ISO/PAS 5474-6:2025

Electrically propelled road vehicles — Functional and safety requirements for power transfer between vehicle and external electric circuit — Part 6: Safety and interoperability requirements for heavy-duty vehicles in magnetic field wireless power transfer

This document defines the requirements and operation of the on-board vehicle equipment that enables magnetic field wireless power transfer (MF-WPT) for traction battery charging of electric vehicles. It specifies requirements for static (vehicle not in motion) and dynamic (vehicle in motion) applications. It is intended to be used for heavy duty vehicles. This does not exclude the application of systems in passenger cars or light commercial vehicles This document addresses the following aspects for an EV device: — safety requirements; — transferred power and power transfer efficiency; — ground clearance of the EV device; — functionality with associated off-board systems under various conditions and independent of manufacturer (interoperability); — test procedures. EV devices that fulfil the requirements in this document are intended to operate with supply devices that fulfil the MF-WPT related requirements in the IEC 61980 series. In this edition, multiple secondary devices (modular approach for higher power classes) are not covered. NOTE The dynamic application is shown in Annex C.

Véhicules routiers à propulsion électrique — Exigences fonctionnelles et exigences de sécurité pour le transfert de puissance entre le véhicule et le circuit électrique externe — Partie 6: Exigences de sécurité et d'interopérabilité pour les véhicules utilitaires lourds dans le cadre du transfert d'énergie sans fil par champ magnétique

General Information

• Status: Published
• Publication Date: 27-Jan-2025
• ICS: 43.120 - Electric road vehicles
• Technical Committee: ISO/TC 22/SC 37 - Electrically propelled vehicles
• Drafting Committee: ISO/TC 22/SC 37 - Electrically propelled vehicles
• Current Stage: 6060 - International Standard published
• Start Date: 28-Jan-2025
• Due Date: 28-Jan-2025
• Completion Date: 28-Jan-2025

Standards Content (Sample)

Publicly
Available
Specification
ISO/PAS 5474-6
First edition
Electrically propelled road
2025-01
vehicles — Functional and safety
requirements for power transfer
between vehicle and external
electric circuit —
Part 6:
Safety and interoperability
requirements for heavy-duty
vehicles in magnetic field wireless
power transfer
Véhicules routiers à propulsion électrique — Exigences
fonctionnelles et exigences de sécurité pour le transfert de
puissance entre le véhicule et le circuit électrique externe —
Partie 6: Exigences de sécurité et d'interopérabilité pour les
véhicules utilitaires lourds dans le cadre du transfert d'énergie
sans fil par champ magnétique
Reference number
© ISO 2025
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ii
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 System structure . 4
5 Requirements regarding environmental conditions . 4
6 Classification . 5
7 MF-WPT power transfer requirements . 5
7.1 General .5
7.2 Frequency .5
7.3 Requirements for output power.6
7.4 Requirements for power transfer efficiency.6
7.5 Requirements for output voltage .6
7.5.1 Performance requirements at different output voltage levels .6
7.5.2 Voltage ripple and voltage overshoot .6
7.6 MF-WPT power transfer test procedure .6
7.6.1 General .6
7.6.2 Test setup .6
7.6.3 Test procedure.10
8 Requirements for communication and MF-WPT activities .13
9 EMC requirements .13
10 Safety requirements.13
10.1 Protection in case of unintended power transfer . 13
10.2 Protection against electric shock . 13
10.2.1 General . 13
10.2.2 Insulation coordination.14
10.3 Protection against thermal incidents .14
10.3.1 General .14
10.3.2 Overload protection and short-circuit protection .14
10.4 Protection of persons against electromagnetic effects .14
10.4.1 General .14
10.4.2 Protection areas .14
10.4.3 Requirements for protection of persons against exposure to hazardous
electromagnetic fields . 15
10.4.4 Requirements to protect the functionality of CIEDs . 15
10.5 Protection against overheating .16
11 Owner’s manual and marking . 16
11.1 Owner's manual .16
11.2 Marking .16
Annex A (informative) Multi-phase coil reference SPC for MF-WPT 4/5 . 17
Annex B (informative) DD reference SPCs for MF-WPT4/5 (static/dynamic) .22
Annex C (informative) Dynamic wireless power transfer for heavy-duty vehicles .27
Bibliography .31

iii
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 document 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).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent
rights in respect thereof. As of the date of publication of this document, ISO had not received notice of (a)
patent(s) which may be required to implement this document. However, implementers are cautioned that
this may not represent the latest information, which may be obtained from the patent database available at
www.iso.org/patents. ISO shall not be held responsible for identifying any or all such patent rights.
Any trade name used in this document is information given for the convenience of users and does not
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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, SC 37, Electrically propelled
vehicles.
A list of all parts in the ISO 5474 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.

iv
Introduction
This document specifies requirements for on-board components of a wireless power transfer systems in
heavy-duty vehicles. It gives guidance in terms of safety and performance and additionally addresses
interoperability to off-board components from different manufacturers to, for example, support the
development of public wireless charging infrastructure. Even if the technology itself is well known, the
implementation in a vehicle is new and demands to meet the very specific requirements of the automotive
industry. This document is based on limited experience with series development and production. Current
and future product developments will continuously prove (and disprove) the applicability of this document
to further improve the contents, especially regarding the interoperability between systems from different
manufacturers.
The systems specified in this document are intended to work with off-board systems that are compliant
with the requirements of the relevant portions of the IEC 61980 series. Some of those relevant documents
are currently in development.
v
Publicly Available Specification ISO/PAS 5474-6:2025(en)
Electrically propelled road vehicles — Functional and safety
requirements for power transfer between vehicle and
external electric circuit —
Part 6:
Safety and interoperability requirements for heavy-duty
vehicles in magnetic field wireless power transfer
1 Scope
This document defines the requirements and operation of the on-board vehicle equipment that enables
magnetic field wireless power transfer (MF-WPT) for traction battery charging of electric vehicles. It
specifies requirements for static (vehicle not in motion) and dynamic (vehicle in motion) applications. It is
intended to be used for heavy duty vehicles. This does not exclude the application of systems in passenger
cars or light commercial vehicles
This document addresses the following aspects for an EV device:
— safety requirements;
— transferred power and power transfer efficiency;
— ground clearance of the EV device;
— functionality with associated off-b
...