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IEC 62026-1
Edition 3.0 2019-05
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Low-voltage switchgear and controlgear – Controller-device interfaces (CDIs) –
Part 1: General rules
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IEC 62026-1
Edition 3.0 2019-05
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Low-voltage switchgear and controlgear – Controller-device interfaces (CDIs) –
Part 1: General rules
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 29.130.20 ISBN 978-2-8322-6929-9
– 2 – IEC 62026-1:2019 RLV © IEC 2019
CONTENTS
FOREWORD . 3
INTRODUCTION . 2
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 Classifications . 8
5 Characteristics . 9
5.1 CDI components . 9
5.2 Interfaces . 9
5.3 Topology . 9
5.4 Information exchanges . 9
5.5 Attributes . 9
6 Product information . 10
6.1 Instructions for installation, operation and maintenance . 10
6.2 Profiles . 10
6.3 Marking . 10
6.4 Degree of protection . 10
7 Normal service, mounting and transport conditions . 10
7.1 General . 10
7.2 Normal service conditions . 10
7.2.1 General . 10
7.2.2 Ambient air temperature . 10
7.2.3 Altitude . 11
7.2.4 Climatic conditions . 11
7.3 Conditions during transport and storage . 11
7.4 Mounting . 11
8 Constructional and performance requirements . 11
8.1 General . 11
8.2 Electromagnetic compatibility (EMC) . 12
8.2.1 Immunity . 12
8.2.2 Emission . 12
8.2.3 EMC tests . 13
9 Tests . 13
9.1 General . 13
9.2 Type tests . 13
9.3 Electromagnetic compatibility . 13
Bibliography . 14
Table 1 – Immunity requirements . 12
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR –
CONTROLLER-DEVICE INTERFACES (CDIs) –
Part 1: General rules
FOREWORD
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This redline version of the official IEC Standard allows the user to identify the changes
made to the previous edition. A vertical bar appears in the margin wherever a change
has been made. Additions are in green text, deletions are in strikethrough red text.
– 4 – IEC 62026-1:2019 RLV © IEC 2019
International Standard IEC 62026-1 has been prepared by subcommittee 121A: Low-voltage
switchgear and controlgear, of IEC technical committee 121: Switchgear and controlgear and
their assemblies for low voltage.
This third edition cancels and replaces the second edition published in 2007. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) additional requirements for safety information and instructions, including the measures to
be taken, if any, for achieving EMC compliance;
b) EMC immunity requirements aligned with current IEC 61000-6 series of standards.
Radiated radio-frequency electromagnetic fields test level increased to 6 GHz;
c) EMC emissions requirements aligned with current CISPR 11 publication.
The text of this International Standard is based on the following documents:
FDIS Report on voting
121A/280/FDIS 121A/295/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.
A list of all parts of the IEC 62026, under the general title Low-voltage switchgear and
controlgear – Controller-device interfaces (CDIs), 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.
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 publication using a colour printer.
INTRODUCTION
The class of controller-device interfaces (CDIs) covered in this document includes industrial
CDIs for control systems, factory automation and process automation.
Industrial CDIs have proliferated to meet specific user needs, but no single CDI meets all
needs. The reason for multiple solutions is the wide range of physical, usage, information
content and configuration requirements. The physical requirements have resulted in CDIs with
widely differing signal and line conditioning mechanisms in order to meet distance, node count
and environmental considerations.
While there is wide variation in CDI technologies, there are common components, interfaces
and environmental requirements that are specified by this document. Standardized definitions
of these common CDI requirements assist the user
...