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首页IEC 60068-2-31-2008 环境试验 第2-31部分:试验 试验Ec:粗处理冲击(主要用于设备型试样)
IEC 60068-2-31-2008 环境试验 第2-31部分:试验 试验Ec:粗处理冲击(主要用于设备型试样)
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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 li??des manutentions brutales,essai destin?en premier lieu aux matériels Edition 2.0(环境试验 第2-31部分:试验 试验Ec:粗处理冲击(主要用于设备型试样))
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IEC 60068-2-31
Edition 2.0 2008-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
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
INTERNATIONALE
P
ICS 19.040
PRICE CODE
CODE PRIX
ISBN 2-8318-9794-7
BASIC SAFETY PUBLICATION
PUBLICATION FONDAMENTALE DE S
É
CURIT
É
Copyright International Electrotechnical Commission
Provided by IHS under license with IEC
Not for Resale
--`,,```,,,,````-`-`,,`,,`,`,,`---
– 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
Copyright International Electrotechnical Commission
Provided by IHS under license with IEC
Not for Resale
--`,,```,,,,````-`-`,,`,,`,`,,`---
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
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
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
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with an IEC Publication.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
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.
Copyright International Electrotechnical Commission
Provided by IHS under license with IEC
Not for Resale
--`,,```,,,,````-`-`,,`,,`,`,,`---
– 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.
Copyright International Electrotechnical Commission
Provided by IHS under license with IEC
Not for Resale
--`,,```,,,,````-`-`,,`,,`,`,,`---
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 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.
2 Normative references
The following referenced documents are indispensable for the application 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 60068-2-27, Environmental testing – Part 2-27: Tests – Test Ea and guidance: Shock
IEC 60068-2-55:1987, Environmental testing – Part 2-55: Tests – Test Ee and guidance:
Bounce
IEC Guide 104,The preparation of safety publications and the use of basic safety publications
and group safety publications
ISO 48:2007, Rubber, vulcanized or thermoplastic – Determination of hardness (hardness
between 10 IRHD and 100 IRHD)
Copyright International Electrotechnical Commission
Provided by IHS under license with IEC
Not for Resale
--`,,```,,,,````-`-`,,`,,`,`,,`---
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