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IEC 60695-11-10:2013

(Main)

Fire hazard testing - Part 11-10: Test flames - 50 W horizontal and vertical flame test methods

Fire hazard testing - Part 11-10: Test flames - 50 W horizontal and vertical flame test methods

IEC 60695-11-10:2013 specifies small-scale laboratory test procedures intended to compare the burning behaviour of different materials used in electrotechnical products when vertically or horizontally oriented test bar specimens are exposed to a small flame ignition source with a nominal thermal power of 50 W. These test methods determine either the linear burning rate or the self-extinguishing properties of materials. These test methods are applicable to solid and cellular materials that have an apparent density of more than 250 kg/m3, determined in accordance with ISO 845. Two test methods are described. Method A is a horizontal burning test and is intended to determine the linear burning rate of materials under specific test conditions. Method B is a vertical burning test and is intended to determine whether materials self-extinguish under specific test conditions. This second edition cancels and replaces the consolidated version of IEC 60695-11-10 published in 2003 and constitutes a technical revision. The main changes with respect to the first edition are listed below:
- Editorial changes have been made throughout the document for the purpose of aligning IEC 60695-11-10 with IEC 60695-11-20,
- Details on test specimen dimensions have been added to Clause 7,
- New Sublause 9.1.4 Conditioning of the cotton pad has been added,
- New Subclause 9.2.4 Evaluation of "burned to the holding clamp" has been added,
- New Annex C with examples of datasheets has been added,
- The Bibliography has been updated and references added.
This publication is to be read in conjunction with IEC 60695-11-4:2011.
Key words: Test flames, Fire hazard, Fire test
The contents of the corrigendum of September 2014 have been included in this copy.

Essais relatifs aux risques du feu - Partie 11-10: Flammes d'essai - Méthodes d'essai horizontal et vertical à la flamme de 50 W

La CEI 60695-11-10:2013 spécifie des modes opératoires d'essai à petite échelle en laboratoire pour comparer le comportement en combustion de différents matériaux utilisés dans les produits électrotechniques lorsque des éprouvettes d'essai en forme de barreau, en position verticale ou horizontale, sont exposées à une source d'allumage constituée d'une petite flamme, d'une puissance thermique nominale de 50 W. Ces méthodes d'essai déterminent la vitesse linéaire de combustion ou les propriétés d'auto-extinction des matériaux. Ces méthodes d'essai sont applicables aux matériaux solides et alvéolaires ayant une masse volumique apparente supérieure à 250 kg/m3, déterminée conformément à l'ISO 845. Deux méthodes d'essai sont décrites. La Méthode A est une méthode d'essai de combustion horizontale et elle est destinée à déterminer une vitesse linéaire de combustion des matériaux dans des conditions d'essai spécifiques. La Méthode B est une méthode d'essai de combustion verticale et elle est destinée à déterminer si les matériaux sont auto-extinguibles dans des conditions d'essai spécifiques. Cette deuxième édition annule et remplace la version consolidée de la CEI 60695-11-10 publiée en 2008. Elle en constitue une révision technique. Les principales modifications apportées par rapport à la première édition sont énumérées ci-dessous:
- Des modifications rédactionnelles ont été faites dans l'ensemble du document en vue d'aligner la CEI 60695-11-10 sur la CEI 695-11-20,
- des détails sur les dimensions des éprouvettes d'essai ont été ajoutés dans l'Article 7,
- un nouveau Paragraphe 9.1.4 Conditionnement du coussin de coton a été ajouté,
- un nouveau Paragraphe 9.2.4 Evaluation de l'état "consumé jusqu'à la pince de fixation a été ajouté,
- une nouvelle Annexe C avec des exemples de fiches techniques a été ajoutée et
- la Bibliographie a été actualisée et des références ajoutées.
Cette publication doit être lue conjointement avec la IEC 60695-11-4:2011.
Mots-clés: Flammes d'essai, Risque du feu, essai au feu
Le contenu du corrigendum de septembre 2014 a été pris en considération dans cet exemplaire.

General Information

Status
Published
Publication Date
20-May-2013
ICS
01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
13.220.40 - Ignitability and burning behaviour of materials and products
29.020 - Electrical engineering in general
Technical Committee
TC 89 - Fire hazard testing
Drafting Committee
WG 12 - TC 89/WG 12
Current Stage
PPUB - Publication issued
Start Date
15-Jun-2013
Completion Date
21-May-2013
Ref Project

Relations

Corrected By
IEC 60695-11-10:2013/COR1:2014 - Corrigendum 1 - Fire hazard testing - Part 11-10: Test flames - 50 W horizontal and vertical flame test methods
Effective Date
05-Sep-2023
Revises
IEC 60695-11-10:1999 - Fire hazard testing - Part 11-10: Test flames - 50 W horizontal and vertical flame test methods
Effective Date
05-Sep-2023
Revises
IEC 60695-11-10:1999/AMD1:2003 - Amendment 1 - Fire hazard testing - Part 11-10: Test flames - 50 W horizontal and vertical flame test methods
Effective Date
05-Sep-2023

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IEC 60695-11-10:2013 - Fire hazard testing - Part 11-10: Test flames - 50 W horizontal and vertical flame test methods
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IEC 60695-11-10 ®
Edition 2.0 2013-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
BASIC SAFETY PUBLICATION
PUBLICATION FONDAMENTALE DE SÉCURITÉ
Fire hazard testing –
Part 11-10: Test flames – 50 W horizontal and vertical flame test methods

Essais relatifs aux risques du feu –
Partie 11-10: Flammes d'essai – Méthodes d'essai horizontal et vertical à la
flamme de 50 W
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IEC 60695-11-10 ®
Edition 2.0 2013-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
BASIC SAFETY PUBLICATION
PUBLICATION FONDAMENTALE DE SÉCURITÉ

Fire hazard testing –
Part 11-10: Test flames – 50 W horizontal and vertical flame test methods

Essais relatifs aux risques du feu –

Partie 11-10: Flammes d'essai – Méthodes d'essai horizontal et vertical à la

flamme de 50 W
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX W
ICS 13.220.40; 29.020 ISBN 978-2-83220-796-3

– 2 – 60695-11-10 © IEC:2013
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 8
4 Principle . 11
5 Significance of the fire tests . 12
5.1 Vertical and horizontal testing . 12
5.2 Limitations on the use of test results . 12
5.3 Physical properties that can affect burning behaviour . 12
5.4 Shrinkage and distortion . 12
5.5 Effects of test specimen conditioning . 12
6 Apparatus . 12
6.1 Laboratory fume hood/chamber . 12
6.2 Laboratory burner . 13
6.3 Support stand . 13
6.4 Timing device . 13
6.5 Measuring scale . 13
6.6 Wire gauze . 13
6.7 Conditioning chamber . 13
6.8 Micrometer . 13
6.9 HB support fixture . 13
6.10 Desiccator . 13
6.11 Air-circulating oven . 14
6.12 Cotton pads . 14
7 Test specimens . 14
7.1 Test specimen preparation . 14
7.2 Test specimen dimensions . 14
7.3 Testing materials – ranges in formulations . 15
7.3.1 General . 15
7.3.2 Density, melt flows and filler/reinforcement . 15
7.3.3 Colour . 15
8 Test method A – Horizontal burning test . 16
8.1 Conditioning and test conditions . 16
8.1.1 General . 16
8.1.2 “As received” conditioned test specimens . 16
8.1.3 Test conditions . 16
8.2 Test procedure . 16
8.2.1 Test specimen marking . 16
8.2.2 Test specimen setup . 16
8.2.3 Flame setup. 16
8.2.4 Application of flame and use of the HB support fixture . 17
8.2.5 Method and observations . 17
8.3 Calculation . 17
8.4 Classification . 17

60695-11-10 © IEC:2013 – 3 –
8.4.1 General . 17
8.4.2 HB classification . 18
8.4.3 HB40 classification . 18
8.4.4 HB75 classification . 18
8.5 Test report . 18
9 Test method B – Vertical burning test . 19
9.1 Conditioning and test conditions . 19
9.1.1 General . 19
9.1.2 “As received” conditioned test specimens . 19
9.1.3 Oven conditioned test specimens . 19
9.1.4 Conditioning of the cotton pads . 19
9.1.5 Test conditions . 19
9.2 Test procedure . 19
9.2.1 Test specimen setup . 19
9.2.2 Flame setup. 19
9.2.3 Flame application and observations . 20
9.2.4 Evaluation of “burned to the holding clamp” . 21
9.2.5 Criteria for retest . 21
9.3 Calculation of the total afterflame time, t . 21
f
9.4 Classification . 21
9.5 Test report . 22
Annex A (informative) Precision of test method A . 34
Annex B (informative) Precision of test method B . 35
Bibliography . 36

Figure 1 – Horizontal burning test apparatus . 23
Figure 2 – Flexible test specimen support fixture – method A . 24
Figure 3 – Vertical burning test apparatus – method B . 25
Figure 4 – Bar test specimen . 26
Figure 5 – Optional clearance gauge . 27
Figure 6 – Clearance ga
...

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This publication is to be read in conjunction with IEC 60695-11-3:2012. The contents of the corrigendum of January 2016 have been included in this copy.

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