IEC 60695-2-10:2021

Fire hazard testing - Part 2-10: Glowing/hot-wire based test methods - Glow-wire apparatus and common test procedure

IEC 60695-2-10:2021 specifies the glow-wire apparatus and common test procedure to simulate the effects of thermal stresses which may be produced by heat sources such as glowing elements or overloaded resistors, for short periods, in order to assess the fire hazard by a simulation technique. The test procedure described in this document is a common test procedure intended for the small-scale tests in which a standardized electrically heated wire is used as a source of ignition. It is a common part of the test procedures applied to end products and to solid electrical insulating materials or other solid combustible materials. A detailed description of each particular test procedure is given in IEC 60695-2-11, IEC 60695-2-12 and IEC 60695-2-13. This basic safety publication focusing on safety test method(s) is primarily intended for use by technical committees in the preparation of safety publications 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. This standard is to be used in conjunction with IEC 60695-2-11, IEC 60695-2-12, and IEC 60695-2-13. This third edition cancels and replaces the second edition published in 2013. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
a) New terms and definitions with regards to times and durations have been added to Clause 3.
b) Previous Annex A of Equipment manufacturers and suppliers has been deleted.
c) Annex A (previous Annex B) for ignition and flaming observations has been changed from informative to normative.
d) New Annex C has been added, which visualizes times and durations, and gives examples for the behaviour of specimens, and how to evaluate them.
The contents of the corrigendum of January 2024 have been included in this copy.

Essais relatifs aux risques du feu - Partie 2-10: Essais au fil incandescent/chauffant - Appareillage et méthode commune d'essai

L'IEC 60695-2-10:2021 spécifie l’appareillage et la méthode commune d’essai au fil incandescent pour simuler l’effet de contraintes thermiques qui peuvent être produites par des sources de chaleur telles que des éléments incandescents ou des résistances surchargées, sur de courtes durées, afin d’évaluer de façon simulée les dangers d’incendie. La méthode d’essai décrite dans le présent document représente une méthode commune d’essai destinée aux essais à petite échelle qui utilisent un fil normalisé chauffé électriquement comme source d’allumage. Il s’agit d’une partie commune des méthodes d’essai appliquées aux produits finis et aux matériaux isolants électriques solides ou à d'autres matériaux combustibles. Une description détaillée de chaque méthode d’essai particulière est donnée dans l’IEC 60695 2 11, l’IEC 60695 2 12 et l’IEC 60695-2-13. La présente publication fondamentale de sécurité, fondée sur la ou les méthodes d’essai de sécurité, est essentiellement destinée à être utilisée par les comités d’études dans le cadre de l’élaboration de publications de sécurité conformément aux principes établis dans le Guide IEC 104 et 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. Cette norme doit être utilisée conjointement avec l’IEC 60695-2-11, l’IEC 60695-2-12 et l’IEC 60695-2-13. Cette troisième édition annule et remplace la deuxième édition parue en 2013. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
a) De nouveaux termes et définitions concernant les moments et les durées ont été ajoutés à l'Article 3.
b) L'ancienne Annexe A relative aux fabricants et fournisseurs d'appareillage a été supprimée.
c) L'Annexe A (ancienne Annexe B) relative aux observations sur l'allumage et l’inflammation qui était informative est devenue normative.
d) Une nouvelle Annexe C qui donne une représentation des moments et des durées, ainsi que des exemples du comportement des éprouvettes d’essai, et de la manière de les évaluer a été ajoutée.
Le contenu du corrigendum de janvier 2024 a été pris en considération dans cet exemplaire.

General Information

• Status: Published
• Publication Date: 27-Oct-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 12 - TC 89/WG 12
• Current Stage: PPUB - Publication issued
• Start Date: 10-Sep-2021
• Completion Date: 28-Oct-2021

Relations

• Corrected By: IEC 60695-2-10:2021/COR1:2024 - Corrigendum 1 - Fire hazard testing - Part 2-10: Glowing/hot-wire based test methods - Glow-wire apparatus and common test procedure
• Effective Date: 13-Oct-2023
• Revises: IEC 60695-2-10:2013 - Fire hazard testing - Part 2-10: Glowing/hot-wire based test methods - Glow-wire apparatus and common test procedure
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 60695-2-10 ®
Edition 3.0 2021-10
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
HORIZONTAL PUBLICATION
Fire hazard testing –
Part 2-10: Glowing/hot-wire based test methods – Glow-wire apparatus and
common test procedure
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC
copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
your local IEC member National Committee for further information.

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About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

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IEC 60695-2-10 ®
Edition 3.0 2021-10
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
HORIZONTAL PUBLICATION
Fire hazard testing –
Part 2-10: Glowing/hot-wire based test methods – Glow-wire apparatus and
common test procedure
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 13.220.40; 29.020 ISBN 978-2-8322-4414-2

– 2 – IEC 60695-2-10:2021 RLV © IEC 2021
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 8
4 Description of the test apparatus . 10
4.1 Glow-wire. 10
4.2 Test circuit and connections Electrical circuit of the glow-wire apparatus . 12
4.3 Temperature measuring system . 14
4.4 Specified layer . 15
4.5 Test chamber . 19
4.6 Timing device . 19
5 Verification of the apparatus . 20
5.1 Verification of the glow-wire tip . 20
5.2 Verification of the temperature measuring system . 20
6 Conditioning . 20
7 Common test procedure . 20
7.1 Test specimen support . 20
7.2 Glow-wire temperature . 21
7.3 Application of the glow-wire . 21
8 General test observations and evaluations of test results . 21
Annex A (informative) Equipment manufacturers and suppliers .
Annex B A (informative normative) Guidance on Requirements for "ignition" and
"flaming" observations . 23
A.1 General . 23
A.2 Examples of ignition and non-ignition . 23
Annex C B (informative) Guidance on the verification procedure of the glow-wire
temperature measuring system by the heating current . 25
B.1 Objective . 25
B.2 Preparation . 25
B.3 Verification procedure . 25
B.3.1 Observation and measurement . 25
B.3.2 Correlation chart . 25
B.3.3 Frequency of revising the correlation chart . 26
Annex C (informative) Supplement – Times and durations, and examples of
evaluations . 27
C.1 Times and durations (in accordance with Clause 3) . 27
C.2 Examples of evaluations . 27
Bibliography . 29

Figure 1 – Glow-wire and position of thermocouple . 12
Figure 2 – Test circuit Electrical circuit of the glow-wire apparatus. 14
Figure 3 – Test apparatus examples . 19
Figure A.1 – Example of a brightly shining flame . 23
Figure A.2 – Example of a blue corona at the glow-wire tip . 24

Figure A.3 – Example of ionized gases in the form of a blue corona tail near the glow
wire tip . 24
Figure B.1 – Correlation curve between the heating current and the glow-wire
temperature (example) . 26
Figure C.1 – Times and durations (in accordance with Clause 3) . 27
Figure C.2 – Evaluation scheme with examples . 28

– 4 – IEC 60695-2-10:2021 RLV © IEC 2021
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FIRE HAZARD TESTING –
Part 2-10: Glowing/hot-wire based test methods –
Glow-wire apparatus and common test procedure

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 this end and
in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,
Publicly Available Specifications (PAS) and Guides (hereafter referred to as "IEC Publication(s)"). Their
preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with
may participate in this preparatory work. International, governmental and non-governmental organizations liaising
with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for
Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence between
any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
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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.
This redline version of the official IEC Standard allows the user to identify the changes
made to the previous edition IEC 60603-7:2013. A vertical bar appears in the margin
wherever a change has been made. Additions are in green text, deletions are in
strikethrough red text.
IEC 60695-2-10 has been prepared by IEC technical committee 89: Fire hazard testing. It is an
International Standard.
This third edition cancels and replaces the second edition published in 2013. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) New terms and definitions with regards to times and durations have been added to Clause 3.
b) Previous Annex A of Equipment manufacturers and suppliers has been deleted.
c) Annex A (previous Annex B) for ignition and flaming observations has been changed from
informative to normative.
d) New Annex C has been added, which visualizes times and durations, and gives examples
for the behaviour of specimens, and how to evaluate them.
The text of this International Standard is based on the following documents:
FDIS Report on voting
89/1535/FDIS 89/1547/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/standardsdev/publications.
It has the status of a basic safety publication in accordance with IEC Guide 104.
This standard is to be used in conjunction with IEC 60695-2-11, IEC 60695-2-12, and
IEC 60695-2-13.
A list of all parts in the IEC 60695 series, published under the general title Fi
...

IEC 60695-2-10 ®
Edition 3.0 2021-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
HORIZONTAL PUBLICATION
PUBLICATION HORIZONTALE
Fire hazard testing –
Part 2-10: Glowing/hot-wire based test methods – Glow-wire apparatus and
common test procedure
Essais relatifs aux risques du feu –
Partie 2-10: Essais au fil incandescent/chauffant – Appareillage et méthode
commune d’essai
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
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About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigendum or an amendment might have been published.

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and French, with equivalent terms in 18 additional languages.
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IEC 60695-2-10 ®
Edition 3.0 2021-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
HORIZONTAL PUBLICATION
PUBLICATION HORIZONTALE
Fire hazard testing –
Part 2-10: Glowing/hot-wire based test methods – Glow-wire apparatus and

common test procedure
Essais relatifs aux risques du feu –

Partie 2-10: Essais au fil incandescent/chauffant – Appareillage et méthode

commune d’essai
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 13.220.40; 29.020 ISBN 978-2-8322-1010-9

– 2 – IEC 60695-2-10:2021 © IEC 2021
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 8
4 Description of the test apparatus . 10
4.1 Glow-wire. 10
4.2 Electrical circuit of the glow-wire apparatus . 11
4.3 Temperature measuring system . 12
4.4 Specified layer . 13
4.5 Test chamber . 14
4.6 Timing device . 14
5 Verification of the apparatus . 15
5.1 Verification of the glow-wire tip . 15
5.2 Verification of the temperature measuring system . 15
6 Conditioning . 15
7 Common test procedure . 15
7.1 Test specimen support . 15
7.2 Glow-wire temperature . 16
7.3 Application of the glow-wire . 16
8 General test observations and evaluations of test results . 16
Annex A (normative) Requirements for "ignition" and "flaming" observations . 17
A.1 General . 17
A.2 Examples of ignition and non-ignition . 17
Annex B (informative) Guidance on the verification procedure of the glow-wire
temperature measuring system by the heating current . 19
B.1 Objective . 19
B.2 Preparation . 19
B.3 Verification procedure . 19
B.3.1 Observation and measurement . 19
B.3.2 Correlation chart . 19
B.3.3 Frequency of revising the correlation chart . 20
Annex C (informative) Supplement – Times and durations, and examples of
evaluations . 21
C.1 Times and durations (in accordance with Clause 3) . 21
C.2 Examples of evaluations . 21
Bibliography . 23

Figure 1 – Glow-wire and position of thermocouple . 11
Figure 2 – Electrical circuit of the glow-wire apparatus . 12
Figure 3 – Test apparatus examples . 14
Figure A.1 – Example of a brightly shining flame . 17
Figure A.2 – Example of a blue corona at the glow-wire tip . 18
Figure A.3 – Example of ionized gases in the form of a tail near the glow wire tip . 18

Figure B.1 – Correlation curve between the heating current and the glow-wire
temperature (example) . 20
Figure C.1 – Times and durations (Example: ignition occurs at 5 s and extinguishing
occurs at 50 s) . 21
Figure C.2 – Evaluation scheme with examples . 22

– 4 – IEC 60695-2-10:2021 © IEC 2021
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FIRE HAZARD TESTING –
Part 2-10: Glowing/hot-wire based test methods –
Glow-wire apparatus and common test procedure

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 this end and
in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,
Publicly Available Specifications (PAS) and Guides (hereafter referred to as "IEC Publication(s)"). Their
preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with
may participate in this preparatory work. International, governmental and non-governmental organizations liaising
with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for
Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence between
any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, propert
...