EN 60695-6-2:2011

Fire hazard testing - Part 6-2: Smoke obscuration - Summary and relevance of test methods

IEC 60695-6-2:2011 provides a summary of the test methods that are used in the assessment of smoke obscuration. It presents a brief summary of static and dynamic test methods in common use, either as international standards or national or industry standards. It includes special observations on their relevance to electrotechnical products and their materials and to fire scenarios, and it gives recommendations on their use. This standard cancels and replaces IEC/TS 60695-6-2 published in 2005. This first edition constitutes a technical revision. The main changes with respect to the previous edition are listed below: - this publication has been re-designated as an International Standard; - updated normative references; - updated terms and definitions; new test method Clause 7.3.2; - numerous editorial changes of a technical nature throughout the publication. This standard has the status of a basic safety publication in accordance with IEC Guide 104 and ISO/IEC Guide 51. This publication is to be read in conjunction with  IEC 60695-6-1:2005.

Prüfungen zur Beurteilung der Brandgefahr - Teil 6-2: Sichtminderung durch Rauch - Zusammenfassung und Anwendbarkeit von Prüfverfahren

Essais relatifs aux risques du feu - Partie 6-2: Opacité des fumées - Résumé et pertinence des méthodes d'essais

La CEI 60695-6-2:2011 donne un résumé des méthodes d'essais qui sont utilisées pour évaluer l'obscurcissement par la fumée. Elle présente un bref résumé des méthodes d'essais dynamiques et statiques communément utilisées, aussi bien comme normes internationales ou nationales ou normes industrielles. Elle inclut des observations particulières relatives à un scénario feu, pour les produits électrotechniques et leurs matériaux, et donne des recommandations pour leurs utilisations. Cette norme annule et remplace la CEI/TS 60695-6-2 publiée en 2005. Cette première édition constitue une révision technique. Les principales modifications par rapport à l'édition antérieure sont indiquées ci-dessous: - Cette publication a été reprise pour devenir une norme internationale; - mise à jour des références normatives; - mise à jour de termes et définitions; - nouvelle méthode d'essai Article 7.3.2; - nombreuses modifications rédactionnelles de nature technique dans toute la publication. La présente norme a le statut de publication fondamentale de sécurité, conformément au Guide CEI 104 et au guide ISO/CEI 51. Cette publication doit être lue conjointement avec la  CEI 60695-6-1:2005.

Preskušanje požarne ogroženosti - 6-2. del: Otemnitev dima - Povzetek in relevantnost preskusnih metod

Ta del IEC 60695 zagotavlja povzetek preskusnih metod, ki se uporabljajo pri ocenjevanju otemnitve dima. Predstavlja kratek povzetek statičnih in dinamičnih preskusnih metod v splošni uporabi, v obliki mednarodnih standardov, državnih ali industrijskih standardov. Vključuje posebne ugotovitve glede njihove pomembnosti za elektrotehnične proizvode in njihove materiale ter za požarne scenarije in podaja priporočila za njihovo uporabo. Ta osnovna varnostna objava je namenjena temu, da jo uporabljajo tehnični odbori pri pripravi standardov v skladu z načeli, opredeljenimi v Vodilu 104 IEC in Vodilu 51 ISO/IEC. Ena od odgovornosti tehničnega odbora je, če je to primerno, uporabiti temeljne varnostne objave pri pripravi svojih objav. Zahteve, preskusne metode ali preskusni pogoji te temeljne varnostne objave se ne uporabljajo, razen če se ustrezne publikacije nanje izrecno sklicujejo ali jih vključujejo.

General Information

• Status: Withdrawn
• Publication Date: 20-Oct-2011
• Withdrawal Date: 28-Sep-2014
• ICS: 13.220.99 - Other standards related to protection against fire
• ICS: 29.020 - Electrical engineering in general
• Technical Committee: CLC/SR 89 - Fire hazard testing
• Drafting Committee: IEC/TC 89 - IEC_TC_89
• Parallel Committee: IEC/TC 89 - IEC_TC_89
• Current Stage: 9960 - Withdrawal effective - Withdrawal
• Start Date: 10-Jul-2021
• Completion Date: 10-Jul-2021
• Ref Project: SIST EN 60695-6-2:2012 - Fire hazard testing - Part 6-2: Smoke obscuration - Summary and relevance of test methods

Relations

• Replaced By: EN IEC 60695-6-2:2018 - Fire hazard testing - Part 6-2: Smoke obscuration - Summary and relevance of test methods
• Effective Date: 25-Sep-2018

Standards Content (Sample)

SLOVENSKI STANDARD
01-januar-2012
Preskušanje požarne ogroženosti - 6-2. del: Otemnitev dima - Povzetek in
relevantnost preskusnih metod
Fire hazard testing - Part 6-2: Smoke obscuration - Summary and relevance of test
methods
Prüfungen zur Beurteilung der Brandgefahr - Teil 6-2: Sichtminderung durch Rauch -
Zusammenfassung und Anwendbarkeit von Prüfverfahren
Essais relatifs aux risques du feu - Partie 6-2: Opacité des fumées - Résumé et
pertinence des méthodes d'essai
Ta slovenski standard je istoveten z: EN 60695-6-2:2011
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 60695-6-2
NORME EUROPÉENNE
October 2011
EUROPÄISCHE NORM
ICS 13.220.99; 29.020
English version
Fire hazard testing -
Part 6-2: Smoke obscuration -
Summary and relevance of test methods
(IEC 60695-6-2:2011)
Essais relatifs aux risques du feu -  Prüfungen zur Beurteilung der
Partie 6-2: Opacité des fumées - Brandgefahr -
Résumé et pertinence des méthodes Teil 6-2: Sichtminderung durch Rauch -
d'essais Zusammenfassung und Anwendbarkeit
(CEI 60695-6-2:2011) von Prüfverfahren
(IEC 60695-6-2:2011)
This European Standard was approved by CENELEC on 2011-09-29. 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy,
Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia,
Spain, Sweden, Switzerland and the United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Management Centre: Avenue Marnix 17, B - 1000 Brussels

© 2011 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 60695-6-2:2011 E
Foreword
The text of document 89/1057/FDIS, future edition 1 of IEC 60695-6-2, prepared by IEC/TC 89 "Fire
hazard testing" was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as
The following dates are fixed:
(dop) 2012-06-29
• latest date by which the document has
to be implemented at national level by
publication of an identical national
standard or by endorsement
(dow) 2014-09-29
• latest date by which the national
standards conflicting with the
document have to be withdrawn
This standard is to be used in conjunction with EN 60695-6-1.
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 60695-6-2:2011 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 60332-3-10 NOTE  Harmonized as EN 60332-3-10.
IEC 61034-1 NOTE  Harmonized as EN 61034-1.
IEC 61034-2 NOTE  Harmonized as EN 61034-2.
ISO 5659-2 NOTE  Harmonized as EN ISO 5659-2.

- 3 - EN 60695-6-2:2011
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following referenced documents are indispensable for the application 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.

NOTE  When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD
applies.
Publication Year Title EN/HD Year

IEC 60695-6-1 2005 Fire hazard testing - EN 60695-6-1 2005
Part 6-1: Smoke obscuration - General
guidance
IEC Guide 104 - The preparation of safety publications and the - -
use of basic safety publications and group
safety publications
ISO 5725-2 1994 Accuracy (trueness and precision) of - -
measurement methods and results -
Part 2: Basic method for the determination of
repeatability and reproducibility of a standard
measurement method
ISO 13943 2008 Fire safety - Vocabulary EN ISO 13943 2010

ISO 19706 2007 Guidelines for assessing the fire threat to - -
people
IEC 60695-6-2 ®
Edition 1.0 2011-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
BASIC SAFETY PUBLICATION
PUBLICATION FONDAMENTALE DE SÉCURITÉ

Fire hazard testing –
Part 6-2: Smoke obscuration – Summary and relevance of test methods

Essais relatifs aux risques du feu –
Partie 6-2: Opacité des fumées – Résumé et pertinence des méthodes d'essais

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX V
ICS 13.220.99; 29.020 ISBN 978-2-88912-625-5

– 2 – 60695-6-2 © IEC:2011
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references. 7
3 Terms and definitions . 7
4 Types of of test method . 11
4.1 General . 11
4.2 Physical fire model . 11
4.3 Static test methods . 11
4.4 Dynamic test methods . 11
5 Types of test specimen . 13
6 Published static test methods . 13
6.1 General . 13
6.2 Determination of smoke opacity in a 0,51 m chamber . 13
6.2.1 Standards which use a vertically oriented test specimen . 13
6.2.2 Standard which uses a horizontally oriented test specimen . 15
6.3 Determination of smoke density in a 27 m smoke chamber . 17
6.3.1 Standards . 17
6.3.2 Purpose and principle . 17
6.3.3 Test specimen . 17
6.3.4 Method . 17
6.3.5 Repeatability and reproducibility . 18
6.3.6 Relevance of test data and special observations . 18
6.4 Determination of specific optical density using a dual-chamber test . 18
6.4.1 Standards . 18
6.4.2 Purpose and principle . 18
6.4.3 Test specimen . 18
6.4.4 Method . 19
6.4.5 Repeatability and reproducibility . 19
6.4.6 Relevance of test data and special observations . 19
7 Published dynamic test methods . 19
7.1 General . 19
7.2 Determination of smoke density generated by electric cables mounted on a
horizontal ladder . 19
7.2.1 Standards . 19
7.2.2 Purpose and principle . 19
7.2.3 Test specimen . 19
7.2.4 Method . 19
7.2.5 Repeatability and reproducibility . 19
7.2.6 Relevance of test data and special observations . 20
7.3 Determination of smoke generated by electrical cables mounted on a vertical
ladder . 20
7.3.1 Standards . 20
7.3.2 prEN 50399 . 21
7.4 Determination of smoke using a cone calorimeter . 22
7.4.1 Standards . 22

60695-6-2 © IEC:2011 – 3 –
7.4.2 Purpose and principle . 22
7.4.3 Test specimen . 22
7.4.4 Method . 22
7.4.5 Repeatability and reproducibility . 23
7.4.6 Relevance of test data and special observations . 23
8 Overview of methods and relevance of data . 24
Annex A (informative) Repeatability and reproducibility data – NBS smoke chamber –
Interlaboratory tests from the French standard NF C20-902-1 and NF C20-902-2 . 27
Annex B (informative) Repeatability and reproducibility data – ISO 5659-2 . 28
Annex C (informative) Repeatability and reproducibility data – "Three metre cube"
smoke chamber – French interlaboratory tests according to IEC 61034-2 . 30
Annex D (informative) Repeatability and reproducibility data – NFPA 262 . 31
Annex E (informative) Precision data of smoke measurement in ISO 5660-2 . 32
Bibliography . 33

Table 1 – Characteristics of fire stages (ISO 19706) . 12
Table 2 – Overview of smoke test methods. 25
Table A.1 – Measurement of D . 27
m
Table B.1 – Measurement of D 10 . 28
s
Table B.2 – Test results for poly-carbonate. 28
Table B.3 – Test results for PVC flooring . 29
Table C.1 – Measurement of transmission expressed as a percentage . 30
Table E.1 – Combinations of materials of upholstered furniture . 32
Table E.2 – Repeatability and Reproducibility of specific extinction area (m /kg). 32

– 4 – 60695-6-2 © IEC:2011
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FIRE HAZARD TESTING –
Part 6-2: Smoke obscuration –
Summary and relevance of test methods

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
...