SIST EN IEC 61326-3-2:2019

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)

This part of IEC 61326 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.
The electromagnetic environments encompassed by this product family standard are
industrial, both indoor and outdoor, and based on the requirements of the process industry,
specifically chemical/petrochemical/pharmaceutical manufacturing plants using the mitigation
measures given in Annex C. The difference between the electromagnetic environment
covered by this document 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 with test values that have been proven in practice.
The environment of industrial application with a specified electromagnetic environment
typically includes the following characteristics:
– industrial area with limited access;
– limited use of mobile transmitters;
– dedicated cables for power supply and control, signal or communication lines;
– separation between power supply and control, signal or communication cables;
– factory building mostly consisting of metal construction;
– overvoltage/lightning protection by appropriate measures (for example, metal construction
of the building or use of protection devices);
– pipe heating systems driven by AC main power;
– no high-voltage substation close to sensitive areas;
– presence of CISPR 11 Group 2 ISM equipment using ISM frequencies only with low power;
– competent staff;
– periodical maintenance of equipment and systems;
– mounting and installation guidelines for equipment and systems.
Equipment and systems considered as “proven-in-use” according to IEC 61508 or “prior use”
according to IEC 61511 are excluded from the scope of this document.
Fire alarm systems and security alarm systems intended for protection of buildings are
excluded from the scope of this document.

Elektrische Mess-, Steuer-, Regel- und Laborgeräte – EMV-Anforderungen – Teil 3-2: Störfestigkeitsanforderungen für sicherheitsbezogene Systeme und für Geräte, die für sicherheitsbezogene Funktionen vorgesehen sind (Funktionale Sicherheit) – Industrielle Anwendungen in spezifizierter elektromagnetischer Umgebung (IEC 61326-3-2:2017)

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)

NEW!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.

Električna oprema za merjenje, nadzor in laboratorijsko uporabo - Zahteve za elektromagnetno združljivost (EMC) - 3-2. del: Zahteve za odpornost varnostnih sistemov in za opremo, namenjeno za izvajanje z varnostjo povezanih funkcij (funkcijska varnost) - Industrijska uporaba v določenih elektromagnetnih okoljih (IEC 61326-3-2:2017)

Ta del standarda IEC 61326 zajema vso opremo, ki sodi v področje uporabe standarda IEC 61326-1, vendar se omejuje na sisteme in opremo za industrijsko uporabo znotraj določenega elektromagnetnega okolja, ki so namenjeni izvajanju varnostnih funkcij, kot je opredeljeno v standardu IEC 61508 pri ravni celovite varnosti 1–3.
Elektromagnetna okolja, ki jih zajema ta standard družine izdelkov, so industrijska, tako v zaprtih prostorih kot na prostem, in temeljijo na zahtevah procesne industrije, zlasti proizvodnih obratov za kemikalije/petrokemijo/farmacijo, ki uporabljajo ukrepe za ublažitev, podane v dodatku C. Razlika med elektromagnetnim okoljem, ki ga zajema ta dokument, in splošnim industrijskim okoljem (glej IEC 61326-3-1) nastane zaradi ukrepov za ublažitev, ki se uporabljajo za elektromagnetne pojave, ki povzročajo določeno elektromagnetno okolje s preskusnimi vrednostmi, ki so bile dokazane v praksi.
Okolje industrijske uporabe z določenim elektromagnetnim okoljem običajno vključuje naslednje značilnosti:
– industrijsko območje z omejenim dostopom;
– omejena uporaba mobilnih oddajnikov;
– namenski kabli za napajanje in nadzor, signalne ali komunikacijske linije;
– ločevanje med napajanjem in nadzorom, signalni ali komunikacijski kabli;
– zgradba tovarne, ki je večinoma sestavljena iz kovinske konstrukcije;
– zaščita pred prenapetostjo/udari strel z ustreznimi ukrepi (na primer kovinska konstrukcija zgradbe ali uporaba zaščitnih naprav);
– cevni sistemi za ogrevanje, ki se napajajo iz električnega omrežja z izmeničnim tokom;
– brez visokonapetostnih podpostaj v bližini občutljivih območij;
– prisotnost opreme CISPR 11 Group 2 ISM, ki uporablja frekvence ISM izključno z nizko stopnjo moči;
– usposobljeno osebje;
– redno vzdrževanje opreme in sistemov;
– smernice za montažo ter namestitev opreme in sistemov.
Oprema in sistemi, ki so obravnavani kot »dokazani z uporabo« v skladu s standardom IEC 61508 ali kot »pred uporabo« v skladu s standardom IEC 61511, ne spadajo na področje uporabe tega dokumenta.
Sistemi za javljanje požara in varnostni alarmni sistemi, namenjeni za zaščito stavb, ne spadajo na področje uporabe tega dokumenta.

General Information

• Status: Published
• Publication Date: 11-Mar-2019
• ICS: 25.040.40 - Industrial process measurement and control
• ICS: 33.100.20 - Immunity
• Technical Committee: MOV - Measuring equipment for electromagnetic quantities
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 11-Dec-2018
• Due Date: 15-Feb-2019
• Completion Date: 12-Mar-2019
• Directive: 2004/108/EU - DIRECTIVE 2004/108/EC OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 15 December 2004 on the approximation of the laws of the Member States relating to electromagnetic compatibility and repealing Directive 89/336/EEC
• Ref Project: EN IEC 61326-3-2:2018 - 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

Relations

• Replaces: SIST EN 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
• Effective Date: 04-Dec-2018

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN IEC 61326-3-2:2019
01-april-2019
1DGRPHãþD
SIST EN 61326-3-2:2008
(OHNWULþQDRSUHPD]DPHUMHQMHQDG]RULQODERUDWRULMVNRXSRUDER=DKWHYH]D
HOHNWURPDJQHWQR]GUXåOMLYRVW(0&GHO=DKWHYH]DRGSRUQRVWYDUQRVWQLK
VLVWHPRYLQ]DRSUHPRQDPHQMHQR]DL]YDMDQMH]YDUQRVWMRSRYH]DQLKIXQNFLM
IXQNFLMVNDYDUQRVW,QGXVWULMVNDXSRUDEDYGRORþHQLKHOHNWURPDJQHWQLKRNROMLK
,(&
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)
Elektrische Mess-, Steuer-, Regel- und Laborgeräte – EMV-Anforderungen – Teil 3-2:
Störfestigkeitsanforderungen für sicherheitsbezogene Systeme und für Geräte, die für
sicherheitsbezogene Funktionen vorgesehen sind (Funktionale Sicherheit) – Industrielle
Anwendungen in spezifizierter elektromagnetischer Umgebung (IEC 61326-3-2:2017)
Ta slovenski standard je istoveten z: EN IEC 61326-3-2:2018
ICS:
25.040.40 Merjenje in krmiljenje Industrial process
industrijskih postopkov measurement and control
33.100.20 Imunost Immunity
SIST EN IEC 61326-3-2:2019 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN IEC 61326-3-2:2019

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SIST EN IEC 61326-3-2:2019


EUROPEAN STANDARD EN IEC 61326-3-2

NORME EUROPÉENNE

EUROPÄISCHE NORM
November 2018
ICS 25.040.40; 33.100.20 Supersedes EN 61326-3-2:2008
English Version
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)
Matériel électrique de mesure, de commande et de Elektrische Mess-, Steuer-, Regel- und Laborgeräte - EMV-
laboratoire - Exigences relatives à la CEM - Partie 3-2: Anforderungen - Teil 3-2: Störfestigkeitsanforderungen für
Exigences d'immunité pour les systèmes relatifs à la sicherheitsbezogene Systeme und für Geräte, die für
sécurité et pour les matériels destinés à réaliser des sicherheitsbezogene Funktionen vorgesehen sind
fonctions relatives à la sécurité (sécurité fonctionnelle) - (Funktionale Sicherheit) - Industrielle Anwendungen in
Applications industrielles dont l'environnement spezifizierter elektromagnetischer Umgebung
électromagnétique est spécifié (IEC 61326-3-2:2017)
(IEC 61326-3-2:2017)
This European Standard was approved by CENELEC on 2018-08-22. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden,
Switzerland, Turkey and the United Kingdom.


European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2018 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
 Ref. No. EN IEC 61326-3-2:2018 E

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SIST EN IEC 61326-3-2:2019
EN IEC 61326-3-2:2018 (E)
European foreword
The text of document 65A/820/FDIS, future edition 2 of IEC 61326-3-2, prepared by SC 65A "System
aspects" of IEC/TC 65 "Industrial-process measurement, control and automation" was submitted to the
IEC-CENELEC parallel vote and approved by CENELEC as EN IEC 61326-3-2:2018.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2019-05-30
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2021-11-30
document have to be withdrawn

This document supersedes EN 61326-3-2:2008.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
This document has been prepared under a mandate given to CENELEC by the European Commission
and the European Free Trade Association, and supports essential requirements of EU Directive(s).
Endorsement notice
The text of the International Standard IEC 61326-3-2:2017 was approved by CENELEC as a
European Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards
indicated:
IEC 61000 (series) NOTE Harmonized as EN 61000 (series)
IEC 61000-1-2:2016 NOTE Harmonized as EN 61000-1-2:2016 (not modified)
IEC 61000-6-7 NOTE Harmonized as EN 61000-6-7
IEC 61508 (series) NOTE Harmonized as EN 61508 (series)
IEC 61508-1:2010 NOTE Harmonized as EN 61508-1:2010 (not modified)
IEC 61508-4:2010 NOTE Harmonized as EN 61508-4:2010 (not modified)
IEC 61784-3 NOTE Harmonized as EN 61784-3
CISPR 11:2015 NOTE Harmonized as EN 55011:2016

2

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SIST EN IEC 61326-3-2:2019
EN IEC 61326-3-2:2018 (E)
Annex ZA
(normative)

Normative references to international publications
with their corresponding European publications
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments)
applies.
NOTE 1  Where an International Publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
NOTE 2  Up-to-date information on the latest versions of the European Standards listed in this annex is available here:
www.cenelec.eu.

Publication Year Title EN/HD Year
IEC 60050-161 -  International Electrotechnical Vocabulary. Chapter - -
161: Electromagnetic compatibility
IEC 61000-4-2 2008 Electromagnetic compatibility (EMC) - Part 4-2: EN 61000-4-2 2009
Testing and measurement techniques - Electrostatic
discharge immunity test
IEC 61000-4-3 2006 Electromagnetic compatibility (EMC) - Part 4-3 : EN 61000-4-3 2006
Testing and measurement techniques - Radiated,
radio-frequency, electromagnetic field immunity test
+ A1 2007  + A1 2008
+ A2 2010  + A2 2010
IEC 61000-4-4 2012 Electromagnetic compatibility (EMC) - Part 4-4: EN 61000-4-4 2012
Testing and measurement techniques - Electrical
fast transient/burst immunity test
IEC 61000-4-5 2014 Electromagnetic compatibility (EMC) - Part 4-5: EN 61000-4-5 2014
Testing and measurement techniques - Surge
immunity test
IEC 61000-4-6 2013 Electromagnetic compatibility (EMC) - Part 4-6: EN 61000-4-6 2014
Testing and measurement techniques - Immunity to
conducted disturbances, induced by radio-
frequency fields
IEC 61000-4-8 2009 Electromagnetic compatibility (EMC) - Part 4-8: EN 61000-4-8 2010
Testing and measurement techniques - Power
frequency magnetic field immunity test
IEC 61000-4-11 2004 Electromagnetic compatibility (EMC) - Part 4-11: EN 61000-4-11 2004
Testing and measurement techniques - Voltage
dips, short interruptions and voltage variations
immunity tests
3

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SIST EN IEC 61326-3-2:2019
EN IEC 61326-3-2:2018 (E)
IEC 61000-4-16 2015 Electromagnetic compatibility (EMC) - Part 4-16: EN 61000-4-16 2016
Testing and measurement techniques - Test for
immunity to conducted, common mode
disturbances in the frequency range 0 Hz to 150
kHz
IEC 61000-4-29 2000 Electromagnetic compatibility (EMC) - Part 4-29: EN 61000-4-29 2000
Testing and measurement techniques - Voltage
dips, short interruptions and voltage variations on
d.c. input power port immunity tests
IEC 61000-4-34 2005 Electromagnetic compatibility (EMC) - Part 4-34: EN 61000-4-34 2007
Testing and measurement techniques - Voltage
dips, short interruptions and voltage variations
immunity tests for equipment with input current
more than 16 A per phase
+ A1 2009  + A1 2009
IEC 61326-1 2012 Electrical equipment for measurement, control and EN 61326-1 2013
laboratory use - EMC requirements - Part 1:
General requirements
IEC 61326-3-1 2017 Electrical equipment for measurement, control and EN 61326-3-1 2017
laboratory use - EMC requirements - Part 3-1:
Immunity requirements for safety-related systems
and for equipment intended to perform safety-
related functions (functional safety) -General
industrial applications
IEC 61508-2 2010 Functional safety of EN 61508-2 2010
electrical/electronic/programmable electronic safety-
related systems - Part 2: Requirements for
electrical/electronic/programmable electronic safety-
related systems


4

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SIST EN IEC 61326-3-2:2019




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



Warning! Make sure that you obtained this publication from an authorized distributor.

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® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale

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SIST EN IEC 61326-3-2:2019
– 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

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SIST EN IEC 61326-3-2:2019
IEC 61326-3-2:2017 © IEC 2017 – 3 –
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 . 36

Figure 1 – Typical test set-up for equipment intended for use in safety-related system,
tested as stand-alone equipment or entire system . 23
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 . 24
Figure A.1 – Correlation between the standards IEC 61326-1, IEC 61326-2-x,
IEC 61326-3-1 and IEC 61326-3-2 . 26
Figure C.1 – Recommended cable layouts for different categories . 31

Table 1 – Reaction of EUT during test . 17
Table 2 – Immunity test requirements – Enclosure port . 18
Table 3 – Immunity test requirements – Input and output AC power ports . 18
Table 4 – Immunity test requirements – Input and output DC power ports . 19
Table 5 – Immunity test requirements – I/O signal/control ports . 19
Table 6 – Immunity test requirements – I/O signal/control ports connected directly to
power supply networks. 19
Table 7 – Immunity test requirements – Functional earth port . 20
Table B.1 – General considerations for the application of electromagnetic phenomena
for functional safety in industrial applications with specified electromagnetic
environment (examples) . 28
Table D.1 – Immunity test requirements for equipment intended for use in industrial
locations with a specified electromagnetic environment according to NE 21 . 34

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SIST EN IEC 61326-3-2:2019
– 4 – IEC 61326-3-2:2017 © 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 specified electromagnetic environment

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
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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
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3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 61326-3-2 has been prepared by subcommittee 65A: System
aspects, of IEC technical committee 65: Industrial-process measurement, control and
automation.
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,

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SIST EN IEC 61326-3-2:2019
IEC 61326-3-2:2017 © IEC 2017 – 5 –
• 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.
IEC 61326-3-2 is to be read in conjunction with IEC 61326-1.
The text of this standard is based on the following documents:
FDIS Report on voting
65A/820/FDIS 65A/826/RVD

Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all the parts of the IEC 61326 series, under the general title Electrical equipment for
measurement, control and laboratory use – EMC requirements, can be found on the IEC
website.
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC website 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.

IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct
understanding of its contents. Users should therefore print this document using a
colour printer.

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SIST EN IEC 61326-3-2:2019
– 6 – IEC 61326-3-2:2017 © IEC 2017
INTRODUCTION
Functional safety is that part of the overall safety relating to the equipment under control
(EUC) and the EUC control system which depends on the correct functioning of the electrical
safety-related systems. To achieve this, all items of equipment of the safety-related system
which are involved in the performance of the safety functions must behave in a specified
manner under all relevant conditions.
The IEC basic safety publication for functional safety of electrical/electronic/programmable
electronic safety-related systems is IEC 61508. It sets the overall requirements to achieve
functional safety. Sufficient immunity to electromagnetic disturbances is one of those
requirements.
The concept of IEC 61508 distinguishes between the consideration of the application and the
design of safety-related electrical and electronic systems. The overall safety requirements
specification specifies all relevant requirements of the intended application, as follows.
a) definition of the safety functions, based on a risk assessment of the intended application
(which functions are intended to reduce risk);
b) appropriate safety integrity level (SIL) for each safety function based on a risk assessment
of the intended application;
c) definition of the environment in which the system is intended to work including the
electromagnetic environment as required by IEC 61508-2.
The requirements for each safety function are then specified in one or more system safety
requirements specifications (SSRS). Hence, with regard to immunity against electromagnetic
phenomena, the essential starting point is that the electromagnetic environment and its
phenomena are considered in the SSRS, as required by IEC 61508. The safety-related
system intended to implement the specified safety function has to fulfil the SSRS, and, from it,
corresponding immunity requirements have to be derived for the items of equipment, which
results in an equipment requirement specification. With respect to the electromagnetic
environment, the SSRS and the equipment requirement specification should be based on a
competent assessment of the foreseeable electromagnetic threats in the real environment
over the whole operational life of the equipment. Hence, immunity requirements for the
equipment depend on the characteristics of the electromagnetic environment in which the
equipment is intended to be used.
The equipment manufacturer, therefore, has to prove that the equipment fulfils the equipment
requirement specification and the system integrator must prove that the system fulfils the
SSRS. Evidence has to be produced by application of appropriate metho
...