IEC 60695-2-11:2021

Fire hazard testing - Part 2-11: Glowing/hot-wire based test methods - Glow-wire flammability test method for end products (GWEPT)

IEC 60695-2-11:2021 specifies a test method on an end product. It is intended to simulate the effects of thermal stresses produced by an electrically heated source to represent a fire hazard. This test method is used to check that, under defined test conditions, an end product exposed to an electrically heated source has either a limited ability to ignite or, if it ignites, a limited ability to propagate flame. However, the fire hazard analysis, the flammability aspects and the flame spreading to other products are not covered by this document. 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 publication is to be read in conjunction with IEC 60695-2-10. This third edition cancels and replaces the second edition published in 2014. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
a) Numerous terms and definitions relevant to this document have been added to Clause 3.

Essais relatifs aux risques du feu - Partie 2-11: Essais au fil incandescent/chauffant - Méthode d'essai d'inflammabilité pour produits finis (GWEPT)

L'IEC 60695-2-11:2021 spécifie une méthode d’essai applicable au produit fini. Elle est destinée à simuler les effets des contraintes thermiques produites par une source chauffée électriquement afin de représenter un danger d’incendie. La présente méthode d’essai permet de vérifier que, dans des conditions d’essai définies, un produit fini exposé à une source chauffée électriquement présente une aptitude limitée à s’enflammer ou, s’il s’enflamme, une aptitude limitée à propager la flamme. Cependant, le présent document ne traite pas de l’analyse du danger d'incendie, des aspects d’inflammabilité et de propagation de flammes à d’autres produits. 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 60695-2-10. Cette troisième édition annule et remplace la deuxième édition parue en 2014. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l’édition précédente:
a) ajout à l’Article 3 de nombreux termes et définitions applicables au présent document.

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

• Revises: IEC 60695-2-11:2014 - Fire hazard testing - Part 2-11: Glowing/hot-wire based test methods - Glow-wire flammability test method for end-products (GWEPT)
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 60695-2-11 ®
Edition 3.0 2021-10
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
HORIZONTAL PUBLICATION
Fire hazard testing –
Part 2-11: Glowing/hot-wire based test methods – Glow-wire flammability test
method for end products (GWEPT)

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.

IEC Central Office Tel.: [phone]
3, rue de Varembé [e-mail]
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Switzerland
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
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and French, with equivalent terms in 18 additional languages.
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(IEV) online.
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need further assistance, please contact the Customer Service
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IEC 60695-2-11 ®
Edition 3.0 2021-10
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
HORIZONTAL PUBLICATION
Fire hazard testing –
Part 2-11: Glowing/hot-wire based test methods – Glow-wire flammability test
method for end products (GWEPT)
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 13.220.40; 29.020 ISBN 978-2-8322-4419-7

– 2 – IEC 60695-2-11:2021 RLV © IEC 2021
CONTENTS
FOREWORD . 3
INTRODUCTION . 2
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Test specimens . 9
4.1 General . 9
4.2 Complete end product . 9
4.3 Partial end product (alternative) . 9
4.4 Test considerations and limitations associated with the specimen
configuration . 9
5 Test apparatus . 10
6 Verification of the temperature measuring system . 10
7 Conditioning . 10
7.1 Conditioning of test specimens . 10
7.2 Conditioning of specified layers . 11
7.3 Testing conditions . 11
8 Test procedure . 11
8.1 General . 11
8.2 Test temperatures . 11
8.3 Number of test specimens . 12
9 Observations and measurements . 12
10 Evaluation of test results . 12
11 Test report . 13
12 Information to be given in the relevant product standard . 13
Annex A (informative) Suggested GWEPT temperatures . 14
Bibliography . 16

Figure 1 – Small parts . 10
Figure A.1 – Suggested GWEPT temperatures . 15

Table 1 – Test temperatures . 12

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FIRE HAZARD TESTING –
Part 2-11: Glowing/hot-wire based test methods –
Glow-wire flammability test method for end products (GWEPT)

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, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
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.
This redline version of the official IEC Standard allows the user to identify the changes
made to the previous edition IEC 60695-2-11:2014. A vertical bar appears in the margin
wherever a change has been made. Additions are in green text, deletions are in
strikethrough red text.
– 4 – IEC 60695-2-11:2021 RLV © IEC 2021
IEC 60695-2-11 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 2014. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) Numerous terms and definitions relevant to this document have been added to Clause 3.
The text of this International Standard is based on the following documents:
FDIS Report on voting
89/1536/FDIS 89/1544/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 60695-2-10.
A list of all the parts in the IEC 60695 series, under the general title Fire hazard testing, can be
found on the IEC web site.
In this standard, the following print types are used:
• terms defined in Clause 3: in bold type
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,
• replaced by a revised edition, or
• amended.
IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates that it
contains colours which are considered to be useful for the correct understanding of its
contents. Users should therefore print this document using a colour printer.

INTRODUCTION
The purpose of this Introduction is to provide background regarding the basic guidance that
prompted the preparation of this International Standard and how it relates to the Scope.
In the design of any electrotechnical product, the risk of fire and the potential hazards
associated with fire need to be considered. In this respect the objective within the design of
component, circuit, and product design, as well as the choice of the materials, is to reduce to
acceptable levels the potential risks of fire during normal operating conditions, reasonable
foreseeable abnormal use, malfunction, and/or failure. IEC 60695-1-10 [1] , together with its
companion IEC 60695-1-11 [2], has been developed to provide guidance on how this is to be
accomplished.
The primary aims of IEC 60695-1-10 and IEC 60695-1-11 are to provide guidance on how to:
a) prevent ignition caused by an electrically energized component part, and
b) confine any resulting fire within the bounds of the enclosure of the electrotechnical product
in the event of ignition.
Secondary aims of IEC 60695-1-10 and IEC 60695-1-11 include the minimization of any flame
spread beyond the product’s enclosure and the minimization of harmful effects of fire effluents
such as heat, smoke, toxicity and/or corrosivity.
Fires involving electrotechnical products can also be initiated from external non-electrical
sources. Considerations of this nature should be are normally dealt with in the overall fire
hazard assessment.
In electrotechnical equipment, overheated metal parts can act as ignition sources. In glow-wire
tests, a glowing wire is used to simulate such an ignition source.
IEC 60695-2-10 describes a glow-wire test apparatus and common test procedure, IEC 60695-
2-12 [3] descri
...

IEC 60695-2-11 ®
Edition 3.0 2021-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
HORIZONTAL PUBLICATION
PUBLICATION HORIZONTALE
Fire hazard testing –
Part 2-11: Glowing/hot-wire based test methods – Glow-wire flammability test
method for end products (GWEPT)

Essais relatifs aux risques du feu –
Partie 2-11: Essais au fil incandescent/chauffant – Méthode d’essai
d’inflammabilité pour produits finis (GWEPT)

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.

IEC publications search - webstore.iec.ch/advsearchform IEC online collection - oc.iec.ch
The advanced search enables to find IEC publications by a Discover our powerful search engine and read freely all the
variety of criteria (reference number, text, technical publications previews. With a subscription you will always
committee, …). It also gives information on projects, replaced have access to up to date content tailored to your needs.
and withdrawn publications.
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The world's leading online dictionary on electrotechnology,
Stay up to date on all new IEC publications. Just Published
containing more than 22 000 terminological entries in English
details all new publications released. Available online and
and French, with equivalent terms in 18 additional languages.
once a month by email.
Also known as the International Electrotechnical Vocabulary

(IEV) online.
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need further assistance, please contact the Customer Service
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IEC 60695-2-11 ®
Edition 3.0 2021-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
HORIZONTAL PUBLICATION
PUBLICATION HORIZONTALE
Fire hazard testing –
Part 2-11: Glowing/hot-wire based test methods – Glow-wire flammability test

method for end products (GWEPT)

Essais relatifs aux risques du feu –

Partie 2-11: Essais au fil incandescent/chauffant – Méthode d’essai

d’inflammabilité pour produits finis (GWEPT)

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 13.220.40; 29.020 ISBN 978-2-8322-1011-0

– 2 – IEC 60695-2-11:2021 © IEC 2021
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Test specimens . 8
4.1 General . 8
4.2 Complete end product . 8
4.3 Partial end product (alternative) . 9
4.4 Test considerations and limitations associated with the specimen
configuration . 9
5 Test apparatus . 10
6 Verification of the temperature measuring system . 10
7 Conditioning . 10
7.1 Conditioning of test specimens . 10
7.2 Conditioning of specified layers . 11
7.3 Testing conditions . 11
8 Test procedure . 11
8.1 General . 11
8.2 Test temperatures . 11
8.3 Number of test specimens . 12
9 Observations and measurements . 12
10 Evaluation of test results . 12
11 Test report . 12
12 Information to be given in the relevant product standard . 13
Annex A (informative) Suggested GWEPT temperatures . 14
Bibliography . 16

Figure 1 – Small parts . 10
Figure A.1 – Suggested GWEPT temperatures . 15

Table 1 – Test temperatures . 11

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FIRE HAZARD TESTING –
Part 2-11: Glowing/hot-wire based test methods –
Glow-wire flammability test method for end products (GWEPT)

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, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
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.
IEC 60695-2-11 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 2014. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) Numerous terms and definitions relevant to this document have been added to Clause 3.

– 4 – IEC 60695-2-11:2021 © IEC 2021
The text of this International Standard is based on the following documents:
FDIS Report on voting
89/1536/FDIS 89/1544/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
...