EN IEC 60331-1:2019

SLOVENSKI STANDARD
01-november-2019
Nadomešča:
SIST EN 50362:2004
Preskusi požarne odpornosti električnih kablov - Celovitost tokokroga - 1. del:
Metoda preskušanja požarne odpornosti s temperaturnim udarom vsaj 830 °C za
kable z naznačeno napetostjo do vključno 0,6/1,0 kV in zunanjim premerom,
večjim od 20 mm (IEC 60331-1:2018)
Tests for electric cables under fire conditions - Circuit integrity - Part 1: Test method for
fire with shock at a temperature of at least 830°C for cables of rated voltage up to and
including 0,6/1,0 kV and with an overall diameter exceeding 20 mm (IEC 60331-1:2018)
Prüfungen an Kabeln und isolierten Leitungen im Brandfall - Isolationserhalt - Teil 1:
Prüfverfahren für Brand mit Erschütterung bei einer Temperatur von mindestens 830 °C
für Kabel und isolierte Leitungen mit einer Nennspannung bis einschließlich 0,6/1,0 kV
und einem Außendurchmesser größer 20 mm (IEC 60331-1:2018)
Essais pour câbles électriques soumis au feu - Intégrité des circuits - Partie 1: Méthode
d’essai au feu avec chocs pour les câbles de tension assignée au plus égale à 0,6/1,0
kV et de diamètre externe supérieur à 20 mm, à une température d’au moins 830 °C
(IEC 60331-1:2018)
Ta slovenski standard je istoveten z: EN IEC 60331-1:2019
ICS:
13.220.40 Sposobnost vžiga in Ignitability and burning
obnašanje materialov in behaviour of materials and
proizvodov pri gorenju products
29.060.20 Kabli Cables
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN IEC 60331-1

NORME EUROPÉENNE
EUROPÄISCHE NORM
August 2019
ICS 13.220.40; 29.020; 29.060.20 Supersedes EN 50362:2003 and all of its amendments
and corrigenda (if any)
English Version
Tests for electric cables under fire conditions - Circuit integrity -
Part 1: Test method for fire with shock at a temperature of at
least 830°C for cables of rated voltage up to and including
0,6/1,0 kV and with an overall diameter exceeding 20 mm
(IEC 60331-1:2018)
Essais pour câbles électriques soumis au feu - Intégrité des Prüfungen an Kabeln und isolierten Leitungen im Brandfall -
circuits - Partie 1: Méthode d'essai au feu avec chocs pour Isolationserhalt - Teil 1: Prüfverfahren für Brand mit
les câbles de tension assignée au plus égale à 0,6/1,0 kV et Erschütterung bei einer Temperatur von mindestens 830 °C
de diamètre externe supérieur à 20 mm, à une température für Kabel und isolierte Leitungen mit einer Nennspannung
d'au moins 830 °C bis einschließlich 0,6/1,0 kV und einem Außendurchmesser
(IEC 60331-1:2018) größer 20 mm
(IEC 60331-1:2018)
This European Standard was approved by CENELEC on 2019-07-19. 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 CEN-CENELEC
Management Centre 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 CEN-CENELEC Management Centre 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, 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
© 2019 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 60331-1:2019 E

European foreword
This document (EN IEC 60331-1:2019) consists of the text of document IEC 60331-1:2018, prepared
by IEC/TC 20 "Electric cables"
The following dates are fixed:
• latest date by which this document has to be (dop) 2020-07-19
implemented at national level by publication of an
identical national standard or by endorsement
• latest date by which the national standards (dow) 2022-07-19
conflicting with this document have to be withdrawn
This document supersedes EN 50362:2003 and all of its amendments and corrigenda (if any).
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.
Endorsement notice
The text of the International Standard IEC 60331-1:2018 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following note has to be added for the standard indicated:
IEC 61034-1 NOTE  Harmonized as EN 61034-1 (not modified).

Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

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.
NOTE 1 When an International Publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available here:
www.cenelec.eu.
Publication Year Title EN/HD Year
IEC 60269-3 -  Low-voltage fuses - Part 3: Supplementary HD 60269-3 -
requirements for fuses for use by unskilled
persons (fuses mainly for household or
similar applications) - Examples of
standardized systems of fuses A to F
IEC 60584-1 -  Thermocouples - Part 1: EMF EN 60584-1 -
specifications and tolerances
IEC 60331-1 ®
Edition 2.0 2018-03
INTERNATIONAL
STANDARD
GROUP SAFETY PUBLICATION
Tests for electric cables under fire conditions – Circuit integrity –

Part 1: Test method for fire with shock at a temperature of at least 830 °C for

cables of rated voltage up to and including 0,6/1,0 kV and with an overall

diameter exceeding 20 mm
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 13.220.40; 29.020; 29.060.20 ISBN 978-2-8322-5489-9

– 2 – IEC 60331-1:2018 © IEC 2018
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 8
4 Test environment . 8
5 Test apparatus . 8
5.1 Test equipment . 8
5.2 Test ladder and mounting . 12
5.3 Source of heat . 13
5.3.1 Burner . 13
5.3.2 Flow meters and flow rates . 14
5.3.3 Verification . 15
5.4 Shock producing device . 15
5.5 Positioning of source of heat . 16
5.6 Continuity checking arrangements for electric power and control cables with
rated voltage up to and including 600 V/1 000 V . 16
5.7 Fuses. 16
6 Test specimen (electric power and control cables with rated voltage up to and
including 600 V/1 000 V) . 16
6.1 Test specimen preparation . 16
6.2 Test specimen mounting . 17
6.2.1 Single core cables with concentric metal layer and multicore cables . 17
6.2.2 Single core cables without concentric metal layer . 19
7 Test procedure (electric power and control cables with rated voltage up to and
including 600 V/1 000 V) . 20
7.1 Test equipment and arrangement . 20
7.2 Electrical connections . 20
7.3 Flame and shock application . 22
7.4 Electrification . 22
8 Performance requirements (electric power and control cables with rated voltage
up to and including 600/1 000 V) . 23
8.1 Flame application time . 23
8.2 Acceptance criteria . 23
9 Retest procedure . 23
10 Test report (electric power and control cables with rated voltage up to and
including 600 V/1 000 V) . 23
11 Cable marking . 23
Annex A (normative) Verification procedure for the source of heat . 24
A.1 Measuring equipment . 24
A.2 Procedure . 24
A.3 Evaluation . 25
A.4 Further verification . 25
A.5 Verification report . 25
Annex B (informative) Guidance on the choice of recommended test apparatus (burner
and venturi) . 26

IEC 60331-1:2018 © IEC 2018 – 3 –
Bibliography . 27

Figure 1 – Schematic diagram of test configuration . 10
Figure 2 – Plan view of fire test equipment . 11
Figure 3 – End elevation of fire test equipment (not to scale) . 12
Figure 4 – Typical rubber bush for supporting the test ladder . 13
Figure 5 – Burner face . 14
Figure 6 – Schematic diagram of an example of a burner control system . 15
Figure 7 – Example of method of mounting a larger diameter test specimen for test
(with a bending radius between approximately 200 and 400 mm) . 17
Figure 8 – Detailed section of adjustable position of vertical ladder elements for
mounting a smaller diameter test specimen for test (with a maximum bending radius of
approximately 200 mm) . 18
Figure 9 – Example of method of mounting test specimen with a bending radius in
normal use larger than approximately 400 mm . 19
Figure 10 – Method of mounting test specimen of a sing
...