IEC 60695-9-2:2021

Fire hazard testing - Part 9-2: Surface spread of flame - Summary and relevance of test methods

IEC 60695-9-2:2021 presents a summary of published test methods that are used to determine the surface spread of flame of electrotechnical products or materials from which they are formed.
It represents the current state of the art of the test methods and, where available, includes special observations on their relevance and use.
The list of test methods is not to be considered exhaustive, and test methods that were not developed by the IEC are not to be considered as endorsed by the IEC unless this is specifically stated.
This summary cannot be used in place of published standards which are the only valid reference documents.
This basic safety publication is intended for use by technical committees in the preparation of standards in accordance with the principles laid down in IEC Guide 104 and
ISO/IEC Guide 51.
One of the responsibilities of a technical committee is, wherever applicable, to make use of basic safety publications in the preparation of its publications. The requirements, test methods or test conditions of this basic safety publication will not apply unless specifically referred to or included in the relevant publications.
This International Standard is to be used in conjunction with IEC 60695-1.
This second edition cancels and replaces the first edition of IEC 60695-9-2 published in 2014. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) Updated introduction
b) Updated normative references
c) Updated terms and definitions
d) New Subclauses 4.1 and 4.2
e) Reference to fire stages as defined in ISO 19706 (Table 1)
f) New sub-division of tests into the following subclauses:
4.3 Small-scale fire tests
4.4 Medium and intermediate-scale fire tests
4.5 Intermediate and large-scale fire tests for cables
4.6 Real-scale fire tests for cables
g) Updated text in parts of Clause 4
h) Addition of the following test methods:
IEC TS 60695-11-21
IEC 60684-2:2011, Clause 26
ISO 3582
ISO 9772
ISO 9773
ISO 12992
ISO 21367
i) New Clause 5 and Table 4 giving an overview of test methods
j) Deletion of all the Annexes
k) Updated bibliography

Essais relatifs aux risques du feu - Partie 9-2: Propagation des flammes en surface - Résumé et pertinence des méthodes d'essai

IEC 60695-9-2:2021 propose un résumé des méthodes d'essai publiées utilisées pour déterminer la propagation de flamme en surface des produits électrotechniques ou des matériaux dont ils sont constitués.
Elle représente l'état actuel de l'art des méthodes d'essai et, le cas échéant, elle comprend des observations particulières sur leur pertinence et leur utilisation.
La liste des méthodes d’essai ne doit pas être considérée comme exhaustive, et les méthodes d'essai qui n'ont pas été élaborées par l’IEC ne doivent pas être considérées comme étant entérinées par l’IEC, sauf si cela est spécifiquement stipulé.
Ce résumé ne peut pas se substituer aux normes publiées, qui sont les seuls documents de référence valables.
Cette publication fondamentale de sécurité est destinée à être utilisée par les comités d’études pour l’établissement de leurs normes, conformément aux principes exposés dans le Guide IEC 104 et dans le Guide ISO/IEC 51.
L'une des responsabilités d'un comité d'études consiste, le cas échéant, à utiliser les publications fondamentales de sécurité dans le cadre de l'élaboration de ses publications. Les exigences, les méthodes d'essai ou les conditions d'essai indiquées dans la présente publication fondamentale de sécurité ne s'appliquent que si elles sont référencées ou incluses dans les publications appropriées.
Cette Norme internationale doit être utilisée conjointement avec l’IEC 60695-9-1.
Cette deuxième édition annule et remplace la première édition de l’IEC 60695-9-2 parue en 2014. Cette édition constitue une révision technique.
Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
a) Mise à jour de l’introduction
b) Mise à jour des références normatives
c) Mise à jour des termes et définitions
d) Nouveaux Paragraphes 4.1 et 4.2
e) Référence aux stades d’incendie tels qu'ils sont définis dans l’ISO 19706 (Tableau 1)
f) Nouvelle répartition des essais dans les paragraphes suivants:
4.3 Essais au feu à petite échelle
4.4 Essais au feu à échelles moyenne et intermédiaire
4.5 Essais au feu à échelle intermédiaire et à grande échelle pour les câbles
4.6 Essais au feu en grandeur réelle pour les câbles
g) Mise à jour du texte de certaines parties de l’Article 4
h) Ajout des méthodes d'essai suivantes:
IEC TS 60695-11-21
IEC 60684-2:2011, Article 26
ISO 3582
ISO 9772
ISO 9773
ISO 12992
ISO 21367
i) Nouvel Article 5 et nouveau Tableau 4 qui donnent une vue générale des méthodes d'essai
j) Suppression de toutes les Annexes
k) Mise à jour de la bibliographie

General Information

• Status: Published
• Publication Date: 24-Aug-2021
• ICS: 13.220.40 - Ignitability and burning behaviour of materials and products
• ICS: 29.020 - Electrical engineering in general
• Technical Committee: TC 89 - Fire hazard testing
• Drafting Committee: WG 11 - TC 89/WG 11
• Current Stage: PPUB - Publication issued
• Start Date: 12-Aug-2021
• Completion Date: 25-Aug-2021

Relations

• Revises: IEC TS 60695-9-2:2005 - Fire hazard testing - Part 9-2: Surface spread of flame - Summary and relevance of test methods
• Effective Date: 05-Sep-2023
• Revises: IEC 60695-9-2:2014 - Fire hazard testing - Part 9-2: Surface spread of flame - Summary and relevance of test methods
• Effective Date: 05-Sep-2023
• Revises: IEC TS 60695-9-2:2001 - Fire hazard testing - Part 9-2: Surface spread of flame - Summary and relevance of test methods
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 60695-9-2 ®
Edition 2.0 2021-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
HORIZONTAL PUBLICATION
PUBLICATION HORIZONTALE
Fire hazard testing –
Part 9-2: Surface spread of flame – Summary and relevance of test methods

Essais relatifs aux risques du feu –
Partie 9-2: Propagation des flammes en surface – Résumé et pertinence
des méthodes d'essai
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IEC 60695-9-2 ®
Edition 2.0 2021-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
HORIZONTAL PUBLICATION
PUBLICATION HORIZONTALE
Fire hazard testing –
Part 9-2: Surface spread of flame – Summary and relevance of test methods

Essais relatifs aux risques du feu –

Partie 9-2: Propagation des flammes en surface – Résumé et pertinence

des méthodes d'essai
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 13.220.40; 29.020 ISBN 978-2-8322-9997-5

– 2 – IEC 60695-9-2:2021 © IEC 2021
CONTENTS
FOREWORD . 3
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 8
4 Summary of published test methods . 12
4.1 General . 12
4.2 The physical fire model . 12
4.3 Small-scale fire tests. 14
4.3.1 Horizontal and vertical 50 W and 500 W flame tests – IEC 60695-11-10
and IEC 60695-11-20 . 14
4.3.2 Fire hazard testing – Part 11-21: Test flames – 500 W vertical flame
test method for tubular polymeric materials – IEC TS 60695-11-21 [5] . 14
4.3.3 Flexible insulating sleeving – Part 2: Methods of test, Clause 26: Flame
propagation tests – IEC 60684-2:2011 [7], Clause 26 . 15
4.3.4 Vertical burning test for cables – IEC 60332-1 [9] . 16
4.3.5 Vertical burning test for cables – IEC 60332-2 [10] . 17
4.3.6 Flexible cellular polymeric materials – Laboratory assessment of horizontal
burning characteristics of small specimens subjected to a small flame –
ISO 3582 [11] . 18
4.3.7 Horizontal burning rate for road vehicle materials – ISO 3795 [12]. . 19
4.3.8 Cellular plastics – Determination of horizontal burning characteristics of
small specimens subjected to a small flame – ISO 9772 [13] . 19
4.3.9 Plastics – Determination of burning behaviour of thin flexible vertical
specimens in contact with a small-flame ignition source – ISO 9773 [15] . 20
4.3.10 Fire propagation apparatus – ISO 12136 [16] . 21
4.3.11 Plastics – Vertical flame spread determination for film and sheet –
ISO 12992 [27] . 23
4.3.12 Vertical burning test for aircraft materials – FAR 25 [29] . 23
4.4 Medium and intermediate-scale fire tests . 24
4.4.1 Lateral flame spread on building and transport products – ISO 5658-2 [30] . 24
4.4.2 Intermediate-scale fire test of vertical flame spread – ISO 5658-4 [33]. 25
4.4.3 Plastics – Reaction to fire – Test method for flame spread and combustion
product release from vertically oriented specimens – ISO 21367 [35] . 26
4.5 Intermediate and large-scale fire tests for cables . 26
4.5.1 General . 26
4.5.2 Vertical burning tests for cables (ladder tests) . 27
4.5.3 Vertical burning test for cables – NF C 32-070 [60] . 31
4.6 Real-scale fire tests for cables . 31
4.6.1 Standard for test for flame propagation height of electrical and optical-
fiber cables installed vertically in shafts – UL 1666 [61] . 31
4.6.2 Horizontal flame spread test for cables – EN 50289-4-11 [62] . 32
5 Overview of methods and relevance of data . 33
Bibliography . 38

Table 1 – Characteristics of fire stages (ISO 19706:2011) . 13
a)
Table 2 – Summary and comparison of IEC 60332 vertical ladder test methods [37] . 28
Table 3 – Summary and comparison of non-IEC vertical ladder test methods . 29
Table 4 – Overview of flame spread methods . 34

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FIRE HAZARD TESTING –
Part 9-2: Surface spread of flame –
Summary and relevance of test methods

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
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patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 60695-9-2 has been prepared by IEC technical committee 89: Fire
hazard testing.
It has the status of a basic safety publication in accordance with IEC Guide 104.
This second edition cancels and replaces the first edition of IEC 60695-9-2 published in 2014.
This edition consti
...