SANS 61000-5-3-2008 Electromagnetic compatibility (EMC) Part 5-3 Installation and mitigation guidelines - HEMP protection concepts《电磁兼容性(EMC) 第5-3部分 安装及缓减准则-HEMP保护概念》.pdf

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1、 Collection of SANS standards in electronic format (PDF) 1. Copyright This standard is available to staff members of companies that have subscribed to the complete collection of SANS standards in accordance with a formal copyright agreement. This document may reside on a CENTRAL FILE SERVER or INTRA

2、NET SYSTEM only. Unless specific permission has been granted, this document MAY NOT be sent or given to staff members from other companies or organizations. Doing so would constitute a VIOLATION of SABS copyright rules. 2. Indemnity The South African Bureau of Standards accepts no liability for any

3、damage whatsoever than may result from the use of this material or the information contain therein, irrespective of the cause and quantum thereof. ISBN 978-0-626-21127-1 SANS 61000-5-3:2008Edition 1IEC TR 61000-5-3:1999Edition 1SOUTH AFRICAN NATIONAL STANDARD Electromagnetic compatibility (EMC) Part

4、 5-3: Installation and mitigation guidelines HEMP protection concepts This national standard is the identical implementation of IEC TR 61000-5-3:1999 and is adopted with the permission of the International Electrotechnical Commission. Published by Standards South Africa 1 dr lategan road groenkloof

5、private bag x191 pretoria 0001 tel: 012 428 7911 fax: 012 344 1568 international code + 27 12 www.stansa.co.za Standards South Africa SANS 61000-5-3:2008 Edition 1 IEC 61000-5-3:1999 Edition 1 Table of changes Change No. Date Scope National foreword This South African standard was approved by Nation

6、al Committee StanSA TC 73, Electromagnetic compatibility, in accordance with procedures of Standards South Africa, in compliance with annex 3 of the WTO/TBT agreement. This SANS document was published in February 2008. RAPPORTTECHNIQUECEIIECTECHNICALREPORTTR 61000-5-3Premire ditionFirst edition1999-

7、07Compatibilit lectromagntique (CEM) Partie 5-3:Guides dinstallation et dattnuation Concepts de protection IEMN-HAElectromagnetic compatibility (EMC) Part 5-3:Installation and mitigation guidelines HEMP protection conceptsCommission Electrotechnique InternationaleInternational Electrotechnical Commi

8、ssionPour prix, voir catalogue en vigueurFor price, see current catalogue IEC 1999 Droits de reproduction rservs Copyright - all rights reservedAucune partie de cette publication ne peut tre reproduite niutilise sous quelque forme que ce soit et par aucun procd,lectronique ou mcanique, y compris la

9、photo-copie et lesmicrofilms, sans laccord crit de lditeur.No part of this publication may be reproduced or utilized inany form or by any means, electronic or mechanical,including photocopying and microfilm, without permission inwriting from the publisher.International Electrotechnical Commission 3,

10、 rue de Varemb Geneva, SwitzerlandTelefax: +41 22 919 0300 e-mail: inmailiec.ch IEC web site http:/www.iec.chCODE PRIXPRICE CODEXPUBLICATION FONDAMENTALE EN CEMBASIC EMC PUBLICATIONSANS 61000-5-3:2008This s tandard may only be used and printed by approved subscription and freemailing clients of the

11、SABS .TR 61000-5-3 IEC:1999 3 CONTENTSPageFOREWORD 7INTRODUCTION 9Clause1 Scope 112 Reference documents 113 Definitions 134 General 135 Protection principles. 155.1 General. 155.2 Zoning 155.3 Protection against radiated disturbance . 175.4 Protection against conducted disturbance 175.5 Wiring and i

12、nstallation guidelines 195.5.1 Points of entry. 195.5.2 Wiring concepts 195.5.3 Cables 215.6 Relation between HEMP and lightning protection principles . 215.6.1 HEMP and lightning sources 235.6.2 HEMP and lightning protections . 235.6.3 Discussion on the two types of environment. 256 Component selec

13、tion 276.1 Selection of circuit components . 276.2 Selection of protective devices against radiated disturbance 296.3 Selection of protective devices against conducted disturbance. 296.3.1 General. 296.3.2 Device categories 296.3.3 Protection of typical line interfaces 377 Protection concepts 437.1

14、General considerations . 437.2 Topological considerations 437.3 Definition of protection concepts 457.3.1 Building protection concepts 457.3.2 Protection concepts for shielded enclosures 478 Comparison of protection measures against conducted disturbances due to HEMP andlightning electromagnetic pul

15、se (LEMP) 498.1 General. 498.2 Peak current . 498.3 Maximum di/dt 518.4 Maximum du/dt . 518.5 Integral i dt. 518.6 Integral i2 dt. 518.7 Time to half-value . 538.8 Conclusions on the comparisons between HEMP and LEMP protection 53SANS 61000-5-3:2008This s tandard may only be used and printed by appr

16、oved subscription and freemailing clients of the SABS .TR 61000-5-3 IEC:1999 5 PageAnnex A Early-time HEMP and lightning radiated environments. 55Annex B Arrangement showing the use of a distribution transformer with a primary deltawinding . . 75Annex C Transmission characteristics of protective mea

17、sures 77Figure 1 Example of penetration of radiated and conducted disturbances througha two-barrier protection. 15Figure 2 Voltage and current flowing through a gas arrester during a surge event. 19Figure 3 Concepts for wiring systems. 21Figure 4 Typical protection circuit. 35Figure 5 Solution to pr

18、event surge current from radiating into protected area 53Table 1 Building protection concepts 45Table 2 Protection concepts for shielded enclosures 47Table 3 Lightning and HEMP current waveforms which can be used for tests 49SANS 61000-5-3:2008This s tandard may only be used and printed by approved

19、subscription and freemailing clients of the SABS .TR 61000-5-3 IEC:1999 7 INTERNATIONAL ELECTROTECHNICAL COMMISSION_ELECTROMAGNETIC COMPATIBILITY (EMC) Part 5-3: Installation and mitigation guidelines HEMP protection conceptsFOREWORD1) The IEC (International Electrotechnical Commission) is a worldwi

20、de organization for standardization comprisingall national electrotechnical committees (IEC National Committees). The object of the IEC is to promoteinternational co-operation on all questions concerning standardization in the electrical and electronic fields. Tothis end and in addition to other act

21、ivities, the IEC publishes International Standards. Their preparation isentrusted to technical committees; any IEC National Committee interested in the subject dealt with mayparticipate in this preparatory work. International, governmental and non-governmental organizations liaisingwith the IEC also

22、 participate in this preparation. The IEC collaborates closely with the International Organizationfor Standardization (ISO) in accordance with conditions determined by agreement between the twoorganizations.2) The formal decisions or agreements of the IEC on technical matters express, as nearly as p

23、ossible, aninternational consensus of opinion on the relevant subjects since each technical committee has representationfrom all interested National Committees.3) The documents produced have the form of recommendations for international use and are published in the formof standards, technical report

24、s, technical specifications or guides and they are accepted by the NationalCommittees in that sense.4) In order to promote international unification, IEC National Committees undertake to apply IEC InternationalStandards transparently to the maximum extent possible in their national and regional stan

25、dards. Anydivergence between the IEC Standard and the corresponding national or regional standard shall be clearlyindicated in the latter.5) The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for anyequipment declared to be in conformity with one of its

26、 standards.6) Attention is drawn to the possibility that some of the elements of this technical report may be the subject ofpatent rights. The IEC shall not be held responsible for identifying any or all such patent rights.The main task of IEC technical committees is to prepare International Standar

27、ds. However, atechnical committee may propose the publication of a technical report when it has collecteddata of a different kind from that which is normally published as an International Standard, forexample “state of the art“.Technical reports do not necessarily have to be reviewed until the data

28、they provide areconsidered to be no longer valid or useful by the maintenance team.IEC 61000-5-3, which is a technical report, has been prepared by subcommittee 77C: Immunityto high altitude nuclear electromagnetic pulse (HEMP), of IEC technical committee 77:Electromagnetic compatibility.It has the

29、status of a basic EMC publication in accordance with IEC Guide 107.The text of this technical report is based on the following documents:Enquiry draft Report on voting77C/58/CDV 77C/69/RVCFull information on the voting for the approval of this technical report can be found in the reporton voting ind

30、icated in the above table.This publication has been drafted in accordance with the ISO/IEC directives, Part 3.This document, which is purely informative is not to be regarded as an International Standard.SANS 61000-5-3:2008This s tandard may only be used and printed by approved subscription and free

31、mailing clients of the SABS .TR 61000-5-3 IEC:1999 9 INTRODUCTIONIEC 61000-5 is a part of the IEC 61000 series, according to the following structure:Part 1: GeneralGeneral considerations (introduction, fundamental principles)Definitions, terminologyPart 2: EnvironmentDescription of the environmentCl

32、assification of the environmentCompatibility levelsPart 3: LimitsEmission limitsImmunity limits (in so far as these limits do not fall under the responsibility of the productcommittees)Part 4: Testing and measurement techniquesMeasurement techniquesTesting techniquesPart 5: Installation and mitigati

33、on guidelinesInstallation guidelinesMitigation methods and devicesPart 6: Generic standardsPart 9: MiscellaneousSANS 61000-5-3:2008This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .TR 61000-5-3 IEC:1999 11 ELECTROMAGNETIC COMPATIBILITY (EMC) Pa

34、rt 5-3: Installation and mitigation guidelines HEMP protection concepts1 ScopeThis part of IEC 61000 defines and gives information on protection concepts againstelectromagnetic pulse due to a high altitude nuclear explosion (denoted in what follows by theabbreviation HEMP).The aim of this technical

35、report is to provide elements for the design of an adequate protection for civil facilities against HEMP; the evaluation of already existing protections with respect to stresses imposed by HEMP; the comparison of the requirements of HEMP and lightning protection in order to show ifthey can be combin

36、ed at low cost; an emphasis of the differences between the requirements of HEMP and lightning protectionin order to permit an evaluation of the consequences of HEMP when no additionalmeasures are taken beyond existing lightning protection.2 Reference documentsIEC 60050(161):1990, International Elect

37、rotechnical Vocabulary (IEV) Chapter 161:Electromagnetic compatibilityIEC 60060-2:1994, High voltage test techniques Part 2: Measuring systemsIEC 60099-1:1991, Surge arresters Part 1: Non-linear resistor type gapped arresters for a.c.systemsIEC 61000-2-9:1996, Electromagnetic compatibility (EMC) Par

38、t 2: Environment Section 9:Description of HEMP environment Radiated disturbance. Basic EMC publicationIEC 61000-2-10:1998, Electromagnetic compatibility (EMC) Part 2-10: Environment Description of HEMP environment Conducted disturbance. Basic EMC publicationIEC 61000-2-11, Electromagnetic compatibil

39、ity (EMC) Part 2-11: Environment Descriptionof HEMP environment Classification of HEMP environments 1)IEC 61000-4-5:1995, Electromagnetic compatibility (EMC) Part 4: Testing and measurementtechniques Section 5: Surge immunity test_1)To be published.SANS 61000-5-3:2008This s tandard may only be used

40、and printed by approved subscription and freemailing clients of the SABS .TR 61000-5-3 IEC:1999 13 IEC 61000-4-23, Electromagnetic compatibility (EMC) Part 4-23: Testing and measurementtechniques Test methods for protective devices for HEMP and other radiated disturbance.Basic EMC publication 1)IEC

41、61000-4-24:1997, Electromagnetic compatibility (EMC) Part 4: Testing and measurementtechniques Section 24: Test methods for protective devices for HEMP conducteddisturbances. Basic EMC publication.IEC 61000-4-25, Electromagnetic compatibility (EMC) Part 4-25: Testing and measurementtechniques HEMP r

42、equirements and test methods for equipment and systems. Basic EMCPublication 1)IEC/TR 61000-5-4:1996, Electromagnetic compatibility (EMC) Part 5: Installation andmitigation guidelines Section 4: Immunity to HEMP Specification for protective devicesagainst HEMP radiated disturbance. Basic EMC Publica

43、tionIEC 61000-5-5:1996, Electromagnetic compatibility (EMC) Part 5: Installation and mitigationguidelines Section 5: Specification of protective devices for HEMP conducted disturbance.Basic EMC PublicationIEC 61312-1:1995, Protection against lightning electromagnetic impulse Part 1: Generalprinciple

44、s3 DefinitionsFor the purpose of this technical report, the definitions of IEC 60050(161) together with thefollowing definitions apply.3.1electromagnetic barriertopologically closed surface made to prevent or limit EM fields and conducted transients fromentering the enclosed space. The barrier consi

45、sts of the shield surface and points-of-entrytreatments and encloses the protected volume3.2penetrationtransfer of electromagnetic energy through an electromagnetic barrier from one volume toanother. This can take place in different ways: by diffusion through the barrier, throughapertures and throug

46、h conductors connecting the two volumes (wires, cables, conduits, pipes,ducts, etc.)4 GeneralThe subject of HEMP is covered from an environmental point of view in clause 3 ofIEC 61000-2-9 and IEC 61000-2-10.The discussion of the protection concepts refers to shielding procedures for buildings,equipm

47、ents and connections between them (transmission lines and cables). The term“shielding“ is used here in its more general sense, i.e. cages, cabinets, shielded cables,filtering and surge suppressors._1)To be published.SANS 61000-5-3:2008This s tandard may only be used and printed by approved subscript

48、ion and freemailing clients of the SABS .TR 61000-5-3 IEC:1999 15 5 Protection principles5.1 GeneralThis subclause deals with general protection principles that can be applied to most of theprotection concepts as defined in clause 7.In protected areas (buildings, installations, systems or equipment)

49、, two main sources ofdisturbance direct electromagnetic radiation (radiated disturbance) and conducted pene-tration of voltage and current surges (conducted disturbance) are foreseen (see figure 1).1st barrier(building)2nd barrier(shielding)EquipmentLightning for a lightning current of 25 kA peak value and having a 8/20 s waveshape, the energy isequal to Wt12 J.5.6.3.2.2 Intermediate-time HEMPThe intermediat