1、BSI Standards PublicationElectrostaticsPart 4-6: Standard test methods for specific applications Wrist strapsBS EN 61340-4-6:2015National forewordThis British Standard is the UK implementation of EN 61340-4-6:2015. It isidentical to IEC 61340-4-6:2015. It supersedes BS IEC 61340-4-6:2010, whichwill
2、be withdrawn on 24 June 2018.The UK participation in its preparation was entrusted to TechnicalCommittee GEL/101, Electrostatics.A list of organizations represented on this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
3、ofa contract. Users are responsible for its correct application. The British Standards Institution 2015.Published by BSI Standards Limited 2015ISBN 978 0 580 79804 7ICS 17.220.99; 29.020Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was publishe
4、d under the authority of theStandards Policy and Strategy Committee on 31 October 2015.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN 61340-4-6:2015EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 61340-4-6 September 2015 ICS 17.220.99; 29.020 English Versi
5、on Electrostatics - Part 4-6: Standard test methods for specific applications - Wrist straps (IEC 61340-4-6:2015) lectrostatique - Partie 4-6: Mthodes dessai normalises pour des applications spcifiques - Bracelets de conduction dissipative (IEC 61340-4-6:2015) Elektrostatik - Teil 4-6: Standard-Prfv
6、erfahren fr spezielle Anwendungen - Handgelenkerdungsbnder (IEC 61340-4-6:2015) This European Standard was approved by CENELEC on 2015-06-24. 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
7、 national standard without any alteration. Up-to-date 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, Germa
8、n). A version in any other language made by translation 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,
9、 Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Sw
10、itzerland, Turkey and the United Kingdom. European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2015 CENELEC All rights of exploitation
11、in any form and by any means reserved worldwide for CENELEC Members. Ref. No. EN 61340-4-6:2015 E BS EN 61340-4-6:2015EN 61340-4-6:2015 2 European foreword The text of document 101/463/FDIS, future edition 2 of IEC 61340-4-6, prepared by IEC/TC 101 “Electrostatics“ was submitted to the IEC-CENELEC p
12、arallel vote and approved by CENELEC as EN 61340-4-6:2015. 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) 2016-03-24 latest date by which the national standards conflict
13、ing with the document have to be withdrawn (dow) 2018-06-24 Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CENELEC and/or CEN shall not be held responsible for identifying any or all such patent rights. Endorsement notice The tex
14、t of the International Standard IEC 61340-4-6:2015 was approved by CENELEC as a European Standard without any modification. In the official version, for Bibliography, the following notes have to be added for the standards indicated: IEC 61340-5-1 NOTE Harmonized as EN 61340-5-1. IEC/TR 61340-5-2 NOT
15、E Harmonized as CLC/TR 61340-5-2. BS EN 61340-4-6:2015 2 IEC 61340-4-6:2015 IEC 2015 CONTENTS FOREWORD . 4 INTRODUCTION . 6 1 Scope 7 2 Terms and definitions 7 3 Testing levels and performance limits 8 4 Test methods . 9 4.1 Test method applications 9 4.2 Wrist strap continuity and resistance test 1
16、0 4.2.1 Purpose of test 10 4.2.2 Equipment . 10 4.2.3 Procedure 11 4.2.4 Reporting . 11 4.3 Band resistance test . 11 4.3.1 Purpose of test 11 4.3.2 Equipment . 11 4.3.3 Procedure (interior resistance) . 12 4.3.4 Procedure (exterior resistance) 12 4.3.5 Reporting . 12 4.4 Band size requirements 12 4
17、.4.1 Purpose of test 12 4.4.2 Equipment . 12 4.4.3 Self-adjusting bands 12 4.4.4 “One-size-fits-all” bands 13 4.5 Breakaway force . 13 4.5.1 Purpose of test 13 4.5.2 Breakaway force measurement 13 4.6 Connection integrity 13 4.6.1 Purpose of test 13 4.6.2 Equipment . 13 4.6.3 Procedure 13 4.6.4 Repo
18、rting . 14 4.7 Ground cord extendibility 14 4.7.1 Purpose of test 14 4.7.2 Ground cord extendibility procedure 14 4.8 Bending life test 14 4.8.1 Purpose of test 14 4.8.2 Equipment . 14 4.8.3 Procedure 15 4.8.4 Reporting . 16 4.9 Manufacturers identification . 16 4.10 Identification of non-standard r
19、esistance value . 16 4.11 Wrist strap resistance . 16 4.11.1 Purpose of test 16 4.11.2 Equipment . 16 4.11.3 Procedure 16 BS EN 61340-4-6:2015IEC 61340-4-6:2015 IEC 2015 3 4.11.4 Reporting . 16 4.12 Wrist strap system continuity test 16 4.12.1 Purpose of test 16 4.12.2 Equipment . 17 4.12.3 Procedur
20、e with ohmmeter 18 4.12.4 Procedure with integrated checker . 18 4.12.5 Reporting . 18 Bibliography 19 Figure 1 Wrist strap resistance test apparatus . 11 Figure 2 Mechanical ground cord flex tester (example) 15 Figure 3 Wrist strap system resistance test 18 Table 1 Evaluation testing 9 Table 2 Acce
21、ptance testing 9 Table 3 Periodic or verification testing . 9 BS EN 61340-4-6:2015 4 IEC 61340-4-6:2015 IEC 2015 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ ELECTROSTATICS Part 4-6: Standard test methods for specific applications Wrist straps FOREWORD 1) The International Electrotechnical Commission
22、 (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 add
23、ition 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 intere
24、sted 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 wit
25、h 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 I
26、EC 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
27、 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
28、any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter. 5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity assessment services and, in some areas, access to IEC marks of confor
29、mity. IEC is not responsible for any services carried out by independent certification bodies. 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 member
30、s 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
31、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
32、 be the subject of patent rights. IEC shall not be held responsible for identifying any or all such patent rights. International Standard IEC 61340-4-6 has been prepared by IEC technical committee 101: Electrostatics. This second edition cancels and replaces the first edition published in 2010. This
33、 edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) editorial comments made during the review of the first edition were reviewed and incorporated where appropriate; b) several changes were made to updat
34、e the Figures and improve the presentation of metric measurements (Imperial measurements have been removed); BS EN 61340-4-6:2015IEC 61340-4-6:2015 IEC 2015 5 c) the option of using an integrated checker for wrist strap system continuity testing has been added; d) the evaluation and acceptance limit
35、 for wrist strap resistance has been changed so as to harmonize with IEC 61340-5-1. The text of this standard is based on the following documents: FDIS Report on voting 101/463/FDIS 101/476/RVD Full information on the voting for the approval of this standard can be found in the report on voting indi
36、cated in the above table. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. A list of all parts in the IEC 61340 series, under the general title Electrostatics, can be found on the IEC website. The committee has decided that the contents of this publication will re
37、main unchanged until the stability date indicated on the IEC website 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. BS EN 61340-4-6:2015 6 IEC 61340-4-6:2015 IEC 2
38、015 INTRODUCTION This part of IEC 61340 has been developed to establish test methods for evaluating the electrical and mechanical attributes of wrist straps used in an electrostatic control program. Wrist straps are intended to connect the user to electrical ground, thus preventing electrostatic cha
39、rge on a users body from attaining a level that may damage ESD susceptible devices or assemblies. Test methods and performance limits for evaluation, acceptance, and functional testing are provided. BS EN 61340-4-6:2015IEC 61340-4-6:2015 IEC 2015 7 ELECTROSTATICS Part 4-6: Standard test methods for
40、specific applications Wrist straps 1 Scope This part of IEC 61340 provides electrical and mechanical test methods and performance limits for evaluation, acceptance and periodic verification testing of wrist straps. NOTE All dimensions are nominal except where indicated. This standard is intended for
41、 testing wrist straps and wrist strap systems used for the grounding of personnel engaged in working with ESD sensitive assemblies and devices. It does not address constant monitoring systems. 2 Terms and definitions For the purposes of this document, the following terms and definitions apply. 2.1 w
42、rist strap assembled device consisting of a band and ground cord that is designed to provide electrical connection from a persons skin to ground 2.2 wrist strap system wrist strap when properly worn by a person, where the electrical path includes the person, the band and the ground cord 2.3 band por
43、tion of the wrist strap worn on the wrist Note 1 to entry: The band maintains electrical contact with a persons skin. 2.4 ground cord portion of the wrist strap that provides flexibility of movement while completing the electrical circuit between the band and ground 2.5 evaluation testing testing of
44、 a wrist strap to determine its electrical and mechanical performance abilities Note 1 to entry: Data are in the form of values from laboratory testing. 2.6 acceptance testing incoming tests to confirm proper marking and electrical functionality Note 1 to entry: Data are in the form of visual inspec
45、tion records and values or pass/fail notation. BS EN 61340-4-6:2015 8 IEC 61340-4-6:2015 IEC 2015 2.7 periodic verification testing end-use testing to confirm electrical functionality Note 1 to entry: Data are in the form of pass/fail notation or resistance values. 2.8 current-limiting resistance re
46、sistance value incorporated in series with the wrist straps electrical path to ground Note 1 to entry: This resistance limits electrical current that could pass through the ground cord in the event of inadvertent user contact with an electrical potential. 2.9 resistance range user-specified upper an
47、d lower resistance values which define the user-acceptable resistance values of a wrist strap or wrist strap system 2.10 strain relief construction feature designed to protect the connections and cord from premature failure 2.11 breakaway force force required to disconnect the ground cord from the b
48、and 3 Testing levels and performance limits This standard specifies different types of testing for wrist straps. Tables 1, 2 and 3 detail the three types of testing with the associated limits and subclause references to test methods. The methods provide appropriate tests for the different levels of
49、wrist strap examination. Evaluation tests are laboratory tests for measuring the performance of a wrist strap or for the comparison of wrist straps. Acceptance tests provide methods for incoming goods inspection. Finally, the periodic verification or functional test is a simple check of electrical continuity. This test shall be used on a regular, user defined basis, to ensure that the wrist strap is electrically functional. Testing shall be carried out under ambient laborator
