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ПІДТВЕРДЖУВАЛЬНЕ ПОВІДОМЛЕННЯ

Наказом Міністерства економічного розвитку і торгівлі України
від 28.05.2012 №640

Європейський стандарт

EN 62305-3:2011

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

прийнято як національний стандарт методом «підтвердження»
мовою оригіналу за національним позначенням

ДОТУ EN 62305-3:2012

uk: Захист від блискавки. Частина 3. Фізичні руйнування споруд та небезпека
для життя людей (EN 62305-3:2011, IDT)

з наданням чинності в Україні від 2012-08-01EUROPEAN STANDARD

NORME EUROPEENNE EUROPAISCHE NORM

ICS 29.020; 91.120.40

EN 62305-3

March 2011

Supersedes EN 62305-3:2006 + corr. Nov.2006 + corr. Sep.2008 + A11:2009

English version

Protection against lightning -
Part 3: Physical damage to structures and life hazard
(IEC 62305-3:2010, modified)

Protection contre la foudre -

Partie 3: Dommages physiques sur les structures et risques humains (CEI 62305-3:2010, modifiee)

Blitzschutz -

Teil 3: Schutz von baulichen Anlagen und

Perso ne n

(IEC 62305-3:2010, modifiziert)

This European Standard was approved by CENELEC on 2011-01-02. 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, Bulgaria, Croatia, Cyprus, 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.

CENELEC

European Committee for Electrotechnical Standardization
Comite Europeen de Normalisation Electrotechnique
Europaisches Komitee fur Elektrotechnische Normung

Management Centre: Avenue Marnix 17, В -1000 Brussels

© 2011 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members

.Foreword

The text of the International Standard IEC 62305-3:2010, prepared by IECTC81, Lightning protection, together with common modifications prepared by the Technical Committee CENELEC ТС 81X, Lightning protection, was submitted to the formal vote and was approved by CENELEC as EN 62305-3 on 2011-01-02.

This European Standard supersedes EN 62305-3:2006 + corr. Nov.2006 + corn Sep.2008 + A11:2009.

This EN 62305-3:2011 includes the following significant technical changes with respect to EN 62305-3:2006 + corr. Nov.2006 + corr. Sep.2008 + A11:2009:

1. Minimum thicknesses of metal sheets or metal pipes given in Table 3 for air-termination systems are assumed as not able to prevent hot-spot problems.

2. Steel with electro-deposited copper is introduced as material suitable for LPS.

3. Some cross-sectional areas of LPS conductors were slightly modified.

4. For bonding purposes, isolating spark gaps are used for metal installations and SPD for internal systems.

5. Two methods - simplified and detailed - are provided for evaluation of separation distance.

6. Protection measures against injuries of living beings due to electric shock are considered also inside the structure.

7. Improved information for LPS in the case of structures with a risk of explosion are given in Annex D (normative).

Attention is drawn to the possibility that some of the elements of this document may be the subject of 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) 2012-01-02

• latest date by which the national standards conflicting

with the EN have to be withdrawn (dow) 2014-01-02

Endorsement notice

The text of the International Standard IEC 62305-3:2010 was approved by CENELEC as a European Standard with agreed common modifications as given below.

In the official version, for Bibliography, the following note has to be added for the standard indicated:

[2] IEC 61400-24 NOTE Harmonized as EN 61400-24.

COMMON MODIFICATIONS

Through the complete document:

Replace all references to IEC 62561 by references to EN 50164.

2. Normative references

Replace this subclause by:

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 (including any amendments) applies.

NOTE The above mentioned standards EN 50164 series will ultimately be replaced by EN 62561 series. EN 50164 series will still be valid for 72 months from the issuing date of each part of the EN 50164 series.

2. Terms and definitions

Definition 3.16

Add at the end of the paragraph:"... as defined in the EN 50164 series.”

Definition 3.17

Add at the end of the paragraph: “... as defined in the EN 50164 series.”

2. Lightning protection system (LPS)

4.3 Continuity of steelwork in reinforced concrete structures

Replace NOTE 2 by:

NOTE 2 When the continuity of steelwork in reinforced concrete is intended to be established by clamping, specifically designed clamps complying with and tested according to EN 50164-1, should be used.

2. External lightning protection system

5.5.1 General

After the first paragraph, add the following paragraph:

All components shall comply with the EN 50164 series.

5.5.3 Connections

In the 2^nd paragraph, replace “the future IEC 62561-1” with “EN 50164-1”.

5.6.2 Dimensions

Replace the first paragraph by:

Materials, configurations and minimum cross-sectional areas of air-termination conductors, air-termination rods, down-conductors and earth lead-in rods are given in Table 6 and shall comply with the requirements and tests according to the EN 50164 series.

Add at the beginning of the second paragraph “Materials, ...” and replace at the end of the paragraph “IEC 62561 series” with “EN 50164 series”.

In Table 7, delete the NOTE “f”.

Annex E (informative) Guidelines for the design, construction, maintenance and inspection of lightning protection systems

E.4.2.3.2 Mechanical design

In the first sentence of the NOTE, replace “may” with “should” and “IEC 62561” with “EN 50164”.

In the last paragraph, replace “could” with “should” and “IEC 62561” with “EN 50164”.

E.4.3.3 Welding or clamping to the steel-reinforcing rods

In the NOTE, replace “IEC 62561 series of standards are suitable” with “EN 50164 series of standards should be used”.

E.4.3.7 Down-conductors

Replace the 12^th paragraph (i.e. after Figure E.9) by:

“If steel structures are used as down-conductors, every steel column should be connected to the steel reinforcing rods of the concrete foundation according to Figure E.7 by purposely designed bonding points complying with EN 50164 series.”

E.5.2.4.1 General information

Replace the first paragraph by:

“The maximum permissible temperature for a conductor will not be exceeded if its cross-section complies with Table 6 and the EN 50164 series.”

E.5.2.4.2 Non-isolated air-termination

After the 2^nd paragraph, add the following NOTE:

NOTE For more details see EN 50164 series.

E.5.5 Components

Replace the 1^st paragraph by:

“Components of LPS should 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

At the end of the 6^th paragraph, add the following:

“...according to the EN 50164 series.”

E.5.6.2.1 Materials

At the end of the 1^st line, add the following:

“and the EN 50164 series”

E.5.6.2.2.1 Metals in soil and air

Replace the NOTE by:

NOTE Isolating spark gaps having a protection level U_p of 2,5 kV and a minimum l_imp of 50 kA (10/350 ps) complying with EN 50164-3 are suitable.в

I EC

ит®

I

Protection against lightning -

Part 3: Physical damage to structures and life hazard

IEC 62305-3

Edition 2.0 2010-12

colour inside

ІЕС 62305-3:2010(E)

NTERNATIONAL STANDARD

_Д

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Edition 2.0 2010-12

INTERNATIONAL STANDARD

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Protection against lightning -

Part 3: Physical damage to structures and life hazard

INTERNATIONAL

ELECTROTECHNICAL

COMMISSION

PRICE CODE XG

ICS 29.020; 91.120.40

ISBN 978-2-88912-282-0

® Registered trademark of the International Electrotechnical Commission

CONTENTS

FOREWORD 7

INTRODUCTION 10

1. Scope 11

2. Normative references 11

3. Terms and definitions 12

4. Lightning protection system (LPS) 15

   1. Class of LPS 15

   2. Design of the LPS 16

   3. Continuity of steelwork in reinforced concrete structures 16

5. External lightning protection system 17

   1. General 17

      1. Application of an external LPS 17

      2. Choice of external LPS 17

      3. Use of natural components 17

   2. Air-termination systems 18

      1. General 18

      2. Positioning 18

      3. Air-terminations against flashes to the side of tall structures 19

      4. Construction 20

      5. Natural components 20

   3. Down-conductor systems 21

      1. General 21

      2. Positioning for an isolated LPS 22

      3. Positioning for a non-isolated LPS 22

      4. Construction 23

      5. Natural components 23

      6. Test joints 24

   4. Earth-termination system 24

      1. General 24

      2. Earthing arrangement in general conditions 25

      3. Installation of earth electrodes 26

      4. Natural earth electrodes 27

   5. Components 27

      1. General 27

      2. Fixing 28

      3. Connections 28

   6. Materials and dimensions 29

      1. Materials 29

      2. Dimensions 29

6. Internal lightning protection system 31

   1. General 31

   2. Lightning equipotential bonding 32

      1. General 32

      2. Lightning equipotential bonding for metal installations 32

      3. Lightning equipotential bonding for external conductive parts 33

      4. Lightning equipotential bonding for internal systems 34

      5. Lightning equipotential bonding for lines connected to the structure to

1. 1. 6. be protected 34

   2. Electrical insulation of the external LPS 35

      1. General 35

      2. Simplified approach 36

      3. Detailed approach 36

2. Maintenance and inspection of an LPS 37

   1. General 37

   2. Application of inspections 37

   3. Order of inspections 37

   4. Maintenance 37

3. Protection measures against injury to living beings due to touch and step voltages 37

   1. Protection measures against touch voltages 37

   2. Protection measures against step voltages 38

Annex A (normative) Positioning the air-termination system 39

Annex В (normative) Minimum cross-section of the entering cable screen in order to avoid dangerous sparking 45

Annex C (informative) Evaluation of the separation distance s 46

Annex D (normative) Additional information for LPS in the case of structures with a risk of explosion 52

Annex E (informative) Guidelines for the design, construction, maintenance and inspection of lightning protection systems 59

Bibliography 156

1. - Protection angle corresponding to the class of LPS 19

2. - Loop in a down-conductor 23

3. - Minimum length /₁ of each earth electrode according to the class of LPS 25

Figure A.1 - Volume protected by a vertical air-termination rod 39

Figure A.2 - Volume protected by a vertical air-termination rod 40

Figure A.3 - Volume protected by a wire air-termination system 40

Figure A.4 - Volume protected by isolated wires combined in a mesh according to the

protection angle method and rolling sphere method 41

Figure A.5 - Volume protected by non-isolated wires combined in a mesh according to the mesh method and the protection angle method 42

Figure A.6 - Design of an air-termination system according to the rolling sphere method 43

Figure C.1 - Values of coefficient k_c in the case of a wire air-termination system 46

Figure C.2 - Values of coefficient k_c in the case of multiple down-conductors system 47

Figure C.3 - Values of coefficient k_c in the case of a sloped roof with air-termination on

the ridge 49

Figure C.4 - Examples of calculation of the separation distance in the case of multiple down-conductors with an interconnecting ring of the down-conductors at each level 50

Figure C.5 - Values of coefficient k_c in the case of a meshed air-termination system, with a multiple down-conductors system 51

Figure E.1 - LPS design flow diagram 61

Figure E.2 - LPS design for a cantilevered part of a structure 67

Figure E.3 - Measuring the overall electrical resistance 68Figure Е.4 - Equipotential bonding in a structure with a steel reinforcement 70

Figure E.5 - Typical methods of joining reinforcing rods in concrete (where permitted) 71

Figure E.6 - Example of clamps used as joints between reinforcing rods and conductors 72

Figure E.7 - Examples for connection points to the reinforcement in a reinforced concrete wall 73

Figure E.8 - Use of metallic facade as natural down-conductor system and connection of facade supports 77