IEC 60664-3:2003/AMD1:2010

IEC 60664-3 ®
Edition 2.0 2010-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
BASIC SAFETY PUBLICATION
PUBLICATION FONDAMENTALE DE SÉCURITÉ
AMENDMENT 1
AMENDEMENT 1
Insulation coordination for equipment within low-voltage systems –
Part 3: Use of coating, potting or moulding for protection against pollution

Coordination de l'isolement des matériels dans les systèmes (réseaux) à basse
tension –
Partie 3: Utilisation de revêtement, d'empotage ou de moulage pour la protection
contre la pollution
IEC 60664-3:2003/A1:2010
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 la CEI ou du Comité national de la CEI du pays du demandeur.
Si vous avez des questions sur le copyright de la CEI ou si vous désirez obtenir des droits supplémentaires sur cette
publication, utilisez les coordonnées ci-après ou contactez le Comité national de la CEI de votre pays de résidence.

IEC Central Office
3, rue de Varembé
CH-1211 Geneva 20
Switzerland
Email: inmail@iec.ch
Web: 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.
ƒ Catalogue of IEC publications: www.iec.ch/searchpub
The IEC on-line Catalogue enables you to search by a variety of criteria (reference number, text, technical committee,…).
It also gives information on projects, withdrawn and replaced publications.
ƒ IEC Just Published: www.iec.ch/online_news/justpub
Stay up to date on all new IEC publications. Just Published details twice a month all new publications released. Available
on-line and also by email.
ƒ Electropedia: www.electropedia.org
The world's leading online dictionary of electronic and electrical terms containing more than 20 000 terms and definitions
in English and French, with equivalent terms in additional languages. Also known as the International Electrotechnical
Vocabulary online.
ƒ Customer Service Centre: www.iec.ch/webstore/custserv
If you wish to give us your feedback on this publication or need further assistance, please visit the Customer Service
Centre FAQ or contact us:
Email: csc@iec.ch
Tel.: +41 22 919 02 11
Fax: +41 22 919 03 00
A propos de la CEI
La Commission Electrotechnique Internationale (CEI) 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 CEI
Le contenu technique des publications de la CEI est constamment revu. Veuillez vous assurer que vous possédez
l’édition la plus récente, un corrigendum ou amendement peut avoir été publié.
ƒ Catalogue des publications de la CEI: www.iec.ch/searchpub/cur_fut-f.htm
Le Catalogue en-ligne de la CEI vous permet d’effectuer des recherches en utilisant différents critères (numéro de référence,
texte, comité d’études,…). Il donne aussi des informations sur les projets et les publications retirées ou remplacées.
ƒ Just Published CEI: www.iec.ch/online_news/justpub
Restez informé sur les nouvelles publications de la CEI. Just Published détaille deux fois par mois les nouvelles
publications parues. Disponible en-ligne et aussi par email.
ƒ Electropedia: www.electropedia.org
Le premier dictionnaire en ligne au monde de termes électroniques et électriques. Il contient plus de 20 000 termes et
définitions en anglais et en français, ainsi que les termes équivalents dans les langues additionnelles. Egalement appelé
Vocabulaire Electrotechnique International en ligne.
ƒ Service Clients: www.iec.ch/webstore/custserv/custserv_entry-f.htm
Si vous désirez nous donner des commentaires sur cette publication ou si vous avez des questions, visitez le FAQ du
Service clients ou contactez-nous:
Email: csc@iec.ch
Tél.: +41 22 919 02 11
Fax: +41 22 919 03 00
IEC 60664-3 ®
Edition 2.0 2010-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
BASIC SAFETY PUBLICATION
PUBLICATION FONDAMENTALE DE SÉCURITÉ
AMENDMENT 1
AMENDEMENT 1
Insulation coordination for equipment within low-voltage systems –
Part 3: Use of coating, potting or moulding for protection against pollution

Coordination de l'isolement des matériels dans les systèmes (réseaux) à basse
tension –
Partie 3: Utilisation de revêtement, d'empotage ou de moulage pour la
protection contre la pollution

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
F
CODE PRIX
ICS 29.080.30 ISBN 978-2-88910-940-1
– 2 – 60664-3 Amend.1 Ó IEC:2010
FOREWORD
This amendment has been prepared by IEC technical committee 109: Insulation coordination
for low-voltage equipment.
The text of this amendment is based on the following documents:
FDIS Report on voting
109/79/FDIS 109/81/RVD
Full information on the voting for the approval of this amendment can be found in the report
on voting indicated in the above table.
The committee has decided that the contents of this amendment and the base publication will
remain unchanged until the stability date indicated on the IEC web site under
"http://webstore.iec.ch" in the data related to the specific publication. At this date, the
publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
The contents of the corrigendum of November 2010 have been included in this copy.
_____________
2 Normative references
Replace the existing text by the following:
IEC 60068-2-1:2007, Environmental testing – Part 2-1: Tests – Test A: Cold
IEC 60068-2-2:2007, Environmental testing – Part 2-2: Tests – Test B: Dry heat
IEC 60068-2-14:2009, Environmental testing – Part 2-14: Tests – Test N: Change of
temperature
IEC 60068-2-78:2001, Environmental testing – Part 2-78: Tests – Test Cab: Damp heat,
steady state
IEC 60326-2:1990, Printed boards – Part 2: Test methods
Amendment 1 (1992)
IEC 60454-3-1:1998, Pressure-sensitive adhesive tapes for electrical purposes –
Part 3: Specifications for individual materials – Sheet 1: PVC film tapes with pressure-
sensitive adhesive
Amendment 1 (2001)
IEC 60664-1:2007, Insulation coordination for equipment within low-voltage systems –
Part 1: Principles, requirements and tests

60664-3 Amend.1 Ó IEC:2010 – 3 –
IEC 60664-5:2007, Insulation coordination for equipment within low-voltage systems –
Part 5: Comprehensive method for determining clearances and creepage distances equal to
or less than 2 mm
IEC 61189-2:2006, Test methods for electrical materials, printed boards and other
interconnection structures and assemblies – Part 2:Test methods for materials for
interconnection structures
IEC 61189-3:2007, Test methods for electrical materials, printed boards and other
interconnection structures and assemblies – Part 3: Test methods for interconnection
structures (printed boards)
IEC 61249-2 (all Parts 2) Materials for printed boards and other interconnecting structures –
Reinforced base materials, clad and unclad
IEC Guide 104:2004, The preparation of safety publications and the use of basic safety
publications and group safety publications
4.2 Application range regarding environment
Replace, in the second paragraph, "3.3.2.3 …" by "5.3.2.4 …"
4.4 Dimensioning procedures
Replace in the first paragraph, "3.1 and 3.2 ." by "5.1 and 5.2 …"
At the end of the second paragraph add the following sentence:
These values may also be applied to functional insulation.
5.1 General
Add the following note after the first paragraph:
NOTE The suitability of protection is evaluated after the scratch resistance test described in 5.5, the visual
examination described in 5.6 and the subsequent conditioning described in 5.7.
5.5 Scratch resistance test
Replace the first paragraph by the following:
NOTE In some cases, scratch resistance test cannot be applied to assemblies protected against pollution by the
use of potting or moulding. In such cases, considerations for any alternatively or additional tests may be necessary
Scratches shall be made across five pairs of conducting parts and the intervening separations
at points where the insulation will be subject to the maximum electric field strength between
conductors.
5.6 Visual examination
Replace the first paragraph by the following:
The specimens shall be visually examined according to test 3V02 in 6.2 of IEC 61189-3:2007.

– 4 – 60664-3 Amend.1 Ó IEC:2010
5.7.2 Dry heat
Replace the footnote in Table 2 by the following:
a)
For defined flammability, refer to 8.6 of IEC 61189-2:2006 and the relevant part 2 of IEC 61249.
5.8.3 Insulation resistance between conductors
Replace the first paragraph by the following:
The test shall be carried out according to 10.3 of IEC 61189-3:2007, the voltage specified for
test method 3E03 being as close to the working voltage as possible.
5.8.4 AC withstand voltage test
Replace, in the first line “4.1.2.3 …” by “6.1.3.4 …”.
Replace in the second line “3.3.3.2.2 … ” by “5.3.3.2.3 . ”.
Replace in the third line “Table 1 .” by “Table F.1 .".
5.8.5 Partial discharge extinction voltage
Replace, in the first paragraph, in both the second and fourth line “4.1.2.4 .” by “6.1.3.5 .”.
5.9.1 Resistance to soldering heat
Replace the first paragraph by the following:
The test shall be carried out according to test 3N02 of 11.2 of IEC 61189-3:2007.
5.9.2 Flammability
Replace the first sentence of the first paragraph by the following:
The test shall be carried out accord
...