IEC_60068-2-31-2008.pdf

IEC 60068-2-31Edition 2.02008-05INTERNATIONALSTANDARDNORMEINTERNATIONALEEnvironmental testing?Part 2-31:Tests?Test Ec:Rough handling shocks,primarily for equipment-typespecimensEssais denvironnement?Partie 2-31:Essais?Essai Ec:Choc li des manutentions brutales,essaidestin en premier lieu aux matrielsINTERNATIONALELECTROTECHNICALCOMMISSIONCOMMISSIONELECTROTECHNIQUEINTERNATIONALEPICS 19.040PRICE CODECODE PRIXISBN 2-8318-9794-7BASIC SAFETY PUBLICATIONPUBLICATION FONDAMENTALE DE SCURIT?2?60068-2-31 IEC:2008CONTENTSFOREWORD.31Scope.52Normative references.53General description of test.64Initial measurements.85Testing.85.1Drop and topple.85.1.1Description.85.1.2Test Facility.85.1.3Testing procedures.85.2Free fall?Procedure 1.95.2.1Description.95.2.2Test Facility.95.2.3Test severity.95.2.4Testing procedures.95.3Free fall repeated?Procedure 2.105.3.1Description.105.3.2Test facility.105.3.3Test severity.105.3.4Testing procedure.106Final measurements.107Information to be included in the relevant specification.117.1Drop and topple test.117.2Free fall and free fall repeated tests.118Information to be given in the test report.11Annex A(normative)Test apparatus for repeated free fall test?Procedure 2.13Annex B(informative)Selection of test severities for free fall tests?Guidance.15Figure 1?Dropping on to a face.7Figure 2?Dropping on to a corner.7Figure 3?Topple(or push over).7Figure A.1?Rotating(or tumbling)barrel.14Table 1?Fall heights versus mass.9Table 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 specimensFOREWORD1)The International Electrotechnical Commission(IEC)is a worldwide organization for standardization comprisingall national electrotechnical committees(IEC National Committees).The object of IEC is to promoteinternational co-operation on all questions concerning standardization in the electrical and electronic fields.Tothis 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?IECPublication(s)?).Their preparation is entrusted to technical committees;any IEC National Committee interestedin 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 closelywith the International Organization for Standardization(ISO)in accordance with conditions determined byagreement between the two organizations.2)The formal decisions or agreements of IEC on technical matters express,as nearly as possible,an internationalconsensus of opinion on the relevant subjects since each technical committee has representation from allinterested IEC National Committees.3)IEC Publications have the form of recommendations for international use and are accepted by IEC NationalCommittees in that sense.While all reasonable efforts are made to ensure that the technical content of IECPublications is accurate,IEC cannot be held responsible for the way in which they are used or for anymisinterpretation by any end user.4)In order to promote international uniformity,IEC National Committees undertake to apply IEC Publicationstransparently to the maximum extent possible in their national and regional publications.Any divergencebetween any IEC Publication and the corresponding national or regional publication shall be clearly indicated inthe latter.5)IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for anyequipment 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 andmembers of its technical committees and IEC National Committees for any personal injury,property damage orother damage of any nature whatsoever,whether direct or indirect,or for costs(including legal fees)andexpenses arising out of the publication,use of,or reliance upon,this IEC Publication or any other IECPublications.8)Attention is drawn to the Normative references cited in this publication.Use of the referenced publications isindispensable 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 ofpatent 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 atechnical revision.The major changes with regard to the previous edition concern the introduction