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EN 60695-1-20:2016

(Main)

Fire hazard testing - Part 1-20: Guidance for assessing the fire hazard of electrotechnical products - Ignitability - General guidance

Fire hazard testing - Part 1-20: Guidance for assessing the fire hazard of electrotechnical products - Ignitability - General guidance

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

Prüfungen zur Beurteilung der Brandgefahr - Teil 1-20: Anleitung zur Beurteilung der Brandgefahr von elektrotechnischen Erzeugnissen - Entzündbarkeit - Allgemeiner Leitfaden

Essais relatifs aux risques du feu - Partie 1-20: Lignes directrices pour l'évaluation des risques du feu des produits électrotechniques - Allumabilité - Lignes directrices générales

L'IEC 60695-1-20:2016 donne des lignes directrices concernant l'allumabilité des produits électrotechniques et des matériaux dont ils sont constitués. Elle fournit des lignes directrices sur: les principes de l'allumabilité; le choix des méthodes d'essai appropriées, et l'utilisation et l'interprétation des résultats. Cette première édition de l'IEC 60695-1-20 annule et remplace la première édition de l'IEC TS 60695-1-20 parue en 2008. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente: - l'ISO 5660-1 a été ajoutée aux références normatives; - les définitions de "pyrolyse" et de "court-circuit" ont été ajoutées à l'Article 3; - des parties de l'introduction ont été déplacées vers l'Article 5 et font maintenant partie du texte normatif; - et l'Article 5 comprend maintenant plusieurs énoncés obligatoires. La présente partie de l'IEC 60695 est destinée à être utilisée par les comités d'études pour l'établissement de leurs normes conformément aux principes exposés dans le Guide IEC 104 et dans le Guide ISO/IEC 51. Mots clés: Risque du feu, Méthode d'essai du feu, Ingénierie de la sécurité incendie, Allumabilité

Preskušanje požarne ogroženosti - 1-20. del: Navodilo za ocenjevanje požarne ogroženosti elektrotehničnih izdelkov - Vnetljivost - Splošno navodilo (IEC 60695-1-20:2016)

Ta del standarda IEC 60695 podaja smernice glede vnetljivosti elektrotehničnih izdelkov in
materialov, iz katerih so izdelani. Standard podaja smernice glede:
a) načel vnetljivosti;
b) izbire ustreznih preskusih metod; ter
c) uporabe in interpretacije rezultatov.
Ta del standarda IEC 60695 je namenjen tehničnim odborom za pripravo standardov v skladu z načeli vodil IEC 104 in ISO/IEC 51. Ena od odgovornosti tehničnega odbora je, da pri pripravi publikacij uporablja osnovne varnostne publikacije (kjer je to primerno). Zahteve, preskusne metode ali preskusni pogoji iz te osnovne varnostne publikacije se ne uporabljajo, razen če so izrecno navedeni ali zajeti v ustreznih publikacijah.

General Information

Status
Published
Publication Date
05-May-2016
Withdrawal Date
01-Mar-2019
ICS
13.220.40 - Ignitability and burning behaviour of materials and products
29.020 - Electrical engineering in general
Technical Committee
CLC/SR 89 - Fire hazard testing
Drafting Committee
IEC/TC 89 - IEC_TC_89
Current Stage
6060 - Document made available - Publishing
Start Date
06-May-2016
Completion Date
06-May-2016
Ref Project
SIST EN 60695-1-20:2016 - Fire hazard testing - Part 1-20: Guidance for assessing the fire hazard of electrotechnical products - Ignitability - General guidance (IEC 60695-1-20:2016)

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SLOVENSKI STANDARD
01-julij-2016
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Fire hazard testing - Part 1-20: Guidance for assessing the fire hazard of electrotechnical
products - Ignitability - General guidance (IEC 60695-1-20:2016)
Essais relatifs aux risques du feu - Partie 1-20: Lignes directrices pour l'évaluation des
risques du feu des produits électrotechniques - Allumabilité - Lignes directrices
générales
Ta slovenski standard je istoveten z: EN 60695-1-20:2016
ICS:
13.220.40 Sposobnost vžiga in Ignitability and burning
obnašanje materialov in behaviour of materials and
proizvodov pri gorenju products
29.020 Elektrotehnika na splošno Electrical engineering in
general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN 60695-1-20

NORME EUROPÉENNE
EUROPÄISCHE NORM
May 2016
ICS 13.220.40; 29.020
English Version
Fire hazard testing -
Part 1-20: Guidance for assessing the fire hazard of
electrotechnical products - Ignitability - General guidance
(IEC 60695-1-20:2016)
Essais relatifs aux risques du feu -  Prüfungen zur Beurteilung der Brandgefahr -
Partie 1-20: Lignes directrices pour l'évaluation des risques Teil 1-20: Anleitung zur Beurteilung der Brandgefahr von
du feu des produits électrotechniques - Allumabilité - Lignes elektrotechnischen Erzeugnissen - Entzündbarkeit -
directrices générales Allgemeiner Leitfaden
(IEC 60695-1-20:2016) (IEC 60695-1-20:2016)
This European Standard was approved by CENELEC on 2016-03-02. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2016 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 60695-1-20:2016 E
European foreword
The text of document 89/1296/FDIS, future edition 1 of IEC 60695-1-20:2016, prepared by
IEC/TC 89 "Fire hazard testing" was submitted to the IEC-CENELEC parallel vote and approved by
CENELEC as EN 60695-1-20:2016.

The following dates are fixed:
(dop) 2016-12-02
• latest date by which the document has to be
implemented at national level by
publication of an identical national
standard or by endorsement
• latest date by which the national (dow) 2019-03-02
standards conflicting with the
document have to be withdrawn
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such
patent rights.
Endorsement notice
The text of the International Standard IEC 60695-1-20:2016 was approved by CENELEC as a
European Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards indicated:

IEC/TS 62441 NOTE Harmonized as CLC/TS 62441.
IEC 60112 NOTE Harmonized as EN 60112.
IEC 60587 NOTE Harmonized as EN 60587.
IEC 60099-4 NOTE Harmonized as EN 60099-4.
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

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 any amendments) applies.

NOTE 1 When an International Publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available here:
www.cenelec.eu
Publication Year Title EN/HD Year

IEC 60695-1-10 -  Fire hazard testing - EN 60695-1-10 -
Part 1-10: Guidance for assessing the fire
hazard of electrotechnical products -
General guidelines
IEC 60695-1-11 -  Fire hazard testing - EN 60695-1-11 -
Part 1-11: Guidance for assessing the fire
hazard of electrotechnical products - Fire
hazard assessment
IEC 60695-1-12 -  Fire hazard testing - EN 60695-1-12 -
Part 1-12: Guidance for assessing the fire
hazard of electrotechnical products - Fire
safety engineering
IEC/TR 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 60695-2-11 -  Fire hazard testing - EN 60695-2-11 -
Part 2-11: Glowing/hot-wire based test
methods - Glow-wire flammability test
method for end-products (GWEPT)
IEC 60695-2-12 -  Fire hazard testing - EN 60695-2-12 -
Part 2-12: Glowing/hot-wire based test
methods - Glow-wire flammability index
(GWFI) test method for materials
IEC 60695-2-13 -  Fire hazard testing - EN 60695-2-13 -
Part 2-13: Glowing/hot-wire based test
methods - Glow-wire ignition temperature
(GWIT) test method for materials
IEC 60695-4 2012 Fire hazard testing - EN 60695-4 2012
Part 4: Terminology concerning fire tests
for electrotechnical products
IEC 60695-11-5 -  Fire hazard testing - EN 60695-11-5 -
Part 11-5: Test flames - Needle-flame test
method - Apparatus, confirmatory test
arrangement and guidance
Publication Year Title EN/HD Year

IEC 60695-11-10 -  Fire hazard testing - EN 60695-11-10 -
Part 11-10: Test flames - 50 W horizontal
and vertical flame test methods
IEC/TS 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
IEC 60695-11-20 -  Fire hazard testing - EN 60695-11-20 -
Part 11-20: Test flames - 500 W flame test
methods
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 -  Fire safety - Vocabulary EN ISO 13943 -
ISO 871 2006 Plastics - Determination of ignition - -
temperature using a hot-air furnace
ISO 2592 -  Determination of flash and fire points - EN ISO 2592 -
Cleveland open cup method
ISO 2719 -  Determination of flash point - Pensky- EN ISO 2719 -
Martens closed cup method
ISO 5657 -  Reaction to fire tests - Ignitability of - -
building products using a radiant heat
source
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 10840 -  Plastics - Guidance for the use of standard - -
fire tests
IEC 60695-1-20 ®
Edition 1.0 2016-01
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
BASIC SAFETY PUBLICATION
PUBLICATION FONDAMENTALE DE SÉCURITÉ

Fire hazard testing –
Part 1-20: Guidance for assessing the fire hazard of electrotechnical products –

Ignitability – General guidance

Essais relatifs aux risques du feu –

Partie 1-20: Lignes directrices pour l'évaluation des risques du feu des produits

électrotechniques – Allumabilité – Lignes directrices générales

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 13.220.40, 29.020 ISBN 978-2-8322-3146-3

– 2 – IEC 60695-1-20:2016 © IEC 2016
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references. 6
3 Terms and definitions . 7
4 Principles of ignitability . 12
4.1 Gases . 12
4.1.1 Overview . 12
4.1.2 Flammability limits . 12
4.1.3 Arc fires . 12
4.2 Liquids . 13
4.2.1 Overview . 13
4.2.2 Ignition parameters . 13
4.2.3 Insulating liquids . 13
4.3 Solids . 13
4.3.1 Overview . 13
4.3.2 Parameters affecting ignition . 14
4.3.3 Metals . 14
4.3.4 Carbon (graphite) and carbonaceous char . 15
4.3.5 Reactive substances . 15
4.3.6 Dust clouds . 15
5 Consideration for the selection of test methods . 15
5.1 General . 15
5.2 Fire scenario . 16
5.3 Ignition sources . 16
5.3.1 General . 16
5.3.2 Internal ignition sources . 16
5.3.3 External ignition sources . 17
5.3.4 Arc ignition of materials . 18
5.4 Types of test specimen. 19
5.5 Test procedure and apparatus . 20
6 Use and interpretation of results . 20
Annex A (informative) Examples of accidents due to arc fires in underground
hydroelectric power plants or urban substations . 21
A.1 General . 21
A.2 Examples which are generally available (non-exhaustive list) . 21
A.2.1 Underground hydroelectric power plants . 21
A.2.2 Urban substations (non-exhaustive list) . 21
Bibliography . 22

IEC 60695-1-20:2016 © IEC 2016 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FIRE HAZARD TESTING –
Part 1-20: Guidance for assessing the
fire hazard of electrotechnical products –
Ignitability – General guidance

FOREWORD
1) The International Electrotechnical Commiss
...

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Fire hazard testing - Part 1-30: Guidance for assessing the fire hazard of electrotechnical products - Preselection testing process - General guidelines
SIST EN 60695-1-30:2017

IEC 60695-1-30:2008 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. The major changes with respect to the previous edition are as follows: - Further explanation given in the introduction and Scope - Clause 3 changes to the definitions - Clause 4 clarifications of the principles of product design considering preselection - Clause 5 clarifications of the advantages and limitations of preselection - Clause 6 clarifications of the aspects of preselection relative to hazard assessment - Annex A changes in the references for examples of test methods which may be relevant to preselection - Annex B changes in the illustrative example of the flowchart of the use of preselection tests for resistance to fire hazards of a specific product type. This publication has the status of a basic safety publication in accordance with IEC Guide 104 and ISO/IEC Guide 51.

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