BS IEC 1000-5-4-1996 Electromagnetic compatibility (EMC) - Installation and mitigation guidelines - Immunity to HEMP - Specifications for protective devices against HEMP radiated d.pdf
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1、BRITISH STANDARD BS IEC 1000-5-4:1996 Implementation of IEC 1000-5-4:1996 Electromagnetic compatibility (EMC) Part 5: Installation and mitigation guidelines Section 4. Immunity to HEMP Specifications for protective devices against HEMP radiated disturbance Basic EMC publication ICS 33.100BSIEC 1000-
2、5-4:1996 This British Standard, having been prepared under the direction of the Electrotechnical Sector Board, was published under the authority of the Standards Board and comes into effect on 15 December 1996 BSI 10-1998 The following BSI references relate to the work on this standard: Committee re
3、ference GEL/210 Draft for comment 92/04372 DC ISBN 0 580 26811 X Committees responsible for this British Standard The preparation of this British Standard was entrusted to Technical Committee GEL/210, Electromagnetic compatibility, upon which the following bodies were represented: Association of Con
4、sulting Scientists Association of Control Manufacturers (TACMA (BEAMA Ltd.) Association of Manufacturers of Domestic Electrical Appliances Association of Manufacturers of Power Generating Systems BEAMA Ltd. BEAMA Metering Association (BMA) British Industrial Truck Association British Lighting Associ
5、ation for the Preparation of Standards (BRITLAPS) British Telecommunications plc Building Automation and Mains Signalling Association (BAMSA) (BEAMA Ltd.) Department of Health Department of Trade and Industry (Standards Policy Unit) Electrical Installation Equipment Manufacturers Association (BEAMA
6、Ltd.) Electricity Association ERA Technology Ltd. Federation of the Electronics Industry GAMBICA (BEAMA Ltd.) Health and Safety Executive Induction and Dielectric Heating Manufacturers Association Institution of Electrical Engineers International Association of Broadcasting Manufacturers Lighting In
7、dustry Federation Ltd. Ministry of Defence Motor Industry Research Association National Air Traffic Services National Physical Laboratory Power Supply Manufacturers Association (PSMA (BEAMA Ltd.) Professional Lighting and Sound Association Radiocommunications Agency Rotating Electrical Machines Asso
8、ciation (BEAMA Ltd.) Society of British Gas Industries Society of Motor Manufacturers and Traders Limited Transmission and Distribution Association (BEAMA Ltd.) Amendments issued since publication Amd. No. Date CommentsBSIEC1000-5-4-1996 BSI 10-1998 i Contents Page Committees responsible Inside fron
9、t cover National foreword ii Foreword iii Text of CEI IEC 1000-5-4 1BSIEC1000-5-4-1996 ii BSI 10-1998 National foreword This British Standard reproduces verbatim IEC 1000-5-4:1996 and implements it as the UK national standard. This British Standard is published under the direction of the Electrotech
10、nical Sector Board whose Technical Committee GEL/210 has the responsibility to: aid enquirers to understand the text; present to the responsible international committee any enquiries on interpretation, or proposals for change, and keep UK interests informed; monitor related international and Europea
11、n developments and promulgate them in the UK. NOTEInternational and European Standards, as well as overseas standards, are available from Customer Services, BSI, 389 Chiswick High Road, London W4 4AL. A British Standard does not purport to include all the necessary provisions of a contract. Users of
12、 British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, theCEI IEC title page, pages 2 to 18 and a ba
13、ck cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on theinside front cover.BSIEC 1000-5-4:1996 ii BSI 10-1998 Contents Page Foreword iii 1 Scope 1 2 Normative reference 1 3 Definitions 1 4 Specificati
14、ons for protective devices against radiated disturbances 2 4.1 General classification for shielding devices 2 4.2 General requirements 2 4.3 Specifications 3 4.3.1 General 3 4.3.2 Barrier materials 3 4.3.3 Shielded cables and conduits 7 4.3.4 Gasketing materials 10 4.3.5 Shielding components 11 Anne
15、x A (informative) General theory 12 Annex B (informative) Bibliography 18 Figure 1 Typical plane wave attenuation for double-wall cages 3 Figure 2 Example of HEMP shielding effectiveness of a Faraday cage 4 Figure 3 Example of attenuation of a cabinet with gaskets 5 Figure 4 Example of magnetic fiel
16、d attenuation function of a viewing window 6 Figure 5 Experimental transfer impedances 8 Figure 6 Example of transfer impedance of a braided-wire shield 9 Figure 7 Example of transfer impedance computed for a tape-wound shield 10 Figure A.1 Theoretical reflection (R db ) for copper and iron 13 Figur
17、e A.2 Theoretical composite reflection (R db ) and absorption (A db ) for copper and iron 14 Figure A.3 Transfer impedance definition 16 Figure A.4 Equivalent circuit describing the effects of the transfer impedance and of the transfer admittance 16 Figure A.5 Variation of the eccentricity function
18、for braided wire shields 17BSIEC1000-5-4:1996 BSI 10-1998 iii Foreword 1) The IEC (International Electrotechnical Commission) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of the IEC is to promote internation
19、al cooperation on all questions concerning standardization in the electrical and electronic fields. To this end and in addition to other activities, the IEC publishes International Standards. Their preparation is entrusted to technical committees; any IEC National Committee interested in the subject
20、 dealt with may participate in this preparatory work. International, governmental and non-governmental organizations liaising with the IEC also participate in this preparation. The IEC collaborates closely with the International Organization for Standardization (ISO) in accordance with conditions de
21、termined by agreement between the two organizations. 2) The formal decisions or agreements of the IEC on technical matters, prepared by technical committees on which all the National Committees having a special interest therein are represented, express, as nearly as possible, an international consen
22、sus of opinion on the subjects dealt with. 3) They have the form of recommendations for international use published in the form of standards, technical reports or guides and they are accepted by the National Committees in that sense. 4) In order to promote international unification, IEC National Com
23、mittees undertake to apply IEC International Standards transparently to the maximum extent possible in their national and regional standards. Any divergence between the IEC Standard and the corresponding national or regional standard shall be clearly indicated in the latter. 5) Attention is drawn to
24、 the possibility that some of the elements of this International Standard may be the subject of patent rights. IEC shall not be held responsible for identifying any or all such patent rights. 6) The IEC has not laid down any procedure concerning marking as an indication of approval and has no respon
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