IEC 61969-3:2011

IEC 61969-3 ®
Edition 2.0 2011-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Mechanical structures for electronic equipment – Outdoor enclosures –
Part 3: Environmental requirements, tests and safety aspects

Structures mécaniques pour équipement électronique – Enveloppes de
plein air –
Partie 3: Exigences environnementales, essais et aspects de la sécurité

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IEC 61969-3 ®
Edition 2.0 2011-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Mechanical structures for electronic equipment – Outdoor enclosures –
Part 3: Environmental requirements, tests and safety aspects

Structures mécaniques pour équipement électronique – Enveloppes de
plein air –
Partie 3: Exigences environnementales, essais et aspects de la sécurité

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX M
ICS 31.240 ISBN 978-2-88912-761-0

– 2 – 61969-3 © IEC:2011
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 Classification of environmental conditions . 7
5 Test conditions . 8
5.1 General . 8
5.2 Climatic tests . 8
5.3 Biological tests . 8
5.4 Tests of resistance against chemically active substances . 9
5.5 Tests of resistance against mechanically active substances . 9
6 Mechanical tests. 9
6.1 General . 9
6.2 Dynamic test . 10
6.3 Lifting and stiffness test . 10
7 Safety aspects . 11
7.1 General . 11
7.2 Locking devices . 11
7.3 Vandalism resistance . 11
7.4 Bullet resistance (optional) . 12
8 Seismic requirements . 12
9 Electromagnetic shielding performance . 12
10 Thermal management . 12
11 Noise emission . 12

Table 1 – Climatic conditions for environmental classes 1 and 2 . 8
Table 2 – Biological tests . 8
Table 3 – Tests of resistance against chemically active substances . 9
Table 4 – Tests of resistance against mechanically active substances . 9
Table 5 – Vibration and shock test . 10
Table 6 – Safety aspects . 11

61969-3 © IEC:2011 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
MECHANICAL STRUCTURES FOR ELECTRONIC EQUIPMENT –
OUTDOOR ENCLOSURES –
Part 3: Environmental requirements, tests and safety aspects

FOREWORD
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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
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International Standard IEC 61969-3 has been prepared by subcommittee 48D: Mechanical
structures for electronic equipment, of IEC technical committee 48: Electromechanical
components and mechanical structures for electronic equipment.
This second edition cancels and replaces the first edition issued in 2001. It constitutes a
technical revision.
The main technical changes with regard to the previous edition are as follows.
Table 1 and Table 6 have been extended with requirements and tests, relevant for outdoor
conditions.
– 4 – 61969-3 © IEC:2011
The text of this standard is based on the following documents:
FDIS Report on voting
48D/483/FDIS 48D/497/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
A list of all parts of IEC 61969 series, under the general title Mechanical structures for
electronic equipment – Outdoor enclosures, can be found on the IEC website.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data
related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
61969-3 © IEC:2011 – 5 –
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
...