EN 61034-2:2005

SLOVENSKI SIST EN 61034-2:2005

STANDARD
december 2005
Merjenje gostote dima pri gorenju kablov pri določenih pogojih – 2. del:
Preskusni postopek in zahteve (IEC 61034-2:2005)
Measurement of smoke density of cables burning under defined conditions – Part
2: Test procedure and requirements (IEC 61034-2:2005)
ICS 13.220.40; 29.060.20 Referenčna številka
©  Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno

EUROPEAN STANDARD EN 61034-2
NORME EUROPÉENNE
EUROPÄISCHE NORM August 2005
ICS 13.220.40; 29.020; 29.060.20 Supersedes EN 50268-2:1999

English version
Measurement of smoke density of cables
burning under defined conditions
Part 2: Test procedure and requirements
(IEC 61034-2:2005)
Mesure de la densité de fumées Messung der Rauchdichte von Kabeln
dégagées par des câbles brûlant und isolierten Leitungen beim Brennen
dans des conditions définies unter definierten Bedingungen
Partie 2: Procédure d'essai et exigences Teil 2: Prüfverfahren und Anforderungen
(CEI 61034-2:2005) (IEC 61034-2:2005)

This European Standard was approved by CENELEC on 2005-06-01. 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 Central Secretariat 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 Central Secretariat has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden,
Switzerland and United Kingdom.

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

Central Secretariat: rue de Stassart 35, B - 1050 Brussels

© 2005 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. EN 61034-2:2005 E
Foreword
The text of document 20/755/FDIS, future edition 3 of IEC 61034-2, prepared by IEC TC 20, Electric
cables, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as
EN 61034-2 on 2005-06-01.
The principal changes with respect to EN 50268-2 are as follows:
a) inclusion of non-circular cables;
b) addition of guidance on testing cables above 80 mm diameter;
c) delineation of elements of the test report;
d) addition of guidance on the calculation for other parameters for fire safety engineering purposes.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2006-03-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2008-06-01
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 61034-2:2005 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following note has to be added for the standard indicated:
IEC 60695-6-1 NOTE Harmonized as EN 60695-6-1:2005 (not modified).
__________
- 3 - EN 61034-2:2005
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 Where an international publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
Publication Year Title EN/HD Year
IEC 60695-4 2005 Fire hazard testing - Part 4: Terminology - -
concerning fire tests for electrotechnical
products
IEC 61034-1 2005 Measurement of smoke density of cables EN 61034-1 2005
burning under defined conditions
Part 1: Test apparatus
IEC Guide 104 1997 The preparation of safety publications - -
and the use of basic safety publications
and group safety publications
ISO 13943 2000 Fire safety - Vocabulary EN ISO 13943 2000

NORME CEI
INTERNATIONALE
IEC
61034-2
INTERNATIONAL
Troisième édition
STANDARD
Third edition
2005-04
PUBLICATION GROUPÉE DE SÉCURITÉ
GROUP SAFETY PUBLICATION
Mesure de la densité de fumées
dégagées par des câbles brûlant
dans des conditions définies –
Partie 2:
Procédure d'essai et exigences

Measurement of smoke density of cables
burning under defined conditions –
Part 2:
Test procedure and requirements

 IEC 2005 Droits de reproduction réservés  Copyright - all rights reserved
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électronique ou mécanique, y compris la photo-copie et les photocopying and microfilm, without permission in writing from
microfilms, sans l'accord écrit de l'éditeur. the publisher.
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Telephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmail@iec.ch Web: www.iec.ch
CODE PRIX
P
Commission Electrotechnique Internationale
PRICE CODE
International Electrotechnical Commission
МеждународнаяЭлектротехническаяКомиссия
Pour prix, voir catalogue en vigueur
For price, see current catalogue

61034-2  IEC:2005 – 3 –
CONTENTS
FOREWORD.5
INTRODUCTION.9

1 Scope.11
2 Normative references.11
3 Terms and definitions .11
4 Test apparatus .11
5 Test assembly .13
5.1 Test sample.13
5.2 Cable test piece selection and test sample assembly .13
5.3 Positioning of test sample .15
6 Test procedure .15
7 Evaluation of test results.17
8 Retest procedure .17
9 Test report.17

Bibliography .31

Annex A (informative) Guidance on the principles and use of smoke measurements .23
Annex B (informative) Recommended performance requirement .29

Figure 1 — Method of binding for bundles of test pieces .19
Figure 2 — Method of support of test sample.21

61034-2  IEC:2005 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
_________
MEASUREMENT OF SMOKE DENSITY OF CABLES
BURNING UNDER DEFINED CONDITIONS –

Part 2: Test procedure and requirements

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 provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with an IEC Publication.
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 61034-2 has been prepared by IEC technical committee 20: Electric
cables.
This third edition cancels and replaces the second edition published in 1997. It constitutes a
technical revision.
The principal changes with respect to the previous edition are as follows:
a) inclusion of cables down to 1 mm diameter;
b) inclusion of non-circular cables;
c) addition of guidance on testing cables above 80 mm diameter;
d) delineation of elements of the test report;

61034-2  IEC:2005 – 7 –
e) addition of guidance on the calculation for other parameters for fire safety engineering
purposes;
f) removal of minor differences with equivalent CENELEC work to allow parallel voting with
that body.
It has the status of a group safety publication in accordance with IEC Guide 104.
The text of this standard is based on the following documents:
FDIS Report on voting
20/755/FDIS 20/767/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
IEC 61034 consists of the following parts, under the general title Measurement of smoke
density of cables burning under defined conditions,
Part 1 : Test apparatus
Part 2 : Test procedure and requirements
The committee has decided that the contents of this publication will remain unchanged until the
maintenance result date indicated on the IEC web site under "http://webstore.iec.ch" in the data
related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
61034-2  IEC:2005 – 9 –
INTRODUCTION
The measurement of smoke density is an important aspect in the evaluation of the burning
performance of cables as it is related to the evacuation of persons and accessibility for
firefighting.
IEC 61034 is published in two parts, which together specify a method of test for measurement
of smoke density of cables burning under defined conditions. Users of this test are reminded
that the configurations of cable in the test (i.e. as test pieces or bundles of test pieces) may not
represent actual installation conditions.
Part 1 gives details of the test apparatus and verification procedure to be used for the
measurement of smoke density of the products of combustion of cables burnt under defined
³
conditions. It includes details of a test enclosur
...