BS EN 61000-4-23-2001 Electromagnetic compatibility (EMC) Testing and measurement techniques Test methods for protective devices for HEMP and other radiated disturbances《电磁兼容性(EMC).pdf

1、BRITISH STANDARD BS EN 61000-4-23: 2001 IEC 61000-4-23: 2000 Incorporating Corrigendum No. 1 Electromagnetic Compatibility (EMC) Part 4-23: Testing and measurement techniques Test methods for protective devices for HEMP and other radiated disturbances The European Standard EN 61000-4-23:2000 has the

2、 status of a British Standard ICS 33.100.20 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBS EN 61000-4-23:2001 This British Standard, having been prepared under the direction of the Electrotechnical Sector Committee, was published under the authority of the Standards Committ

3、ee and comes into effect on 15 June 2001 BSI 06-2001 ISBN 0 580 37300 2 National foreword This British Standard is the official English language version of EN 61000-4- 23:2000. It is identical with IEC 61000-4-23:2000. The UK participation in its preparation was entrusted by Technical Committee GEL/

4、210, EMC - Policy, to Subcommittee GEL/210/12, EMC - Basic 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 nu

5、mber. For instance, IEC 27-1 has been renumbered as IEC 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 Attention is drawn to the fact that CEN and CENELEC Standards normally include

6、 an annex which lists normative references to international publications with their corresponding European publications. The British Standards which implement these international or European publications may be found in the BSI Standards Catalogue under the section entitled “International Standards

7、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 for their correct application. Compliance with a British Standard do

8、es not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European deve

9、lopments 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 97 and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication

10、 Amd. No. Date Comments 13256 Corrigendum No. 1 June 2001 Correction to title on front coverEUROPEAN STANDARD EN 61000-4-23 NORME EUROPENNE EUROPISCHE NORM December 2000 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komite

11、e fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels 2000 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 61000-4-23:2000 E ICS 33.100.99 English version Electromagnetic compatibility (EMC) Par

12、t 4-23: Testing and measurement techniques - Test methods for protective devices for HEMP and other radiated disturbances (IEC 61000-4-23:2000) Compatibilit lectromagntique (CEM) Partie 4-23: Techniques dessai et de mesure - Mthodes dessai pour les dispositifs de protection pour perturbations IEMN-H

13、A et autres perturbations rayonnes (CEI 61000-4-23:2000) Elektromagnetische Vertrglichkeit (EMV) Teil 4-23: Prf- und Messverfahren - Prfverfahren fr Gerte zum Schutz gegen HEMP und andere gestrahlte Strgrssen (IEC 61000-4-23:2000) This European Standard was approved by CENELEC on 2000-11-01. CENELEC

14、 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 lists and bibliographical references concerning such national standards may be obtained on appl

15、ication to the Central Secretariat 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 Secretar

16、iat has the same status as the official 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 Kin

17、gdom.Foreword The text of document 77C/92/FDIS, future edition 1 of IEC 61000-4-23, 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 61000-4-23 on 2000-11-01. The followin

18、g dates were 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) 2001-08-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2003-11-01 Annexes designated “no

19、rmative“ are 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, B, C, D and E are informative. Annex ZA has been added by CENELEC. _ Endorsement notice The text of the International Standard IEC 61

20、000-4-23:2000 was approved by CENELEC as a European Standard without any modification. _ Page2 EN61000423:2000 BSI 06-2001 CONTENTS Page INTRODUCTION 4 Clause 1 Scope 5 2 Normative references. 5 3 Definitions 6 4 HEMP test concepts12 4.1 Testing of shielding enclosures 13 4.1.1 Buildings16 4.1.2 She

21、lters and rooms 17 4.1.3 Cabinets, racks and boxes .18 4.2 Testing of shielded cables and connectors .20 4.2.1 Testing of cable shields21 4.2.2 Testing of cable connectors23 4.3 Testing of shielding materials.24 4.3.1 Conducting gaskets24 4.3.2 Conducting sheets and screens26 4.3.3 Cut-off waveguide

22、s and honeycombs29 4.4 Test concept summary.31 5 HEMP test procedures 32 5.1 Electromagnetic field testing 32 5.1.1 Pulse field testing.32 5.1.2 CW field testing .36 5.2 Current injection test procedures50 5.2.1 Injection testing of enclosures 50 5.2.2 Transfer impedance and admittance of cable shie

23、lds and connectors .52 5.2.3 Testing of gasket material 52 Annex A (informative) HEMP test concepts for electrical systems55 Annex B (informative) Characterization of shielded cables 63 Annex C (informative) Equipment for HEMP pulse measurements.68 Annex D (informative) Equipment for CW testing 77 A

24、nnex E (informative) Characterization of a planar shield for HEMP protection85 Annex ZA (normative) Normative references to international publications with their corresponding European publications 97 Bibliography 94 Page3 EN61000423:2000 BSI 06-2001 INTRODUCTION IEC 61000 is published in separate p

25、arts according to the following structure: Part 1: General General considerations (introduction, fundamental principles) Definitions, terminology Part 2: Environment Description of the environment Classification of the environment Compatibility levels Part 3: Limits Emission limits Immunity limits (

26、in so far as they do not fall under the responsibility of the product committees) Part 4: Testing and measurement techniques Measurement techniques Testing techniques Part 5: Installation and mitigation guidelines Installation guidelines Mitigation methods and devices Part 6: Generic standards Part

27、9: Miscellaneous Each part is further subdivided into several parts and published either as International Standards or as 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 a secon

28、d number identifying the subdivision (example: 61000-6-1). Page4 EN61000423:2000 BSI 06-2001 ELECTROMAGNETIC COMPATIBILITY (EMC) Part 4-23: Testing and measurement techniques Test methods for protective devices for HEMP and other radiated disturbances 1 Scope This part of IEC 61000 provides the basi

29、c reasons behind HEMP testing and gives a brief description of the most important concepts for shielding element testing. For each test, the following basic information is provided: theoretical foundation of the test (the test concept); test set-up; required equipment; test procedures; data processi

30、ng. This International Standard does not provide information on requirements for specific levels for testing. 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this part of IEC 61000. For dated references, subs

31、equent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this 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 lat

32、est edition of the normative document referred to applies. Members of IEC and ISO maintain registers of currently valid International Standards. IEC 60050(161), International Electrotechnical Vocabulary (IEV) Chapter 161: Electro- magnetic compatibility IEC 60096-1:1986, Radio-frequency cables Part

33、1: General requirements and measuring methods IEC 60625 (all parts), Programmable measuring instruments Interface system (byte serial, bit parallel) IEC 61000-2-9, Electromagnetic compatibility (EMC) Part 2: Environment Section 9: Description of HEMP environment Radiated disturbance. Basic EMC publi

34、cation IEC 61000-5-3, Electromagnetic compatibility (EMC) Part 5-3: Installation and mitigation guidelines HEMP protection concepts. Basic EMC publication ANSI/IEEE Std 488.1:1987, Standard IEEE Standard Digital Interface for Programmable Instrumentation, 02-Feb-1988 Page5 EN61000423:2000 BSI 06-200

35、1 3 Definitions For the purposes of this part of IEC 61000, the following definitions, together with those in IEC 60050(161) apply. 3.1 aperture opening in an electromagnetic barrier (shield) through which EM fields may penetrate 3.2 aperture point-of-entry aperture port-of-entry aperture points-of-

36、entry including intentional or inadvertent holes, cracks, openings or other discontinuities in a shield surface NOTE Intentional aperture points of entry are provided for personnel and/or equipment entry and egress and for ventilation through an electromagnetic barrier. 3.3 attenuation reduction in

37、magnitude (as a result of absorption and scattering) of an electric or magnetic field, a current or a voltage, usually expressed in decibels 3.4 bandwidth 3.4.1 (of a device) width of a frequency band over which a given characteristic of an equipment or transmission channel does not differ from its

38、reference value by more than a specified amount or ratio IEV 161-06-09 3.4.2 (of an emission or signal) width of the frequency band outside which the level of any spectral component does not exceed a specified percentage of a reference level IEV 161-06-10 3.5 bounded wave simulator type of simulator

39、 for producing electromagnetic fields in a localized region of space referred to as a “test volume“ 3.6 box enclosure that contains electrical equipment NOTE Such boxes usually contain modules of subsystems. 3.7 broadband wideband 3.7.1 (of an emission) emission which has a bandwidth greater than th

40、at of a particular measuring apparatus or receiver IEV 161-06-11 Page6 EN61000423:2000 BSI 06-2001 3.7.2 (device) device whose bandwidth is such that it is able to accept and process all the spectral components of a particular emission IEV 161-06-12 3.8 circuit collection of interconnected electroni

41、cs forming one or more closed paths 3.9 conductive point-of-entry conductive port-of-entry penetrating conductor electrical wire or cable or other conductive object, such as a metal rod, which passes through the electromagnetic barrier 3.10 coupling interaction of electromagnetic fields with electri

42、cal systems, whereby part of the energy of the field is transferred to the system 3.11 current injection process, by which through some external means, a current is forced to flow in a circuit at a desired location. For EMP testing purposes, it is a process by which simulated EMP transient current p

43、ulses are introduced into a component, circuit or system to measure damage or upset thresholds 3.12 current injection test CIT test technique using current injection 3.13 cut-off frequency (for a waveguide) lowest frequency for which there is no attenuation of the electromagnetic fields propagating

44、in a lossless waveguide. Below this frequency, the fields attenuate exponentially with distance along the waveguide 3.14 dipole straight antenna, usually fed in the centre, that produces maximum radiation in a plane normal to its principal axis 3.15 direct drive excitation of an electrical system by

45、 directly applying a voltage or current source (either transient or continuous wave) to system cables or surfaces as a means of simulating the effects of transient EM pulses (see current injection) 3.16 direct field penetration penetration of the system shielding by the EM field Page7 EN61000423:200

46、0 BSI 06-2001 3.17 direction of propagation direction of the electromagnetic plane-wave propagation vector k, which is perpendicular to the plane containing the vectors of the electric and the magnetic fields 3.18 electric field strength E magnitude of the electric field vector of an electromagnetic

47、 wave, or of a field created by an electric charge distribution measured in volts per metre 3.19 electromagnetic barrier shield topologically closed surface made to prevent or limit EM fields and conducted transients from entering the enclosed space. The barrier consists of the shield surface and po

48、ints-of-entry treatments, and it encloses the protected volume 3.20 electromagnetic disturbance any electromagnetic phenomenon which may degrade the performance of a device, equipment or system, or adversely affect living or inert matter IEV 161-01-05 3.21 electromagnetic environment totality of ele

49、ctromagnetic phenomena existing at a given location IEV 161-01-01 3.22 electromagnetic pulse (EMP) nuclear electromagnetic pulse (NEMP) all types of electromagnetic fields produced by a nuclear explosion. Also referred to as nuclear electromagnetic pulse (NEMP) 3.23 electromagnetic radiation a) phenomenon by which energy in the form of electromagnetic waves emanates from a source into space b) energy transferred through space in the form of electromagnetic waves