IEC 60695-1-30:2017

IEC 60695-1-30 ®
Edition 3.0 2017-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
BASIC SAFETY PUBLICATION
PUBLICATION FONDAMENTALE DE SÉCURITÉ
Fire hazard testing –
Part 1-30: Guidance for assessing the fire hazard of electrotechnical products –
Preselection testing process – General guidelines

Essais relatifs aux risques du feu –
Partie 1-30: Lignes directrices pour l’évaluation des risques du feu des produits
électrotechniques – Processus d’essai de présélection – Lignes directrices
générales
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IEC 60695-1-30 ®
Edition 3.0 2017-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
BASIC SAFETY PUBLICATION
PUBLICATION FONDAMENTALE DE SÉCURITÉ

Fire hazard testing –
Part 1-30: Guidance for assessing the fire hazard of electrotechnical products –

Preselection testing process – General guidelines

Essais relatifs aux risques du feu –

Partie 1-30: Lignes directrices pour l’évaluation des risques du feu des produits

électrotechniques – Processus d’essai de présélection – Lignes directrices

générales
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 13.220.40; 29.020 ISBN 978-2-8322-3882-0

– 2 – IEC 60695-1-30:2017 © IEC 2017
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 Principles of product design considering preselection . 7
5 Advantages and limitations of preselection . 8
6 Aspects of preselection relative to fire hazard assessment . 9
Annex A (informative) Examples of test methods . 10
A.1 General . 10
A.2 Ignitability . 10
A.3 Flammability and flame spread. 10
A.4 Heat . 11
A.5 Smoke . 11
A.6 Toxicity . 11
A.7 Corrosion . 11
A.8 Abnormal heat . 11
A.9 Tracking index . 11
Annex B (informative) Use of preselection tests for flammability requirements for
materials used in attended electric appliances – Illustrative example . 12
Bibliography . 14

Figure B.1 – Selection and sequence of tests for resistance to fire in attended
appliances in accordance with Figure O.3 of IEC 60335-1 [1] . 13

Table 1 – Some factors which can affect fire performance in preselection tests . 8

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FIRE HAZARD TESTING –
Part 1-30: Guidance for assessing the fire hazard of electrotechnical
products – Preselection testing process – 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
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2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
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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.
International Standard IEC 60695-1-30 has been prepared by IEC technical committee 89:
Fire hazard testing.
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) Reference to IEC 60695-1-12;
b) Modified Introduction;
c) Clause 2: updated and additional normative references;
d) Clause 3: updated and additional terms and definitions;

– 4 – IEC 60695-1-30:2017 © IEC 2017
e) Clause 4: updated text, with a requirement and normative reference to IEC 60695-1-10,
IEC 60695-1-11 and IEC 60695-1-12;
f) Clause 5: modified text;
g) Annex A: updated references with additions and deletions;
h) Annex B: Examples of materials used in attended appliances replaces the previous
example of an ITE product;
i) Bibliographic references updated.
The text of this standard is based on the following documents:
FDIS Report on voting
89/1350/FDIS 89/1355/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 60695-1-10 and IEC 60695-1-11.
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.
Part 1 consists of the following parts:
Part 1-10: Guidance for assessing the fire hazard of electrotechnical products – General
guidelines
Part 1-11: Guidance for assessing the fire hazard of electrotechnical products – Fire hazard
assessment
Part 1-12: Guidance for assessing the fire hazard of electrotechnical products – Fire safety
engineering
Part 1-20: Guidance for assessing the fire hazard of electrotechnical products – Ignitability –
General guidance
Part 1-21: Guidance for assessing the fire hazard of electrotechnical products – Ignitability –
Summary and relevance of test methods
Part 1-30: Guidance for assessing the fire hazard of electrotechnical products – Preselection
testing process – General guidelines
Part 1-40: Guidance for assessing the fire hazard of electrotechnical products – Insulating
liquids
The 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.
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.
IEC 60695-1-10, IEC 60695-1-11 and IEC 60695-1-12 provide guidance on how this is to be
accomplished.
The best method for testing electrotechnical products with regard to fire hazard is to duplicate
exactly the conditions occurring in practice within a real-scale fire test. Where this is not
practicable, fire hazard testing is conducted by simulating as closely as possible, the actual
conditions of use and of the situation to which a sub-assembly, component, part or material
may be exposed in such use.
Preselection is the procedure for assessing and choosing materials, components or sub-
assemblies for parts of end products. Preselection has been used for many years to assist in
the design stage of the end product.
The information gained from properly designed small-scale tests can be used as an aid for the
preselection of appropriate materials, parts, components or sub-assemblies with regard to the
fire hazard evaluation of the final end product. As an outcome of conducting a fire hazard
assessment, an appropriate series of preselection flammability and ignition tests may enable
reduced end product testing.
– 6 – IEC 60695-1-30:2017 © IEC 2017
FIRE HAZARD TESTING –
Part 1-30: Guidance for assessing the fire hazard of electrotechnical
products – Preselection testing process – General guidelines

1 Scope
This part of IEC 60695 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 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.
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 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.
IEC 60695-1-10, Fire hazard testing – Part 1-10: Guidance for assessing the fire hazard of
electrotechnical products – General guidelines
IEC 60695-1-11, Fire hazard testing – Part 1-11: Guidance for assessing the fire hazard of
electrotechnical products – Fire hazard assessment
IEC 60695-1-12, Fire hazard testing – Part 1-12: Guidance for assessing the fire hazard of
electrotechnical products – Fire safety engineering
IEC 60695-4:2012, Fire hazard testing – Part 4: Terminology concerning fire tests for
electrotechnical products
IEC GUIDE 104, The preparation of safety publications and the use of basic safety
publications and group safety publications
ISO/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 ISO 13943:2008 and
IEC 60695-4:2012 (some of which are reproduced below), as well as the following, apply.
3.1
end product
product that is ready for use without modification
Note 1 to entry: An end product can be a component of another end product.
[SOURCE: IEC 60695-4:2012, 3.2.7]
3.2
end product fire test
fire test that is carried out on an end product and is described in a relevant specification
Note 1 to entry: End product fire tests may be small-scale, intermediate-scale, large-scale or real-scale.
[SOURCE: IEC 60695-4:2012, 3.2.8]
3.3
fire hazard
physical object or condition with a potential for an undesirable consequence from fire
[SOURCE: ISO 13943:2008, 4.112]
3.4
fire hazard assessment
evaluation of the possible causes of fire, the possibility and nature of subsequent fire growth,
and the possible consequences of fire
[SOURCE: IEC 60695-4:2012, 3.2.10]
3.5
preselection
process of assessing and choosing candidate materials, components or sub-assemblies for
making an end product
[SOURCE: IEC 60695-4:2012, 3.2.21]
4 Principles of product design considering preselection
One objective of equipment design is to choose individual materials, parts, components and
sub-assemblies that reduce the likelihood of fire.
Guidance on the fire hazard testing of electrotechnical products is given in IEC 60695-1-10.
Guidance on fire hazard assessment is given in IEC 60695-1-11. Guidance on fire safety
engineering is given in IEC 60695-1-12.
The preselection procedure, as well as end product testing, should take into account all
possible ignition sources, even those that may have an influence in the event of reasonably
foreseeable (mis)use, malfunction or failure.
The properties required by individual materials, parts, components and sub-assemblies are
determined by their function and related requirements as part of the final end product. The

– 8 – IEC 60695-1-30:2017 © IEC 2017
selection and magnitude of these properties will be dependent upon the details of reasonably
foreseeable (mis)use and environmental exposure.
An integral element of preselection is the acquisition of relevant information regarding a
material’s characteristics. This knowledge can be acquired from an analysis of data obtained
from standardized test methods conducted on specified test specimens. Examples of tests
which may be relevant to preselection are contained in Annex A.
The preselection process should describe how standardized test methods may be used in
decision-making processes to minimize the fire hazards from electrotechnical equipment. The
preselection process shall take into account the relevant features of the end product, since
the actual performance of the material may be affected by various factors and constructional
characteristics.
The fire performance of materials, parts, components and sub-assemblies is affected by a
number of factors, some of which are listed in Table 1.
Consequently, a preselection procedure to adequately assess the expected performance of a
final end product requires test data on materials, parts, components and sub-assemblies and
should take into account all of the relevant features (for example, the environmental
conditions, association with other items, and possible ignition sources).
A decision analysis flow chart (see Figure B.1) is shown in Annex B for an illustrative example
of the use of preselection.
Table 1 – Some factors which can affect fire performance in preselection tests
Item Factor
a) Thickness and size of the test specimen
b) Shape, homogeneity and volume of the test specimen
c) Combination and interaction of materials, parts, components and sub-assemblies
d) Position and orientation of the test specimen
e) Composition of materials
f) Presence of fire-retardant covers, barriers and/or coatings
g) Effects of environmental influence and contamination, e.g. effects of temperature, ageing and ventilation
h) Effects of manufacturing processes
i) Type and power of the ignition source
j) Location of application of the ignition source
k) Time of application of the ignition source
l) Presence of any heat sinks, and heat transfer effects

5 Advantages and limitations of preselection
A preselection process that can meet the principles described in Clause 4 may present certain
advantages and limitations:
a) Preselection provides a comparative method to evaluate the performance of a test
specimen and can be of assistance in the selection of materials, parts, components and
sub-assemblies during the design stage.
b) The grading and classification obtained from a comprehensive preselection process may
be used to specify a basic minimum performance of materials and parts used in product
specifications.
c) In general, it cannot be assumed that any direct relationship exists between the results of
a preselection test and the results of a test made on the final end product. However, a
material, part, component or sub-assembly that reacts more favourably than another when
subjected to a standardized preselection test and has a history of safe use in similar
applications, could also react more favourably when used in the design of an end product.
d) Priority is given to fire hazard assessment tests made on the final end product. However,
in certain cases preselection may be agreed upon for practical reasons as a way to
reduce the amount of end product testing. It should be noted that in this case, it is
advisable to establish an increased margin of safety in an attempt to ensure satisfactory
performance, based on the relevant features of the end product.
e) Preselection tests may result in safer products because of the use of specified test
samples and consistency in test methods and test data. Preselection tests tend to use
relatively small, discrete samples, consequently reducing the costs of testing and also
enabling a variety of ignition sources to be used, which may not be easily applied in a test
on the end product.
f) Preselection data are readily available from multiple international sources. Preselection
data can be used to examine the variation of a material’s properties with respect to a
range of parameters. Typical examples of such parameters are: source of data (test
laboratory), source of material, test orientation, colour and thickness.
Examples of ISO and IEC fire hazard test methods that may be applicable to preselection are
listed in Annex A.
If an end product test is required, it cannot be replaced by the result of a preselection test.
6 Aspects of preselection relative to fire hazard assessment
Preselection of materials, based on the results obtained by tests for reaction to abnormal heat
and reaction to fire may be used in the decision-making process related to fire hazard
assessment, when the relevant aspects discussed in Clause 4 have been considered, or if
there is a history of safe use of the material in similar applications.
Some of the factors listed in Table 1 may be reasonably covered by the preselection test itself,
others may require careful interpretation of a result with regard to evaluation of fire hazard.
When the design is based on previous known fire hazard assessment elements the tests
might be limited to the relevant preselection process or a combination of a relevant
preselection process and an end product test. When the outcome of the fire hazard
assessment is uncertain or when a new design is used it is recommended to use an end
product test to verify the likelihood of fire from an electrotechnical product.

– 10 – IEC 60695-1-30:2017 © IEC 2017
Annex A
(informative)
Examples of test methods
A.1 General
The following IEC and ISO publications contain information on fire hazard assessment tests
which may be applicable to preselection.
A.2 Ignitability
IEC 60695-1-21, Fire hazard testing – Part 1-21: Guidance for assessing the fire hazard of
electrotechnical products – Ignitability – Summary and relevance of test methods
IEC 60695-2-13, Fire hazard testing – Part 2-13: Glowing/hot-wire based test methods –
Glow-wire ignition temperature (GWIT) test method for materials
IEC 60695-11-11, Fire hazard testing – Part 11-11: Test flames – Determination of the
characteristic heat flux for ignition from a non-contacting flame source
ISO 871, Plastics – Determination of ignition temperature using a hot-air furnace
ISO 4589 series, Plastics – Determination of burning behaviour by oxygen index
A.3 Flammability and flame spread
IEC 60695-2-12, Fire hazard testing – Part 2-12: Glowing/hot-wire based test methods –
Glow-wire flammability index (GWFI) test method for materials
IEC 60695-9-2, Fire hazard testing – Part 9-2: Surface spread of flames – Summary and
relevance of test methods
IEC 60695-11-5, Fire hazard testing – Part 11-5: Test flames – Needle-flame test method –
Apparatus, confirmatory test arrangement and guidance
IEC 60695-11-10, Fire hazard testing – Part 11-10: Test flames – 50 W horizontal and vertical
flame test methods
IEC 60695-11-20, Fire hazard testing – Part 11-20: Test flames – 500 W flame test methods
IEC TS 60695-11-21, Fire hazard testing – Part 11-21: Test flames – 500 W vertical flame test
method for tubular polymeric materials
ISO 9772, Cellular plastics – Determination of horizontal burning characteristics of small
specimens subjected to a small flame
ISO 9773, Plastics – Determination of burning behaviour of thin flexible vertical specimens in
contact with a small-flame ignition source
ISO 12992, Plastics – Vertical flame spread determination for film and sheet

A.4 Heat
IEC TR 60695-8-2, Fire hazard testing – Part 8-2: Heat release – Summary and relevance of
test methods
IEC TS 60695-8-3, Fire hazard testing – Part 8-2: Heat release – Heat release of insulating
liquids used in electrotechnical products (withdrawn)
ISO 5660-1, Reaction-to-fire tests – Heat release, smoke production and mass loss rate –
Part 1: Heat release rate (cone calorimeter method) and smoke production rate (dynamic
measurement)
ISO 13927, Plastics – Simple heat release test using a conical radiant heater and a
thermopile detector
A.5 Smoke
IEC TS 60695-6-2, Fire hazard testing – Part 6-2: Smoke obscuration – Summary and
relevance of test methods
ISO 5659-2, Plastics – Smoke generation – Part 2: Determination of optical density by a
single-chamber test
A.6 Toxicity
IEC 60695-7-2, Fire hazard testing – Part 7-2: Toxicity of fire effluent – Summary and
relevance of test methods
ISO/TS 19700, Controlled equivalence ratio method for the determination of hazardous
components of fire effluents
A.7 Corrosion
IEC TS 60695-5-2, Fire hazard testing – Part 5-2: Corrosion damage effects of fire effluent –
Summary and relevance of test methods
ISO 11907 series, Plastics – Smoke generation – Determination of the corrosivity of fire
effluents
A.8 Abnormal heat
IEC 60695-10-2, Fire hazard testing – Part 10-2: Abnormal heat – Ball pressure test
IEC 60695-10-3, Fire hazard testing – Part 10-3: Abnormal heat – Mould stress relief
distortion test
A.9 Tracking index
IEC 60112, Method for the determination of the proof and the comparative tracking indices of
solid insulating materials
– 12 – IEC 60695-1-30:2017 © IEC 2017
Annex B
(informative)
Use of preselection tests for flammability requirements for
materials used in attended electric appliances – Illustrative example
This illustrative example (Figure B.1) describes a part of the preselection procedure described
in Clause 30 and Figure O.3 of IEC 60335-1:2013[1] for materials used in attended
household and similar electrical appliances. The test data resulting from conducting relevant
preselection tests can be evaluated and used as the basis for determining compliance with
the applicable resistance to fire requirements indicated in the end product standard. As
indicated in Figure O.3 of IEC 60335-1:2013, the number of end product tests may be reduced
if the materials’ characteristics fulfil the minimum preselection requirements for the application.
For the purpose of this illustrative example, the material is used in an end product that is
covered under the scope of IEC 60335-1 for household and s
...