EN 62305-3:2006

Protection against lightning - Part 3: Physical damage to structures and life hazard

Provides the requirements for protection of a structure against physical damage by means of a lightning protection system (LPS), and for protection against injury to living beings due to touch and step voltages in the vicinity of an LPS (see IEC 62305-1). This standard is applicable to: a) design, installation, inspection and maintenance of an LPS for structures without limitation of their height; b) establishment of measures for protection against injury to living beings due to touch and step voltages.

Blitzschutz - Teil 3: Schutz von baulichen Anlagen und Personen

Protection contre la foudre - Partie 3: Dommages physiques sur les structures et risques humains

Donne des exigences pour la protection des structures contre les dommages physiques par un système de protection contre la foudre (SPF) et pour la protection contre les lésions d'êtres vivants en raison des tensions de contact et de pas à proximité du SPF, à l'extérieur des structures (voir la CEI 62305-1). La présente norme est applicable: a) à la conception, à l'installation, à l'inspection et à la maintenance des SPF des structures, sans limitation de hauteur; b) à la mise en uvre de mesures pour la protection contre les lésions d'êtres vivants en raison de tensions de contact et de pas.

Zaščita pred delovanjem strele - 3. del: Fizična škoda na zgradbah in nevarnost za živa bitja (IEC 62305-3:2006, spremenjen)

General Information

• Status: Withdrawn
• Publication Date: 22-Feb-2006
• Withdrawal Date: 31-Jan-2009
• ICS: 29.020 - Electrical engineering in general
• ICS: 91.120.40 - Lightning protection
• Technical Committee: CLC/TC 81X - Lightning protection
• Drafting Committee: IEC/TC 81 - IEC_TC_81
• Parallel Committee: IEC/TC 81 - IEC_TC_81
• Current Stage: 9960 - Withdrawal effective - Withdrawal
• Start Date: 02-Jan-2014
• Completion Date: 02-Jan-2014
• Ref Project: SIST EN 62305-3:2006 - Protection against lightning - Part 3: Physical damage to structures and life hazard

Relations

• Replaced By: EN 62305-3:2011 - Protection against lightning - Part 3: Physical damage to structures and life hazard
• Effective Date: 28-Jan-2023
• Amended By: EN 62305-3:2006/A11:2009 - Protection against lightning - Part 3: Physical damage to structures and life hazard
• Effective Date: 29-Jan-2023

Standards Content (Sample)

SLOVENSKI STANDARD
01-junij-2006
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SIST IEC 61024-1:1996
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Protection against lightning -- Part 3: Physical damage to structures and life hazard
Blitzschutz -- Teil 3: Schutz von baulichen Anlagen und Personen
Protection contre la foudre -- Partie 3: Dommages physiques sur les structures et risques
humains
Ta slovenski standard je istoveten z: EN 62305-3:2006
ICS:
91.120.40 =DãþLWDSUHGVWUHOR Lightning protection
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 62305-3
NORME EUROPÉENNE
February 2006
EUROPÄISCHE NORM
ICS 29.020; 91.120.40
English version
Protection against lightning
Part 3: Physical damage to structures and life hazard
(IEC 62305-3:2006, modified)
Protection contre la foudre Blitzschutz
Partie 3: Dommages physiques Teil 3: Schutz von baulichen Anlagen
sur les structures et risques humains und Personen
(CEI 62305-3:2006, modifiée) (IEC 62305-3:2006, modifiziert)

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.

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 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, Cyprus, the Czech
Republic, Denmark, Estonia, Finland, France, 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.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Central Secretariat: rue de Stassart 35, B - 1050 Brussels

© 2006 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 62305-3:2006 E
Foreword
The text of document 81/264/FDIS, future edition 1 of IEC 62305-3, prepared by IEC TC 81, Lightning
protection, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as
EN 62305-2 on 2006-02-01.
A draft amendment, prepared by the Technical Committee CENELEC TC 81X, Lightning protection,
containing some common modifications to document 81/264/FDIS, was submitted to the formal vote and
was approved by CENELEC on 2006-02-01 for inclusion into EN 62305-2.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
(dop) 2006-11-01
national standard or by endorsement
– latest date by which the national standards conflicting
(dow) 2009-02-01
with the EN have to be withdrawn
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.
__________
- 3 - EN 62305-3:2006
Endorsement notice
The text of the International Standard IEC 62305-2:2006 was approved by CENELEC as a European
Standard with agreed common modifications as given below.
COMMON MODIFICATIONS
3 Terms and definitions
Modify the following definitions as follows:
3.16
connecting component
part of an external LPS which is used for the connection of conductors to each other or to metallic
installations, defined as in EN 50164 series
3.17
fixing component
part of an external LPS which is used to fix the elements of the LPS to the structure to be protected,
defined as in EN 50164 series
Annex E
E.4.3.3 Welding or clamping to the steel-reinforcing rods
Modify the Note as follows:
NOTE Specifically designed clamps complying with and tested according to the EN 50164 series shall be used.
E.4.3.7 Down-conductors
Modify the 12th paragraph as follows:
If steel structures are used as down-conductors every steel column shall be connected to the steel
reinforcing rods of the concrete foundation according to Figure E.8 by proprietary bonding points
complying with the EN 50164 series
E.5.2.4.1 General information
Modify the first paragraph as follows:
The maximum permissible temperature for a conductor will not be exceeded if the cross-section complies
with Table 6 and the EN 50164 series.
E.5.2.4.2 Non-isolated air-termination
Add at the end of the second paragraph:
NOTE Z1  For more details see EN 50164 series.
E.5.5 Components
Replace the text of the subclause by:
Components of LPS shall withstand the electromagnetic effects of lightning current and predictable
accidental stresses without being damaged. This can be achieved by choosing components that have
successfully been tested in accordance with the EN 50164 series.
All components shall comply with the EN 50164 series.

E.5.6.1 Mechanical design
Modify the 6th paragraph as follows:
The LPS designer and the LPS installer should specify conductor fasteners and fixtures which will
withstand the electrodynamic forces of lightning current in the conductors and also allow for the
expansion and contraction of conductors due to the relevant temperature rise according to the EN 50164
series.
E.5.6.2.1 Materials
Modify the first paragraph 1 as follows:
LPS materials and conditions of use are listed in Table 5 and the EN 50164 series.
E.5.6.2.2.1 Metals in soil and air
Modify the Note as follows:
NOTE Spark gaps having a protection level U of 2,5 kV and a minimum I of 50 kA (10/350 µs) complying with EN 50164-3 are
p imp
suitable.
IEC 62305-3
Edition 1.0 2006-01
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Protection against lightning –
Part 3: Physical damage to structures and life hazard

Protection contre la foudre –
Partie 3: Dommages physiques sur les structures et risques humains

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
XG
CODE PRIX
ICS 29.020; 91.120.40 ISBN 2-8318-8366-0

62305-3 © IEC:2006 – 3 – – 2 – 62305-3 © IEC:2006
CONTENTS
FOREWORD. 6
INTRODUCTION. 8

1 Scope. 9
2 Normative references . 9
3 Terms and definitions .10
4 Lightning protection system (LPS) .13
4.1 Class of LPS .13
4.2 Design of the LPS .14
4.3 Continuity of steelwork in reinforced concrete structures .14
5 External lightning protection system .15
5.1 General .15
5.2 Air-termination systems.15
5.3 Down-conductor systems.19
5.4 Earth-termination system.22
5.5 Components .24
5.6 Materials and dimensions .26
6 Internal lightning protection system .29
6.1 General .29
6.2 Lightning equipotential bonding .29
6.3 Electrical insulation of the external LPS .32
7 Maintenance and inspection of an LPS .33
7.1 Application of inspections.33
7.2 Order of inspections .33
7.3 Maintenance.33
8 Protection measures against injury to living beings due to touch and step voltages .34
8.1 Protection measures against touch voltages.34
8.2 Protection measures against step voltages.34

Annex A (normative) Positioning the air-termination system.35
Annex B (normative) Minimum cross-section of the entering cable screen in order to
avoid dangerous sparking .41
Annex C (informative) Partitioning of the lightning current amongst down-conductors .42
Annex D (informative) Additional information for LPS in the case of structures with a
risk of explosion.46
Annex E (informative) Guidelines for the design, construction, maintenance and
inspection of lightning protection systems . 52

Bibliography.154

62305-3 © IEC:200662305-3 © IEC:2006 – 5 – – 3 –
Figure 1 – Loop in a down-conductor .20
Figure 2 – Minimum length l of each earth electrode according to the class of LPS.22
Figure A.1 – Volume protected by a vertical air-termination rod .35
Figure A.2 – Volume protected by a vertical air-termination rod .36
Figure A.3 – Volume protected by a wire air-termination system .36
Figure A.4 – Volume protected by isolated wires combined in a mesh according to the
protective angle method and rolling sphere method .37
Figure A.5 – Volume protected by non-isolated wires combined in a mesh according to
the mesh method and the protective angle method .38
Figure A.6 – Design of an air-termination system according to the rolling sphere
method .39
Figure C.1 – Values of coefficient k in the case of a wire air-termination system and a
c
type B earth-termination system.43
Figure C.2 – Values of coefficient k in the case of a mesh air-termination system and
c
type B earth-termination system.44
Figure C.3 – Examples of calculation of the separation distance in the case of a
meshed air-termination system, an interconnecting ring of the down-conductors at
each level and a type B earth-termination system .45
Figure E.1 – LPS design flow diagram . 54
Figure E.2 – Values of coefficient k in case of a sloped roof with air-termination on
c
the ridge and a type B earthing system . 61
Figure E.3 – LPS design for a cantilevered part of a structure. 62
Figure E.4 – Equipotential bonding in a structure with a steel reinforcement . 64
Figure E.5 – Welded joints of reinforcing rods in reinforced concrete, if permitted. 65
Figure E.6 – Example of clamps used as joints between reinforcing rods and
conductors. 66
Figure E.7 – Examples for connection points to the reinforcement in a reinforced
concrete wall . 67
Figure E.8 – Use of metallic facade as natural down-conductor system and connection
of facade supports .
...

SLOVENSKI SIST EN 62305-3
STANDARD
junij 2006
Zaščita pred delovanjem strele – 3. del: Fizična škoda na zgradbah in
nevarnost za živa bitja (IEC 62305-3:2006, spremenjen)

Protection against lightning – Part 3: Physical damages to structures and life
hazard (IEC 62305-3:2006, modified)

Protection contre la foudre – Partie 3: Dommages physiques sur les structures et
risques humains (CEI 62305-3:2006, modifieé)

Blitzschutz – Teil 3: Schutz von baulichen Anlagen und Personen (IEC 62305-
2:2006, modifiziert)
Referenčna oznaka
ICS 91.120.40 SIST EN 62305-3:2006 (sl)

Nadaljevanje na straneh II in III ter od 1 do 137

© 2011-06. Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov ni dovoljeno.

SIST EN 62305-3 : 2006
NACIONALNI UVOD
Standard SIST EN 62305-3 (sl), Zaščita pred delovanjem strele – 3. del: Fizična škoda na zgradbah in
nevarnost za živa bitja (IEC 62305-3:2006, spremenjen), 2006, ima status slovenskega standarda in je
enakovreden evropskemu standardu EN 62305-3 (en), Protection against lightning – Part 3: Physical
damages to structures and life hazard (IEC 62305-3:2006, modified), 2006-2.

NACIONALNI PREDGOVOR
Evropski standard EN 62305-3:2006 je pripravil tehnični odbor Evropskega komiteja za
standardizacijo v elektrotehniki CLC/TC 81X Zaščita pred delovanjem strele.
Slovenski standard SIST EN 62305-3:2006 je prevod evropskega standarda EN 62305-3:2006. V
primeru spora glede besedila slovenskega prevoda v tem standardu je odločilen izvirni mednarodni
standard v angleškem jeziku. Slovensko izdajo standarda je pripravil tehnični odbor SIST/TC STZ
Zaščita pred delovanjem strele.
Odločitev za izdajo tega standarda je dne 15. aprila 2006 sprejel SIST/TC STZ.

ZVEZA Z NACIONALNIMI STANDARDI
S privzemom tega mednarodnega standarda veljajo za omenjeni namen referenčnih standardov vsi
standardi, navedeni v izvirniku, razen tistih, ki so že sprejeti v nacionalno standardizacijo:
SIST EN 60079-10:2003 Električne naprave za eksplozivne plinske atmosfere – 10. del: Razdelitev
eksplozijsko ogroženih prostorov (IEC 60079-10:2002)
SIST EN 60079-14:2003 Električne naprave za eksplozivne plinske atmosfere – 14. del: Električne
inštalacije v eksplozijsko ogroženih prostorih (razen v rudnikih) (IEC
60079-14:2002)
SIST EN 61241-10:2005 Električne naprave za uporabo v prisotnosti gorljivega prahu – 10. del:
Razdelitev prostorov, v katerih je lahko prisoten gorljiv prah (IEC 61241-
10:2004)
SIST EN 61241-14:2005 Električne naprave za uporabo v prisotnosti gorljivega prahu – 14. del:
Izbira in inštalacija (IEC 61241-14:2004)
SIST EN 62305-1:2006 Zaščita pred delovanjem strele – 1. del: Splošna načela (IEC 62305-
1:2006)
SIST EN 62305-2:2006 Zaščita pred delovanjem strele – 2. del: Vodenje rizika (IEC 62305-
2:2006)
SIST EN 62305-4:2006 Zaščita pred delovanjem strele – 4. del: Električni in elektronski sistemi v
zgradbah (IEC 62305-4:2006)
SIST ISO 3864-1:2003 Grafični simboli – Opozorilne barve in opozorilni znaki – Načela
načrtovanja opozorilnih znakov na delovnem mestu in na javnih
površinah
OSNOVA ZA IZDAJO STANDARDA
– privzem standarda EN 62305-3:2006
II
SIST EN 62305-3 : 2006
OPOMBE
– Povsod, kjer se v besedilu standarda uporablja izraz “evropski standard”, v
– Nacionalni uvod in nacionalni predgovor nista sestavni del standarda
– Ta nacionalni dokument je enakovreden EN 62305-3:2006 in je objavljen z dovoljenjem
CENELEC
Avenue Marnix 17
B - 1000 Brussels
Belgija
This national document is identical with EN 62305-3:2006 and is published with the permission of

CENELEC
Avenue Marnix 17
B - 1000 Brussels
Belgium
III
EVROPSKI STANDARD EN 62305-3
EUROPEAN STANDARD
NORME EUROPÉENNE
EUROPÄISCHE NORM februar 2006
ICS: 29.020; 91.120.40
Slovenska izdaja
Zaščita pred delovanjem strele – 3. del: Fizična škoda na zgradbah in
nevarnost za živa bitja (IEC 62305-3:2006, spremenjen)

Protection against lightning – Part 3: Protection contre la foudre – Partie 3: Blitzschutz – Teil 3: Schutz von
Physical damages to structures and Dommages physiques sur les baulichen Anlagen und
life hazard structures et risques humains Personen
(IEC 62305-3:2006, modified) (CEI 62305-3:2006, modifieé) (IEC 62305-2:2006, modifiziert)

Ta evropski standard je CENELEC sprejel 1. februarja 2006. Člani CENELEC morajo izpolnjevati
notranje predpise CEN/CENELEC, s katerimi je predpisano, da mora biti ta standard brez kakršnih koli
sprememb sprejet kot nacionalni standard.

Najnovejši seznami teh nacionalnih standardov z njihovimi bibliografskimi podatki se na zahtevo lahko
dobijo pri Centralnem sekretariatu ali katerem koli članu CENELEC.

Ta evropski standard obstaja v treh izvirnih izdajah (angleški, francoski in nemški). Izdaje v drugih
jezikih, ki jih članice CENELEC na lastno odgovornost prevedejo in izdajo ter prijavijo pri Centralnem
sekretariatu CEN, veljajo kot uradne izdaje.

Člani CENELEC so nacionalni elektrotehniški komiteji Avstrije, Belgije, Cipra, Češke republike,
Danske, Estonije, Finske, Francije, Grčije, Irske, Islandije, Italije, Latvije, Litve, Luksemburga, Malte,
Madžarske, Nemčije, Nizozemske, Norveške, Poljske, Portugalske, Romunije, Slovaške, Slovenije,
Španije, Švedske, Švice in Združenega kraljestva.

CENELEC
Evropski komite za standardizacijo v elektrotehniki
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Centralni sekretariat: Rue de Stassart 36, B-1050 Bruselj

© 2006 CENELEC. Lastnice avtorskih pravic so vse države članice CENELEC. Ref. oznaka EN 62305-3:2006 E

SIST EN 62305-3 : 2006
VSEBINA Stran
Predgovor k evropskemu standardu .6
Predgovor .9
Uvod .11
1 Področje uporabe .12
2 Zveze s standardi .12
3 Izrazi in definicije .13
4 Sistem zaščite pred delovanjem strele (LPS).15
4.1 Vrsta LPS .15
4.2 Načrtovanje LPS.16
4.3 Neprekinjenost jeklene armature v armiranobetonskih zgradbah.16
5 Zunanji sistem zaščite pred delovanjem strele .17
5.1 Splošno.17
5.2 Lovilni sistemi .17
5.3 Odvodni sistemi.20
5.4 Ozemljitveni sistem.23
5.5 Sestavni deli .25
5.6 Materiali in mere.27
6 Notranji sistem zaščite pred delovanjem strele.29
6.1 Splošno.29
6.2 Izenačitev potencialov strele .29
6.3 Električna izolacija zunanjega LPS .32
7 Vzdrževanje in pregledovanje LPS .33
7.1 Izvajanje pregledov.33
7.2 Vrste pregledov .33
7.3 Vzdrževanje.33
8 Ukrepi za zaščito pred poškodbami živih bitij zaradi napetosti dotika in koraka.33
8.1 Ukrepi za zaščito pred napetostjo dotika.33
8.2 Ukrepi za zaščito pred napetostjo koraka .34
Dodatek A (normativni): Nameščanje lovilnega sistema.35
Dodatek B (normativni): Najmanjši prerez kabelskega zaslona vstopajočega kabla za preprečitev
nevarnega iskrenja.40
Dodatek C (informativni): Delitev toka strele med odvodi .41
Dodatek D (informativni): Dodatne informacije za LPS za zgradbe s tveganjem eksplozije .45
Dodatek E (informativni): Smernice za načrtovanje, namestitev, vzdrževanje in pregledovanje
sistemov za zaščito pred delovanjem strele .50

Slika 1: Zanka v odvodu .22
Slika 2: Najmanjša dolžina l vsakega ozemeljila glede na vrsto LPS.24
Slika A.1: Prostor, ščiten z navpično lovilno palico .35
SIST EN 62305-3 : 2006
Slika A.2: Prostor, ščiten z navpično lovilno palico .36
Slika A.3: Prostor, ščiten z lovilno žico.36
Slika A.4: Prostor, ščiten z izoliranimi žicami, povezanimi v mrežo, skladno z metodo
zaščitnega kota in metodo kotaleče krogle .37
Slika A.5: Prostor, ščiten z neizoliranimi žicami, povezanimi v mrežo, skladno z metodo
mreže in metodo zaščitnega kota .37
Slika A.6: Načrt lovilnega sistema po metodi kotaleče krogle.38
Slika C.1: Vrednosti koeficienta k pri lovilnem sistemu iz žice in ozemljitvenega sistema tipa B.42
c
Slika C.2: Vrednosti koeficienta k pri lovilnem sistemu iz mreže vodnikov in ozemljitvenega
c
sistema tipa B.43
Slika C.3: Primeri izračunavanja ločilne razdalje v lovilnem sistemu iz mreže vodnikov,
medsebojno povezanem obroču odvodov na vsakem nivoju in ozemljitvenem sistemu tipa B.44
Slika E.1: Diagram poteka načrtovanja LPS .51
Slika E.2: Vrednosti koeficienta k v primeru nagnjene strehe z lovilniki na slemenu in
c
ozemljitvenim sistemom tipa B.57
Slika E.3: Načrtovanje LPS pri zgradbah z napuščem.58
Slika E.4: Primer izenačitve potencialov v zgradbi z jekleno armaturo.60
Slika E.5: Varjeni spoji armaturnih palic v armiranem betonu, če je to dovoljeno.61
Slika E.6: Primer spojk, ki se uporabljajo kot spoji med armaturnimi palicami in vodniki .62
Slika E.7: Primeri povezovalnih točk na armaturo v armiranobetonski steni .63
Slika E.8: Uporaba kovinske fasade kot pomožni odvodni sistem in povezava fasadnih nosilcev.67
Slika E.9: Povezovanje neprekinjenih oken na kovinsko fasadno prekritje .58
Slika E.10: Notranji odvodi v industrijskih zgradbah .70
Slika E.11: Namestitev povezovalnih vodnikov v armiranobetonskih zgradbah in
pregibnih povezav med dvema armiranobetonskima deloma .72
Slika E.12: Načrtovanje lovilnika po metodi zaščitnega kota za različne višine
glede na preglednico 2.75
Slika E.13: Izolirani zunanji LPS z uporabljenima dvema izoliranima lovilnima stebroma,
načrtovan po načrtovalni metodi zaščitnega kota.
...