IEC TR 62710:2015

IEC TR 62710 ®
Edition 1.0 2015-05
TECHNICAL
REPORT
Residual current devices (RCDs) associated with additional function(s)

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.

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 15
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 60 000 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and withdrawn publications.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.
IEC TR 62710 ®
Edition 1.0 2015-05
TECHNICAL
REPORT
Residual current devices (RCDs) associated with additional function(s)

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 29.200 ISBN 978-2-8322-2660-5

– 2 – IEC TR 62710:2015 © IEC 2015
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 8
4 Classification according to the association of a RCD with additional function(s) . 9
4.1 General . 9
4.2 According to the type of construction . 9
4.3 According to the interface between a RCD and additional function(s) . 9
5 Characteristics . 10
6 Marking and other product information . 10
6.1 Instructions and operation for RCDs with integrated additional function(s)
according to 4.2 a) . 10
6.2 Instructions and operation for a non integrated additional function according
to 4.2 b) . 10
7 Standard conditions for operation in service and for installation . 10
8 Requirements for construction and operation . 11
8.1 General . 11
8.2 Mechanical requirements . 12
8.3 Electrical compatibility . 12
8.4 Protection against electric shock . 12
8.5 Dielectric properties, isolating capability and insulation coordination . 12
8.6 Clearances and creepage distances. 13
8.7 Screws, current-carrying parts and connections . 13
8.8 Terminals for external conductors . 13
8.9 Temperature rise . 13
8.10 Mechanical and electrical endurance . 13
8.11 Performance at short-circuit currents . 13
8.12 Resistance to mechanical shock and impact . 14
8.13 Resistance to heat, to abnormal temperature and to fire . 14
8.14 Test device . 14
8.15 Behaviour of RCDs in the case of overcurrents in the main circuit . 14
8.16 Behaviour of RCDs in the case of current surges caused by impulse voltages . 14
8.17 Behaviour of RCDs in the case of sinusoidal residual currents and in case of
residual currents comprising a d.c. component . 14
8.18 Reliability . 15
8.19 Electromagnetic compatibility (EMC) . 15
8.20 Operating characteristics . 15
8.20.1 Operating characteristics of the RCD . 15
8.20.2 Influence of the additional function(s) on the performance of the RCD
with different conditions of supply voltage . 15
9 Tests . 16
9.1 General . 16
9.2 The additional function is integrated within the RCD according to 4.2 a) . 16
9.3 The additional function is not integrated within a declared RCD according to
4.2b) whose compliance to the relevant RCD standard is not yet tested . 17

9.4 The additional function is not integrated within a declared RCD according to
4.3 whose compliance to the relevant RCD standard is already tested . 17
9.5 Testing procedure . 17
9.5.1 General . 17
9.5.2 Impairment identification . 20
9.5.3 Impairment assessment . 21
9.5.4 Verification of the influence of the additional function(s) on the
performance of the RCD at different states of supply voltage . 23
9.6 Documentation . 24
Annex A (informative) Additional requirements and tests for RCDs consisting of a
RCD and a non integrated additional function unit designed for assembly on site . 25
A.1 General . 25
A.2 Scope . 25
A.3 Terms and definitions. 25
A.4 Marking and other product information . 25
A.4.1 Manufacturer's name or trademark . 25
A.4.2 Marking . 25
A.4.3 Instructions for assembly and operation . 26
A.5 Constructional requirements . 26
A.5.1 General . 26
A.5.2 Degree of protection . 26
A.5.3 Mechanical requirements . 26
A.5.4 Electrical compatibility . 27
A.6 Type tests and verifications . 27
A.6.1 Tests on RCDs . 27
A.6.2 Tests on non integrated additional function unit to be assembled on site . 27
A.6.3 Tests on assembled RCDs and non integrated additional function unit . 27
A.6.4 Verification of marking and constructional requirements . 27
Bibliography . 28

Table 1 – List of basic tests to be considered, according to the interface between
RCDs and additional function(s), during the assessment . 18

– 4 – IEC TR 62710:2015 © IEC 2015
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
RESIDUAL CURRENT DEVICES (RCDs) ASSOCIATED
WITH ADDITIONAL FUNCTION(S)
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
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
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
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors
...