IEC 60068-2-31:2008

Environmental testing - Part 2-31: Tests - Test Ec: Rough handling shocks, primarily for equipment-type specimens

IEC 60068-2-31:2008 deals with a test procedure for simulating the effects of rough handling shocks, primarily in equipment-type specimens, the effects of knocks, jolts and falls which may be received during repair work or rough handling in operational use. This procedure does not simulate the effects of impacts received during transportation as loosely constrained cargo. Where the effects of loose cargo transportation are to be assessed, test Ee: Bounce should be used. Also this procedure does not simulate the effects of shock applied to installed equipments. Where this effect is to be assessed refer to test Ea: Shock. Testing should only be specified for equipment likely to receive such rough handling, for example those of small to medium size and mass, and should only be applied to those faces and corners where there is a risk of such treatment being encountered. In general, equipment which is frequently handled and serviced (for example field equipment and unit spares) can be considered at risk, whereas equipment forming an integral part of a permanent installation would not normally be considered at risk and need not be tested. Testing may not be applicable to fragile unprotected equipment of irregular shape (for example aircraft nose radar) which, when removed from the installation would be contained in a handling frame or jig. It may however be applicable to these items of equipment when they are in their transit case or in their handling frame or jig. For equipment which stands only on one face (for example the normal base) the test is generally only applied to that face. Shock tests are performed on the specimen when fixed to the test machine. Drop and topple, free fall, repeated free fall and bounce tests are performed with the specimen free. This second edition cancels and replaces the first edition, published in 1969 and constitutes a technical revision. The major changes with regard to the previous edition concern the introduction of soft packaging tests, where appropriate. This new edition of IEC 60068-2-31 now incorporates the second edition of IEC 60068-2-32 (1975).

Essais d'environnement - Partie 2-31: Essais - Essai Ec: Choc lié à des manutentions brutales, essai destiné en premier lieu aux matériels

La CEI 60068-2-31:2008 consiste en une procédure d'essai pour la simulation des effets de chocs lié à des manutentions brutales, principalement pour les spécimens tels que des matériels, les effets des coups, des heurts et des chutes qui peuvent être reçus au cours de réparations ou de manutentions brutales durant leur fonctionnement. Cette méthode ne simule pas les effets d'impacts reçus pendant le transport sans arrimage. Lorsqu'il est prévu d'évaluer les effets du transport sans arrimage il convient d'utiliser l'essai Ee: de rebondissement. Cette méthode ne simule donc pas les effets de chocs appliqués aux équipements installés. Lorsque il est prevu d'évaluer cet effet, se référer à l'essai Ea de chocs. Il convient que cet essai ne soit normalement spécifié que pour les matériels susceptibles d'être ainsi manipulés, par exemple ceux dont la taille et la masse sont moyennes ou petites, et n'être appliqué qu'aux faces ou coins qui risquent de subir un tel traitement. En général, on peut considérer qu'un matériel qui est fréquemment manipulé et entretenu (par exemple, les matériels de servitude et les unités de rechange) court un tel risque, alors que l'on considérera qu'un matériel qui fait partie intégrante d'une installation fixe ne court normalement pas ce risque et n'a pas besoin d'être soumis à cet essai. Cet essai peut ne pas être applicable aux matériels fragiles et non protégés dont la forme est irrégulière (par exemple un radar frontal d'avion) qui, lorsqu'ils sont retirés de l'installation fixe, sont généralement placés dans un berceau ou un cadre de manutention. Il peut toutefois être applicable à ces matériels lorsqu'ils sont dans leur emballage de transport, ou dans leur berceau ou cadre de manutention. Pour les matériels qui ne tiennent dressés que sur une face (par exemple la base normale), on n'exécute généralement l'essai que sur cette seule face. On exécute les essais de chocs en fixant le spécimen à la machine d'essai. Les essais de chute et culbute, de chute libre, de chutes libres répétées et de rebondissement sont exécutés sur des spécimens non fixés. Cette deuxième édition annule et remplace la première édition, publiée en 1969, et constitue une révision technique. Les modifications principales par rapport à l'édition précédente concernent l'introduction, aux endroits appropriés, des essais sur les emballages. Par ailleurs, la deuxième édition de la CEI 60068-2-32 (1975) a été incorporée dans cette nouvelle édition de la CEI 60068-2-31.

General Information

• Status: Published
• Publication Date: 20-May-2008
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 19.040 - Environmental testing
• Technical Committee: TC 104 - Environmental conditions, classification and methods of test
• Drafting Committee: MT 17 - TC 104/MT 17
• Current Stage: PPUB - Publication issued
• Start Date: 15-Jun-2008
• Completion Date: 21-May-2008

Standards Content (Sample)

IEC 60068-2-31
Edition 2.0 2008-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
BASIC SAFETY PUBLICATION
PUBLICATION FONDAMENTALE DE SÉCURITÉ
Environmental testing –
Part 2-31: Tests – Test Ec: Rough handling shocks, primarily for equipment-type
specimens
Essais d'environnement –
Partie 2-31: Essais – Essai Ec: Choc lié à des manutentions brutales, essai
destiné en premier lieu aux matériels

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IEC 60068-2-31
Edition 2.0 2008-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
BASIC SAFETY PUBLICATION
PUBLICATION FONDAMENTALE DE SÉCURITÉ
Environmental testing –
Part 2-31: Tests – Test Ec: Rough handling shocks, primarily for equipment-type
specimens
Essais d'environnement –
Partie 2-31: Essais – Essai Ec: Choc lié à des manutentions brutales, essai
destiné en premier lieu aux matériels

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
P
CODE PRIX
ICS 19.040 ISBN 2-8318-9794-7
– 2 – 60068-2-31 © IEC:2008
CONTENTS
FOREWORD.3
1 Scope.5
2 Normative references .5
3 General description of test.6
4 Initial measurements .8
5 Testing .8
5.1 Drop and topple.8
5.1.1 Description .8
5.1.2 Test Facility.8
5.1.3 Testing procedures.8
5.2 Free fall – Procedure 1.9
5.2.1 Description .9
5.2.2 Test Facility.9
5.2.3 Test severity.9
5.2.4 Testing procedures.9
5.3 Free fall repeated – Procedure 2 .10
5.3.1 Description .10
5.3.2 Test facility.10
5.3.3 Test severity.10
5.3.4 Testing procedure.10
6 Final measurements .10
7 Information to be included in the relevant specification.11
7.1 Drop and topple test .11
7.2 Free fall and free fall repeated tests .11
8 Information to be given in the test report .11
Annex A (normative) Test apparatus for repeated free fall test – Procedure 2.13
Annex B (informative) Selection of test severities for free fall tests – Guidance .15

Figure 1 – Dropping on to a face.7
Figure 2 – Dropping on to a corner .7
Figure 3 – Topple (or push over).7
Figure A.1 – Rotating (or tumbling) barrel .14

Table 1 – Fall heights versus mass .9
Table B.1 – Examples of typical test severities .16

60068-2-31 © IEC:2008 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ENVIRONMENTAL TESTING –
Part 2-31: Tests –
Test Ec: Rough handling shocks,
primarily for equipment-type specimens

FOREWORD
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patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 60068-2-31 has been prepared by IEC technical committee 104:
Environmental conditions, classification and methods of test.
This second edition cancels and replaces the first edition, published in 1969 and constitutes a
technical revision.
The major changes with regard to the previous edition concern the introduction of soft
packaging tests, where appropriate. This new edition of IEC 60068-2-31 now incorporates the
second edition of IEC 60068-2-32 (1975).
IEC 60068-2-32 will be withdrawn once this standard has been issued.

– 4 – 60068-2-31 © IEC:2008
The text of this standard is based on the following documents:
FDIS Report on voting
104/458/FDIS 104/462/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.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
It has the status of a basic safety publication in accordance with IEC Guide 104.
A list of all the parts in the IEC 60068 series, under the general title Environmental testing,
can be found on the IEC website.
The committee has decided that the contents of this publication will remain unchanged until
the maintenance result 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.
60068-2-31 © IEC:2008 – 5 –
ENVIRONMENTAL TESTING –
Part 2-31: Tests –
Test Ec: Rough handling shocks,
primarily for equipment-type specimens

1 Scope
This part of IEC 60068 deals with a test procedure for simulating the effects of rough handling
shocks, primarily in equipment-type specimens, the effects of knocks, jolts and falls whic
...