1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationMechanical structures for electronic equipment Tests for IEC 60917 and IEC 60297Part 2: Seismic tests for cabinets and racksBS EN 61587-2:2011National forewordThis British Standa
2、rd is the UK implementation of EN 61587-2:2011. It isidentical to IEC 61587-2:2011. It supersedes BS EN 61587-2:2001 which iswithdrawn.The UK participation in its preparation was entrusted to Technical CommitteeEPL/48, Electromechanical components and mechanical structures for elec-tronic equipment.
3、A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisions of acontract. Users are responsible for its correct application. BSI 2011ISBN 978 0 580 70192 4ICS 31.240Compliance with a Britis
4、h Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of the StandardsPolicy and Strategy Committee on 30 November 2011.Amendments issued since publicationAmd. No. Date Text affectedBRITISH STANDARDBS EN 61587-2:2011EUROPEAN STANDARD EN 61587
5、-2 NORME EUROPENNE EUROPISCHE NORM October 2011 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Management Centre: Avenue Marnix 17, B - 1000 Brussels 2011 CENELEC - All rights of exploit
6、ation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 61587-2:2011 E ICS 31.240 Supersedes EN 61587-2:2001English version Mechanical structures for electronic equipment - Tests for IEC 60917 and IEC 60297 - Part 2: Seismic tests for cabinets and racks (IEC 61587-2:20
7、11) Structures mcaniques pour quipements lectroniques - Essais pour la CEI 60917 et la CEI 60297 - Partie 2: Essais sismiques pour baies et btis (CEI 61587-2:2011) Mechanische Bauweisen fr elektronische Einrichtungen - Prfungen fr IEC 60917 und IEC 60297 -Teil 2: Seismische Prfungen fr Schrnke und G
8、estelle (IEC 61587-2:2011) This European Standard was approved by CENELEC on 2011-09-29. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date
9、 lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CENELEC member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translati
10、on under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denma
11、rk, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 61587-2:2011EN 61587-2:2011 - 2 - Foreword The text
12、of document 48D/471/FDIS, future edition 2 of IEC 61587-2, prepared by SC 48D, “Mechanical structures for electronic equipment“, of IEC/TC 48, “Electromechanical components and mechanical structures for electronic equipment“ was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as E
13、N 61587-2:2011. The following dates are fixed: latest date by which the document has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2012-06-29 latest date by which the national standards conflicting with the document have to be withdrawn
14、(dow) 2014-09-29 This document supersedes EN 61587-2:2001. EN 61587-2:2011 includes the following significant technical changes with respect to EN 61587-2:2001: EN 61587-2:2001 specified the test condition with one size of the cabinet, and one load distribution. The specified acceleration condition
15、for the test specimen was single-axis and one of the RRS (required response spectra) specified in the standard was selected. The test was aimed to obtain the reference for the structural strength of the enclosure against the specified seismic intensity. Earthquakes are actually random phenomena that
16、 are much more carefully simulated by tri-axial simultaneous operation. The demand of tri-axial excitation has emerged as a more accurate representation of an earthquake. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CENELEC and
17、/or CEN shall not be held responsible for identifying any or all such patent rights. Endorsement notice The text of the International Standard IEC 61587-2:2011 was approved by CENELEC as a European Standard without any modification. BS EN 61587-2:2011- 3 - EN 61587-2:2011 Annex ZA (normative) Normat
18、ive references to international publications with their corresponding European publications 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 do
19、cument (including any amendments) applies. NOTE When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies. Publication Year Title EN/HD Year IEC 60068-2-6 - Environmental testing - Part 2-6: Tests - Test Fc: Vibration (sinusoidal) EN
20、60068-2-6 - IEC 60068-2-47 - Environmental testing - Part 2-47: Tests - Mounting of specimens for vibration, impact and similar dynamic tests EN 60068-2-47 - IEC 60068-2-57 - Environmental testing - Part 2-57: Tests - Test Ff: Vibration - Time-history method EN 60068-2-57 - IEC 60068-3-3 - Environme
21、ntal testing - Part 3: Guidance - Seismic test methods for equipments EN 60068-3-3 - IEC 60297 Series Dimensions of mechanical structures of the 482,6 mm (19 in) series EN 60297 Series IEC 60917 Series Modular order for the development of mechanical structures for electronic equipment practices EN 6
22、0917 Series BS EN 61587-2:2011 2 61587-2 IEC:2011 CONTENTS INTRODUCTION . 5 1 Scope . 6 2 Normative references . 6 3 Terms and definitions . 6 4 Set up of test specimen and measurement items 7 4.1 Introductory remarks . 7 4.2 General . 7 4.3 Set up of the cabinets or racks to the vibration table . 8
23、 4.4 Measurement items . 8 5 Test waveform and acceleration condition 9 5.1 Introductory remarks . 9 5.2 General . 9 5.3 Single-axis acceleration 9 5.4 Triaxial acceleration 10 6 Assessment following the test. 13 Annex A (informative) Vibration generators and information . 14 Figure 1 Cabinets or ra
24、cks configuration for test set up 7 Figure 2 Block diagram of test set up configuration 8 Figure 3 The RRS for test wave (damping ratio 2 %) 10 Figure 4 Time-history of the test wave . 10 Figure 5 The RRS for test wave (damping ratio 3 %) 11 Figure 6 Time-history of test wave for each axis 12 Table
25、1 Load distribution within the cabinet . 8 BS EN 61587-2:201161587-2 IEC:2011 5 INTRODUCTION Edition 1.0 of this standard specified the seismic test for the cabinets or racks according to IEC 60297 and IEC 60917. The specified test applied to the structure of the enclosure and did not apply to the w
26、hole system. Edition 1.0 specified the test condition with one size of the cabinet, and one load distribution. The specified acceleration condition for the test specimen was single-axis and one of the RRS (required response spectra) specified in the standard was selected. The test was aimed to obtai
27、n the reference for the structural strength of the enclosure against the specified seismic intensity. The electronic system consists of two or more subracks. Two or more plug-in units that perform signal processing are installed in each subrack. The size, i.e.: height, width and depth, and the weigh
28、t of each subrack may vary for each electronic system. So, various types of cabinets or racks to equip the electronic system are currently demanded. Therefore, many types of cabinets or racks are required to install the equipment. Earthquakes are actually random phenomena that are much more carefull
29、y simulated by tri-axial simultaneous operation. The demand of tri-axial excitation has emerged as a more accurate representation of an earthquake. Edition 2.0 of this standard has been reviewed in consideration of these demanded conditions. However, it is impossible to perform the seismic test unde
30、r all of the cabinet or rack conditions. The aim of this standard is then to evaluate the reference of the cabinet or rack structure with a common examination method. The seismic test is therefore assumed to be performed on one set of cabinet dimensional conditions (i.e. height, width and depth) and
31、 one set of load distribution conditions in the cabinet. The input acceleration for the test specimen is assumed to be selected and applied either single-axial or tri-axial. Single-axis acceleration was already specified in Edition 1.0 of this standard. Therefore, the RRS (required response spectra)
32、 for tri-axial acceleration have been added. According to this standard, the examination should be performed in the same manner, so as to obtain a reference for the evaluation of the structural strength of the tested cabinet or rack. The user who requests an individual structural cabinet or rack con
33、dition, such as a different cabinet size or a different load distribution in the cabinet, and requests different seismic acceleration intensity, can perform the test by changing the corresponding condition specified in this standard. In this case, the test result is treated as an individual evaluati
34、on, not to be taken as a reference. BS EN 61587-2:2011 6 61587-2 IEC:2011 MECHANICAL STRUCTURES FOR ELECTRONIC EQUIPMENT TESTS FOR IEC 60917 AND IEC 60297 Part 2: Seismic tests for cabinets and racks 1 Scope This part of IEC 61587 specifies seismic tests for cabinets and racks accommodated with IEC
35、60917 and 60297 series. It applies, in whole or in part, only to the mechanical structures of cabinets and racks for electronic equipment according to the above cited series of standards, while it does not apply to the electronic equipment or systems deemed to be installed within these mechanical st
36、ructures. This standard does not apply either to a cabinet or a rack having an anti-seismic isolation structure, either external or internal. This standard aims to provide test conditions and criteria that constitute a reference to evaluate the ability of the mechanical structure of the cabinets or
37、racks to acceptably withstand specified seismic intensities. For this purpose, this standard specifies test specimen conditions, such as dimensions (i.e. height, width and depth) of the cabinet and the rack, load distribution, structural test condition and the RRS (required response spectra) of sing
38、le-axis or tri-axis acceleration as the seismic test wave condition. The single-axis or tri-axis acceleration is selectable. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For und
39、ated references, the latest edition of the referenced document (including any amendments) applies. IEC 60068-2-6: Environmental testing Part 2-6: Tests Test Fc: Vibration (sinusoidal) IEC 60068-2-47: Environmental testing Part 2-47: Tests Mounting of specimens for vibration, impact and similar dynam
40、ic tests IEC 60068-2-57: Environmental testing Part 2-57: Tests Test Ff: Vibration Time-history method IEC 60068-3-3: Environmental testing Part 3: Guidance Seismic test methods for equipments IEC 60297 (all parts): Mechanical structures for electronic equipment Dimensions of mechanical structures o
41、f the 482,6 mm (19 in) series IEC 60917, (all parts): Modular order for the development of mechanical structures for electronic equipment practices 3 Terms and definitions For the purposes of this document, the terms and definitions given in IEC 60068-2-6, IEC 60068-3-3, IEC 60068-2-47 and IEC 60068
42、-2-57 apply. BS EN 61587-2:201161587-2 IEC:2011 7 4 Set up of test specimen and measurement items 4.1 Introductory remarks The seismic test of the cabinets or the racks shall be performed under loaded condition. 4.2 General The cabinets or racks under the test shall be loaded in a distributed manner
43、 throughout the height of the cabinets or racks with dummy plug-in units similar to a practical subrack application. The cabinets or racks to be tested shall be loaded as shown in Figure 1 and Table 1. This is the condition to be taken as reference. Cabinets or racks equipped with front/rear doors,
44、and/or side panels may gain structural contribution from their installation. The test report shall state whether the tested cabinets or racks were tested with or without doors and panels. Cabinets or racks to be deployed in the field by the user without doors and/or side panels will require cabinets
45、 or racks to be tested without doors and/or side panels. 600 Y X Z Dummy load M4 To be attached to the bottom Dummy load M5 D = 600 max. To be attached to the front and rear verticals 600 2 000 400 5 x A 100 300 A D Dummy load M3 IEC 1777/11 Dimensions in millimetres Figure 1 Cabinets or racks confi
46、guration for test set up BS EN 61587-2:2011 8 61587-2 IEC:2011 Table 1 Load distribution within the cabinet Cabinets according A (mm) M3 (kg) M4 (kg) M5 (kg) Total load (kg) IEC 60297-3-100 265,9 25 4 positions 90 60 250 IEC 60917-2-1 250 25 4 positions 90 60 250 4.3 Set up of the cabinets or racks
47、to the vibration table Mounting condition is referred to IEC 60068-2-6, in which there is reference to IEC 60068-2-47. The loaded cabinets or racks for the test may be mounted to the vibration table without using interfaces such as concrete anchors, however the securing of the cabinet/rack to vibrat
48、ion table shall use similar size and number of hold-down devices in accordance with the intended bolt-down positions of field installed units. If a specific cabinet mounting condition is required, the test should be performed with agreement between user and manufacture. If there are several bolt-dow
49、n patterns for fixing the cabinets or racks to the vibration table, the test shall be performed under the worst bolt-down condition, that is, the largest stress works to the bolts. For the block diagram of the test set-up configuration, see Figure 2. Waveform generator and controller Motor and actuator Acceleration monitor Vibration table Displacement transducer Cabinet or rack IEC 1778/11 Figure 2 Block diagram of test set up configuration 4.4 Measurement items These item
