EN 60695-8-1:2008

SLOVENSKI STANDARD
01-september-2008
1DGRPHãþD
SIST EN 60695-8-1:2002
Preskušanje požarne ogroženosti - 8-1. del: Oddajanje toplote - Splošno navodilo
(IEC 60695-8-1:2008)
Fire hazard testing - Part 8-1: Heat release - General guidance
Prüfungen zur Beurteilung der Brandgefahr - Teil 8-1: Wärmefreisetzung - Allgemeiner
Leitfaden
Essais relatifs aux risques du feu - Partie 8-1: Dégagement de chaleur - Guide général
Ta slovenski standard je istoveten z: EN 60695-8-1:2008
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 60695-8-1
NORME EUROPÉENNE
June 2008
EUROPÄISCHE NORM
ICS 13.220.40; 29.020 Supersedes EN 60695-8-1:2001

English version
Fire hazard testing -
Part 8-1: Heat release -
General guidance
(IEC 60695-8-1:2008)
Essais relatifs aux risques du feu -  Prüfungen zur Beurteilung der
Partie 8-1: Dégagement de chaleur - Brandgefahr -
Guide général Teil 8-1: Wärmefreisetzung -
(CEI 60695-8-1:2008) Allgemeiner Leitfaden
(IEC 60695-8-1:2008)
This European Standard was approved by CENELEC on 2008-05-01. 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, Bulgaria, 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

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

© 2008 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 60695-8-1:2008 E
Foreword
The text of document 89/856/FDIS, future edition 2 of IEC 60695-8-1, prepared by IEC TC 89, Fire
hazard testing, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as
EN 60695-8-1 on 2008-05-01.
This European Standard supersedes EN 60695-8-1:2001.
The main changes with respect to EN 60695-8-1:2001 are listed below:
– editorial changes throughout;
– revised terms and definitions;
– new text concerning bomb calorimetry;
– revised Table 1a;
– new Clause 5 – Parameters used to report heat release data;
– introduction of intermediate scale fire test.
This standard is to be used in conjunction with IEC/TR 60695-8-2.
The following dates were fixed:

– latest date by which the EN has to be implemented

at national level by publication of an identical
(dop) 2009-02-01
national standard or by endorsement

– latest date by which the national standards conflicting
(dow) 2011-05-01
with the EN have to be withdrawn
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 60695-8-1:2008 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 60695-4 NOTE  Harmonized as EN 60695-4:2006 (not modified).
IEC 60836 NOTE  Harmonized as EN 60836:2005 (not modified).
IEC 61099 NOTE  Harmonized as EN 61099:1992 (not modified).
IEC 60867 NOTE  Harmonized as EN 60867:1994 (not modified).
IEC 60296 NOTE  Harmonized as EN 60296:2004 (not modified).
__________
- 3 - EN 60695-8-1:2008
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

1)
- - Reaction to fire tests for building products - EN 13823 -
Building products excluding floorings exposed
to the thermal attack by a single burning item

IEC 60695 Series Fire hazard testing EN 60695 Series

1)
IEC/TR 60695-8-2 - Fire hazard testing - - -
Part 8-2: Heat release - Summary and
relevance of test methods
IEC Guide 104 1997 The preparation of safety publications - -
and the use of basic safety publications and
group safety publications
ISO/IEC Guide 51 1999 Safety aspects - Guidelines for their inclusion - -
in standards
1) 2)
ISO 1716 - Reaction to fire tests for building products - EN ISO 1716 2002
Determination of the heat of combustion

ISO 13943 2000 Fire safety - Vocabulary EN ISO 13943 2000

1)
Undated reference.
2)
Valid edition at date of issue.

IEC 60695-8-1
Edition 2.0 2008-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
BASIC SAFETY PUBLICATION
PUBLICATION FONDAMENTALE DE SÉCURITÉ
Fire hazard testing –
Part 8-1: Heat release – General guidance

Essais relatifs aux risques du feu –
Partie 8-1: Dégagement de chaleur – Guide général

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
T
CODE PRIX
ICS 13.220.40; 29.020 ISBN 2-8318-9646-0

– 2 – 60695-8-1 © IEC:2008
CONTENTS
FOREWORD.4
INTRODUCTION.6

1 Scope.7
2 Normative references.7
3 Terms and definitions .7
4 Principles of determining heat release.10
4.1 Complete combustion measured by the oxygen bomb calorimeter (ISO 1716) .10
4.2 Incomplete combustion .11
4.2.1 Measurement techniques .11
4.2.2 Heat release by oxygen consumption .11
4.2.3 Heat release by carbon dioxide generation .12
4.2.4 Heat release by increase of gas temperature.12
5 Parameters used to report heat release data.14
5.1 Heat of combustion (gross and net) .14
5.2 Heat release rate.14
5.3 Heat release.15
5.4 Heat release rate per unit area.15
5.5 Total heat release.16
5.6 Peak heat release rate.16
5.7 Time to peak heat release rate .16
5.8 Effective heat of combustion.16
5.8.1 Measurement and calculation.16
5.8.2 Examples.17
5.9 FIGRA index.18
5.10 ARHE and MARHE .19
6 Considerations for the selection of test methods .21
6.1 Ignition sources .21
6.2 Type of test specimen.21
6.3 Choice of conditions .21
6.4 Test apparatus .21
6.4.1 Small-scale fire test apparatus .21
6.4.2 Intermediate and large-scale fire test apparatus .22
6.4.3 Comparison between small-scale and intermediate/large-scale fire
test methods.22
7 Relevance of heat release data.22
7.1 Contribution to fire hazard.22
7.2 Secondary ignition and flame spread.22
7.3 Determination of self-propagating fire thresholds .22
7.4 Probability of reaching flash-over .23
7.5 Smoke and toxic gas production .23
7.6 The role of heat release testing in research and development .23

Bibliography .24

Figure 1 – Heat release rate (HRR) curve.15

60695-8-1 © IEC:2008 – 3 –
Figure 2 – Heat release (HR) curve .15
Figure 3 – Heat release rate (HRR*) per unit area curve .16
Figure 4 – Mass loss curve.17
Figure 5 – FIGRA curve derived from Figure 1.18
Figure 6 – Illustrative HRR curve .19
Figure 7 – FIGRA curve derived from Figure 6.19
Figure 8 – ARHE curve derived from Figure 1.20
Figure 9 – ARHE curve derived from Figure 6.20

Table 1 – Heat of combustion.13
-1
Table 1a – Relationship between heat of combustion expressed in units of kJ·g of fuel
-1
burned and kJ·g of oxygen consumed for a variety of fuels .13
-1
Table 1b – Relationship between heat of combustion expressed in units of kJ·g of fuel
-1
burned and kJ·g of oxygen consumed for a variety of insulating liquids .14

– 4 – 60695-8-1 © IEC:2008
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FIRE HAZARD TESTING –
Part 8-1: Heat release –
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 ag
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