1、 IEC 60068-2-55 Edition 2.0 2013-02 INTERNATIONAL STANDARD NORME INTERNATIONALE Environmental testing Part 2-55: Tests Test Ee and guidance Loose cargo testing including bounce Essais denvironnement Partie 2-55: Essais Essai Ee et guide Essais de chargement sans arrimage y compris lessai de rebondis
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16、s contactez-nous: csciec.ch. IEC 60068-2-55 Edition 2.0 2013-02 INTERNATIONAL STANDARD NORME INTERNATIONALE Environmental testing Part 2-55: Tests Test Ee and guidance Loose cargo testing including bounce Essais denvironnement Partie 2-55: Essais Essai Ee et guide Essais de chargement sans arrimage
17、y compris lessai de rebondissement INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE R ICS 19.040; 29.020 PRICE CODE CODE PRIX ISBN 978-2-83220-644-7 BASIC SAFETY PUBLICATION PUBLICATION FONDAMENTALE DE SCURIT Registered trademark of the International Electrotechni
18、cal Commission Marque dpose de la Commission Electrotechnique Internationale Warning! Make sure that you obtained this publication from an authorized distributor. Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agr. 2 60068-2-55 IEC:2013 CONTENTS FOREWORD
19、. 3 INTRODUCTION . 5 1 Scope . 6 2 Normative references . 6 3 Terms and definitions . 6 4 Requirements for the test apparatus . 7 4.1 General test description 7 4.2 Characteristics of the testing machine . 7 4.3 Motion of the platform 7 4.4 Tolerances on the horizontal accuracy of platform . 8 4.5 C
20、ontrol 8 4.6 Mounting . 8 4.7 Horizontal motion of specimen. 8 5 Severities . 8 5.1 Severity for sinusoidal motion of the platform 8 5.2 Severity for random motion of the platform 9 5.3 Severity for mixed mode motion of the platform . 9 5.4 Severity for use of special bounce testing machines 9 6 Pre
21、conditioning 9 7 Initial measurements and functional performance test 9 8 Testing . 9 9 Recovery 10 10 Final measurements . 10 11 Information to be given in the relevant specification 11 12 Information to be given in the test report 11 Annex A (normative) Guidance 12 Annex B (informative) Comparison
22、 amongst impact tests . 17 Bibliography 18 Figure A.1 Typical arrangement of barriers and typical reference point positions . 13 Figure A.2 Basic drive motion of a mechanical bounce tester . 14 Table B.1 Comparison of different impact tests 17 60068-2-55 IEC:2013 3 INTERNATIONAL ELECTROTECHNICAL COM
23、MISSION _ ENVIRONMENTAL TESTING Part 2-55: Tests Test Ee and guidance Loose cargo testing including bounce FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). Th
24、e 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 Specif
25、ications (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
26、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 ex
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29、nal 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 itself does
30、not provide any attestation of conformity. Independent certification bodies provide conformity assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any services carried out by independent certification bodies. 6) All users should ensure that they have
31、 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 whatsoe
32、ver, 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 publicati
33、ons 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 Standar
34、d IEC 60068-2-55 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 1987, and constitutes a technical revision. The main changes with respect to the previous edition
35、are listed below: This new edition allows for loose cargo testing in a more general sense. The test is no longer aligned with a special testing machine but allows for use of any suitable equipment such as electrodynamic or servo-hydraulic shaker tables. Moreover, sinusoidal and random vibration can
36、be used. The previous rotation table motions are included in Annex A as historical methods. 4 60068-2-55 IEC:2013 The text of this standard is based on the following documents: FDIS Report on voting 104/592/FDIS 104/598/RVD Full information on the voting for the approval of this standard can be foun
37、d 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. This standard should be used in conjunction with IEC 60068-1. A list of all t
38、he 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 stability date indicated on the IEC web site under “http:/webstore.iec.ch“ in the data rel
39、ated to the specific publication. At this date, the publication will be reconfirmed, withdrawn, replaced by a revised edition, or amended. 60068-2-55 IEC:2013 5 INTRODUCTION This test is applicable to specimens which, during transportation on the load-carrying platform of wheeled vehicles either not
40、 fastened down or with some degree of freedom, may be subjected to dynamic stresses resulting from random shock conditions (bounce). The test may also be used as a simple means of assessing the satisfactory design of a specimen so far as its structural integrity is concerned. NOTE In practice, this
41、test is primarily applicable to equipment-type specimens and packages. Although the test is performed using a vibrating platform, it is not considered as a vibration test, but as an impact test. Vibration tests should be conducted according to the appropriate standards from IEC 60068-2. In Clause 11
42、, specification writers will find a list of details to be considered for inclusion in specifications and, in Annex A, the necessary accompanying guidance. 6 60068-2-55 IEC:2013 ENVIRONMENTAL TESTING Part 2-55: Tests Test Ee and guidance Loose cargo testing including bounce 1 Scope This part of IEC 6
43、0068 provides a standard procedure for determining the ability of a specimen to withstand specified severities of bounce, e. g. when transported as loose cargo on wheeled vehicles. This test is primarily intended for specimens prepared for transportation, including specimens in their transport case
44、when the latter may be considered as part of the specimen itself or packages. This test should not be used as a low-frequency vibration test. Although primarily intended for electrotechnical products, this standard is not restricted to them and may be used in other fields where desired. 2 Normative
45、references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) appli
46、es. IEC 60068-1, Environmental testing Part 1: General and guidance1IEC 60068-2-6, Environmental testing Part 2-6: Tests Test Fc: Vibration (sinusoidal) IEC 60068-2-64, Environmental testing Part 2-64: Tests Test Fh: Vibration, broadband random and guidance IEC 60068-2-80, Environmental testing Part
47、 2-80: Tests Test Fi: Vibration Mixed mode ISO 13355, Packaging Complete, filled transport packages and unit loads Vertical random vibration test ASTM D4169-09, Standard Practice for Performance Testing of Shipping Containers and Systems 3 Terms and definitions For the purposes of this document, the
48、 following terms and definitions apply. 3.1 bounce testing machine testing machine with a vibrating platform driven by rotating shafts and eccentrics Note 1 to entry: Bounce testing machines typically have a fixed displacement amplitude and a variable frequency. _ 1A new edition of IEC 60068-1 is cu
49、rrently under consideration. 60068-2-55 IEC:2013 7 3.2 checkpoint point located on the vibration table Note 1 to entry: For the purpose of this standard, the checkpoints have to be located on the vibration table, regardless of the position of the specimen. 3.3 reference point point, chosen from amongst the checkpoints, whose signal is used to control the test, such that the requirement
