IEC 61326-3-2:2017
(Main)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
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 61326-3-2:2017 is also available as IEC 61326-3-2:2017 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.
IEC 61326-3-2:2017 covers all equipment within the scope of IEC 61326-1, 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.
This second edition cancels and replaces the first edition published in 2008. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- extension of the frequency range up to 6 GHz for the radio-frequency electromagnetic field test according to IEC 61000-4-3,
- replacement of the performance criterion FS with DS according to the generic standard IEC 61000-6-7,
- adding Table 1 - Aspects to be considered during application of performance criterion DS,
- including immunity tests for devices with current consumption > 16 A according to IEC 61000-4-34,
- updating Figure A.1 and Figure 1 for better readability,
- adding tests according to IEC 61000-4-16 to replace the tests according to IEC 61000-4-6 in the frequency range between 10 kHz and 150 kHz.
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
IEC 61326-3-2:2017 est disponible sous forme de IEC 61326-3-2:2017 RLV qui contient la Norme internationale et sa version Redline, illustrant les modifications du contenu technique depuis l'édition précédente.
L’IEC 61326-3-2:2017 couvre tous les matériels qui relèvent du domaine d’application de l’IEC 61326-1, mais est limitée aux systèmes et matériels pour applications industrielles dans un environnement électromagnétique spécifié et destinés à réaliser des fonctions de sécurité telles que définies dans l’IEC 61508, avec un niveau d’intégrité de sécurité (SIL) 1-3.
Cette deuxième édition annule et remplace la première édition parue en 2008. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
- extension de la plage de fréquences jusqu’à 6 GHz pour l’essai de champ électromagnétique à fréquence radioélectrique, conformément à l’IEC 61000-4-3,
- remplacement du critère de performance FS par DS, conformément à la norme générique IEC 61000-6-7,
- ajout du Tableau 1 – aspects à prendre en considération lors de l'application du critère de performance DS,
- intégration d’essais d’immunité pour les dispositifs ayant une consommation de courant > 16 A, conformément à l’IEC 61000-4-34,
- mise à jour de la Figure A.1 et de la Figure 1 pour une meilleure lisibilité,
- ajouts d’essais conformes à l’IEC 61000-4-16 afin de remplacer les essais conformes à l’IEC 61000-4-6 dans la plage de fréquences comprises entre 10 kHz et 150 kHz.
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IEC 61326-3-2 ®
Edition 2.0 2017-05
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
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
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.
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3, rue de Varembé Fax: +41 22 919 03 00
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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.
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variety of criteria (reference number, text, technical French extracted from the Terms and Definitions clause of
committee,…). It also gives information on projects, replaced IEC publications issued since 2002. Some entries have been
and withdrawn publications. collected from earlier publications of IEC TC 37, 77, 86 and
CISPR.
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IEC 61326-3-2 ®
Edition 2.0 2017-05
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
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
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 25.040.40; 33.100.20 ISBN 978-2-8322-4367-1
– 2 – IEC 61326-3-2:2017 RLV © IEC 2017
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 8
2 Normative references . 9
3 Terms, definitions and abbreviations . 10
3.1 Terms and definitions . 10
3.2 Abbreviations . 14
4 General . 14
5 EMC test plan . 15
5.1 General . 15
5.2 Instruction for testing . 15
5.3 Configuration of EUT during testing . 15
5.3.1 General . 15
5.3.2 Composition of EUT . 16
5.3.3 Assembly of EUT . 16
5.3.4 I/O ports . 16
5.3.5 Auxiliary equipment (AE) . 16
5.3.6 Cabling and earthing (grounding) . 16
5.4 Operation conditions of EUT during testing . 16
5.4.1 Operation modes . 16
5.4.2 Environmental conditions . 16
5.4.3 EUT software during test . 16
5.5 Specification of performance criteria . 17
5.6 Test description . 17
6 Performance criteria . 17
6.1 General . 17
6.2 Performance criteria A, B and C . 17
6.3 Performance criterion FS DS . 17
6.3.1 Definition of performance criterion DS . 17
6.3.2 Application of the performance criterion FS DS . 18
6.3.3 Aspects to be considered during application of performance criterion DS . 18
7 Immunity requirements . 19
8 Test set-up and test philosophy for EUT with functions intended for safety
applications . 24
8.1 Testing of safety-related systems and equipment intended to be used in
safety-related systems . 24
8.2 Test philosophy for equipment intended for use in safety-related systems . 24
8.3 Test philosophy for safety-related systems . 24
8.4 Test configuration and test performance . 25
8.5 Monitoring . 26
9 Test results and test report . 26
Annex A (informative) Approaches on how to apply IEC 61326-3 series . 32
Annex B (informative) Evaluation of electromagnetic phenomena . 34
Annex C (informative normative) Details of the Specified electromagnetic environment . 36
C.1 General . 36
C.2 Industrial area with limited access . 36
C.3 Limited use of mobile transmitters . 36
C.4 Dedicated cables for power supply and control, signal or communication
lines . 37
C.5 Separation between power supply and control, signal or communication
cables . 37
C.6 Factory building mostly consisting of metal construction . 38
C.7 Overvoltage/lightning protection by appropriate measures . 38
C.8 Pipe heating systems driven by AC mains may be present . 39
C.9 No high-voltage substations close to sensitive areas . 39
C.10 Presence of low-power devices using ISM frequencies according to
CISPR 11 . 39
C.11 Competent staff . 39
C.12 Periodic maintenance of equipment and systems . 39
C.13 Installation guidelines for equipment and systems . 39
Annex D (informative) Example of immunity levels in the process industry . 40
Bibliography . 42
Figure 1 – Typical test set-up for equipment intended for use in safety-related system,
tested as stand-alone equipment or entire system . 27
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 . 29
Figure 3 – Typical test set-up for equipment intended for use in a safety-related system
tested stand-alone .
Figure 4 – Test set-up for a safety-related system .
Figure A.1 – Correlation between the standards IEC 61326-1, IEC 61326-2-x,
IEC 61326-3-1 and IEC 61326-3-2 . 33
Figure C.1 – Recommended cable layouts for different categories . 38
Table 1 – Reaction of EUT during test . 19
Table 2 – Immunity test requirements for equipment intended for use in industrial
locations with specified electromagnetic environment – Enclosure port . 19
Table 3 – Immunity test requirements for equipment intended for use in industrial
locations with specified electromagnetic environment – Input and output AC
power ports . 21
Table 4 – Immunity test requirements for equipment intended for use in industrial
locations with specified electromagnetic environment – Input and output DC
power ports . 22
Table 5 – Immunity test requirements for equipment intended for use in industrial
locations with specified electromagnetic environment – I/O signal/control ports . 22
Table 6 – Immunity test requirements for equipment intended for use in industrial
locations with specified electromagnetic environment – I/O signal/control ports
connected directly to power supply networks . 23
Table 7 – Immunity test requirements for equipment intended for use in industrial
locations with specified electromagnetic environment – Functional earth port . 23
Table B.1 – General considerations for the application of electromagnetic phenomena
for functional safety in industrial applications with specified electromagnetic
environment (examples) . 35
Table D.1 – Immunity test requirements for equipment intended for use in industrial
locations with a specified electromagnetic environment according to NE 21 . 40
– 4 – IEC 61326-3-2:2017 RLV © IEC 2017
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
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
...
IEC 61326-3-2 ®
Edition 2.0 2017-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
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
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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 20 000 terms and definitions in
Technical Specifications, Technical Reports and other English and French, with equivalent terms in 16 additional
documents. Available for PC, Mac OS, Android Tablets and languages. Also known as the International Electrotechnical
iPad. 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 65 000 electrotechnical terminology entries in English and
variety of criteria (reference number, text, technical French extracted from the Terms and Definitions clause of
committee,…). It also gives information on projects, replaced IEC publications issued since 2002. Some entries have been
and withdrawn publications. collected from earlier publications of IEC TC 37, 77, 86 and
CISPR.
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IEC 61326-3-2 ®
Edition 2.0 2017-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
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
INTERNATIONALE
ICS 25.040.40; 33.100.20 ISBN 978-2-8322-4213-1
– 2 – IEC 61326-3-2:2017 © IEC 2017
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 8
2 Normative references . 8
3 Terms, definitions and abbreviations . 10
3.1 Terms and definitions . 10
3.2 Abbreviations . 13
4 General . 13
5 EMC test plan . 13
5.1 General . 13
5.2 Instruction for testing . 14
5.3 Configuration of EUT during testing . 14
5.3.1 General . 14
5.3.2 Composition of EUT . 14
5.3.3 Assembly of EUT . 14
5.3.4 I/O ports . 14
5.3.5 Auxiliary equipment (AE) . 15
5.3.6 Cabling and earthing (grounding) . 15
5.4 Operation conditions of EUT during testing . 15
5.4.1 Operation modes . 15
5.4.2 Environmental conditions . 15
5.4.3 EUT software during test . 15
5.5 Specification of performance criteria . 15
5.6 Test description . 15
6 Performance criteria . 16
6.1 General . 16
6.2 Performance criteria A, B and C . 16
6.3 Performance criterion DS . 16
6.3.1 Definition of performance criterion DS . 16
6.3.2 Application of the performance criterion DS . 16
6.3.3 Aspects to be considered during application of performance criterion DS . 17
7 Immunity requirements . 17
8 Test set-up and test philosophy for EUT with functions intended for safety
applications . 20
8.1 Testing of safety-related systems and equipment intended to be used in
safety-related systems . 20
8.2 Test philosophy for equipment intended for use in safety-related systems . 20
8.3 Test philosophy for safety-related systems . 21
8.4 Test configuration and test performance . 21
8.5 Monitoring . 22
9 Test results and test report . 22
Annex A (informative) Approaches on how to apply IEC 61326-3 series . 25
Annex B (informative) Evaluation of electromagnetic phenomena . 27
Annex C (normative) Specified electromagnetic environment . 29
C.1 General . 29
C.2 Industrial area with limited access . 29
C.3 Limited use of mobile transmitters . 29
C.4 Dedicated cables for power supply and control, signal or communication
lines . 30
C.5 Separation between power supply and control, signal or communication
cables . 30
C.6 Factory building mostly consisting of metal construction . 31
C.7 Overvoltage/lightning protection by appropriate measures . 31
C.8 Pipe heating systems driven by AC mains . 32
C.9 No high-voltage substations close to sensitive areas . 32
C.10 Presence of low-power devices using ISM frequencies according to
CISPR 11 . 32
C.11 Competent staff . 32
C.12 Periodic maintenance of equipment and systems . 32
C.13 Installation guidelines for equipment and systems . 32
Annex D (informative) Example of immunity levels in the process industry . 33
Bibliography .
...
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