CLC/TS 50703-2:2020

SLOVENSKI STANDARD
01-februar-2021
Elementi za zaščito pred strelo (LPSC) - 2. del: Posebne zahteve za preskušanje
elementov LPS, uporabljenih v eksplozivnih atmosferah
Lightning Protection System Components (LPSC) - Part 2: Specific testing requirements
for LPS components used in explosive atmospheres
Ta slovenski standard je istoveten z: CLC/TS 50703-2:2020
ICS:
91.120.40 Zaščita pred strelo Lightning protection
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

TECHNICAL SPECIFICATION CLC/TS 50703-2

SPÉCIFICATION TECHNIQUE
TECHNISCHE SPEZIFIKATION
December 2020
ICS 91.120.40
English Version
Lightning Protection System Components (LPSC) - Part 2:
Specific testing requirements for LPS components used in
explosive atmospheres
Composants des systèmes de protection contre la foudre Blitzschutzsystembauteile (LPSC) - Teil 2: Besondere
(CSPF) - Part 2: Exigences d'essais spécifiques relatives Prüfanforderungen an Blitzschutzsystembauteile zur
aux composants des SPF utilisés dans les atmosphères Verwendung in explosionsgefährdeten Bereichen
explosives
This Technical Specification was approved by CENELEC on 2020-11-09.

CENELEC members are required to announce the existence of this TS in the same way as for an EN and to make the TS available promptly
at national level in an appropriate form. It is permissible to keep conflicting national standards in force.

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, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2020 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. CLC/TS 50703-2:2020 E

Contents
European foreword .4
1 Scope .5
2 Normative references .5
3 Terms and definitions .5
4 Classification of (Ex-LPSC) used in ATEX .6
5 Requirements .7
5.1 General .7
5.2 Lightning current carrying capability .7
5.3 Installation instructions .7
5.4 Marking .7
6 Tests .8
6.1 General condition on tests .8
6.2 Test preparation .8
6.2.1 Arrangement of the specimen .8
6.2.2 Conditioning/ageing .9
6.2.3 Composition of the test gas mixture . 10
6.3 Electrical test . 10
6.3.1 Lightning current test . 10
6.3.2 Acceptance criteria . 10
6.4 Installation instructions . 11
6.4.1 General conditions for tests. 11
6.4.2 Acceptance criteria . 12
6.5 Marking test . 12
6.5.1 General . 12
6.5.2 Acceptance criteria for marking completeness . 12
6.5.3 Acceptance criteria for marking durability and legibility . 12
7 Structure and content of the test report . 12
7.1 General . 12
7.2 Report identification . 13
7.3 Specimen description . 13
7.4 Conductor . 13
7.5 Standards and references . 13
7.6 Test procedure . 14
7.7 Testing equipment description . 14
7.8 Measuring instruments description . 14
7.9 Results and parameters recorded . 14
7.10 Statement of pass/fail . 14
Annex A (normative) Conditioning/ageing Ex-LPSC . 15
A.1 General . 15
A.2 Salt mist test . 15
A.3 Humid sulphurous atmosphere test . 15
A.4 Ammonia atmosphere treatment . 15
Annex B (informative) . 16
B.1 Specimens according to EN 62561-1 . 16

B.2 Typical arrangements for various connection components . 17
B.3 Specimens according to EN 62561-2 . 18
B.4 Specimens according to EN 62561-3 . 19
B.5 Specimens according to EN 62561-4 . 20
B.6 Specimens according to EN 62561-6 . 21
Annex C (normative) Composition of potentially explosive mixtures . 22
Annex D (normative) Summary of the requirements and corresponding tests . 23
Annex E (normative) Flow chart of tests of connection components for explosive atmosphere
(Ex-LPSC) . 24
Bibliography . 25

European foreword
This document (CLC/TS 50703-2:2020) has been prepared by CLC/TC 81X “Lightning protection”.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.

1 Scope
This document defines the requirements and tests relevant to Lightning Protection System Components
suitable for explosive atmospheres (Ex-LPSC).
NOTE This document does not consider EX-LPS Components certified according to EN 60079 series. If a
product has already been tested according to ATEX, it does not have to be tested again according to
CLC/TS 50703-2.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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.
EN 60068-2-52:1996, Environmental testing - Part 2: Tests - Test Kb: Salt mist, cyclic (sodium chloride
solution) (IEC 60068-2-52:1996)
EN 62561-1:2017, Lightning Protection System Components (LPSC) - Part 1: Requirements for
connection components (IEC 62561-1:2017)
EN 62561-2, Lightning Protection System Components (LPSC) - Part 2: Requirements for conductors
and earth electrodes (IEC 62561-2)
EN 62561-3, Lightning Protection System Components (LPSC) - Part 3: Requirements for isolating
spark gaps (ISG) (IEC 62561-3)
EN 62561-4, Lightning protection system components (LPSC) - Part 4: Requirements for conductor
fasteners (IEC 62561-4)
EN 62561-6, Lightning protection system components (LPSC) - Part 6: Requirements for lightning strike
counters (LSC) (IEC 62561-6)
EN IEC 60079-0:2018, Explosive atmospheres - Part 0: Equipment - General requirements
(IEC 60079-0:2018)
EN ISO 6988:1994, Metallic and other non-organic coatings - Sulfur dioxide test with general
condensation of moisture (ISO 6988:1985)
ISO 6957:1988, Copper alloys — Ammonia test for stress corrosion resistance
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at http://www.electropedia.org/
— ISO Online browsing platform: available at https://www.iso.org/obp
3.1
Ex-LPSC
lightning protection system component suitable of being used in explosive atmosphere, such as
connection components, conductors, isolating spark gaps, conductor’s fasteners, lightning strike
counters
3.2
ignition safety
non-ignition of an explosive atmosphere
3.3
explosive mixture
specified explosive mixture used for the testing of electrical equipment for explosive gas atmospheres
(see EN IEC 60079-0:2018)
3.4
threshold current
maximum lightning current without ignition of the explosive atmosphere
3.5
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 made, 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.
3.6
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 components include connectors, clamps, bridging components, expansion pieces
and test joints.
3.7
conductor
part of an external LPS which is intended to intercept to conduct and to disperse lightning current to the earth
Note 1 to entry: Conductors include air-termination conductors or rods, down conductors and earth conductors.
3.8
isolating spark gap
component with discharge distance for isolating electrically conductive installation sections
Note 1 to entry: In the event of a lightning strike, the installation sections are temporarily connected conductively
as the result of response of the discharge.
3.9
conductor fastener
metallic, non-metallic or composite component designed to retain and support the air termination and down
conductor, installed at intervals along the length of the conductors
3.10
lightning strike counter
device intended to count the num
...