IEC 61326-3-2:2008

Electrical equipment for measurement, control and laboratory use - EMC requirements - Part 3-2: Immunity requirements for safety-related systems and for equipment intended to perform safety-related functions (functional safety) - Industrial applications with specified electromagnetic environment

IEC 61326-1 applies to this part of IEC 61326 but is limited to systems and equipment for industrial applications within a specified electromagnetic environment and intended to perform safety functions as defined in IEC 61508 with SIL 1-3. The electromagnetic environments encompassed by this product family standard are industrial, both indoor and outdoor, as they can be found in industrial applications with an electromagnetic environment having specified characteristics (for example, process industry). The difference between the electromagnetic environment covered by this standard compared to the general industrial environment (see IEC 61326-3-1) is due to the mitigation measures employed against electromagnetic phenomena leading to a specified electromagnetic environment. The contents of Interpretation Sheet 1 of June 2013 have been included in this copy.

Matériel électrique de mesure, de commande et de laboratoire - Exigences relatives à la CEM - Partie 3-2: Exigences d'immunité pour les systèmes relatifs à la sécurité et pour les matériels destinés à réaliser des fonctions relatives à la sécurité (sécurité fonctionnelle) - Applications industrielles dont l'environnement électromagnétique est spécifié

La CEI 61326-1 est applicable à la présente norme CEI 61326-3-2, mais elle est limitée aux systèmes et matériels pour applications industrielles destinés à réaliser des fonctions de sécurité telles que définies dans la CEI 61508, avec un SIL 1-3. L'environnement considéré par la présente norme est industriel, en bâtiment ou en extérieur, et il peut être rencontré dans des applications industrielles dont l'environnement électromagnétique possède des caractéristiques spécifiées (par exemple l'industrie de procédés). Par rapport à l'environnement industriel général (voir la CEI 61326-3-1), la différence de l'environnement électromagnétique couvert par la présente norme résulte des mesures d'atténuation employées contre les phénomènes EM conduisant à un environnement électromagnétique spécifié. Le contenu de la Feuille d'interprétation 1 de juin 2013 a été pris en considération dans cet exemplaire.

General Information

• Status: Published
• Publication Date: 29-Jan-2008
• ICS: 25.040.40 - Industrial process measurement and control
• ICS: 33.100.20 - Immunity
• Technical Committee: SC 65A - System aspects
• Drafting Committee: WG 4 - TC 65/SC 65A/WG 4
• Current Stage: DELPUB - Deleted Publication
• Completion Date: 16-May-2017

Relations

• Replaces: IEC 61326:2002 - Electrical equipment for measurement, control and laboratory use - EMC requirements
• Effective Date: 05-Sep-2023
• Replaces: IEC 61326:2002/COR1:2002 - Corrigendum 1 - Electrical equipment for measurement, control and laboratory use - EMC requirements
• Effective Date: 05-Sep-2023
• Revised: IEC 61326-3-2:2017 - Electrical equipment for measurement, control and laboratory use - EMC requirements - Part 3-2: Immunity requirements for safety-related systems and for equipment intended to perform safety-related functions (functional safety) - Industrial applications with specified electromagnetic environment
• Effective Date: 05-Sep-2023
• Revised: IEC 61326-3-2:2008/ISH1:2013 - Interpretation sheet 1 - Electrical equipment for measurement, control and laboratory use - EMC requirements - Part 3-2: Immunity requirements for safety-related systems and for equipment intended to perform safety-related functions (functional safety) - Industrial applications with specified electromagnetic environment
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 61326-3-2
Edition 1.0 2008-01
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Electrical equipment for measurement, control and laboratory use – EMC
requirements –
Part 3-2: Immunity requirements for safety-related systems and for equipment
intended to perform safety-related functions (functional safety) – Industrial
applications with specified electromagnetic environment

Matériel électrique de mesure, de commande et de laboratoire – Exigences
relatives à la CEM –
Partie 3-2: Exigences d'immunité pour les systèmes relatifs à la sécurité et pour
les matériels destinés à réaliser des fonctions relatives à la sécurité (sécurité
fonctionnelle) – Applications industrielles dont l’environnement
électromagnétique est spécifié
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: [e-mail]
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: [e-mail]
Tel.: [phone]
Fax: [phone]
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: [e-mail]
Tél.: [phone]
Fax: [phone]
IEC 61326-3-2
Edition 1.0 2008-01
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Electrical equipment for measurement, control and laboratory use – EMC
requirements –
Part 3-2: Immunity requirements for safety-related systems and for equipment
intended to perform safety-related functions (functional safety) – Industrial
applications with specified electromagnetic environment

Matériel électrique de mesure, de commande et de laboratoire – Exigences
relatives à la CEM –
Partie 3-2: Exigences d'immunité pour les systèmes relatifs à la sécurité et pour
les matériels destinés à réaliser des fonctions relatives à la sécurité (sécurité
fonctionnelle) – Applications industrielles dont l’environnement
électromagnétique est spécifié
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
V
CODE PRIX
ICS 25.040.40; 33.100.20 ISBN 2-8318-9510-3

SC 65A/Publication 61326-3-2 (2008), First edition/I-SH 01
ELECTRICAL EQUIPMENT FOR MEASUREMENT,
CONTROL AND LABORATORY USE –
EMC REQUIREMENTS –
Part 3-2: Immunity requirements for safety-related
systems and for equipment intended to perform
safety-related functions (functional safety) –
Industrial applications with specified
electromagnetic environment
INTERPRETATION SHEET 1
This interpretation sheet has been prepared by subcommittee 65A: System aspects, of IEC
technical committee 65.
The text of this interpretation sheet is based on the following documents:
ISH Report on voting
65A/632/ISH 65A/644/RVD
Full information on the voting for the approval of this interpretation sheet can be found in the
report on voting indicated in the above table.
___________
Introduction
equipment intended to perform safety-related functions (functional safety) in industrial
applications with specified electromagnetic environment. The actual immunity levels, test
parameters and applicable basic standards are listed in Table 1a to Table 1f of that standard.
In case of the phenomenon “Conducted r.f.” the basic standard IEC 61000-4-6:2004 shall be
applied. The frequency range under consideration in IEC 61326-3-2:2008 is from 10 kHz to 80
MHz though the basic standard IEC 61000-4-6:2004 lists calibration parameters for the
frequency range from 150 kHz to 80 MHz only. This lack in having some information
concerning the calibration was the reason for having introduced footnote c in Table 1b (and
for the identical footnotes regarding this phenomenon in the other tables).
However, footnote c in Table 1b leaves some space for interpretation as it is not entirely clear
whether it applies to the entire calibration situation for all types of injection methods or to that
one of CDNs only, as in the first case some information would be missing for the situation of
testing via clamp injection.
Interpretation:
Footnote c in Table 1b shall be interpreted as follows:
The basic standard IEC 61000-4-6:2004 allows different injection methods, and their selection
shall be done according to the rules for selecting injection methods and test points (see 7.1 of
IEC 61000-4-6:2004).
June 2013 ICS 25.040.40; 33.100.20

In case the CDN injection method is applied the impedance of the CDN in the frequency range
10 kHz up to 150 kHz has to comply with the asymmetric impedance requirements of
IEC 61000-4-6:2004 at 150 kHz. Calibration shall be performed in accordance with
IEC 61000-4-6:2004. Sufficient decoupling can be demonstrated if the impedance criterion is
met both with the AE port short-circuited and then open-circuited.
In case the clamp injection is applied the procedures of 7.3 or 7.4 of the basic standard
IEC 61000-4-6:2004 are applicable in the frequency range from 10 kHz to 150 kHz as well.

_____________
June 2013 ICS 25.040.40; 33.100.20

– 2 – 61326-3-2 © IEC:2008
CONTENTS
FOREWORD.4
INTRODUCTION.6

1 Scope.9
2 Normative references .10
3 Terms and definitions .11
4 General .13
5 EMC test plan.14
5.1 General .14
5.2 Configuration of EUT during testing.14
5.2.1 General .14
5.2.2 Composition of EUT.14
5.2.3 Assembly of EUT.14
5.2.4 I/O ports .15
5.2.5 Auxiliary equipment .15
5.2.6 Cabling and earthing (grounding).15
5.3 Operation conditions of EUT during testing.15
5.3.1 Operation modes .15
5.3.2 Environmental conditions.15
5.3.3 EUT software during test .15
5.4 Specification of performance criteria .15
5.5 Test description.15
6 Performance criteria .16
6.1 Performance criteria A, B and C .16
6.2 Performance criterion FS.16
6.3 Application of the performance criterion FS .16
7 Immunity requirements .16
8 Test set-up and test philosophy for EUT with functions intended for safety
applications .19
8.1 Testing of safety-related systems and equipment intended to be used in
safety-related systems .19
8.2 Test philosophy for equipment intended for use in safety-related systems.20
8.3 Test philosophy for safety-related systems .20
8.4 Test configuration.20
8.5 Monitoring .21
9 Test results and test report.21

Annex A (informative) Evaluation of electromagnetic phenomena .25
Annex B (informative) Details of the specified electromagnetic environment .27
Annex C (informative) Example of immunity levels in the process industry.31

Bibliography.32

Figure 1 – Correlation between the standards IEC 61326-1, IEC 61326-2-X,
IEC 61326-3-1 and IEC 61326-3-2 .8

61326-3-2 © IEC:2008 – 3 –
Figure 2 – Typical test set-up for equipment intended for use in a safety related system
integrated into a representative safety-related system during test .22
Figure 3 – Typical test set-up for equipment intended for use in a safety-related system
tested stand-alone .23
Figure 4 – Test set-up for a safety-related system .24
Figure B.1 – Recommended cable layouts for different categories .28

Tabl
...