IEC 62752:2024

IEC 62752 ®
Edition 2.0 2024-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
In-cable control and protection device (IC-CPD) for mode 2 charging of electric
road vehicles
Dispositif de contrôle et de protection intégré au câble (IC-CPD) pour la charge
en mode 2 des 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 Secretariat Tel.: +41 22 919 02 11
3, rue de Varembé info@iec.ch
CH-1211 Geneva 20 www.iec.ch
Switzerland
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 corrigendum or an amendment might have been published.

IEC publications search - webstore.iec.ch/advsearchform IEC Products & Services Portal - products.iec.ch
The advanced search enables to find IEC publications by a Discover our powerful search engine and read freely all the
variety of criteria (reference number, text, technical publications previews, graphical symbols and the glossary.
committee, …). It also gives information on projects, replaced With a subscription you will always have access to up to date
and withdrawn publications. content tailored to your needs.

IEC Just Published - webstore.iec.ch/justpublished
Electropedia - www.electropedia.org
Stay up to date on all new IEC publications. Just Published
The world's leading online dictionary on electrotechnology,
details all new publications released. Available online and once
containing more than 22 500 terminological entries in English
a month by email.
and French, with equivalent terms in 25 additional languages.

Also known as the International Electrotechnical Vocabulary
IEC Customer Service Centre - webstore.iec.ch/csc
(IEV) online.
If you wish to give us your feedback on this publication or need

further assistance, please contact the Customer Service
Centre: sales@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.

Recherche de publications IEC -  IEC Products & Services Portal - products.iec.ch
webstore.iec.ch/advsearchform Découvrez notre puissant moteur de recherche et consultez
La recherche avancée permet de trouver des publications IEC gratuitement tous les aperçus des publications, symboles
en utilisant différents critères (numéro de référence, texte, graphiques et le glossaire. Avec un abonnement, vous aurez
comité d’études, …). Elle donne aussi des informations sur les toujours accès à un contenu à jour adapté à vos besoins.
projets et les publications remplacées ou retirées.

Electropedia - www.electropedia.org
IEC Just Published - webstore.iec.ch/justpublished
Le premier dictionnaire d'électrotechnologie en ligne au monde,
Restez informé sur les nouvelles publications IEC. Just
avec plus de 22 500 articles terminologiques en anglais et en
Published détaille les nouvelles publications parues.
français, ainsi que les termes équivalents dans 25 langues
Disponible en ligne et une fois par mois par email.
additionnelles. Egalement appelé Vocabulaire

Electrotechnique International (IEV) en ligne.
Service Clients - webstore.iec.ch/csc

Si vous désirez nous donner des commentaires sur cette
publication ou si vous avez des questions contactez-nous:
sales@iec.ch.
IEC 62752 ®
Edition 2.0 2024-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
In-cable control and protection device (IC-CPD) for mode 2 charging of electric

road vehicles
Dispositif de contrôle et de protection intégré au câble (IC-CPD) pour la charge

en mode 2 des véhicules électriques

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.120.50  ISBN 978-2-8322-8434-6

– 2 – IEC 62752:2024 © IEC 2024
CONTENTS
FOREWORD . 10
INTRODUCTION . 12
1 Scope . 13
2 Normative references . 14
3 Terms and definitions . 16
3.1 Terms and definitions relating to plugs and socket-outlets . 16
3.2 Terms and definitions relating to terminals . 18
3.3 Terms and definitions relating to residual current functions . 18
3.3.1 Terms and definitions relating to currents flowing from live parts to
earth . 18
3.3.2 Terms and definitions relating to the energization of the residual current
function . 19
3.3.3 Terms and definitions relating to the operation and to the functions of
the IC-CPD . 19
3.3.4 Terms and definitions relating to values and ranges of energizing
quantities . 21
3.3.5 Terms and definitions relating to values and ranges of influencing
quantities . 23
3.3.6 Terms and definitions relating to conditions of operation . 23
3.3.7 Terms and definitions relating to control functions between electric
vehicle and IC-CPD . 23
3.4 Terms and definitions relating to tests . 24
3.5 Terms and definitions relating to construction . 24
4 Classification . 24
4.1 According to the supply . 24
4.1.1 General . 24
4.1.2 IC-CPD supplied from one phase and neutral and from two phases
(LNSE/LLSE or LNE/LLE) . 24
4.1.3 IC-CPD supplied from three phases and neutral (LLLNSE or LLLNE) . 25
4.2 According to the construction . 25
4.2.1 General . 25
4.2.2 IC-CPD including the function box separated from the plug and vehicle
connector . 25
4.2.3 Modular IC-CPD . 25
4.3 According to the method of connecting the cable(s) . 25
4.3.1 General . 25
4.3.2 Non-rewirable IC-CPDs . 25
4.3.3 IC-CPDs wired by the manufacturer . 25
4.3.4 Pluggable IC-CPD . 25
4.4 Classification according to the protective conductor path . 26
4.4.1 General . 26
4.4.2 IC-CPDs with switched protective conductor . 26
4.4.3 IC-CPDs with non-switched protective conductor . 26
4.5 Classification according to the verification of availability of the upstream
protective conductor . 26
4.5.1 General . 26
4.5.2 IC-CPD with verification of the availability of the upstream protective
conductor . 26

4.5.3 IC-CPD without verification of the availability of the upstream protective
conductor . 26
4.6 Classification according to the usage . 26
4.6.1 IC-CPD for portable use . 26
4.6.2 IC-CPD for wall mounting . 26
4.6.3 IC-CPD for portable use and for wall mounting . 26
5 Characteristics of IC-CPDs . 27
5.1 Summary of characteristics . 27
5.2 Rated quantities and other characteristics . 27
5.2.1 Rated voltages . 27
5.2.2 Rated current (I ) . 27
n
5.2.3 Rated residual operating current (I ) . 28
∆n
5.2.4 Rated residual non-operating current (I ) . 28
∆no
5.2.5 Rated frequency . 28
5.2.6 Rated making and breaking capacity (I ) . 28
m
5.2.7 Rated residual making and breaking capacity (I ) . 28
∆m
5.2.8 Operating characteristics in case of residual currents comprising a DC
component . 28
5.2.9 Insulation coordination including creepage distances and clearances . 28
5.2.10 Coordination with short-circuit protection devices (SCPDs) . 28
5.3 Standard and preferred values . 29
5.3.1 Preferred values of rated operational voltage (U ) . 29
e
5.3.2 Preferred values of rated current (I ) . 29
n
5.3.3 Standard values of rated residual operating current (I ) . 29
∆n
5.3.4 Standard value of rated residual non-operating current (I ) . 30
∆no
5.3.5 Standard minimum value of the non-operating overcurrent through the
IC-CPD . 30
5.3.6 Preferred values of rated frequency . 30
5.3.7 Minimum value of the rated making and breaking capacity (I ) . 30
m
5.3.8 Minimum value of the rated residual making and breaking capacity
(I ) . 30
∆m
5.3.9 Standard value of the rated conditional short-circuit current (I ) . 30
nc
5.3.10 Standard value of the rated conditional residual short-circuit current
(I ) . 30
∆c
5.3.11 Limit values of break time . 30
6 Marking and other product information . 31
6.1 Data to be marked on the IC-CPD . 31
6.2 Information to be provided to the end-user . 33
7 Standard conditions for operation in service and for installation . 33
7.1 Standard conditions . 33
7.2 Conditions for installations . 34
8 Requirements for construction and operation . 34
8.1 Mechanical design . 34
8.2 Pluggable electrical connections of pluggable IC-CPDs according to 4.3.4 . 35
8.2.1 General . 35
8.2.2 Degree of protection of pluggable electrical connection against solid

foreign objects and against water for pluggable IC-CPD . 36

– 4 – IEC 62752:2024 © IEC 2024
8.2.3 Breaking capacity of pluggable electrical connection for pluggable IC-
CPD . 36
8.3 Construction . 37
8.3.1 General . 37
8.3.2 Terminations of IC-CPDs . 38
8.3.3 Enclosure of IC-CPDs according to 4.3.3 . 38
8.3.4 Terminal screws or nuts of IC-CPDs according to 4.3.3 . 38
8.3.5 Strain on the conductors of IC-CPDs according to 4.3.3 . 38
8.3.6 Additional requirements for IC-CPDs according to 4.3.3. 39
8.3.7 Insulating parts which retain live parts in position . 39
8.3.8 Screws for IC-CPD according to 4.3.3 . 39
8.3.9 Means for suspension from a wall or other mounting surfaces . 39
8.3.10 Plug as an integral part of direct plug-in equipment . 39
8.3.11 Flexible cables and cords and their connection . 40
8.4 Electrical performance . 40
8.4.1 Protective conductor path . 40
8.4.2 Contact mechanism . 41
8.4.3 Clearances and creepage distances (see Annex C) . 41
8.5 Protection against electric shock . 44
8.5.1 General . 44
8.5.2 Requirements relating to plugs, whether incorporated or not in integral
items . 44
8.5.3 Degree of protection of the function box . 44
8.5.4 Requirements relating to vehicle connectors . 45
8.6 Dielectric properties . 45
8.7 Temperature rise . 45
8.8 Operating characteristics . 45
8.8.1 General . 45
8.8.2 Safe connection operating characteristics . 46
8.8.3 Operating characteristics with AC residual currents and residual
currents having a DC component . 46
8.8.4 Operating characteristics with smooth DC residual current . 46
8.8.5 Behaviour of the IC-CPD after a residual current operation . 46
8.8.6 Residual pulsating direct currents which may result from rectifying
circuits supplied from two phases . 46
8.8.7 Residual pulsating direct currents which may result from rectifying
circuits supplied from three phases . 47
8.9 Mechanical and electrical endurance . 47
8.10 Performance at short-circuit currents . 47
8.11 Resistance to mechanical shock and impact . 47
8.12 Resistance to heat . 47
8.13 Resistance to abnormal heat and to fire . 47
8.14 Performance of the test function . 48
8.15 Behaviour in the event of loss of the supply voltage . 48
8.16 Resistance of IC-CPDs against unwanted tripping due to surge currents to
earth resulting from impulse voltages . 48
8.17 Control pilot function controller . 48
8.18 Reliability . 49
8.19 Resistance to tracking . 49
8.20 Electromagnetic compatibility (EMC) . 49

8.21 Behaviour of the IC-CPD at low ambient air temperature. 49
8.22 Operation with supply failure and hazardous live protective conductor
conditions . 49
8.23 Verification of a standing current in the protective conductor in normal
service . 49
8.24 Behaviour at specific environmental conditions . 50
8.25 Resistance to vibration and shock . 50
9 Tests . 50
9.1 General . 50
9.1.1 Opening and closing of contacts . 50
9.1.2 Type tests . 50
9.1.3 Test sequences . 51
9.1.4 Routine tests . 52
9.2 Test conditions . 52
9.3 Test of indelibility of marking . 52
9.4 Verification of protection against electric shock . 53
9.5 Test of dielectric properties . 53
9.5.1 Resistance to humidity . 53
9.5.2 Insulation resistance of the main circuit . 54
9.5.3 Dielectric strength of the main circuit . 55
9.5.4 Secondary circuit of detection transformers . 55
9.5.5 Verification of impulse withstand voltages (across clearances and
across solid insulation) and of leakage current across open contacts . 55
9.6 Temperature-rise test . 58
9.6.1 Test conditions . 58
9.6.2 Test procedure . 59
9.6.3 Measurement of the temperature rise of different parts . 59
9.6.4 Temperature rise of a part . 59
9.7 Verification of the operating characteristics . 59
9.7.1 Test circuit . 59
9.7.2 Residual sinusoidal alternating currents tests . 60
9.7.3 Verification of the correct operation with residual currents having a DC
component . 62
9.7.4 Verification of behaviour in the event of composite residual current . 63
9.7.5 Verification of the correct operation in the event of smooth DC residual
current . 65
9.7.6 Miswiring and supply failure tests . 65
9.7.7 Verification of protective conductor contact behaviour . 69
9.7.8 Verification that the protective conductor is connected to the electric

vehicle . 69
9.7.9 Verification of standing current in the protective conductor connection in
normal service . 70
9.7.10 Verification of the correct operation in the event of residual direct
currents which may result from rectifying circuits supplied from two
phases. 70
9.7.11 Verification of the correct operation in case of residual direct currents
which may result from rectifying circuits supplied from three phases . 70
9.8 Verification of mechanical and electrical endurance . 71
9.8.1 Endurance of plug and vehicle connector part . 71
9.8.2 Endurance of the residual current function of the IC-CPD . 71
9.9 Verification of the behaviour of the IC-CPD under overcurrent conditions . 73

– 6 – IEC 62752:2024 © IEC 2024
9.9.1 List of the overcurrent tests . 73
9.9.2 Short-circuit tests . 73
9.9.3 Verification of the making and breaking capacity of the plug of the IC-
CPD . 78
9.10 Verification of resistance to mechanical shock and impact . 78
9.10.1 General . 78
9.10.2 Drop test . 79
9.10.3 Test for screwed glands of IC-CPDs . 79
9.10.4 Mechanical strength test on IC-CPDs provided with cords . 80
9.10.5 Mechanical impact test and shock test . 80
9.11 Test of resistance to heat . 80
9.11.1 General . 80
9.11.2 Temperature test in heating cabinet . 80
9.11.3 Ball pressure test for insulating material necessary to retain in position
current-carrying parts . 81
9.11.4 Ball pressure test for insulating material not necessary to retain in
position current-carrying parts . 81
9.12 Resistance of insulating material to abnormal heat and to fire . 82
9.13 Verification of the self-test . 83
9.13.1 Test conditions . 83
9.13.2 Verification of the self-test with IC-CPD in normal operation . 83
9.13.3 Verification of the self-test with simulated welded contacts of IC-CPD . 83
9.14 Verification of the behaviour of IC-CPDs in the event of loss of the supply

voltage . 84
9.14.1 Verification of correct operation at the minimum operating voltage (U ) . 84
x
9.14.2 Verification of the automatic opening in the event of loss of the supply
voltage . 84
9.14.3 Verification of the reclosing function . 84
9.15 Verification of the limiting values of the non-operating current under

overcurrent conditions . 85
9.16 Verification of resistance against unwanted tripping due to surge currents to
earth resulting from impulse voltages . 85
9.17 Verification of reliability . 85
9.17.1 Climatic test. 85
9.17.2 Test at a temperature of 45 °C . 87
9.18 Resistance to ageing . 87
9.19 Resistance to tracking . 88
9.20 Test on pins provided with insulating sleeves . 88
9.21 Verification of the effects of strain on the conductors . 89
9.22 Checking of the torque exerted by IC-CPDs on fixed socket-outlets . 89
9.23 Tests of the cord anchorage. 89
9.24 Flexing test of non-rewirable IC-CPDs . 90
9.25 Verification of the electromagnetic compatibility (EMC) . 91
9.25.1 Emission . 91
9.25.2 Immunity . 91
9.26 Tests replacing verifications of creepage distances and clearances . 93
9.26.1 General . 93
9.26.2 Abnormal conditions . 93
9.26.3 Temperature rise resulting from fault conditions . 93
9.27 Verifications for single electronic components used in IC-CPDs . 96

9.27.1 General . 96
9.27.2 Capacitors . 96
9.27.3 Resistors and inductors . 96
9.28 Chemical loads . 96
9.29 Heat test under solar radiation . 96
9.30 Resistance to ultra-violet (UV) radiation . 97
9.31 Damp and salt mist test for marine and coastal environments . 97
9.31.1 Test for external metallic parts only . 97
9.31.2 Test criteria . 98
9.32 Vehicle drive-over . 98
9.32.1 General . 98
9.32.2 Test at crushing force 5 000 N . 98
9.32.3 Test at crushing force 11 000 N . 98
9.32.4 Performance after the tests. 98
9.33 Low storage temperature test . 99
9.34 Vibration and shock test . 99
9.35 Verification of insulating parts which keep live parts in position . 100
9.36 Verification of the thermal control device. 100
Annex A (normative) Test sequences and number of samples to be submitted for
verification of conformity to this document . 137
A.1 Verification of conformity . 137
A.2 Test sequences . 137
A.3 Number of samples to be submitted for full test procedure . 139
A.4 Number of samples to be submitted for simplified test procedures in the
case of submitting simultaneously a range of IC-CPDs of the same
fundamental design . 141
Annex B (normative) Routine tests . 143
Annex C (normative) Determination of clearances and creepage distances . 144
C.1 Overview. 144
C.2 Orientation and location of a creepage distance . 144
C.3 Creepage distances where more than one material is used . 144
C.4 Creepage distances split by a floating conductive part . 144
C.5 Measurement of creepage distances and clearances . 144
Annex D (informative) Switched-protective conductor application . 149
D.1 Explanation of switched-protective conductor (SPE) function and application . 149
D.2 Examples of incorrect supply wiring . 150
Annex E (informative) Example of IC-CPD for mode 2 charging . 153
Annex F (informative) Types of IC-CPD according to construction and assembly . 154
Annex G (informative) Methods for determination of short-circuit power factor . 155
G.1 Overview. 155
G.2 Method I – Determination from DC components . 155
G.3 Method II – Determination with pilot generator . 156
Bibliography . 157

Figure 1 – Test circuit for the verification of operating characteristic (9.7.2) . 102
Figure 2 – Verification of correct operation for hazardous live PE (see Table 14 and
Table 15) . 105
Figure 3 – Verification of temperature rise of the protective conductor . 106

– 8 – IEC 62752:2024 © IEC 2024
Figure 4 – Verification of open neutral for LNSE types, and open line for LLSE types . 107
Figure 5 – Verification of a standing current in the protective conductor in normal
service . 108
Figure 6 – Test circuit for the verification of the making and breaking capacity and the
short-circuit coordination with an SCPD (see 9.9.2) . 111
Figure 7 – Standard test wire 1,0 mm . 111
Figure 8 – Test circuit for the verification of the correct operation in the event of
residual pulsating direct currents (see 9.7.3) . 113
Figure 9 – Test circuit for the verification of the correct operation in the event of
residual pulsating direct currents superimposed by a smooth direct current (see
9.7.3.3) . 115
Figure 10 – Verification of open protective conductor (see 9.7.6.4) . 116
Figure 11 – Arrangement for compression test for verification of protection against
electric shock . 117
Figure 12 – Ball-pressure test apparatus. 117
Figure 13 – Test circuit for IC-CPD according to 4.1.2 to verify the correct operation in
the event of residual pulsating direct currents which may result from rectifying circuits

supplied from two phases . 118
Figure 14 – Tests circuit for IC-CPD according to 4.1.3 to verify the correct operation in
the event of residual pulsating direct currents which may result from rectifying circuits
supplied from three phases . 119
Figure 15 – Apparatus for testing the cord retention . 120
Figure 16 – Apparatus for flexing test . 121
Figure 17 – Arrangement for mechanical strength test on IC-CPDs provided with cords
(9.10.4) . 121
Figure 18 – Stabilizing period for reliability test (9.17.1.3) . 122
Figure 19 – Reliability test cycle (9.17.1.3) . 123
Figure 20 – Example for test circuit for verification of ageing of electronic components
(9.18) . 124
Figure 21 – Current ring wave 0,5 µs/100 kHz . 124
Figure 22 – Example of test circuit for the verification of resistance to unwanted
tripping . 125
Figure 23 – Minimum creepage distances and clearances as a function of peak value

of voltage (see 9.26.3 a)) . 126
Figure 24 – Minimum creepage distances and clearances as a function of peak value
of operating voltage (see 9.26.3 a)) . 127
Figure 25 – Test cycle for low temperature test . 127
Figure 26 – Test circuit for verification of connection of protective conductor to the EV,
according to 9.7.8 . 128
Figure 27 – Verification of correct operation in the event of smooth DC leakage
current, according to 9.7.5 . 129
Figure 28 – Example of a test circuit for the verification of correct operation in the
event of residual sinusoidal alternating currents composed of multi-frequency
components . 130
Figure 29 – Test circuit for endurance test according to 9.8 . 131
Figure 30 – The use of the IC-CPD . 132
Figure 31 – Informative wave shape of inrush current for tests according to 9.8.2 . 132
Figure 32 – Standard test finger . 133
Figure 33 – Small parts . 134

Figure 34 – Test circuit for the verification of the self-test (9.13) . 135
Figure 35 – Arrangement for verification of the thermal control device . 136
Figure D.1 – Examples of incorrect supply wirings for LLSE types . 151
Figure D.2 – Examples of incorrect supply wirings for LNSE types . 152
Figure E.1 – Example for IC-CPD showing the different parts and functions . 153
Figure F.1 – Example of IC-CPD including function box, cables, plug and connector in
accordance with 4.2.2 . 154
Figure F.2 – Example of modular IC-CPD in accordance with 4.2.3 a) . 154
Figure F.3 –
...