IEC 60695-2-12:2010

IEC 60695-2-12 ®
Edition 2.1 2014-02
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
BASIC SAFETY PUBLICATION
PUBLICATION FONDAMENTALE DE SÉCURITÉ
Fire hazard testing –
Part 2-12: Glowing/hot-wire based test methods – Glow-wire flammability index
(GWFI) test method for materials
Essais relatifs aux risques du feu –
Partie 2-12: Essais au fil incandescent/chauffant – Méthode d'essai d'indice
d’inflammabilité au fil incandescent (GWFI) pour matériaux

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IEC 60695-2-12 ®
Edition 2.1 2014-02
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
BASIC SAFETY PUBLICATION
PUBLICATION FONDAMENTALE DE SÉCURITÉ

Fire hazard testing –
Part 2-12: Glowing/hot-wire based test methods – Glow-wire flammability index

(GWFI) test method for materials

Essais relatifs aux risques du feu –

Partie 2-12: Essais au fil incandescent/chauffant – Méthode d'essai d'indice

d’inflammabilité au fil incandescent (GWFI) pour matériaux

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 13.220.40, 29.020 ISBN 978-2-8322-1398-8

IEC 60695-2-12 ®
Edition 2.1 2014-02
CONSOLIDATED VERSION
REDLINE VERSION
VERSION REDLINE
colour
inside
BASIC SAFETY PUBLICATION
PUBLICATION FONDAMENTALE DE SÉCURITÉ
Fire hazard testing –
Part 2-12: Glowing/hot-wire based test methods – Glow-wire flammability index
(GWFI) test method for materials
Essais relatifs aux risques du feu –
Partie 2-12: Essais au fil incandescent/chauffant – Méthode d'essai d'indice
d’inflammabilité au fil incandescent (GWFI) pour matériaux

– 2 – IEC 60695-2-12:2010
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CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references. 6
3 Terms and definitions . 7
4 Test specimens . 8
4.1 Test specimen preparation . 8
4.2 Test specimen dimensions . 8
4.3 Testing ranges in formulations . 8
4.3.1 General . 8
4.3.2 Density, melt flows and filler/reinforcement . 9
4.3.3 Colour . 9
5 Apparatus . 9
6 Temperature measuring system verification . 9
7 Conditioning and test conditions . 9
7.1 Conditioning of test specimens . 9
7.2 Conditioning of the wrapping tissue and the wooden board . 9
7.3 Testing conditions. 10
8 Test procedure . 10
8.1 General . 10
8.2 Initial test temperatures . 10
8.3 Test temperatures . 10
9 Observations and measurements . 11
9.1 General . 11
9.2 Initial observations . 11
9.3 Test observations . 11
10 Evaluation of test results . 11
10.1 Test criteria . 11
10.2 Glow-wire flammability index . 12
11 Test report . 12
Bibliography . 13

Table 1 – Initial test temperatures . 10

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INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FIRE HAZARD TESTING –
Part 2-12: Glowing/hot-wire based test methods –
Glow-wire flammability index (GWFI) test method for materials
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,
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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
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3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
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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
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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 consolidated version of the official IEC Standard and its amendment has been
prepared for user convenience.
IEC 60695-2-12 edition 2.1 contains the second edition (2010-10) [documents 89/1017/
FDIS and 89/1034/RVD] and its amendment 1 (2014-02) [documents 89/1198/FDIS and
89/1207/RVD].
In this Redline version, a vertical line in the margin shows where the technical content
is modified by amendment 1. Additions and deletions are displayed in red, with
deletions being struck through. A separate Final version with all changes accepted is
available in this publication.

– 4 – IEC 60695-2-12:2010
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International Standard IEC 60695-2-12 has been prepared by technical committee 89: Fire
hazard testing.
It has the status of a basic safety publication in accordance with IEC Guide 104 and ISO/IEC
Guide 51. This standard is to be used in conjunction with IEC 60695-2-10 and IEC 60695-2-13.
The main changes with respect to the previous edition are listed below:
– modified title;
– addition of an Introduction;
– clarification of Scope;
– expansion of Clause 2: Normative references;
– definitions added to Clause 3;
– revision of Clause 4 to alignment with the IEC 60695-11 series to introduce guidance on
test programs for material variations;
– clarification of Clause 8: Conditioning (now Clause 7);
– deletion of Clause 9 “Initial measurements”;
– expansion of Clause 10: Test procedures (now Clause 8);
– expansion of Clause 11: Observation and measurement (now Clause 9);
– clarification of Clause 12: Evaluation of test results (now Clause 10);
– expansion of Clause 13: Test report (now Clause 11).
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
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.
Part 2 consists of the following parts:
Part 2-10: Glowing/hot-wire based test methods – Glow-wire apparatus and common test
procedure
Part 2-11: Glowing/hot-wire based test methods – Glow-wire flammability test method for end-
products
Part 2-12: Glowing/hot-wire based test methods – Glow-wire flammability index (GWFI) test
method for materials
Part 2-13: Glowing/hot-wire based test methods – Glow-wire ignition temperature (GWIT) test
method for materials
The committee has decided that the contents of the base publication and its amendment will
remain unchanged until the stability date indicated on the IEC web site under
"http://webstore.iec.ch" in the data related to the specific publication. At this date, the
publication 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 publication using a colour printer.

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INTRODUCTION
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 of component, circuit,
and product design, as well as the choice of 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/TC 89 has developed IEC 60695-1-10, together with its
companion, IEC 60695-1-11, 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:
a) to prevent ignition caused by an electrically energized component part, and
b) to 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 the 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 dealt with in the overall fire risk hazard
assessment.
In electrotechnical equipment, overheated metal parts can act as ignition sources. In glow-wire
tests a red-hot 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-
2-11 describes a glow-wire flammability test for end products, and IEC 60695-2-13 describes a
glow-wire ignition temperature test method for materials.
This part of IEC 60695 describes a glow-wire flammability index test for materials. It should be
used to measure, describe, and rank the properties of materials in response to heat caused by
contact with an electrically heated wire under controlled laboratory conditions. This may be
useful for the evaluation of materials for use in products that may be exposed to excess
thermal stress such as a fault current flowing through a wire, overloading of components, and/or bad
connections. It should not be used to solely describe or appraise the fire hazard or fire risk of
materials, products, or assemblies under actual fire conditions. However, results of this test
may be used as elements of a fire risk hazard assessment which takes into account all of the
factors which are pertinent to a fire hazard assessment of a particular end use.
This International Standard may involve hazardous materials, operations, and equipment. It
does not purport to address all of the safety problems associated with its use. It is the
responsibility of the user of this standard to establish appropriate safety and health practices
and determine the applicability of regulatory limitations prior to use.

– 6 – IEC 60695-2-12:2010
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FIRE HAZARD TESTING –
Part 2-12: Glowing/hot-wire based test methods –
Glow-wire flammability index (GWFI) test method for materials

1 Scope
This part of IEC 60695 specifies the details of the glow-wire test to be applied to test
specimens of solid electrical insulating materials or other solid materials for flammability testing
to determine the glow-wire flammability index (GWFI).
GWFI is the highest temperature, determined during this standardized procedure, at which the
tested material
a) does not ignite or, if it does, extinguishes within 30 s after removal of the glow-wire and is
not totally consumed,
and
b) molten drips, if they occur, do not ignite the wrapping tissue.
This test method is a materials test carried out on a series of standard test specimens. The
data obtained, along with data from the glow-wire ignition temperature (GWIT) test method for
materials, IEC 60695-2-13, can then be used in a preselection process in accordance with
IEC 60695-1-30 to judge the ability of materials to meet the requirements of IEC 60695-2-11.
NOTE As an outcome of conducting a fire hazard assessment, an appropriate series of preselection flammability
and ignition tests may allow a reduction of end product testing.
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.
2 Normative references
The following referenced documents are indispensable for the application 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 60695-1-30:2008, Fire hazard testing – Part 1-30: Guidance for assessing the fire hazard
of electrotechnical products – Preselection testing process – General guidelines
IEC 60695-2-10:2000, Fire hazard testing – Part 2-10: Glowing/hot-wire based test methods –
Glow-wire apparatus and common test procedure
IEC 60695-2-11:2000, Fire hazard testing – Part 2-11: Glowing/hot-wire based test methods –
Glow-wire flammability test method for end-products
IEC 60695-2-13, Fire hazard testing – Part 2-13: Glowing/hot-wire based test methods – Glow-
wire ignition temperature (GWIT) test method for materials

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IEC Guide 104:1997, The preparation of safety publications and the use of basic safety
publications and group safety publications
ISO/IEC Guide 51:1999, Safety aspects – Guidelines for inclusion in standards
ISO/IEC 13943:2008, Fire safety – Vocabulary
ISO 291:2008, Plastics – Standard atmospheres for conditioning and testing
ISO 293:2004, Plastics – Compression moulding of test specimens of thermoplastic materials
ISO 294 (all parts), Plastics – Injection moulding of test specimens of thermoplastic materials
ISO 295:2004, Plastics – Compression moulding of test specimens of thermosetting materials
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO/IEC 13943, some of
which are reproduced below for the user’s convenience, as well as the following apply.
3.1
combustion
exothermic reaction of a substance with an oxidizing agent
NOTE Combustion generally emits fire effluent accompanied by flames and/or glowing.
[ISO/IEC 13943:2008, definition 4.46]
3.2
flame, noun
rapid, self-sustaining, sub-sonic propagation of combustion in a gaseous medium, usually with
emission of light
[ISO/IEC 13943:2008, definition 4.133]
3.3
flammability
ability of a material or product to burn with a flame under specific conditions
[ISO/IEC 13943:2008, definition 4.151]
3.4
glowing, noun
luminosity caused by heat
[ISO/IEC 13943:2008, definition 4.168]
3.5
glowing combustion
combustion of a material in the solid phase without flame but with emission of light from the
combustion zone
[ISO/IEC 13943:2008, definition 4.169]
3.6
ignition
sustained ignition (deprecated)
initiation of combustion

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[ISO/IEC 13943:2008, definition 4.187]
3.7
ignition
sustained ignition (deprecated)
initiation of sustained flame
[ISO/IEC 13943:2008, definition 4.188]
3.8
molten drip
falling droplet of material that has been softened or liquefied by heat
NOTE The droplets can be flaming or not flaming.
[ISO/IEC 13943:2008, definition 4.232]
3.9
preselection
process of assessing and choosing candidate materials, components or sub-assemblies for
making an end-product
[IEC 60695-1-30:2008, definition 3.2]
4 Test specimens
4.1 Test specimen preparation
Test specimens shall be fabricated using the appropriate ISO method, e.g. casting and
injection moulding in accordance with the ISO 294 series, compression moulding in accordance
with ISO 293 or ISO 295, or transfer moulding to the necessary shape. Where this is not
possible, the test specimen shall be cut and/or sliced from a representative sample of the
material (for example, produced using the same fabrication process as would be used to mould
a part of a product).
After any fabrication or cutting operation, care shall be taken to remove all dust and any
particles from the surface; cut edges shall be fine sanded to a smooth finish.
4.2 Test specimen dimensions
The dimensions of the planar sections of the test specimens shall be at least 60 mm in length
and 60 mm in width (measured inside the clamping areas) and shall be provided in all
thicknesses under consideration. The preferred values include 0,1 mm ± 0,02 mm, 0,2 mm ±
0,02 mm, 0,4 mm ± 0,05 mm, 0,75 mm ± 0,1 mm, 1,5 mm ± 0,15 mm, 3,0 mm ± 0,2 mm, or
6,0 mm ± 0,4 mm.
NOTE A set of 15 30 test specimens per thickness will, in general, be adequate to concurrently establish the
GWFI and the glow wire ignition temperature, GWIT (See IEC 60695-2-13) and GWFI.
4.3 Testing ranges in formulations
4.3.1 General
The results of tests carried out on test specimen sets of different colour, thickness, density,
molecular mass, anisotropic type/direction, additives, fillers, and/or reinforcements can vary.
When agreed between the parties involved, the test programs outlined in 4.3.2 and 4.3.3 may
be employed in order to evaluate these variations.

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4.3.2 Density, melt flows and filler/reinforcement
Test specimens covering all combinations of minimum and maximum levels of density, melt
flows and filler/reinforcement content may be provided and considered representative of the
range if the test results yield the same GWFI. If the test results do not yield the same GWFI for
all test specimens representing the range, evaluation shall be limited to the materials with the
specific levels of density, melt flows and filler/reinforcement tested. In addition, test specimens
with intermediate density, melt flows, and filler/reinforcement content shall be tested to
determine the representative range for each GWFI determination. However, as an alternative,
the least favourable performance of the specific levels of density, melt flows and
filler/reinforcement tested may be considered representative of intermediate levels without
additional testing.
4.3.3 Colour
When evaluating a range of colours, test specimens that
a) contain no colouring,
b) contain the highest level of organic pigments/colorants/dyes and/or carbon black,
c) contain the highest level of inorganic pigments, and
d) contain pigments/colorants/dyes which are known to adversely affect flammability
characteristics
are considered representative of the colour range if the test results yield the same GWFI.
5 Apparatus
The description of the test apparatus is specified in Clause 5 of IEC 60695-2-10.
The wrapping tissue and wooden board to be placed underneath the test specimen are
specified in 5.3 of IEC 60695-2-10.
6 Temperature measuring system verification
The method of verification of the temperature measuring system is specified in 6.2 of
IEC 60695-2-10.
7 Conditioning and test conditions
7.1 Conditioning of test specimens
The test specimens shall be conditioned for a minimum of 48 h at 23 °C ± 2 °C and at a
relative humidity between 40 % and 60 %. Once removed from the conditioning atmosphere,
the test specimens shall be tested within 4 h (see ISO 291, Clause 6, Table 2, Class 2).
7.2 Conditioning of the wrapping tissue and the wooden board
The wrapping tissue and the wooden board to be placed underneath the test specimen are
specified in 5.3 of IEC 60695-2-10. They shall be conditioned for a minimum of 48 h at 23 °C ±
2 °C and at a relative humidity between 40 % and 60 %. Once removed from the conditioning
atmosphere, the wrapping tissue and wooden board shall be used within 1 h (see ISO 291,
Clause 6, Table 2, Class 2).
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7.3 Testing conditions
The test specimens shall be tested in a laboratory atmosphere having a temperature of 25 °C ±
10 °C between 15 °C and 35 °C and at a relative humidity between 45 % and less than or
equal to 75 %.
8 Test procedure
8.1 General
The test specimens shall be identified and examined visually.
The general test procedure shall be as specified in Clause 8 of IEC 60695-2-10.
8.2 Initial test temperatures
The glow-wire is heated to one of the initial test temperatures specified in Table 1, which is
considered to be just high enough to cause ignition. If unknown the initial test temperature shall
not exceed 650 °C.
NOTE When determining both the GWIT and GWFI, it has been found to be useful to first perform the procedure
in IEC 60695-2-13. Once the GWIT has been determined, this should be used as the initial test temperature for this
test.
Table 1 – Initial test temperatures
Initial test Tolerances
temperatures
°C °K
550 ±10
±10
±10
700 ±10
750 ±10
800 ±15
±15
±15
960 ±15
8.3 Test temperatures
A set of three test specimens shall be prepared for testing at a chosen test temperature.
If one of the three test specimens fails to withstand the test criteria as defined in 10.1, the test
shall be repeated with three new test specimens at a test temperature preferably 50 K (60 K for
960 °C) lower.
If the three test specimens withstands the test criteria as defined in 10.1, the test shall be
repeated with three new test specimens at a test temperature preferably 50 K (60 K for 900 °C)
higher.
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Repeat the tests with three new test specimens each time and reduce the interval of test
temperatures to 25 K (30 K for 960 °C) in the final approach to determine the maximum test
temperature at which all three test specimen withstand the test criteria as defined in 10.1.
However, there is no need to go to the higher temperature if it has already been determined
that at least one of the three test specimen will not withstand the test criteria as defined in
10.1.
NOTE 1 The minimum test temperature is 550 °C. The maximum test temperature is 960 °C.
o
NOTE 2 60 K and 30 K are the appropriate temperature intervals for temperatures above 900 C.
o
NOTE 3 It is recommended to start with a test temperature of 650 C.
9 Observations and measurements
9.1 General
The following observations and measurements shall be recorded.
9.2 Initial observations
After identifying and visually inspecting the test specimens, the following shall be recorded:
a) a description of the tested material, including thickness, colour, type and manufacturer,
b) a description of the method for the preparation of the test specimens, if available,
c) the direction of any anisotropy, if known, relative to the dimensions of the test specimen,
and
d) the pre-test conditioning of the test specimens and wrapping tissue.
9.3 Test observations
During the time of application of the glow-wire, and during a further period of 30 s, the test
specimen and the wrapping tissue placed below it shall be observed and the following shall be
recorded:
a) the time, t t , of the longest sustained and continuous flaming and/or glowing combustion
R
R
observed after the removal of the glow-wire tip from the test specimen (to the nearest
0,5 s),
b) the test temperatures from Clause 8,
c) total consumption of the test specimen, if this occurs,
d) ignition of the wrapping tissue, if this occurs, and
e) additional observations that may be agreed to by both parties.
NOTE If the measured value is 30,2 s this should be recorded as 30,0 s. If the measured value is 30,3 s this
should be recorded as 30,5 s.
10 Evaluation of test results
10.1 Test criteria
The test specimen is considered to have withstood this test if there is no ignition, or if all of the
following situations apply:
a) the longest sustained and continuous flames or glowing of the test specimen after removal
of the glow-wire, t t , extinguish within 30 s;
R
R
b) the specimen is not totally consumed; and
c) there is no ignition of the wrapping tissue.

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10.2 Glow-wire flammability index
The GWFI is the highest temperature at which three test specimens at the relevant thickness
withstand the test as defined in 10.1.
In those cases where the material under test did not ignite during the determination of the
GWIT (see IEC 60695-2-13) at the highest temperature taken from Table 1, the GWFI test
procedure need not be conducted. The GWFI for this material will be 960 °C at the relevant
thickness.
The GWFI shall be reported in the following manner:
for example, for a test specimen of 3,0 mm thickness and a GWFI temperature of 850 °C:
GWFI: 850/3,0
In case of different GWFIs per thickness, these GWFIs shall be reported per thickness.
In those cases where the GWFI is to be utilized over a range of thicknesses, it may be
appropriate to consider the GWFI at the minimum and maximum thickness and the other
preferred thicknesses in the range.
The GWFI representative for a range of thicknesses shall be reported in the following manner:
for example, for a range of thicknesses of 0,75 mm up to 3,0 mm and a GWFI temperature of
850 °C:
GWFI: 850 / 0,75 – 3,0
11 Test report
The test report shall include the following information:
a) a reference to this International Standard;
b) the test temperatures from 8.3;
c) the observations and measurements from Clause 9; and
d) the GWFI from 10.2.
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Bibliography
IEC 60695-1-10, Fire hazard testing – Part 1-10: Guidance for assessing the fire hazard of
electrotechnical products – General guidelines
IEC 60695-1-11, Fire hazard testing – Part 1-11: Guidance for assessing the fire hazard of
electrotechnical products – Fire hazard assessment
IEC 60695-2-11, Fire hazard testing – Part 2-11: Glowing/hot-wire based test methods – Glow-
wire flammability test method for end-products
IEC 60695-11(all parts), Fire hazard testing – Part 11:Test flames
ISO/IEC 13943:2008, Fire safety – Vocabulary

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SOMMAIRE
AVANT-PROPOS . 15
INTRODUCTION . 17
1 Domaine d’application . 18
2 Références normatives . 18
3 Termes et définitions . 19
4 Eprouvettes d’essai . 20
4.1 Préparation des éprouvettes d’essai . 20
4.2 Dimensions de l'éprouvette d’essai . 20
4.3 Plages d’essai dans les formules . 21
4.3.1 Généralités . 21
4.3.2 Densité, indice de fluidité et charge/renfort . 21
4.3.3 Couleur . 21
5 Appareillage . 21
6 Vérification du système de mesure de température . 21
7 Conditionnement et conditions d'essai . 22
7.1 Conditionnement des éprouvettes d’essai . 22
7.2 Conditionnement du papier mousseline et de la plaque en bois . 22
7.3 Conditions d'essai . 22
8 Mode opératoire. 22
8.1 Généralités . 22
8.2 Températures initiales d'essai . 22
8.3 Températures d'essai . 23
9 Observations et mesures . 23
9.1 Généralités . 23
9.2 Observations initiales. 23
9.3 Observations d'essai . 23
10 Evaluation des résultats de l’essai . 24
10.1 Critères d'essai . 24
10.2 Indice d’inflammabilité au fil incandescent . 24
11 Rapport d’essai . 24
Bibliographie . 25

Tableau 1 – Températures initiales d'essai . 22

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COMMISSION ÉLECTROTECHNIQUE INTERNATIONALE
____________
ESSAIS RELATIFS AUX RISQUES DU FEU –
Partie 2-12: Essais au fil incandescent/chauffant –
Méthode d'essai d'indice d’inflammabilité au fil incandescent
(GWFI) pour matériaux
AVANT-PROPOS
1) La Commission Electrotechnique Internationale (CEI) est une organisation mondiale de normalisation composée
de l'ensemble des comités électrotechniques nationaux (Comités nationaux de la CEI). La CEI a pour objet de
favoriser la coopération internationale pour toutes les questions de normalisation dans les domaines de
l'électricité et de l'électronique. A cet effet, la CEI – entre autres activités – publie des Normes internationales,
des Spécifications techniques, des Rapports techniques, des Spécifications accessibles au public (PAS) et des
Guides (ci-après dénommés "Publication(s) de la CEI"). Leur élaboration est confiée à des comités d'études,
aux travaux desquels tout Comité national intéressé par le sujet traité peut participer. Les organisations
internationales, gouvernementales et non gouvernementales, en liaison avec la CEI, participent également aux
travaux. La CEI collabore étroitement avec l'Organisation Internationale de Normalisation (ISO), selon des
conditions fixées par accord entre les deux organisations.
2) Les décisions ou accords officiels de la CEI concernant les questions techniques représentent, dans la mesure
du possible, un accord international sur les sujets étudiés, étant donné que les Comités nationaux de la CEI
intéressés sont représentés dans chaque comité d’études.
3) Les Publications de la CEI se présentent sous la forme de recommandations internationales et sont agréées
comme telles par les Comités nationaux de la CEI. Tous les efforts raisonnables sont entrepris afin que la CEI
s'assure de l'exactitude du contenu technique de ses publications; la CEI ne peut pas être tenue responsable de
l'éventuelle mauvaise utilisation ou interprétation qui en est faite par un quelconque utilisateur final.
4) Dans le but d'encourager l'uniformité internationale, les Comités nationaux de la CEI s'engagent, dans toute la
mesure possible, à appliquer de façon transparente les Publications de la CEI dans leurs publications
nationales et régionales. Toutes divergences entre toutes Publications de la CEI et toutes publications
nationales ou régionales correspondantes doivent être indiquées en termes clairs dans ces dernières.
5) La CEI elle-même ne fournit aucune attestation de conformité. Des organismes de certification indépendants
fournissent des services d'évaluation de conformité et, dans certains secteurs, accèdent aux marques de
conformité de la CEI. La CEI n'est responsable d'aucun des services effectués par les organismes de
certification indépendants.
6) Tous les utilisateurs doivent s'assurer qu'ils sont en possession de la dernière édition de cette publication.
7) Aucune responsabilité ne doit être imputée à la CEI, à ses administrateurs, employés, auxiliaires ou
mandataires, y compris ses experts particuliers et les membres de ses comités d'études et des Comités
nationaux de la CEI, pour tout préjudice causé en cas de dommages corpore
...