IEC 62561-1:2012

IEC 62561-1
®

Edition 1.0 2012-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE


Lightning protection system components (LPSC) –
Part 1: Requirements for connection components

Composants des systèmes de protection contre la foudre (CSPF) –
Partie 1: Exigences pour les composants de connexion

IEC 62561-1:2012-02(en-fr)

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IEC 62561-1

®


Edition 1.0 2012-02




INTERNATIONAL



STANDARD




NORME



INTERNATIONALE











Lightning protection system components (LPSC) –

Part 1: Requirements for connection components




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

Partie 1: Exigences pour les composants de connexion
















INTERNATIONAL

ELECTROTECHNICAL

COMMISSION


COMMISSION

ELECTROTECHNIQUE


INTERNATIONALE




ICS 29.020; 91.120.40 ISBN 978-2-8322-2980-4



Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale

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– 2 – IEC 62561-1:2012  IEC 2012
CONTENTS
FOREWORD. 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 7
4 Classification . 8
5 Requirements . 9
5.1 General . 9
5.2 Installation instructions . 9
5.3 Lightning current carrying capability . 9
5.4 Static mechanical stress . 9
5.5 Screwed clamping connection . 9
5.6 Dismantling of test joints . 9
5.7 Damage to conductors and metal installations . 9
5.8 Safe connection . 10
5.9 Terminals of bonding bars . 10
5.10 Marking . 10
6 Tests . 10
6.1 General conditions for tests . 10
6.2 Test preparation . 11
6.2.1 Arrangement of the specimen . 11
6.2.2 Conditioning/ageing . 11
6.3 Electrical test . 11
6.4 Static mechanical test . 12
6.5 Marking test . 13
7 Electromagnetic compatibility (EMC) . 13
8 Structure and content of the test report . 13
8.1 General . 13
8.2 Report identification . 13
8.3 Specimen description . 13
8.4 Conductor . 14
8.5 Standards and references . 14
8.6 Test procedure . 14
8.7 Testing equipment description . 14
8.8 Measuring instruments description . 14
8.9 Results and parameters recorded . 14
8.10 Statement of pass/fail . 15
Annex A (informative) Summary of the requirements and corresponding tests . 18
Annex B (informative) Typical arrangements for various LPSCs . 19
Annex C (normative) Conditioning/ageing for connection components . 20
Bibliography . 21

Figure 1 – Basic arrangement of specimen with cross connection component . 15
Figure 2 – Basic arrangement of specimen with parallel connection component . 16
Figure 3 – Basic arrangement of specimen with bridging component . 16

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IEC 62561-1:2012  IEC 2012 – 3 –
Figure 4 – Basic arrangement of specimen with equipotential bonding bar . 17
Figure 5 – Basic arrangement for contact measurement of expansion piece . 17

Table 1 – Lightning impulse current (I ) parameters . 12
imp
Table A.1 – Requirements and corresponding tests . 18

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– 4 – IEC 62561-1:2012  IEC 2012
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________

LIGHTNING PROTECTION SYSTEM COMPONENTS (LPSC) –

Part 1: Requirements for connection components

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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Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 62561-1 has been prepared by IEC technical committee 81:
Lightning protection.
This bilingual version (2015-10) corresponds to the English version, published in 2012-02.
The text of this standard is based on the following documents:
FDIS Report on voting
81/416/FDIS 81/422A/RVD

Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
The French version of this standard has not been voted upon.

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IEC 62561-1:2012  IEC 2012 – 5 –
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
The content of this part of IEC 62561 is taken from European Standard EN 50164-1.
A list of all the parts in the IEC 62561 series, published under the general title Lightning
protection system components (LPSC), can be found on the IEC website.
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data
related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.

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– 6 – IEC 62561-1:2012  IEC 2012
INTRODUCTION
This part of IEC 62561 deals with the requirements and tests for lightning protection system
components (LPSC) used for the installation of a lightning protection system (LPS) designed
and implemented according to the IEC 62305 series of standards.

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IEC 62561-1:2012  IEC 2012 – 7 –
LIGHTNING PROTECTION SYSTEM COMPONENTS (LPSC) –

Part 1: Requirements for connection components



1 Scope
This part of IEC 62561 specifies the requirements and tests for metallic connection
components that form part of a lightning protection system (LPS). Typically, these can be
connectors, bonding and bridging components, expansion pieces and test joints.
Testing of components for an explosive atmosphere is not covered by this standard.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and
are indispensable for its application. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any
amendments) applies.
IEC 60068-2-52:1996, Environmental testing – Part 2-52: Tests – Test Kb: Salt mist, cyclic
(sodium chloride solution)
IEC 62305-1, Protection against lightning – Part 1: General principles
IEC 62561-2, Lightning protection system components (LPSC) – Part 2: Requirements for
conductors and earth electrodes
ISO 6957:1988, Copper alloys – Ammonia test for stress corrosion resistance
ISO 6988:1985, Metallic and other non-organic coatings – Sulfur dioxide test with general
condensation of moisture
3 Terms and definitions
For the purpose of this document, the following terms and definitions apply.
3.1
connection component
part of an external LPS which is used for the connection of conductors to each other or to
metallic installations
Note 1 to entry Connection component includes connectors, clamps, bridging component and expansion piece.
3.2
metal installation
extended metal items in the structure to be protected which may form a path for lightning
current, such as pipes, staircases, elevator guide rails, ventilation, heating and air
conditioning ducts, and interconnected reinforcing steel
3.3
bridging component
connection component for the connection of metal installations

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– 8 – IEC 62561-1:2012  IEC 2012
3.4
expansion piece
connection component designed to compensate for changes in length in conductors and/or
metal installations caused by temperature changes
3.5
connector
connection component to interconnect two or more conductors
3.6
clamp
connection component for the connection of conductors to metal installations
3.7
pipe clamp
clamp for the connection of conductors to metal pipes
3.8
test joint
joint designed to facilitate electrical testing and measurement of LPS components
3.9
connection range
minimum to maximum range for which a specific connection component is designed to be
used
3.10
bonding bar
metal bar on which metal installations, external conductive parts, electric power and
telecommunication lines and other cables can be connected to an LPS
3.11
type test
test required to be made before supplying a type of material covered by this standard on a
general commercial basis, in order to demonstrate satisfactory performance characteristics to
meet the intended application
Note 1 to entry These tests are of such a nature that, after they have been carried out, they need not be repeated
unless changes are made to the accessory materials, design or type of manufacturing process which might change
the performance characteristics.
4 Classification
4.1 Classification of components depends on the withstand lightning current as follows:
a) class H for heavy duty;
b) class N for normal duty.
The selection of classes H and N should be performed by the manufacturer in accordance
with the test parameters identified in Table 1.
4.2 Classification is also made according to the installation of connection components:
a) embedded in concrete;
b) not embedded in concrete.

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IEC 62561-1:2012  IEC 2012 – 9 –
5 Requirements
5.1 General
Connection components shall be designed in such a manner that when they are installed in
accordance with the manufacturer’s instructions their performance shall be reliable, stable
and safe for persons and surrounding equipment.
NOTE A summary of the requirements and their corresponding tests is given in Annex A.
5.2 Installation instructions
The manufacturer of the connection components shall provide at least the following
information:
– the classification of the component;
– the recommended tightening torque;
– the range of conductor sizes and materials;
– the connection configuration.
Compliance is checked by inspection.
5.3 Lightning current carrying capability
Connection components shall have sufficient lightning current carrying capability.
Compliance is checked in accordance with 6.3 following the manufacturer’s declaration for the
class (H or N) of the connection components in accordance with 4.1.
5.4 Static mechanical stress
Connection components shall have a sufficient withstand capability against static mechanical
stresses.
Equipotential bonding bars are excluded from this requirement.
Compliance is checked in accordance with 6.4.
5.5 Screwed clamping connection
Where screws and/or nuts are used as the clamping connection, the design shall be such that
the conductor and/or the metal installation is always securely fastened by the screw and/or
nut application.
Compliance is checked by inspection and in accordance with 6.3.
5.6 Dismantling of test joints
It shall be possible to dismantle the test joints after lightning current stress.
Compliance is checked in accordance with 6.3.
5.7 Damage to conductors and metal installations
Connection components shall be so designed that they connect the conductors and/or the
metal installations without undue damage to the conductors, the metal installations and/or the
connection components.

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– 10 – IEC 62561-1:2012  IEC 2012
Compliance is checked by inspection.
5.8 Safe connection
Connection components shall guarantee safe connection within the connection range declared
by the manufacturer.
Compliance is checked in accordance with 6.3.
5.9 Terminals of bonding bars
The input terminals of bonding bars used for lightning protection installations shall have a
diameter of connection equal to or greater than 6 mm.
5.10 Marking
The connection components shall be marked at least with the following:
a) manufacturer’s or responsible vendor’s name or trade mark;
b) identifying symbol (picture, product number etc.);
c) classification, i.e. class N or H.
Where this proves to be impractical, the marking in accordance with b) and c) may be given
on the smallest packing unit.
The marking shall be durable and legible.
NOTE Marking can be applied for example by moulding, pressing, engraving, printing adhesive labels or water
slide transfers.
Compliance is checked in accordance with 6.5.
6 Tests
6.1 General conditions for tests
The tests in accordance with this standard are type tests.
• Unless otherwise specified, tests are carried out with the specimens assembled and
installed as in normal use according to the manufacturer's or supplier's installation
instructions with the recommended conductor materials, sizes and tightening torques. If
the connection component is suitable for various conductors’ materials, then it shall be
tested on each material combination.
• All tests are carried out on new specimens.
• Unless otherwise specified, three specimens are subjected to the tests and the
requirements are satisfied if all the tests are met.
• If only one of the specimens does not satisfy a test due to an assembly or a manufacturing
fault, that test and any preceding one which may have influenced the results of the test
shall be repeated. The tests which follow shall also be carried out in the required
sequence on another full set of specimens, all of which shall comply with the
requirements.
• The electrical test shall be carried out in the order given after conditioning/ageing of the
arrangement of the specimen in accordance with 6.2.2.
The applicant, when submitting the sets of specimens, may also submit an additional set of
specimens which may be necessary should one specimen fail. The testing station will then,
without further request, test the additional set of specimens and will reject only if a further

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IEC 62561-1:2012  IEC 2012 – 11 –
failure occurs. If the additional set of specimens is not submitted at the same time, the failure
of one specimen will entail rejection.
6.2 Test preparation
6.2.1 Arrangement of the specimen
If not otherwise specified by the manufacturer, the conductors and the specimens shall be
cleaned by using a suitable degreasing agent followed by cleaning in demineralizing water
and drying. They shall then be assembled in accordance with the manufacturer’s instructions,
e.g. with the recommended conductors and tightening torques.
The connection component shall be tested in all the connection configurations declared by the
manufacturer in Annex B.
Any connection components accommodating a range of conductors with a variation on any
dimension equal to or less than 2 mm shall be tested using the minimum conductor size
recommended. If the range of conductor sizes is greater than 2 mm, it shall be tested using
the minimum and maximum size of conductors recommended.
The basic arrangement of the specimen with cross connection component, parallel connection
component, bridging component and equipotential bonding bar is shown in Figures 1, 2, 3 and
4, respectively. Terminals of bonding bars are only tested if the connection size is equal to or
2
greater than 16 mm . The test is carried out using the smallest conductor size within the
2
range of the terminal with a minimum of 16 mm conductor. Typical arrangements for various
LPSCs are shown in Annex B.
6.2.2 Conditioning/ageing
Following the manufacturer’s declaration for the location of the connection components in
accordance with 4.2, the arrangement of the specimen shall be subjected to a
conditioning/ageing, as per Annex C, consisting of a salt mist treatment as specified in C.1
followed by a humid sulphurous atmosphere treatment as specified in C.2, and an additional
ammonia atmosphere treatment for specimens made of copper alloy with copper content less
than 80 % as specified in C.3.
After the treatment, the arrangement is fixed on an insulated plate, taking care to avoid any
damage to the specimen due to handling.
This treatment is not necessary for connection components designed to be completely
embedded in concrete. Connection components designed to be partially embedded in
concrete shall be subjected to the conditioning/ageing as per this clause.
Bonding bars destined for indoor applications only are tested without conditioning/ageing.
6.3 Electrical test
After 6.2.2 and without cleaning the arrangement, the specimen shall be stressed three times
by a test current as given in Table 1. The time interval between individual shots shall allow
the arrangement of the specimen to cool down to approximately ambient temperature.
The impulse discharge current passing through the device under test is defined by the crest
value I , and the specific energy W/R The impulse current shall show no reversal and reach
imp .
I within 50 µs. The transfer of the specific energy W/R shall be dissipated within 5 ms.
imp

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– 12 – IEC 62561-1:2012  IEC 2012
Table 1 – Lightning impulse current (I ) parameters
imp
Classification I W/R
imp

kA ± 10 % kJ/Ω ± 35 %
H 100 2 500
N 50 625
NOTE The parameters specified in Table 1 can typically be achieved by
an exponential decaying current in the range of 350 μs according to
IEC 62305-1.

The connection component is deemed to have passed the test if:
a) the contact resistance, measured with a source of at least 10 A as close as possible to the
connect
...