Fire hazard testing - Part 4: Terminology concerning fire tests for electrotechnical products

IEC 60695-4:2021 is available as IEC 60695-4:2021 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 60695-4:2021 The terms and definitions in this part of IEC 60695 are applicable to fire tests for electrotechnical products.
This basic safety publication focusing on safety guidance is primarily intended for use by technical committees in the preparation of safety publications in accordance with the principles laid down in IEC Guide 104 and ISO/IEC Guide 51. One of the responsibilities of a technical committee is, wherever applicable, to make use of basic safety publications in the preparation of its publications. 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. This fifth edition cancels and replaces the fourth edition published in 2012. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
a) The terms and definitions that are not specifically electrotechnical and that are either identical or equivalent to those in ISO 13943:2017 have been deleted.
b) The terms and definitions that are specifically electrotechnical and that are in ISO 13943:2017 have been included for the convenience of the user.
It has the status of a basic safety publication in accordance with IEC Guide 104 and ISO/IEC Guide 51.

Essais relatifs aux risques du feu - Partie 4: Terminologie relative aux essais au feu pour les produits électrotechniques

IEC 60695-4:2021 est disponible sous forme de IEC 60695-4:2021 RLV qui contient la Norme internationale et sa version Redline, illustrant les modifications du contenu technique depuis l'édition précédente.IEC 60695-4:2021 Les termes et définitions définis dans la présente partie de l'IEC 60695 sont applicables aux essais au feu pour les produits électrotechniques. La présente publication fondamentale de sécurité portant sur des recommandations de sécurité est avant tout destinée à être utilisée par les comités d’études dans le cadre de l'élaboration de publications de sécurité, conformément aux principes établis dans le Guide IEC 104 et le Guide ISO/IEC 51. L’une des responsabilités d’un comité d’études consiste, le cas échéant, à utiliser les publications fondamentales de sécurité dans le cadre de l’élaboration de ses publications. Les exigences, méthodes d’essai ou conditions d’essai de cette publication fondamentale de sécurité ne s’appliquent pas, sauf si elles sont spécifiquement citées en référence ou incluses dans les publications correspondantes. Cette cinquième édition annule et remplace la quatrième édition parue en 2012. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
a) Les termes et définitions qui ne concernent pas spécifiquement l'électrotechnique et qui sont soit identiques soit équivalents à ceux de l'ISO 13943:2017 ont été supprimés.
b) Les termes et définitions qui sont spécifiquement électrotechniques et qui figurent dans l'ISO 13943:2017 ont été inclus dans un souci de commodité pour l'utilisateur.
Elle a le statut d’une publication fondamentale de sécurité conformément au Guide IEC 104 et au Guide ISO/IEC 51.

General Information

Status
Published
Publication Date
22-Jun-2021
Technical Committee
Current Stage
PPUB - Publication issued
Completion Date
23-Jun-2021
Ref Project

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IEC 60695-4
Edition 5.0 2021-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Fire hazard testing –
Part 4: Terminology concerning fire tests for electrotechnical products
Essais relatifs aux risques du feu –
Partie 4: Terminologie relative aux essais au feu pour les produits
électrotechniques
IEC 60695-4:2021-06(en-fr)
---------------------- Page: 1 ----------------------
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---------------------- Page: 2 ----------------------
IEC 60695-4
Edition 5.0 2021-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Fire hazard testing –
Part 4: Terminology concerning fire tests for electrotechnical products
Essais relatifs aux risques du feu –
Partie 4: Terminologie relative aux essais au feu pour les produits
électrotechniques
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 01.040.13; 29.020 ISBN 978-2-8322-9906-7

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 Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 3 ----------------------
– 2 – IEC 60695-4:2021 © IEC 2021
CONTENTS

FOREWORD ........................................................................................................................... 3

1 Scope .............................................................................................................................. 5

2 Normative references ...................................................................................................... 5

3 Terms and definitions ...................................................................................................... 5

3.1 Use of the term “item” ............................................................................................. 5

3.2 Other terms and definitions ..................................................................................... 5

---------------------- Page: 4 ----------------------
IEC 60695-4:2021 © IEC 2021 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FIRE HAZARD TESTING –
Part 4: Terminology concerning fire tests
for electrotechnical products
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

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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 60695-4 has been prepared by of IEC technical committee 89: Fire

hazard testing.

This fifth edition cancels and replaces the fourth edition published in 2012. This edition

constitutes a technical revision.

This edition includes the following significant technical changes with respect to the previous

edition:

a) The terms and definitions that are not specifically electrotechnical and that are either

identical or equivalent to those in ISO 13943:2017 have been deleted.

b) The terms and definitions that are specifically electrotechnical and that are in

ISO 13943:2017 have been included for the convenience of the user.
---------------------- Page: 5 ----------------------
– 4 – IEC 60695-4:2021 © IEC 2021
The text of this International Standard is based on the following documents:
Draft Report on voting
89/1462/CDV 89/1502/RVC

Full information on the voting for its approval can be found in the report on voting indicated in

the above table.
The language used for the development of this International Standard is English.

It has the status of a basic safety publication in accordance with IEC Guide 104 and

ISO/IEC Guide 51.

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.
The following introductory elements represent a series of publications:
Part 1: Guidance for assessing the fire hazard of electrotechnical products
Part 2: Glowing/hot-wire based test methods
Part 4: Terminology concerning fire tests for electrotechnical products
Part 5: Corrosion damage effects of fire effluent
Part 6: Smoke obscuration
Part 7: Toxicity of fire effluent
Part 8: Heat release
Part 9: Surface spread of flame
Part 10: Abnormal heat
Part 11: Test flames

This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in

accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement,

available at www.iec.ch/members_experts/refdocs. The main document types developed by

IEC are described in greater detail at www.iec.ch/standardsdev/publications.

The committee has decided that the contents of this document will remain unchanged until the

stability date indicated on the IEC website under webstore.iec.ch in the data related to the

specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
---------------------- Page: 6 ----------------------
IEC 60695-4:2021 © IEC 2021 – 5 –
FIRE HAZARD TESTING –
Part 4: Terminology concerning fire tests
for electrotechnical products
1 Scope

The terms and definitions in this part of IEC 60695 are applicable to fire tests for

electrotechnical products.

This basic safety publication focusing on safety guidance is primarily intended for use by

technical committees in the preparation of safety publications in accordance with the

principles laid down in IEC Guide 104 and ISO/IEC Guide 51.

One of the responsibilities of a technical committee is, wherever applicable, to make use of

basic safety publications in the preparation of its publications. 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 60050 (all parts), International Electrotechnical vocabulary (available at
www.electropedia.org)

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 13943:2017, Fire safety – Vocabulary
3 Terms and definitions
3.1 Use of the term "item"

For the purposes of this document, the English term "item" is used in a general meaning to

represent any single object or assembly of objects, and may cover, for example, material,

product, assembly, structure or building, as required in the context of any individual definition.

If the "item" under consideration is a test specimen then the term "test specimen" is used.

3.2 Other terms and definitions
For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminological databases for use in standardization at the following

addresses:
---------------------- Page: 7 ----------------------
– 6 – IEC 60695-4:2021 © IEC 2021
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp

NOTE Terms and definitions that are specifically electrotechnical and that are in ISO 13943:2017 have been

included below for the convenience of the user.
3.2.1
abnormal heat

heat that is additional to that resulting from use under normal conditions,

up to and including that which causes a fire
[SOURCE: ISO 13943:2017, 3.1]
3.2.2
arc resistance

ability of an electrically insulating material to resist the influence of an

electric arc, under specified conditions

Note 1 to entry The arc resistance is identified by the length of the arc, the absence or presence of a conducting

path, and the burning or damage of the test specimen.
[SOURCE: ISO 13943:2017, 3.19]
3.2.3
arc tracking
tracking

progressive formation of conducting paths that are produced on the

surface and/or within a solid insulating material, due to the combined effects of electric stress

and electrolytic contamination
Note 1 to entry: Compare with the term tracking resistance (3.2.20).
[SOURCE: ISO 13943:2017, 3.406]
3.2.4
confirmatory test

procedure intended as a diagnostic indicator to reveal anomalous behaviour or conditions in a

test flame, burner or associated hardware
3.2.5
enclosure

external casing protecting the electrical and mechanical parts of apparatus

Note 1 to entry: This term excludes cables.
[SOURCE: ISO 13943:2017, 3.93]
3.2.6
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.
3.2.7
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.

---------------------- Page: 8 ----------------------
IEC 60695-4:2021 © IEC 2021 – 7 –
3.2.8
extent of combustion
maximum length of a test specimen that has been destroyed by

combustion or pyrolysis, under specified test conditions, excluding any region damaged only

by deformation
[SOURCE: ISO 13943:2017, 3.109]
3.2.9
flameproof

class of methods used to prevent the ignition, caused by electrical

equipment, of explosive atmospheres
Note 1 to entry: See also flameproof enclosure (3.2.10).

Note 2 to entry: The term is deprecated in other applications (see ISO 13943:2017, 3.171).

3.2.10
flameproof enclosure

enclosure (3.2.5) that can withstand the pressure developed during an

explosion of the atmosphere within the enclosure and can prevent the transmission of the

explosion to the atmosphere surrounding the enclosure
[SOURCE: ISO 13943:2017, 3.172]
3.2.11
flashover

electrical discharge that occurs over the surface of a solid dielectric in a

gaseous or liquid medium
[SOURCE: ISO 13943:2017, 3.185]
3.2.12
insignificant mass
insufficient combustible material to constitute a fire hazard

Note 1 to entry: A default value of an insignificant mass is 2 g, but product technical committees may assign a

differe
...

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