EN 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)

This part of IEC 60695 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.

Prüfungen zur Beurteilung der Brandgefahr - Teil 2-11: Prüfverfahren mit dem Glühdraht - Prüfung mit dem Glühdraht zur Entflammbarkeit von Enderzeugnissen (GWEPT)

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

IEC 60695-2-11:2021 est disponible sous forme de IEC 60695-2-11:2021 RLV qui contient la Norme internationale et sa version Redline, illustrant les modifications du contenu technique depuis l'édition précédente. L'IEC 60695-2-11:2021 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.

Preskušanje požarne ogroženosti - 2-11. del: Preskusne metode z žarilno žico - Preskušanje vnetljivosti končnega proizvoda z žarilno žico (GWEPT) (IEC 60695-2-11:2021)

Ta del standarda IEC 60695 določa preskusno metodo za končni proizvod. Namenjena je poustvarjanju učinkov toplotne preobremenitve, ki jo proizvede električno ogrevani vir, s čimer se ponazori požarna ogroženost. Ta preskusna metoda se uporablja za preverjanje, ali ima pod opredeljenimi preskusnimi pogoji končni proizvod, ki je izpostavljen električno ogrevanem viru, omejeno sposobnost vžiga ali, če se vžge, omejeno sposobnost širjenja plamena. Vendar pa v tem dokumentu niso zajeti analiza požarne ogroženosti, vidiki vnetljivosti in širjenje plamena na druge proizvode. Ta osnovna varnostna publikacija, ki se osredotoča na varnostne preskusne metode, je namenjena predvsem tehničnim odborom za pripravo varnostnih publikacij v skladu z načeli vodil IEC 104 in ISO/IEC 51. Ena od dolžnosti tehničnega odbora je, da med pripravo publikacij uporablja osnovne varnostne publikacije, kadar je to primerno.

General Information

• Status: Published
• Publication Date: 02-Dec-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: 03-Dec-2021
• Completion Date: 03-Dec-2021
• Ref Project: SIST EN IEC 60695-2-11:2022 - 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)

Relations

• Replaces: EN 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) (IEC 60695-2-11:2014)
• Effective Date: 17-Sep-2018

Overview

EN 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)" - defines a laboratory test method to evaluate how an end product reacts when contacted by an electrically heated (glow) wire. The GWEPT simulates thermal stresses caused by overheated conductors, bad connections or component faults to determine whether a product has a limited ability to ignite or to propagate flame under defined conditions. This standard is a basic safety publication intended to support technical committees, manufacturers and test laboratories in product safety assessments. It supersedes EN 60695‑2‑11:2014 and is to be used alongside IEC 60695‑2‑10.

Key topics and technical requirements

• Scope and purpose: Specifies a controlled test on complete or partial end‑product specimens to simulate contact with a glowing/hot wire; it does not provide a full fire hazard analysis or assess flame spread to other products.
• Specimen definitions: Requirements for complete end products and alternative partial specimens, with guidance on specimen configuration and limitations.
• Test apparatus and measurement: References the glow‑wire apparatus and common procedures (see IEC 60695‑2‑10); includes verification of the temperature measuring system.
• Conditioning and testing conditions: Specifies conditioning of specimens and layers, and defined environmental/testing conditions prior to and during the test.
• Test procedure and temperatures: Defines general test steps, selectable glow‑wire temperatures (Annex A provides suggested GWEPT temperatures) and the number of specimens to be tested.
• Observations and evaluation: Sets out required observations, measurements and criteria to evaluate ignition and flame propagation, plus mandatory test report content and information that product standards should reference.

Applications and who uses it

• Manufacturers and product designers use GWEPT to evaluate design choices, materials and enclosure safety against thermal ignition from electrical faults.
• Test laboratories and compliance bodies perform standardized glow‑wire flammability tests for product certification and technical file evidence.
• Safety and reliability engineers include GWEPT results as elements of a broader fire hazard assessment for electrical/electronic equipment.
• Standards committees and regulatory authorities reference EN IEC 60695‑2‑11:2021 when preparing or harmonizing product safety standards.

Related standards

• IEC/EN 60695‑2‑10 - glow‑wire apparatus and common test procedure (required companion document)
• IEC 60695‑2‑12 / IEC 60695‑2‑13 - glow‑wire material tests (GWFI, GWIT)
• IEC 60695‑1‑10 / IEC 60695‑1‑11 - guidance on fire hazard evaluation and prevention measures

Keywords: EN IEC 60695-2-11:2021, GWEPT, glow‑wire flammability test, fire hazard testing, glow‑wire, end products, IEC 60695.

Standards Content (Sample)

SLOVENSKI STANDARD
01-februar-2022
Nadomešča:
SIST EN 60695-2-11:2014
Preskušanje požarne ogroženosti - 2-11. del: Preskusne metode z žarilno žico -
Preskušanje vnetljivosti končnega proizvoda z žarilno žico (GWEPT) (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)
Prüfungen zur Beurteilung der Brandgefahr - Teil 2-11: Prüfverfahren mit dem Glühdraht
- Prüfung mit dem Glühdraht zur Entflammbarkeit von Enderzeugnissen (GWEPT) (IEC
60695-2-11:2021)
Essais relatifs aux risques du feu - Partie 2-11: Essais au fil incandescent/chauffant -
Méthode d'essai d'inflammabilité pour produits finis (GWEPT) (IEC 60695-2-11:2021)
Ta slovenski standard je istoveten z: EN IEC 60695-2-11:2021
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 60695-2-11

NORME EUROPÉENNE
EUROPÄISCHE NORM December 2021
ICS 13.220.40; 29.020 Supersedes EN 60695-2-11:2014 and all of its
amendments and corrigenda (if any)
English Version
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)
Essais relatifs aux risques du feu - Partie 2-11: Essais au fil Prüfungen zur Beurteilung der Brandgefahr - Teil 2-11:
incandescent/chauffant - Méthode d'essai d'inflammabilité Prüfverfahren mit dem Glühdraht - Prüfung mit dem
pour produits finis (GWEPT) Glühdraht zur Entflammbarkeit von Enderzeugnissen
(IEC 60695-2-11:2021) (GWEPT)
(IEC 60695-2-11:2021)
This European Standard was approved by CENELEC on 2021-12-02. 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 60695-2-11:2021 E

European foreword
The text of document 89/1536/FDIS, future edition 3 of IEC 60695-2-11, 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) 2022–09–02
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2024–12–02
document have to be withdrawn
This document supersedes EN 60695-2-11:2014 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 60695-2-11:2021 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 60695-2-12 NOTE Harmonized as EN 60695-2-12
IEC 60695-2-13 NOTE Harmonized as EN IEC 60695-2-13
IEC 60335-1 NOTE Harmonized as EN 60335-1
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 IEC 60695-2-10 -
Glowing/hot-wire based test methods -
Glow-wire apparatus and common test
procedure
IEC 60695-4 2012 Fire hazard testing - Part 4: Terminology EN 60695-4 2012
concerning fire tests for electrotechnical
products
ISO 13943 2017 Fire safety - Vocabulary EN ISO 13943 2017

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

IEC 60695-2-11:2021 © IEC 2021 – 3 –
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
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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.
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 60695-2-10.
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.

IEC 60695-2-11:2021 © IEC 2021 – 5 –
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 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 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] describes a glow-wire flammability index (GWFI) test method for materials, and
IEC 60695-2-13 [4] describes a glow-wire ignition tempera
...