IEC 60332-1-2:2025
(Main)Tests on electric and optical fibre cables under fire conditions - Part 1-2: Test for vertical flame propagation for a single insulated wire or cable - Procedure for 1 kW pre-mixed flame
Tests on electric and optical fibre cables under fire conditions - Part 1-2: Test for vertical flame propagation for a single insulated wire or cable - Procedure for 1 kW pre-mixed flame
IEC 60332‑1‑2:2025 specifies the procedure for testing the resistance to vertical flame propagation for a single vertical electrical insulated conductor or cable, or optical fibre cable, under fire conditions using a 1 kW pre-mixed flame. The apparatus is described in IEC 60332‑1‑1.
NOTE 1 Testing to IEC 60332‑1‑2 can be performed simultaneously with that to IEC 60332‑1‑3, if required.
This group safety publication focusing on test method(s) is primarily intended to be used as a product safety standard for the products mentioned in the scope, but is also intended to be used by technical committees in the preparation of standards for products similar to those mentioned in the scope of this group safety publication, in accordance with the principles laid down in IEC Guide 104 and lSO/lEC Guide 51.
NOTE 2 The performing of this test method on a single insulated conductor or cable or optical fibre cable does not provide compliance with fire propagation requirements in relevant standards in the case that the single insulated conductor or cable or optical fibre cable is installed with or amongst other cables as a group. (See the IEC 60332‑3 series).
One of the responsibilities of a technical committee is, wherever applicable, to make use of basic safety publications and/or group safety publications in the preparation of its publications.
Essais des câbles électriques et à fibres optiques soumis au feu - Partie 1-2: Essai de propagation verticale de la flamme sur conducteur ou câble isolé - Procédure pour flamme à prémélange de 1 kW
La CEI 60332-1-2:2025 spécifie la procédure d'essai de la résistance à la propagation verticale de la flamme pour un conducteur ou câble isolé électrique vertical unique, ou un câble à fibres optiques, dans des conditions d'incendie en utilisant une flamme prémélangée de 1 kW. L'appareillage est décrit dans la CEI 60332-1-1.
NOTE 1 Les essais selon la CEI 60332-1-2 peuvent être effectués simultanément avec ceux selon la CEI 60332-1-3, si nécessaire.
La présente publication de sécurité de groupe axée sur la (les) méthode(s) d'essai est principalement destinée à être utilisée comme norme de sécurité pour les produits mentionnés dans le domaine d'application, mais elle est également destinée à être utilisée par les comités d'études dans la préparation de normes pour des produits similaires à ceux mentionnés dans le domaine d'application de la présente publication de sécurité de groupe, conformément aux principes énoncés dans le Guide 104 de la CEI et le Guide 51 de l'ISO/CEI.
NOTE 2 L'application de cette méthode d'essai à un conducteur ou câble isolé ou à un câble à fibres optiques n'assure pas la conformité aux exigences de propagation du feu des normes pertinentes dans le cas où le conducteur ou câble isolé ou le câble à fibres optiques est installé avec ou parmi d'autres câbles en tant que groupe. (Voir la série IEC 60332-3).
L'une des responsabilités d'un comité d'études est, le cas échéant, d'utiliser les publications sur la sécurité de base et/ou les publications sur la sécurité de groupe dans la préparation de ses publications.
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Standards Content (Sample)
IEC 60332-1-2 ®
Edition 2.0 2025-06
INTERNATIONAL
STANDARD
Tests on electric and optical fibre cables under fire conditions –
Part 1-2: Test for vertical flame propagation for a single insulated wire or cable –
Procedure for 1 kW pre-mixed flame
ICS 13.220.40; 29.020; 29.060.20 ISBN 978-2-8327-0430-1
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– 2 – IEC 60332-1-2:2025 © IEC 2025
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Test apparatus . 6
5 Procedure . 6
5.1 Sample . 6
5.2 Conditioning . 6
5.3 Positioning of test piece . 6
5.4 Flame application . 7
5.4.1 Safety warning . 7
5.4.2 Positioning of flame . 7
5.4.3 Test duration . 7
6 Evaluation of test results . 8
7 Performance requirements. 8
Annex A (normative) Performance requirements . 11
Bibliography . 12
Figure 1 – Arrangement of test piece in test apparatus . 9
Figure 2 – Application of flame to test piece . 10
Table 1 – Time for flame application . 8
Table A.1 – Performance requirements . 11
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
TESTS ON ELECTRIC AND OPTICAL FIBRE CABLES
UNDER FIRE CONDITIONS –
Part 1-2: Test for vertical flame propagation for a single insulated wire
or cable – Procedure for 1 kW pre-mixed flame
FOREWORD
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shall not be held responsible for identifying any or all such patent rights.
IEC 60332-1-2 has been prepared by IEC technical committee 20: Electric cables. It is an
International Standard.
This second edition cancels and replaces the first edition published in 2004 and
Amendment 1:2015. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) modification in positioning of test pieces, which move out of the flame (5.3);
b) addition of performance requirements (Annex A).
– 4 – IEC 60332-1-2:2025 © IEC 2025
The text of this International Standard is based on the following documents:
Draft Report on voting
20/2232/FDIS 20/2244/RVD
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this International Standard is English.
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/publications.
This document has the status of a group safety publication in accordance with IEC Guide 104.
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.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under webstore.iec.ch in the data related to the
specific document. At this date, the document will be
• reconfirmed,
• withdrawn, or
• revised.
TESTS ON ELECTRIC AND OPTICAL FIBRE CABLES
UNDER FIRE CONDITIONS –
Part 1-2: Test for vertical flame propagation for a single insulated wire
or cable – Procedure for 1 kW pre-mixed flame
1 Scope
This part of IEC 60332 specifies the procedure for testing the resistance to vertical flame
propagation for a single vertical electric insulated conductor or cable, or optical fibre cable,
under fire conditions using a 1 kW pre-mixed flame. The apparatus is described in
IEC 60332-1-1.
NOTE 1 Testing to IEC 60332-1-2 can be performed simultaneously with that to IEC 60332-1-3, if required.
This group safety publication focusing on test method(s) is primarily intended to be used as a
product safety standard for the products mentioned in the scope, but is also intended to be used
by technical committees in the preparation of standards for products similar to those mentioned
in the scope of this group safety publication, in accordance with the principles laid down in
IEC Guide 104 and lSO/lEC Guide 51.
NOTE 2 The performing of this test method on a single insulated conductor or cable or optical fibre cable does not
provide compliance with fire propagation requirements in relevant standards in the case that the single insulated
conductor or cable or optical fibre cable is installed with or amongst other cables as a group. (See the IEC 60332-3
series).
One of the responsibilities of a technical committee is, wherever applicable, to make use of
basic safety publications and/or group safety publications in the preparation of its publications.
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.
IEC 60332-1-1, Tests on electric and optical fibre cables under fire conditions – Part 1-1: Test
for vertical flame propagation for a single insulated wire or cable – Apparatus
IEC 60811-203, Electric and optical fibre cables – Test methods for non-metallic materials –
Part 203: General tests – Measurement of overall dimensions
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminology databases for use in standardization at the following
addresses:
• IEC Electropedia: available at https://www.electropedia.org/
• ISO Online browsing platform: available at https://www.iso.org/obp
– 6 – IEC 60332-1-2:2025 © IEC 2025
3.1
char, noun
carbonaceous residue resulting from pyrolysis or incomplete combustion
[SOURCE: ISO 13943:2023, 3.53]
4 Test apparatus
The apparatus specified in IEC 60332-1-1 shall be used.
5 Procedure
5.1 Sample
The test sample shall be a piece of single insulated conductor or cable (600 ± 25) mm long.
The test sample diameter shall be measured using the method given in IEC 60811-203. The
measurement shall be made at each of three places, separated by at least 100 mm.
The average of the three values obtained shall be rounded to obtain the overall diameter. If the
calculation gives 5 or more for the second decimal figure, raise the first to the next number;
thus, for example, 5,75 is rounded to 5,8
...
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