CLC/TS 62441:2012

Safeguards against accidentally caused candle flame ignition for audio/video, communication and information technology equipment

IEC/TS 62441:2011 Introduces safeguards to reduce the likelihood of room flash-over as a result of accidental ignition of exterior housings of audio/video and information communication technology products likely to be used in the home, caused by a candle flame. This second edition of IEC 62441 cancels and replaces the first edition published in 2006 and constitutes a technical revision. This edition includes the following technical changes with respect to the previous edition: - acceptance of wood with a minimum thickness as equivalent to V-1; - interpretation information regarding vertical surfaces.

Schutzmaßnahmen gegen zufällige Entzündung von Geräten der Audio/Video-, Kommunikations- und Informationstechnologie durch Kerzenflamme

Mesures de protection contre l'embrasement accidentel dû à une flamme de bougie dans les équipements audio/vidéo, des technologies de la communication et de l'information

La CEI/TS 62441:2011 introduit des mesures de protection destinées à réduire les risques d'embrasement éclair d'une pièce dû à une flamme de bougie, résultant de l'embrasement accidentel de l'habillage extérieur des appareils audio/vidéo, des appareils de technologies de l'information et de la communication, utilisés généralement en milieu résidentiel. Cette deuxième édition de la CEI 62441 annule et remplace la première édition parue en 2006 et constitue une révision technique. Cette édition comprend les changements suivants par rapport à l'édition précédente: - acceptation du bois avec une épaisseur minimum équivalente à V-1; - information sur l'interprétation concernant les surfaces verticales.

Varnostni ukrepi pred naključno povzročenim vžigom s plamenom sveče pri avdio/video, komunikacijski in informacijski opremi

Ta tehnična specifikacija uvaja varnostne ukrepe za zmanjšanje nevarnosti notranjega požarnega preskoka zaradi naključno povzročenega vžiga s plamenom sveče pri ohišju avdio/video, informacijske in komunikacijske opreme.

General Information

• Status: Published
• Publication Date: 23-Feb-2012
• ICS: 35.260 - Office machines
• ICS: 97.020 - Home economics in general
• Technical Committee: CLC/TC 108X - Safety of electronic equipment within the fields of Audio/Video, Information Technology and Communication Technology
• Drafting Committee: IEC/TC 108 - IEC_TC_108
• Current Stage: 6060 - Document made available - Publishing
• Start Date: 24-Feb-2012
• Completion Date: 24-Feb-2012
• Ref Project: SIST-TS CLC/TS 62441:2012 - Safeguards against accidentally caused candle flame ignition for audio/video, communication and information technology equipment

Overview

CLC/TS 62441:2012 (adopting IEC/TS 62441:2011) is a Technical Specification that provides safeguards against accidental candle-flame ignition of exterior housings for audio/video, communication and information technology (ICT) equipment. Its aim is to reduce the likelihood of a candle-ignited housing leading to room flash‑over. This second edition replaces the 2006 edition and includes technical updates such as the acceptance of wood of minimum thickness as equivalent to V‑1 and clarified interpretation for vertical surfaces.

Key topics and technical requirements

• Scope and applicability: Primarily intended for television sets; may be applied to other AV/ICT products where a risk assessment indicates problems.
• Combustibility definition: Materials that can be ignited by a candle flame are considered combustible; metals and ceramics are not, and all plastics are treated as combustible regardless of flammability rating.
• Flammability classification: Uses established material classes (V‑0, V‑1, 5VA, 5VB) per IEC 60695 series; the specification ranks classes when applying requirements (e.g., 5VA > 5VB > V‑0 > V‑1).
• Test methodology elements:
  • Determination of candle-flame accessible areas on a product;
  • Conditioning and sample preparation prior to testing;
  • Positioning of the item and of the ignition source (needle‑flame or specified flame tests);
  • Ignition source and prescribed flame tests to assess sustained flaming and propagation.
• Sustained flaming test: Procedures to confirm whether ignition leads to sustained flaming of the housing, with pass/fail criteria given in the TS.
• Technical notes: The TS discusses a proposed Heat Release Rate (pHRR) approach (50 kW recommended by a Fire Team) but states pHRR requirements were not included normatively due to reproducibility issues.

Practical applications - who should use it

• Product designers and manufacturers of TVs, set‑top boxes, monitors, speakers and other AV/ICT housings - to design enclosures that reduce candle-ignition risk.
• Safety engineers and compliance specialists - to assess fire risk, perform required tests, and document conformity.
• Test labs and certification bodies - to implement the specified test arrangements (needle-flame, 50 W/500 W flame methods) and interpret results.
• Regulatory and standards teams - as guidance when performing risk assessments for household AV/ICT products.

Related standards

• IEC 60695-11-5 - Needle-flame test method (apparatus and guidance)
• IEC 60695-11-10 - 50 W horizontal and vertical flame test methods
• IEC 60695-11-20 - 500 W flame test methods

These referenced IEC 60695 parts are normative for test methods used in CLC/TS 62441.

Keywords: candle flame ignition, IEC/TS 62441, CLC/TS 62441, audio/video equipment safety, ICT equipment, room flash-over, flammability classification, needle‑flame test, sustained flaming.

Standards Content (Sample)

SLOVENSKI STANDARD
01-maj-2012
1DGRPHãþD
SIST-TS CLC/TS 62441:2007
9DUQRVWQLXNUHSLSUHGQDNOMXþQRSRY]URþHQLPYåLJRPVSODPHQRPVYHþHSUL
DYGLRYLGHRNRPXQLNDFLMVNLLQLQIRUPDFLMVNLRSUHPL
Safeguards against accidentally caused candle flame ignition for audio/video,
communication and information technology equipment
Schutzmaßnahmen gegen zufällige Entzündung von Geräten der Audio/Video-,
Kommunikations- und Informationstechnologie durch Kerzenflamme
Mesures de protection contre l'embrasement accidentel dû à une flamme de bougie dans
les équipements audio/vidéo, des technologies de la communication et de l'information
Ta slovenski standard je istoveten z: CLC/TS 62441:2012
ICS:
13.220.40 Sposobnost vžiga in Ignitability and burning
obnašanje materialov in behaviour of materials and
proizvodov pri gorenju products
35.020 Informacijska tehnika in Information technology (IT) in
tehnologija na splošno general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

TECHNICAL SPECIFICATION
CLC/TS 62441
SPÉCIFICATION TECHNIQUE
February 2012
TECHNISCHE SPEZIFIKATION
ICS 35.260; 97.020 Supersedes CLC/TS 62441:2007

English version
Safeguards against accidentally caused candle flame ignition for
audio/video, communication and information technology equipment
(IEC/TS 62441:2011)
Mesures de protection contre Schutzmaßnahmen gegen zufällige
l'embrasement accidentel dû à une Entzündung von Geräten der Audio/Video-
flamme de bougie dans les équipements , Kommunikations- und
audio/vidéo, des technologies de la Informationstechnologie durch
communication et de l'information Kerzenflamme
(CEI/TS 62441:2011) (IEC/TS 62441:2011)

This Technical Specification was approved by CENELEC on 2012-01-23.

CENELEC members are required to announce the existence of this TS in the same way as for an EN and to
make the TS available promptly at national level in an appropriate form. It is permissible to keep conflicting
national standards in force.
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, Romania, Slovakia, Slovenia,
Spain, Sweden, Switzerland, Turkey and the United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Management Centre: Avenue Marnix 17, B - 1000 Brussels

© 2012 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. CLC/TS 62441:2012 E
Foreword
This document (CLC/TS 62441:2012) consists of the text of IEC/TS 62441:2011 prepared by
IEC/TC 108 "Safety of electronic equipment within the field of audio/video, information technology and
communication technology".
This document supersedes CLC/TS 62441:2007.
CLC/TS 62441:2007:
– acceptance of wood with a minimum thickness as equivalent to V-1;
– interpretation information regarding vertical surfaces.
The following print types are used:
– requirements proper and normative annexes: in roman type;
– compliance statements and test specifications: in italic type;
– notes/explanatory matter: in small roman type;
– terms that are defined in Clause 3: bold.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such
patent rights.
Endorsement notice
The text of the International Standard IEC/TS 62441:2011 was approved by CENELEC as a Technical
Specification without any modification.

– 3 – CLC/TS 62441:2012
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
NOTE  Where an International Publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
Publication Year Title EN/HD Year
IEC 60695-11-5 - Fire hazard testing EN 60695-11-5 -
Part 11-5: Test flames - Needle-flame test
method - Apparatus, confirmatory test
arrangement and guidance
IEC 60695-11-10 - Fire hazard testing EN 60695-11-10 -
Part 11-10: Test flames - 50 W horizontal and
vertical flame test methods
IEC 60695-11-20 - Fire hazard testing EN 60695-11-20 -
Part 11-20: Test flames - 500 W flame test
methods
IEC/TS 62441 ®
Edition 2.0 2011-02
TECHNICAL
SPECIFICATION
SPÉCIFICATION
TECHNIQUE
colour
inside
Safeguards against accidentally caused candle flame ignition
for audio/video, communication and information technology equipment

Mesures de protection contre l’embrasement accidentel dû à une flamme de
bougie dans les équipements audio/video, des technologies de la
communication et de l'information

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX L
ICS 35.260; 97.020 ISBN 978-2-88912-364-3

– 2 – TS 62441  IEC:2011
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Warning for users . 7
5 Control of fire growth . 8
5.1 General . 8
5.2 Determination of candle flame accessible areas . 8
5.3 Test methodology . 9
5.3.1 Conditioning . 9
5.3.2 Positioning the individual item . 9
5.3.3 Ignition source . 10
5.4 Test for sustained flaming . 10
Bibliography . 11

Figure 1 – Examples of candle flame accessible areas . 9
Figure 2 – Positioning of the needle flame burner . 10

TS 62441  IEC:2011 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SAFEGUARDS AGAINST ACCIDENTALLY
CAUSED CANDLE FLAME IGNITION
FOR AUDIO/VIDEO, COMMUNICATION
AND INFORMATION TECHNOLOGY EQUIPMENT

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.
The main task of IEC technical committees is to prepare International Standards. In
exceptional circumstances, a technical committee may propose the publication of a technical
specification when
• the required support cannot be obtained for the publication of an International Standard,
despite repeated efforts, or
• The subject is still under technical development or where, for any other reason, there is
the future but no immediate possibility of an agreement on an International Standard.
Technical specifications are subject to review within three years of publication to decide
whether they can be transformed into International Standards.
IEC 62441, which is a technical specification, has been prepared by IEC technical committee
108: Safety of electronic equipment within the field of audio/video, information technology and
communication technology.
– 4 – TS 62441  IEC:2011
This second edition of IEC 62441 cancels and replaces the first edition published in 2006 and
constitutes a technical revision. This edition includes the following technical changes with
respect to the previous edition:
– acceptance of wood with a minimum thickness as equivalent to V-1;
– interpretation information regarding vertical surfaces.
The text of this technical specification is based on the following documents:
Enquiry draft Report on voting
108/391/DTS 108/412/RVC
Full information on the voting for the approval of this technical specification can be found in
the report on voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
The following print types are used:
– requirements proper and normative annexes: in roman type;
– compliance statements and test specifications: in italic type;
– notes/explanatory matter: in small roman type;
– terms that are defined in Clause 3: bold.
The committee has decided that the contents of this publication will remain unchan
...