IEC 61326-1:2020

IEC 61326-1 ®
Edition 3.0 2020-10
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Electrical equipment for measurement, control and laboratory use –
EMC requirements –
Part 1: General requirements
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IEC 61326-1 ®
Edition 3.0 2020-10
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Electrical equipment for measurement, control and laboratory use –

EMC requirements –
Part 1: General requirements
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 17.220.20; 25.040.40; 33.100.20 ISBN 978-2-8322-8994-5

– 2 – IEC 61326-1:2020 RLV © IEC 2020
CONTENTS
FOREWORD . 4
INTRODUCTION . 2
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 . 13
5.1 General . 13
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 . 14
5.2.6 Cabling and earthing (grounding) . 14
5.3 Operation conditions of EUT during testing . 14
5.3.1 Operation modes . 14
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 . 15
6.3 Random aspects . 21
6.4 Performance criteria . 22
6.4.1 General . 22
6.4.2 Performance criterion A . 22
6.4.3 Performance criterion B . 22
6.4.4 Performance criterion C . 22
7 Emission requirements . 23
7.1 Conditions during measurements . 23
7.2 Emission limits . 23
8 Test results and test report . 24
9 Instructions for use . 24
Annex A (normative) Immunity test requirements for PORTABLE TEST AND MEASUREMENT
EQUIPMENT powered by battery or from the circuit being measured . 25
Annex B (informative) Guide for analysis and assessment for electromagnetic
compatibility. 27
B.1 General . 27
B.2 Risk analysis. 27
B.3 Risk assessment . 27
Bibliography . 29

Figure 1 – Examples of ports . 11

Table 1 – Immunity test requirements for equipment intended to be used in a BASIC
ELECTROMAGNETIC ENVIRONMENT . 16
Table 2 – Immunity test requirements for equipment intended to be used in an
INDUSTRIAL ELECTROMAGNETIC ENVIRONMENT . 18
Table 3 – Immunity test requirements for equipment intended to be used in a
CONTROLLED ELECTROMAGNETIC ENVIRONMENT . 20
Table A.1 – Immunity test requirements for PORTABLE TEST AND MEASUREMENT
EQUIPMENT . 25

– 4 – IEC 61326-1:2020 RLV © IEC 2020
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ELECTRICAL EQUIPMENT FOR MEASUREMENT,
CONTROL AND LABORATORY USE –
EMC REQUIREMENTS –
Part 1: General requirements
FOREWORD
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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;
– 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 wh
...