EN IEC 61851-25:2021

Electric vehicle conductive charging system - Part 25: DC EV supply equipment where protection relies on electrical separation

This document applies to the DC EV supply equipment for charging electric road vehicles with a rated supply voltage of up to 480 V AC or up to 600 V DC, with rated output voltage not exceeding 120 V DC and output currents not exceeding 100 A DC. This document provides the requirements for the DC EV supply equipment where the secondary circuit is protected from the primary circuit by electrical separation. Requirements for bi-directional power flow are not covered in this document. This document also provides the requirements for the control and the communication between DC EV supply equipment and an EV. This document also applies to DC EV supply equipment supplied from on-site storage systems. The aspects covered in this document include: - characteristics and operating conditions of the DC EV supply equipment; - specification of the connection between the DC EV supply equipment and the EV; - requirements for electrical safety for the DC EV supply equipment. Additional requirements can apply to equipment designed for specific environments or conditions, for example: - DC EV supply equipment located in hazardous areas where flammable gas or vapour and/or combustible materials, fuels or other combustible, or explosive materials are present; - DC EV supply equipment designed to be installed at an altitude of more than 2 000 m; - DC EV supply equipment intended to be used on-board ships. Requirements for electrical devices and components used in DC EV supply equipment are not included in this document and are covered by their specific product standards. This document does not apply to: - safety aspects related to maintenance; - charging of trolley buses, rail vehicles, industrial trucks and vehicles designed primarily for use off-road; - equipment on the EV; - EMC requirements for equipment on the EV while connected, which are covered in IEC 61851-21-1; - charging the RESS off-board the EV. NOTE In the following countries electrical separation can only be handled by skilled people: CH

Konduktive Ladesysteme für Elektrofahrzeuge - Teil 25: Gleichstromversorgungseinrichtungen für Elektrofahrzeuge, deren Schutz auf elektrischer Schutztrennung beruht

Systeme de charge par conduction pour vehicules electriques – Partie 25: Système d'alimentation en courant continu pour véhicules électriques dont la protection s'appuie sur la séparation électrique

L'IEC 61581-25:2020 s'applique aux systèmes d'alimentation en courant continu pour VE pour la charge des véhicules électriques destinés à circuler sur la voie publique, avec une tension d'alimentation assignée maximale de 480 V en courant alternatif ou de 600 V en courant continu, une tension de sortie assignée maximale de 120 V en courant continu et des courants de sortie continus maximaux de 100 A. Le présent document fournit les exigences relatives aux systèmes d'alimentation en courant continu pour VE dont le circuit secondaire est protégé du circuit primaire par une séparation électrique. Les exigences relatives au flux de puissance bidirectionnel ne sont pas traitées dans le présent document. Le présent document fournit également les exigences relatives à la commande et à la communication entre un système d'alimentation en courant continu pour VE et un VE. Le présent document s'applique également aux systèmes d'alimentation en courant continu pour VE alimentés par des systèmes de stockage sur site. Les aspects couverts par le présent document incluent: • les caractéristiques et les conditions de fonctionnement du système d'alimentation en courant continu pour VE; • la spécification de la connexion entre le système d'alimentation en courant continu pour VE et le VE; • les exigences relatives à la sécurité électrique du système d'alimentation en courant continu pour VE. Des exigences supplémentaires peuvent s'appliquer au matériel conçu pour des environnements ou conditions spécifiques, par exemple: • les systèmes d'alimentation en courant continu pour VE situés dans des zones dangereuses contenant du gaz ou de la vapeur inflammable et/ou des matières combustibles, des carburants ou d'autres combustibles, ou des matières explosives; • les systèmes d'alimentation en courant continu pour VE conçus pour être installés à au moins 2 000 m d'altitude; • les systèmes d'alimentation en courant continu pour VE destinés à être utilisés à bord de navires. Les exigences relatives aux appareils et composants électriques utilisés dans le système d'alimentation en courant continu pour VE ne sont pas incluses dans le présent document et sont couvertes par leurs normes de produits spécifiques. Le présent document ne s'applique pas: • aux aspects de sécurité relatifs à la maintenance; • à la charge des trolleybus, des véhicules ferroviaires, des chariots de manutention et des véhicules principalement tout-terrain; • au matériel installé sur le VE; • aux exigences CEM du matériel installé sur le VE connecté, qui sont couvertes par l'IEC 61851-21-1; • à la charge du RESS hors du VE.

Sistem kabelskega napajanja električnih vozil - 23-2. del: Oprema za enosmerno napajanje EV, kjer varnost zagotavlja električno ločevanje

General Information

• Status: Published
• Publication Date: 21-Jan-2021
• ICS: 43.120 - Electric road vehicles
• Technical Committee: CLC/TC 69X - Electrical systems for electric road vehicles
• Drafting Committee: IEC/TC 69 - IEC_TC_69
• Current Stage: 6060 - Document made available - Publishing
• Start Date: 22-Jan-2021
• Completion Date: 22-Jan-2021
• Ref Project: SIST EN IEC 61851-25:2021 - Electric vehicle conductive charging system - Part 23-2: DC EV supply equipment where protection relies on electrical separation

Standards Content (Sample)

SLOVENSKI STANDARD
01-marec-2021
Sistem kabelskega napajanja električnih vozil - 23-2. del: Oprema za enosmerno
napajanje EV, kjer varnost zagotavlja električno ločevanje
Electric vehicle conductive charging system - Part 23-2: DC EV supply equipment where
protection relies on electrical separation
Ta slovenski standard je istoveten z: EN IEC 61851-25:2021
ICS:
43.120 Električna cestna vozila Electric road vehicles
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN IEC 61851-25

NORME EUROPÉENNE
EUROPÄISCHE NORM
January 2021
ICS 43.120
English Version
Electric vehicle conductive charging system - Part 25: DC EV
supply equipment where protection relies on electrical separation
(IEC 61851-25:2020)
Systeme de charge par conduction pour vehicules Konduktive Ladesysteme für Elektrofahrzeuge - Teil 25:
electriques - Partie 25: Système d'alimentation en courant Gleichstromversorgungseinrichtungen für Elektrofahrzeuge
continu pour véhicules électriques dont la protection bei denen der Schutz von der elektrischen Trennung
s'appuie sur la séparation électrique abhängt
(IEC 61851-25:2020) (IEC 61851-25:2020)
This European Standard was approved by CENELEC on 2021-01-08. CENELEC 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 CENELEC 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 CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2021 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 61851-25:2021 E

European foreword
The text of document 69/735/FDIS, future edition 1 of IEC 61851-25, prepared by IEC/TC 69
"Electrical power/energy transfer systems for electrically propelled road vehicles and industrial trucks"
was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN IEC 61851-
25:2021.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2021-10-08
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2024-01-08
document have to be withdrawn
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
Endorsement notice
The text of the International Standard IEC 61851-25:2020 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards
indicated:
IEC 61851-21-1 NOTE Harmonized as EN 61851-21-1
IEC 61851-23 NOTE Harmonized as EN 61851-23
IEC 61851-24:2014 NOTE Harmonized as EN 61851-24:2014 (not modified)
ISO 18246:2015 NOTE Harmonized as EN ISO 18246:2017 (not modified)
Annex ZA
(normative)
Normative references to international publications with their
corresponding European publications
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.
NOTE 1  Where an International Publication has been modified by common modifications, indicated by (mod),
the relevant EN/HD applies.
NOTE 2  Up-to-date information on the latest versions of the European Standards listed in this annex is available
here: www.cenelec.eu.
Annex ZA of EN IEC 61851-1:2019 is applicable except as follows:
Add the following references:
Publication Year Title EN/HD Year
IEC 60068-2-30 2005 Environmental testing - Part 2-30: Tests EN 60068-2-30 2005
- Test Db: Damp heat, cyclic (12 h + 12
h cycle)
IEC 61140 2016 Protection against electric shock - EN 61140 2016
Common aspects for installation and
equipment
IEC 61180 2016 High-voltage test techniques for low- EN 61180 2016
voltage equipment - Definitions, test and
procedure requirements, test equipment
IEC 61439-7 2018 Low-voltage switchgear and controlgear - -
assemblies - Part 7: Assemblies for
specific applications such as marinas,
camping sites, market squares, electric
vehicle charging stations
IEC 61851-1 2017 Electric vehicle conductive charging EN IEC 61851-1 2019
system - Part 1: General requirements
IEC 62477-1 2012 Safety requirements for power EN 62477-1 2012
electronic converter systems and
equipment - Part 1: General
- - + A11 2014
- - + A12 2021
IEC 62893-4-1 2020 Charging cables for electric vehicles of - -
rated voltages up to and including 0,6/1
kV - Part 4-1: Cables for DC charging
according to mode 4 of IEC 61851-1 -
DC charging without use of a thermal
management system
Publication Year Title EN/HD Year
ISO 3297 2017 Information and documentation - - -
International standard serial number
(ISSN)
ISO 11898-1 2015 Road vehicles - Controller area network - -
(CAN) - Part 1: Data link layer and
physical signalling
ISO 11898-2 2016 Road vehicles - Controller area network - -
(CAN) - Part 2: High-speed medium
access unit
IEC 61851-25 ®
Edition 1.0 2020-12
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Electric vehicle conductive charging system –

Part 25: DC EV supply equipment where protection relies on electrical

separation
Systeme de charge par conduction pour vehicules electriques –

Partie 25: Système d'alimentation en courant continu pour véhicules électriques

dont la protection s'appuie sur la séparation électrique

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 43.120 ISBN 978-2-8322-9122-1

– 2 – IEC 61851-25:2020 © IEC 2020
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 8
3 Terms and definitions . 8
4 General requirements . 10
5 Classification . 11
6 Charging modes and functions . 11
7 Communications . 17
8 Protection against electric shock . 18
9 Conductive electrical interface requirements. 19
10 Requirements for adaptors . 20
11 Cable assembly requirements . 20
12 EV supply equipment constructional requirements and tests . 21
13 Overload and short-circuit protection . 26
14 Automatic reclosing of protective devices . 27
15 Emergency switching or disconnect (optional) . 27
16 Marking and instructions . 27
Annex AA (normative)  Interface between DC EV supply equipment and EV . 29
Annex BB (normative) Level, timing and tolerance of DC output current and DC output
voltage . 32
Annex CC (normative) Description of test equipment, test reporting and test
environment . 38
Annex DD (normative) Compliance tests . 42
Annex EE (normative) Energy transfer process and communication . 51
Annex FF (normative) Digital communication for control of energy transfer . 57
Bibliography . 65

Figure 1 – Measuring network for touch current evaluation weighted for perception or
reaction . 24
Figure 2 – Example of warning label . 28
Figure AA.1 – Interface circuit for energy transfer control showing isolation barriers . 31
Figure BB.1 – Step response for constant value control . 33
Figure BB.2 – Example of DC output current flow controlled by the DC EV supply
equipment and the corresponding terminal voltage using a simple battery model . 35
Figure BB.3 – Example of current limiting followed by voltage limiting for resistive load . 36
Figure CC.1 – Example of test circuit for DUT using a computer and external EV
simulation circuit . 38
Figure CC.2 – Example of test load . 39
Figure CC.3 – Operation points . 41
Figure EE.1 − State transition diagram of charging process . 53
Figure EE.2 – Sequence diagram of energy transfer . 54
Figure FF.1 – Transmission cycle . 57

IEC 61851-25:2020 © IEC 2020 – 3 –
Table 1 – Normal shutdown events and conditions . 16
Table 2 – Error shutdown events and conditions . 16
Table AA.1 – Voltage of control pilot circuit . 29
Table AA.2 – Parameter values for interface circuit . 31
Table BB.1 – Requirements for the output response performance of DC EV supply
equipment . 34
Table BB.2 – Current ripple limit of DC EV supply equipment. 37
Table DD.1 – Correspondence between requirements and test descriptions . 42
Table DD.2 – Initial switch and parameter values for a normal start-up sequence . 43
Table DD.3 – The test value for control pilot circuit . 46
Table DD.4 – Shutdown requirements . 49
Table EE.1– Energy transfer state of DC EV supply equipment . 51
Table FF.1 – Physical/data link layer specification . 57
Table FF.2 – Received parameters during energy transfer (1 of 3) . 59
Table FF.3 – Transmitted parameters during DC charging (1 of 2) .
...