IEC 62561-2:2025
(Main)Lightning protection system components (LPSC) - Part 2: Requirements for conductors and earth electrodes
Lightning protection system components (LPSC) - Part 2: Requirements for conductors and earth electrodes
IEC 62561-2:2025 specifies the requirements and tests for
- metallic conductors (other than "natural" conductors) that form part of the air-termination and down-conductor systems, and
- metallic earth electrodes that form part of the earth-termination system.
This third edition cancels and replaces the second edition published in 2018. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) definitions of new conductor types mentioned in this document have been added;
b) the document has been updated in line with IEC 60068-2-52:2017 on salt mist treatment;
c) the document has been updated in line with ISO 22479:2019 on humid sulphurous atmosphere treatment;
d) a new normative Annex H for material, configuration and cross-sectional area test has been introduced;
e) a new normative Annex I for applicability of previous tests has been introduced.
f) equipotential earth grid has been introduced.
Composants des systèmes de protection contre la foudre (CSPF) - Partie 2 : Exigences pour les conducteurs et les électrodes de terre
L'IEC 62561-2:2025 spécifie les exigences et les essais pour:
- les conducteurs métalliques (autres que les conducteurs "naturels") qui font partie des dispositifs de capture et des réseaux de conducteurs de descente; et
- les prises de terre métalliques qui font partie du réseau de prises de terre.
Cette troisième édition annule et remplace la deuxième édition parue en 2018. Cette édition constitue une révision technique.
Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
a) les définitions des nouveaux types de conducteurs qui sont mentionnés dans le présent document ont été ajoutées;
b) le document a été actualisé en harmonisation avec l'IEC 60068-2-52:2017, concernant l'exposition au brouillard salin;
c) le document a été actualisé en harmonisation avec l'ISO 22479:2019, concernant l'exposition au dioxyde de soufre en atmosphère humide;
d) une nouvelle Annexe H normative concernant l'essai relatif au matériau, à la configuration et à la section a été ajoutée;
e) une nouvelle Annexe I normative concernant l'applicabilité des essais précédents a été ajoutée;
f) le concept de maillage équipotentiel du réseau de terre a été ajouté.
General Information
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Standards Content (Sample)
IEC 62561-2 ®
Edition 3.0 2025-09
INTERNATIONAL
STANDARD
REDLINE VERSION
Lightning protection system components (LPSC) -
Part 2: Requirements for conductors and earth electrodes
ICS 29.020; 91.120.40 ISBN 978-2-8327-0758-6
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CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 8
4 Requirements . 10
4.1 General . 10
4.2 Documentation and installation instructions . 10
4.3 Air-termination conductors, air-termination rods, earth lead-in rods catenary
wires and down conductors . 11
4.4 Earth electrodes . 14
4.4.1 General . 14
4.4.2 Earth conductors . 16
4.4.3 Earth rods. 16
4.4.4 Earth plates and equipotential earth grids . 17
4.4.5 Couplers for earth rods . 17
4.5 Earth lead-in conductors and earth plates . 18
4.6 Marking . 18
4.6.1 Content of marking . 18
4.6.2 Durability and legibility. 18
5 Tests . 20
5.1 General test conditions . 20
5.2 Air-termination conductors, air-termination rods, catenary wires, down
conductors, earth lead-in rods conductors, earth conductors, earth plates
and equipotential earth grids . 21
5.2.1 General . 21
5.2.2 Test for thickness of coating . 21
5.2.3 Resistance test for coated conductors . 23
5.2.4 Bend and adhesion Bending test for coated conductors . 24
5.2.5 Environmental test for coated materials conductors . 24
5.2.6 Electrical resistivity test . 24
5.2.7 Tensile strength test . 25
5.2.8 Material, configuration and cross-sectional area test . 26
5.3 Earth rods . 26
5.3.1 General . 26
5.3.2 Test for thickness of coating on earth rods . 26
5.3.3 Adhesion test for copper coated earth rods . 26
5.3.4 Electrical resistance test for coated earth rods . 27
5.3.5 Bend test Bending test for copper coated steel earth rods . 28
5.3.6 Environmental test for coated earth rods . 28
5.3.7 Electrical resistivity test for earth rods . 29
5.3.8 Tensile strength test for earth rods . 29
5.3.9 Test for yield/tensile ratio for copper coated steel earth rods . 29
5.3.10 Material, configuration and cross-sectional area test for earth rods . 30
5.4 Couplers for earth rods . 30
5.4.1 General . 30
5.4.2 Compression test by mechanical means . 30
5.4.3 Environmental test . 33
5.4.4 ElectricalLightning current test . 33
5.4.5 Tensile strength test for couplers of earth rods . 33
5.5 Marking test . 33
5.5.1 General test conditions . 33
5.5.2 Acceptance criteria . 34
5.6 Documentation and installation instructions . 34
5.6.1 General test conditions . 34
5.6.2 Acceptance criteria . 34
6 Electromagnetic compatibility (EMC) . 34
7 Structure and content of the test report. 34
7.1 General . 34
7.2 Report identification . 34
7.3 Specimen description . 35
7.4 Conductor . 35
7.5 Standards and references . 35
7.6 Test procedure. 35
7.7 Testing equipment description . 35
7.8 Measuring instruments description . 35
7.9 Results and parameters recorded . 36
7.10 Statement of pass/ or fail . 36
Annex A (normative) Environmental test for conductors, air-termination
rods and earth lead-in rods . 37
A.1 General . 37
A.2 Salt mist treatment . 37
A.3 Humid sulphurous atmosphere treatment . 37
A.4 Ammonia atmosphere treatment . 37
Annex B (normative) ElectricalLightning current test . 38
B.1 General . 38
B.2 Acceptance criteria . 38
Annex C (normative) Requirements and tests for air-termination conductors, air-
termination rods, catenary wires and down conductors . 39
Annex D (normative) Requirements and tests for earth lead-in conductors, earth
electrodes, equipotential earth grids and couplers for earth rods . 40
Annex E (normative) Flow chartSequence of tests for air-termination conductors, air-
termination rods, catenary wires, earth lead-in rods conductors, down-conductors,
earth conductors, earth plates and equipotential earth grids, see Figure E.1 . 42
Annex F (normative) Flow chartSequence of tests for earth rods . 44
Annex G (normative) Flow chartSequence of tests of couplers for earth rods . 46
Annex H (normative) Material, configuration and cross-sectional area test . 48
H.1 General . 48
H.2 Acceptance criteria for air-termination conductors, air-termination rods,
catenary wires and down conductors . 48
H.3 Acceptance criteria for earth lead-in conductors, earth electrodes,
equipotential earth grids . 48
Annex I (normative) Applicability of previous tests . 49
Bibliography . 50
Figure 1 – Coating measurements around the circumference of a round conductor . 22
Figure 2 – Coating measurements of a plate conductor . 22
Figure 3 – Typical test arrangement for adhesion test . 27
Figure 4 – Definitions of upper yield strength R and tensile strength R . 30
eH m
Figure 5 – Typical test arrangement for the compression test by mechanical means . 32
Figure E.1 – Flow chart of tests for air-termination conductors, air-termination rods,
catenary wires, earth lead-in rods conductors, down-conductors, earth conductors
electrodes and equipotential earth plates grids . 43
Figure F.1 – Flow chart of tests for earth rods . 45
Figure G.1 – Flow chart of tests of couplers for earth rods . 47
Table 1 – Material, configuration and cross-sectional area of air-termination
g
conductors, air-te
...
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