iTeh StandardsiTeh Standards
EURUSD
Your shopping cart is empty.
IEC

IEC 60695-1-12:2015

(Main)

Fire hazard testing - Part 1-12: Guidance for assessing the fire hazard of electrotechnical products - Fire safety engineering

Fire hazard testing - Part 1-12: Guidance for assessing the fire hazard of electrotechnical products - Fire safety engineering

IEC 60695-1-12:2015 is intended as a general guideline for IEC Product Committees and provides:
- an explanation of the principles and uses of fire safety engineering;
- guidance on the use of fire safety engineering in the design of electrotechnical products;
- fire safety engineering terminology and concepts;
- an indication of properties, data and tests needed for input into fire safety engineering assessments and
- informative references. This international standard is not intended to be a detailed technical design guide, but is intended to provide guidance for product committees on fire safety engineering methods and performance based test information needs for use in performance based designs and fire hazard assessments of electrotechnical materials, assemblies, products and systems.
Key words: Fire Hazard, Fire Test Method, Fire Safety Engineering
This publication is to be read in conjunction with IEC 60695-1-10:2009 and IEC 60695-1-11:2014.

Essais relatifs aux risques du feu - Partie 1-12: Lignes directrices pour l'évaluation des risques du feu des produits électrotechniques - Ingénierie de la sécurité incendie

L'IEC 60695-1-12:2015 est destinée à indiquer des lignes directrices générales pour les comités de produits de l'IEC et fournit:
- une explication des principes et des usages de l'ingénierie de la sécurité incendie;
- des lignes directrices relatives à l'utilisation de l'ingénierie de la sécurité incendie dans la conception des produits électrotechniques;
- la terminologie et les concepts relatifs à l'ingénierie de la sécurité incendie;
- une indication des propriétés, données et essais nécessaires pour alimenter les évaluations d'ingénierie de la sécurité incendie et
- des références informatives. La présente Norme internationale n'est pas destinée à constituer un guide de conception technique détaillé, mais elle vise à fournir des lignes directrices aux comités de produits concernant les méthodes d'ingénierie de la sécurité incendie et les besoins d'informations d'essais axés sur la performance utilisables pour les conceptions axées sur la performance et les évaluations du danger du feu des matériaux, ensembles, produits et systèmes électrotechniques.
Mots-clés: Risques du feu, méthodes d'essai au feu, Ingénierie de la sécurité du feu
Cette publication doit être lue conjointement avec la CEI 60695-1-10:2009 et la CEI 60695-1-11:2014.

General Information

Status
Published
Publication Date
19-Jan-2015
ICS
01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
13.220.40 - Ignitability and burning behaviour of materials and products
29.020 - Electrical engineering in general
Technical Committee
TC 89 - Fire hazard testing
Drafting Committee
WG 11 - TC 89/WG 11
Current Stage
PPUB - Publication issued
Start Date
31-Dec-2014
Completion Date
20-Jan-2015
Ref Project

Buy Standard

IEC 60695-1-12:2015 - Fire hazard testing - Part 1-12: Guidance for assessing the fire hazard of electrotechnical products - Fire safety engineeringIEC 60695-1-12:2015 - Fire hazard testing - Part 1-12: Guidance for assessing the fire hazard of electrotechnical products - Fire safety engineering
PreviousNext
Standard
IEC 60695-1-12:2015 - Fire hazard testing - Part 1-12: Guidance for assessing the fire hazard of electrotechnical products - Fire safety engineering
English and French language
65 pages
sale 15% off
Preview
sale 15% off
Preview

Standards Content (Sample)


IEC 60695-1-12 ®
Edition 1.0 2015-01
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
BASIC SAFETY PUBLICATION
PUBLICATION FONDAMENTALE DE SÉCURITÉ
Fire hazard testing –
Part 1-12: Guidance for assessing the fire hazard of electrotechnical products –
Fire safety engineering
Essais relatifs aux risques du feu –
Partie 1-12: Lignes directrices pour l'évaluation des risques du feu des produits
électrotechniques – Ingénierie de la sécurité incendie

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.

Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite
ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie
et les microfilms, sans l'accord écrit de l'IEC ou du Comité national de l'IEC du pays du demandeur. Si vous avez des
questions sur le copyright de l'IEC ou si vous désirez obtenir des droits supplémentaires sur cette publication, utilisez
les coordonnées ci-après ou contactez le Comité national de l'IEC de votre pays de résidence.

IEC Central Office Tel.: +41 22 919 02 11
3, rue de Varembé Fax: +41 22 919 03 00
CH-1211 Geneva 20 info@iec.ch
Switzerland www.iec.ch
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 corrigenda or an amendment might have been published.

IEC Catalogue - webstore.iec.ch/catalogue Electropedia - www.electropedia.org
The stand-alone application for consulting the entire The world's leading online dictionary of electronic and
bibliographical information on IEC International Standards, electrical terms containing more than 30 000 terms and
Technical Specifications, Technical Reports and other definitions in English and French, with equivalent terms in 15
documents. Available for PC, Mac OS, Android Tablets and additional languages. Also known as the International
iPad. Electrotechnical Vocabulary (IEV) online.

IEC publications search - www.iec.ch/searchpub IEC Glossary - std.iec.ch/glossary
The advanced search enables to find IEC publications by a More than 60 000 electrotechnical terminology entries in
variety of criteria (reference number, text, technical English and French extracted from the Terms and Definitions
committee,…). It also gives information on projects, replaced clause of IEC publications issued since 2002. Some entries
and withdrawn publications. have been collected from earlier publications of IEC TC 37,

77, 86 and CISPR.
IEC Just Published - webstore.iec.ch/justpublished
Stay up to date on all new IEC publications. Just Published IEC Customer Service Centre - webstore.iec.ch/csc
details all new publications released. Available online and If you wish to give us your feedback on this publication or
also once a month by email. need further assistance, please contact the Customer Service
Centre: csc@iec.ch.
A propos de l'IEC
La Commission Electrotechnique Internationale (IEC) est la première organisation mondiale qui élabore et publie des
Normes internationales pour tout ce qui a trait à l'électricité, à l'électronique et aux technologies apparentées.

A propos des publications IEC
Le contenu technique des publications IEC est constamment revu. Veuillez vous assurer que vous possédez l’édition la
plus récente, un corrigendum ou amendement peut avoir été publié.

Catalogue IEC - webstore.iec.ch/catalogue Electropedia - www.electropedia.org
Application autonome pour consulter tous les renseignements
Le premier dictionnaire en ligne de termes électroniques et
bibliographiques sur les Normes internationales,
électriques. Il contient plus de 30 000 termes et définitions en
Spécifications techniques, Rapports techniques et autres
anglais et en français, ainsi que les termes équivalents dans
documents de l'IEC. Disponible pour PC, Mac OS, tablettes
15 langues additionnelles. Egalement appelé Vocabulaire
Android et iPad.
Electrotechnique International (IEV) en ligne.

Recherche de publications IEC - www.iec.ch/searchpub
Glossaire IEC - std.iec.ch/glossary
Plus de 60 000 entrées terminologiques électrotechniques, en
La recherche avancée permet de trouver des publications IEC
en utilisant différents critères (numéro de référence, texte, anglais et en français, extraites des articles Termes et
comité d’études,…). Elle donne aussi des informations sur les Définitions des publications IEC parues depuis 2002. Plus
projets et les publications remplacées ou retirées. certaines entrées antérieures extraites des publications des

CE 37, 77, 86 et CISPR de l'IEC.
IEC Just Published - webstore.iec.ch/justpublished

Service Clients - webstore.iec.ch/csc
Restez informé sur les nouvelles publications IEC. Just
Published détaille les nouvelles publications parues. Si vous désirez nous donner des commentaires sur cette
Disponible en ligne et aussi une fois par mois par email. publication ou si vous avez des questions contactez-nous:
csc@iec.ch.
IEC 60695-1-12 ®
Edition 1.0 2015-01
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
BASIC SAFETY PUBLICATION
PUBLICATION FONDAMENTALE DE SÉCURITÉ

Fire hazard testing –
Part 1-12: Guidance for assessing the fire hazard of electrotechnical products –

Fire safety engineering
Essais relatifs aux risques du feu –

Partie 1-12: Lignes directrices pour l'évaluation des risques du feu des produits

électrotechniques – Ingénierie de la sécurité incendie

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 13.220.40; 29.020 ISBN 978-2-8322-1960-7

– 2 – IEC 60695-1-12:2015 © IEC 2015
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative References . 7
3 Terms and Definitions . 8
4 The fire safety engineering process . 14
4.1 General . 14
4.2 Fire safety engineering calculations . 15
4.3 Validity of methods . 15
5 Benefits of fire safety engineering . 16
6 Objectives, requirements and performance . 17
6.1 Fire safety engineering objectives. 17
6.1.1 General . 17
6.1.2 Safety of life . 17
6.1.3 Conservation of property . 17
6.1.4 Continuity of operations . 17
6.1.5 Protection of the natural environment . 18
6.1.6 Preservation of heritage . 18
6.2 Functional requirements . 18
6.3 Performance criteria . 18
6.3.1 General . 18
6.3.2 Explicit performance criteria . 18
6.3.3 Implicit performance criteria . 19
7 Design fire scenarios and design fires . 19
7.1 Design fire scenarios . 19
7.2 Design fires. 20
8 Data for fire safety engineering . 20
9 Tests on electrotechnical products . 21
9.1 General . 21
9.2 Conditions for evaluation in fire tests . 21
9.3 Electrotechnical product evaluations . 21
9.3.1 As the source of ignition of a fire . 21
9.3.2 As the victim of a fire . 22
9.4 Test selection and/or development . 22
Annex A (informative) A probabilistic fire risk assessment . 24
A.1 The assessment of a fire risk in accordance with the Russian national
standard GOST 12.1.004-91 [38] . 24
A.1.1 Introduction . 24
A.1.2 Probability Q . 24
fc
A.1.3 Probability Q . 25
fv
A.1.4 Probability Q . 25
pf
A.1.5 Probability Q . 25
ign
A.2 Example. 26
A.2.1 General . 26
A.2.2 Test data . 27

A.2.3 Calculation . 27
Bibliography . 29

Figure 1 – Flowchart illustrating an example of the fire safety engineering process as
applied to a major project in the built environment . 16

Table 1 – Examples of design fire scenarios . 19
Table 2 – Common ignition phenomena encountered in electrotechnical products . 23
Table A.1 – Long start-up mode: enclosure (shell) temperatures in the most heated up-
point . 27
Table A.2 – The enclosure temperature at the most heated point when working under
abnormal conditions . 28
Table A.3 – Failure data for abnormal operation . 28

– 4 – IEC 60695-1-12:2015 © IEC 2015
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FIRE HAZARD TESTING –
Part 1-12: Guidance for assessing
the fire hazard of electrotechnical products –
Fire safety engineering
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 or
...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.

This May Also Interest You

IEC
IEC TS 60695-1-14:2017(Main)
Fire hazard testing - Part 1-14: Guidance on the different levels of power and energy related to the probability of ignition and fire in low voltage electrotechnical products

IEC TS 60695-1-14:2017(E) provides guidance about the levels of power and energy that could cause ignition and fire in a low voltage electrotechnical product. It can be used by Product Committees to determine what fire hazard safeguards might be used, based on the electrical energy that could be dissipated as heat.
This document deals with products used in normal atmospheres commonly available in the home and does not deal with special locations such as those in explosive atmospheres. It is intended as guidance to IEC committees, and is intended be used with respect to their individual applications.
It has the status of a basic safety publication in accordance with IEC Guide 104 and ISO/IEC Guide 51.
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.
Key words: Fire Hazard, Probability of Ignition, Power and Energy Levels

  • Technical specification
    15 pages
    English language
    sale 15% off
IEC
IEC 60695-1-30:2017(Main)
Fire hazard testing - Part 1-30: Guidance for assessing the fire hazard of electrotechnical products - Preselection testing process - General guidelines

IEC 60695-1-30:2017 provides guidance for assessing and choosing candidate materials, components or sub-assemblies for making an end product based upon preselection testing.
It describes how preselection provides comparative fire hazard test methods to evaluate the performance of a test specimen and how preselection can be used in the selection of materials, parts, components and sub-assemblies during the design stage of an end product. It further describes how standardized test methods may be used as one part in the decision making processes directed to minimize the fire hazards from electrotechnical equipment. It takes into account the desired reaction to fire properties of the end product, and the possible effects of environmental conditions on the behaviour of the end product.
This third edition cancels and replaces the second edition published in 2008. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
- Reference to IEC 60695-1-12;
- Modified Introduction;
- Clause 2: updated and additional normative references;
- Clause 3: updated and additional terms and definitions;
- Clause 4: updated text, with a requirement and normative reference to IEC 60695-1-10, IEC 60695-1-11 and IEC 60695-1-12;
- Clause 5: modified text;
- Annex A: updated references with additions and deletions;
- Annex B: Examples of materials used in attended appliances replaces the previous example of an ITE product and the Bibliographic references updated.
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 60695-1-10:2016 and IEC 60695-1-11:2014.
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.

  • Standard
    31 pages
    English and French language
    sale 15% off
IEC
IEC 60695-11-5:2016(Main)
Fire hazard testing - Part 11-5: Test flames - Needle-flame test method - Apparatus, confirmatory test arrangement and guidance

IEC 60695-11-5:2016 is also available as IEC 60695-11-5:2016 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.
IEC 60695-11-5:2016 specifies a needle-flame test to simulate the effect of a small flame which may result from fault conditions, in order to assess the fire hazard by a simulation technique. The results of this test may be used as elements of a fire hazard assessment which takes into account all of the factors which are pertinent to an assessment of the fire hazard of a particular end use. It is applicable to electrotechnical equipment, its sub-assemblies and components and to solid electrical insulating materials or other combustible materials. This second edition cancels and replaces the first edition published in 2004. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- The scope has been broadened to allow this test method to also simulate the effects of small flames from outside the equipment;
- Propane and butane gas are the specified fuel source with a minimum purity of 95 %;
- A new concept has been added which allows the burner to be moved during the test to avoid dripping material from falling onto the tip of the burner tube;
- The burner tube material is now a referenced source;
- The reference for the copper block material has changed - the ISO publication (ISO 1337) has been withdrawn with no replacement. A new callout is now used and Informative Annex C and a bibliography have been added. 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.

  • Standard
    70 pages
    English language
    sale 15% off
  • Standard
    45 pages
    English and French language
    sale 15% off
IEC
IEC 60695-1-10:2016(Main)
Fire hazard testing - Part 1-10: Guidance for assessing the fire hazard of electrotechnical products - General guidelines

IEC 60695-1-10:2016 provides general guidance with respect to fire hazard testing on how to reduce to a tolerable level the risk of fire and the potential effects of fires involving electrotechnical products. It also serves as a signpost standard to the other guidance publications in the IEC 60695 series. It does not give guidance on the use of fire-resistant compartment boundaries or on the use of detection and suppression systems for the mitigation of fire risk. It describes the relationship between fire risk and the potential effects of fire, and provides guidance to IEC product committees on the applicability of qualitative and quantitative fire tests to the fire hazard assessment of electrotechnical products. Details of the calculation of fire risk are not included in the scope of this document. It emphasises the importance of the scenario approach to fire hazard and risk assessment and discusses criteria intended to ensure the development of technically sound hazard-based fire test methods. It discusses the different types of fire tests, in particular the nature of qualitative and quantitative fire tests. It also describes the circumstances under which it is appropriate for IEC product committees to maintain or develop qualitative fire tests. This standard is intended as guidance to IEC committees, and is to be used with respect to their individual applications. This second edition cancels and replaces the first edition published in 2009. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- reference to IEC 60695-1-12;
- modified Introduction and Scope;
- updated normative references;
- updated terms and definitions;
- modified Table 1;
- addition of Table 2;
- new text in Subclauses 5.2, 5.3 and 5.4;
- mandatory text in Clause 8;
- Annex B changed to Annex A, and modified;
- new Annex B concerning common ignition sources.
This publication is to be read in conjunction with IEC 60695-1-11:2014 and IEC 60695-1-12:2015.
Key words: Fire Hazard, Fire Risk, Fire Safety Engineering

  • Standard
    77 pages
    English language
    sale 15% off
  • Standard
    49 pages
    English and French language
    sale 15% off
IEC
IEC 60695-8-2:2016(Main)
Fire hazard testing - Part 8-2: Heat release - Summary and relevance of test methods

IEC 60695-8-2:2016 presents a summary of published test methods that are relevant to the determination of the heat released in fire tests on electrotechnical products or materials from which they are formed. It represents the current state of the art of the test methods and, where available, includes special observations on their relevance and use. The list of test methods is not to be considered exhaustive, and test methods that were not developed by the IEC are not to be considered as endorsed by the IEC unless this is specifically stated. Heat release data can be used as part of fire hazard assessment and in fire safety engineering, as discussed in IEC 60695-1-10, IEC 60695-1-11 and IEC 60695-1-12. This standard is to be used in conjunction with IEC 60695-8-1.
Key words: Fire Hazard, Heat Release, Fire Safety Engineering, Test Methods

  • Standard
    54 pages
    English and French language
    sale 15% off
IEC
IEC 60695-8-1:2016(Main)
Fire hazard testing - Part 8-1: Heat release - General guidance

IEC 60695-8-1:2016 provides guidance on the measurement and interpretation of heat release from electrotechnical products and materials from which they are constructed. Heat release data can be used as part of fire hazard assessment and in fire safety engineering, as described in IEC 60695-1-11 and IEC 60695-1-12. This third edition cancels and replaces the second edition published in 2008. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- a modified Introduction;
- reference to IEC 60695-1-12;
- updated normative references;
- revised terms and definitions;
- new text in 4.2.2, 4.2.3, 6.1 and 6.4, including several mandatory statements and
- mandatory statements in a new Subclause 6.5. This standard is to be used in conjunction with IEC 60695-8-2.
Key words: Fire Hazard, Heat Release, Fire Safety Engineering

  • Standard
    54 pages
    English and French language
    sale 15% off
IEC
IEC 60695-1-21:2016(Main)
Fire hazard testing - Part 1-21: Guidance for assessing the fire hazard of electrotechnical products - Ignitability - Summary and relevance of test methods

IEC 60695-1-21:2016 provides a summary of test methods that are used to determine the ignitability of electrotechnical products or materials from which they are formed. It also includes test methods in which, by design, ignitability is a significant quantifiable characteristic. It represents the current state of the art of the test methods and, where available, includes special observations on their relevance and use. The list of test methods is not to be considered exhaustive, and test methods which were not developed by the IEC are not to be considered as endorsed by the IEC unless this is specifically stated. This basic safety publication is primarily intended for use by technical committees in the preparation of standards in accordance with IEC Guide 104 and ISO/IEC Guide 51. It is not intended for use by manufacturers or certification bodies. This first edition of IEC 60695-1-21 cancels and replaces the first edition of IEC TR 60695-1-21 published in 2008. It constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- Change from a TR to an international standard;
- Modified Introduction;
- Modified Scope;
- Updated normative references;
- Updated terms and definitions;
- Updates and new text in Clause 4;
- Addition of text concerning ASTM D 3638;
- Updates to Annex A and Updates to the bibliography. Key words: Fire Hazard, Fire Safety Engineering, Ignitability.

  • Standard
    69 pages
    English and French language
    sale 15% off
IEC
IEC 60695-10-3:2016(Main)
Fire hazard testing - Part 10-3: Abnormal heat - Mould stress relief distortion test

IEC 60695-10-3:2016 specifies a mould stress relief distortion test. It is applicable to electrotechnical equipment including parts made from polymeric materials. This test method is intended to evaluate the effects caused by relief of the residual process-induced stress, set in a moulded polymeric assembly of an end product. This stress relief occurs when the sample (energized or not), is exposed to conditioning at a defined temperature for a defined period of time. The test specimen is considered to have satisfactorily withstood the test if, after conditioning to room temperature, it meets defined test criteria. This basic safety publication is primarily 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. It is not intended for use by manufacturers or certification bodies. This second edition of IEC 60695-10-3 cancels and replaces the first edition issued in 2002. It constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- Updated references;
- Updated equipment;
- Added terms and definitions;
- and added Bibliography. Key words: Fire Hazard, Abnormal Heat, Fire Safety Engineering, Mould Stress Relief Distortion Test.

  • Standard
    21 pages
    English and French language
    sale 15% off
IEC
IEC 60695-1-20:2016(Main)
Fire hazard testing - Part 1-20: Guidance for assessing the fire hazard of electrotechnical products - Ignitability - General guidance

IEC 60695-1-20:2016 provides guidance on the ignitability of electrotechnical products and the materials from which they are formed. It gives guidance on the principles of ignitability; the selection of appropriate test methods and the use and interpretation of results. This first edition of IEC 60695-1-20 cancels and replaces the first edition of IEC TS 60695-1-20 published in 2008. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- ISO 5660-1 has been added to the normative references;
- definitions of pyrolysis and short-circuit have been added to Clause 3;
- some text from the introduction has been moved to Clause 5 and is now part of the normative text and Clause 5 now contains several mandatory statements. This part of IEC 60695 is intended for use by technical committees in preparation of standards in accordance with IEC Guide 104 and ISO/IEC Guide 51. Key words: Fire Hazard, Fire Test Method, Fire Safety Engineering, Ignitability.

  • Standard
    46 pages
    English and French language
    sale 15% off
IEC
IEC 60695-11-20:2015(Main)
Fire hazard testing - Part 11-20: Test flames - 500 W flame test method

IEC 60695-11-20:2015 describes a test method consisting of two small-scale laboratory test procedures which is intended to compare the burning behaviour of different materials used in electrotechnical products. Vertically oriented bar specimens or horizontally oriented plate test specimens are exposed to a small flame ignition source with a nominal thermal power of 500 W. The test method uses two test specimen configurations to classify material performance. Rectangular bar-shaped test specimens are used to assess ignitability and burning behaviour, and square plate test specimens are used to assess the resistance of the test specimen to burn-through, as defined in 8.3.3. This test method only applies to materials that have been classified as V-0 or V-1 according to IEC 60695-11-10. This test method is only applicable to solid and cellular materials that have an apparent density of more than 250 kg/m3, determined in accordance with ISO 845. The method does not apply to materials that shrink away from the applied flame without igniting due to their thinness. The test method described provides classifications which may be used for quality assurance, the pre-selection of component materials of products, or to verify the required minimum flammability classification of materials used in end products. If used for pre-selection, then positive results shall be obtained at a test specimen thickness which equals the smallest thickness used in the product application. The results obtained provide some information about the behaviour of materials in service, but cannot by themselves assure safe performance in service. This second edition cancels and replaces the consolidated version of IEC 60695-11-20 published in 2003. This edition constitutes a technical revision. The main changes with respect to the first edition are as follows:
- The Part title has been modified to the singular - 500 W flame test method;
- Editorial changes have been made throughout the document for the purpose of aligning IEC 60695-11-10 with IEC 60695-11-20;
- The Introduction has been modified to clarify the description of the test method;
- The Scope has been modified for clarification;
- All occurrences of the term "fixture" have been deleted from the document;
- Preferred thickness values have been added to 7.2 and 7.3;
- 7.4.4: 'Thickness measurement' is now numbered 7.5 to which a new Table 1 - Thickness tolerances has been added;
- New Subclause 8.1.4 'Conditioning of the cotton pad' has been added;
- 8.2.3 clarifies the application of the test flame to distorted specimens;
- Explanatory notes have been added to Figures 5 and 6 and the Bibliography has been updated and references added. This basic safety publication is intended for use by technical committees in the preparation of standards in accordance with IEC Guide 104 and ISO/IEC Guide 51. Key words: Test flames,Fire Hazard, Fire Test Method
This publication is to be read in conjunction with IEC 60695-11-3:2012. The contents of the corrigendum of January 2016 have been included in this copy.

  • Standard
    64 pages
    English and French language
    sale 15% off