IEC 60695-11-2:2013

Fire hazard testing - Part 11-2: Test flames - 1 kW pre-mixed flame - Apparatus, confirmatory test arrangement and guidance

IEC 60695-11-2:2013 gives the requirements for the production and confirmation of a nominal 1 kW, propane/air pre-mixed test flame. This basic safety publication is 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. 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 second edition of IEC 60695-11-2 cancels and replaces the first edition published in 2003. It constitutes a technical revision. This second edition includes the following significant technical changes with respect to the previous edition:
- editorial changes to align with other TC 89 test flame publications;
- editorially updated throughout;
- technical changes to the burner set up requirements (see 4.1, 4.2.2, 5 and Fig. A.6);
- technical changes to the test flame confirmation procedure (see 6.2 and 6.3). It has the status of a horizontal standard in accordance with IEC Guide 104 and ISO/IEC Guide 51. Key words: Flame, Pre-mixed flame 1 kW test flame

Essais relatifs aux risques du feu - Partie 11-2: Flammes d'essai - Flamme à prémélange de 1 kW nominal - Appareillage, disposition d'essai de vérification et indications

L'IEC 60695-11-2:2013 donne les exigences pour la production et la validation d'une flamme d'essai de type à prémélange à base de propane/air de 1 kW nominal. La présente publication fondamentale de sécurité est destinée à être utilisée par les comités d'études dans le cadre de l'élaboration de normes conformément aux principes établis dans le Guide CEI 104 et le Guide ISO/CEI 51. 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 d'essai ou les conditions d'essai de la présente publication fondamentale de sécurité ne s'appliquent pas sauf référence spécifique ou inclusion dans les publications correspondantes. Cette deuxième édition de la CEI 60695-11-2 annule et remplace la première édition publiée en 2003. Elle constitue une révision technique. Cette deuxième édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
- modifications rédactionnelles pour correspondre à d'autres publications sur la flamme d'essai du TC 89;
- actualisation rédactionnelle de l'ensemble du texte;
- modifications techniques apportées aux exigences de montage du brûleur - voir 4.1, 4.2.2, 5 et Fig. A.6;
- modifications techniques apportées à la procédure de confirmation de la flamme d'essai - voir 6.2 et 6.3. Elle a le statut de norme horizontale conformément au IEC Guide 104 et au Guide ISO/CEI 51. Mots clés: Flamme, Flamme d'essai de type à prémélange de 1 kW

General Information

• Status: Published
• Publication Date: 09-Dec-2013
• ICS: 13.220.40 - Ignitability and burning behaviour of materials and products
• ICS: 31.040.10 - Fixed resistors
• Technical Committee: TC 89 - Fire hazard testing
• Drafting Committee: WG 12 - TC 89/WG 12
• Current Stage: DELPUB - Deleted Publication
• Start Date: 08-Jun-2017
• Completion Date: 26-Oct-2025

Relations

• Revises: IEC 60695-11-2:2003/COR1:2006 - Corrigendum 1 - Fire hazard testing - Part 11-2: Test flames - 1 kW nominal pre-mixed flame - Apparatus, confirmatory test arrangement and guidance
• Effective Date: 05-Sep-2023
• Revises: IEC 60695-11-2:2003 - Fire hazard testing - Part 11-2: Test flames - 1 kW nominal pre-mixed flame - Apparatus, confirmatory test arrangement and guidance
• Effective Date: 05-Sep-2023
• Revised: IEC 60695-11-2:2017 - Fire hazard testing - Part 11-2: Test flames - 1 kW pre-mixed flame - Apparatus, confirmatory test arrangement and guidance
• Effective Date: 05-Sep-2023

Overview

IEC 60695-11-2:2013 is an essential international standard published by the International Electrotechnical Commission (IEC) that specifies the requirements for the production and confirmation of a nominal 1 kW propane/air pre-mixed test flame. This standard is a fundamental component of fire hazard testing protocols used across electrotechnical industries to evaluate fire risks posed by electrical components and products. Its purpose is to guide the setup, operation, and confirmation of a standardized test flame, thereby supporting consistent, reliable, and reproducible fire testing results globally.

This standard serves as a basic safety publication intended to be used by technical committees in the development of other standards following IEC Guide 104 and ISO/IEC Guide 51. It is designed to ensure that test flames used for fire hazard assessments have a confirmed heat output of 1 kW, aiding in uniform fire safety testing across electrotechnical product manufacturing.

Key Topics

• Test Flame Apparatus
  IEC 60695-11-2 outlines detailed apparatus requirements for producing a 1 kW nominal pre-mixed propane/air flame, including burner design, fuel supply, and control mechanisms.

• Confirmatory Test Procedures
  The standard provides a systematic approach to confirming the flame output power through repeatable testing techniques. It specifies the frequency and procedural steps necessary to verify that the test flame maintains the correct thermal output during fire hazard assessments.

• Burner Setup and Supply Arrangement
  Technical requirements for burner construction and gas supply configurations are clearly specified to align with fire testing consistency, with updated technical changes included in this second edition.

• Measurement and Control Systems
  Guidance covers instrumentation such as thermocouples, flow controllers, temperature sensors, and recording devices necessary for accurate flame heat output measurement and monitoring.

• Use Guidance and Safety Considerations
  IEC 60695-11-2 emphasizes the importance of controlled laboratory conditions like fume hoods or chambers and safety practices due to the inherent hazards in handling propane gas and open flames.

Applications

This standard is widely applied in various fire hazard testing scenarios where a consistent and reproducible heat source is required for ignitability and fire propagation evaluation. Typical applications include:

• Assessment of Electrical Components
  Used by manufacturers and testing laboratories to evaluate the ignition risk of components under a defined thermal stress.

• Safety Standard Development
  Technical committees utilize the 1 kW pre-mixed flame as a benchmark when developing or revising standards related to fire safety performance.

• Product Design and Certification
  Helps product developers design safer electrical equipment by providing reliable fire hazard testing tools supporting certification and compliance.

• Research and Development
  Supports academic and industrial research into fire behavior and material flammability, contributing to innovation in fire-resistant materials and safety solutions.

Related Standards

IEC 60695-11-2:2013 is part of the broader IEC 60695 series focused on fire hazard testing, which includes:

• IEC 60695-11-3: Test flames – 500 W flames – apparatus and confirmational methods
• IEC 60695-11-4: Test flames – 50 W flames – apparatus and confirmational test method
• IEC 60695-11-5: Needle-flame test method and associated apparatus
• IEC 60695-11-40: Guidance on confirmatory tests for test flames

Additionally, it references fundamental standards for instrumentation and safety such as:

• IEC 60584-1 and IEC 60584-2: Thermocouples and applicable tolerances for temperature measurement
• ISO 13943: Fire safety vocabulary and definitions relevant to combustion and fire testing

Keywords

Fire hazard testing, IEC 60695-11-2, 1 kW test flame, propane/air pre-mixed flame, fire safety standards, test flame apparatus, confirmatory test procedure, burner setup, electrical component fire risk, electrotechnical safety standards, fire ignition testing.

---

IEC 60695-11-2:2013 is a vital standard providing a validated method for generating a nominal 1 kW test flame that enables precise and internationally harmonized fire hazard testing across electrical and electronic product sectors, playing a crucial role in enhancing product safety and minimizing fire risks.

Standards Content (Sample)

IEC 60695-11-2 ®
Edition 2.0 2013-12
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Fire hazard testing –
Part 11-2: Test flames – 1 kW nominal pre-mixed flame – Apparatus,
confirmatory test arrangement and guidance

Essais relatifs aux risques du feu –
Partie 11-2: Flammes d'essai – Flamme à prémélange de 1 kW nominal –
Appareillage, disposition d'essai de vérification et indications

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IEC 60695-11-2 ®
Edition 2.0 2013-12
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Fire hazard testing –
Part 11-2: Test flames – 1 kW nominal pre-mixed flame – Apparatus,

confirmatory test arrangement and guidance

Essais relatifs aux risques du feu –

Partie 11-2: Flammes d'essai – Flamme à prémélange de 1 kW nominal –

Appareillage, disposition d'essai de vérification et indications

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX S
ICS 13.220.40 ISBN 978-2-8322-1285-1

– 2 – 60695-11-2 © IEC:2013
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Burner/supply arrangement. 7
4.1 Requirements . 7
4.2 Apparatus and fuel . 7
4.2.1 Burner . 7
4.2.2 Flow control . 7
4.2.3 Copper block . 8
4.2.4 Thermocouple . 8
4.2.5 Temperature/time indicating/recording devices . 8
4.2.6 Laboratory fumehood/chamber . 8
5 Production of the test flame . 8
6 Confirmation of the test flame . 9
6.1 Principle . 9
6.2 Frequency of confirmatory tests . 9
6.3 Procedure . 9
7 Recommended arrangements for use of the test flame . 10
Annex A (normative) Burner construction . 12
Annex B (informative) Examples of test arrangements . 19
Bibliography . 20

Figure 1 – Flame dimensions . 11
Figure A.1 – General assembly . 12
Figure A.2 – Pre-mixed burner details . 13
Figure A.3 – Pre-mixed burner details . 14
Figure A.4 – Pre-mixed burner details . 15
Figure A.5 – Pre-mixed burner details . 16
Figure A.6 – Example of supply arrangement for burner . 17
Figure A.7 – Copper block . 17
Figure A.8 – Confirmatory test arrangement . 18
Figure B.1 – Examples of test arrangements . 19

60695-11-2 © IEC:2013 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FIRE HAZARD TESTING –
Part 11-2: Test flames – 1 kW nominal pre-mixed flame –
Apparatus, confirmatory test arrangement and 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
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2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
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3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
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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 60695-11-2 has been prepared by IEC technical committee 89:
Fire hazard testing.
The text of this standard is based on the following documents:
FDIS Report on voting
89/1193/FDIS 89/1204/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.This
second edition of IEC 60695-11-2 cancels and replaces the first edition published in 2003. It
constitutes a technical revision.

– 4 – 60695-11-2 © IEC:2013
It has the status of a basic safety publication in accordance with IEC Guide 104 and
ISO/IEC Guide 51.
This edition includes the following significant technical changes with respect to the previous
edition:
– editorial changes to align with other TC 89 test flame publications;
– editorially updated throughout;
– technical changes to the burner set up requirements – see 4.1, 4.2.2, 5 and Fig. A.6;
– technical changes to the test flame confirmation procedure – see 6.2 and 6.3.
A list of all the parts in the IEC 60695 series, under the general title Fire hazard testing, can
be found on the IEC web site.
Part 11 consists of the following parts:
Part 11-2: Test flames – 1 kW nominal pre-mixed flame – Apparatus, confirmatory test
arrangement and guidance
Part 11-3: Test flames – 500 W flames – Apparatus and confirmational test methods
Part 11-4: Test flames – 50 W flame – Apparatus and confirmational test method
Part 11-5: Test flames – Needle-flame test method – Apparatus, confirmatory test
arrangement and guidance
Part 11-10: Test flames – 50 W horizontal and vertical flame test methods
Part 11-11: Test flames – Determination of the characteristic heat flux for ignition from a
non-contacting flame source
Part 11-20: Test flames – 500 W flame test methods
Part 11-30: Test flames – History and development from 1979 to 1999
Part 11-40: Test flames – Confirmatory tests – Guidance
The committee has decided that the contents of this publication will remain unchanged until
the stability 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.
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.
60695-11-2 © IEC:2013 – 5 –
INTRODUCTION
In the design of any 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 product design, as well as the choice of materials, is to reduce to acceptable levels the
potential risks of fire during normal operating conditions, reasonable foreseeable abnormal
use, malfunction, and/or failure. IEC Technical Committee 89 has developed IEC 60695-1-10,
together with its companion, IEC 60695-1-11, to provide guidance on how this is to be
accomplished.
The primary aims of IEC 60695-1-10 and IEC 60695-1-11 are to provide guidance on how:
a) to prevent ignition caused by an electrically energized component part, and
b) to confine any resulting fire within the bounds of the enclosure of the electrotechnical
product in the event of ignition.
Secondary aims of these documents include the minimization of any flame spread beyond the
product’s enclosure and the minimization of harmful effects of fire effluents such as heat,
smoke, toxicity and/or corrosivity.
Fires involving electrotechnical products can also be initiated from external non-electrical
sources. Considerations of this nature should be dealt with in the overall fire risk assessment.
IEC 60695-11-2 provides a description of the apparatus required to produce a 1 kW test
flame, and provides a description of the principle of a confirmation procedure to check that
the effective power output of the flame is as intended. Guidance on confirmatory tests for test
flames is given in IEC/TS 60695-11-40.
This international standard may involve hazardous materials, operations, and equipment. It
does not purport to address all of the safety problems associated with its use. It is the
responsibility of the user of this international standard to establish appropriate safety and
health practices and determine the applicability of regulatory limitations prior to use.

– 6 – 60695-11-2 © IEC:2013
FIRE HAZARD TESTING –
Part 11-2: Test flames – 1 kW nominal pre-mixed flame –
Apparatus, confirmatory test arrangement and guidance

1 Scope
This part of IEC 60695 gives the requirements for the production and confirmation of a
nominal 1 kW, propane/air pre-mixed test flame.
This basic safety publication is 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.
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.
2 Normative references
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.
IEC 60584-1:1995, Thermocouples – Part 1: Reference tables
IEC 60584-2:1982, Thermocouples – Part 2: Tolerances
Amendment 1:1989
ISO 13943:2008, Fire safety – Vocabulary
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO/IEC 13943:2008,
some of which are reproduced below for the user’s convenience, as well as the following
apply.
3.1
combustion
exothermic reaction of a substance with an oxidizing agent
Note 1 to entry: Combustion generally emits fire effluent accompanied by flames and/or glowing.
[SOURCE: ISO/IEC 13943:2008, definition 4.46]
3.2
draught-free environment
space in which the results of experiments are not significantly affected by the local air speed

60695-11-2 © IEC:2013 – 7 –
Note 1 to entry: A qualitative example is a space in which a wax candle flame remains essentially undisturbed.
Quantitative examples are small-scale fire tests in which a maximum air speed of 0,1 m × s-1 or 0,2 m × s-1
sometimes specified.
[SOURCE: ISO/IEC 13943:2008, definition 4.70]
3.3
flame, noun
rapid, self-sustaining, sub-sonic propagation of combustion in a gaseous medium, usually with
emission of light
[SOURCE: ISO/IEC 13943:2008, definition 4.133]
3.4
pre-mixed flame
flame in which combustion occurs in an intimate mixture of fuel and oxidizing agent
[SOURCE: ISO/IEC 13943:2008, definition 4.259]
3.5
standardized 1 kW test flame
test flame conforming to this international standard and meeting all of the requirements given
in Clauses 4 to 6
4 Burner/supply arrangement
4.1 Requirements
A standardized 1 kW test flame, according to this method, is one that is produced
– using hardware according to Figures A.1 to A.8,
– supplied with propane gas of purity not less than 95 %,
– supplied with air essentially free of oil and water.
The flame shall be symmetrical, stable and give a result of 46 s ± 6 s in the confirmatory test
described in Clause 6.
The confirmatory test arrangement shown in Figure A.8 shall be used.
4.2 Apparatus and fuel
4.2.1 Burner
The burner shall be in accordance with Figures A.1 to A.5 inclusive.
NOTE The gas injector and flame stabilizer are removable for cleaning purposes.
4.2.2 Flow control
Flow controllers shall be used and shall be capable of:
– the measurement and control of a propane gas flow rate of about 650 cm /min at 23 °C
and 0,1 MPa, with an accuracy of ± 2 %,
– the measurement and control of an air flow rate of about 10 dm /min at 23 °C and
0,1 MPa, with an accuracy of ± 2 %.
NOTE Mass flow controllers will probably have to be used in order to meet the requirements of Clause 5.

– 8 – 60695-11-2 © IEC:2013
4.2.3 Copper block
A copper block 9 mm in diameter, with a mass of 10,00 g ± 0,05 g in the fully machined but
undrilled state, as described in Figure A.7, shall be made from electrolytic tough pitch copper
Cu-ETP USN C11000 [1] .
4.2.4 Thermocouple
A class 1, in accordance with IEC 60584-1, mineral-insulated, metal-sheathed fine-wire
thermocouple with an insulated junction, shall be used for measuring the temperature of the
copper block. It shall have an overall nominal diameter of 0,5 mm and wires of, for example,
NiCr and NiAl (type K), in accordance with IEC 60584-1, with the welded point located inside
the sheath. The sheath shall consist of a metal resistant to continuous operation at a
temperature of at least 1 050 °C. Thermocouple tolerances shall be in accordance with
IEC 60584-2, class 1.
NOTE A sheath made from a nickel-based, heat resistant alloy (such as Inconel 600 ) will satisfy the above
requirements.
The preferred method of fastening the thermocouple to the copper block is by first ensuring
that the thermocouple is inserted to the full depth of the hole and then by compressing the
copper around the thermocouple as shown in Figure A.8.
4.2.5 Temperature/time indicating/recording devices
The temperature/time indicating/recording devices shall be appropriate for the measurement
of the time for the copper block to heat up from 100 °C ± 5 °C to 700 °C ± 3 °C with a
tolerance on the measured time of ± 0,5 s.
4.2.6 Laboratory fumehood/chamber
The laboratory fume hood/chamber shall have an inside volume of at least 1,0 m . The
chamber shall provide a draught-free environment, whilst allowing normal thermal circulation
of air around the test specimen. The chamber shall permit observation of tests in progress.
Unless otherwise stated in the relevant specification, the inside surfaces of the chamber shall
be of a dark colour and when a lux meter, facing towards the rear of the chamber, is
positioned in place of the test specimen, the recorded light level shall be less than 20 lx.
For safety and convenience, it is desirable that this enclosure (which can be completely
closed) is fitted with an extraction device, such as an exhaust fan, to remove products of
combustion which may be toxic. If fitted, the extraction device shall be turned off during the
test and turned on immediately after the test to remove the fire effluents. A positive closing
damper may be needed.
NOTE 1 The amount of oxygen available to support combustion of the test specimen is important for the conduct
of this flame test. For tests conducted by this method when burning times are prolonged, chambers having an
inside volume of 1,0 m may not be sufficient to produce accurate results.
NOTE 2 Placing a mirror in the chamber, to provide a rear view of the test specimen, has been found to be useful.
5 Production of the test flame
Set up the burner supply arrangement according to Figure A.6 ensuring leak-free connections
and place the burner in the laboratory fume hood/chamber.
___________
Figures in square brackets refer to the bibliography.
Inconel is the trademark of a product supplied by Special Metals Corporation. This information is given for the
convenience of users of this document and does not constitute an endorsement by the IEC of the product
named. Equivalent products may be used if they can be shown to lead to the same results.

60695-11-2 © IEC:2013 – 9 –
Ignite the gas and adjust the gas and air flow rates to the following values.
3 3
The volume flow rate of propane gas shall be equivalent to 650 cm /min ± 10 cm /min when
measured at 23 °C and 0,1 MPa.
3 3
The volume flow rate of air shall be equivalent to 10,0 dm /min ± 0,3 dm /min when measured
at 23 °C and 0,1 MPa.
NOTE These volume flow rates correspond to mass flow rates of 1,184 g/min ± 0,018 g/min for propane gas
), and 11,64 g/min ± 0,35 g/min for air (density at 23 °C and 0,1 MPa
(density at 23 °C and 0,1 MPa = 1,821 g/dm
= 1,1764 g/dm ).
The flame shall appear stable and symmetrical on examination.
6 Confirmation of the test flame
6.1 Principle
The time for the temperature of the copper block, described in Figure A.6, to increase from
100 °C ± 5 °C to 700 °C ± 3 °C shall be 46 s ± 6 s when the flame test arrangement of
Figure A.8 is used.
6.2 Frequency of confirmatory tests
The confirmatory test shall be done:
a) when the gas supply is changed, or test equipment is replaced, or when data are
questioned;
and either
b) before use of the test flame if the period between use exceeds one month;
or
c) at least once a month if the period between use is less than or equal to one month.
6.3 Procedure
Set up the burner supply and confirmatory test arrangement according to Figure A.8 in the
laboratory fume hood/chamber, ensuring leak-free gas connections.
Temporarily remove the burner away from the copper block to ensure there is no influence of
the flame on the copper block during the preliminary adjustment of gas and air flow rates.
Ignite the gas and adjust the gas and air flow rates to the values specified in Clause 5.
Ensure that the flame is symmetrical. The approximate dimensions of the flame (see
Figure 1), when measured in the laboratory fume hood/chamber and viewed in subdued light,
are as follows:
– blue cone height: 46 mm to 78 mm;
– overall flame height: 148 mm to 208 mm.
Wait for a period of at least 5 min to allow the burner conditions to reach equilibrium.
With the temperature/time indicating/recording devices operational, re-position the burner
under the copper block.
Determine the time for the temperature of the block to increase from 100 °C ± 5 °C to
700 °C ± 3 °C. If the time is 46 s ± 6 s, record the gas and air flow rates and repeat the
procedure two additional times until three successive determinations are each 46 s ± 6 s.

– 10 – 60695-11-2 © IEC:2013
Allow the block to cool naturally in air to below 50 °C between determinations. If the time of
any determination is not 46 s ± 6 s, then all parts of the apparatus should be checked to
ensure that they are in accordance with this international standard.
NOTE At temperatures above 700 °C, the thermocouple can easily be damaged; therefore it is advisable to
remove the burner immediately after reaching 700 °C.
If the copper block has not been used before, make a preliminary run to condition the copper
block surface. Discard the result.
7 Recommended arrangements for use of the test flame
Examples of appropriate test arrangements are given in Annex B (see Figure B.1).
When used for testing equipment, unless otherwise stated in the relevant specification, the
recommended distance from the top of the burner tube to the point on the surface of the test
specimen to be tested is approximately 100 mm and the burner shall be fixed in position
during the test.
NOTE The distance of 100 mm was chosen to give better reproducibility than the position where the tip of the
blue cone is in contact with the test specimen.
When used for testing strips of materials, where the operator may move the flame during the
test to follow the distorting or burning test specimen, the tip of the blue cone should be as
close as possible without touching the test specimen.
The burner shall be tilted in such a way that debris falling from the test specimen under test
does not fall into the burner.

60695-11-2 © IEC:2013 – 11 –
IEC  2934/13
Key
1 Overall flame height (148 mm to 208 mm)
2 Blue cone height (46 mm to 78 mm)
Figure 1 – Flame dimensions
– 12 – 60695-11-2 © IEC:2013
Annex A
(normative)
Burner construction
Burner construction is demonstrated in Figures A.1 to A.8.
IEC  007/2000
Key
1 Burner barrel Parts 1, 2, 3, 4, and 5 are hard soldered on assembly.
2, 3 Air manifold Parts 7 and 8 may be hard soldered together, if necessary, to prevent gas
leakage.
4 Air supply tube
Parts 8 and 9 may be fabricated in one piece, or otherwise fastened together, to
5, 6 Flame stabilizer
prevent gas leakage.
7 Gas supply tube
Parts 1, 2, 3, 5 and 6 are detailed in Figure A.2.
8 Elbow block
Parts 8 and 9 are detailed in Figure A.3.
9 Burner base
Parts 7 and 10 are detailed in Figure A.4.
10 Gas jet
Part 4 is detailed in Figure A.5.
Figure A.1 – General assembly
60695-11-2 © IEC:2013 – 13 –
Dimensions in millimetres
Tolerances ± 0,1 unless otherwise stated
∅
Outer radius 4,0
∅ 12
Inner radius 2,5
∅
∅ 7 ± 0,05
∅ 17
Drill 6 holes ∅ 1,5
∅ 22 × 1 pitch
∅ 25
∅ 27
∅ 30
Detail 2 Detail 6
∅ 22 × 1 pitch
∅ 30
∅ 25
Drill 3 holes ∅ 6
∅ 17
∅ 15
∅ 17
Detail
Detail 5
1 ∅ ×
Detail 14 1 pitch
∅ 17
IEC  008/2000
Material: brass
Figure A.2 – Pre-mixed burner details
1 ∅ 10
– 14 – 60695-11-2 © IEC:2013
Dimensions in millimetres
Tolerances ± 0,1 unless otherwise stated
∅ 14 × 1 pitch
∅ 5 × 0,8 pitch
14 RCD
Drill/tap three holes
∅ 20
∅ 2,5 H 0,45 pitch
Detail
Detail 8
∅ 80
∅ 20
IEC  009/2000
NOTE The shape of part 9 is given as an example.
Material: brass or any other suitable material.
Figure A.3 – Pre-mixed burner details
∅ 2,5
∅
∅ 10 × 1 pitch
60695-11-2 © IEC:2013 – 15 –
Dimensions in millimetres
Tolerances ± 0,1, ± 30’ (angular) unless otherwise stated
∅ ×
10 1 pitch
∅
∅
∅ 0,53-0,56
(drill ∅ 0,52)
35°
∅ ×
5 0,8 pitch
Detail 10
Detail 7
Gas injector
IEC  1997/03
Material: brass
Figure A.4 – Pre-mixed burner details
– 16 – 60695-11-2 © IEC:2013
Dimensions in millimetres
Tolerances ± 0,1, ± 30’ (angular) unless otherwise stated
∅ 12
∅ 10
∅
45°
∅ 8
Detail 4
IEC  011/2000
Material: brass
Figure A.5 – Pre-mixed burner details
∅ 1,65
2 3 3
60695-11-2 © IEC:2013 – 17 –
Compressed
air supply
Gas supply
Air flow control
and measurement
Gas flow control
and measurement
IEC  2935/13
Figure A.6 – Example of supply arrangement for burner

Dimensions in millimetres
Tolerances ± 0,1, ± 30’ (angular) unless otherwise stated

∅ 9 ± 0,01
∅ 0,5
45°± 0,5°
IEC  2936/13
The copper block shall be polished on all external surfaces.
Material: electrolytic copper Cu-ETP USN C11000 [1]
Mass: 10,00 g ± 0,05 g before drilling
Figure A.7 – Copper block
6 ± 0,02
16,14 ± 0,02
3 ± 0,01
– 18 – 60695-11-2 © IEC:2013
Dimensions in millimetres
IEC  2937/13
Key
1 Suspension point
2 Temperature indicating/recording device(s) and
Time indicating/recording device(s)
3 After first ensuring that the thermocouple is inserted to the full depth of the hole,
the copper is compressed around the thermocouple to retain it without damage.
The mode of suspension of the copper block shall be such that the block remains essentially stationary during the
test.
Figure A.8 – Confirmatory test arrangement
75 min.
95 ± 1
60695-11-2 © IEC:2013 – 19 –
Annex B
(informative)
Examples of test arrangements
Examples of appropriate test arrangements are demonstrated in Figure B.1.
Approximate dimensions are in millimetres

Key IEC  2938/13
1 Blue cone
Figure B.1 – Examples of test arrangements
45°
45°
– 20 – 60695-11-2 © IEC:2013
Bibliography
[1] ISO 1337:1980, Wrought coppers (having minimum copper contents of 99,85 %) –
Chemical composition and forms of wrought products
NOTE This publication was withdrawn without replacement in 2000-03 by ISO/TC 26) The replacement
call out for electrolytic tough pitch copper is: Cu-ETP USN C11000.
[2] IEC 60695-1-10, Fire hazard testing – Part 1-10: Guidance for assessing the fire
hazard of electrotechnical products – General guidelines
[3] IEC 60695-1-11, Fire hazard testing – Part 1-11: Guidance for assessing the fire
hazard of electrotechnical products – Fire hazard assessment
[4] IEC/TS 60695-11-40, Fire hazard testing – Part 11-40: Test flames – Confirmatory
tests – Guidance
[5] IEC Guide 104:2010, The preparation of safety publications and the use of basic safety
publications and group safety publications
[6] ISO/IEC Guide 51:1999, Safety aspects – Guidelines for their inclusion in standards

____________
– 22 – 60695-11-2 © CEI:2013
SOMMAIRE
AVANT-PROPOS . 23
INTRODUCTION . 26
1 Domaine d’application . 27
2 Références normatives . 27
3 Termes et définitions . 27
4 Montage d’alimentation du brûleur . 28
4.1 Exigences . 28
4.2 Appareillage et combustible . 28
4.2.1 Brûleur . 28
4.2.2 Régulateurs de débits . 28
4.2.3 Bloc de cuivre . 29
4.2.4 Thermocouple . 29
4.2.5 Dispositifs d'indication ou et d'enregistrement de température
et de temps. 29
4.2.6 Hotte de laboratoire . 29
5 Production de la flamme d'essai . 30
6 Confirmation de la flamme d'essai . 30
6.1 Principe . 30
6.2 Fréquence d’essais de confirmation . 30
6.3 Procédure . 30
7 Dispositions préconisées pour l'utilisation de la flamme d'essai . 31
Annexe A (normative) Montage du brûleur . 33
Annexe B (informative) Exemples de dispositions d’essai . 40
Bibliographie . 41

Figure 1 – Dimensions de la flamme . 32
Figure A.1 – Montage général . 33
Figure A.2 – Détails du brûleur de type à prémélange . 34
Figure A.3 – Détails du brûleur à prémélange . 35
Figure A.4 – Détails du brûleur à prémélange . 36
Figure A.5 – Détails du brûleur à prémélange . 37
Figure A.6 – Montage d'alimentation du brûleur . 38
Figure A.7 – Bloc de cuivre . 38
Figure A.8 – Disposition de l'essai de vérification . 39
Figure B.1 – Exemples de dispositions d’essai . 40

60695-11-2 © CEI:2013 – 23 –
COMMISSION ÉLECTROTECHNIQUE INTERNATIONALE
____________
ESSAIS RELATIFS AUX RISQUES DU FEU –

Partie 11-2: Flammes d'essai – Flamme à prémélange de 1 kW nominal –
Appareillage, disposition d'essai de vérification et indications

AVANT-PROPOS
1) La Commission Electrotechnique Internationale (CEI) est une organisation mondiale de normalisation
composée de l'ensemble des comités électrotechniques nationaux (Comités nationaux de la CEI). La CEI a
pour objet de favoriser la coopération internationale pour toutes les questions de normalisation dans les
domaines de l'électricité et de l'électronique. A cet effet, la CEI – entre autres activités – publie des Normes
internationales, des Spécifications techniques, des Rapports techniques, des Spécifications accessibles au
public (PAS) et des Guides (ci-après dénommés "Publication(s) de la CEI"). Leur élaboration est confiée à des
comités d'études, aux travaux desquels tout Comité national intéressé par le sujet traité peut participer. Les
organisations internationales, gouvernementales et non gouvernementales, en liaison avec la CEI, participent
également aux travaux. La CEI collabore étroitement avec l'Organisation Internationale de Normalisation (ISO),
selon des conditions fixées par accord entre les deux organisations.
2) Les décisions ou accords officiels de la CEI concernant les questions techniques représentent, dans la mesure
du possible, un accord international sur les sujets étudiés, étant donné que les Comités nationaux de la CEI
intéressés sont représentés dans chaque comité d’études.
3) Les Publications de la CEI se présentent sous la forme de recommandations internationales et sont agréées
comme telles par les Comités nationaux de la CEI. Tous les efforts raisonnables sont entrepris afin que la CEI
s'assure de l'exactitude du contenu technique de ses publications; la CEI ne peut pas être tenue responsable
de l'éventuelle mauvaise utilisation ou interprétation qui en est faite par un quelconque utilisateur final.
4) Dans le but d'encourager l'uniformité internationale, les Comités nationaux de la CEI s'engagent, dans toute la
mesure possible, à appliquer de façon transparente les Publications de la CEI dans leurs publications
nationales et régionales. Toutes divergences entre toutes Publications de la CEI et toutes publications
nationales ou régionales correspondantes doivent être indiquées en termes clairs dans ces dernières.
5) La CEI elle-même ne fournit aucune attestation de conformité. Des organismes de certification indépendants
fournissent des services d'évaluation de conformité et, dans certains secteurs, accèdent aux marques de
conformité de la CEI. La CEI n'est responsable d'aucun des services effectués par les organismes de
certification indépendants.
6) Tous les utilisateurs doivent s'assurer qu'ils sont en possession de la dernière édition de cette publication.
7) Aucune responsabilité ne doit être imputée à la CEI, à ses administrateurs, employés, auxiliaires ou
mandataires, y compris ses experts particuliers et les membres de ses comités d'études et des Comités
nationaux de la CEI, pour tout préjudice causé en cas de dommages corporels et matériels, ou de tout autre
dommage de quelque nature que ce soit, directe ou indirecte, ou pour supporter les coûts (y compris les frais
de justice) et les dépenses découlant de la publication ou de l'utilisation de cette Publication de la CEI ou de
toute autre Publication de la CEI, ou au crédit qui lui est accordé.
8) L'attention est attirée sur les références normatives citées dans cette publication. L'utilisation de publications
référencées est obligatoire pour une application correcte de la présente publication.
9) L’attention est attirée sur le fait que certains des éléments de la présente Publication de la CEI peuvent faire
l’objet de droits de brevet. La CEI ne saurait être tenue pour responsable de ne pas avoir identifié de tels droits
de brevets et de ne pas avoir signalé leur existence.
La Norme internationale CEI 60695-11-2 a été établie par le comité d’études 89 de la CEI:
Essais relatifs aux risques du feu.
Le texte de cette norme est issu des documents suivants:
FDIS Rapport de vote
89/1193/FDIS 89/1204/RVD
Le rapport de vote indiqué dans le tableau ci-dessus donne toute information sur le vote ayant
abouti à l'approbation de cette norme.

– 24 – 60695-11-2 © CEI:2013
Cette publication a été rédigée selon les Directives ISO/CEI, Partie 2.
Cette deuxième édition de la CEI 60695-11-2 annule et remplace la première édition publiée
en 2003. Elle constitue une révision technique.
Cette norme a le statut d’une publication fondamentale de sécurité conformément au
Guide CEI 104 et au Guide ISO/CEI 51.
Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition
précédente:
– modifications rédactionnelles pour correspondre à d’autres publications sur la flamme
d’essai du TC 89;
– actualisation rédactionnelle de l’ensemble du texte;
– modifications techniques apportées aux exigences de montage du brûleur – voir 4.1,
4.2.2, 5 et Fig. A.6;
– modifications techniques apportées à la procédure de confirmation de la flamme d’essai –
voir 6.2 et 6.3.
Une liste de toutes les parties de la série CEI 60695, regroupées sous le titre général Essais
relatifs aux risques du feu, peut être consultée sur le site web de la CEI.
La Partie 11 comprend les parties suivantes:
Partie 11-2: Flammes d’essai – Flamme à prémélange de 1 kW nominal – Appareillage,
disposition d’essai de vérification et ind
...