IEC 62561-7:2024

Lightning protection system components (LPSC) - Part 7: Requirements for earthing enhancing compounds

IEC 62561-7:2024 specifies the requirements and tests for earthing enhancing compounds producing low resistance of an 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) Figure A.1 has been replaced with a simpler one that clearly shows the high and low corrosion load limits of the earth enhancing compounds without the need for special knowledge;
b) pH measurement has been introduced.

Composants des systèmes de protection contre la foudre (CSPF) - Partie 7: Exigences pour les enrichisseurs de terre

L'IEC 62561-7:2024 spécifie les exigences et les essais pour les enrichisseurs de terre qui génèrent une faible résistance d'un 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) la Figure A.1 a été remplacée par une figure plus simple, qui indique clairement les limites haute et basse de la force corrosive des enrichisseurs de terre sans nécessiter aucune connaissance particulière;
b) le mesurage du pH a été ajouté.

General Information

• Status: Published
• Publication Date: 21-Feb-2024
• ICS: 29.020 - Electrical engineering in general
• ICS: 91.120.40 - Lightning protection
• Technical Committee: TC 81 - Lightning protection
• Drafting Committee: MT 14 - TC 81/MT 14
• Current Stage: PPUB - Publication issued
• Start Date: 15-Mar-2024
• Completion Date: 22-Feb-2024

Relations

• Revises: IEC 62561-7:2018 - Lightning protection system components (LPSC) - Part 7: Requirements for earthing enhancing compounds
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 62561-7 ®
Edition 3.0 2024-02
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Lightning protection system components (LPSC) –
Part 7: Requirements for earthing enhancing compounds

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
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copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
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IEC 62561-7 ®
Edition 3.0 2024-02
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Lightning protection system components (LPSC) –
Part 7: Requirements for earthing enhancing compounds
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 29.020, 91.120.40 ISBN 978-2-8322-8353-0

– 2 – IEC 62561-7:2024 RLV © IEC 2024
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 7
4 Requirements . 8
4.1 General . 8
4.2 Documentation and installation instructions . 8
4.3 Material . 9
4.4 Marking . 9
5 Tests . 9
5.1 General . 9
5.2 Leaching test . 10
5.2.1 General . 10
5.2.2 Determination of leachable ions . 10
5.2.3 Passing Acceptance criteria . 10
5.3 Sulphur determination . 10
5.3.1 General . 10
5.3.2 Passing Acceptance criteria . 10
5.4 Determination of resistivity . 10
5.4.1 General . 10
5.4.2 Testing apparatus . 11
5.4.3 Test procedure . 12
5.4.4 Passing Acceptance . 13
5.5 pH measurement. 13
5.5.1 General . 13
5.5.2 Testing apparatus – Reagents . 13
5.5.3 Material preparation . 13
5.5.4 Test procedure . 14
5.5.5 Acceptance criteria . 14
5.6 Corrosion tests . 14
5.6.1 General . 14
5.6.2 Test apparatus . 14
5.6.3 Test preparation . 14
5.6.4 Test procedure . 15
5.6.5 Passing Acceptance . 15
5.7 Documentation and installation instructions . 15
5.8 Marking and indications . 15
6 Structure and content of the test report . 16
6.1 General . 16
6.2 Report identification . 16
6.3 Specimen description . 16
6.4 Standards and references . 17
6.5 Test procedure . 17
6.6 Testing equipment description . 17
6.7 Measuring instruments description . 17

6.8 Results and parameters recorded . 17
6.8.1 Measured, observed or derived results . 17
6.8.2 Statement of pass or fail . 17
Annex A (informative) Corrosion load . 18
Annex B (normative) Applicability of previous tests . 20
Bibliography . 21

Figure 1 – Typical configurations for a four-electrode soil box . 12
Figure A.1 – Corrosion load (free corrosion without concentration cell) . 19

Table B.1 – Differences in the requirements for earthing enhancing compounds
complying with IEC 62561-7:2011 or IEC 62561-7:2018 . 20

– 4 – IEC 62561-7:2024 RLV © IEC 2024
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
LIGHTNING PROTECTION SYSTEM COMPONENTS (LPSC) –

Part 7: Requirements for earthing enhancing compounds

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and
in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,
Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their
preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with
may participate in this preparatory work. International, governmental and non-governmental organizations liaising
with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for
Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
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6) All users should ensure that they have the latest edition of this publication.
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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
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9) IEC draws attention to the possibility that the implementation of this document may involve the use of (a)
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respect thereof. As of the date of publication of this document, IEC had not received notice of (a) patent(s), which
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This redline version of the official IEC Standard allows the user to identify the changes
made to the previous edition IEC 62561-7:2018. A vertical bar appears in the margin
wherever a change has been made. Additions are in green text, deletions are in
strikethrough red text.
IEC 62561-7 has been prepared by IEC technical committee 81: Lightning protection. It is an
International Standard.
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) Figure A.1 has been replaced with a simpler one that clearly shows the high and low
corrosion load limits of the earth enhancing
...

IEC 62561-7 ®
Edition 3.0 2024-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Lightning protection system components (LPSC) –
Part 7: Requirements for earthing enhancing compounds

Composants des systèmes de protection contre la foudre (CSPF) –
Partie 7: Exigences pour les enrichisseurs de terre
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
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About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigendum or an amendment might have been published.

IEC publications search - webstore.iec.ch/advsearchform IEC Products & Services Portal - products.iec.ch
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a month by email.
and French, with equivalent terms in 25 additional languages.

Also known as the International Electrotechnical Vocabulary
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IEC 62561-7 ®
Edition 3.0 2024-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Lightning protection system components (LPSC) –

Part 7: Requirements for earthing enhancing compounds

Composants des systèmes de protection contre la foudre (CSPF) –

Partie 7: Exigences pour les enrichisseurs de terre

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.020, 91.120.40 ISBN 978-2-8322-8276-2

– 2 – IEC 62561-7:2024 © IEC 2024
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 7
4 Requirements . 8
4.1 General . 8
4.2 Documentation and installation instructions . 8
4.3 Material . 8
4.4 Marking . 8
5 Tests . 9
5.1 General . 9
5.2 Leaching test . 9
5.2.1 General . 9
5.2.2 Determination of leachable ions . 10
5.2.3 Acceptance criteria . 10
5.3 Sulphur determination . 10
5.3.1 General . 10
5.3.2 Acceptance criteria . 10
5.4 Determination of resistivity . 10
5.4.1 General . 10
5.4.2 Testing apparatus . 10
5.4.3 Test procedure . 11
5.4.4 Acceptance criteria . 12
5.5 pH measurement. 12
5.5.1 General . 12
5.5.2 Testing apparatus – Reagents . 12
5.5.3 Material preparation . 12
5.5.4 Test procedure . 13
5.5.5 Acceptance criteria . 13
5.6 Corrosion tests . 13
5.6.1 General . 13
5.6.2 Test apparatus . 13
5.6.3 Test preparation . 13
5.6.4 Test procedure . 14
5.6.5 Acceptance criteria . 14
5.7 Documentation and installation instructions . 14
5.8 Marking . 14
6 Structure and content of the test report . 14
6.1 General . 14
6.2 Report identification . 15
6.3 Specimen description . 15
6.4 Standards and references . 15
6.5 Test procedure . 15
6.6 Testing equipment description . 16
6.7 Measuring instruments description . 16

6.8 Results and parameters recorded . 16
6.8.1 Measured, observed or derived results . 16
6.8.2 Statement of pass or fail . 16
Annex A (informative) Corrosion load . 17
Annex B (normative) Applicability of previous tests . 18
Bibliography . 19

Figure 1 – Typical configurations for a four-electrode soil box . 11
Figure A.1 – Corrosion load (free corrosion without concentration cell) . 17

Table B.1 – Differences in the requirements for earthing enhancing compounds
complying with IEC 62561-7:2011 or IEC 62561-7:2018 . 18

– 4 – IEC 62561-7:2024 © IEC 2024
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
LIGHTNING PROTECTION SYSTEM COMPONENTS (LPSC) –

Part 7: Requirements for earthing enhancing compounds

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and
in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,
Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their
preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with
may participate in this preparatory work. International, governmental and non-governmental organizations liaising
with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for
Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for
...