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IEC 61969-1
Edition 3.0 2020-05
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Mechanical structures for electrical and electronic equipment –
Outdoor enclosures –
Part 1: Design guidelines
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IEC 61969-1
Edition 3.0 2020-05
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Mechanical structures for electrical and electronic equipment –
Outdoor enclosures –
Part 1: Design guidelines
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 31.240 ISBN 978-2-8322-8358-5
– 2 – IEC 61969-1:2020 RLV © IEC 2020
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 7
3 Terms and definitions . 8
4 Coordination dimensions . 9
5 Environmental requirements, tests and safety aspects . 9
5.1 Classification of environmental conditions . 9
5.2 Static load. 11
5.3 Dynamic stress . 11
5.4 Seismic performance . 11
6 Electromagnetic shielding . 12
7 Thermal management and acoustic noise suppression . 12
Bibliography . 13
Figure 1 – Typical outdoor enclosure . 6
Figure 2 – Locations of outdoor enclosures . 9
Table 1 – Environmental conditions . 10
Table 2 – Safety aspects . 11
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
MECHANICAL STRUCTURES FOR ELECTRICAL AND
ELECTRONIC EQUIPMENT – OUTDOOR ENCLOSURES –
Part 1: Design guidelines
FOREWORD
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This redline version of the official IEC Standard allows the user to identify the changes
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– 4 – IEC 61969-1:2020 RLV © IEC 2020
International Standard IEC 61969-1 has been prepared by subcommittee 48D: Mechanical
structures for electrical and electronic equipment, of IEC technical committee 48: Electrical
connectors and mechanical structures for electrical and electronic equipment.
This third edition cancels and replaces the second edition published in 2011. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) alignment with the content of ETSI EN 300 019 and IEC 60721 series latest editions,
particularly with the actualization of climate conditions;
b) new requirements added to reflect market requirements on environmental issues;
c) improvement on terminology and overall editorial improvement.
The text of this International Standard is based on the following documents:
FDIS Report on voting
48D/720/FDIS 48D/723/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 in the IEC 61969 series, published under the general title Mechanical structures
for electrical and electronic equipment – Outdoor enclosures, can be found on the IEC website.
Future standards in this series will carry the new general title as cited above. Titles of existing
standards in this series will be updated at the time of the next edition.
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 document using a colour printer.
INTRODUCTION
This part of IEC 61969 is intended as a generic guide for the development of further parts within
this series of standards, and it provides design guidelines for outdoor enclosures.
The products covered by IEC 61969 (all parts) are empty enclosures for outdoor locations, to
be equipped with application-specific solutions combinations of electrical and electronic
equipment, and to be used at non-weather protected locations above ground. This standard is
followed by
IEC 61969 (all parts) consists of:
– a design guidelines general part (IEC 61969-1);
– a coordination dimension standard (IEC 61969-2 Ed 2);
– an environmental requirements and tests, safety aspects standard (IEC 61969-3 Ed 2).
IEC 61969-2 and IEC 61969-3 should be read in conjunction with this document.
– 6 – IEC 61969-1:2020 RLV © IEC 2020
MECHANICAL STRUCTURES FOR ELECTRICAL AND
ELECTRONIC EQUIPMENT – OUTDOOR ENCLOSURES –
Part 1: Design guidelines
1 Scope
This part of IEC 61969 contains design guidelines for outdoor enclosures and is applicable over
a wide field of mechanical, electromechanical and electronic equipment and its installation
where a modular design is used.
The objectives of this document are:
– to provide an overview of specifications for enclosures focused on requirements for outdoor
applications for stationary use at non-weather protected locations, and
– to achieve product integrity under outdoor conditions and to ease product selection for the
sourcing of outdoor enclosures from different vendors.
These enclosures are considered to contain any equipment and provide protection for the
outdoor installed facilities against unwanted environmental impacts. The installed equipment
may can be, but is not limited to, subracks or chassis according to IEC 60917-2-2 (all parts) or
IEC 60297-3-101 (all parts). A typical outdoor enclosure is shown in Figure 1.
Figure 1 – Typical outdoor enclosure
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 60050-581, International Electrotechnical Vocabulary (IEV) – Part 581: Electromechanical
components and mechanical structures for electronic equipment
IEC 60068 (all parts), Environmental testing
IEC 60068-2-75, Environmental testing – Part 2-75: Tests – Test Eh: Hammer tests
IEC 60417, Graphical symbols for use on equipment (available at http://www.graphical-
symbols.info/equipment)
IEC 60529, Degrees of protection provided by enclosures (IP code)
IEC 60695-11-10, Fire hazard testing – Part 11-10
...