IEC 60335-2-24:2010/AMD2:2017

IEC 60335-2-24 ®
Edition 7.0 2017-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
A MENDMENT 2
AM ENDEMENT 2
Household and similar electrical appliances – Safety –
Part 2-24: Particular requirements for refrigerating appliances, ice-cream
appliances and ice-makers
Appareils électrodomestiques et analogues – Sécurité –
Partie 2-24: Règles particulières pour les appareils de réfrigération, les
sorbetières et les fabriques de glace

IEC 60335-2-24:2010-02/AMD2:2017-04(en-fr)

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IEC 60335-2-24 ®
Edition 7.0 2017-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
A MENDMENT 2
AM ENDEMENT 2
Household and similar electrical appliances – Safety –

Part 2-24: Particular requirements for refrigerating appliances, ice-cream

appliances and ice-makers
Appareils électrodomestiques et analogues – Sécurité –

Partie 2-24: Règles particulières pour les appareils de réfrigération, les

sorbetières et les fabriques de glace

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 97.040.30 ISBN 978-2-8322-4159-2

ISH1:2018  IEC 2018
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
IEC 60335-2-24 Amendment 2 to
Edition 7.0  2017-04
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES – SAFETY –

Part 2-24: Particular requirements for refrigerating appliances,
ice-cream appliances and ice makers

INTERPRETATION SHEET 1
This interpretation sheet has been prepared by subcommittee 61C: Safety of refrigeration
appliances for household and commercial use, of technical committee 61: Safety of household
and similar electrical appliances.
The text of this interpretation sheet is based on the following documents:
FDIS Report on voting
61C/730/FDIS 61C/734/RVD
Full information on the voting for the approval of this interpretation sheet can be found in the
report on voting indicated in the above table.

___________
SC 61C interpretation sheet on: Subclause 30.2.101 with respect to testing of built-in
appliances and interpretation of accessible non-metallic material
Questions: Some questions have arisen over the text added to 30.2 and 30.2.101 via AMD2
concerning non-metallic material on the external rear surfaces of an appliance that is in direct
contact with thermal insulation. These are:
a) Is the non-metallic material on the external rear surfaces of an appliance that is in direct
contact with thermal insulation considered to be “accessible non-metallic material” ?
b) Does the term “accessible” have the meaning defined in 3.6.3 of Part 1 ?
c) What force is applied to test probe B when judging accessibility ?
d) For built-in appliances, is accessibility judged before the appliance is built-in ?
ICS 97.040.30
IEC 60335-2-24:2010-02/AMD2:2017-04/ISH1:2018-04(en)

– 2 – IEC 60335-2-24:2010/AMD2:2017/
ISH1:2018  IEC 2018
Relevant text from IEC 60335-2-24 AMD2
The addition to 30.2 states:
For accessible thermal insulation and non-metallic material on the external rear surfaces of an
appliance having an area exceeding 75 cm that is in direct contact with the thermal
insulation, compliance is checked by the test of 30.2.101.
Subclause 30.2.101 states:
30.2.101 Accessible thermal insulation and non-metallic material on the external rear
surfaces of an appliance that is in direct contact with thermal insulation
− is subject to the needle-flame test (NFT) of Annex E; or
− shall comprise material classified as V-0 or V-1 according to IEC 60695-11-10 provided
that the test sample used for the classification was no thicker than the relevant part of the
appliance.
Non-metallic material
− that is within 150 mm from the top surface of the appliance;
− that is on the left side or right side of the motor-compressor compartment;
− that has an area not exceeding 75 cm that is in direct contact with the thermal insulation
is not tested.
ANSWERS
a) Yes
b) Yes
c) The test probe is applied with a force not exceeding 1 N
d) Yes. This is irrespective of the last paragraph of 5.10 of Part 1

ISH2:2020  IEC 2020
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
IEC 60335-2-24
Edition 7.0  2010-02
Amendment 2: 2017-04
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
SAFETY –
Part 2-24: Particular requirements for refrigerating appliances,
ice-cream appliances and ice makers

INTERPRETATION SHEET 2
This interpretation sheet has been prepared by subcommittee 61C: Safety of refrigeration
appliances for household and commercial use, of technical committee 61: Safety of household
and similar electrical appliances.
The text of this interpretation sheet is based on the following documents:
DISH Report on voting
61C/839/DISH 61C/853/RVDISH
Full information on the voting for the approval of this interpretation sheet can be found in the
report on voting indicated in the above table.

___________
SC 61C interpretation sheet on: Subclause 30.2 of IEC 60335-2-24:2010/AMD2:2017
Subclause 30.2 states:
"Add the following to the addition:
For accessible thermal insulation and non-metallic material on the external rear surfaces of an
appliance having an area exceeding 75 cm that is in direct contact with the thermal
insulation, compliance is checked by the test of 30.2.101."
ICS 97.040.30
IEC 60335-2-24:2010-02/AMD2:2017-04/ISH2:2020-03(en-fr)

– 2 – IEC 60335-2-24:2010/AMD2:2017/
ISH2:2020  IEC 2020
Question 1: Has this subclause to be interpreted as:
"Add the following to the addition:
For accessible thermal insulation and non-metallic material on the external rear surfaces of an
appliance having a total area exceeding 75 cm that is in direct contact with the thermal
insulation, compliance is checked by the test of 30.2.101."
Subclause 30.2.101, final bullet point states:
• "that has an area not exceeding 75 cm that is in direct contact with the thermal
insulation is not tested. "
Question 2: Has this bullet point to be interpreted as:
• "that has a total area not exceeding 75 cm that is in direct contact with the thermal
insulation is not tested. "
Answers:
Question 1 –
From Subclause 30.2 addition, the following materials shall be tested:
1) Accessible thermal insulation
2) Non-metallic material on the rear surface of the appliance having an area exceeding
that is in direct contact with the thermal insulation
75 cm
Small holes (< 3 mm ) in the outer case were not intended to be considered as “accessible
thermal insulation”. These small < 3 mm holes are much smaller than the test probe B, so
therefore the thermal insulation of 3 mm holes is automatically not considered as accessible
thermal insulation without additional evaluation.
When testing accessible thermal insulation, the test is intended to be performed by applying
the flame to the accessible thermal insulation on the end product.
Question 2 – See question 1.
– 2 – IEC 60335-2-24:2010/AMD2:2017
© IEC 2017
FOREWORD
This amendment has been prepared by sub-committee 61C: Safety of refrigeration appliances
for household and commercial use, of IEC technical committee 61: Safety of household and
similar electrical appliances.
The text of this amendment is based on the following documents:
FDIS Report on voting
61C/694/FDIS 61C/700/RVD
Full information on the voting for the approval of this amendment can be found in the report
on voting indicated in the above table.
The committee has decided that the contents of this amendment and the base publication will
remain unchanged until the stability date indicated on the IEC website 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.
NOTE The attention of National Committees is drawn to the fact that equipment manufacturers and testing
organizations may need a transitional period following publication of a new, amended or revised IEC publication in
which to make products in accordance with the new requirements and to equip themselves for conducting new or
revised tests.
It is the recommendation of the committee that the content of this publication be adopted for implementation
nationally not earlier than 12 months or later than 36 months from the date of publication.
The contents of the interpretation sheet 1 of April 2018 and interpretation sheet 2 of March
2020 have been included in this copy.
_____________
2 Normative references
Delete references IEC 60079-4A and IEC/TR 60079-20 from the existing list.
Add the following new reference:
IEC 60079-20-1, Explosive atmospheres – Part 20-1: Material characteristics for gas and
vapour classification – Test methods and data
Replace the reference to ISO 817 by the following new reference:
ISO 817, Refrigerants – Designation and safety classification
Replace the reference to ISO 5149 by the following new reference:
ISO 5149-1, Refrigerating systems and heat pumps – Safety and environmental requirements
– Part 1: Definitions, classification and selection criteria

© IEC 2017
3 Terms and definitions
3.109 Replace the term definition by the following:
refrigerant with a flammability classification of A2L, A2 or A3 in accordance with ISO 817
5 General conditions for the tests
5.3 Replace the last paragraph of the addition by the following:
The tests of 15.101.1, 15.101.2, 15.103 and 15.104 are carried out immediately after the test
of 15.2.
7 Marking and instructions
7.1 In the first paragraph, third dashed item, delete “only”.
In the first paragraph, fifth dashed item, add “or its service agent” after “manufacturer”.
In the eleventh paragraph, replace “the symbol “Caution: risk of fire” with “the symbol
ISO 7010 W021”.
7.6 In the note, replace “the symbol “Caution: risk of fire” with “the symbol ISO 7010 W021”.
7.12 Add the following:
If symbol ISO 7010 W021 is used, its meaning shall be explained.
The instructions for refrigerating appliances and ice-makers shall include the substance of
the following:
WARNING: When positioning the appliance, ensure the supply cord is not trapped or
damaged.
WARNING: Do not locate multiple portable socket-outlets or portable power supplies at the
rear of the appliance.
7.14 In the first paragraph, replace “the symbol “Caution: risk of fire” with “the symbol
ISO 7010 W021”.
7.15 In the second paragraph, replace “the symbol “Caution: risk of fire” with “the symbol
ISO 7010 W021”.
15 Moisture resistance
Replace Subclauses 15.101, 15.102 and 15.103 by the following:
15.101 Appliances subject to spillage of liquid from containers onto the inside walls of the
cabinet or compartment shall be constructed so that such spillage does not affect their
electrical insulation.
Compliance is checked by the relevant tests of 15.101.1 and 15.101.2 using the spillage
solution specified in 15.2.
– 4 – IEC 60335-2-24:2010/AMD2:2017
© IEC 2017
15.101.1 The apparatus shown in Figure 101 is filled with the spillage solution to the level of
the lip, and the displacement block is supported just above the solution by means of any
suitable release mechanism and bridge support.
All shelves and containers which can be removed without the use of a tool are removed and
the appliance is disconnected from the supply. Lamp covers are not removed.
The apparatus is supported with its base horizontal and so positioned and at such a height
that when the release mechanism is operated, the solution is discharged over the back and
side interior walls of the cabinet or compartment including any electrical components mounted
thereon, in the most unfavourable manner. The test is made only once with the apparatus in
any one position, but the test may be repeated as many times as necessary in different
positions, provided that there is no residual solution on parts wetted by a previous test.
Immediately after the test, the appliance shall withstand the electric strength test of 16.3 and
inspection shall show that there is no trace of the solution on insulation which could result in a
reduction of clearances and creepage distances below the values specified in Clause 29.
Furthermore, if the inspection shows that the solution is in contact with the defrost heating
element or its insulation, then the complete heating element shall withstand the test of
22.102.
15.101.2 A rectangular container having dimensions of 200 mm x 110 mm and a height of
50 mm is filled with 0,5 l of the spillage solution.
The container is positioned, with its longest side parallel to the wall to be tested, on the
highest shelf on which it will fit, the shelf shall have a clearance to the ceiling of the
compartment of at least 130 mm. All other shelves and containers which can be removed
without the use of a tool are removed. Lamp covers are not removed.
The appliance is disconnected from the supply and the solution in the vessel is discharged
over the back and side interior walls of the cabinet or compartment including any electrical
components mounted thereon, in the most unfavourable manner within a period of 2 s. The
test is made only once with the container in any one position, but the test may be repeated as
many times as necessary in different positions, provided that there is no residual solution on
parts wetted by a previous test.
Immediately after the test, the appliance shall withstand the electric strength test of 16.3 and
inspection shall show that there is no trace of the solution on insulation which could result in a
reduction of clearances and creepage distances below the values specified in Clause 29.
Furthermore, if the inspection shows that the solution is in contact with the defrost heating
element or its insulation, then the complete heating element shall withstand the test of
22.102.
15.102 Appliances subject to spillage of liquid onto the top of the cabinet shall be
constructed so that such spillage does not affect their electrical insulation.
Compliance is checked by the relevant tests of 15.103 and 15.104. The spillage solution
specified in 15.2 is used for the test of 15.103.
15.103 Appliances, other than built-in appliances, ice-makers and ice-cream appliances
are tilted at an angle of up to 2° in relation to the position of normal use in the direction which
is likely to be the most unfavourable for this test. One half-litre of the spillage solution is
poured uniformly over the top of the appliance in approximately 60 s at the most unfavourable
place from a height of approximately 50 mm with the controls in the on position and the
appliance disconnected from the supply.

© IEC 2017
Immediately after the test, the appliance shall withstand the electric strength test of 16.3 and
inspection shall show that there is no trace of the solution on insulation which could result in a
reduction of clearances and creepage distances below the values specified in Clause 29.
20 Stability and mechanical hazards
20.101 In the last paragraph of the test specification, replace “tip” by “tilt by more than 2°
from the horizontal position”.
Delete Note 2 and replace “NOTE 1” by “NOTE”.
20.104 Replace the second paragraph by the following:
Each sliding drawer accessible without opening a door is loaded with a uniformly distributed
load/unit storage volume of the compartments of 0,5 kg/l.
21 Mechanical strength
Add the following new subclause:
21.1 Addition:
For accessible glass panels, the impact energy is 1,00 J ± 0,05 J.
22 Construction
22.109 Add the following to the end of fourth paragraph of the test specification:
"using a capillary tube having a diameter of 0,7 mm ± 0,05 mm."
Add the following before the existing penultimate paragraph of the test specification:
If the electrical component under consideration is situated within a separate enclosure and if
the refrigerant can stagnate within that enclosure, then the direction of refrigerant injection
shall be from the pipework joint under consideration towards any opening (such as ventilation
slots or cable entry ducts) in the separate enclosure.
22.110 In the requirement, replace “ignition” by “auto-ignition”.
Replace Table 102 by the following:

– 6 – IEC 60335-2-24:2010/AMD2:2017
© IEC 2017
Table 102 – Refrigerant flammability parameters
Refrigerant number Refrigerant name Refrigerant Refrigerant auto- Refrigerant lower
b, c, d,
formula ignition temperature explosive limit
a, c e,
°C % V/V
R-50 Methane CH 600 4,4
R-290 Propane CH CH CH 450 1,7
3 2 3
R-600 n-Butane CH CH CH CH 372 1,4
3 2 2 3
R-600a Isobutane (CH ) CHCH 460 1,3
3 2 3
a
Values for other flammable refrigerants can be obtained from IEC 60079-20-1 and ISO 5149-1.
b
Values for other flammable refrigerants can be obtained from IEC 60079-20-1 and ISO 817.
c
IEC 60079-20-1 is the reference standard. ISO 5149-1 and ISO 817 may be used if the required data is not
contained in IEC 60079-20-1.
d
Concentration of refrigerant in dry air.
e
In some standards, the term “flammability limit” is used for “explosive limit”.

22.116 Replace the existing text by the following:
Accessible glass panels with an area having any two orthogonal dimensions exceeding
75 mm shall be made from
• glass that breaks into small pieces when it fractures; or
• glass that is not released or dropped from its normal position when broken.
This requirement does not apply to accessible glass panels with an area having any two
orthogonal dimensions exceeding 75 mm inside the appliance made from glass that has
enhanced mechanical strength.
a) For glass that breaks into small pieces when it fractures, compliance is checked by the
following test which is performed on two samples.
Frames or other parts attached to the glass panel to be tested are removed and the glass
is placed on a rigid horizontal flat surface.
NOTE 1 The edges of the sample to be tested are contained within a frame of adhesive tape in such a
manner that the broken pieces remain in place after breakage but without hindering expansion of the sample.
The sample under test is broken by means of a test punch having a head with a mass of
75 g ± 5 g and a conical tungsten carbide tip with an angle of 60° ± 2°. The punch shall be
positioned approximately 13 mm in from the longest edge of the glass at the midpoint of
that edge. The punch is then hit by a hammer so that the glass breaks.
A transparent mask of 50 mm × 50 mm is placed on the fractured glass except within a
peripheral margin of 25 mm from the edge of the sample.
The assessment shall be undertaken on at least two areas of the sample, and the areas
chosen shall contain the largest particles.
The number of crack free particles within the mask is counted and for each assessment
shall not be less than 40. The particle count shall be made within 5 minutes of the
fracture. Each particle wholly contained within the area of the mask shall be counted as
one particle and each particle that is partially within the mask shall be counted as a half
particle.
NOTE 2 In the case of curved glass, plane
...