IEC_62305-1_2006_General_principles.pdf

iCEI COMITATO ELETTROTECNICO ITALIANO AEIT FEDERAZIONE ITALIANA DI ELETTROTECNICA,ELETTRONICA,AUTOMAZIONE,INFORMATICA E TELECOMUNICAZIONICNRCONSIGLIO NAZIONALE DELLE RICERCHEN O R M A I T A L I A N A C E INorma Italiana CEI EN 62305-1 La seguente Norma identica a:EN 62305-1:2006-02Data Pubblicazione Edizione 2006-04PrimaClassificazione Fascicolo 81-10/18226TitoloProtezione contro i fulminiParte 1:Principi generali TitleProtection against lightning Part 1:General principles IMPIANTI E SICUREZZA DI ESERCIZIO 3I Comitati Nazionali membri del CENELEC sono tenuti,in accordo col regolamento interno del CEN/CENELEC,ad adottare questa Norma Europea,senza alcuna modifica,come Norma Nazionale.Gli elenchi aggiornati e i relativi riferimenti di tali Norme Nazionali possono essere ottenuti rivolgendosi al Segretariato Centrale del CENELEC o agli uffici di qualsiasi Comitato Nazionale membro.La presente Norma Europea esiste in tre versioni ufficiali(inglese,francese,tedesco).Una traduzione effettuata da un altro Paese membro,sotto la sua responsabilit,nella sua lingua nazionale e notificata al CENELEC,ha la medesima validit.I membri del CENELEC sono i Comitati Elettrotecnici Nazionali dei seguenti Paesi:Austria,Belgio,Cipro,Danimarca,Estonia,Finlandia,Francia,Germania,Grecia,Irlanda,Islanda,Italia,Lettonia,Lituania,Lussemburgo,Malta,Norvegia,Olanda,Polonia,Portogallo,Regno Unito,Repubblica Ceca,Slovacchia,Slovenia,Spagna,Svezia,Svizzera e Ungheria.I diritti di riproduzione di questa Norma Europea sono riservati esclusivamente ai membri nazionali del CENELEC.CENELEC 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 application 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 and notified to the CENELEC Central Secretariat has the same status as the official versions.CENELEC members are the national electrotechnical committees of:Austria,Belgium,Cipre,Czech Republic,Denmark,Estonia,Finland,France,Germany,Greece,Hungary,Iceland,Ireland,Italy,Latvia,Lithuanian,Luxembourg,Malta,Netherlands,Norway,Poland,Portugal,Slovakia,Slovenia,Spain,Sweden,Switzerland and United Kingdom.CENELEC Copyright reserved to all CENELEC members.C E N E L E CComitato Europeo di Normalizzazione Elettrotecnica Secrtariat Central Comit Europen deNormalisation Electrotechique European Committee for Electrotechnical Standardization Rue de Strassart 35,B 1050 Bruxelles EuropiKomitee fr Elektrotechnische Normung EN 62305-1Protezione contro i fulminiParte 1:Principi generali Protection against lightningPart 1:General principles Protection contre la foudre Partie 1:Principes gnraux Blitzschutz Teil 1:Allgemeine Grundstze NORMA TECNICA CEI EN 62305-1:2006-04 Pagina ivFOREWORD The text of document 81/262/FDIS,future edition 1 of IEC 62305-1,prepared by IEC TC 81,Lightning protection,was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 62305-1 on 2006-02-01.The following 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)2006-11-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow)2009-02-01 This European Standard makes reference to International Standards.Where the International Standard referred to has been endorsed as a European Standard or a home-grown European Standard exists,this European Standard shall be applied instead.Pertinent information can be found on the CENELEC web site._ ENDORSEMENT NOTICE The text of the International Standard IEC 62305-1:2006 was approved by CENELEC as a European Standard without any modification.NORMA TECNICA CEI EN 62305-1:2006-04 Pagina viii CONTENTSINTRODUCTION.11Scope.32Normative references.33Terms and definitions.34Lightning current parameters.135Damage due to lightning.155.1Damage to a structure.155.2Damage to a service.215.3Types of loss.236Need and economic convenience for lightning protection.276.1Need for lightning protection.276.2Economic convenience of lightning protection.297Protection measures.297.1Protection measures to reduce injury of living beings due to touch and step voltages.297.2Protection measures to reduce physical damage.297.3Protection measures to reduce failure of electrical and electronic systems.317.4Protection measures selection.318Basic criteria for protection of structures and services.318.1Lightning protection levels(LPL).338.2Lightning protection zones(LPZ).418.3Protection of structures.438.4Protection of services.45Annex A(informative)Parameters of lightning current.47Annex B(informative)Time functions of the lightning current for analysis purposes.63Annex C(inform