Electrical equipment for measurement, control and laboratory use - EMC requirements - Part 1: General requirements (IEC 61326-1:2020)

This part of IEC 61326 specifies requirements for immunity and emissions regarding electromagnetic
compatibility (EMC) for electrical equipment, operating from a supply or battery of
less than 1 000 V AC or 1 500 V DC or from the circuit being measured. Equipment intended
for professional, industrial-process, industrial-manufacturing and educational use is covered
by this part. It includes equipment and computing devices for
– measurement and test;
– control;
– LABORATORY use;
– accessories intended for use with the above (such as sample handling equipment),
intended to be used in industrial and non-industrial locations.
Computing devices and assemblies and similar equipment within the scope of information
technology equipment (ITE) and complying with applicable ITE EMC standards can be used in
systems within the scope of this part of IEC 61326 without additional testing, if they are
suitable for the intended electromagnetic environment.
It is generally considered that this product family standard takes precedence over the
corresponding generic EMC standards.
The following equipment is covered by this document.
a) Electrical measurement and test equipment
This is equipment which, by electrical means, measures, indicates or records one or more
electrical or non-electrical quantities, also non-measuring equipment such as signal
generators, measurement standards, power supplies and transducers.
b) Electrical control equipment
This is equipment which controls one or more output quantities to specific values, with
each value determined by manual settings, by local or remote programming, or by one or
more input variables. This includes industrial process measurement and control (IPMC)
equipment, which consists of devices such as:
– process controllers and regulators;
– programmable controllers;
– power supply units for equipment and systems (centralized or dedicated);
– analogue/digital indicators and recorders;
– process instrumentation;
– transducers, positioners, intelligent actuators, etc.
c) Electrical LABORATORY equipment, including In Vitro Diagnostic (IVD) medical equipment
This is equipment used to prepare or analyse materials, or measure, indicate or monitor
physical quantities. This equipment might also be used in areas other than laboratories.
d) Equipment a), b) or c) as above when being equipped with components having radio
functionality, for example for wireless communication.
Equipment within the scope of this document might be operated in different electromagnetic
environments; depending on the electromagnetic environment different emission and immunity
test requirements are applicable.
This document considers three types of electromagnetic environments:
• BASIC ELECTROMAGNETIC ENVIRONMENT;
• INDUSTRIAL ELECTROMAGNETIC ENVIRONMENT;
• CONTROLLED ELECTROMAGNETIC ENVIRONMENT.
Corresponding immunity test requirements are described in Clause 6.
In terms of emission requirements, equipment shall be classified in Class A or Class B
equipment, as per the requirements and procedure of CISPR 11. The corresponding emission
requirements are described in Clause 7.
The specified emission and immunity requirements aim at achieving electromagnetic
compatibility between equipment covered in this document and other equipment that might
operate at locations with electromagnetic environments considered in this document.
Guidance for an assessment concerning the risk for achieving EMC is given in Annex B.

Elektrische Mess-, Steuer-, Regel- und Laborgeräte - EMV-Anforderungen - Teil 1: Allgemeine Anforderungen (IEC 61326-1:2020)

Matériel électrique de mesure, de commande et de laboratoire - Exigences relatives à la CEM - Partie 1: Exigences générales (IEC 61326-1:2020)

IEC 61326-1:2020 est disponible sous forme de IEC 61326-1:2020 RLV qui contient la Norme internationale et sa version Redline, illustrant les modifications du contenu technique depuis l'édition précédente.L’IEC 61326:2020 spécifie les exigences relatives à l'immunité et aux émissions concernant la compatibilité électromagnétique (CEM) pour les matériels électriques fonctionnant à partir d'une source d'alimentation ou d'une batterie inférieure à 1 000 V en courant alternatif ou 1 500 V en courant continu ou à partir du circuit mesuré. Elle concerne les matériels prévus pour un usage professionnel, pour les processus industriels et pour l'enseignement. Cela comprend les matériels et les dispositifs informatiques pour - le mesurage et les essais; - la commande; - les applications en LABORATOIRE; - les accessoires prévus pour être utilisés dans les cas susmentionnés (par exemple, matériel de manipulation d’échantillons), dans un usage en milieu industriel ou non industriel.

Električna oprema za merjenje, nadzor in laboratorijsko uporabo - Zahteve za elektromagnetno združljivost (EMC) - 1. del: Splošne zahteve (IEC 61326-1:2020)

General Information

Status
Published
Public Enquiry End Date
30-Oct-2019
Publication Date
17-Aug-2021
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
11-Jun-2021
Due Date
16-Aug-2021
Completion Date
18-Aug-2021

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SLOVENSKI STANDARD
SIST EN IEC 61326-1:2021
01-september-2021
Nadomešča:
SIST EN 61326-1:2013
Električna oprema za merjenje, nadzor in laboratorijsko uporabo - Zahteve za
elektromagnetno združljivost (EMC) - 1. del: Splošne zahteve (IEC 61326-1:2020)

Electrical equipment for measurement, control and laboratory use - EMC requirements -

Part 1: General requirements (IEC 61326-1:2020)
Elektrische Mess-, Steuer-, Regel- und Laborgeräte - EMV-Anforderungen - Teil 1:
Allgemeine Anforderungen (IEC 61326-1:2020)

Matériel électrique de mesure, de commande et de laboratoire - Exigences relatives à la

CEM - Partie 1: Exigences générales (IEC 61326-1:2020)
Ta slovenski standard je istoveten z: EN IEC 61326-1:2021
ICS:
19.080 Električno in elektronsko Electrical and electronic
preskušanje testing
33.100.01 Elektromagnetna združljivost Electromagnetic compatibility
na splošno in general
SIST EN IEC 61326-1:2021 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN IEC 61326-1:2021
---------------------- Page: 2 ----------------------
SIST EN IEC 61326-1:2021
EUROPEAN STANDARD EN IEC 61326-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2021

ICS 25.040.40; 17.220.20; 33.100.20 Supersedes EN 61326-1:2013 and all of its amendments

and corrigenda (if any)
English Version
Electrical equipment for measurement, control and laboratory
use - EMC requirements - Part 1: General requirements
(IEC 61326-1:2020)

Matériel électrique de mesure, de commande et de Elektrische Mess-, Steuer-, Regel- und Laborgeräte - EMV-

laboratoire - Exigences relatives à la CEM - Partie 1: Anforderungen - Teil 1: Allgemeine Anforderungen

Exigences générales (IEC 61326-1:2020)
(IEC 61326-1:2020)

This European Standard was approved by CENELEC on 2020-11-30. 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the

Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, 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

© 2021 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.

Ref. No. EN IEC 61326-1:2021 E
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SIST EN IEC 61326-1:2021
EN IEC 61326-1:2021 (E)
European foreword

The text of document 65A/975/FDIS, future edition 3 of IEC 61326-1, 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 61326-1:2021.
The following dates are fixed:
• latest date by which the document has to be implemented (dop) 2021-12-04
at national level by publication of an identical national
standard or by endorsement
• latest date by which the national standards conflicting with (dow) 2024-06-04
the document have to be withdrawn

This document supersedes EN 61326-1:2013 and all of its amendments and corrigenda (if any).

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.
Endorsement notice

The text of the International Standard IEC 61326-1:2020 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 60359 NOTE Harmonized as EN 60359
IEC 61000-6-1:2016 NOTE Harmonized as EN IEC 61000-6-1:2019 (not modified)
IEC 61000-6-2:2016 NOTE Harmonized as EN IEC 61000-6-2:2019 (not modified)
IEC 61010 (series) NOTE Harmonized as EN IEC 61010 (series)
IEC 61326-2 (series) NOTE Harmonized as EN 61326-2 (series)
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SIST EN IEC 61326-1:2021
EN IEC 61326-1:2021 (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 1990 International Electrotechnical Vocabulary. - -
Chapter 161: Electromagnetic compatibility
+ A1 1997 - -
+ A2 1998 - -
+ A3 2014 - -
+ A4 2014 - -
+ A5 2015 - -
+ A6 2016 - -
+ A7 2017 - -
+ A8 2018 - -

IEC 61000-3-2 2018 Electromagnetic compatibility (EMC) – Part EN IEC 61000-3-2 2019

3-2: Limits – Limits for harmonic current
emissions (equipment input current ≤16 A
per phase)
IEC 61000-3-3 2013 Electromagnetic compatibility (EMC) - Part EN 61000-3-3 2013
3-3: Limits - Limitation of voltage changes,
voltage fluctuations and flicker in public
low-voltage supply systems, for equipment
with rated current ≤16 A per phase and not
subject to conditional connection
+ A1 2017 + A1 2019

IEC 61000-3-11 2017 Electromagnetic compatibility (EMC) – Part EN IEC 61000-3-11 2019

3-11: Limits – Limitation of voltage
changes, voltage fluctuations and flicker in
public low-voltage supply systems –
Equipment with rated current ≤75 A and
subject to conditional connection
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SIST EN IEC 61326-1:2021
EN IEC 61326-1:2021 (E)
Publication Year Title EN/HD Year

IEC 61000-3-12 2011 Electromagnetic compatibility (EMC) - Part EN 61000-3-12 2011

3-12: Limits - Limits for harmonic currents
produced by equipment connected to
public low-voltage systems with input
current >16 A and ≤75 A per phase
IEC 61000-4-2 2008 Electromagnetic compatibility (EMC) - Part EN 61000-4-2 2009
4-2: Testing and measurement techniques
- Electrostatic discharge immunity test
IEC 61000-4-3 2006 Electromagnetic compatibility (EMC) - Part EN 61000-4-3 2006
4-3 : 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 EN 61000-4-4 2012
4-4: Testing and measurement techniques
- Electrical fast transient/burst immunity
test
IEC 61000-4-5 2014 Electromagnetic compatibility (EMC) - Part EN 61000-4-5 2014
4-5: Testing and measurement techniques
- Surge immunity test
+ A1 2017 + A1 2017
IEC 61000-4-6 2013 Electromagnetic compatibility (EMC) - Part EN 61000-4-6 2014
4-6: Testing and measurement techniques
- Immunity to conducted disturbances,
induced by radio-frequency fields
IEC 61000-4-8 2009 Electromagnetic compatibility (EMC) - Part EN 61000-4-8 2010
4-8: Testing and measurement techniques
- Power frequency magnetic field immunity
test

IEC 61000-4-11 2020 Electromagnetic compatibility (EMC) - Part EN IEC 61000-4-11 2020

4-11: Testing and measurement
techniques - Voltage dips, short
interruptions and voltage variations
immunity tests for equipment with input
current up to 16 A per phase
CISPR 11 (mod) 2015 Industrial, scientific and medical equipment EN 55011 2016
- Radio-frequency disturbance
characteristics - Limits and methods of
measurement
+ A1 2016 + A1 2017
- - + A11 2020
+ A2 2019 + A2 2021
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SIST EN IEC 61326-1:2021
IEC 61326-1
Edition 3.0 2020-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Electrical equipment for measurement, control and laboratory use –
EMC requirements –
Part 1: General requirements
Matériel électrique de mesure, de commande et de laboratoire –
Exigences relatives à la CEM –
Partie 1: Exigences générales
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 17.220.20; 25.040.40; 33.100.20 ISBN 978-2-8322-8947-1

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

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 7 ----------------------
SIST EN IEC 61326-1:2021
– 2 – IEC 61326-1:2020 © IEC 2020
CONTENTS

FOREWORD ........................................................................................................................... 4

INTRODUCTION ..................................................................................................................... 6

1 Scope .............................................................................................................................. 7

2 Normative references ...................................................................................................... 8

3 Terms, definitions and abbreviations ............................................................................... 9

3.1 Terms and definitions .............................................................................................. 9

3.2 Abbreviations ........................................................................................................ 12

4 General ......................................................................................................................... 12

5 EMC test plan ................................................................................................................ 12

5.1 General ................................................................................................................. 12

5.2 Configuration of EUT during testing ...................................................................... 13

5.2.1 General ......................................................................................................... 13

5.2.2 Composition of EUT ....................................................................................... 13

5.2.3 Assembly of EUT ........................................................................................... 13

5.2.4 I/O PORTS ...................................................................................................... 13

5.2.5 AUXILIARY EQUIPMENT ..................................................................................... 13

5.2.6 Cabling and earthing (grounding) ................................................................... 13

5.3 Operation conditions of EUT during testing ........................................................... 13

5.3.1 Operation modes ........................................................................................... 13

5.3.2 Environmental conditions ............................................................................... 14

5.3.3 EUT software during test ............................................................................... 14

5.4 Specification of FUNCTIONAL PERFORMANCE ............................................................ 14

5.5 Test description .................................................................................................... 14

6 Immunity requirements .................................................................................................. 14

6.1 Conditions during the tests.................................................................................... 14

6.2 Immunity test requirements ................................................................................... 14

6.3 Random aspects ................................................................................................... 17

6.4 Performance criteria ............................................................................................. 18

6.4.1 General ......................................................................................................... 18

6.4.2 Performance criterion A ................................................................................. 18

6.4.3 Performance criterion B ................................................................................. 18

6.4.4 Performance criterion C ................................................................................. 18

7 Emission requirements .................................................................................................. 19

7.1 Conditions during measurements .......................................................................... 19

7.2 Emission limits ...................................................................................................... 19

8 Test results and test report ............................................................................................ 19

9 Instructions for use ........................................................................................................ 20

Annex A (normative) Immunity test requirements for PORTABLE TEST AND MEASUREMENT

EQUIPMENT powered by battery or from the circuit being measured ........................................ 21

Annex B (informative) Guide for analysis and assessment for electromagnetic

compatibility.......................................................................................................................... 22

B.1 General ................................................................................................................. 22

B.2 Risk analysis......................................................................................................... 22

B.3 Risk assessment ................................................................................................... 22

Bibliography .......................................................................................................................... 24

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SIST EN IEC 61326-1:2021
IEC 61326-1:2020 © IEC 2020 – 3 –

Figure 1 – Examples of ports ................................................................................................ 11

Table 1 – Immunity test requirements for equipment intended to be used in a BASIC

ELECTROMAGNETIC ENVIRONMENT ............................................................................................ 15

Table 2 – Immunity test requirements for equipment intended to be used in an

INDUSTRIAL ELECTROMAGNETIC ENVIRONMENT ........................................................................... 16

Table 3 – Immunity test requirements for equipment intended to be used in a

CONTROLLED ELECTROMAGNETIC ENVIRONMENT ........................................................................ 17

Table A.1 – Immunity test requirements for PORTABLE TEST AND MEASUREMENT

EQUIPMENT ............................................................................................................................ 21

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SIST EN IEC 61326-1:2021
– 4 – IEC 61326-1:2020 © IEC 2020
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ELECTRICAL EQUIPMENT FOR MEASUREMENT,
CONTROL AND LABORATORY USE –
EMC REQUIREMENTS –
Part 1: General requirements
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, employees, servants or agents including individual experts and

members of its technical committees and IEC National Committees for any personal injury, property damage or

other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and

expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC

Publications.

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 61326-1 has been prepared by subcommittee 65A: System

aspects, of IEC technical committee 65: Industrial-process measurement, control and

automation.

This third edition cancels and replaces the second edition, published in 2012. This edition

constitutes a technical revision.

This edition includes the following significant technical changes with respect to the previous

edition:
– the immunity test levels and performance criteria have been reviewed;

– requirements for portable test and measurement equipment have been clarified and

amended;
---------------------- Page: 10 ----------------------
SIST EN IEC 61326-1:2021
IEC 61326-1:2020 © IEC 2020 – 5 –
– the description of the electromagnetic environments has been improved.
The text of this International Standard is based on the following documents:
FDIS Report on voting
65A/975/FDIS 65A/985/RVD

Full information on the voting for the approval of this International Standard can be found in

the report on voting indicated in the above table.

This document has been drafted in accordance with the ISO/IEC Directives, Part 2.

In this document, the following print types are used:
• Terms used throughout this document which have been defined in Clause 3: SMALL
CAPITALS

A list of all 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 document will remain unchanged until the

stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to

the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
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SIST EN IEC 61326-1:2021
– 6 – IEC 61326-1:2020 © IEC 2020
INTRODUCTION

Instruments and equipment within the scope of this document may often be geographically

widespread and hence operate under a wide range of environmental conditions.

The limitation of undesired electromagnetic emissions ensures that no other equipment

installed nearby is unduly influenced by the equipment under consideration. The limits are

more or less specified by, and therefore taken from, IEC and International Special Committee

on Radio Interference (CISPR) publications.

However, the equipment should function without undue degradation in an electromagnetic

environment typical for the locations where it is intended to be operated. In this respect, the

document specifies three different types of electromagnetic environment and the levels for

immunity. More detailed information about issues related to electromagnetic environments are

given in IEC TR 61000-2-5. Special risks, involving for example nearby or direct lightning

strikes, circuit-breaking, or exceptionally high electromagnetic radiation in close proximity, are

not covered.

Complex electric and/or electronic systems should require EMC planning in all phases of their

design and installation, taking into consideration the electromagnetic environment, any

special requirements, and the severity of failures.

This part of IEC 61326 specifies the EMC requirements that are generally applicable to all

equipment within its scope. For certain types of equipment, these requirements will be

supplemented or modified by the special requirements of one, or more than one, particular

part IEC 61326-2 (all parts). These should be read in conjunction with the IEC 61326-1

requirements.
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SIST EN IEC 61326-1:2021
IEC 61326-1:2020 © IEC 2020 – 7 –
ELECTRICAL EQUIPMENT FOR MEASUREMENT,
CONTROL AND LABORATORY USE –
EMC REQUIREMENTS –
Part 1: General requirements
1 Scope

This part of IEC 61326 specifies requirements for immunity and emissions regarding electro-

magnetic compatibility (EMC) for electrical equipment, operating from a supply or battery of

less than 1 000 V AC or 1 500 V DC or from the circuit being measured. Equipment intended

for professional, industrial-process, industrial-manufacturing and educational use is covered

by this part. It includes equipment and computing devices for
– measurement and test;
– control;
– LABORATORY use;

– accessories intended for use with the above (such as sample handling equipment),

intended to be used in industrial and non-industrial locations.

Computing devices and assemblies and similar equipment within the scope of information

technology equipment (ITE) and complying with applicable ITE EMC standards can be used in

systems within the scope of this part of IEC 61326 without additional testing, if they are

suitable for the intended electromagnetic environment.

It is generally considered that this product family standard takes precedence over the

corresponding generic EMC standards.
The following equipment is covered by this document.
a) Electrical measurement and test equipment

This is equipment which, by electrical means, measures, indicates or records one or more

electrical or non-electrical quantities, also non-measuring equipment such as signal

generators, measurement standards, power supplies and transducers.
b) Electrical control equipment

This is equipment which controls one or more output quantities to specific values, with

each value determined by manual settings, by local or remote programming, or by one or

more input variables. This includes industrial process measurement and control (IPMC)

equipment, which consists of devices such as:
– process controllers and regulators;
– programmable controllers;
– power supply units for equipment and systems (centralized or dedicated);
– analogue/digital indicators and recorders;
– process instrumentation;
– transducers, positioners, intelligent actuators, etc.

c) Electrical LABORATORY equipment, including In Vitro Diagnostic (IVD) medical equipment

This is equipment used to prepare or analyse materials, or measure, indicate or monitor

physical quantities. This equipment might also be used in areas other than laboratories.

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SIST EN IEC 61326-1:2021
– 8 – IEC 61326-1:2020 © IEC 2020

d) Equipment a), b) or c) as above when being equipped with components having radio

functionality, for example for wireless communication.

Equipment within the scope of this document might be operated in different electromagnetic

environments; depending on the electromagnetic environment different emission and immunity

test requirements are applicable.
This document considers three types of electromagnetic environments:
• BASIC ELECTROMAGNETIC ENVIRONMENT;
• INDUSTRIAL ELECTROMAGNETIC ENVIRONMENT;
• CONTROLLED ELECTROMAGNETIC ENVIRONMENT.
Corresponding immunity test requirements are described in Clause 6.

In terms of emission requirements, equipment shall be classified in Class A or Class B

equipment, as per the requirements and procedure of CISPR 11. The corresponding emission

requirements are described in Clause 7.

The specified emission and immunity requirements aim at achieving electromagnetic

compatibility between equipment covered in this document and other equipment that might

operate at locations with electromagnetic environments considered in this document.

Guidance for an assessment concerning the risk for achieving EMC is given in Annex B.

2 Normative references

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.
IEC 60050-161:1990, International Electrotechnical Vocabulary (IEV) – Part 161:
Electromagnetic compatibility
IEC 60050-161:1990/AMD1:1997
IEC 60050-161:1990/AMD2:1998
IEC 60050-161:1990/AMD3:2014
IEC 60050-161:1990/AMD4:2014
IEC 60050-161:1990/AMD5:2015
IEC 60050-161:1990/AMD6:2016
IEC 60050-161:1990/AMD7:2017
IEC 60050-161:1990/AMD8:2018
(available at )

IEC 61000-3-2:2018, Electromagnetic compatibility (EMC) – Part 3-2: Limits – Limits for

harmonic current emissions (equipment input current ≤16 A per phase)

IEC 61000-3-3:2013, Electromagnetic compatibility (EMC) – Part 3-3: Limits – Limitation of

voltage changes, voltage fluctuations and flicker in public low-voltage supply systems, for

equipment with rated current ≤16 A per phase and not subject to conditional connection

IEC 61000-3-3:2013/AMD1:2017

IEC 61000-3-11:2017, Electromagnetic compatibility (EMC) – Part 3-11: Limits – Limitation of

voltage changes, voltage fluctuations and flicker in public low-voltage supply systems –

Equipment with rated current ≤75 A and subject to conditional connection
---------------------- Page: 14 ----------------------
SIST EN IEC 61326-1:2021
IEC 61326-1:2020 © IEC 2020 – 9 –

IEC 61000-3-12:2011, Electromagnetic compatibility (EMC) – Part 3-12: Limits – Limits for

harmonic currents produced by equipment connected to public low-voltage systems with input

current >16 A and ≤75 A per phase
IEC 61000-4-2:2008, Electromagnetic compatibility (EMC) – Part 4-2: Testing and
measurement techniques – Electrostatic discharge immunity test
IEC 61000-4-3:2006, Electromagnetic compatibility (EMC) – Part 4-3: Testing and

measurement techniques – Radiated, radio-frequency, electromagnetic field immunity test

IEC 61000-4-3:2006/AMD1:2007
IEC 61000-4-3:2006/AMD2:2010

IEC 61000-4-4:2012, Electromagnetic compatibility (EMC) – Part 4-4: Testing and measure-

ment techniques – Electrical fast transient/burst immunity
...

SLOVENSKI STANDARD
oSIST prEN IEC 61326-1:2019
01-oktober-2019
Električna oprema za merjenje, kontrolo in laboratorijsko uporabo - Zahteve za
elektromagnetno združljivost (EMC) - 1. del: Splošne zahteve

Electrical equipment for measurement, control and laboratory use - EMC requirements -

Part 1: General requirements

Matériel électrique de mesure, de commande et de laboratoire - Exigences relatives à la

CEM - Partie 1: Exigences générales
Ta slovenski standard je istoveten z: prEN IEC 61326-1:2019
ICS:
19.080 Električno in elektronsko Electrical and electronic
preskušanje testing
33.100.01 Elektromagnetna združljivost Electromagnetic compatibility
na splošno in general
oSIST prEN IEC 61326-1:2019 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN IEC 61326-1:2019
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oSIST prEN IEC 61326-1:2019
65A/922/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 61326-1 ED3
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2019-08-23 2019-11-15
SUPERSEDES DOCUMENTS:
65A/902/CD, 65A/912A/CC
IEC SC 65A: SYSTEM ASPECTS
SECRETARIAT: SECRETARY:
United Kingdom Mr Petar Luzajic
OF INTEREST TO THE FOLLOWING COMMITTEES: PROPOSED HORIZONTAL STANDARD:
TC 66, TC 77, SC 77A
Other TC/SCs are requested to indicate their interest, if any, in
this CDV to the secretary.
FUNCTIONS CONCERNED:
EMC ENVIRONMENT QUALITY ASSURANCE SAFETY

SUBMITTED FOR CENELEC PARALLEL VOTING NOT SUBMITTED FOR CENELEC PARALLEL VOTING

Attention IEC-CENELEC parallel voting
The attention of IEC National Committees, members of
CENELEC, is drawn to the fact that this Committee Draft for Vote
(CDV) is submitted for parallel voting.
The CENELEC members are invited to vote through the
CENELEC online voting system.

This document is still under study and subject to change. It should not be used for reference purposes.

Recipients of this document are invited to submit, with their comments, notification of any relevant patent rights of which they are

aware and to provide supporting documentation.
TITLE:

Electrical equipment for measurement, control and laboratory use - EMC requirements - Part 1: General

requirements
PROPOSED STABILITY DATE: 2023
NOTE FROM TC/SC OFFICERS:

Copyright © 2019 International Electrotechnical Commission, IEC. All rights reserved. It is permitted to download this

electronic file, to make a copy and to print out the content for the sole purpose of preparing National Committee positions.

You may not copy or "mirror" the file or printed version of the document, or any part of it, for any other purpose without

permission in writing from IEC.
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65A/922/CDV – 2 – IEC CDV 61326-1 © IEC 2019
1 CONTENTS

2 FOREWORD ........................................................................................................................... 4

3 INTRODUCTION ..................................................................................................................... 6

4 1 Scope ............................................................................................................................... 7

5 2 Normative references ....................................................................................................... 8

6 3 Terms, definitions and abbreviated terms ......................................................................... 9

7 3.1 Terms and definitions .............................................................................................. 9

8 3.2 Abbreviated terms ................................................................................................. 11

9 4 General .......................................................................................................................... 12

10 5 EMC test plan ................................................................................................................. 12

11 5.1 General ................................................................................................................. 12

12 5.2 Configuration of EUT during testing ....................................................................... 12

13 5.2.1 General ..................................................................................................... 12

14 5.2.2 Composition of EUT ................................................................................... 13

15 5.2.3 Assembly of EUT ....................................................................................... 13

16 5.2.4 I/O PORTS .................................................................................................. 13

17 5.2.5 AUXILIARY EQUIPMENT ................................................................................. 13

18 5.2.6 Cabling and earthing (grounding) ............................................................... 13

19 5.3 Operation conditions of EUT during testing ............................................................ 13

20 5.3.1 Operation modes ....................................................................................... 13

21 5.3.2 Environmental conditions ........................................................................... 13

22 5.3.3 EUT software during test ........................................................................... 13

23 5.4 Specification of FUNCTIONAL PERFORMANCE ............................................................. 13

24 5.5 Test description ..................................................................................................... 13

25 6 Immunity requirements ................................................................................................... 14

26 6.1 Conditions during the tests .................................................................................... 14

27 6.2 Immunity test requirements ................................................................................... 14

28 6.3 Random aspects.................................................................................................... 17

29 6.4 Performance criteria .............................................................................................. 18

30 6.4.1 General ..................................................................................................... 18

31 6.4.2 Performance criterion A ............................................................................. 18

32 6.4.3 Performance criterion B ............................................................................. 18

33 6.4.4 Performance criterion C ............................................................................. 18

34 7 Emission requirements ................................................................................................... 18

35 7.1 Conditions during measurements .......................................................................... 18

36 7.2 Emission limits ...................................................................................................... 19

37 8 Test results and test report ............................................................................................. 19

38 9 Instructions for use ......................................................................................................... 19

39 Annex A (normative) Immunity test requirements for PORTABLE TEST AND MEASUREMENT

40 EQUIPMENT powered by battery or from the circuit being measured.................................. 20

41 Annex B (informative) Risk analysis and risk assessment in the context of achieving

42 electromagnetic compatibility .......................................................................................... 21

43 B.1 General ................................................................................................................. 21

44 B.2 Risk analysis ......................................................................................................... 21

45 B.3 Risk assessment ................................................................................................... 21

46 Bibliography .......................................................................................................................... 23

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48 Figure 1 – Examples of ports ................................................................................................ 11

50 Table 1 – Immunity test requirements for equipment intended to be used in a BASIC

51 ELECTROMAGNETIC ENVIRONMENT ............................................................................................ 15

52 Table 2 – Immunity test requirements for equipment intended to be used in an

53 INDUSTRIAL ELECTROMAGNETIC ENVIRONMENT ........................................................................... 16

54 Table 3 – Immunity test requirements for equipment intended to be used in a

55 CONTROLLED ELECTROMAGNETIC ENVIRONMENT ........................................................................ 17

56 Table A.1 – Immunity test requirements for PORTABLE TEST AND MEASUREMENT

57 EQUIPMENT ............................................................................................................................ 20

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60 INTERNATIONAL ELECTROTECHNICAL COMMISSION
61 ____________
63 ELECTRICAL EQUIPMENT FOR MEASUREMENT,
64 CONTROL AND LABORATORY USE –
65 EMC REQUIREMENTS –
67 Part 1: General requirements
70 FOREWORD

71 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising

72 all national electrotechnical committees (IEC National Committees). The object of IEC is to promote

73 international co-operation on all questions concerning standardization in the electrical and electronic fields. To

74 this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,

75 Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC

76 Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested

77 in the subject dealt with may participate in this preparatory work. International, governmental and non-

78 governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely

79 with the International Organization for Standardization (ISO) in accordance with conditions determined by

80 agreement between the two organizations.

81 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international

82 consensus of opinion on the relevant subjects since each technical committee has representation from all

83 interested IEC National Committees.

84 3) IEC Publications have the form of recommendations for international use and are accepted by IEC National

85 Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC

86 Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any

87 misinterpretation by any end user.

88 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications

89 transparently to the maximum extent possible in their national and regional publications. Any divergence

90 between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in

91 the latter.

92 5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity

93 assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any

94 services carried out by independent certification bodies.

95 6) All users should ensure that they have the latest edition of this publication.

96 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and

97 members of its technical committees and IEC National Committees for any personal injury, property damage or

98 other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and

99 expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC

100 Publications.

101 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is

102 indispensable for the correct application of this publication.

103 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of

104 patent rights. IEC shall not be held responsible for identifying any or all such patent rights.

105 International Standard IEC 61326-1 has been prepared by subcommittee 65A: System

106 aspects, of IEC technical committee 65: Industrial-process measurement, control and

107 automation.

108 This third edition cancels and replaces the second edition, published in 2012. This edition

109 constitutes a technical revision.

110 The significant technical changes with respect to the previous edition are as follows:

111 – the immunity test levels and performance criteria have been reviewed;

112 – requirements for PORTABLE TEST AND MEASUREMENT EQUIPMENT have been clarified and

113 amended;
114 – the description of the electromagnetic environments has been improved.
115
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116 The text of this standard is based on the following documents:
FDIS Report on voting
65A/XXX/FDIS 65A/XXX/RVD
117

118 Full information on the voting for the approval of this standard can be found in the report on

119 voting indicated in the above table.

120 This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.

121 In this standard the following print types are used:

122 • Terms used throughout this standard which have been defined in Clause 3: SMALL

123 CAPITALS

124 A list of all parts of the IEC 61326 series under the general title Electrical equipment for

125 measurement, control and laboratory use – EMC requirements, can be found on the IEC

126 website.

127 The committee has decided that the contents of this publication will remain unchanged until

128 the stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data

129 related to the specific publication. At this date, the publication will be
130 • reconfirmed,
131 • withdrawn,
132 • replaced by a revised edition, or
133 • amended.
134
135
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136 INTRODUCTION

137 Instruments and equipment within the scope of this standard may often be geographically

138 widespread and hence operate under a wide range of environmental conditions.

139 The limitation of undesired electromagnetic emissions ensures that no other equipment,

140 installed nearby, is unduly influenced by the equipment under consideration. The limits are

141 more or less specified by, and therefore taken from, IEC and International Special Committee

142 on Radio Interference (CISPR) publications.

143 However, the equipment should function without undue degradation in an electromagnetic

144 environment typical for the locations where it is intended to be operated. In this respect the

145 standard specifies three different types of electromagnetic environment and the levels for

146 immunity. More detailed information about issues related to electromagnetic environments are

147 given in IEC 61000-2-5. Special risks, involving for example nearby or direct lightning strikes,

148 circuit-breaking, or exceptionally high electromagnetic radiation in close proximity, are not

149 covered.

150 Complex electric and/or electronic systems should require EMC planning in all phases of their

151 design and installation, taking into consideration the electromagnetic environment, any

152 special requirements, and the severity of failures.

153 This part of IEC 61326 specifies the EMC requirements that are generally applicable to all

154 equipment within its scope. For certain types of equipment, these requirements will be

155 supplemented or modified by the special requirements of one, or more than one, particular

156 part within IEC 61326-2 series. These should be read in conjunction with the IEC 61326-1

157 requirements.
158
159
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160 ELECTRICAL EQUIPMENT FOR MEASUREMENT,
161 CONTROL AND LABORATORY USE –
162 EMC REQUIREMENTS –
163
164 Part 1: General requirements
165
166
167
168 1 Scope

169 This part of IEC 61326 specifies requirements for immunity and emissions regarding electro-

170 magnetic compatibility (EMC) for electrical equipment, operating from a supply or battery of

171 less than 1 000 V AC or 1 500 V DC or from the circuit being measured. Equipment intended

172 for professional, industrial-process, industrial-manufacturing and educational use is covered

173 by this part. It includes equipment and computing devices for
174 – measurement and test;
175 – control;
176 – LABORATORY use;

177 – accessories intended for use with the above (such as sample handling equipment),

178 intended to be used in industrial and non-industrial locations.

179 Computing devices and assemblies and similar equipment within the scope of Information

180 Technology Equipment (ITE) and complying with applicable ITE EMC standards may be used

181 in systems within the scope of this part of IEC 61326 without additional testing, if they are

182 suitable for the intended electromagnetic environment.

183 It is generally considered that this product family standard takes precedence over the

184 corresponding generic EMC standards.
185 The following equipment is covered by this standard.
186 a) Electrical measurement and test equipment

187 This is equipment which, by electrical means, measures, indicates or records one or more

188 electrical or non-electrical quantities, also non-measuring equipment such as signal

189 generators, measurement standards, power supplies and transducers.
190 b) Electrical control equipment

191 This is equipment which controls one or more output quantities to specific values, with

192 each value determined by manual settings, by local or remote programming, or by one or

193 more input variables. This includes Industrial Process Measurement and Control (IPMC)

194 equipment, which consists of devices such as:
195 – process controllers and regulators;
196 – programmable controllers;
197 – power supply units for equipment and systems (centralized or dedicated);
198 – analogue/digital indicators and recorders;
199 – process instrumentation;
200 – transducers, positioners, intelligent actuators, etc.
201
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202 c) Electrical LABORATORY equipment, including In Vitro Diagnostic (IVD) equipment

203 This is equipment used to prepare or analyse materials, or measure, indicate or monitor

204 physical quantities. This equipment might also be used in areas other than laboratories.

205 d) Equipment a), b) or c) as above when being equipped with components having radio

206 functionality, for example for wireless communication.

207 Equipment within the scope of this standard might be operated in different electromagnetic

208 environments; depending on the electromagnetic environment different emission and immunity

209 test requirements are applicable.
210 This standard considers three types of electromagnetic environments:
211 • basic electromagnetic environment;
212 • industrial electromagnetic environment;
213 • controlled electromagnetic environment.
214 Corresponding immunity test requirements are described in Clause 6.

215 In terms of emission requirements, equipment shall be classified in Class A or Class B

216 equipment, as per the requirements and procedure of CISPR 11. The corresponding emission

217 requirements are described in Clause 7.

218 The specified emission and immunity requirements aim at achieving electromagnetic

219 compatibility between equipment covered in this standard and other equipment that might

220 operate at locations with electromagnetic environments considered in this standard. Guidance

221 for an assessment concerning the risk for achieving EMC is given in Annex B.
222 2 Normative references

223 The following documents, in whole or in part, are normatively referenced in this document and

224 are indispensable for its application. For dated references, only the edition cited applies. For

225 undated references, the latest edition of the referenced document (including any

226 amendments) applies.

227 IEC 60050 (all parts), International Electrotechnical Vocabulary (available at

228 )

229 IEC 61000-3-2:2018, Electromagnetic compatibility (EMC) – Part 3-2: Limits – Limits for

230 harmonic current emissions (equipment input current ≤ 16 A per phase)

231 IEC 61000-3-3:2013, Electromagnetic compatibility (EMC) – Part 3-3: Limits – Limitation of

232 voltage changes, voltage fluctuations and flicker in public low-voltage supply systems, for

233 equipment with rated current ≤ 16 A per phase and not subject to conditional connection

234 Amendment 1:2017

235 IEC 61000-3-11:2017, Electromagnetic compatibility (EMC) – Part 3-11: Limits – Limitation of

236 voltage changes, voltage fluctuations and flicker in public low-voltage supply systems –

237 Equipment with rated current ≤75 A and subject to conditional connection

238 IEC 61000-3-12:2011, Electromagnetic compatibility (EMC) – Part 3-12: Limits – Limits for

239 harmonic currents produced by equipment connected to public low-voltage systems with input

240 current >16 A and ≤75 A per phase

241 IEC 61000-4-2:2008, Electromagnetic compatibility (EMC) – Part 4-2: Testing and measure-

242 ment techniques – Electrostatic discharge immunity test
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243 IEC 61000-4-3:2006, Electromagnetic compatibility (EMC) – Part 4-3: Testing and measure-

244 ment techniques – Radiated, radio-frequency, electromagnetic field immunity test

245 Amendment 1:2007
246 Amendment 2:2010

247 IEC 61000-4-4:2012, Electromagnetic compatibility (EMC) – Part 4-4: Testing and measure-

248 ment techniques – Electrical fast transient/burst immunity test

249 IEC 61000-4-5:2014, Electromagnetic compatibility (EMC) – Part 4-5: Testing and measure-

250 ment techniques – Surge immunity test
251 Amendment 1:2017

252 IEC 61000-4-6:2013, Electromagnetic compatibility (EMC) – Part 4-6: Testing and measure-

253 ment techniques – Immunity to conducted disturbances, induced by radio-frequency fields

254 IEC 61000-4-8:2009, Electromagnetic compatibility (EMC) – Part 4-8: Testing and measure-

255 ment techniques – Power frequency magnetic field immunity test

256 IEC 61000-4-11:2004, Electromagnetic compatibility (EMC) – Part 4-11: Testing and measure-

257 ment techniques – Voltage dips, short interruptions and voltage variations immunity tests

258 Amendment 1:2017

259 CISPR 11:2015, Industrial, scientific and medical equipment – Radio-frequency disturbance

260 characteristics – Limits and methods of measurement
261 Amendment 1:2016
262 Amendment 2:2019
263 3 Terms, definitions and abbreviations
264 3.1 Terms and definitions

265 For the purposes of this document, the terms and definitions given in IEC 60050-161 as well

266 as the following apply.
267 3.1.1
268 basic electromagnetic environment

269 environment existing at locations characterized by being supplied directly at low voltage from

270 the public mains network
271 EXAMPLES
272 – residential properties, for example houses, apartments;
273 – retail outlets, for example shops, supermarkets;
274 – business premises, for example offices, banks;

275 – areas of public entertainment, for example cinemas, public bars, dance halls;

276 – outdoor locations, for example petrol stations, car parks, amusement and sports centres;

277 – light-industrial locations, for example workshops, laboratories, service centres.

278 3.1.2
279 class A equipment

280 equipment suitable for use in all establishments other than domestic and those directly

281 connected to a low voltage power supply network which supplies buildings used for domestic

282 purposes
283 [SOURCE: derived from CISPR 11:2015, 5.2]
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284 3.1.3
285 class B equipment

286 equipment suitable for use in domestic establishments and in establishments directly

287 connected to a low voltage power supply network which supplies buildings used for domestic

288 purposes
289 [SOURCE: derived from CISPR 11:2015, 5.2]
290 3.1.4
291 controlled electromagnetic environment

292 environment usually characterized by recognition and control of EMC threats by users of the

293 equipment or by design of the installation
294 3.1.5
295 enclosure port

296 physical boundary of equipment through which electromagnetic fields may radiate or impinge

297 3.1.6
298 functional performance

299 operational performance characteristics specified by the manufacturer of the equipment,

300 defining the ability of equipment to achieve the intended functions
301 3.1.7
302 industrial electromagnetic environment

303 environment existing at locations characterized by a separate power network, in most cases

304 supplied from a high- or medium-voltage transformer, dedicated for the supply of installations

305 feeding manufacturing or similar plants with one or more of the following conditions:

306 – frequent switching of heavy inductive or capacitive loads;
307 – high currents and associated magnetic fields;

308 – presence of Industrial, Scientific and Medical (ISM) equipment (for example, welding

309 machines)
310 3.1.8
311 laboratory

312 test and measurement area that is specifically used for analysis, testing and servicing and

313 where equipment is operated by trained personnel
314 3.1.9
315 long-distance lines

316 lines within a building which are longer than 30 m, or which leave the building (including lines

317 of outdoor installations)
318 3.1.10
319 port

320 any particular interface of the specific equipment or system with the external electromagnetic

321 environment
322 EXAMPLE See Figure 1 for an example of Equipment Under Test (EUT).

323 Note 1 to entry: I/O ports are input, output or bi-directional, measurement, control, or data ports.

324 Note 2 to entry: Within this document, ports intended to be connected with earth potential for functional reasons

325 (functional earth ports) are considered as I/O ports

326 Note 3 to entry: Within this document the protective earth port (if any) is considered as part of the POWER PORT.

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Enclosure port
AC power port
EUT
DC power port I/O port
IEC 1277/12
327
328 Figure 1 – Examples of ports
329 3.1.11
330 power port

331 port at which a conductor or cable, carrying the electrical input/output power needed for the

332 operation (functioning), is connected to the equipment
333 3.1.12
334 portable test and measurement equipment

335 test and/or measuring equipment designed to be easily carried by hand and to be connected

336 and disconnected by the user
337 3.1.13
338 type test
339 conformity test made on one or more items representative of the production
340 [SOURCE: IEC 60050-151:2001, 151-16-16]
341 3.1.14
342 auxiliary equipment (AE)

343 equipment necessary to provide the equipment under test (EUT) with the signals required for

344 normal operation and equipment to verify the performance of the EUT
345 3.1.15
346 performance level
347 specified operation of equipment under conditions of intended use
348 3.1.16
349 degradation of performance
350 PERFORMANCE LEVEL
operation of equipment at a worse
351 3.1.17
352 loss of performance
353 operation of equipment outside a specified PERFORMANCE LEVEL
354 3.1.18
355 loss of function
356 one (or more) of the equipment’s functions is unusable
357 3.2 Abbreviations
358 EMC electromagnetic compatibility
359 ESD electrostatic discharge
360 EUT equipment under test
361 I/O input/output
362 RF radio frequency
363 UPS uninterruptable power supply
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364
365 4 General

366 Equipment and systems within the scope of this standard can be subjected to various kinds of

367 electromagnetic disturbances, conducted by power, measurement or control lines, or radiated

368 from the environment. The types and levels of disturbances depend on the particular

369 conditions in which the systems, subsystems o
...

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