1、Protection against lightning Part 4: Electrical and electronic systems within structures (IEC 62305-4:2010) BS EN 62305-4:2011 Incorporating corrigendum November 2016 BSI Standards Publication WB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06BS EN 62305-4:2011 BRITISH STANDARD National forewo
2、rd This British Standard is the UK implementation of EN 62305-4:2011, The UK participation in its preparation was entrusted to Technical Committee GEL/81, Protection against lightning. A list of organizations represented on this committee can be obtained on request to its secretary. This publication
3、 does not 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. This British Standard was published under the authority of the Standards Policy and Strategy C
4、ommittee on 30 June 2011. Amendments/corrigenda issued since publication Date Text affected incorporating corrigendum November 2016. It is identical to ISBN 978 0 580 96707 8 ICS 29.020, 91.120.40 The British Standards Institution 2016. Published by BSI Standards Limited 2016 IEC 62305-4:2010. It su
5、persedes BS EN 62305-4:2006, which is withdrawn. 31 December 2016 Implementation of CENELEC corrigendum November 2016: Title on CENELEC cover page corrected and Annex ZA updatedEUROPEAN STANDARD EN 62305-4 NORME EUROPENNE EUROPISCHE NORM February 2011 CENELEC European Committee for Electrotechnical
6、Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Management Centre: Avenue Marnix 17, B - 1000 Brussels 2011 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 62305-4:2
7、011 E ICS 29.020; 91.120.40 English version Protection against lightning - Part 4: Electrical and electronic systems within structures (IEC 62305-4:2010) Protection contre la foudre - Partie 4: Rseaux de puissance et de communication dans les structures (CEI 62305-4:2010) Blitzschutz - Teil 4: Elekt
8、rische und elektronische Systeme in baulichen Anlagen (IEC 62305-4:2010) This European Standard was approved by CENELEC on 2011-01-13. 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 nation
9、al 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
10、any other language made by translation 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, Bulgaria, Croatia, Cyprus,
11、 the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Incorporating corrigendum Novemb
12、er 2016Foreword The text of document 81/373/FDIS, future edition 2 of IEC 62305-4, prepared by IEC TC 81, Lightning protection, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 62305-4 on 2011-01-13. This European Standard supersedes EN 62305-4:2006 + corr. Nov.2006.
13、This EN 62305-4:2011 includes the following significant technical changes with respect to EN 62305-4:2006 + corr. Nov.2006: 1) Isolating interfaces capable of reducing conducted surges on lines entering the structure are introduced. 2) Minimum cross-sections for bonding components are slightly modif
14、ied. 3) First negative impulse current is introduced for calculation purposes as electromagnetic source of harm to the internal systems. 4) Selection of SPD with regard to voltage protection level is improved to take into account oscillation and induction phenomena in the circuit downstream of SPD.
15、5) Annex C dealing with SPD coordination is withdrawn and referred back to SC 37A. 6) A new informative Annex D is introduced giving information on factors to be considered in the selection of SPDs. Attention is drawn to the possibility that some of the elements of this document may be the subject o
16、f patent rights. CEN and CENELEC shall not be held responsible for identifying any or all such patent rights. 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) 2011-10-13 latest
17、 date by which the national standards conflicting with the EN have to be withdrawn (dow) 2014-01-13 Annex ZA has been added by CENELEC. _ Endorsement notice The text of the International Standard IEC 62305-4:2010 was approved by CENELEC as a European Standard without any modification. In the officia
18、l version, for Bibliography, the following notes have to be added for the standards indicated: 2 IEC 61000 series NOTE Harmonized in EN 61000 series (partially modified). 8 IEC 61643-11 NOTE Harmonized as EN 61643-11. _ BS EN 62305-4:2011 EN 62305-4:2011 2 Annex ZA (normative) Normative references t
19、o international publications with their corresponding European publications The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (includin
20、g any amendments) applies. NOTE When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies. Publication Year Title EN/HD Year IEC 60364-5-53 2001 Electrical installations of buildings - Part 5-53: Selection and erection of electrical e
21、quipment - Isolation, switching and control - - IEC 60664-1 2007 Insulation coordination for equipment within low-voltage systems - Part 1: Principles, requirements and tests EN 60664-1 2007 IEC 61000-4-5 2005 Electromagnetic compatibility (EMC) - Part 4-5: Testing and measurement techniques - Surge
22、 immunity test EN 61000-4-5 2006 IEC 61000-4-9 1993 Electromagnetic compatibility (EMC) - Part 4-9: Testing and measurement techniques - Pulse magnetic field immunity test EN 61000-4-9 1993 IEC 61000-4-10 1993 Electromagnetic compatibility (EMC) - Part 4-10: Testing and measurement techniques - Damp
23、ed oscillatory magnetic field immunity test EN 61000-4-10 1993 IEC 61643-1 2005 Low-voltage surge protective devices - Part 1: Surge protective devices connected to low-voltage power distribution systems - Requirements and tests - IEC 61643-12 (mod) 2008 Low-voltage surge protective devices - Part 1
24、2: Surge protective devices connected to low-voltage power distribution systems - Selection and application principles CLC/TS 61643-12 2009 IEC 61643-21 - Low voltage surge protective devices - Part 21: Surge protective devices connected to telecommunications and signalling networks - Performance re
25、quirements and testing methods EN 61643-21 - IEC 61643-22 (mod) - Low-voltage surge protective devices - Part 22: Surge protective devices connected to telecommunications and signalling networks - Selection and application principles CLC/TS 61643-22 - IEC 62305-1 2010 Protection against lightning -
26、Part 1: General principles EN 62305-1 2011 IEC 62305-2 2010 Protection against lightning - Part 2: Risk management EN 62305-2 2011 EN 61643-11:2002 +A11:2007 BS EN 62305-4:2011 EN 62305-4:2011 3 Publication Year Title EN/HD Year IEC 62305-3 2010 Protection against lightning - Part 3: Physical damage
27、 to structures and life hazard EN 62305-3 2011 BS EN 62305-4:2011 EN 62305-4:2011 4 C O N T E N T S FOR E WORD 8 INTRODUCTION 10 1 Sc o p e . . 12 2 Normative references 12 3 Terms and definitions. . 13 4 Design and installation of SPM. 16 4 . 1 General . 16 4 . 2 Design of SPM . 19 4 . 3 Lightning
28、protection zones (LPZ) . 20 4 . 4 Basic SPM 23 5 Earthing and bonding 24 5 . 1 General . 24 5 . 2 Earth-termination system 25 5 . 3 Bonding network 27 5 . 4 Bonding bars . 31 5 . 5 Bonding at the boundary of an LPZ 32 5 . 6 Material and dimensions of bonding components . 32 6 Magnetic shielding and
29、line routing. 33 6 . 1 Spatial shielding 33 6 . 2 Shielding of internal lines 33 6 . 3 Routing of internal lines 33 6 . 4 Shielding of external lines . 34 6 . 5 Material and dimensions of magnetic shields 34 7 Coordinated SPD system. 34 8 Isolating interfaces . 35 9 SPM management 35 9 . 1 General .
30、 35 9 . 2 SPM management plan . 35 9 . 3 Inspection of SPM 36 9 . 3 . 1 Inspection procedure . 37 9 . 3 . 2 Inspection documentation 37 9 . 4 Maintenance 38 Annex A (informative) Basis of electromagnetic environment evaluation in an LPZ . 39 Annex B (informative) Implementation of SPM for an existin
31、g structure . 63 Annex C (informative) Selection and installation of a coordinated SPD system. 79 Annex D (informative) Factors to be considered in the selection of SPDs 85 Bibliog raphy . 90 Figure 1 General principle for the division into different LPZ . 16 Figure 2 Examples of possible SPM (LEMP
32、protection measures) . 18 Figure 3 Examples for interconnected LPZ . 22 Figure 4 Examples for extended lightning protection zones 23 Figure 5 Example of a three-dimensional earthing system consisting of the bonding network interconnected with the earth-termination system 25 Figure 6 Meshed earth-ter
33、mination system of a plant . 26 BS EN 62305-4:2011 IEC 62305-4:2010 5 Figure 7 Utilization of reinforcing rods of a structure for equipotential bonding . 28 Figure 8 Equipotential bonding in a structure with steel reinforcement . 29 Figure 9 Integration of conductive parts of internal systems into t
34、he bonding network . 30 F i g u r e 1 0 C o m b in a t i o n s o f i n t e g r a t i o n m e t h o d s o f c o n d u c t i ve p a r t s o f i n t e r n a l systems into the bonding network 31 Figure A.1 LEMP situation due to lightning strike 40 Figure A.2 Simulation of the rise of magnetic field by
35、damped oscillations . 43 Figure A.3 Large volume shield built by metal reinforcement and metal frames 44 Figure A.4 Volume for electrical and electronic systems inside an inner LPZ n . 45 Figure A.5 Reducing induction effects by line routing and shielding measures. . 46 Figure A.6 Example of SPM for
36、 an office building 48 Figure A.7 Evaluation of the magnetic field values in case of a direct lightning strike 49 Figure A.8 Evaluation of the magnetic field values in case of a nearby lightning strike 51 Figure A.9 Distance s adepending on rolling sphere radius and structure dimensions . 53 Figure
37、A.10 Types of grid-like large volume shields . 55 F i g u r e A . 1 1 M a g n e t i c f i e l d s t r e n g t hH 1 / M A Xinside a grid-like shield type 1 . 56 F i g u r e A . 1 2 M a g n e t i c f i e l d s t r e n g t hH 1 / M A Xinside a grid-like shield type 1 according to mesh width. 56 Figure
38、A.13 Low-level test to evaluate the magnetic field inside a shielded structure 58 Figure A.14 Voltages and currents induced into a loop formed by lines. . 59 Figure B.1 SPM design steps for an existing structure . 66 Figure B.2 Possibilities to establish LPZs in existing structures 70 Figure B.3 Red
39、uction of loop area using shielded cables close to a metal plate 72 Figure B.4 Example of a metal plate for additional shielding . 73 Figure B.5 Protection of aerials and other external equipment 74 Figure B.6 Inherent shielding provided by bonded ladders and pipes. 75 Figure B.7 Ideal positions for
40、 lines on a mast (cross-section of steel lattice mast) 75 Figure B.8 Upgrading of the SPM in existing structures 77 Figure C.1 Surge voltage between live conductor and bonding bar. . 82 Figure D.1 Installation example of test Class I, Class II and Class III SPDs . 86 Figure D.2 Basic example for dif
41、ferent sources of damage to a structure and lightning current distribution within a system. 87 Figure D.3 Basic example of balanced current distribution . 88 Table 1 Minimum cross-sections for bonding components 33 T a b le 2 S P M ma n a g e m e n t p la n f o r n e w b u i ld in g s a n d f o r e
42、x t e n s i ve c h a n g e s in construction or use of buildings. . 36 Table A.1 Parameters relevant to source of harm and equipment 41 T a b le A . 2 E x a mp l e s f o r I 0 / M A X= 100 kA and w m= 2 m 51 Table A.3 Magnetic attenuation of grid-like spatial shields for a plane wave . 52 Table A.4
43、Rolling sphere radius corresponding to maximum lightning current . 54 T a b le A . 5 E x a mp l e s f o r I 0 / M A X= 100 kA and w m= 2 m corresponding to SF = 12,6 dB . 54 Table B.1 Structural characteristics and surroundings . 63 Table B.2 Installation characteristics. . 64 Table B.3 Equipment ch
44、aracteristics 64 BS EN 62305-4:2011 IEC 62305-4:2010 6 Table B.4 Other questions to be considered for the protection concept 64 Table D.1 Preferred values of I i m p. 85 BS EN 62305-4:2011 IEC 62305-4:2010 7 I N T E R N A T I O N A L E L E C T R O T E C H N I C A L C O M M I S S I O N _ _ _ _ _ _ _
45、_ _ _ _ _ PROTECTION AGAINST LIGHTNING P a r t 4 : E l e c t r i c a l a n d e l e c t r o n i c s y s t e m s w i t h i n s t r u c t u r e s FOREWORD 1 ) Th e I n t e r na t io na l E le ct ro te ch n i ca l Co mm i ssi o n ( IE C) i s a w o r ld w i de o r ga n i za t io n fo r st a n da r d iza
46、t io n co m p r i si ng a l l na t io na l e le ct ro te ch n i ca l co m m i t te e s ( IE C Na t io na l Co m m i t te e s) . Th e o b je ct o f I EC i s to p ro mo te i n t e r na tio na l co -o pe ra t io n o n a l l q ue st io n s co n ce r n i n g st a nda r d i za t io n i n t he e le ct ri c
47、a l a n d e le ct ro n i c fi e l d s. To t h i s e n d a n d in a d d i t io n to o the r a ct iv i t ie s, IE C p u b l i she s I n t e r na t io na l Sta n da r d s, Te ch n i ca l Spe ci fi ca t io n s, Te ch n i ca l Re po r ts, P u b l i cl y Av a i la b le Spe ci fi ca t io n s ( PA S ) a n d
48、 Gu i de s ( h e re a ft e r r e fe r re d to a s “ IE C P u b l i ca t io n ( s) ”) . Th e i r p re pa ra t io n i s e n t ru ste d to te ch n i ca l co m m i t te e s; a ny I E C Na t io na l Co mm i t te e in te re st e d i n t he su b je ct de a l t w i t h ma y pa r ti ci pa te i n th i s p r e
49、 pa ra to ry w o r k . In te r na t io na l , go v e r nme n ta l a n d no n - g o v e r n me n ta l o r ga n i za t io n s l i a i si n g w i t h t he I EC a l so pa r ti cip a te i n t h i s p re pa ra t io n . IE C co l la bo ra te s cl o se ly w i t h the I n te r na t io na l Or ga n i za t io n fo r S ta nda r d i za t io n ( IS O) i n a cco r d a n ce w i t h co nd i t io n s de te r m i ne d by a g re e me n t be t we e n t he two
