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BS EN 60068-2-27:2009

Current
Current

The latest, up-to-date edition.

Environmental testing Tests. Test Ea and guidance. Shock
Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

31-07-2009

FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Terms and definitions
4 Description of test apparatus
   4.1 Required characteristics
   4.2 Measuring system
   4.3 Mounting
5 Severities
6 Preconditioning
7 Initial measurements and functional performance test
8 Testing
9 Recovery
10 Final measurements
11 Information to be given in the relevant specification
12 Information to be given in the test report
Annex A (normative) - Selection and application of pulse
        shapes - Guidance
Annex B (informative) - Shock response spectra and other
        characteristics of pulse shapes
Annex C (informative) - Comparison between impact tests
Bibliography
Annex ZA (normative) - Normative references to international
         publications with their corresponding European
         publications

Describes a standard procedure for determining the ability of a specimen to withstand specified severities of non-repetitive or repetitive shocks.

IEC 60068-2-27:2008 provides a standard procedure for determining the ability of a specimen to withstand specified severities of non-repetitive or repetitive shocks. The purpose of this test is to reveal mechanical weakness and/or degradation in specified performances, or accumulated damage or degradation caused by shocks. In conjunction with the relevant specification, this may be used in some cases to determine the structural integrity of specimens or as a means of quality control. This test is primarily intended for unpackaged specimens and for items in their transport case when the latter may be considered to be part of the specimen. If an item is to be tested unpackaged, it is referred to as a test specimen. However, if the item is packaged, then the item itself is referred to as a product and the item and its packaging together are referred to as a test specimen. When used in conjunction with IEC 60068-2-47, this standard may be used for testing packaged products. This possibility was included in the 2005 version of IEC 60068-2-47 for the first time. This standard is written in terms of prescribed pulse shapes. Guidance for the selection and application of these pulses is given in Annex A and the characteristics of the different pulse shapes are discussed in Annex B. Wherever possible, the test severity and the shape of the shock pulse applied to the specimen should be such as to reproduce the effects of the actual transport or operational environment to which the specimen will be subjected, or to satisfy the design requirements if the object of the test is to assess structural integrity (see Clauses A.2 and A.4). For the purposes of this test, the specimen is always mounted to the fixture or the table of the shock testing machine during testing. The major changes with regard to the previous edition concern:
- the merging of IEC 60068-2-29 into this edition of IEC 60068-2-27; Part 2-29 will be withdrawn as soon as this edition is published;
- the introduction of soft packaged specimens as defined in the IEC ad hoc working group document agreed in Stockholm:2000.
It has the status of a horizontal standard in accordance with IEC Guide 104.

Committee
GEL/104
DevelopmentNote
Renumbers and supersedes BS 2011-2.1EA(1988) Supersedes 83/27946 DC & BS 2011-2.1EA(1977). 1993 version incorporates amendment 7814 to BS 2011-2.1EA(1988). (09/2005) Supersedes BS EN 60068-2-29 & 05/30138371 DC. (07/2009)
DocumentType
Standard
Pages
44
PublisherName
British Standards Institution
Status
Current
Supersedes

Standards Relationship
I.S. EN 60068-2-27:2009 Identical
EN 60068-2-27:2009 Identical
DIN EN 60068-2-27 : 1995 Identical
IEC 60068-2-27:2008 Identical
SN EN 60068-2-27 : 1993 Identical
UNE-EN 60068-2-27:2011 Identical

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EN 60721-3-1:1997 Classification of environmental conditions - Part 3: Classification of groups of environmental parameters and their severities - Section 1: Storage
IEC 60068-1:2013 Environmental testing - Part 1: General and guidance
IEC 60068-2-81:2003 Environmental testing - Part 2-81: Tests - Test Ei: Shock - Shock response spectrum synthesis
EN 60068-1:2014 Environmental testing - Part 1: General and guidance
EN 60721-3-5:1997 Classification of environmental conditions - Part 3: Classification of groups of environmental parameters and their severities - Section 5: Ground vehicle installations
IEC 60721-3-5:1997 Classification of environmental conditions - Part 3: Classificationof groups of environmental parameters and their severities -Section 5: Ground vehicle installations
IEC 60068-2-31:2008 Environmental testing - Part 2-31: Tests - Test Ec: Rough handling shocks, primarily for equipment-type specimens
ISO 2041:2009 Mechanical vibration, shock and condition monitoring Vocabulary
IEC 60068-2-47:2005 Environmental testing - Part 2-47: Test - Mounting of specimens for vibration, impact and similar dynamic tests
EN 60068-2-55:2013 Environmental testing - Part 2-55: Tests - Test Ee and guidance - Loose cargo testing including bounce
IEC GUIDE 104:2010 The preparation of safety publications and the use of basic safety publications and group safety publications
ISO 8568:2007 Mechanical shock Testing machines Characteristics and performance
IEC 60068-2-55:2013 Environmental testing - Part 2-55: Tests - Test Ee and guidance - Loose cargo testing including bounce
EN 60068-2-81:2003 Environmental testing - Part 2-81: Tests - Test Ei: Shock - Shock response spectrum synthesis
IEC 60721-3-1:1997 Classification of environmental conditions - Part 3 Classification of groups of environmental parameters and their severities - Section 1: Storage
EN 60068-2-31:2008 ENVIRONMENTAL TESTING - PART 2-31: TESTS - TEST EC: ROUGH HANDLING SHOCKS, PRIMARILY FOR EQUIPMENT-TYPE SPECIMENS
EN 60068-2-47:2005 Environmental testing - Part 2-47: Tests - Mounting of specimens for vibration, impact and similar dynamic tests

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