IEC 60695-5-1:2021

Fire hazard testing - Part 5-1: Corrosion damage effects of fire effluent - General guidance

IEC 60695-5-1:2021 is available as IEC 60695-5-1:2021 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.
IEC 60695-5-1:2021 provides guidance on the following:
a) general aspects of corrosion damage test methods;
b) methods of measurement of corrosion damage;
c) consideration of test methods;
d) relevance of corrosion damage data to hazard assessment.
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. 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 standard is to be read in conjunction with IEC TS 60695-5-2.
This third edition cancels and replaces the second edition, published in 2002, and constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
a) References to IEC TS 60695-5-3 (withdrawn in 2014) have been removed.
b) References to IEC 60695-1-1 are now to its replacements: IEC 60695-1-10 and IEC 60695-1-11.
c) ISO/TR 9122-1 has been revised by ISO 19706.
d) Table 1 has been updated.
e) References to ISO 11907-2 and ISO 11907-3 have been removed.
f) Terms and definitions have been updated.
g) Text in 6.4 has been updated.
h) Bibliographic references have been updated.

Essais relatifs aux risques du feu - Partie 5-1: Effets des dommages de corrosion des effluents du feu - Recommandations générales

IEC 60695-5-1:2021 est disponible sous forme de IEC 60695-5-1:2021 RLV qui contient la Norme internationale et sa version Redline, illustrant les modifications du contenu technique depuis l'édition précédente.
L'IEC 60695-5-1:2021 fournit des recommandations concernant:
a) les aspects généraux des méthodes d’essai des dommages de corrosion;
b) les méthodes de mesure des dommages de corrosion;
c) la prise en considération des méthodes d’essai;
d) la pertinence des données concernant les dommages de corrosion pour l’estimation du danger.
La présente publication fondamentale de sécurité est essentiellement destinée à être utilisée par les comités d'études dans le cadre de l'élaboration de normes conformément aux principes établis dans le Guide IEC 104 et le Guide ISO/IEC 51. Elle n'est pas destinée à être utilisée par des fabricants ou des organismes de certification. 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, les méthodes ou les conditions d'essai de la présente publication fondamentale de sécurité s'appliquent seulement si elles sont spécifiquement citées en référence ou incluses dans les publications correspondantes. Cette troisième édition annule et remplace la deuxième édition, parue en 2002 et constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
a) les références à l’IEC TS 60695-5-3 (supprimée en 2014) ont été supprimées;
b) les références à l’IEC 60695-1-1 correspondent désormais aux normes suivantes: IEC 60695-1-10 et IEC 60695-1-11;
c) l’ISO/TR 9122-1 a été révisée par l’ISO 19706;
d) le Tableau 1 a été mis à jour;
e) les références à l’ISO 11907-2 et à l’ISO 11907-3 ont été supprimées;
f) les termes et définitions ont été mis à jour;
g) le texte de 6.4 a été mis à jour;
h) les références bibliographiques ont été mises à jour.

General Information

• Status: Published
• Publication Date: 27-Oct-2021
• ICS: 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: 10-Sep-2021
• Completion Date: 28-Oct-2021

Relations

• Revises: IEC 60695-5-1:2002 - Fire hazard testing - Part 5-1: Corrosion damage effects of fire effluent - General guidance
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 60695-5-1 ®
Edition 3.0 2021-10
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
HORIZONTAL PUBLICATION
Fire hazard testing –
Part 5-1: Corrosion damage effects of fire effluent – General guidance

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.

IEC Central Office Tel.: [phone]
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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
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and French, with equivalent terms in 18 additional languages.
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need further assistance, please contact the Customer Service
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IEC 60695-5-1 ®
Edition 3.0 2021-10
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
HORIZONTAL PUBLICATION
Fire hazard testing –
Part 5-1: Corrosion damage effects of fire effluent – General guidance
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 29.020 ISBN 978-2-8322-4440-1

– 2 – IEC 60695-5-1:2021 RLV © IEC 2021
CONTENTS
FOREWORD . 3
INTRODUCTION . 2
1 Scope . 8
2 Normative references . 8
3 Terms and definitions . 8
4 Fire scenarios and physical fire models . 9
5 General aspects of the corrosivity of fire effluent . 13
5.1 Corrosion damage scenarios . 13
5.2 Types of corrosion damage effects . 15
5.2.1 Introduction . 15
5.2.2 Metal loss . 15
5.2.3 Moving parts becoming immobile . 15
5.2.4 Bridging of conductor circuits . 15
5.2.5 Formation of a non-conducting layer on contact surfaces. 15
5.3 Factors affecting corrosivity . 16
5.3.1 Introduction . 16
5.3.2 The nature of fire effluent . 16
5.3.3 The corrosion environment . 17
6 Principles of corrosion damage measurement . 17
6.1 Introduction . 17
6.2 Generation of the fire effluent . 17
6.2.1 General . 17
6.2.2 Selection of the test specimen to be burned . 18
6.2.3 Selection of the physical fire model . 18
6.3 Assessment of corrosive potential . 18
6.3.1 General . 18
6.3.2 Indirect assessment . 18
6.3.3 Simulated product testing . 19
6.3.4 Product testing . 19
6.4 Consideration of corrosivity test methods . 20
7 Relevance of data to hazard assessment . 21
Bibliography . 23

Figure 1 – Different stages in the development of a fire within a compartment . 13
Figure 2 – Evaluation and consideration of corrosion damage test methods . 21

Table 1 – General classification of fires (ISO/TR 9122-1) .
Table 1 – Characteristics of fire stages (from Table 1 of ISO 19706:2011) . 14
Table 2 – Summary of corrosivity test methods . 19

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FIRE HAZARD TESTING –
Part 5-1: Corrosion damage effects of fire effluent –
General guidance
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.
This redline version of the official IEC Standard allows the user to identify the changes made to
the previous edition IEC 60695-5-1:2002. A vertical bar appears in the margin wherever a
change has been made. Additions are in green text, deletions are in strikethrough red text.

– 4 – IEC 60695-5-1:2021 RLV © IEC 2021
International Standard IEC 60695-5-1 has been prepared by IEC technical committee 89: Fire
hazard testing.
This third edition cancels and replaces the second edition, published in 2002, and constitutes
a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) References to IEC TS 60695-5-3 (withdrawn in 2014) have been removed.
b) References to IEC 60695-1-1 are now to its replacements: IEC 60695-1-10 and
IEC 60695-1-11.
c) ISO/TR 9122-1 has been revised by ISO 19706.
d) Table 1 has been updated.
e) References to ISO 11907-2 and ISO 11907-3 have been removed.
f) Terms and definitions have been updated.
g) Text in 6.4 has been updated.
h) Bibliographic references have been updated.
The text of this International Standard is based on the following documents:
FDIS Report on voting
89/1539/FDIS 89/1543/RVD
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.
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.
It has the status of a basic safety publication in accordance with IEC Guide 104 and
ISO/IEC Guide 51.
In this standard, the following print types are used:
Arial bold: terms referred to in Clause 2
This standard is to be read in conjunction with IEC TS 60695-5-2.
A list of all parts in the IEC 60695 series, published under the general title Fire hazard testing,
can be found on the IEC website.

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.
IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates that it
contains colours which are considered to be useful for the correct understanding of its
contents. Users should therefore print this document using a colour printer.

– 6 – IEC 60695-5-1:2021 RLV © IEC 2021
INTRODUCTION
The risk of fire should be considered in any electrical circuit. With regard to this risk, the
circuit and equipment design, the selection of components and the choice of materials should
contribute towards reducing the likelihood of fire even in the event of foreseeable abnormal
use, malfunction or failure. The practical aim should be to prevent ignition caused by electrical
malfunction but, if ignition and fire occur, to control the fire preferably within the bounds of the
enclosure of the electrotechnical product.
In the design of an 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
...

IEC 60695-5-1 ®
Edition 3.0 2021-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
HORIZONTAL PUBLICATION
PUBLICATION HORIZONTALE
Fire hazard testing –
Part 5-1: Corrosion damage effects of fire effluent – General guidance

Essais relatifs aux risques du feu –
Partie 5-1: Effets des dommages de corrosion des effluents du feu –
Recommandations générales
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
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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 corrigendum or an amendment might have been published.

IEC publications search - webstore.iec.ch/advsearchform IEC online collection - oc.iec.ch
The advanced search enables to find IEC publications by a Discover our powerful search engine and read freely all the
variety of criteria (reference number, text, technical publications previews. With a subscription you will always
committee, …). It also gives information on projects, replaced have access to up to date content tailored to your needs.
and withdrawn publications.
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Stay up to date on all new IEC publications. Just Published
containing more than 22 000 terminological entries in English
details all new publications released. Available online and
and French, with equivalent terms in 18 additional languages.
once a month by email.
Also known as the International Electrotechnical Vocabulary

(IEV) online.
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need further assistance, please contact the Customer Service
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IEC 60695-5-1 ®
Edition 3.0 2021-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
HORIZONTAL PUBLICATION
PUBLICATION HORIZONTALE
Fire hazard testing –
Part 5-1: Corrosion damage effects of fire effluent – General guidance

Essais relatifs aux risques du feu –

Partie 5-1: Effets des dommages de corrosion des effluents du feu –

Recommandations générales
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.020 ISBN 978-2-8322-1011-3

– 2 – IEC 60695-5-1:2021 © IEC 2021
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 Fire scenarios and physical fire models . 9
5 General aspects of the corrosivity of fire effluent . 10
5.1 Corrosion damage scenarios . 10
5.2 Types of corrosion damage effects . 12
5.2.1 Introduction . 12
5.2.2 Metal loss . 12
5.2.3 Moving parts becoming immobile . 12
5.2.4 Bridging of conductor circuits . 12
5.2.5 Formation of a non-conducting layer on contact surfaces. 12
5.3 Factors affecting corrosivity . 13
5.3.1 Introduction . 13
5.3.2 The nature of fire effluent . 13
5.3.3 The corrosion environment . 14
6 Principles of corrosion damage measurement . 14
6.1 Introduction . 14
6.2 Generation of the fire effluent . 14
6.2.1 General . 14
6.2.2 Selection of the test specimen to be burned . 15
6.2.3 Selection of the physical fire model . 15
6.3 Assessment of corrosive potential . 15
6.3.1 General . 15
6.3.2 Indirect assessment . 15
6.3.3 Simulated product testing . 16
6.3.4 Product testing . 16
6.4 Consideration of corrosivity test methods . 16
7 Relevance of data to hazard assessment . 18
Bibliography . 19

Figure 1 – Different stages in the development of a fire within a compartment . 10
Figure 2 – Evaluation and consideration of corrosion damage test methods . 17

Table 1 – Characteristics of fire stages (from Table 1 of ISO 19706:2011) . 11
Table 2 – Summary of corrosivity test methods . 16

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FIRE HAZARD TESTING –
Part 5-1: Corrosion damage effects of fire effluent –
General guidance
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 60695-5-1 has been prepared by IEC technical committee 89: Fire
hazard testing.
This third edition cancels and replaces the second edition, published in 2002, and constitutes
a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) References to IEC TS 60695-5-3 (withdrawn in 2014) have been removed.
b) References to IEC 60695-1-1 are now to its replacements: IEC 60695-1-10 and
IEC 60695-1-11.
c) ISO/TR 9122-1 has been revised by ISO 19706.
d) Table 1 has been updated.
– 4 – IEC 60695-5-1:2021 © IEC 2021
e) References to ISO 11907-2 and ISO 11907-3 have been removed.
f) Terms and definitions have been updated.
g) Text in 6.4 has been updated.
h) Bibliographic references have been updated.
The text of this International Standard is based on the following documents:
FDIS Report on voting
89/1539/FDIS 89/1543/RVD
Full
...