUBMIT,
COPYRIGHT PROTECTED DOCUMENT
WITH THEIR COMMENTS, NOTIFICATION OF ANY
RELEVANT PATENT RIGHTS OF WHICH THEY ARE AWARE
AND TO PROVIDE SUPPOR TING DOCUMENTATION.
© ISO 2024
IN ADDITION TO THEIR EVALUATION AS
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
LOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
INTERNATIONAL STANDARDS MAY ON OCCASION HAVE
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL
or ISO’s member body in the country of the requester.
TO BECOME STAN DARDS TO WHICH REFERENCE MAY BE
MADE IN NATIONAL REGULATIONS.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland Reference number
ISO/FDIS 5474-1:2023(en) © ISO 2023

© ISO 2024 – All rights reserved
ii

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ISO/FDIS 5474-1:2023(en)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
3.1 General .2
3.2 AC and DC power transfer .5
4 System architecture . 7
5 Environmental and operational conditions . 9
6 Safety requirements. 10
6.1 General .
...

ISO/FDIS 5474-1:2023(E)
ISO/TC 22/SC 37/WG5
Secretariat: DIN
Date: 2023-9-1812-19
Electrically propelled road vehicles — — Functional and safety
requirements for power transfer between vehicle and external
electric circuit — —
Part 1:
General requirements for conductive power transfer
FDIS stage

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ISO/FDIS 5474-1:2023(E)
© ISO 2023
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: + 41 22 749 01 11
EmailE-mail: copyright@iso.org
Website: www.iso.org
Published in Switzerland
© ISO 2023 – All rights reserved

ii

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ISO/FDIS 5474-1:2023(E)
Contents
Foreword . v
Introduction . vi
Part 1: General requirements for conductive power transfer . 1
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
3.1 General . 2
3.2 AC and DC power transfer . 6
4 System architecture . 9
5 Environmental and operational conditions . 11
6 Safety requirements . 12
6.1 General . 12
6.2 Protection of persons against electric shock . 12
6.2.1 General . 12
6.2.2 Compatibility with external safety devices . 12
6.2.3 Insulation resistance . 12
6.2.4 Touch current . 12
6.2.5 Insulation coordination . 12
6.2.6 Protective conductor . 12
6.2.7 Basic protection when connected to an external electric circuit . 14
6.2.8 Requirements for unmated vehicle contacts . 15
6.3 Protection against thermal incident .
...