EN IEC 60332-3-25:2018

Tests on electric and optical fibre cables under fire conditions - Part 3-25: Test for vertical flame spread of vertically-mounted bunched wires or cables - Category D

NEW!IEC 60332-3-25:2018 is available as IEC 60332-3-25:2018 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 60332-2-25:2018 covers category D for methods of test for the assessment of vertical flame spread of vertically mounted bunched wires or cables, electrical or optical, under defined conditions. This document relates only to small cables of overall diameter 12 mm or smaller and cross-section of 35 mm2 or smaller installed on the test ladder to achieve a nominal total volume of non-metallic material of 0,5 l/m of test sample. The flame application time is 20 min. The method of mounting uses the front of the standard ladder in touching formation only. The category is intended for use with small cables where very low volumes of non-metallic material are required to be evaluated. The test is intended for type approval testing. The requirements for the selection of cables for testing are given in Annex A. The flame spread is measured as the extent of damage of the cable sample. This procedure can be used to demonstrate the cable’s ability to limit flame spread. A recommended performance requirement is given in Annex B. This second edition cancels and replaces the first edition published in 2000 and Amendment 1:2008. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) all pre-existing categories of test have been retained and updated; b) a new category (category D) has been added to cater for testing at very low non-metallic volumes. It has the status of a group safety publication in accordance with IEC Guide 104.

Prüfungen an Kabeln, isolierten Leitungen und Glasfaserkabeln im Brandfall - Teil 3-25: Prüfung der Flammenausbreitung von vertikal angeordneten Bündeln von Kabeln und isolierten Leitungen - Prüfart D

Essais des câbles électriques et des câbles à fibres optiques soumis au feu - Partie 3-25: Essai de propagation verticale de la flamme des fils ou câbles montés en nappes en position verticale - Catégorie D

NEW!IEC 60332-3-25:2018 est disponible sous forme de IEC 60332-3-25:2018 RLV qui contient la Norme internationale et sa version Redline, illustrant les modifications du contenu technique depuis l'édition précédente.L’IEC 60332-2-25:2018 couvre la catégorie D pour les méthodes d'essai pour l'évaluation de la propagation verticale de la flamme des fils ou câbles, électriques ou optiques, disposés en nappes en position verticale, dans des conditions définie. Le présent document ne concerne que les petits câbles de diamètre extérieur inférieur ou égal à 12 mm et de section inférieure ou égale à 35 mm2 montés sur l’échelle d’essai afin d’obtenir un volume total nominal de matériau non métallique de 0,5 l/m d’échantillon d’essai. La durée d'application de la flamme est de 20 min. La méthode de montage utilise la face avant de l'échelle standard en disposition jointive uniquement. Cette catégorie est prévue pour une utilisation avec des petits câbles lorsqu’il est requis d'évaluer le comportement de volumes très faibles de matériau non métallique. L'essai est prévu pour les essais d'acceptation de type. Les exigences pour la sélection des câbles pour l'acceptation de type sont données à l'Annexe A. La propagation de la flamme est mesurée comme étant l'étendue de la partie endommagée de l'échantillon de câble. Cette procédure peut être utilisée pour démontrer l’aptitude du câble à limiter la propagation de la flamme. L’Annexe B donne une recommandation pour l'exigence de performance. Cette deuxième édition annule et remplace la première édition parue en 2000 et l'Amendement 1:2008. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente: a) toutes les catégories déjà existantes de l’essai ont été retenues et mises à jour; b) une nouvelle catégorie (catégorie D) a été rajoutée afin de satisfaire aux besoins d’essai avec des volumes de matériaux non métalliques très faibles. Elle a le statut d’une publication groupée de sécurité conformément au Guide IEC 104.

Preskusi na električnih kablih in kablih iz optičnih vlaken v požarnih razmerah - 3-25. del: Preskus navpičnega širjenja ognja po navpično pritrjenih snopih žic ali kablov - Kategorija D (IEC 60332-3-25:2018)

Ta del standarda IEC 60332 zajema kategorijo D za preskusne metode za ocenjevanje navpičnega širjenja ognja po navpično pritrjenih snopih žic ali kablov, električnih ali iz optičnih vlaken, v določenih razmerah.
Ta dokument se nanaša samo na majhne kable s skupnim premerom največ 12 mm in prerezom največ 35 mm2, nameščene na preskusni lestvi, da se doseže skupna nazivna prostornina nekovinskih materialov 0,5 l/m preskusnega vzorca. Čas uporabe ognja je 20 minut. Način montaže uporablja sprednji del standardne lestve samo v stični sestavi. Kategorija je namenjena za uporabo z majhnimi kabli, pri kateri je treba oceniti zelo majhne prostornine nekovinskih materialov.
Preskus je namenjen za homologacijsko preskušanje. Zahteve za izbiro kablov za preskušanje so podane v dodatku A. Širjenje ognja se izmeri kot obseg škode na vzorcu kabla. Ta postopek je mogoče uporabiti za prikaz zmožnosti kabla za omejitev širjenja ognja.
Priporočena zahteva glede učinkovitosti je podana v dodatku B.
OPOMBA: Za namene tega dokumenta izraz »električna žica ali kabel« zajema vse izolirane kovinske vodnike, ki se uporabljajo za prenos energije ali signalov.

General Information

• Status: Published
• Publication Date: 11-Oct-2018
• ICS: 13.220.40 - Ignitability and burning behaviour of materials and products
• ICS: 29.020 - Electrical engineering in general
• ICS: 29.060.20 - Cables
• Technical Committee: CLC/TC 20 - Electric cables
• Drafting Committee: IEC/TC 20 - IEC_TC_20
• Current Stage: 6060 - Document made available - Publishing
• Start Date: 12-Oct-2018
• Completion Date: 12-Oct-2018
• Directive: 2014/35/EU - Directive 2014/35/EU of the European Parliament and of the Council of 26 February 2014 on the harmonisation of the laws of the Member States relating to the making available on the market of electrical equipment designed for use within certain voltage limits
• Ref Project: SIST EN IEC 60332-3-25:2018 - Tests on electric and optical fibre cables under fire conditions - Part 3-25: Test for vertical flame spread of vertically-mounted bunched wires or cables - Category D (IEC 60332-3-25:2018)

Relations

• Replaces: EN 60332-3-25:2009 - Tests on electric and optical fibre cables under fire conditions - Part 3-25: Test for vertical flame spread of vertically-mounted bunched wires or cables - Category D
• Effective Date: 16-Oct-2018

Overview

EN IEC 60332-3-25:2018 specifies a standardized fire test for the vertical flame spread of vertically-mounted bunched wires or cables - Category D. It is part of the IEC 60332 series on tests of electric and optical fibre cables under fire conditions and is published by CLC as a group safety publication. This second edition (2018) replaces the 2000 edition and 2008 amendment and adds Category D for very low non-metallic volumes.

Key topics and requirements

• Scope: Applies to small electrical and optical fibre cables with overall diameter ≤ 12 mm and conductor cross-section ≤ 35 mm².
• Test configuration: Cables are mounted in touching formation on the front of the standard test ladder to achieve a nominal total volume of 0.5 l/m of non-metallic material in the test sample.
• Flame application: A defined ignition source is applied for 20 minutes to assess vertical flame spread.
• Measurement: Flame spread is evaluated by the extent of damage to the sample (i.e., how far flame or degradation propagates).
• Purpose: Intended primarily for type approval testing where very low volumes of combustible cable materials must be evaluated.
• Supporting guidance: Annex A provides guidance on cable selection for type approval; Annex B gives recommended performance requirements.
• Reproducibility: The updated edition improves mounting details to enhance test repeatability and reproducibility.

Applications and who uses it

EN IEC 60332-3-25:2018 is used by:

• Cable manufacturers for product development and type approval.
• Independent test laboratories conducting fire-performance testing.
• Certification bodies and compliance engineers assessing cables for safety approvals.
• Specifiers and procurement teams writing fire-safety requirements for electrical and optical cabling.
• Fire safety and system engineers evaluating cable performance in installations where low combustible volume and vertical flame spread are critical.

Typical application areas include building services, industrial installations, transportation and wherever vertical bundles of small-diameter cables might be exposed to fire.

Related standards

• EN/IEC 60332-3-10 (apparatus for vertical flame spread tests)
• Parts EN/IEC 60332-3-21 to -3-24 (other category test methods)
• IEC 60811-606 (tests for non-metallic cable materials)
• ISO 13943 (fire safety vocabulary - bibliographic reference)

EN IEC 60332-3-25:2018 provides a focused, reproducible method to demonstrate a cable’s ability to limit vertical flame spread in low-volume cable bundles - essential for type approval, safety assessments and regulatory compliance.

Standards Content (Sample)

SLOVENSKI STANDARD
01-december-2018
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SIST EN 60332-3-25:2010
3UHVNXVLQDHOHNWULþQLKNDEOLKLQNDEOLKL]RSWLþQLKYODNHQYSRåDUQLKUD]PHUDK
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Tests on electric and optical fibre cables under fire conditions - Part 3-25: Test for
vertical flame spread of vertically-mounted bunched wires or cables - Category D (IEC
60332-3-25:2018)
Prüfungen an Kabeln, isolierten Leitungen und Glasfaserkabeln im Brandfall - Teil 3-25:
Prüfung der Flammenausbreitung von vertikal angeordneten Bündeln von Kabeln und
isolierten Leitungen - Prüfart D (IEC 60332-3-25:2018)
Essais des câbles électriques et des câbles à fibres optiques soumis au feu - Partie 3-
25: Essai de propagation verticale de la flamme des fils ou câbles montés en nappes en
position verticale - Catégorie D (IEC 60332-3-25:2018)
Ta slovenski standard je istoveten z: EN IEC 60332-3-25:2018
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 60332-3-25

NORME EUROPÉENNE
EUROPÄISCHE NORM
October 2018
ICS 13.220.40; 29.020; 29.060.20 Supersedes EN 60332-3-25:2009
English Version
Tests on electric and optical fibre cables under fire conditions -
Part 3-25: Test for vertical flame spread of vertically-mounted
bunched wires or cables - Category D
(IEC 60332-3-25:2018)
Essais des câbles électriques et des câbles à fibres Prüfungen an Kabeln, isolierten Leitungen und
optiques soumis au feu - Partie 3-25: Essai de propagation Glasfaserkabeln im Brandfall - Teil 3-25: Prüfung der
verticale de la flamme des fils ou câbles montés en nappes Flammenausbreitung von vertikal angeordneten Bündeln
en position verticale - Catégorie D von Kabeln und isolierten Leitungen - Prüfart D
(IEC 60332-3-25:2018) (IEC 60332-3-25:2018)
This European Standard was approved by CENELEC on 2018-08-17. 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, 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
© 2018 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 60332-3-25:2018 E

European foreword
The text of document 20/1802/FDIS, future edition 2 of IEC 60332-3-25, prepared by IEC/TC 20
"Electric cables" was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2019-05-17
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2021-08-17
document have to be withdrawn
This document supersedes EN 60332-3-25:2009.
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 60332-3-25:2018 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:
ISO 13943:2017 NOTE Harmonized as EN ISO 13943:2017 (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  Where 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 60332-3-10 -  Tests on electric and optical fibre cables EN IEC 60332-3-10 -
under fire conditions - Part 3-10: Test for
vertical flame spread of vertically-mounted
bunched wires or cables - Apparatus
IEC 60811-606 -  Electric and optical fibre cables - Test EN 60811-606 -
methods for non-metallic materials - Part
606: Physical tests - Methods for
determining the density
IEC 60332-3-25 ®
Edition 2.0 2018-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
GROUP SAFETY PUBLICATION
PUBLICATION GROUPÉE DE SÉCURITÉ

Tests on electric and optical fibre cables under fire conditions –

Part 3-25: Test for vertical flame spread of vertically-mounted bunched wires or

cables – Category D
Essais des câbles électriques et des câbles à fibres optiques soumis au feu –

Partie 3-25: Essai de propagation verticale de la flamme des fils ou câbles

montés en nappes en position verticale – Catégorie D

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 13.220.40; 29.060.20 ISBN 978-2-8322-5794-4

– 2 – IEC 60332-3-25:2018 © IEC 2018
CONTENTS
FOREWORD .3
INTRODUCTION .5
1 Scope .6
2 Normative references .6
3 Terms and definitions .6
4 Test apparatus .7
4.1 General .7
4.2 Ignition source .7
5 Test procedure .7
5.1 Test sample .7
5.2 Determination of the number of test pieces .7
5.3 Mounting of the test sample .8
5.4 Flame application time .9
6 Evaluation of test results .9
7 Performance requirements .9
8 Retest procedure .9
9 Test report .9
Annex A (normative) Guidance on cable selection for type approval testing . 11
Annex B (informative) Recommended performance requirements . 12
Bibliography . 13

Figure 1 – Touching cables mounted on the front side of the standard ladder (arrays of
cables in contact) . 10

Table A.1 – Summary of test conditions . 11

IEC 60332-3-25:2018 © IEC 2018 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
___________
TESTS ON ELECTRIC AND OPTICAL FIBRE
CABLES UNDER FIRE CONDITIONS –

Part 3-25: Test for vertical flame spread of
vertically-mounted bunched wires or cables – Category D

FOREWORD
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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 60332-3-25 has been prepared by IEC technical committee 20:
Electric cables.
This second edition cancels and replaces the first edition published in 2000 and
Amendment 1:2008. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) adjustments have been made to the title, and elsewhere, to emphasise the standard is
applicable to optical fibre cables as well as metallic conductor types;
b) details of the way in which cables are mounted on the ladder have been better defined in
order to improve repeatability and reproducibility.

– 4 – IEC 60332-3-25:2018 © IEC 2018
It has the status of a group safety publication in accordance with IEC Guide 104.
The text of this International Standard is based on the following documents:
FDIS Report on voting
20/1802/FDIS 20/1819/RVD
Full information on the voting for the approval of this International Standard can be found in
the report on voting indicated in the above table.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts in the IEC 60332 series, published under the general title Tests on electric
and optical fibre cables under fire conditions, can be found on the IEC website.
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