BS EN 61000-5-7-2001 Electromagnetic compatibility (EMC) - Installation and mitigation guidelines - Installation and mitigation guidelines - Degrees of protection by enclosures agag.pdf

1、BRITISH STANDARD BS EN 61000-5-7:2001 Electromagnetic compatibility Part 5-7: Installation and mitigation guidelines Degrees of protection by enclosures against electromagnetic disturbances (EM code) The European Standard EN 61000-5-7:2001 has the status of a British Standard ICS 23.100.20 NO COPYIN

2、G WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBS EN 61000-5-7:2001 This British Standard, having been prepared under the direction of the Electrotechnical Sector Committee, was published under the authority of the Standards Committee and comes into effect on 15 August 2001 BSI 08-2001

3、 ISBN 0 580 38031 9 National foreword This British Standard is the official English language version of EN 61000-5- 7:2001. It is identical with IEC 61000-5-7:2001. The UK participation in its preparation was entrusted by Technical Committee GEL/210, EMC - Policy, to Subcommittee GEL/210/12, EMC Bas

4、ic and Generic Standards, which has the responsibility to: A list of organizations represented on this Subcommittee can be obtained on request to its secretary. From 1 January 1997, all IEC publications have the number 60000 added to the old number. For instance, IEC 27-1 has been renumbered as IEC

5、60027-1. For a period of time during the change over from one numbering system to the other, publications may contain identifiers from both systems. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Stan

6、dards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible

7、for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests inf

8、ormed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 27 and a back cover. The BSI copyright date displayed in this document indicates when the documen

9、t was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEAN STANDARD EN 61000-5-7 NORME EUROPENNE EUROPISCHE NORM April 2001 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnis

10、che Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels 2001 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. ICS 33.100.01 English version Electromagnetic compatibility (EMC) Part 5-7: Installation and mitigation guideline

11、s - Degrees of protection by enclosures against electromagnetic disturbances (EM code) (IEC 61000-5-7:2001) Compatibilit lectromagntique (CEM) Partie 5-7: Guide dinstallation et dattnuation - Degrs de protection procurs par les enveloppes contre les perturbations lectromagntiques (Code EM) (CEI 6100

12、0-5-7:2001) Elektromagnetische Vertrglichkeit (EMV) Teil 5-7: Installationsrichtlinien und Abhilfemanahmen - Schutzarten durch Gehuse gegen elektromagnetische Strgren (EM-Code) (IEC 61000-5-7:2001) This European Standard was approved by CENELEC on 2001-01-01. CENELEC members are bound to comply with

13、 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 lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretaria

14、t or to any CENELEC member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the Central Secretariat has the same status as the of

15、ficial versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.EN -00016-5:71002 - - 2 Fore

16、word The text of document 77C/96/FDIS, future edition 1 of IEC 61000-5-7, prepared by SC 77C, High power transient phenomena, of IEC TC 77, Electromagnetic compatibility, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 61000-5-7 on 2001-01-01. The following dates wer

17、e fixed: latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2001-11-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2004-01-01 Annexes designated “normative“ ar

18、e part of the body of the standard. Annexes designated “informative“ are given for information only. In this standard, annex ZA is normative and annexes A to D are informative. Annex ZA has been added by CENELEC. _ Endorsement notice The text of the International Standard IEC 61000-5-7:2001 was appr

19、oved 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 60297-1 NOTE: Harmonized as HD 493.1 S1:1988 (not modified). IEC 60297-2 NOTE: Harmonized as HD 493.2 S1:1988 (not modifie

20、d). IEC 60297-3 NOTE: Harmonized as HD 493.3 S1:1988 (not modified). IEC 60297-4 NOTE: Harmonized as EN 60297-4:1995 (not modified). IEC 60917-1 NOTE: Harmonized as EN 60917-1:1998 (not modified). _ Page2 EN6100057:2001 08200161000-5-7 IEC:2001 3 CONTENTS Page INTRODUCTION 4 Clause 1 Scope 5 2 Norma

21、tive references. 6 3 General 6 4 Definitions 7 5 Shielding performance designations 10 6 General test approach.11 7 Testing requirements 12 7.1 Climatic conditions.12 7.2 Test samples .13 7.3 Analysis requirements13 7.4 Test frequency selection 13 7.5 Test matrix definition14 7.6 Test equipment requ

22、irements.14 7.7 Safety requirements.14 7.8 Test plan requirements 15 7.9 Test performance.15 7.10 Test conclusions21 7.11 Test documentation .21 8 Classification 21 Annex A (informative) Some issues for selection of enclosure electromagnetic protection requirements.22 Annex B (informative) Summary o

23、f responsibilities of relevant end-product technical committees .23 Annex C (informative) Other test methods TEM cells and striplines 24 Annex D (informative) Antennas .25 Annex ZA (normative) Normative references to international publications with their corresponding European publications 27 Biblio

24、graphy 26 Figure 1 Shielding effectiveness test set-up for low-frequency range fibre optic 17 Figure 2 Shielding effectiveness test set-up for low-frequency range hardwired (multiple polarisations are to be used as in figure 1).18 Figure 3 Example noise measurement configuration for low-frequency ra

25、nge testing .19 Figure 4 Example calibration test set-up for low-frequency range testing .20 Table 1 EM shielding code designators .10 Table 2 Enclosure shielding effectiveness typical test equipment requirements .14 Page3 EN6100057:2001 08200161000-5-7 IEC:2001 4 INTRODUCTION IEC 61000 is published

26、 in separate parts according to the following structure:Part 1: General General consideration (introduction, fundamental principles) Definitions, terminologyPart 2: Environment Description of the environment Classification of the environment Compatibility levelsPart 3: Limits Emission limits Immunit

27、y limits (in so far as they do not fall under responsibility of the product committees)Part 4: Testing and measurement techniques Measurement techniques Testing techniquesPart 5: Installation and mitigation guidelines Installation guidelines Mitigation methods and devicesPart 6: Generic standardsPar

28、t 9: Miscellaneous Each part is further subdivided into several parts, published either as International Standards, technical specifications or technical reports, some of which have already been published as sections. Others will be published with the part number followed by a dash and completed by

29、a second number identifying the subdivision (example: 61000-6-1). This part of IEC 61000 gives electromagnetic shielding performance markings, and test requirements and procedures related to the electromagnetic shielding performance of empty electrical and electronics equipment enclosures. Page4 EN6

30、100057:2001 08200161000-5-7 IEC:2001 5 ELECTROMAGNETIC COMPATIBILITY (EMC) Part 5-7: Installation and mitigation guidelines Degrees of protection provided by enclosures against electromagnetic disturbances (EM code) 1 Scope This part of IEC 61000 describes performance requirements, test methods and

31、classification procedures for degrees of protection provided by empty enclosures against electromagnetic disturbances for frequencies between 10 kHz and 40 GHz. The shielding performance is to be measured prior to the installation of internal electrical and/or electronic equipment and components. Th

32、is shielding protection is measured for the purpose of demonstrating that the enclosure provides adequate shielding of electromagnetic energy to support acceptable performance of the complete assembled units when tested to applicable IEC standards. However, it should be noted that satisfactory perfo

33、rmance of an empty enclosure does not necessarily ensure that the completed units will pass all EMC performance test standards for the operating equipment (see discussion in annex A). The purpose of this standard is to provide a repeatable means for evaluating the electromagnetic shielding performan

34、ce of empty mechanical enclosures, including cabinets and subracks, and to specify a marking code to allow a manufacturer to select an enclosure with a known capability for attenuating electromagnetic fields. The requirements for immunity to various types of electromagnetic disturbances, including l

35、ightning and high-altitude electro- magnetic pulse (HEMP) will need to be considered by manufacturers when determining the need for application of this standard for specific equipment and applications, and for the specific enclosure shielding requirements which are necessary as a function of frequen

36、cy. The adoption of the classification system in this standard will, whenever possible, promote uniformity in methods of describing the protection against electromagnetic stresses provided by the enclosure. This includes protection of equipment inside the enclosure from external electromagnetic stre

37、sses, as well as protection of external equipment from internally generated electromagnetic stresses. Technical Committees responsible for enclosures may decide on the extent and manner in which the classification defined in this standard is used in their standards and to define “enclosure” as it ap

38、plies to their equipment. However, the tests and performance categories must not differ from those specified in this standard. An informative guide for the details to be specified in relevant enclosure product standards is given in annex B. Page5 EN6100057:2001 08200161000-5-7 IEC:2001 6 2 Normative

39、 references The following normative documents contain provisions which, through reference in this text, constitute provisions of this part of IEC 61000. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on th

40、is part of IEC 61000 are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers of currently valid I

41、nternational Standards. IEC 60050(161): International Electrotechnical Vocabulary (IEV) Chapter 161: Electro- magnetic compatibility IEC 60050(826): International Electrotechnical Vocabulary (IEV) Chapter 826: Electrical installations of buildings IEC 60068-1: Environmental testing Part 1: General a

42、nd guidance IEC 60529: Degrees of protection provided by enclosures (IP Code) IEC 61000-4-3: Electromagnetic compatibility (EMC) Part 4: Testing and measurement techniques Section 3: Radiated, radio-frequency, electromagnetic field immunity test IEC 61000-4-23: Electromagnetic compatibility (EMC) Pa

43、rt 4-23: Testing and measurement techniques Test methods for protective devices for HEMP and other radiated disturbances 3 General Other standards in the IEC series define requirements for construction and immunity testing of electrical and electronic equipment which shall withstand the stresses pro

44、duced by electromagnetic disturbances, including fast electrical transients and electrostatic discharge (ESD). In addition, there are similar requirements for testing to verify immunity to high-altitude electromagnetic pulses (HEMP). There are also existing standards for these enclosures for other e

45、ffects, primarily IEC 60529. However, manufacturers of this electrical and electronic equipment need to either construct or procure enclosures for this equipment prior to the electromagnetic disturbance immunity testing noted in the previous paragraph. With experience the manufacturers will be able

46、to determine the particular levels of electromagnetic shielding effectiveness which are sufficient to permit their finished product to pass the required EMC immunity and emissions tests. Shielding Effectiveness (SE) is a broad term describing the ability of an EM shield to reduce or attenuate extern

47、al (or internally produced) electromagnetic fields and external (or internal) surface currents before they reach the interior (exterior) of the shield. Typically, the shield encloses sensitive electronic equipment that must be protected from exterior electromagnetic disturbances. However, shields ar

48、e also used to reduce electromagnetic fields produced by interior equipment from reaching the exterior of the shield. EM protection is provided by a complete topology, consisting not only of a metallic shell surrounding the shielded volume, but also including proper treatments of required electrical

49、 (power, communication, antenna, signal, Page6 EN6100057:2001 08200161000-5-7 IEC:2001 7 alarms, etc.) and mechanical penetrations (doors, vents, pipes, etc.). Testing of non-linear terminal protection devices for electrical penetrations is beyond the scope of this standard and is addressed in other IEC standards. Equipment manufacturers should coordinate the protection provided by electromagnetic shields and line penetration protection