BS EN 62305-1-2006 Protection against lightning — Part 1 General principles.pdf
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1、BRITISH STANDARD BS EN 62305-1:2006 Protection against lightning Part 1: General principles The European Standard EN 62305-1:2006 has the status of a British Standard ICS 29.020; 91.120.40 ? BS EN 62305-1:2006 This British Standard was published under the authority of the Standards Policy and Strate
2、gy Committee on 29 September 2006 BSI 2006 ISBN 0 580 48846 2 National foreword This British Standard was published by BSI. It is the UK implementation of EN 62305-1:2006. It is identical with IEC 62305-1:2006. This standard, together with BS EN 62305-2:2006, BS EN 62305-3:2006 and BS EN 62305-4:200
3、6, supersedes BS 6651:1999, which will be withdrawn on 31 August 2008. The UK participation in its preparation was entrusted to Technical Committee GEL/81, Protection against lightning. A list of organizations represented on GEL/81 can be obtained on request to its secretary. This publication does n
4、ot purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard cannot confer immunity from legal obligations. Amendments issued since publication Amd. No. DateComments EUROPEAN STANDARD EN 62305-1 NORME EUROPENN
5、E EUROPISCHE NORM February 2006 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels 2006 CENELEC - All rights of exploitation in any
6、 form and by any means reserved worldwide for CENELEC members. Ref. No. EN 62305-1:2006 E ICS 29.020; 91.120.40 English version Protection against lightning Part 1: General principles (IEC 62305-1:2006) Protection contre la foudre Partie 1: Principes gnraux (CEI 62305-1:2006) Blitzschutz Teil 1: All
7、gemeine Grundstze (IEC 62305-1:2006) This European Standard was approved by CENELEC on 2006-02-01. 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.
8、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 made by translati
9、on 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 electrotechnical committees of Austria, Belgium, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France,
10、 Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Rumania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Foreword The text of document 81/262/FDIS, future edition 1 of IEC 62305-1, prepared by
11、 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 endorse
12、ment (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 Eur
13、opean 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. _ EN 62305-1:2006
14、w w w . b z f x w . c o m CONTENTS 1 Scope 8 2 Normative references .8 3 Terms and definitions .8 4 Lightning current parameters14 5 Damage due to lightning.14 5.1 Damage to a structure .14 5.1.1 Effects of lightning on a structure.14 5.1.2 Sources and types of damage to a structure.16 5.2 Damage to
15、 a service17 5.2.1 Effects of lightning on a service17 5.2.2 Sources and types of damage to a service .17 5.3 Types of loss.18 6 Need and economic convenience for lightning protection 20 6.1 Need for lightning protection20 6.2 Economic convenience of lightning protection21 7 Protection measures.21 7
16、.1 Protection measures to reduce injury of living beings due to touch and step voltages 21 7.2 Protection measures to reduce physical damage21 7.3 Protection measures to reduce failure of electrical and electronic systems .22 7.4 Protection measures selection.22 8 Basic criteria for protection of st
17、ructures and services 22 8.1 Lightning protection levels (LPL)23 8.2 Lightning protection zones (LPZ) .27 8.3 Protection of structures .28 8.3.1 Protection to reduce physical damage and life hazard 28 8.3.2 Protection to reduce the failure of internal systems.28 8.4 Protection of services29 Annex A
18、(informative) Parameters of lightning current30 A.1 Lightning flashes to earth 30 A.2 Lightning current parameters .33 A.3 Fixing the maximum lightning current parameters for LPL I 36 A.3.1 First short stroke and long stroke.36 A.3.2 Subsequent short stroke 37 A.4 Fixing the minimum lightning curren
19、t parameters .37 Annex B (informative) Time functions of the lightning current for analysis purposes38 Annex C (informative) Simulation of the lightning current for test purposes.44 C.1 General.44 C.2 Simulation of the specific energy of the first short stroke and the charge of the long stroke 44 C.
20、3 Simulation of the front current steepness of the short strokes.45 Annex D (informative) Test parameters simulating the effects of lightning on LPS components .48 D.1 General.48 D.2 Current parameters relevant to the point of strike.48 EN 62305-1:2006 3 Introduction7 w w w . b z f x w . c o m D.4 E
21、ffects of lightning current causing possible damage .51 D.4.1 Thermal effects51 D.4.2 Mechanical effects.54 D.4.3 Sparking57 D.5 LPS components, relevant problems and test parameters 57 D.5.1 Air-termination.58 D.5.2 Down conductors .58 D.5.3 Connecting components.59 D.5.4 Earth termination .60 D.6
22、Surge protective device (SPD).61 D.6.1 SPD containing spark gaps 61 D.6.2 SPD containing metal-oxide varistors .61 D.7 Summary of the test parameters to be adopted in testing LPS components 62 Annex E (informative) Surges due to lightning at different installation points.63 E.1 Surges due to flashes
23、 to the structure (source of damage S1)63 E.1.1 Surges flowing through external conductive parts and lines connected to the structure63 E.1.2 Factors influencing the sharing of the lightning current in power lines.65 E.2 Surges relevant to services connected to the structure.65 E.2.1 Surges due to f
24、lashes to services (source of damage S3).65 E.2.2 Surges due to flashes near the services (Source of damage S4).66 E.3 Surges due to induction effects (Source of damage S1 or S2) 66 E.3.1 Surges inside an unshielded LPZ 1 66 E.3.2 Surges inside shielded LPZs66 E.4 General information relating to SPD
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