IEC 61851-23:2014

IEC 61851-23 ®
Edition 1.0 2014-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Electric vehicle conductive charging system –
Part 23: DC electric vehicle charging station

Système de charge conductive pour véhicules électriques –
Partie 23: Borne de charge en courant continu pour véhicules électriques

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC
copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
your local IEC member National Committee for further information.

Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite
ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie
et les microfilms, sans l'accord écrit de l'IEC ou du Comité national de l'IEC du pays du demandeur. Si vous avez des
questions sur le copyright de l'IEC ou si vous désirez obtenir des droits supplémentaires sur cette publication, utilisez
les coordonnées ci-après ou contactez le Comité national de l'IEC de votre pays de résidence.

IEC Central Office Tel.: +41 22 919 02 11
3, rue de Varembé Fax: +41 22 919 03 00
CH-1211 Geneva 20 info@iec.ch
Switzerland www.iec.ch
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigenda or an amendment might have been published.

IEC Catalogue - webstore.iec.ch/catalogue Electropedia - www.electropedia.org
The stand-alone application for consulting the entire The world's leading online dictionary of electronic and
bibliographical information on IEC International Standards, electrical terms containing more than 30 000 terms and
Technical Specifications, Technical Reports and other definitions in English and French, with equivalent terms in 14
documents. Available for PC, Mac OS, Android Tablets and additional languages. Also known as the International
iPad. Electrotechnical Vocabulary (IEV) online.

IEC publications search - www.iec.ch/searchpub IEC Glossary - std.iec.ch/glossary
The advanced search enables to find IEC publications by a More than 55 000 electrotechnical terminology entries in
variety of criteria (reference number, text, technical English and French extracted from the Terms and Definitions
committee,…). It also gives information on projects, replaced clause of IEC publications issued since 2002. Some entries
and withdrawn publications. have been collected from earlier publications of IEC TC 37,

77, 86 and CISPR.
IEC Just Published - webstore.iec.ch/justpublished
Stay up to date on all new IEC publications. Just Published IEC Customer Service Centre - webstore.iec.ch/csc
details all new publications released. Available online and If you wish to give us your feedback on this publication or
also once a month by email. need further assistance, please contact the Customer Service
Centre: csc@iec.ch.
A propos de l'IEC
La Commission Electrotechnique Internationale (IEC) est la première organisation mondiale qui élabore et publie des
Normes internationales pour tout ce qui a trait à l'électricité, à l'électronique et aux technologies apparentées.

A propos des publications IEC
Le contenu technique des publications IEC est constamment revu. Veuillez vous assurer que vous possédez l’édition la
plus récente, un corrigendum ou amendement peut avoir été publié.

Catalogue IEC - webstore.iec.ch/catalogue Electropedia - www.electropedia.org
Application autonome pour consulter tous les renseignements
Le premier dictionnaire en ligne de termes électroniques et
bibliographiques sur les Normes internationales,
électriques. Il contient plus de 30 000 termes et définitions en
Spécifications techniques, Rapports techniques et autres
anglais et en français, ainsi que les termes équivalents dans
documents de l'IEC. Disponible pour PC, Mac OS, tablettes
14 langues additionnelles. Egalement appelé Vocabulaire
Android et iPad.
Electrotechnique International (IEV) en ligne.

Recherche de publications IEC - www.iec.ch/searchpub
Glossaire IEC - std.iec.ch/glossary
La recherche avancée permet de trouver des publications IEC Plus de 55 000 entrées terminologiques électrotechniques, en
en utilisant différents critères (numéro de référence, texte, anglais et en français, extraites des articles Termes et
comité d’études,…). Elle donne aussi des informations sur les Définitions des publications IEC parues depuis 2002. Plus
projets et les publications remplacées ou retirées. certaines entrées antérieures extraites des publications des

CE 37, 77, 86 et CISPR de l'IEC.
IEC Just Published - webstore.iec.ch/justpublished

Service Clients - webstore.iec.ch/csc
Restez informé sur les nouvelles publications IEC. Just
Published détaille les nouvelles publications parues. Si vous désirez nous donner des commentaires sur cette
Disponible en ligne et aussi une fois par mois par email. publication ou si vous avez des questions contactez-nous:
csc@iec.ch.
IEC 61851-23 ®
Edition 1.0 2014-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Electric vehicle conductive charging system –

Part 23: DC electric vehicle charging station

Système de charge conductive pour véhicules électriques –

Partie 23: Borne de charge en courant continu pour véhicules électriques

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX XC
ICS 43.120 ISBN 978-2-8322-1440-4

– 2 – IEC 61851-23:2014 © IEC 2014
CONTENTS
FO R EW O RD . 4
INT R O D UCT IO N . 6
1 Sc op e . . 7
2 Normative references . 7
3 Terms and definitions . 8
4 General requirements . 10
5 Rating of the supply a.c. voltage . 10
6 General system requirement and interface . 10
7 Protection against electric shock . 18
8 Connection between the power supply and the EV. 19
9 Specific requirements for vehicle coupler . 20
10 Charging cable assembly requirements . 21
11 EVSE requirements . 21
101 Specific requirements for d.c. EV charging station . 24
102 Communication between EV and d.c. EV charging station . 29
Annex AA (normative) DC EV charging station of system A . 33
Annex BB (normative) DC EV charging station of system B . 47
Annex CC (normative) DC EV charging station of system C (Combined charging
s ys t em ) . 55
Annex DD (informative) Typical d.c. charging systems . 70
Annex EE (informative) Typical configuration of d.c. charging system . 75
Bibliography . 76

Figure 101 − Overvoltage protection in case of earth fault . 16
Figure 102 − Measuring network of touch current weighted for perception or reaction . 23
Figure 103 − Step response for constant value control . 26
Figure 104 − Current ripple measurement equipment with capacitor . 27
Figure 105 – Maximum ratings for voltage dynamics . 28
Figure AA.1 − Overall schematic of system A station and EV . 34
Figure AA.2 − Interface circuit for charging control of system A station . 35
Figure AA.3 − Failure detection principle by detection of d.c. leakage current . 38
Figure AA.4 − Example of vehicle connector latch and lock monitoring circuit . 40
Figure AA.5 − State transition diagram of charging process for system A . 43
Figure AA.6 − Sequence diagram of system A . 44
Figure AA.7 − Charging current value requested by the vehicle . 45
Figure AA.8 − Output response performance of d.c. EV charging station . 46
Figure BB.1 − Schematic diagram for basic solution for d.c. charging system . 47
Figure BB.2 − Sequence diagram of charging process . 52
Figure BB.3 − Operation flow chart of start charging . 53
Figure BB.4 − Operation flow chart of stop charging . 54

Figure CC.1 − Sequence diagram for normal start up . 57
Figure CC.2 − Sequence diagram and description for normal shutdown . 59
Figure CC.3 – Sequence diagram for d.c. supply initiated emergency shutdown . 61
Figure CC.4 – Sequence diagram for EV initiated emergency shutdown. 63
Figure CC.5 − Special components for configurations CC and EE coupler . 66
Figure CC.6 − System schematics of combined d.c. charging system. 68
Figure D.1 − Example of typical isolated system . 70
Figure D.2 – Example of typical non-isolated system . 71
Figure D.3 − Example of simplified isolated system . 71
Figure D.4 − Example of DC mains system . 72
Figure E.1 − Typical configuration of d.c. charging system . 75

Table 101 − Current ripple limit of d.c. EV charging station . 27
Table 102 − Charging state of d.c. EV charging station . 30
Table 103 − Charging control process of d.c. EV charging station at system action level . 31
Table AA.1 − Definition of symbols in Figure AA.1 and Figure AA.2 . 36
Table AA.2 − Parameters and values for interface circuit in Figure AA.2 . 37
Table AA.3 − Principle of fault protection . 37
Table AA.4 − Requirements for earth fault monitoring . 39
Table AA.5 − Recommended specification of charging current requested by the vehicle . 45
Table AA.6 − Requirements for the output response performance of d.c. EV charging
station . 45
Table BB.1 − Definitions of charging states . 50
Table BB.2 − Recommended parameters of d.c. charging security system . 51
Table CC.1 − DC couplers and maximum system output voltage for combined charging
s ystem . 55
Table CC.2 − Definition of proximity resistor for configurations DD and FF . 55
Table CC.3 − Sequence description for normal start up . 58
Table CC.4 − Sequence description for normal shutdown . 60
Table CC.5 − Definition and description of symbols / terms . 69
Table D.1 − Example for categories of d.c. supply system to electric vehicles . 73
Table D.2 − Typical voltage ranges for isolat
...