Electrically propelled road vehicles - Conductive power transfer - Safety requirements (ISO 17409:2020)

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under single failure conditions is no longer applicable as a fault protection provision when the vehicle has a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.

Elektrisch angetriebene Straßenfahrzeuge - Kabelgebundene Energieübertragung - Sicherheitsanforderungen (ISO 17409:2020)

Dieses Dokument legt die elektrischen Sicherheitsanforderungen für die leitfähige Verbindung von elektrisch angetriebenen Straßenfahrzeugen mit externen Stromkreisen fest. Externe Stromkreise umfassen externe elektrische Versorgungssysteme und externe elektrische Lasten. Dieses Dokument enthält Anforderungen für die Ladebetriebsarten 2, 3, 4, wie in IEC 61851 1 festgelegt, sowie die rückwärtsgerichtete Leistungsübertragung. Für Ladebetriebsart 4 enthält dieses Dokument Anforderungen an den Anschluss an eine isolierte Gleichstrom-Ladestation für Elektrofahrzeuge entsprechend IEC 61851 23.
ANMERKUNG Diese Ausgabe enthält keine Anforderungen für Ladebetriebsart 1.
ANMERKUNG 2 Externe Stromkreise sind nicht Teil des Fahrzeugs.
Dieses Dokument gilt für die fahrzeugseitigen Abschnitte der Versorgungsstromkreise des Fahrzeuges. Es gilt auch für spezielle Funktionen zur Steuerung der Stromversorgung, die für den Anschluss des Fahrzeugs an einen externen Stromkreis verwendet werden.
Es enthält keine umfassenden Sicherheitsinformationen für das Herstellungs-, Wartungs- und Reparaturpersonal.
ANMERKUNG 3 ISO 6469 3 enthält allgemeine elektrische Sicherheitsanforderungen für elektrisch angetriebene Straßenfahrzeuge.
ANMERKUNG 4 Mit dieser Ausgabe dieses Dokuments ist die Begrenzung der y Kapazität zum Schutz gegen elektrischen Schlag unter Einzelfehlerzustand nicht mehr als Fehlerschutzbestimmung anwendbar, wenn das Fahrzeug über eine leitfähige Gleichstromverbindung zu einem externen Stromkreis verfügt.

Véhicules routiers à propulsion électrique - Transfert d'énergie conductive - Exigences de sécurité (ISO 17409:2020)

Le présent document spécifie les exigences de sécurité électrique relatives à la connexion par conduction des véhicules routiers à propulsion électrique à des circuits électriques externes. Les circuits électriques externes englobent les sources d'alimentation électrique externes et les charges électriques externes. Le présent document définit les exigences pour la recharge des modes 2, 3 et 4, tel que défini dans l'IEC 61851‑1, et pour le transfert de puissance réversible. Pour le mode 4, le présent document fournit les exigences concernant la connexion à une borne de charge CC isolée, conformément à l'IEC 61851‑23.
NOTE 1  Cette édition ne définit pas les exigences relatives au mode 1.
NOTE 2  Les circuits électriques extérieurs ne font pas partie du véhicule.
Le présent document s'applique aux parties embarquées des circuits d'alimentation des véhicules. Elle s'applique également aux fonctions dédiées de contrôle de l'alimentation électrique utilisées pour la connexion du véhicule à un circuit électrique externe.
Le présent document ne fournit pas d'informations complètes concernant la sécurité pour le personnel de fabrication, de maintenance et de réparation.
NOTE 3  L'ISO 6469‑3 fournit les exigences générales de sécurité électrique pour les véhicules routiers à propulsion électrique.
NOTE 4  Avec l'édition du présent document, la limitation de la capacité y pour la protection contre les chocs électriques dans des conditions de défaillance unique ne s'applique plus en tant que disposition de protection contre les défaillances, lorsque le véhicule dispose d'une connexion par conduction en courant continu avec un circuit électrique externe.

Cestna vozila na električni pogon - Prevodni prenos moči - Varnostne zahteve (ISO 17409:2020)

General Information

Status
Published
Public Enquiry End Date
30-Jun-2019
Publication Date
06-Apr-2020
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
30-Mar-2020
Due Date
04-Jun-2020
Completion Date
07-Apr-2020

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SLOVENSKI STANDARD
SIST EN ISO 17409:2020
01-junij-2020
Nadomešča:
SIST EN ISO 17409:2017
Cestna vozila na električni pogon - Prevodni prenos moči - Varnostne zahteve (ISO
17409:2020)
Electrically propelled road vehicles - Conductive power transfer - Safety requirements
(ISO 17409:2020)
Elektrisch angetriebene Straßenfahrzeuge - Kabelgebundene Energieübertragung -
Sicherheitsanforderungen (ISO 17409:2020)
Véhicules routiers à propulsion électrique - Transfert d'énergie conductive - Exigences
de sécurité (ISO 17409:2020)
Ta slovenski standard je istoveten z: EN ISO 17409:2020
ICS:
43.120 Električna cestna vozila Electric road vehicles
SIST EN ISO 17409:2020 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 17409:2020

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SIST EN ISO 17409:2020


EN ISO 17409
EUROPEAN STANDARD

NORME EUROPÉENNE

March 2020
EUROPÄISCHE NORM
ICS 43.120 Supersedes EN ISO 17409:2017
English Version

Electrically propelled road vehicles - Conductive power
transfer - Safety requirements (ISO 17409:2020)
Véhicules routiers à propulsion électrique - Transfert Elektrisch angetriebene Straßenfahrzeuge -
de puissance par conduction - Exigences de sécurité Kabelgebundene Energieübertragung -
(ISO 17409:2020) Sicherheitsanforderungen (ISO 17409:2020)
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 COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 17409:2020 E
worldwide for CEN national Members.

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SIST EN ISO 17409:2020
EN ISO 17409:2020 (E)
Contents Page
European foreword . 3

2

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SIST EN ISO 17409:2020
EN ISO 17409:2020 (E)
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.

3

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SIST EN ISO 17409:2020

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SIST EN ISO 17409:2020
INTERNATIONAL ISO
STANDARD 17409
Second edition
2020-02
Electrically propelled road vehicles —
Conductive power transfer — Safety
requirements
Véhicules routiers à propulsion électrique — Transfert d'énergie
conductive — Exigences de sécurité
Reference number
ISO 17409:2020(E)
©
ISO 2020

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SIST EN ISO 17409:2020
ISO 17409:2020(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO 2020
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
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2020 – All rights reserved

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SIST EN ISO 17409:2020
ISO 17409:2020(E)

Contents Page
Foreword .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Environmental and operational conditions .10
5 Specific requirements for the vehicle inlet, plug, and cable .11
5.1 Requirements for the plug and cable (case A) .11
5.2 Requirements for the vehicle inlet .11
6 Requirements for protection of persons against electric shock .11
6.1 General .11
6.2 Basic protection when connected to an external electric circuit .11
6.3 Protective conductor .12
6.4 Isolation resistance .13
6.4.1 AC connection .13
6.4.2 DC connection .13
6.5 Requirements for unmated vehicle contacts.13
6.5.1 General.13
6.5.2 Normal operation .14
6.5.3 Operation under single fault conditions .14
6.6 Insulation coordination .15
6.6.1 AC connection .15
6.6.2 DC connection .15
6.7 Touch current .16
6.8 Compatibility with residual current devices (RCD) .16
7 Protection against thermal incident .16
7.1 Requirements for normal operation .16
7.2 Overcurrent protection .16
7.2.1 General.16
7.2.2 Overload protection .17
7.2.3 Short-circuit protection for AC connection .17
7.2.4 Short-circuit protection for DC connection.17
7.3 Arc protection for DC connections .18
7.4 Residual energy after disconnection .19
7.5 Transient overvoltage .19
8 Additional requirements for AC power transfer .19
8.1 Voltage and frequency ranges for normal operation .19
8.2 Current characteristics.19
8.2.1 Load current .19
8.2.2 Inrush current .20
8.3 Active factor .20
8.4 Interlock function for the vehicle coupler .21
8.5 Phase order in three-phase operation .21
9 Additional requirements for DC power transfer .21
9.1 General .21
9.2 Disconnection device .21
9.3 Control pilot functions.22
9.4 Vehicle isolation resistance monitoring system .22
9.5 Locking of the vehicle connector .22
9.6 AC or DC electric power at the same contacts .22
9.7 Contact temperature .23
9.8 Overvoltage in case of a load dump .24
© ISO 2020 – All rights reserved iii

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SIST EN ISO 17409:2020
ISO 17409:2020(E)

9.9 Compatibility with insulation monitoring .24
10 Reverse power transfer .24
10.1 General .24
10.2 AC reverse power transfer .25
10.2.1 General.25
10.2.2 Output power quality . .25
10.2.3 Prevention of disconnection of vehicle coupler under load .26
10.2.4 Protection against electrical shock .26
10.2.5 Protection against thermal incident .26
10.3 DC reverse power transfer .26
10.3.1 General.26
10.3.2 Connection to the external electric circuit .27
10.3.3 Protection against overdischarge of the RESS .27
10.3.4 Auxiliary power supply from EV (optional) .27
10.3.5 Protection against thermal incident .27
11 Operational requirements .27
12 Owner’s manual and marking .27
12.1 Owner's manual .27
12.2 Marking .27
13 Test procedure .27
13.1 General .27
13.2 Resistance of protective conductor .28
13.3 Isolation resistance test .28
13.4 Withstand voltage test .28
13.4.1 General.28
13.4.2 Test voltage .29
13.5 Inrush current tests .29
13.5.1 General.29
13.5.2 Measurement .30
13.6 Touch current .30
13.6.1 General.30
13.6.2 AC Charging .31
13.6.3 DC charging .33
13.7 DC power transfer with maximum current .34
13.8 DC power contact over temperature .34
Annex A (informative) Y capacitance measurement .37
Bibliography .40
iv © ISO 2020 – All rights reserved

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SIST EN ISO 17409:2020
ISO 17409:2020(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 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.
© ISO 2020 – All rights reserved v

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SIST EN ISO 17409:2020

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SIST EN ISO 17409:2020
INTERNATIONAL STANDARD ISO 17409:2020(E)
Electrically propelled road vehicles — Conductive power
transfer — Safety requirements
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
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 6469-3, Electrically propelled road vehicles — Safety specifications — Part 3: Electrical safety
ISO 15118 (all parts), Road vehicles — Vehicle to grid communication interface
ISO 20653, Road vehicles — Degrees of protection (IP code) — Protection of electrical equipment against
foreign objects, water and access
ISO 26262 (all parts), Road vehicles — Functional safety
IEC 60038, IEC standard voltages
IEC 60364-4-41:2005, Low-voltage electrical installations — Part 4-41: Protection for safety — Protection
against electric shock
IEC 60364-4-43:2008, Electrical installations of buildings — Part 4-43: Protection for safety — Protection
against overcurrent
IEC 60364-5-54, Low-voltage electrical installations — Part 5-54: Selection and erection of electrical
equipment — Earthing arrangements and protective conductors
IEC 60364-6, Low-voltage electrical installations — Part 6: Verification
© ISO 2020 – All rights reserved 1

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SIST EN ISO 17409:2020
ISO 17409:2020(E)

IEC 60664-1, Insulation coordination for equipment within low-voltage systems - Part 1: Principles,
requirements and tests
IEC 61000-3-3, Electromagnetic compatibility (EMC) — Part 3-3: Limits — Limitation of voltage changes,
voltage fluctuations and flicker in public low-voltage supply systems, for equipment with rated current
≤16 A per phase and not subject to conditional connection
IEC 61000-3-11, Electromagnetic compatibility (EMC) — Part 3-11: Limits — Limitation of voltage changes,
voltage fluctuations and flicker in public low-voltage supply systems — Equipment with rated current ≤
75 A and subject to conditional connection
IEC 61032, Protection of persons and equipment by enclosures — Probes for verification
IEC 61851-1:2017, Electric vehicle conductive charging system — Part 1: General requirements
IEC 61851-23:—, Electric vehicle conductive charging system — Part 23: DC electric vehicle charging station
IEC 62196-1, Plugs, socket-outlets, vehicle connectors and vehicle inlets — Conductive charging of electric
vehicles — Part 1: General requirements
IEC 62196-2, Plugs, socket-outlets, vehicle connectors and vehicle inlets — Conductive charging of electric
vehicles — Part 2: Dimensional compatibility and interchangeability requirements for a.c. pin and contact-
tube accessories
IEC 62196-3:2015, Plugs, socket-outlets, vehicle connectors and vehicle inlets — conductive charging of
electric vehicles — Part 3: Dimensional compatibility and interchangeability requirements for dedicated
d.c. and combined a.c./d.c. pin and contact-tube vehicle c
...

SLOVENSKI STANDARD
oSIST prEN ISO 17409:2019
01-junij-2019
Cestna vozila na električni pogon - Prevodni prenos moči - Varnostne zahteve
(ISO/DIS 17409:2019)
Electrically propelled road vehicles - Conductive power transfer - Safety requirements
(ISO/DIS 17409:2019)
Ta slovenski standard je istoveten z: prEN ISO 17409
ICS:
43.120 Električna cestna vozila Electric road vehicles
oSIST prEN ISO 17409:2019 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
oSIST prEN ISO 17409:2019

---------------------- Page: 2 ----------------------
oSIST prEN ISO 17409:2019
DRAFT INTERNATIONAL STANDARD
ISO/DIS 17409
ISO/TC 22/SC 37 Secretariat: DIN
Voting begins on: Voting terminates on:
2019-04-09 2019-07-02
Electrically propelled road vehicles — Conductive
power transfer — Safety requirements
Titre manque
ICS: 43.120
This document is circulated as received from the committee secretariat.
THIS DOCUMENT IS A DRAFT CIRCULATED
This draft is submitted to a parallel vote in ISO and in IEC.
FOR COMMENT AND APPROVAL. IT IS
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
ISO/CEN PARALLEL PROCESSING
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
Reference number
NATIONAL REGULATIONS.
ISO/DIS 17409:2019(E)
RECIPIENTS OF THIS DRAFT ARE INVITED
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
©
PROVIDE SUPPORTING DOCUMENTATION. ISO 2019

---------------------- Page: 3 ----------------------
oSIST prEN ISO 17409:2019
ISO/DIS 17409:2019(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO 2019
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
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2019 – All rights reserved

---------------------- Page: 4 ----------------------
oSIST prEN ISO 17409:2019
ISO/DIS 17409:2019(E)
Contents
Foreword . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 Environmental and operational conditions . 18
5 Specific requirements for the vehicle inlet, plug, and cable . 18
6 Requirements for protection of persons against electric shock . 18
7 Protection against thermal incident . 23
8 Additional requirements for AC power transfer . 26
9 Additional requirements for DC power transfer . 29
10 Reverse power transfer . 32
11 Operational requirements . 35
12 Owner’s manual and marking . 35
13 Test procedure . 36
Annex A: Y capacitance measurement . 46
Bibliography . 48
© ISO 2019 – All rights reserved 3

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oSIST prEN ISO 17409:2019

---------------------- Page: 6 ----------------------
oSIST prEN ISO 17409:2019
ISO/DIS 17409:2019(E)
1 Foreword
2 ISO (the International Organization for Standardization) is a worldwide federation of national standards
3 bodies (ISO member bodies). The work of preparing International Standards is normally carried out
4 through ISO technical committees. Each member body interested in a subject for which a technical
5 committee has been established has the right to be represented on that committee. International
6 organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO
7 collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
8 electrotechnical standardization.
9 The procedures used to develop this document and those intended for its further maintenance are
10 described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the
11 different types of ISO documents should be noted. This document was drafted in accordance with the
12 editorial rules of the ISO/IEC Directives, Part 2. www.iso.org/directives
13 Attention is drawn to the possibility that some of the elements of this document may be the subject of
14 patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any
15 patent rights identified during the development of the document will be in the Introduction and/or on
16
the ISO list of patent declarations received. www.iso.org/patents
17 Any trade name used in this document is information given for the convenience of users and does not
18 constitute an endorsement.
19 For an explanation on the meaning of ISO specific terms and expressions related to conformity
20 assessment, as well as information about ISO's adherence to the WTO principles in the Technical Barriers
21 to Trade (TBT) see the following URL: Foreword - Supplementary information
22 The committee responsible for this document is ISO/TC22/SC37 “Electrically propelled road vehicles”
nd st
23 This 2 edition replaces the 1 edition. Beside regular maintenance and update of definitions, the
st
24 following changes were performed to the 1 edition:
25 - Requirements for mode 1 removed because it is no longer relevant for new design.
26 - Requirements for reverse power transfer added
27 - Requirements for High Power Charging (HPC) added
28 - Short circuit during DC charging reworked
29 - Charging with pantograph reflected
30 With this edition of ISO 17409 the limitation of y-capacitance for protection against electric shock under
31 single failure conditions is no longer applicable as a fault protection measure when the vehicle is
32 conductively connected to an external electric circuit.
© ISO 2019 – All rights reserved 5

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oSIST prEN ISO 17409:2019
ISO/DIS 17409:2019(E)
33 Electrically propelled road vehicles – Conductive power transfer –
34 Safety requirements
35 1 Scope
36 This standard specifies electric safety requirements for conductive connection of electrically propelled
37 road vehicles to external electric circuits. External electric circuits include external electric power
38 supplies and external electric loads. This document provides requirements for Mode 2, 3, 4 and reverse
39 power flow.
40 NOTE 1 This edition does not provide requirements for Mode 1.
41 This standard applies to the on-board sections of vehicle power supply circuits. It applies also to
42 dedicated power supply control functions used for the connection of the vehicle to an external electric
43 circuit.
44 It does not provide comprehensive safety information for manufacturing, maintenance and repair
45 personnel.
46 This document provides requirements for the charging modes as defined in IEC 61851-1:2017. For mode
47 4, this document provides requirements regarding the connection to an isolated DC EV charging station
48 according to IEC 61851-23.
49 NOTE 2 The requirements when not connected to external electric circuits are specified in ISO 6469-3.
50 NOTE 3 Safety requirements for conductive connection of electrically propelled mopeds and motorcycles to external
51 electric power supplies are covered by ISO 18246.
52 2 Normative references
53 The following documents, in whole or in part, are normatively referenced in this document and are
54 indispensable for its application. For dated references, only the edition cited applies. For undated
55 references, the latest edition of the referenced document (including any amendments) applies.
56 ISO 6469-3:2018, Electrically propelled road vehicles — Safety specifications — Part 3: Protection of
57 persons against electric shock
58 ISO 15118 (all parts), Road vehicles — Vehicle to grid communication interface
59 ISO 20653, Road vehicles — Degrees of protection (IP code) — Protection of electrical equipment against
60 foreign objects, water and access
61 ISO 26262 (all parts), Road vehicles — Functional safety
62 IEC 60038, IEC standard voltages
63 IEC 60309-1, Plugs, socket-outlets and couplers for industrial purposes — Part 1: General requirements
64 IEC 60309-2, Plugs, socket-outlets and couplers for industrial purposes — Part 2: Dimensional
65 interchangeability requirements for pin and contact-tube accessories
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oSIST prEN ISO 17409:2019
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66 IEC 60364-4-41:2005; Low-voltage electrical installations –Part 4-41: Protection for safety –Protection
67 against electric shock
68 IEC 60364-4-43:2008, Electrical installations of buildings — Part 4-43: Protection for safety — Protection
69 against overcurrent
70 IEC 60364-5-54, Low-voltage electrical installations — Part 5-54: Selection and erection of electrical
71 equipment — Earthing arrangements and protective conductors
72 IEC 60364-6, Low-voltage electrical installations — Part 6: Verification
73 IEC 60664 (all parts), Insulation coordination for equipment within low-voltage systems
74 IEC 61000-3-3; Electromagnetic compatibility (EMC) - Part 3-3: Limits - Limitation of voltage changes,
75 voltage fluctuations and flicker in public low-voltage supply systems, for equipment with rated current
76 ≤16 A per phase and not subject to conditional connection
77 IEC 610003-11, Electromagnetic compatibility (EMC) - Part 3-11: Limits - Limitation of voltage changes,
78 voltage fluctuations and flicker in public low-voltage supply systems - Equipment with rated current ≤
79 75 A and subject to conditional connection
80 IEC 61851-1:2017, Electric vehicle conductive charging system — Part 1: General requirements
81 IEC 61851-23, Electric vehicle conductive charging system — Part 23: DC electric vehicle charging station
82 IEC 62196-1, Plugs, socket-outlets, vehicle connectors and vehicle inlets — Conductive charging of electric
83 vehicles — Part 1: General requirements
84 IEC 62196-2, Plugs, socket-outlets, vehicle connectors and vehicle inlets — Conductive charging of electric
85 vehicles — Part 2: Dimensional compatibility and interchangeability requirements for a.c. pin and contact-
86 tube accessories
87 IEC 62196-3:2015, Plugs, socket-outlets, vehicle connectors and vehicle inlets — conductive charging of
88 electric vehicles — Part 3: Dimensional compatibility and interchangeability requirements for dedicated d.c.
89 and combined a.c./d.c. pin and contact-tube vehicle couplers
90 IEC 62196-3-1, Plugs, socket-outlets, vehicle connectors and vehicle inlets — conductive charging of electric
91 vehicles — Part 3-1: Vehicle connector, vehicle inlet and cable assembly intended to be used with a thermal
92 management system for DC charging
93 3 Terms and definitions
94 3.1
95 autoconnect charging device
96 ACD
97 active device where the physical connection between EV supply equipment and vehicle is made without
98 user interaction providing an electromechanical interface.
1
99 [SOURCE: IEC 61851-23-1:– , 3.1.203]
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100 3.2
101 ACD counterpart
102 passive device which is used in combination with an ACD to make the physical connection between EV
103 supply equipment and vehicle providing an electromechanical interface without user interaction.
1
104 [SOURCE: IEC 61851-23-1:– , 3.1.204]
105 3.3
106 automatic coupler
107 system comprising of an ACD and ACD counterpart.
1
108 [SOURCE: IEC 61851-23-1:– , 3.1.205]
109 3.4
110 balance of electric power system
111 remaining section of an electric circuit when all electric power sources that are energized (e.g. RESS and
112 fuel cell stacks) are disconnected
113 [SOURCE: ISO 6469-3: 2018, 3.2]
114 3.5
115 basic insulation
116 insulation of hazardous live parts which provides basic protection
117 Note 1 to entry: This concept does not apply to insulation used exclusively for functional purposes.
118 [SOURCE: ISO 6469-3: 2018, 3.3]
119 3.6
120 case A
121 connection of an EV to the supply network with a plug and cable permanently attached to the EV
122 Note 1 to entry: The cable assembly is part of the vehicle.
123 [SOURCE: IEC 61851-1:2017, 3.1.10]
124 3.7
125 case B
126 connection of an EV to the supply network with a cable assembly detachable at both ends
127 Note 1 to entry: The cable assembly is not part of the vehicle or the EV charging station.
128 [SOURCE: IEC 61851-1:2017, 3.1.11]
129 3.8
130 case C
131 connection of an EV to the supply network utilizing a cable and vehicle connector permanently attached
132 to the EV charging station.
133 Note 1 to entry: The cable assembly is part of the EV charging station.
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134 [SOURCE: IEC 61851-1:2017, 3.1.12]
135 3.9
136 case D
137 connection of an EV to a supply network utilizing an automatic coupler which has an ACD on the EV
138 supply equipment
1
139 [SOURCE: IEC 61851-23-1:– , 3.1.201]
140 3.10
141 case E
142 connection of an EV to a supply network utilizing an automatic coupler which has an ACD on the EV
1
143 [SOURCE: IEC 61851-23-1:– , 3.1.202]
144 3.11
145 charger
146 power converter at the vehicle power supply circuit which supplies electric power, e.g. for charging a
147 RESS
148 3.12
149 conductive part
150 part which can carry electric current
151 [SOURCE: ISO 6469-3: 2018, 3.6]
152 3.13
153 control pilot function
154 function used to monitor and control the interaction between the EV and the EV supply equipment
155 [SOURCE: IEC 61851-1:2017, 3.3.3]
156 3.14
157 cut-off current
158 let-through current
159 the maximum instantaneous value of current attained during the breaking operation of a switching
160 device or a fuse
161 Note 1 to entry: This concept of particular importance when the switching device or the fuse operates in such a
162 manner that the prospective peak current of the circuit is not reached.
163 [SOURCE: IEC 60050-441:1984, 441-17-12]
164 3.15
165 DC EV charging station
166 EV charging station that supplies direct current to an EV
167 [SOURCE: IEC 61851-1:2017, 3.1.6]
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ISO/DIS 17409:2019(E)
168 3.16
169 degree of protection
170 protection provided by an enclosure against access, foreign objects and/or water and verified by
171 standardized test methods
172 [SOURCE: ISO 20653:2013, 3.2]
173 3.17
174 direct contact
175 electric contact of persons or animals with live parts
176 [SOURCE: ISO 6469-3: 2018, 3.10]
177 3.18
178 displacement power factor
179 cos φ
180 cosine of the phase angle between the fundamental frequency of the voltage between a line conductor
181 and earth and the current in this line conductor
1
182 [SOURCE: VDE-AR-N 4100:– , 3.1.59, modified – translated to English]
183 3.19
184 distortion power factor
185 coefficient, used to take into account harmonics influence into the true power factor
186 Note 1 to entry: Calculation is as follows:
1
187 ���������� ����� ������ =


√1+����
188 THDi being the total harmonic distortion for current.
189 3.20
190 double insulation
191 insulation comprising both basic insulation and supplementary insulation
192 [SOURCE: ISO 6469-3: 2018, 3.11]
193 3.21
194 electrically propelled vehicle
195 EV
196 vehicle with one or more electric drive(s) for vehicle propulsion
197 [SOURCE: ISO 6469-3: 2018, 3.15]
198 3.22
199 electric chassis
200 conductive parts of a vehicle that are electrically connected and whose potential is taken as reference
1
Under preparation. Stage at the time of publication: Entwurf, 2018-01-23
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201 [SOURCE: ISO 6469-3: 2018, 3.12]
202 3.23
203 electric drive
204 combination of traction motor, power electronics and their associated controls for the conversion of
205 electric to mechanical power and vice versa
206 [SOURCE: ISO 6469-3: 2018, 3.13]
207 3.24
208 electric shock
209 physiological effect resulting from an electric current through a human body or animal body
210 [SOURCE: ISO 6469-3: 2018, 3.14]
211 3.25
212 EV charging station
213 stationary part of EV supply equipment connected to the supply network
214 [SOURCE: IEC 61851-1: 2017, 3.1.5]
215 3.26
216 EV plug
217 specific plug intended to be used as part of EV supply equipment or for the connection of EV to EV supply
218 equipment, and defined in the IEC 62196 series
219 [SOURCE: IEC 61851-1: 2017, 3.5.8]
220 3.27
221 EV supply equipment
222 equipment or a combination of equipment, providing dedicated functions to supply electric energy from
223 a fixed electrical installation or supply network to an EV for the purpose of charging
224 EXAMPLE 1: For Mode 3 case B, the EV supply equipment consists of the EV charging station and the cable assembly.
225 EXAMPLE 2: For Mode 3 case C, the EV supply equipment consists of the EV charging station with its cable assembly.
226 [SOURCE: IEC 61851-1:2017, 3.1.1]
227 3.28
228 exposed conductive part
229 conductive part of equipment which can be touched and which is not normally live, but which can become
230 live when basic insulation fails
231 [SOURCE: ISO 6469-3: 2018, 3.18]
232 3.29
233 external electric circuit
234 electric circuit which connects to the vehicle power supply circuit using the plug (case A), the vehicle inlet
235 (case B and case C), the ACD counterpart (case D) or the ACD (case E)
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236 EXAMPLE: EV charging station, external electric load.
237 3.30
238 external electric power supply
239 electric power source that is not part of the vehicle for supplying electric energy to an EV using an EV
240 supply equipment
241 3.31
242 hazard
243 potential source of harm
244 [SOURCE: IEC 60050-903:2013, 903-01-02]
245 3.32
246 hazardous live part
247 live part which, under certain conditions, can give a harmful electric shock
248 [SOURCE: ISO 6469-3: 2018, 3.22, modified – Note 1 to entry removed.]
249 3.33
250 interlock function
251 function that prevents the power contacts of a socket-outlet/vehicle connector from becoming live
252 before it is in proper engagement with a plug/vehicle inlet, and which either prevents the plug/vehicle
253 connector from being withdrawn while its power contacts are live or makes the power contacts dead
254 before separation
255 [SOURCE: IEC 61851-1:2017, 3.5.16, modified – term changed from “interlock” to “interlock function”,
256 definition changed from “device or combination of devices” to “function”]
257 3.34
258 isolation resistance
259 insulation resistance
260 resistance between live parts of an electric circuit and the electric chassis as well as other electric
261 circuits which are insulated from this electric circuit
262 [SOURCE: ISO 6469-3: 2018, 3.23]
263 3.35
264 isolation resistance monitoring system
265 system that periodically or continuously monitors the isolation resistance between live parts and the
266 electric chassis
267 [SOURCE: ISO 6469-3: 2018, 3.24]
268 3.36
269 live conductor
270 conductor which is energized in normal operation and capable of contributing to the transmission or
271 distribution of electric energy
272 Note 1 to entry: Live conductors include line conductors (including DC+ conductors and DC- conductors) and
273 neutral conductors.
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274 3.37
275 live part
276 conductor or conductive part intended to be energized in normal use, but by convention not the electric
277 chassis
278 [SOURCE: ISO 6469-3: 2018, 3.25]
279 3.38
280 maximum working voltage
281 highest value of AC voltage (rms) or of DC voltage that can occur under normal operating conditions
282 according to the manufacturer's specifications, disregarding transients and ripple
283 [SOURCE: ISO 6469-3: 2018, 3.26, modified – term “any” deleted from “normal operating conditions”]
284 3.39
285 mode 1
286 method for the connection of an EV to a standard socket-outlet of an AC supply network, utilizing a cable
287 and plug, both of which are not fitted with any supplementary pilot or auxiliary contacts
288 [SOURCE: IEC 61851-1:2017, 6.2.1]
289 3.40
290 mode 2
291 method for the connection of an EV to a standard socket-outlet of an AC supply network utilizing an AC
292 EV supply equipment with a cable and plug, with a control pilot function and system for personal
293 protection against electric shock placed between the standard plug and the EV
294 [SOURCE: IEC 61851-1:2017, 6.2.2]
295 3.41
296 mode 3
297 method for the connection of an EV to an AC EV supply equipment permanently connected to an AC supply
298 network, with a control pilot function that extends from the AC EV supply equipment to the EV
299 Note 1 to entry: Mode 3 includes the use of cable assembly not permanently connected to the a.c supply network
300 (case A and case B).
301 [SOURCE: IEC 61851-1:2017, 6.2.3, modified – Note 1 to entry added.]
302 3.42
303 mode 4
304 method for the connection of an EV to an AC or DC supply network utilizing a DC EV supply equipment,
305 with a control pilot function that extends from the DC EV supply equipment to the EV
306 [SOURCE: IEC 61851-1:2017, 6.2.4]
307 3.43
308 overcurrent protection
309 protection intended to operate when the current is in excess of a predetermined value
310 Note 1 to entry: a charge control function is not considered an overcurrent protection
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oSIST prEN ISO 17409:2019
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311 [SOURCE: ISO 6469-3: 2018, 3.28]
312 3.44
313 overload protection
314 protection intended to operate in the event of overload on the protected section

315 [SOURCE: ISO 6469-3: 2018, 3.27]
316 3.45
317 plug
318 accessory having contacts designed to engage with the contacts of a socket-outlet, also incorporating
319 means for the electrical connection and mechanical retention of flexible cables or cords
320 [SOURCE: IEC 61851-1:2017, 3.5.9]
321 3.46
322 protective barrier
323 part providing protection against direct contact from any usual direction of access

324 [SOURCE: ISO 6469-3: 2018, 3.29]
325 3.47
326 protective conductor
327 conductor provided for purposes of safety, for example protection against electric shock
328 EXAMPLE Examples of a protective conductor include a protective bonding conductor, protective earthing
329 conductor and an earthing conductor when used for protection against electric shock.
330 [SOURCE: IEC 61851-1:2017, 3.7.2]
331 3.48
332 protective enclosure
333 electrical enclosure surrounding internal parts of equipment to prevent access to hazardous live parts
334 from any direction

335 [SOURCE: ISO 6469-3: 2018, 3.30]
336 3.49
337 radio frequency interference filter
338 RFI filter
339 electrical device or circuit that mitigates the radio frequency electromagnetic noise present on the power
340 and signal lines
341 3.50
342 rated current
343 current assigned by the manufacturer for a specified operating condition
344 [SOURCE: IEC 60050-442: 442-01-02, modified – “of an accessory” removed from end of definition.]
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oSIST prEN ISO 17409:2019
ISO/DIS 17409:2019(E)
345 3.51
346 rechargeable energy storage system
347 RESS
348 rechargeable system that stores energy for delivery of electric energy for the electric drive
349 Examples to entry: Battery, capacitor, flywheel.
350 [SOURCE: ISO 6469-1:-2, 3.22]
351 3.52
352 reinforced insulation
353 insulation of hazardous live parts which provides a degree of protection against electric shock equivalent
354 to double insulation
355 Note 1 to entry: Reinforced insulation may comprise several layers that cannot be tested singly as basic insulation
356 or supplementary insulation.

357 [SOURCE: ISO 6469-3: 2018, 3.32]
358 3.53
359 residual current device
360 RCD
361 mechanical switching device designed to make, carry and break currents under normal service conditions
362 and to cause the opening of the contacts when the residual current attains a given value under specified
363 conditions
364 Note 1 to entry: A residual current device can be a combination of various separate elements designed to detect and
365 evaluate the residual current and to make and break current.
366 [SOURCE: IEC 60050-442:1998, 442-05-02]
367 3.54
368 reverse power transfer
369 supply of electric power from an EV using the EV plug (case A), the vehicle inlet (case B and case C), the
370 ACD counterpart (case D) or the ACD (case E) to an external electric circuit
371 Note 1 to entry: Unintended current flow from an EV to an external electric circuit is not considered a reverse power
372 transfer.
373 Note 2 to entry: Supply of power by using an on-board equipment that is equipped with a socket-outlet is not reverse
374 power transfer.
375 3.55
376 socket-outlet
377 accessory having socket-contacts designed to engage with the contacts of a plug and having terminals for
378 the connection of cables or cords
379 [SOURCE: IEC 61851-1:2017, 3.5.10]
2
Under preparation. Stage at the time of publication: ISO/FDIS 6469-1:2019
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oSIST prEN ISO 17409:2019
ISO/DIS 17409:2019(E)
380 3.56
381 standard plug and socket-outlet
382 plug and socket-outlet which meets the requirements of any IEC and/or national standard that provides
383 interchangeability by standard sheets, excluding the specific EV accessories as defined in the IEC 62196
384 series
385 Note 1 to entry: The standards IEC 60309–1, IEC 60309–2, IEC 60884–1 and IEC TR 60083 define standard plugs
386 and socket-outlets.
387 [SOURCE: IEC 61851-1:2017, 3.5.11]
388 3.57
389 supplementary insulation
390 independent insulation applied in addition to basic insulation, for fault protection

391 [SOURCE: ISO 6469-3: 2018, 3.33]
392 3.58
393 supply network
394 any source of electric energy (e.g. mains or electric grid, distributed energy resources (DER), battery
395 bank, PV installation generator, etc.)
396 [SOURCE: IEC 61851-1: 2017, 3.7.1]
397 3.59
398 thermal sensing
399 means for providing temperature data of accessories, cable assemblies or parts thereof
3
400 [SOURCE: IEC 61851-23:– , 3.3.109]
401 3.60
402 total harmonic ratio
403 total harmonic distortion
404 THD
405 ratio of the r.m.s. value of the harmonic content to the r.m.s. value of the fundamental component or the
406 reference fundamental component of an alternating quantity
407 Note 1 to entry: The total harmonic ratio depends on the choice of the fundamental component. If it is not clear from
408 the context which one is used an indication s
...

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