IEC 60695-11-2:2026

IEC 60695-11-2 ®
Edition 4.0 2026-11
INTERNATIONAL
STANDARD
REDLINE VERSION
BASIC SAFETY PUBLICATION
HORIZONTAL PUBLICATION
Fire hazard testing -
Part 11-2: Test flames - 1 kW nominal pre-mixed flame - Apparatus, confirmatory
test arrangement and guidance
ICS 13.220.40 ISBN 978-2-8327-1617-5
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CONTENTS
FOREWORD . 2
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 fume hood/chamber . 8
5 Production of the test flame . 8
5.1 Selection of the method . 8
5.2 Method A . 9
5.3 Method B (alternative) . 9
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 . 11
Annex A (normative) Burner details, arrangements and confirmatory test . 12
A.1 Burner construction . 12
A.2 Gas supply arrangement . 18
A.3 The copper block . 19
A.4 Confirmatory test . 20
Bibliography . 22

Figure 1 – Flame dimensions . 10
Figure A.1 – General assembly .
Figure A.1 – General Please move it back to the original position. . 14
Figure A.2 – Burner details (1) . 15
Figure A.3 – Burner details (2) . 16
Figure A.4 – Burner details (3) . 17
Figure A.5 – Burner details (4) . 18
Figure A.6 – Example of supply arrangement for burner . 19
Figure A.7 – Copper block . 20
Figure A.8 – Confirmatory test arrangement . 21

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 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 -
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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
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6) All users should ensure that they have the latest edition of this publication.
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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) IEC draws attention to the possibility that the implementation of this document may involve the use of (a) patent(s). IEC tak es
no position concerning the evidence, validity or applicability of any claimed patent rights in respect thereof. As of the dat e of
publication of this document, IEC had not received notice of (a) patent(s), which may be required to implement this document.
However, implementers are cautioned that this may not represent the latest information, which may be obtained from the patent
database available at https://patents.iec.ch. IEC shall not be held responsible for identifying any or all such patent rights.
This redline version of the official IEC Standard allows the user to identify the changes made to the previous
edition IEC 60695-11-2:2017. A vertical bar appears in the margin wherever a change has been made.
Additions are in green text, deletions are in strikethrough red text.

IEC 60695-11-2 has been prepared by IEC technical committee 89: Fire hazard testing. It is an International
Standard.
This fourth edition cancels and replaces the third edition published in 2017. This edition constitutes a
technical revision.
This document has been given the status of a horizontal document in accordance with the ISO/IEC
Directives, Part 1. It has the status of a basic safety publication in accordance with IEC GUIDE 104 [1] and
ISO/IEC Guide 51 [2].
This edition includes the following significant technical changes with respect to the previous edition:
a) correction of errors in notes of Subclauses 5.2 and 5.3.
The text of this International Standard is based on the following documents:
Draft Report on voting
89/1675/FDIS 89/1686/RVD
Full information on the voting for its approval can be found in the report on voting indicated in the above
table.
The language used for the development of this International Standard is English.
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in accordance
with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available at
www.iec.ch/members_experts/refdocs. The main document types developed by IEC are described in
greater detail at www.iec.ch/publications.
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.
IEC 60695-11 consists of the following parts:
– IEC 60695-11-2 [3], Test flames – 1 kW nominal pre-mixed flame – Apparatus, confirmatory test
arrangement and guidance
– IEC 60695-11-3 [4], Test flames – 500 W flames – Apparatus and confirmational test methods
– IEC 60695-11-4 [5], Test flames – 50 W flame – Apparatus and confirmational test method
– IEC 60695-11-5 [6], Test flames – Needle-flame test method – Apparatus, confirmatory test arrangement
and guidance
– IEC 60695-11-10 [7], Test flames – 50 W horizontal and vertical flame test methods
– IEC 60695-11-11 [8], Test flames – Determination of the characteristic heat flux for ignition from a non-
contacting flame source
– IEC 60695-11-20 [9], Test flames – 500 W flame test methods
– IEC TS 60695-11-21 [10], Test flames - 500 W vertical flame test method for tubular polymeric materials
– IEC TR 60695-11-30 [11], Test flames – History and development from 1979 to 1999
– IEC TR 60695-11-40 [12], Test flames – Confirmatory tests – Guidance
The committee has decided that the contents of this document will remain unchanged until the stability date
indicated on the IEC website under webstore.iec.ch in the data related to the specific document. At this
date, the document will be
– reconfirmed,
– withdrawn, or
– revised.
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, reasonably foreseeable abnormal use, malfunction, and/or failure. The IEC has developed IEC
60695-1-10 [13], together with its companion, IEC 60695-1-11 [14], to provide guidance on how this is to
be accomplished.
The primary aims of IEC 60695-1-10 [13] and IEC 60695-1-11 [14] 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.
This document 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 TR 60695-11-40 [12].
This part of IEC 60695 may can 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
document to establish appropriate safety and health practices and deter mine the applicability of regulatory
limitations prior to use.
1 Scope
This part of IEC 60695 gives the requirements for the production and confirmation of a nominal 1 kW
propane/air pre-mixed flame for use in fire hazard testing.
This basic safety publication focusing on safety test method(s) is primarily intended for use by technical
committees in the preparation of standards safety publications in accordance with the principles laid down
in IEC GUIDE 104 [1] and ISO/IEC Guide 51 [2].
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 document has the status of a horizontal publication in accordance with IEC Guide 108 0.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes
requirements 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.
IEC 60584-1, Thermocouples - Part 1: EMF specifications and tolerances
IEC 60695-4:2021, Fire hazard testing - Part 4: Terminology concerning fire tests for electrotechnical
products
ISO/IEC 13943:20082017, 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 IEC 60695-4:2021and ISO
13943:2017 apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
– IEC Electropedia: available at https://www.electropedia.org/
– ISO Online browsing platform: available at https://www.iso.org/obp
3.1
combustion
exothermic reaction of a substance with an oxidizing agent
Note 1 to entry: Combustion (3.1) generally emits fire effluent accompanied by flames (3.3) and/or glowing.
[SOURCE: ISO 13943:2008, definition 4.462017, 3.55]
3.2
draught-free environment
space in which the results of experiments are not significantly affected by the local air speed
Note 1 to entry: A qualitative example is a space in which a wax candle flame (3.3) remains essentially undisturbed. Quantitative
−1 −1
examples are small-scale fire tests in which a maximum air speed of 0,1 𝑚 × 𝑠 or 0,2 𝑚 × 𝑠 is sometimes specified.
[SOURCE: ISO 13943:2008, definition 4.702017 , 3.83]
3.3
flame
rapid, self-sustaining, sub-sonic propagation of combustion (3.1) in a gaseous medium, usually with
emission of light
[SOURCE: ISO 13943:2008, definition 4.1332017, 3.159]
3.4
pre-mixed flame
flame (3.3) in which combustion (3.1) occurs in an intimate mixture of fuel and oxidizing agent
[SOURCE: ISO 13943:2008, definition 4.2592017, 3.307]
3.5
standardized 1 kW test flame
test flame (3.3) conforming to this international standard and meeting all of the requirements given in
Clauses 4 to 6 all the requirements of this document
4 Burner/supply arrangement
4.1 Requirements
A standardized 1 kW test flame, according to this document, is one that is produced
– using hardware according to Figure A.1 to Figure A.8,
– supplied with propane gas of purity not less than 95 %,
– supplied with air essentially free of oil and water.
The flame test flame shall be symmetrical, stable and give a result of 46 s ± 6 s in the confirmatory test
described in Clause 6.
The copper block shown in Figure A.7 and 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 Figure A.1 to Figure 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 0,65 dm /min at 23ºC and 0,1 MPa,
with an adequate accuracy to measure within the tolerance specified in the relevant test method (see
Clause 5),
– the measurement and control of an air flow rate of about 10 dm /min at 23 °C and 0,1 MPa, with an
adequate accuracy to measure within the tolerance specified in the relevant test method (see Clause
5).
NOTE Mass flow controllers have been found to be suitable to meet the requirements of Clause 5.
4.2.3 Copper block
A copper block 9 mm in diameter and having 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 UNS
C11000.
NOTE The minimum copper and silver content of electrolytic tough pitch copper Cu -ETP UNS C11000 is 99,90%.
4.2.4 Thermocouple
A 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 -1, 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 fume hood/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. 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, this enclosure (which can be completely closed) should be fitted with an
extraction device, such as an exhaust fan, to remove products of combustion which could be toxic. If fitted,
the extraction device shall be turned off during the test and turned on immediately after the test each
specimen tested 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, it is possible that chambers having an inside volume
of 1,0 m may not be sufficient are insufficient 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
5.1 Selection of the method
Unless otherwise specified in the relevant standard, method A shall be used.
___________
This information is given for the convenience of users of this international standard 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.
5.2 Method A
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.
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 0,65 dm /min ± 0,01 dm /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 (density at 23 °C and
3 3
0,1 MPa = 1,821 g/dm ), and 11,64 11,764 g/min ± 0,350 g/min for air (density at 23 °C and 0,1 MPa = 1,1764 g/dm ).
The flame test flame shall appear stable and symmetrical on examination.
5.3 Method B (alternative)
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.
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 0,65 dm /min ± 0,03 dm /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 ± 0,5 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 ± 0,054 g/min for propane gas (density at 23 °C and
0,1 MPa = 1,821 g/dm³), and 11,64 11,764 g/min ± 0,580 g/min for air (density at 23 °C and 0,1 MPa = 1,1 764 g/dm³).
The flame shall appear stable and symmetrical on examination (see Clause 6 regarding the flame test).
6 Confirmation of the test flame
6.1 Principle
The time for the temperature of the copper block, described in Figure A.6 Figure A.7, 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, reposition 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 consecutive determinations are each 46 s ± 6 s. 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.
Key
1 Overall flame height (148 mm to 208 mm)
2 Blue cone height (46 mm to 78 mm)

Figure 1 – Flame dimensions
7 Recommended arrangements for use of the test flame
When used for testing equipment, unless otherwise stated in the relevant standard, 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 test 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 does not fall into the
burner.
Annex A
(normative)
Burner details, arrangements and confirmatory test
A.1 Burner construction
Figure A.1 through Figure A.8 Figure A.5 illustrate the burner assembly.

IEC
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.
Parts 8 and 9 may be fabricated in one piece, or otherwise fastened together, to
4 Air supply tube
prevent gas leakage.
5, 6 Flame stabilizer Parts 1, 2, 3, 5 and 6 are detailed in Figure A.2.
7 Gas supply tube Parts 8 and 9 are detailed in Figure A.3.
8 Elbow block Parts 7 and 10 are detailed in Figure A.4.
9 Burner base Part 4 is detailed in Figure A.5.
10 Gas jet
Figure A.1 – General assembly
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 prevent gas
leakage.
5,6 Flame stabilizer Parts 1, 2, 3, 5 and 6 are detailed in Figure A.2.
7 Gas supply tube Parts 8 and 9 are detailed in Figure A.3.
8 Elbow block Parts 7 and 10 are detailed in Figure A.4.
9 Burner base Part 4 is detailed in Figure A.5.

Figure A.1 – General Please move it back to the original position.

Dimensions in millimetres
NOTE Tolerances ± 0,1 unless otherwise stated
Material: brass
Figure A.2 – Burner details (1)
Dimensions in millimetres
NOTE Tolerances ± 0,1 unless otherwise stated
NOTE The shape of part detail 9 is given as an example.
Material: brass or any other suitable material.
Figure A.3 – Burner details (2)
Dimensions in millimetres
ø10  1 pitch
ø6
ø7
ø0,53-0,56
(drill ø0,52)
35°
ø5  0,8 pitch
Detail 10
Gas injector
Detail 7
IEC
NOTE Tolerances ± 0,1, ± 30’ (angular) unless otherwise stated
Material: brass
Figure A.4 – Burner details (3)
Dimensions in millimetres
NOTE Tolerances ± 0,1, ± 30’ (angular) unless otherwise stated
Material: brass
Figure A.5 – Burner details (4)
A.2 Gas supply arrangement
Figure A.6 illustrates the gas supply arrangement to the burner.
Key
1 Compressed air supply
2 Air flow control and measurement
3 Gas flow control and measurement
4 Gas supply
Figure A.6 – Example of supply arrangement for burner
A.3 The copper block
Figure A.7 gives the dimensions of the copper block.

Dimensions in millimetres
NOTE Tolerances ± 0,1, ± 30’ (angular) unless otherwise stated
The copper block shall be polished on all external surfaces.
Material: electrolytic copper Cu-ETP USN UNS C11000
Mass: 10,00 g ± 0,05 g before drilling
Figure A.7 – Copper block
A.4 Confirmatory test
Figure A.8 shows the arrangement of the apparatus for a confirmatory test.
Dimensions in millimetres
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.
NOTE The mode of suspension of the copper block shall be is such that the block remains essentially stationary during the test.
Figure A.8 – Confirmatory test arrangement
Bibliography
[1] IEC GUIDE 104, The preparation of safety publications and the use of basic safety publications and
group safety publications
[2] ISO/IEC Guide 51, Safety aspects - Guidelines for their inclusion in standards
[3] IEC GUIDE 108, Guidelines for ensuring the coherence of IEC publications – Horizontal functions,
horizontal publications and their application
[4] IEC 60695-11-2, Fire hazard testing - Part 11-2: Test flames - 1 kW pre-mixed flame - Apparatus,
confirmatory test arrangement and guidance
[5] IEC 60695-11-3, Fire hazard testing - Part 11-3: Test flames - 500 W flames - Apparatus and
confirmational test methods
[6] IEC 60695-11-4, Fire hazard testing - Part 11-4: Test flames - 50 W flame - Apparatus and
confirmational test method
[8] IEC 60695-11-5, Fire hazard testing - Part 11-5: Test flames - Needle-flame test method - Apparatus,
confirmatory test arrangement and guidance
[8] IEC 60695-11-10, Fire hazard testing - Part 11-10: Test flames - 50 W horizontal and vertical flame
test methods
[9] IEC 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
[10] IEC 60695-11-20, Fire hazard testing - Part 11-20: Test flames - 500 W flame test method
[11] IEC TS 60695-11-21, Fire hazard testing - Part 11-21: Test flames - 500 W vertical flame test method
for tubular polymeric materials
[12] IEC TR 60695-11-30, Fire hazard testing - Part 11-30: Test flames - History and development from
1979 to 1999
[13] IEC TSTR 60695-11-40, Fire hazard testing - Part 11-40: Test flames - Confirmatory tests - Guidance
[14] IEC 60695-1-10, Fire hazard testing – Part 1-10: Guidance for assessing the fire hazard of
electrotechnical products – General guidelines
[15] IEC 60695-1-11, Fire hazard testing – Part 1-11: Guidance for assessing the fire hazard of
electrotechnical products – Fire hazard assessment
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 [6].

___________
IEC 60695-11-2 ®
Edition 4.0 2026-11
INTERNATIONAL
STANDARD
BASIC SAFETY PUBLICATION
HORIZONTAL PUBLICATION
Fire hazard testing -
Part 11-2: Test flames - 1 kW pre-mixed flame - Apparatus, confirmatory test
arrangement and guidance
ICS 13.220.40  ISBN 978-2-8327-1573-4

CONTENTS
FOREWORD . 2
INTRODUCTION . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Burner/supply arrangement . 6
4.1 Requirements . 6
4.2 Apparatus and fuel . 6
4.2.1 Burner . 6
4.2.2 Flow control . 6
4.2.3 Copper block . 6
4.2.4 Thermocouple . 7
4.2.5 Temperature/time indicating/recording devices . 7
4.2.6 Laboratory fume hood/chamber . 7
5 Production of the test flame . 7
5.1 Selection of the method . 7
5.2 Method A . 7
5.3 Method B (alternative) . 8
6 Confirmation of the test flame . 8
6.1 Principle . 8
6.2 Frequency of confirmatory tests . 8
6.3 Procedure . 8
7 Recommended arrangements for use of the test flame . 10
Annex A (normative) Burner details, arrangements and confirmatory test . 11
A.1 Burner construction . 11
A.2 Gas supply arrangement . 16
A.3 The copper block . 17
A.4 Confirmatory test . 18
Bibliography . 19

Figure 1 – Flame dimensions . 9
Figure A.1 – General Please move it back to the original position. . 11
Figure A.2 – Burner details (1) . 12
Figure A.3 – Burner details (2) . 13
Figure A.4 – Burner details (3) . 14
Figure A.5 – Burner details (4) . 15
Figure A.6 – Example of supply arrangement for burner . 16
Figure A.7 – Copper block . 17
Figure A.8 – Confirmatory test arrangement . 18

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
Fire hazard testing -
Part 11-2: Test flames - 1 kW 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 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.
...

IEC 60695-11-2 ®
Edition 4.0 2026-11
NORME
INTERNATIONALE
PUBLICATION FONDAMENTALE DE SÉCURITÉ

PUBLICATION HORIZONTALE
Essais relatifs aux risques du feu -
Partie 11-2: Flammes d'essai - Flamme à prémélange de 1 kW - Appareillage,
configuration pour l'essai de vérification et recommandations
ICS 13.220.40 ISBN 978-2-8327-1573-4

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SOMMAIRE
AVANT-PROPOS . 2
INTRODUCTION . 4
1 Domaine d'application. 5
2 Références normatives . 5
3 Termes et définitions . 5
4 Configuration d'alimentation/du brûleur . 6
4.1 Exigences . 6
4.2 Appareillage et combustible . 6
4.2.1 Brûleur . 6
4.2.2 Régulation de débit . 7
4.2.3 Bloc de cuivre . 7
4.2.4 Couple thermoélectrique . 7
4.2.5 Dispositifs d'indication et/ou d'enregistrement de température et de temps . 7
4.2.6 Hotte de laboratoire . 7
5 Production de la flamme d'essai . 8
5.1 Sélection de la méthode . 8
5.2 Méthode A . 8
5.3 Méthode B (variante) . 8
6 Vérification de la flamme d'essai . 9
6.1 Principe . 9
6.2 Fréquence des essais de vérification . 9
6.3 Procédure . 9
7 Configurations recommandées pour l'utilisation de la flamme d'essai. 10
Annex A (normative) Détails du brûleur, configurations et essai de vérification . 11
A.1 Montage du brûleur . 11
A.2 Configuration de l'alimentation en gaz . 16
A.3 Le bloc de cuivre . 17
A.4 Essai de vérification . 18
Bibliographie . 19

Figure 1 – Dimensions de la flamme . 10
Figure A.1 – Montage général . 11
Figure A.2 - Détails du brûleur (1) . 12
Figure A.3 - Détails du brûleur (2) . 13
Figure A.4 - Détails du brûleur (3) . 14
Figure A.5 - Détails du brûleur (4) . 15
Figure A.6 – Exemple de configuration d'alimentation du brûleur . 16
Figure A.7 – Bloc de cuivre . 17
Figure A.8 – Configuration pour l'essai de vérification . 18

COMMISSION ÉLECTROTECHNIQUE INTERNATIONALE
____________
Essais relatifs aux risques du feu -
Partie 11-2: Flammes d'essai - Flamme à prémélange de 1 kW - Appareillage,
configuration pour l'essai de vérification et recommandations

AVANT-PROPOS
1) La Commission Électrotechnique Internationale (IEC) est une organisation mondiale de normalisation composée de l'ensemble
des comités électrotechniques nationaux (Comités nationaux de l'IEC). L'IEC a pour objet de favoriser la coopération
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L'IEC 60695-11-2 a été établie par le comité d'études 89 de l'IEC: Essais relatifs aux risques du feu. Il s'agit
d'une Norme internationale.
Cette quatrième édition annule et remplace la troisième édition parue en 2017. Cette édition constitue une
révision technique.
Cette publication a le statut de publication horizontale conformément aux Directives ISO/IEC, Partie 1. Elle
a le statut d'une publication fondamentale de sécurité conformément au Guide IEC 104 [1] et au Guide
ISO/IEC 51 [2].
Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
a) correction d'erreurs dans les notes des 5.2 et 5.3.
Le texte de cette Norme internationale est issu des documents suivants:
Projet Rapport de vote
89/1675/FDIS 89/1686/RVD
Le rapport de vote indiqué dans le tableau ci-dessus donne toute information sur le vote ayant abouti à son
approbation.
La langue employée pour l'élaboration de cette Norme internationale est l'anglais.
Ce document a été rédigé selon les Directives ISO/IEC, Partie 2, il a été développé selon les Directives
ISO/IEC, Partie 1 et les Directives ISO/IEC, Supplément IEC, disponibles sous
www.iec.ch/members_experts/refdocs. Les principaux types de documents développés par l'IEC sont
décrits plus en détail sous www.iec.ch/publications.
Une liste de toutes les parties de la série IEC 60695, publiées sous le titre général Essais relatifs aux
risques du feu, se trouve sur le site web de l'IEC.
L'IEC 60695-11 comprend les parties suivantes:
– IEC 60695-11-2 [3], Flammes d'essai - Flamme à prémélange de 1 kW nominal - Appareillage,
configuration pour l'essai de vérification et recommandations
– IEC 60695-11-3 [4], Flammes d'essai - Flamme de 500 W - Appareillage et méthodes d'essai de
vérification
– IEC 60695-11-4 [5], Flammes d'essai - Flamme de 50 W - Appareillage et méthodes d'essai de
vérification
– IEC 60695-11-5 [6], Flammes d'essai - Méthode d'essai au brûleur-aiguille - Appareillage, dispositif
d'essai de vérification et lignes directrices
– IEC 60695-11-10 [7], Flammes d'essai - Méthodes d'essai horizontale et verticale à la flamme de 50 W
– IEC 60695-11-11 [8], Flammes d'essai - Détermination du flux de chaleur caractéristique pour
l'allumage à partir d'une flamme source sans contact
– IEC 60695-11-20 [9], Flammes d'essai - Méthodes d'essai à la flamme de 500 W
– IEC TS 60695-11-21 [10], Flammes d'essai - Méthodes d'essai à la flamme verticale de 500 W pour
matériaux tubulaires polymères
– IEC TR 60695-11-30 [11], Flammes d'essai - Historique et développement de 1979 à 1999
– IEC TS 60695-11-40 [12], Test flames - Confirmatory tests - Guidance
Le comité a décidé que le contenu de ce document ne sera pas modifié avant la date de stabilité indiquée
sur le site web de l'IEC sous webstore.iec.ch dans les données relatives au document recherché. À cette
date, le document sera
– reconduit,
– supprimé, ou
– révisé.
INTRODUCTION
Il est nécessaire de prendre en considération le risque d'incendie et les dangers potentiels associés au feu
dans la conception de tout produit électrotechnique. À cet égard, la conception des composants, des circuits
et des produits ainsi que le choix des matériaux ont pour objectif de réduire à des niveaux acceptables les
risques potentiels d'incendie dans les conditions de fonctionnement normal, d'utilisation anormale
raisonnablement prévisible, de dysfonctionnement et/ou de défaillance. L'IEC a établi l'IEC 60695-1-
10 [13], avec sa norme associée, l'IEC 60695-1-11 [14], afin de fournir des recommandations sur les
méthodes de réalisation correspondantes.
L'IEC 60695-1-10 [13] et l'IEC 60695-1-11 [14] ont pour principaux objectifs de fournir des
recommandations sur les éléments suivants:
a) éviter l'allumage provoqué par un composant alimenté électriquement, et
b) limiter la propagation du feu à l'enveloppe du produit électrotechnique lui-même en cas d'allumage.
Les objectifs secondaires de ces documents comprennent la limitation de toute propagation de la flamme
au-delà de l'enveloppe du produit et la réduction le plus possible des effets préjudiciables des effluents du
feu tels que la chaleur, la fumée et les produits de combustion toxiques ou corrosifs.
Les feux impliquant des produits électrotechniques peuvent également être déclenchés par des sources
externes non électriques. Il convient de tenir compte de ces éléments dans le cadre de l 'évaluation globale
des risques d'incendie.
Le présent document fournit une description de l'appareillage exigé pour produire une flamme d'essai de
1 kW, et une description du principe d'une procédure de confirmation pour vérifier que la flamme produite
satisfait aux exigences. Des recommandations relatives aux essais de vérification des flammes d 'essai sont
données dans l'IEC TR 60695-11-40 [12].
La présente partie de l'IEC 60695 peut impliquer des matériaux, opérations et matériels dangereux. Elle
n'a pas pour objet de traiter tous les problèmes de sécurité associés à son utilisation. Il incombe à
l'utilisateur de la présente norme internationale d'établir des bonnes pratiques appropriées en ce qui
concerne la sécurité et la santé et de déterminer l'applicabilité des limitations réglementaires avant usage.
1 Domaine d'application
La présente partie de l'IEC 60695 spécifie les exigences pour la production et la validation d'une flamme
de type à prémélange à base de propane/air de 1 kW nominal pour utilisation dans les essais relatifs aux
risques du feu.
La présente publication fondamentale de sécurité portant sur les méthodes d'essai de sécurité est
essentiellement destinée à être utilisée par les comités d'études dans le cadre de l'élaboration de
publications de sécurité conformément aux principes établis dans le Guide IEC 104 [1] et le Guide
ISO/IEC 51 [2].
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 ou les conditions d'essai de la présente publication fondamentale de sécurité
s'appliquent seulement si elles servent spécifiquement de référence ou sont intégrées dans les publications
correspondantes.
Ce document a le statut d'une publication horizontale conformément au Guide 108 de l'IEC [3].
2 Références normatives
Les documents suivants sont cités dans le texte de sorte qu'ils constituent, pour tout ou partie de leur
contenu, des exigences du présent document. Pour les références datées, seule l'édition citée s'applique.
Pour le
...