1、BRITISH STANDARD 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 status of a British Standard ICs 33.100.20 BS EN 61 000-4-2 3: 2001 IEC
2、 61000-4-23: 2000 Incorporating Corrigendum No. 1 O NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMIITED BY COPYRIGHT LAW BS EN 61000-4-23:2001 Amd. No. This British Standard, having been prepared under the direction of the Electrotechnical Sector Committee, was published under the authority of the
3、 Standards Committee and comes into effect on 15 June 2001 Date Comments National foreword 13256 Corrigendum No. 1 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
4、 Technical Committee GELd210, EMC - Policy, to Subcommittee GEU210/12, EMC - Basic and Generic Standards, which has the responsibility to: June 2001 Correction to title on front cover - - aid enquirers to understand the text; present to the responsible internationalEuropean committee any enquiries o
5、n the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. - A list of organizations represented on this subcommittee can be obtained on request to its secretary. From 1 January 1997, all I
6、EC publications have the number 60000 added to the old number. 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
7、 the fact that CEN and CENELEC Standards normally include 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 Catal
8、ogue 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 for their c
9、orrect application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises front cover, pages 2 to 97 and a back cover. 1 side front cover, the EN title The BSI copyright date displayed in this document indicates when th
10、e document was last issued. O BSI 06-2001 ISBN O 580 37300 2 EUROPEANSTANDARD EN 61000-4-23 NORME EUROPENNE EUROPISCHE NORM December 2000 ICs 33.100.99 English version Electromagnetic compatibility (EMC) Part 4-23: Testing and measurement techniques - Test methods for protective devices for HEMP and
11、 other radiated disturbances (IEC 61 000-4-2312000) Compatibilit lectromagntique (CEM) Elektromagnetische Vertrglichkeit (EMV) Partie 4-23: Techniques dessai et de mesure - Mthodes dessai pour les dispositifs de protection pour perturbations IEMN-HA Strgrssen Teil 4-23: Prf- und Messverfahren - Prfv
12、erfahren fr Gerte zum Schutz gegen HEMP und andere gestrahlte et autres perturbations rayonnes (CE1 61 000-4-23:2000) (IEC 61 000-4-2312000) This European Standard was approved by CENELEC on 2000-1 1-01. CENELEC members are-bound to comply with the CENICENELEC Intemal Regulations which stipulate the
13、 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 Secretariat or to any CENELEC member. This European Standard exists
14、 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 official versions. CENELEC members are the national electro
15、technical committees of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CENELEC European Committee for Electrotechnical Standardization Comit Europen de Nor
16、malisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels O 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 Page 2 EN 61000-4-23:
17、2000 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 2000-1 1-01. The followi
18、ng 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 - latest date by which the national standards conflicting with the EN have to be withdrawn (dop) 2001-08-01 (dow) 2003-1 1-01 Annexes designat
19、ed “normative“ 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 IE
20、C 61000-4-23:2000 was approved by CENELEC as a European Standard without any modification. Page 3 EN 61000-4-23:2000 CONTENTS Page INTRODUCTION 4 Clause 1 2 3 4 O 5 Scope 5 Normative references . 5 Definitions 6 HEMP test concepts 12 4.1 Testing of shielding enclosures 13 4.1.1 Buildings 16 4.1.2 Sh
21、elters and rooms 17 4.1.3 Cabinets, racks and boxes . 18 Testing of shielded cables and connectors . 20 4.2.1 Testing of cable shields 21 4.2.2 Testing of cable connectors 23 Testing of shielding materials . 24 4.3.1 Conducting gaskets 24 4.3.2 Conducting sheets and screens 26 4.3.3 Cut-off waveguid
22、es and honeycombs 29 Test concept summary . 31 Electromagnetic field testing 32 5.1 . 1 Pulse field testing . 32 5.1.2 CW field testing . 36 5.2.1 Injection testing of enclosures 50 5.2.2 5.2.3 Testing of gasket material 52 4.2 4.3 4.4 5.1 HEMP test procedures 32 5.2 Current injection test procedure
23、s . 50 Transfer impedance and admittance of cable shields and connectors . 52 Annex A (informative) HEMP test concepts for electrical systems 55 Annex B (informative) Characterization of shielded cables 63 Annex D (informative) Equipment for CW testing 77 Annex ZA (normative) Normative references to
24、 international publications with their Annex C (informative) Equipment for HEMP pulse measurements . 68 Annex E (informative) Characterization of a planar shield for HEMP protection 85 corresponding European publications 97 Bibliography 94 O BSI 06-2001 Page 4 EN 61000-4-23:2000 INTRODUCTION IEC 610
25、00 is published in separate parts 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 P rt 3: Limits Emis
26、sion limits Immunity limits (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 Pa
27、rt 6: Generic standards Part 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 f
28、ollowed by a dash and a second number identifying the subdivision (example: 61 000-6-1 ). O BSI 06-2001 Page 5 EN 61000-4-23:2000 E LECTRO MAG N ET1 C COM PATI B I LITY (EM C) - Part 4-23: Testing and measurement techniques - Test methods for protective devices for HEMP and other radiated disturbanc
29、es 1 Scope This part of IEC 61000 provides the basic 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
30、-up; - required equipment; - test procedures; - data processing. 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 pro
31、visions 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 this part of IEC 61000 are encouraged to investigate the possibility of applying the most recent editions of the normati
32、ve documents indicated below. For undated references, the latest edition of the normative document referred to applies. Members of IEC and IS0 maintain registers of currently valid International Standards. IEC 60050( 161 ), International Electrotechnical Vocabulary (IEV) - Chapter 161: Electro- magn
33、etic compatibility IEC 60096-1 : 1986, Radio-frequency cables - Part I: General requirements and measuring methods IEC 60625 (all parts), Programmable measuring instruments - Interface system (byte serial, bit parallel) IEC 61 000-2-9, Electromagnetic compatibility (EMC) - Part 2: Environment - Sect
34、ion 9: Description of HEMP environment - Radiated disturbance. Basic EMC publication IEC 61 000-5-3, Electromagnetic compatibility (EMC) - Part 5-3: Installation and mitigation guidelines - HEMP protection concepts. Basic EMC publication ANSIAEEE Std 488.1 : 1987, Standard IEEE Standard Digital Inte
35、rface for Programmable Instrumentation. 02-Feb- 1988 O BSI 06-2001 Page 6 EN 61000-4-23:2000 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 E
36、M fields may penetrate 3.2 a pert u re point -of -entry aperture port-of-entry aperture points-of-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 andlor equipment entr
37、y and egress and for ventilation through an electromagnetic barrier. 3.3 attenuation reduction in 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 o
38、ver which a given characteristic of an equipment or transmission channel does not differ from its 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 sp
39、ecified percentage of a reference level IEV 161-06-10 3.5 bounded wave simulator type of simulator 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 subsys
40、tems. 3.7 broad band wideband 3.7.1 (of an emission) emission which has a bandwidth greater than that of a particular measuring apparatus or receiver IEV 161-06-1 I O BSI 06-2001 Page 7 EN 61000-4-23:2000 3.7.2 (device) device whose bandwidth is such that it is able to accept and process all the spe
41、ctral components of a particular emission IEV 161-06-121 3.8 circuit collection of interconnected electronics 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
42、passes through the electromagnetic barrier 3.10 cou pl ing interaction of electromagnetic fields with electrical systems, whereby part of the energy of the field is transferred to the system 3.1 1 current injection process, by which through some external means, a current is forced to flow in a circu
43、it at a desired location. For EMP testing purposes, it is a process by which simulated EMP transient current pulses 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 3.1 3 cut-off frequency
44、(for a waveguide) lowest frequency for which there is no attenuation of the electromagnetic fields propagating in a lossless waveguide. Below this frequency, the fields attenuate exponentially with distance along the waveguide 0 3.14 dipole straight antenna, usually fed in the centre, that produces
45、maximum radiation in a plane normal to its principal axis 3.15 direct drive excitation of an electrical system by 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
46、injection) 3.16 direct field penetration penetration of the system shielding by the EM field O O BSI 06-2001 Page 8 EN 61000-4-23:2000 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 ele
47、ctric and the magnetic fields 3.18 electric field strength E magnitude of the electric field vector of an electromagnetic 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 lim
48、it EM fields and conducted transients from entering the enclosed space. The barrier consists of the shield surface and points-of-entry treatments, and it encloses the protected volume 3.20 electromagnetic disturbance any electromagnetic phenomenon which may degrade the performance of a device, equip
49、ment or system, or adversely affect living or inert matter IEV 161-01-05 3.21 electromagnetic environment totality of electromagnetic 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 elect rom ag net i c rad at ion a) phenomenon by which energy in the form of electromagnetic waves emanates from a source into space b) energy transferred through space in the
