ISO 17409:2015

INTERNATIONAL ISO
STANDARD 17409
First edition
2015-11-01
Corrected version
2015-12-15
Electrically propelled road vehicles —
Connection to an external electric
power supply — Safety requirements
Véhicules routiers à propulsion électrique — Connexion à une borne
d’alimentation électrique externe — Exigences de sécurité
Reference number
©
ISO 2015
© ISO 2015, Published in Switzerland
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ii © ISO 2015 – All rights reserved

Contents Page
Foreword .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Environmental conditions . 6
5 Requirements for protection of persons against electric shock . 6
5.1 Basic protection . 6
5.2 Protection under single failure conditions . 7
5.3 Isolation resistance . 8
5.3.1 A.C. connection (Mode 1, 2, and 3) . 8
5.3.2 D.C. connection (Mode 4) . 8
5.4 Protection from unintended voltage . 9
5.4.1 Mode 1 . 9
5.4.2 Mode 2 and mode 3 . 9
5.4.3 Mode 4 . 9
5.4.4 Contacts of unmated portion of vehicle inlet .10
5.5 Insulation coordination .10
5.5.1 General.10
5.5.2 A.C. connection (Mode 1, 2, and 3) .10
5.5.3 D.C. connection (Mode 4) .10
6 Protection against thermal incident .10
6.1 Overcurrent protection .10
6.1.1 Overload protection .10
6.1.2 Short-circuit protection for a.c. connection .11
6.1.3 Short-circuit protection for d.c. connection .11
6.2 Arc protection for d.c. connections .12
6.3 Residual energy after disconnection .12
7 Specific requirements for the vehicle inlet, plug, and cable .12
7.1 Requirements for the plug and cable .12
7.2 Requirements for the vehicle inlet .12
8 Additional requirements for a.c. electric power supply .13
8.1 Standard a.c. external electric power supply conditions for operation in service .13
8.2 Current characteristics.13
8.2.1 Load current .13
8.2.2 Inrush current .13
8.3 D.C. fault currents .14
8.4 Touch current .14
8.5 Unintended reverse power flow .14
8.6 Power factor .14
8.7 Locking of the vehicle connector .14
9 Additional requirements for d.c. electric power supply .15
9.1 Disconnection device .15
9.2 Control pilot functions.15
9.3 Vehicle isolation resistance monitoring system .15
9.4 Locking of the vehicle connector .15
9.5 A.C. or D.C. electric power at the same contacts.16
9.6 Contact temperature at vehicle inlet .16
9.7 Overvoltage in case of a load dump .16
9.8 Unintended reverse power flow .17
9.9 Y capacitances .17
10 Operational requirements .17
11 Owner’s manual and marking .17
11.1 Owner’s manual .17
11.2 Marking .17
12 Test procedure .17
12.1 General note on tests .17
12.2 Resistance of protective conductor .17
12.3 Isolation resistance test .17
12.3.1 Preconditioning and conditioning .17
12.3.2 Isolation resistance measurements at the vehicle inlet or plug .18
12.4 Withstand voltage test .18
12.4.1 General.18
12.4.2 Preconditioning and conditioning .19
12.4.3 Test procedure .19
12.4.4 Test voltage .19
12.5 Inrush current tests .20
12.5.1 General.20
12.5.2 Measurement .20
12.6 Touch current .21
Bibliography .23
iv © ISO 2015 – All rights reserved

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
...