IEC 60695-1-10:2016
(Main)Fire hazard testing - Part 1-10: Guidance for assessing the fire hazard of electrotechnical products - General guidelines
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
Essais relatifs aux risques du feu - Partie 1-10: Lignes directrices pour l'évaluation des risques du feu des produits électrotechniques - Lignes directrices générales
L'IEC 60695-1-10:2016 fournit des lignes directrices générales concernant les essais relatifs aux dangers d'incendie, sur la manière de réduire à un niveau acceptable le risque d'incendie et les effets potentiels des incendies impliquant des produits électrotechniques. Elle sert aussi de norme de référence pour les autres publications donnant des lignes directrices dans la série IEC 60695. La présente partie ne fournit pas de lignes directrices relatives à l'utilisation de parois de compartiment résistant au feu ou de systèmes de détection et de suppression pour la réduction du risque d'incendie. Elle décrit la relation entre le risque d'incendie et les effets potentiels des incendies. Elle fournit des lignes directrices aux comités de produits de l'IEC sur la pertinence des essais au feu qualitatifs et quantitatifs pour l'évaluation des dangers d'incendie des produits électrotechniques. Les détails du calcul du risque d'incendie ne sont pas couverts par le domaine d'application du présent document. Elle souligne l'importance de l'approche par scénario pour l'évaluation des dangers d'incendie et des risques d'incendie. Elle traite également des critères visant à assurer le développement de méthodes d'essai au feu basées sur les dangers qui soient techniquement solides. Elle traite des différents types d'essais au feu et, en particulier, de la nature des essais qualitatifs et quantitatifs. Elle décrit aussi les circonstances pour lesquelles il est approprié pour les comités de produits de l'IEC de maintenir ou de mettre au point des essais au feu qualitatifs. La présente norme est destinée à fournir des lignes directrices pour les comités de l'IEC et il convient de les utiliser en fonction de leurs applications particulières. Cette deuxième édition annule et remplace la première édition parue en 2009. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
- référence à l'IEC 60695-1-12;
- modification de l'introduction et du domaine d'application;
- mise à jour des références normatives;
- mise à jour des termes et définitions;
- modification du Tableau 1;
- ajout du Tableau 2: nouveau texte dans les Articles 5.2, 5.3 et 5.4.;
- texte obligatoire à l'Article 8;
- annexe B renommée Annexe A, et modifiée et ajout d'une Annexe B relative aux sources d'allumage communes.
Cette publication doit être lue conjointement avec la IEC 60695-1-11:2014, et IEC 60695-1-12:2015.
Mots clés: danger d'incendie, risque d'incendie, l'ingénierie de la sécurité incendie
General Information
Standards Content (sample)
IEC 60695-1-10
Edition 2.0 2016-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
BASIC SAFETY PUBLICATION
PUBLICATION FONDAMENTALE DE SÉCURITÉ
Fire hazard testing –
Part 1-10: Guidance for assessing the fire hazard of electrotechnical products –
General guidelines
Essais relatifs aux risques du feu –
Partie 1-10: Lignes directrices pour l'évaluation des risques du feu des produits
électrotechniques – Lignes directrices généralesIEC 60695-1-10:2016-11(en-fr)
---------------------- Page: 1 ----------------------
THIS PUBLICATION IS COPYRIGHT PROTECTED
Copyright © 2016 IEC, Geneva, Switzerland
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 02 113, 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 20 000 terms and definitions in
Technical Specifications, Technical Reports and other English and French, with equivalent terms in 15 additional
documents. Available for PC, Mac OS, Android Tablets and languages. Also known as the International Electrotechnical
iPad. 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 65 000 electrotechnical terminology entries in English and
variety of criteria (reference number, text, technical French extracted from the Terms and Definitions clause of
committee,…). It also gives information on projects, replaced IEC publications issued since 2002. Some entries have been
and withdrawn publications. 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 IECLe 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 20 000 termes et définitions en anglais
Spécifications techniques, Rapports techniques et autres
et en français, ainsi que les termes équivalents dans 15
documents de l'IEC. Disponible pour PC, Mac OS, tablettes
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
65 000 entrées terminologiques électrotechniques, en anglais
La recherche avancée permet de trouver des publications IEC
en utilisant différents critères (numéro de référence, texte, et en français, extraites des articles Termes et Définitions des
comité d’études,…). Elle donne aussi des informations sur les publications IEC parues depuis 2002. Plus certaines entrées
projets et les publications remplacées ou retirées. 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.---------------------- Page: 2 ----------------------
IEC 60695-1-10
Edition 2.0 2016-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
BASIC SAFETY PUBLICATION
PUBLICATION FONDAMENTALE DE SÉCURITÉ
Fire hazard testing –
Part 1-10: Guidance for assessing the fire hazard of electrotechnical products –
General guidelines
Essais relatifs aux risques du feu –
Partie 1-10: Lignes directrices pour l'évaluation des risques du feu des produits
électrotechniques – Lignes directrices généralesINTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 13.220.40; 29.020 ISBN 978-2-8322-3755-7
Warning! Make sure that you obtained this publication from an authorized distributor.
Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.
® Registered trademark of the International Electrotechnical CommissionMarque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 3 ----------------------
– 2 – IEC 60695-1-10:2016 IEC 2016
CONTENTS
FOREWORD ........................................................................................................................... 3
INTRODUCTION ..................................................................................................................... 5
1 Scope .............................................................................................................................. 6
2 Normative references ...................................................................................................... 6
3 Terms and definitions ...................................................................................................... 7
4 Fire hazards associated with electrotechnical products .................................................... 9
5 Fundamentals of fire hazard testing ............................................................................... 10
5.1 Objectives ............................................................................................................. 10
5.2 Fire hazard and fire risk ........................................................................................ 10
5.2.1 Fire hazard .................................................................................................... 10
5.2.2 Fire risk ......................................................................................................... 12
5.3 Fire scenarios ....................................................................................................... 13
5.4 Fire-safety engineering ......................................................................................... 15
5.5 Fire hazard assessment ........................................................................................ 15
6 Types of fire test ............................................................................................................ 15
6.1 General ................................................................................................................. 15
6.2 Quantitative and qualitative groups of fire tests ..................................................... 15
6.2.1 Quantitative fire tests ..................................................................................... 15
6.2.2 Qualitative fire tests ....................................................................................... 16
6.3 Types of fire tests ................................................................................................. 16
6.3.1 Fire simulation test ........................................................................................ 16
6.3.2 Fire resistance tests ...................................................................................... 16
6.3.3 Tests with regard to reaction to fire ................................................................ 16
6.3.4 Preselection fire tests .................................................................................... 16
6.3.5 Basic property tests ....................................................................................... 17
7 Appropriate use of qualitative fire tests .......................................................................... 17
8 Preparation of requirements and test specifications ....................................................... 17
9 Common ignition sources .............................................................................................. 18
10 Reference documents of TC 89 ..................................................................................... 18
Annex A (informative) The power output of ignition sources ................................................. 19
A.1 General ................................................................................................................. 19
A.2 Some common electrical and non-electrical ignition sources ................................. 19
A.3 Power source classification in IEC 62368-1 [9] ...................................................... 20
Annex B (informative) Guidance publications and test methods ........................................... 21
Bibliography .......................................................................................................................... 23
Table 1 – Common causes of ignition encountered in electrotechnical products .................... 11
Table 2 – Characteristics of fire stages (from Table 1 in ISO 19706:2011 [22]) ..................... 14
Table A.1 – Examples of ignition sources .............................................................................. 20
Table B.1 – TC 89 guidance publications and test methods .................................................. 21
---------------------- Page: 4 ----------------------IEC 60695-1-10:2016 IEC 2016 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FIRE HAZARD TESTING –
Part 1-10: Guidance for assessing the fire hazard of
electrotechnical products – General guidelines
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 organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
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
interested IEC National Committees.3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.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
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
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.
International Standard IEC 60695-1-10 has been prepared by IEC technical committee 89:
Fire hazard testing.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:a) reference to IEC 60695-1-12;
b) modified Introduction and Scope;
c) updated normative references;
d) updated terms and definitions;
e) modified Table 1;
---------------------- Page: 5 ----------------------
– 4 – IEC 60695-1-10:2016 IEC 2016
f) addition of Table 2;
g) new text in Subclauses 5.2, 5.3 and 5.4;
h) mandatory text in Clause 8;
i) Annex B changed to Annex A, and modified;
j) new Annex B concerning common ignition sources.
The text of this standard is based on the following documents:
FDIS Report on voting
89/1341/FDIS 89/1347/RVD
Full information on the voting for the approval of this International Standard can be found in
the report on voting indicated in the above table.This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
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 60695-1-11 and IEC 60695-1-12.
A list of all the parts in the IEC 60695 series, under the general title Fire hazard testing, can
be found on the IEC website.IEC 60695-1 consists of the following parts:
Part 1-10: Guidance for assessing the fire hazard of electrotechnical products – General
guidelinesPart 1-11: Guidance for assessing the fire hazard of electrotechnical products – Fire hazard
assessmentPart 1-12: Guidance for assessing the fire hazard of electrotechnical products – Fire-safety
engineeringPart 1-20: Guidance for assessing the fire hazard of electrotechnical products – Ignitability –
General guidancePart 1-21: Guidance for assessing the fire hazard of electrotechnical products – Ignitability –
Summary and relevance of test methodsPart 1-30: Guidance for assessing the fire hazard of electrotechnical products – Preselection
testing process – General guidelinesPart 1-40: Guidance for assessing the fire hazard of electrotechnical products – Insulating
liquidsThe committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under "http://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.
---------------------- Page: 6 ----------------------
IEC 60695-1-10:2016 IEC 2016 – 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 of component, circuit
and equipment design, as well as the choice of materials, is to reduce the risk of fire to a
tolerable level even in the event of reasonably foreseeable (mis)use, malfunction or failure.
This standard, together with its companions, IEC 60695-1-11 and IEC 60695-1-12, provides
guidance on how this is to be accomplished.The use of compartments with fire-resistant boundaries, and the use of detection and
suppression systems are important methods for the mitigation of fire risk, but are not dealt
with in this standard. Fires involving electrotechnical products can be initiated from external
non-electrical sources. Considerations of this nature are dealt with in an overall fire hazard
assessment.The aim of the IEC 60695 series of standards is to save lives and property by reducing the
number of fires or reducing the consequences of the fire. This can be accomplished by:
• trying to prevent ignition caused by an electrically energised component part and, in the
event of ignition, to confine any resulting fire within the bounds of the enclosure of the
electrotechnical product;• trying to minimise flame spread beyond the product’s enclosure and to minimise the
harmful effects of fire effluents including heat, smoke, and toxic or corrosive combustion
products.Assessing the fire hazard of electrotechnical products is accomplished by performing fire
hazard tests. These tests are divided into two fundamental groups: qualitative fire tests and
quantitative fire tests.Fire testing of electrotechnical products should, whenever possible, be carried out using
quantitative fire tests having the following characteristics.a) The test should take into account the circumstances of product use, i.e. contemplated
end-use conditions as well as foreseeable abnormal use. This is because fire conditions
that may be hazardous under one set of circumstances will not necessarily pose the same
threat under a different set.b) It should be possible to correlate the test results with the harmful effects of fire effluents
referred to above, i.e. the thermal and airborne threats to people and/or property in the
relevant end-use situation. This avoids the creation of artificial, and sometimes distorted,
performance scales with no clear relationship to fire safety.c) Recognizing that there are usually multiple contributions to the effects of real fires, the
test results should be expressed in well-defined terms and using rational scientific units,
so that the product's contribution to the overall fire effects can be quantitatively assessed
and compared with that of other products’ contributions.Although quantitative tests are preferred, the characteristics of qualitative fire tests are that
they provide pass/fail and classification results. Under certain circumstances it will be
appropriate to maintain such qualitative test methods or to develop new ones. This part of
IEC 60695-1 establishes the circumstances under which such maintenance or development is
appropriate.---------------------- Page: 7 ----------------------
– 6 – IEC 60695-1-10:2016 IEC 2016
FIRE HAZARD TESTING –
Part 1-10: Guidance for assessing the fire hazard of
electrotechnical products – General guidelines
1 Scope
This part of IEC 60695-1 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 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 andISO/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 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 anyamendments) applies.
IEC 60079-0, Explosive atmospheres − Part 0: Equipment − General requirements
IEC 60695-1-11, Fire hazard testing – Part 1-11: Guidance for assessing the fire hazard of
electrotechnical products – Fire hazard assessment---------------------- Page: 8 ----------------------
IEC 60695-1-10:2016 IEC 2016 – 7 –
IEC 60695-1-12, Fire hazard testing – Part 1-12: Guidance for assessing the fire hazard of
electrotechnical products – Fire-safety engineeringIEC 60695-1-30, Fire hazard testing – Part 1-30: Guidance for assessing the fire hazard of
electrotechnical products – Preselection testing process – General guidelinesIEC 60695-4:2012, Fire hazard testing – Part 4: Terminology concerning fire tests for
electrotechnical productsIEC Guide 104, The preparation of safety publications and the use of basic safety publications
and group safety publicationsISO/IEC Guide 51, Safety aspects – Guidelines for their inclusion in standards
ISO 13943:2008, Fire safety – Vocabulary
3 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 60695-4:2012 and
ISO 13943:2008 (some of which are reproduced below), as well as the following, apply.
3.1fire
〈general〉 process of combustion characterized by the emission of heat and fire effluent and
usually accompanied by smoke, flame, glowing or a combination thereofNote 1 to entry: In the English language, the term “fire” is used to designate three concepts, two of which, fire
(3.2) and fire (3.3), relate to specific types of self-supporting combustion with different meanings and two of them
are designated using two different terms in both French and German.[SOURCE: ISO 13943:2008, 4.96]
3.2
fire
〈controlled〉 self-supporting combustion that has been deliberately arranged to provide useful
effects and is limited in its extent in time and space[SOURCE: ISO 13943:2008, 4.97]
3.3
fire
〈uncontrolled〉 self-supporting combustion that has not been deliberately arranged to provide
useful effects and is not limited in its extent in time and space[SOURCE: ISO 13943:2008, 4.98]
3.4
fire hazard
physical object or condition with a potential for an undesirable consequence from fire (3.3)
[SOURCE: ISO 13943:2008, 4.112]___________
Under preparation. Stage at time of publication: IEC/FDIS 60695-1-30:2016.
---------------------- Page: 9 ----------------------
– 8 – IEC 60695-1-10:2016 IEC 2016
3.5
fire risk
probability of a fire (3.3) combined with a quantified measure of its consequence
Note 1 to entry: It is often calculated as the product of probability and consequence.
[SOURCE: ISO 13943:2008, 4.124]3.6
fire-safety engineering
application of engineering methods based on scientific principles to the development or
assessment of designs in the built environment through the analysis of specific fire scenarios
(3.7) or through the quantification of risk for a group of fire scenarios[SOURCE: ISO 13943:2008, 4.126]
3.7
fire scenario
qualitative description of the course of a fire (3.3) with respect to time, identifying key events
that characterise the studied fire and differentiate it from other possible fires
Note 1 to entry: It typically defines the ignition and fire growth processes, the fully developed fire stage, the fire
decay stage, and the environment and systems that impact on the course of the fire.
[SOURCE: ISO 13943:2008, 4.129]3.8
intermediate-scale fire test
fire test performed on a test specimen of medium dimensions
Note 1 to entry: A fire test performed on a test specimen for which the maximum dimension is between 1 m and
3 m is usually called an intermediate-scale fire test.[SOURCE: ISO 13943:2008, 4.200]
3.9
large-scale fire test
fire test that cannot be carried out in a typical laboratory chamber, performed on a test
specimen of large dimensionsNote 1 to entry: A fire test performed on a test specimen of which the maximum dimension is greater than 3 m is
usually called a large-scale fire test.[SOURCE: ISO 13943:2008, 4.205]
3.10
qualitative fire test
fire test which is either:
a) a pass/fail test; or
b) a test which categorizes the behaviour of the test specimen by determining its position in
a rank order of performance[SOURCE: IEC 60695-4:2012, 3.2.22]
3.11
quantitative fire test
fire test which takes into account the circumstances of product use in which the test
conditions are based on, or are relatable to, the circumstances of use of the test specimen,
---------------------- Page: 10 ----------------------IEC 60695-1-10:2016 IEC 2016 – 9 –
and which measures a parameter or parameters, expressed in well-defined terms and using
rational scientific units, which can be used in the quantitative assessment of fire risk
[SOURCE: IEC 60695-4:2012, 3.2.23]3.12
reaction to fire
response of a test specimen when it is exposed to fire (3.2) under specified conditions in a
fire testNote 1 to entry: Fire resistance is regarded as a special case and is not normally considered as a reaction to fire
property.[SOURCE: ISO 13943:2008, 4.272]
3.13
real-scale fire test
fire test that simulates a given application, taking into account the real scale, the real way the
item is installed and used, and the environmentNote 1 to entry: Such a fire test normally assumes that the products are used in accordance with the conditions
laid down by the specifier and/or in accordance with normal practice.[SOURCE: ISO 13943:2008, 4.273]
3.14
short-circuit
unintended connection of two nodes of an electrical circuit
Note 1 to entry: Current flow can occur, which could cause circuit damage, overheating, fire or explosion.
3.15small-scale fire test
fire test performed on a test specimen of small dimensions
Note 1 to entry: A fire test performed on a test specimen of which the maximum dimension is less than 1 m is
usually called a small-scale fire test.[SOURCE: ISO 13943:2008, 4.292]
4 Fire hazards associated with electrotechnical products
The transmission, distribution, storage and utilization of electrical energy can have the
potential to contri...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.