EN IEC 60695-2-13:2021

Fire hazard testing - Part 2-13: Glowing/hot-wire based test methods - Glow-wire ignition temperature (GWIT) test method for materials

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 ignitability testing to determine the glow-wire ignition temperature (GWIT). The GWIT is the temperature which is 25 K (or 30 K) higher than the maximum test temperature, determined during this standardized procedure, at which the tested material does not ignite, or sustained flaming combustion does not occur for a time longer than 5 s for any single flame event and the specimen is not totally consumed. This test is a materials test carried out on a series of standard test specimens. The data obtained, along with data from the glow-wire flammability index (GWFI) test method for materials, IEC 60695-2-12, can then be used in a preselection process in accordance with IEC 60695-1-30 [4] 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 can allow a reduction of end product testing. 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.

Prüfungen zur Beurteilung der Brandgefahr - Teil 2-13: Prüfverfahren mit dem Glühdraht - Prüfung mit dem Glühdraht zur Entzündbarkeit (GWIT) von Werkstoffen

Essais relatifs aux risques du feu - Partie 2-13: Essais au fil incandescent/chauffant - Méthode d'essai de température d'allumage au fil incandescent (GWIT) pour matériaux

IEC 60695-2-13:2021 est disponible sous forme de IEC 60695-2-13:2021 RLV qui contient la Norme internationale et sa version Redline, illustrant les modifications du contenu technique depuis l'édition précédente.L'IEC 60695-2-13:2021 décrit l’essai au fil incandescent applicable à des éprouvettes d’essai de matériaux isolants électriques solides ou autres matériaux solides pour les essais d’allumage dans le but de déterminer la température d'allumage au fil incandescent (GWIT, glow-wire ignition temperature). La GWIT est la température qui est supérieure de 25 K (ou 30 K) à la température d'essai maximale, déterminée durant cette procédure normalisée, à laquelle le matériau soumis à l’essai ne s’enflamme pas, ou une combustion avec flamme persistante ne se produit pas pendant une durée supérieure à 5 s pour un événement d’inflammation unique quelconque et l'éprouvette d’essai n'est pas entièrement consumée. Cet essai est un essai de matériaux exécuté sur une série d’éprouvettes d’essai normalisées. Les données obtenues, ainsi que les données issues de la méthode d’essai d'indice d'inflammabilité au fil incandescent (GWFI, glow-wire flammability index) pour matériaux, IEC 60695-2-12, peuvent alors être utilisées dans un processus de présélection conformément à l’IEC 60695-1-30 [4] pour estimer l'aptitude des matériaux à satisfaire aux exigences de l’IEC 60695 2 11. 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 2010 et l'Amendement 1:2014. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente: - Ajout à l’Article 3 de nouveaux termes et définitions, ayant rapport aux moments et durées, applicables à la méthode d'essai.

Preskušanje požarne ogroženosti - 2-13. del: Preskusne metode z žarilno žico - Preskusna metoda za materiale: temperatura vžiga žareče žice (GWIT) (IEC 60695-2-13:2021)

General Information

• Status: Published
• Publication Date: 30-Sep-2021
• ICS: 13.220.40 - Ignitability and burning behaviour of materials and products
• ICS: 29.020 - Electrical engineering in general
• Technical Committee: CLC/SR 89 - Fire hazard testing
• Drafting Committee: IEC/TC 89 - IEC_TC_89
• Current Stage: 6060 - Document made available - Publishing
• Start Date: 01-Oct-2021
• Completion Date: 01-Oct-2021
• Ref Project: SIST EN IEC 60695-2-13:2021 - Fire hazard testing - Part 2-13: Glowing/hot-wire based test methods - Glow-wire ignition temperature (GWIT) test method for materials (IEC 60695-2-13:2021)

Relations

• Replaces: EN 60695-2-13:2010 - Fire hazard testing - Part 2-13: Glowing/hot-wire based test methods - Glow-wire ignition temperature (GWIT) test method for materials
• Effective Date: 05-Oct-2021
• Replaces: EN 60695-2-13:2010/A1:2014 - Fire hazard testing - Part 2-13: Glowing/hot-wire based test methods - Glow-wire ignition temperature (GWIT) test method for materials
• Effective Date: 05-Oct-2021

Overview

EN IEC 60695-2-13:2021 (IEC 60695-2-13) defines the Glow‑wire Ignition Temperature (GWIT) test method for solid electrical insulating materials and other solid materials. This standardized glow‑wire test determines the temperature at which a material does not ignite (or sustain flaming for longer than 5 s) under contact with an electrically heated wire. GWIT results are used in material preselection and fire‑hazard assessment for electrotechnical products.

Key topics and technical requirements

• Scope and purpose: Material ignitability testing using a glowing/hot‑wire to simulate overheated metal parts or fault conditions.
• GWIT definition: The GWIT is the temperature that is 25 K (or 30 K) above the maximum test temperature determined during the procedure where the specimen does not ignite or sustain flaming >5 s for any single flame event and is not totally consumed.
• Test specimens: Preparation, dimensions and acceptable formulation ranges (density, melt flow, filler, colour) are specified to ensure repeatability.
• Apparatus and verification: Use of the glow‑wire apparatus and temperature‑measuring system verification consistent with IEC 60695‑2‑10.
• Conditioning and test conditions: Standardized specimen conditioning and controlled testing atmosphere for reproducible results.
• Test procedure: Initial and stepped test temperatures, observation times and ignition criteria are given to determine GWIT across a series of specimens.
• Observations, evaluation and reporting: Criteria for pass/fail, how to derive GWIT from test outcomes, and required information for the test report.

Practical applications

• Material selection and ranking for electrical insulation, housings, connectors and components where contact with overheated parts is a risk.
• Input to fire‑hazard preselection processes (used together with GWFI results) to help reduce end‑product testing.
• Support for designers and safety engineers aiming to limit ignition risk and confine fire within enclosures of electrotechnical equipment.
• Use in conformity assessment, product safety documentation and supply‑chain material qualification.

Who should use this standard

• Manufacturers of plastics, polymers and insulating materials
• Independent test laboratories and certification bodies
• Product safety and compliance engineers in electronics and electrical sectors
• Standards and technical committees preparing safety publications (in line with IEC Guide 104)

Related standards

• IEC 60695-2-10 (glow‑wire apparatus and common test procedure)
• IEC 60695-2-12 (GWFI - glow‑wire flammability index for materials)
• IEC 60695-2-11 (glow‑wire flammability tests for end products)
• IEC 60695-1-30 (preselection procedure)
• IEC 60695-4, ISO 13943, ISO 291, ISO 294/295 (conditioning and terminology)

Keywords: Glow‑wire ignition temperature, GWIT, IEC 60695‑2‑13, fire hazard testing, glow‑wire test, electrical insulating materials, flammability testing.

Standards Content (Sample)

SLOVENSKI STANDARD
01-december-2021
Nadomešča:
SIST EN 60695-2-13:2011
SIST EN 60695-2-13:2011/A1:2014
Preskušanje požarne ogroženosti - 2-13. del: Preskusne metode z žarilno žico -
Preskusna metoda za materiale: temperatura vžiga žareče žice (GWIT) (IEC 60695-
2-13:2021)
Fire hazard testing - Part 2-13: Glowing/hot-wire based test methods - Glow-wire ignition
temperature (GWIT) test method for materials (IEC 60695-2-13:2021)
Prüfungen zur Beurteilung der Brandgefahr - Teil 2-13: Prüfverfahren mit dem Glühdraht
- Prüfung mit dem Glühdrat zur Entzündbarkeit (GWIT) von Werkstoffen (IEC 60695-2-
13:2021)
Essais relatifs aux risques du feu - Partie 2-13: Essais au fil incandescent/chauffant -
Méthode d'essai de température d'allumage au fil incandescent (GWIT) pour matériaux
(IEC 60695-2-13:2021)
Ta slovenski standard je istoveten z: EN IEC 60695-2-13:2021
ICS:
13.220.40 Sposobnost vžiga in Ignitability and burning
obnašanje materialov in behaviour of materials and
proizvodov pri gorenju products
29.020 Elektrotehnika na splošno Electrical engineering in
general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN IEC 60695-2-13

NORME EUROPÉENNE
EUROPÄISCHE NORM
October 2021
ICS 13.220.40; 29.020 Supersedes EN 60695-2-13:2010 and all of its
amendments and corrigenda (if any)
English Version
Fire hazard testing - Part 2-13: Glowing/hot-wire based test
methods - Glow-wire ignition temperature (GWIT) test method
for materials
(IEC 60695-2-13:2021)
Essais relatifs aux risques du feu - Partie 2-13: Essais au fil Prüfungen zur Beurteilung der Brandgefahr - Teil 2-13:
incandescent/chauffant - Méthode d'essai de température Prüfverfahren mit dem Glühdraht - Prüfung mit dem
d'allumage au fil incandescent (GWIT) pour matériaux Glühdrat zur Entzündbarkeit (GWIT) von Werkstoffen
(IEC 60695-2-13:2021) (IEC 60695-2-13:2021)
This European Standard was approved by CENELEC on 2021-09-28. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2021 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 60695-2-13:2021 E

European foreword
The text of document 89/1538/FDIS, future edition 3 of IEC 60695-2-13, prepared by IEC/TC 89 "Fire
hazard testing" was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2022-06-28
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2024-09-28
document have to be withdrawn
This document supersedes EN 60695-2-13:2010 and all of its amendments and corrigenda (if any).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
Any feedback and questions on this document should be directed to the users’ national committee. A
complete listing of these bodies can be found on the CENELEC website.
Endorsement notice
The text of the International Standard IEC 60695-2-13:2021 was approved by CENELEC as a
European Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards
indicated:
IEC 60695-1-10 NOTE Harmonized as EN 60695-1-10
IEC 60695-1-11 NOTE Harmonized as EN 60695-1-11
IEC 60695-2-11 NOTE Harmonized as EN 60695-2-11
IEC 60695-1-30 NOTE Harmonized as EN 60695-1-30
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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.
NOTE 1  Where an International Publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
NOTE 2  Up-to-date information on the latest versions of the European Standards listed in this annex is available here:
www.cenelec.eu.
Publication Year Title EN/HD Year
IEC 60695-2-10 -  Fire hazard testing - Part 2-10: EN 60695-2-10 -
Glowing/hot-wire based test methods -
Glow-wire apparatus and common test
procedure
IEC 60695-2-12 -  Fire hazard testing - Part 2-12: EN 60695-2-12 -
Glowing/hot-wire based test methods -
Glow-wire flammability index (GWFI) test
method for materials
IEC 60695-4 2021 Fire hazard testing - Part 4: Terminology EN IEC 60695-4 2021
concerning fire tests for electrotechnical
products
ISO 291 2008 Plastics - Standard atmospheres for EN ISO 291 2008
conditioning and testing
ISO 293 -  Plastics – Compression moulding of test - -
specimens of thermoplastic materials
ISO 294 series Plastics – Injection moulding of test EN ISO 294 series
specimens of thermoplastic materials
ISO 295 -  Plastics - Compression moulding of test EN ISO 295 -
specimens of thermosetting materials
ISO 13943 2017 Fire safety – Vocabulary EN ISO 13943 2017

IEC 60695-2-13 ®
Edition 3.0 2021-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
HORIZONTAL PUBLICATION
PUBLICATION HORIZONTALE
Fire hazard testing –
Part 2-13: Glowing/hot-wire based test methods – Glow-wire ignition

temperature (GWIT) test method for materials

Essais relatifs aux risques du feu –

Partie 2-13: Essais au fil incandescent/chauffant – Méthode d’essai de

température d’allumage au fil incandescent (GWIT) pour matériaux

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

– 2 – IEC 60695-2-13:2021 © IEC 2021
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 . 9
4.3.1 General . 9
4.3.2 Density, melt flow, 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 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 Initial observations . 11
9.2 Test observations . 11
10 Evaluation of test results . 11
10.1 Test criteria . 11
10.2 Glow-wire ignition temperature . 11
11 Test report. 12
Bibliography . 13

Table 1 – Initial test temperatures . 10

IEC 60695-2-13:2021 © IEC 2021 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FIRE HAZARD TESTING –
Part 2-13: Glowing/hot-wire based test methods –
Glow-wire ignition temperature (GWIT) 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
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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 60695-2-13 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 2010 and
Amendment 1:2014. 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, with an effect on the application of the test method.

– 4 – IEC 60695-2-13:2021 © IEC 2021
The text of this International Standard is based on the following documents:
FDIS Report on voting
89/1538/FDIS 89/1546/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.
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.
IEC 60695-2-13:2021 © IEC 2021 – 5 –
INTRODUCTION
In the design of any electrotechnical product, the risk of
...