National foreword

This British Standard is the UK implementation of EN ISO 17409:2020. It is identical to ISO 17409:2020. It supersedes BS EN ISO 17409:2017, which is withdrawn.

The UK participation in its preparation was entrusted to Technical Committee PEL/69, Electric vehicles.

A list of organizations represented on this committee can be obtained on request to its secretary.

This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.

Compliance with a British Standard cannot confer immunity from legal obligations.

This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 March 2020.

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 jointly by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 37, Electrically propelled road vehicles, and Technical Committee IEC/ TC 69, Electric road vehicles and electric industrial trucks.

This second edition replaces the first edition (ISO 17409:2015), which has been technically revised. The main changes compared to the previous edition are as follows:

terms and definitions have been updated,
requirements for mode 1 have been removed because it is no longer relevant for new designs,
requirements for reverse power transfer have been added,
requirements for a DC connection with a thermal management system have been added,
short circuit during DC charging has been reworked, and
requirements for charging with pantograph have been added.

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.

This European Standard was approved by CEN on 18 February 2020.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.

European foreword

This document (EN ISO 17409:2020) has been prepared by Technical Committee ISO/TC 22 "Road vehicles" in collaboration with Technical Committee CEN/TC 301 “Road vehicles” the secretariat of which is held by AFNOR.

This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by September 2020, and conflicting national standards shall be withdrawn at the latest by September 2020.

Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN shall not be held responsible for identifying any or all such patent rights.

This document supersedes EN ISO 17409:2017.

This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association.

According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.

Endorsement notice

The text of ISO 17409:2020 has been approved by CEN as EN ISO 17409:2020 without any modification.

1 Scope

This document specifies electric safety requirements for conductive connection of electrically propelled road vehicles to external electric circuits. External electric circuits include external electric power supplies and external electric loads. This document provides requirements for the charging modes 2, 3, 4, as defined in IEC 61851‑1, and reverse power transfer. For mode 4, this document provides requirements regarding the connection to an isolated DC EV charging station according to IEC 61851‑23.

NOTE 1 This edition does not provide requirements for mode 1.

NOTE 2 External electric circuits are not part of the vehicle.

This document applies to the on-board sections of vehicle power supply circuits. It applies also to dedicated power supply control functions used for the connection of the vehicle to an external electric circuit.

It does not provide comprehensive safety information for manufacturing, maintenance and repair personnel.

NOTE 3 ISO 6469‑3 provides general electrical safety requirements for electrically propelled road vehicles.

NOTE 4 With this edition of this document the limitation of y-capacitance for protection against electric shock under single failure conditions is no longer applicable as a fault protection provision when the vehicle has a conductive DC connection to an external electric circuit.

2 Normative references

3 Terms and definitions

4 Environmental and operational conditions

5 Specific requirements for the vehicle inlet, plug, and cable

5.1 Requirements for the plug and cable (case A)

5.2 Requirements for the vehicle inlet

6 Requirements for protection of persons against electric shock

6.1 General

6.2 Basic protection when connected to an external electric circuit

6.3 Protective conductor

6.4 Isolation resistance

6.5 Requirements for unmated vehicle contacts

6.6 Insulation coordination

6.7 Touch current

6.8 Compatibility with residual current devices (RCD)

7 Protection against thermal incident

7.1 Requirements for normal operation

7.2 Overcurrent protection

7.3 Arc protection for DC connections

7.4 Residual energy after disconnection

7.5 Transient overvoltage

8 Additional requirements for AC power transfer

8.1 Voltage and frequency ranges for normal operation

8.2 Current characteristics

8.3 Active factor

8.4 Interlock function for the vehicle coupler

8.5 Phase order in three-phase operation

9 Additional requirements for DC power transfer

9.1 General

9.2 Disconnection device

9.3 Control pilot functions

9.4 Vehicle isolation resistance monitoring system

9.5 Locking of the vehicle connector

9.6 AC or DC electric power at the same contacts

9.7 Contact temperature

9.8 Overvoltage in case of a load dump

9.9 Compatibility with insulation monitoring

10 Reverse power transfer

10.1 General

10.2 AC reverse power transfer

10.3 DC reverse power transfer

11 Operational requirements

12 Owner’s manual and marking

12.1 Owner's manual

12.2 Marking

13 Test procedure

13.1 General

13.2 Resistance of protective conductor

13.3 Isolation resistance test

13.4 Withstand voltage test

13.5 Inrush current tests

13.6 Touch current

13.7 DC power transfer with maximum current

13.8 DC power contact over temperature

Bibliography

BS EN ISO 17409:2020

Electrically propelled road vehicles. Conductive power transfer. Safety requirements

Current, Under Review

Published:

31 Mar 2020