Low-voltage electrical installations - Part 7-722: Requirements for special installations or locations - Supplies for electric vehicles

IEC 60364-7-722:2018 is now available as IEC 60364-7-722:2018 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.
IEC 60364-7-722:2018 applies to:
• circuits intended to supply energy to electric vehicles, and
• circuits intended for feeding back electricity from electric vehicles.
Circuits covered by this document are terminated at the connecting point.
This edition includes the following significant technical changes with respect to the previous edition:
a) introduction of requirements for electrical installations incorporating wireless power transfer systems;
b) clarification of the requirements regarding the protective measure placing out of reach in order to allow the use of pantographs in areas accessible to the public;
c) introduction of requirements covering the case where the EV may operate as a source in parallel with other sources.
NOTE 1 The requirements for EV supply equipment for conductive charging and the relevant charging modes are described in IEC 61851 (all parts). The requirements for EV supply equipment for wireless power transfer are described in IEC 61980 (all parts).
NOTE 2 IEC 60364-7-722 does not cover the assessment of the risk of explosion due to the possible production of hydrogen/other flammable gases during the battery recharging phase.

Installations électriques à basse tension - Partie 7-722: Exigences pour les installations et emplacements spéciaux - Alimentation des véhicules électriques

IEC 60364-7-722:2018 est disponible sous forme de IEC 60364-7-722:2018 RLV qui contient la Norme internationale et sa version Redline, illustrant les modifications du contenu technique depuis l'édition précédente.
L'IEC 60364-7-722:2018 est applicables:
• aux circuits destinés à fournir de l'énergie aux véhicules électriques, et
• aux circuits destinés à réinjecter de l’électricité provenant de véhicules électriques.
Les circuits couverts par le présent document se terminent au point de connexion.
Cette deuxième édition annule et remplace la première édition parue en 2015. Cette édition constitue une révision technique.
Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
a) introduction des exigences relatives aux installations électriques comprenant des systèmes de transfert d'énergie sans fil;
b) clarification des exigences relatives aux mesures de protection de mise hors de portée par éloignement, afin de permettre l’utilisation de pantographes dans les zones accessibles au public;
c) introduction des exigences couvrant le cas dans lequel le VE peut fonctionner en tant que source en parallèle avec d’autres sources.
NOTE 1 Les exigences relatives au système d’alimentation pour VE pour la charge conductive et les modes de charge appropriés sont décrites dans l'IEC 61851 (toutes les parties). Les exigences relatives au système d’alimentation pour VE pour le transfert d’énergie sans fil sont décrites dans l'IEC 61980 (toutes les parties).
NOTE 2 IEC 60364-7-722 ne couvre pas l’appréciation du risque d’explosion dû à la possible production d’hydrogène ou d’autres gaz inflammables lors du rechargement de la batterie.

General Information

Status
Published
Publication Date
20-Sep-2018
Current Stage
PPUB - Publication issued
Completion Date
21-Sep-2018
Ref Project

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IEC 60364-7-722
Edition 2.0 2018-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Low-voltage electrical installations –
Part 7-722: Requirements for special installations or locations – Supplies for
electric vehicles
Installations électriques à basse tension –
Partie 7-722: Exigences pour les installations et emplacements spéciaux –
Alimentation des véhicules électriques
IEC 60364-7-722:2018-09(en-fr)
---------------------- Page: 1 ----------------------
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---------------------- Page: 2 ----------------------
IEC 60364-7-722
Edition 2.0 2018-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Low-voltage electrical installations –
Part 7-722: Requirements for special installations or locations – Supplies for
electric vehicles
Installations électriques à basse tension –
Partie 7-722: Exigences pour les installations et emplacements spéciaux –
Alimentation des véhicules électriques
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 43.120; 91.140.50 ISBN 978-2-8322-6035-7

Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 3 ----------------------
– 2 – IEC 60364-7-722:2018 © IEC 2018
CONTENTS

FOREWORD ......................................................................................................................... 3

INTRODUCTION ................................................................................................................... 5

722 Supplies for electric vehicles ........................................................................................ 6

722.1 Scope ............................................................................................................ 6

722.2 Normative references ..................................................................................... 6

722.3 Terms and definitions ..................................................................................... 7

722.31 Purposes, supplies and structure .................................................................... 8

722.311 Maximum demand and diversity ...................................................................... 8

722.312 Conductor arrangement and system earthing .................................................. 9

722.314 Division of installation ..................................................................................... 9

722.4 Protection for safety ....................................................................................... 9

722.41 Protection against electric shock ..................................................................... 9

722.411 Protective measure: automatic disconnection of supply ................................... 9

722.413 Protective measure: electrical separation ...................................................... 10

722.44 Protection against voltage disturbances and electromagnetic

disturbances ................................................................................................. 10

722.443 Protection against transient overvoltages of atmospheric origin or due to

switching ...................................................................................................... 10

722.444 Measures against electromagnetic influences ................................................ 10

722.5 Selection and erection of electrical equipment ............................................... 10

722.51 Common rules .............................................................................................. 10

722.511 Compliance with standards ........................................................................... 10

722.512 Operational conditions and external influences .............................................. 11

722.53 Selection and erection of electrical equipment – Isolation, switching and

control .......................................................................................................... 11

722.530 Introduction .................................................................................................. 11

722.531 Devices for protection against indirect contact by automatic

disconnection of supply ................................................................................ 11

722.533 Devices for protection against overcurrent .................................................... 12

722.535 Co-ordination of various protective devices ................................................... 13

722.54 Earthing arrangements and protective conductors ......................................... 13

722.543 Protective conductors ................................................................................... 13

722.55 Other equipment ........................................................................................... 13

722.551 Low voltage generating sets ......................................................................... 14

722.6 Verification ................................................................................................... 14

Annex A (informative) List of notes concerning certain countries ......................................... 16

Bibliography ....................................................................................................................... 25

---------------------- Page: 4 ----------------------
IEC 60364-7-722:2018 © IEC 2018 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
LOW-VOLTAGE ELECTRICAL INSTALLATIONS –
Part 7-722: Requirements for special installations or locations –
Supplies for electric vehicles
FOREWORD

1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising

all national electrotechnical committees (IEC National Committees). The object of IEC is to promote

international co-operation on all questions concerning standardization in the electrical and electronic fields. To

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with the International Organization for Standardization (ISO) in accordance with conditions determined by

agreement between the two organizations.

2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international

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interested IEC National Committees.

3) IEC Publications have the form of recommendations for international use and are accepted by IEC National

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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is

indispensable for the correct application of this publication.

9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of

patent rights. IEC shall not be held responsible for identifying any or all such patent rights.

International Standard IEC 60364-7-722 has been prepared by IEC technical committee 64:

Electrical installations and protection against electric shock.

This second edition cancels and replaces the first edition published in 2015. This edition

constitutes a technical revision.

This edition includes the following significant technical changes with respect to the previous

edition:

a) introduction of requirements for electrical installations incorporating wireless power

transfer systems;

b) clarification of the requirements regarding the protective measure placing out of reach in

order to allow the use of pantographs in areas accessible to the public;

c) introduction of requirements covering the case where the EV may operate as a source in

parallel with other sources.
---------------------- Page: 5 ----------------------
– 4 – IEC 60364-7-722:2018 © IEC 2018
The text of this International Standard is based on the following documents:
FDIS Report on voting
64/2285/FDIS 64/2318/RVD

Full information on the voting for the approval of this International Standard can be found in

the report on voting indicated in the above table.

This document has been drafted in accordance with the ISO/IEC Directives, Part 2.

A list of all parts in the IEC 60364 series, published under the general title Low voltage

electrical installations, can be found on the IEC website.

The reader's attention is drawn to the fact that Annex A lists all of the “in-some-country”

clauses on differing practices of a less permanent nature relating to the subject of this

standard.

The committee has decided that the contents of this document will remain unchanged until the

stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to

the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
---------------------- Page: 6 ----------------------
IEC 60364-7-722:2018 © IEC 2018 – 5 –
INTRODUCTION

For the purpose of this part of IEC 60364 (IEC 60364-7-722) the requirements of the general

Parts 1 to 6 of IEC 60364 apply.

The IEC 60364-7-7XX parts of IEC 60364 contain particular requirements for special

installations or locations which are based on the requirements of the general parts of

IEC 60364 (IEC 60364-1 to IEC 60364-6). These IEC 60364-7-7XX parts are considered in

conjunction with the requirements of the general parts.

The particular requirements of this part of IEC 60364 supplement, modify or replace certain of

the requirements of the general parts of IEC 60364 being valid at the time of publication of

this part. The absence of reference to the exclusion of a part or a clause of a general part

means that the corresponding clauses of the general part are applicable (undated reference).

Requirements of other 7XX parts being relevant for installations covered by this part also

apply. This part may therefore also supplement, modify or replace certain of these

requirements valid at the time of publication of this part.

The clause numbering of this part follows the pattern and corresponding references of

IEC 60364. The numbers following the particular number of this part are those of the

corresponding parts, or clauses of the other parts of the IEC 60364 series, valid at the time of

publication of this part, as indicated in the normative references of this document (dated

reference).

If requirements or explanations additional to those of the other parts of the IEC 60364 series

are needed, the numbering of such items appears as 722.101, 722.102, 722.103, etc.

In the case where new or amended general parts with modified numbering were published

after this part was issued, the clause numbers referring to a general part in this Part 722 may

no longer align with the latest edition of the general part. Dated references should be

observed.
---------------------- Page: 7 ----------------------
– 6 – IEC 60364-7-722:2018 © IEC 2018
LOW-VOLTAGE ELECTRICAL INSTALLATIONS –
Part 7-722: Requirements for special installations or locations –
Supplies for electric vehicles
722 Supplies for electric vehicles
722.1 Scope
The particular requirements of this document apply to
• circuits intended to supply energy to electric vehicles, and
• circuits intended for feeding back electricity from electric vehicles.
Circuits covered by this document are terminated at the connecting point.

NOTE 1 The requirements for EV supply equipment for conductive charging and the relevant charging modes are

described in IEC 61851 (all parts). The requirements for EV supply equipment for wireless power transfer are

described in IEC 61980 (all parts).

NOTE 2 This document does not cover the assessment of the risk of explosion due to the possible production of

hydrogen/other flammable gases during the battery recharging phase.
722.2 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.
IEC 60269 (all parts), Low voltage fuses

IEC 60309-1:1999, Plugs, socket-outlets and couplers for industrial purposes – Part 1:

General requirements

IEC 60309-2, Plugs, socket-outlets and couplers for industrial purposes – Part 2: Dimensional

interchangeability requirements for pin and contact-tube accessories
IEC 60364 (all parts), Low-voltage electrical installations

IEC 60364-4-41:2005, Low-voltage electrical installations – Part 4-41: Protection for safety –

Protection against electric shock
IEC 60364-4-41:2005/AMD1:2017

IEC 60364-8-2, Low-voltage electrical installations – Part 8-2: Prosumer's low-voltage

electrical installations

IEC 60898 (all parts), Electrical accessories – Circuit-breakers for overcurrent protection for

household and similar installations
IEC 60947-2, Low-voltage switchgear and controlgear – Part 2: Circuit-breakers
____________
Under preparation. Stage at the time of publication IEC RFDIS 60364-8-2:2018.
---------------------- Page: 8 ----------------------
IEC 60364-7-722:2018 © IEC 2018 – 7 –

IEC 60947-6-2, Low-voltage switchgear and controlgear – Part 6-2: Multiple function

equipment – Control and protective switching devices (or equipment) (CPS)

IEC 61008-1, Residual current circuit-breakers without integral overcurrent protection for

household and similar uses (RCCBs) – Part 1: General rules

IEC 61009-1, Residual current operated circuit-breakers with integral overcurrent protection

for household and similar uses (RCBOs) – Part 1: General rules

IEC 61557-8, Electrical safety in low voltage distribution systems up to 1 000 V a.c. and

1 500 V d.c. – Equipment for testing, measuring or monitoring of protective measures – Part 8:

Insulation monitoring devices for IT systems

IEC 61558-2-4, Safety of transformers, reactors, power supply units and similar products for

supply voltages up to 1 100 V – Part 2-4: Particular requirements and tests for isolating

transformers and power supply units incorporating isolating transformers
IEC 61851 (all parts), Electric vehicle conductive charging system
IEC 61980 (all parts), Electric vehicle wireless power transfer (WPT) systems

IEC 62196 (all parts), Plugs, socket-outlets, vehicle connectors and vehicle inlets –

Conductive charging of electric vehicles

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, Plugs, socket-outlets, vehicle connectors and vehicle inlets – Conductive

charging of electric vehicles – Part 3: Dimensional compatibility and interchangeability

requirements for d.c. and a.c./d.c. pin and contact-tube vehicle couplers

IEC TS 62196-4, Plugs, socket-outlets, vehicle connectors and vehicles inlet – Conductive

charging of electric vehicles – Part 4: Dimensional compatibility and interchangeability

requirements for DC pin and contact-tube accessories for class II or class III applications

IEC 62262, Degrees of protection provided by enclosures for electrical equipment against

external mechanical impacts (IK code)

IEC 62423, Type F and type B residual current operated circuit-breakers with and without

integral overcurrent protection for household and similar uses

IEC 62955, Residual direct current detecting device (RDC-DD) to be used for mode 3

charging of electric vehicle
722.3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminological databases for use in standardization at the following

addresses:
____________
Under preparation. Stage at the time of publication IEC TS BPUB 62196-4:2018.
---------------------- Page: 9 ----------------------
– 8 – IEC 60364-7-722:2018 © IEC 2018
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
722.3.1
electric vehicle
electric road vehicle

any vehicle propelled by an electric motor drawing current from a rechargeable energy

storage system (RESS), intended primarily for use on public roads

[SOURCE: ISO 17409:2015, 3.19, modified — "rechargeable energy storage system" has

been added.]
722.3.2
connecting point

terminating point in the fixed installation where energy is transferred to/from one electric

vehicle

EXAMPLE A socket-outlet, a vehicle connector or a wireless power transfer device.

Note 1 to entry: The connecting point may be part of the fixed installed EV supply equipment.

722.3.3
demand factor

ratio, expressed as a numerical value or as a percentage, of the maximum demand of a circuit

or a group of circuits within a specified period, to the corresponding total installed load of the

circuit(s)

Note 1 to entry: In using this term, it is necessary to specify to which level of the system it relates.

[SOURCE: IEC 60050-691:1973, 691-10-05, modified — The term "installation" has been

replaced with the term "circuit".].
722.3.4
EV charging station
stationary part of EV supply equipment connected to the supply network
[SOURCE: IEC 61851-1:2017, 3.1.5, modified — The note has been deleted.]
722.3.5
EV supply equipment

equipment or a combination of equipment, providing dedicated functions to supply electric

energy from a fixed electrical installation or supply network to an EV for the purpose of

charging
[SOURCE: IEC 61851-1:2017, 3.1.1, modified — The examples have been deleted.]
722.3.6
load control

electrical (energy) management system ensuring that the sum of load currents of dedicated

circuits does not exceed a predetermined value
722.31 Purposes, supplies and structure
722.311 Maximum demand and diversity
Add the following:
---------------------- Page: 10 ----------------------
IEC 60364-7-722:2018 © IEC 2018 – 9 –

It shall be considered that in normal use each single connecting point is used at its rated

current or at the configured maximum charging current of the charging station. The means for

configuration of the maximum charging current shall only be made by the use of a key or a

tool and only be accessible to skilled or instructed persons.

NOTE For this application the demand factor of the final circuit supplying the connecting point (e.g. the socket-

outlet) is equal to 1.

Since all the connecting points of the installation can be used simultaneously, the diversity

factor of the distribution circuit shall be taken as equal to 1 unless a load control is included in

the EV supply equipment or installed upstream or a combination of both.
722.312 Conductor arrangement and system earthing
722.312.2.1 TN systems
Add the following:

In a TN system, a circuit supplying a connecting point shall not include a PEN conductor.

722.314 Division of installation
Add the following:
722.314.101

A dedicated circuit shall be provided for the transfer of energy from/to the electric vehicle.

722.4 Protection for safety
722.41 Protection against electric shock
722.410.3 General requirements
722.410.3.5
Replace the existing text by the following:

The protective measure obstacles as specified in IEC 60364-4-41:2005, Clause B.2 shall not

be applied.

The protective measure placing out of reach, as specified in IEC 60364-4-41:2005,

Clause B.3 may only be applied where an automatic connection system in accordance with

IEC 61851-23-1 is used.
722.410.3.6
The protective measures as specified in IEC 60364-4-41:2005 and
IEC 60364-4-41:2005/AMD1:2017, Annex C shall not be applied.
722.411 Protective measure: automatic disconnection of supply
722.411.3 Requirements for fault protection
722.411.3.3 Additional protection
Replace the existing text by the following:
____________
Under consideration.
---------------------- Page: 11 ----------------------
– 10 – IEC 60364-7-722:2018 © IEC 2018

Each AC connecting point shall be individually protected by a residual current device (RCD)

with a rated residual operating current not exceeding 30 mA.

NOTE This requirement implies that this RCD is not used for protecting other connecting points or current-using

equipment.
722.413 Protective measure: electrical separation
722.413.3 Requirements for fault protection
722.413.3.2
Replace the requirements as follows:

The separated circuit shall be supplied through an isolating transformer complying with

IEC 61558-2-4, and the voltage of the separated circuit shall not exceed 500 V.
722.44 Protection against voltage disturbances and electromagnetic disturbances

722.443 Protection against transient overvoltages of atmospheric origin or due to

switching
722.443.4 Overvoltage control
Add the following after the first paragraph:

A connecting point accessible to the public is considered as part of a public service and

therefore shall be protected against transient overvoltages.
722.444 Measures against electromagnetic influences
722.444.1 General
Add the following:
722.444.1.101

The equipment for wireless power transfer shall not impair the safety and the proper

functioning of the electrical installation and shall be installed according to the manufacturer’s

instructions.
722.5 Selection and erection of electrical equipment
722.51 Common rules
722.511 Compliance with standards
Add the following:
722.511.101

For conductive power transfer, EV charging stations shall comply with the appropriate parts of

the IEC 61851 series.
722.511.102

Wireless power transfer (WPT) systems for EVs shall comply with the appropriate parts of the

IEC 61980 series.
---------------------- Page: 12 ----------------------
IEC 60364-7-722:2018 © IEC 2018 – 11 –
722.512 Operational conditions and external influences
722.512.2 External influences
Add the following:
722.512.2.101 Presence of water (AD)
When installed outdoors, the equipment shall be sele
...

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