IEC_62305_4_2010_10.pdf

IEC 62305-4 Edition 2.0 2010-12 INTERNATIONAL STANDARD Protection against lightning Part 4:Electrical and electronic systems within structures IEC 62305-4:2010(E)THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2010 IEC,Geneva,Switzerland All rights reserved.Unless otherwise specified,no part of this publication may be reproduced or utilized in any form or by any means,electronic or mechanical,including photocopying and microfilm,without permission in writing from either IEC or IECs member National Committee in the country of the requester.If you have any questions about IEC copyright or have an enquiry about obtaining additional rights to this publication,please contact the address below or your local IEC member National Committee for further information.IEC Central Office 3,rue de Varemb CH-1211 Geneva 20 Switzerland Email:inmailiec.ch Web:www.iec.ch About the IEC The International Electrotechnical Commission(IEC)is the leading global organization that prepares and publishes International Standards for all electrical,electronic and related technologies.About IEC publications The technical content of IEC publications is kept under constant review by the IEC.Please make sure that you have the latest edition,a corrigenda or an amendment might have been published.Catalogue of IEC publications:www.iec.ch/searchpub The IEC on-line Catalogue enables you to search by a variety of criteria(reference number,text,technical committee,).It also gives information on projects,withdrawn and replaced publications.IEC Just Published:www.iec.ch/online_news/justpub Stay up to date on all new IEC publications.Just Published details twice a month all new publications released.Available on-line and also by email.Electropedia:www.electropedia.org The worlds leading online dictionary of electronic and electrical terms containing more than 20 000 terms and definitions in English and French,with equivalent terms in additional languages.Also known as the International Electrotechnical Vocabulary online.Customer Service Centre:www.iec.ch/webstore/custserv If you wish to give us your feedback on this publication or need further assistance,please visit the Customer Service Centre FAQ or contact us:Email:csciec.ch Tel.:+41 22 919 02 11 Fax:+41 22 919 03 00 IEC 62305-4 Edition 2.0 2010-12 INTERNATIONAL STANDARD Protection against lightning Part 4:Electrical and electronic systems within structures INTERNATIONAL ELECTROTECHNICAL COMMISSION XC ICS 29.020;91.120.40 PRICE CODEISBN 978-2-88912-283-7 Registered trademark of the International Electrotechnical Commission 2 235 2 O FO晆O嗳;O嗳篊O;ce;2 采te 采efe采ece;3 e采 d deft;嗳e d tllt f P;3;ee采l;3;2 嗳e f P;3 t 采tect 鹥e P;Bc P;2 采t d d;2;ee采l;2;2 采t5te采t 祬te;22;3 Bd et采k;2;Bd 采;28;Bd t te d采祬 f P;2;te采l d de f d cet;2 etc eld d le 采t;3;tl eld;3;2 eld f te采l le;3;3 t f te采l le;3;eld f ete采l le;3;te采l d de f etc eld;3 采dted P嗳 祬te;3 8 lt te采fce;32 P eet;32;ee采l;32 2;P eet l;32 3;ect f P;33;3;ect 采ced采e;3 2;3;ect dcett;3;tece;3 e f采te B f elect采etc e采et elt P;3 e B f采te leett f P f采 et t采ct采e;e f采te elect d tllt f c采dted P嗳 祬te;e 嗳 f采te Fct采 t e cde采ed te elect f P嗳;82 Bl采祬;8 F采e ee采l 采cle f采 te d t dffe采et P;3 F采e 2 le f le P P 采tect e采e;F采e 3 le f采 te采cected P;F采e le f采 eteded lt 采tect 鹥e;2 F采e le f t采ee5del e采t 祬te ct f te d et采k te采cected t te e采t5te采t 祬te;22 F采e eed e采t5te采t 祬te f lt;23 235 2 3 F采e 篊tl鹥t f 采ef采c 采d f t采ct采e f采 e咊tetl d;2 F采e 8 咊tetl d t采ct采e t teel 采ef采ceet;2 F采e te采t f cdcte 采t f te采l 祬te t te d et采k;2 F采e t f te采t etd f cdcte 采t f te采l 祬te t te d et采k;28 F采e;P tt de t lt t采ke;3 F采e;2 lt f te 采e f etc feld 祬 ded cllt;F采e;3 采e le eld lt 祬 etl 采ef采ceet d etl f采e;F采e;le f采 elect采cl d elect采c 祬te de e采 P ;2 F采e;edc dct effect 祬 le 采t d eld e采e;3 F采e;le f P f采 ffce ld;F采e;lt f te etc feld le ce f d采ect lt t采ke;F采e;8 lt f te etc feld le ce f e采祬 lt t采ke;8 F采e;嗳tce s deed 采ll e采e 采d d t采ct采e de;F采e;祬e f 采d5lke l采e le eld;2 F采e;etc feld t采et HX de 采d5lke eld t祬e ;3 F采e;2 etc feld t采et HX de 采d5lke eld t祬e cc采d t e dt;3 F采e;3 5leel tet t elte te etc feld de elded t采ct采e;F采e;lte d c采采et dced t l f采ed 祬 le;F采e B;P de te f采 et t采ct采e;3 F采e B;2 Plte t etl P et t采ct采e;F采e B;3 edct f l 采e elded cle cle t etl lte;F采e B;le f etl lte f采 ddtl eld;F采e B;P采tect f e采l d te采 ete采l e咊et;F采e B;e采et eld 采ded 祬 ded ldde采 d e;2 F采e B;del t f采 le t c采5ect f teel lttce t;2 F采e B;8 篊采d f te P et t采ct采e;F采e;采e lte etee le cdct采 d d 采;F采e 嗳;tllt ele f tet l,l d l P嗳;83 F采e 嗳;2 Bc ele f采 dffe采et 采ce f de t t采ct采e d lt c采采et dt采t t 祬te;8 F采e 嗳;3 Bc ele f lced c采采et dt采t;8 le c采5ect f采 d cet;3 le 2 P eet l f采 e ld d f采 etee ce ct采ct 采 e f ld;33 le;P采ete采 采elet t 采ce f 采 d e咊et;38 le;2 le f采 IX k d w 2 ;8 le;3 etc ttet f 采d5lke tl eld f采 le e;le;ll e采e 采d c采采ed t lt c采采et;le;le f采 IX k d w 2 c采采ed t SF 2,dB;le B;t采ct采l c采cte采tc d 采采d;le B;2 tllt c采cte采tc;le B;3 咊et c采cte采tc;235 2 le B;Ote采 咊et t e cde采ed f采 te 采tect ccet;le 嗳;P采efe采采ed le f I;82 235 2 O O宷 OO PROTECTION AGAINST LIGHTNING Part 4:Electrical and elect