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IEC 61969-3
Edition 3.0 2020-06
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Mechanical structures for electrical and electronic equipment – Outdoor
enclosures –
Part 3: Environmental requirements, tests and safety aspects
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IEC 61969-3
Edition 3.0 2020-06
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Mechanical structures for electrical and electronic equipment – Outdoor
enclosures –
Part 3: Environmental requirements, tests and safety aspects
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 31.240 ISBN 978-2-8322-8508-4
– 2 – IEC 61969-3:2020 RLV © IEC 2020
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 8
4 Coordination dimensions . 8
5 Environmental requirements, tests and safety aspects – Classification
of environmental conditions . 8
6 Test conditions . 9
6.1 General . 9
6.2 Climatic tests . 9
6.3 Biological tests . 10
6.4 Tests of resistance against chemically active substances . 10
6.5 Tests of resistance against mechanically active substances . 12
7 Mechanical tests . 12
7.1 General . 12
7.2 Dynamic Transport tests . 12
7.3 Lifting and stiffness test . 14
8 Safety aspects . 14
8.1 General . 14
8.2 Locking devices . 15
8.3 Vandalism resistance . 15
8.4 Bullet Firearms resistance (optional) . 15
9 Seismic requirements . 15
10 Electromagnetic shielding performance . 15
11 Thermal management . 15
12 Noise emission . 16
Bibliography . 17
Table 1 – Climatic conditions for environmental classes 1 and 2 . 9
Table 2 – Biological tests . 10
Table 3 – Tests of resistance against chemically active substances . 11
Table 4 – Tests of resistance against mechanically active substances . 12
Table 5 – Vibration and shock test . 13
Table 6 – Safety aspects .
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
MECHANICAL STRUCTURES FOR ELECTRICAL
AND ELECTRONIC EQUIPMENT – OUTDOOR ENCLOSURES –
Part 3: Environmental requirements, tests and safety aspects
FOREWORD
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– 4 – IEC 61969-3:2020 RLV © IEC 2020
International Standard IEC 61969-3 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/721/FDIS 48D/724/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.
This International Standard is to be used in conjunction with IEC 61969-1:2020.
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
IEC 61969-3 Ed.2.0 provides basic environmental test requirements to be used in the absence
of local regulatory or application specific environmental test requirements. This provides
manufacturers and users of generic outdoor enclosure solutions with minimum performance
compliance criteria; thermal solutions pending on the environment an outdoor enclosure is
subjected to.
The products covered by IEC 61969 (all parts) are empty enclosures for outdoor locations, to
be equipped with application-specific combinations of electrical and electronic equipment, and
to be used at non-weather protected locations above ground.
IEC 61969 (all parts) consists of:
– a design guidelines general part (IEC 61969-1);
– a coordination dimensions standard (IEC 61969-2);
– an environmental requirements and tests, safety aspects standard (IEC 61969-3).
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