Household and similar electrical appliances - Safety - Part 2-108: Particular requirements for electrolysers

Deals with the safety of electrolysers that produce low viscosity, ionized liquids intended for use as detergent free wash water in appliances for household and similar purposes and which conform with the standards applicable to such appliances. It applies to electrolysers tested separately, under the most severe conditions that may be expected to occur in normal use, their rated voltage being not more than 250 V. 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 standard be adopted for implementation nationally not earlier than 12 months from the date of its publication.

Appareils électrodomestiques et analogues - Sécurité - Partie 2-108: Règles particulières pour les électrolyseurs

Traite de la sécurité des électrolyseurs qui produisent des liquides ionisés à faible viscosité destinés à être utilisés comme eau de lavage sans détergent dans les appareils à usages domestiques et analogues et qui sont conformes aux normes applicables à de tels appareils. Elle s'applique aux électrolyseurs essayés séparément, dans les conditions les plus sévères qui peuvent se produire en usage normal, et dont la tension assignée n'est pas supérieure à 250 V. L'attention des Comités Nationaux est attirée sur le fait que les fabricants d'appareils et les organismes d'essai peuvent avoir besoin d'une période transitoire après la publication d'une nouvelle publication CEI, ou d'une publication amendée ou révisée, pour fabriquer des produits conformes aux nouvelles exigences et pour adapter leurs équipements aux nouveaux essais ou aux essais révisés. Le comité recommande que le contenu de la présente norme soit entériné au niveau national au plus tôt 12 mois après sa date de publication.

General Information

Status
Published
Publication Date
10-Jan-2008
Current Stage
DELPUB - Deleted Publication
Start Date
22-Mar-2024
Completion Date
23-Jun-2023

Relations

Effective Date
05-Sep-2023

Overview

IEC 60335-2-108:2008 is an international standard published by the International Electrotechnical Commission (IEC) that focuses on the safety requirements for electrolysers used in household and similar electrical appliances. These electrolysers produce low viscosity, ionized liquids designed as detergent-free wash water, commonly integrated into household appliances. The standard applies to electrolysers with a rated voltage not exceeding 250 V and outlines safety protocols under the most severe expected usage conditions.

As a particular requirements standard, IEC 60335-2-108 supplements and modifies the general safety requirements found in IEC 60335-1, ensuring a tailored approach to the unique hazards posed by electrolysers. It serves manufacturers, testing organizations, and national committees by providing a framework for safe product design, testing, and certification.

Key Topics

  • Scope and Application
    Focuses on the safety of electrolysers used separately or integrated into household appliances, with special attention to performance under severe conditions at rated voltages up to 250 V.

  • Safety Considerations
    Addresses electrical, mechanical, thermal, fire, radiation, and other hazards to protect users during normal and abnormal appliance operation.

  • Test Procedures and Conditions
    Defines general testing methodologies to verify safety features including leakage current, electric strength, overheating, moisture resistance, transient overvoltages, and mechanical hazards.

  • Construction and Components
    Sets requirements for materials, insulation, wiring, and protective devices to ensure durability and safe electrical operation throughout the lifecycle of the electrolyser.

  • Marking and Instructions
    Requires clear marking for proper identification and instructions to guide safe installation, operation, and maintenance of electrolysers.

  • Compatibility and Integration
    Ensures that electrolysers comply with relevant wiring rules, including IEC 60364, and can be safely integrated with other appliance functions under corresponding part 2 standards.

  • Elastomeric Parts Aging
    Includes annexed guidelines for aging tests of elastomeric parts, crucial for maintaining the integrity and safety of seals and gaskets over time.

  • Transitional and National Implementation Guidelines
    Recommends a minimum 12-month transition period for manufacturers and testing bodies to implement the standard following its publication.

Applications

  • Household Appliances
    Electrolysers designed following IEC 60335-2-108 can be safely used in washing machines, dishwashers, and other household appliances that utilize ionized or detergent-free wash water.

  • Commercial Equipment
    Related commercial cleaning devices or similar appliances benefit from adherence to these safety requirements, helping reduce chemical use and environmental impact.

  • Product Safety Certification
    Helps manufacturers and certification labs ensure compliance with international safety benchmarks for electrolysers, facilitating global market access and consumer trust.

  • Research and Development
    Engineers and product designers use this standard to develop new electrolyser technologies that meet robust safety and performance criteria.

Related Standards

  • IEC 60335-1
    General safety requirements for household and similar electrical appliances that provide the foundational safety principles complemented by IEC 60335-2-108.

  • IEC 60364
    International wiring rules referenced to ensure compatibility of appliances with supply mains electrical installations.

  • ISO 1817
    Standard related to aging tests for elastomeric materials, referenced for testing components used in electrolysers.

  • Additional IEC 60335 Part 2 Standards
    Other part 2 standards may apply if the appliance incorporates additional electrical functions beyond electrolysis.


By adhering to IEC 60335-2-108:2008, manufacturers and stakeholders enhance the safety, reliability, and acceptance of electrolysers in household and similar appliances. This contributes to improved consumer protection and supports innovations in sustainable, detergent-free cleaning technologies.

Standard

IEC 60335-2-108:2008 - Household and similar electrical appliances - Safety - Part 2-108: Particular requirements for electrolysers

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Frequently Asked Questions

IEC 60335-2-108:2008 is a standard published by the International Electrotechnical Commission (IEC). Its full title is "Household and similar electrical appliances - Safety - Part 2-108: Particular requirements for electrolysers". This standard covers: Deals with the safety of electrolysers that produce low viscosity, ionized liquids intended for use as detergent free wash water in appliances for household and similar purposes and which conform with the standards applicable to such appliances. It applies to electrolysers tested separately, under the most severe conditions that may be expected to occur in normal use, their rated voltage being not more than 250 V. 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 standard be adopted for implementation nationally not earlier than 12 months from the date of its publication.

Deals with the safety of electrolysers that produce low viscosity, ionized liquids intended for use as detergent free wash water in appliances for household and similar purposes and which conform with the standards applicable to such appliances. It applies to electrolysers tested separately, under the most severe conditions that may be expected to occur in normal use, their rated voltage being not more than 250 V. 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 standard be adopted for implementation nationally not earlier than 12 months from the date of its publication.

IEC 60335-2-108:2008 is classified under the following ICS (International Classification for Standards) categories: 13.120 - Domestic safety; 97.060 - Laundry appliances. The ICS classification helps identify the subject area and facilitates finding related standards.

IEC 60335-2-108:2008 has the following relationships with other standards: It is inter standard links to IEC 60335-2-108:2024. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.

You can purchase IEC 60335-2-108:2008 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of IEC standards.

Standards Content (Sample)


IEC 60335-2-108
Edition 1.0 2008-01
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Household and similar electrical appliances – Safety –
Part 2-108: Particular requirements for electrolysers

Appareils électrodomestiques et analogues – Sécurité –
Partie 2-108: Règles particulières pour les électrolyseurs

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IEC 60335-2-108
Edition 1.0 2008-01
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Household and similar electrical appliances – Safety –
Part 2-108: Particular requirements for electrolysers

Appareils électrodomestiques et analogues – Sécurité –
Partie 2-108: Règles particulières pour les électrolyseurs

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
P
CODE PRIX
ICS 13.120; 97.060 ISBN 2-8318-9530-8

– 2 – 60335-2-108 © IEC:2008
CONTENTS
FOREWORD.3
INTRODUCTION.5

1 Scope.6
2 Normative references .6
3 Definitions .7
4 General requirement.7
5 General conditions for the tests .7
6 Classification.7
7 Marking and instructions.7
8 Protection against access to live parts.8
9 Starting of motor-operated appliances .8
10 Power input and current .8
11 Heating .8
12 Void.8
13 Leakage current and electric strength at operating temperature.8
14 Transient overvoltages .8
15 Moisture resistance .8
16 Leakage current and electric strength.9
17 Overload protection of transformers and associated circuits .9
18 Endurance.9
19 Abnormal operation .9
20 Stability and mechanical hazards .9
21 Mechanical strength .9
22 Construction .9
23 Internal wiring.10
24 Components .10
25 Supply connection and external flexible cords .10
26 Terminals for external conductors.10
27 Provision for earthing .11
28 Screws and connections .11
29 Clearances, creepage distances and solid insulation .11
30 Resistance to heat and fire.11
31 Resistance to rusting.11
32 Radiation, toxicity and similar hazards.11

Bibliography.15

Annex AA (normative) Ageing test for elastomeric parts.12
Annex BB (informative) Guide for additional requirements to be considered for
inclusion in the end product standards for appliances that incorporate electrolysers .14

60335-2-108 © IEC:2008 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
___________
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
SAFETY –
Part 2-108: Particular requirements for electrolysers

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with an IEC Publication.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
This part of International Standard IEC 60335 has been prepared by IEC technical committee
61: Safety of household and similar electrical appliances.
It forms the first edition of IEC 60335-2-108.
The text of this part of IEC 60335 is based on the following documents:
FDIS Report on voting
61/3413/FDIS 61/3426/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 part 2 is to be used in conjunction with the latest edition of IEC 60335-1 and its
amendments. It was established on the basis of the fourth edition (2001) of that standard.

– 4 – 60335-2-108 © IEC:2008
NOTE 1 When “Part 1” is mentioned in this standard, it refers to IEC 60335-1.
This part 2 supplements or modifies the corresponding clauses in IEC 60335-1, so as to
convert that publication into the IEC standard: Safety requirements for electrical electrolysers.
NOTE 2 The following annexes contain provisions suitably modified from other IEC or ISO standards.
Annex AA Aging tests for elastomeric parts ISO 1817
When a particular subclause of Part 1 is not mentioned in this part 2, that subclause applies
as far as is reasonable. When this standard states "addition", "modification" or "replacement",
the relevant text in Part 1 is to be adapted accordingly.
NOTE 3 The following numbering system is used:
– subclauses, tables and figures that are numbered starting from 101 are additional to those in Part 1;
– unless notes are in a new subclause or involve notes in Part 1, they are numbered starting from 101, including
those in a replaced clause or subclause;
– additional annexes are lettered AA, BB, etc.
NOTE 4 The following print types are used:
– requirements: in roman type;
– test specifications: in italic type;
– notes: in small roman type.
Words in bold in the text are defined in Clause 3. When a definition concerns an adjective, the adjective and the
associated noun are also in bold.
A list of all parts of the IEC 60335 series, under the general title: Household and similar
electrical appliances – safety, can be found on the IEC website.
The committee has decided that the contents of this publication will remain unchanged until
the maintenance result date indicated on the IEC web site under "http://webstore.iec.ch" in the
data related to the specific publication. At this date, the publication will be
• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.
NOTE 5 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 standard be adopted for implementation
nationally not earlier than 12 months from the date of its publication.

60335-2-108 © IEC:2008 – 5 –
INTRODUCTION
It has been assumed in the drafting of this International Standard that the execution of its
provisions is entrusted to appropriately qualified and experienced persons.
This standard recognizes the internationally accepted level of protection against hazards such
as electrical, mechanical, thermal, fire and radiation of appliances when operated as in
normal use taking into account the manufacturer's instructions. It also covers abnormal
situations that can be expected in practice and takes into account the way in which
electromagnetic phenomena can affect the safe operation of appliances.
This standard takes into account the requirements of IEC 60364 as far as possible so that
there is compatibility with the wiring rules when the appliance is connected to the supply
mains. However, national wiring rules may differ.
If an appliance within the scope of this standard also incorporates functions that are covered
by another part 2 of IEC 60335, the relevant part 2 is applied to each function separately, as
far as is reasonable. If applicable, the influence of one function on the other is taken into
account.
When a part 2 standard does not include additional requirements to cover hazards dealt with
in Part 1, Part 1 applies.
NOTE 1 This means that the technical committees responsible for the part 2 standards have determined that it is
not necessary to specify particular requirements for the appliance in question over and above the general
requirements.
This standard is a product family standard dealing with the safety of appliances and takes
precedence over horizontal and generic standards covering the same subject.
NOTE 2 Horizontal and generic standards covering a hazard are not applicable since they have been taken into
consideration when developing the general and particular requirements for the IEC 60335 series of standards. For
example, in the case of temperature requirements for surfaces on many appliances, generic standards, such as
ISO 13732-1 for hot surfaces, are not applicable in addition to Part 1 or part 2 standards.
An appliance that complies with the text of this standard will not necessarily be considered to
comply with the safety principles of the standard if, when examined and tested, it is found to
have other features that impair the level of safety covered by these requirements.
An appliance employing materials or having forms of construction differing from those detailed
in the requirements of this standard may be examined and tested according to the intent of
the requirements and, if found to be substantially equivalent, may be considered to comply
with the standard.
For electrolysers, testing in accordance with this standard is an option and cannot be
required as a precondition for testing the complete appliance, for example by reference in
Clause 24 of a part 2 of IEC 60335. However, testing of the appliance should be reduced if an
incorporated electrolyser including its protection system or control system, if any, complies
with this standard.
In particular, the construction detail inspection and testing may be done separately on the
electrolysers, thereby eliminating the need for inspection and testing when the electrolysers
is applied to different appliances.

– 6 – 60335-2-108 © IEC:2008
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
SAFETY –
Part 2-108: Particular requirements for electrolysers

1 Scope
This clause of Part 1 is replaced by the following.
This International Standard deals with the safety of electrolysers that produce low viscosity,
ionized liquids intended for use as detergent free wash water in appliances for household and
similar purposes and which conform with the standards applicable to such appliances. It
applies to electrolysers tested separately, under the most severe conditions that may be
expected to occur in normal use, their rated voltage being not more than 250 V.
NOTE 101 Examples of appliances that may contain electrolysers are
– dishwashers (IEC 60335-2-5);
– washing machines (IEC 60335-2-7);
– appliances producing wash water for hygiene purposes.
NOTE 102 This standard does not supersede the requirements of standards relevant to the particular appliance in
which the electrolyser is used. However, if the electrolyser used complies with this standard, the tests for the
electrolyser specified in the particular appliance standard may not need to be made in the particular appliance or
assembly. If the electrolyser control system is associated with the particular appliance control system, additional
tests may be necessary on the final appliance. A guide for additional requirements to be considered for inclusion in
the end product standards for appliances that use electrolysers is given in Annex BB.
NOTE 103 Attention is drawn to the fact that
– for appliances intended to be used in vehicles or on board ships or aircraft, additional requirements may be
necessary;
– in many countries, additional requirements are specified by the national health authorities, the national
authorities responsible for the protection of labour, the national water supply authorities and similar authorities.
NOTE 104 This standard does not apply to
– appliances intended exclusively for industrial purposes;
– appliances intended to be used in locations where special conditions prevail, such as the presence of a
corrosive or explosive atmosphere (dust, vapour or gas).
2 Normative references
This clause of Part 1 is applicable except as follows.
Addition:
IEC 60068-2-52, Environmental testing – Part 2: Tests – Test Kb: Salt mist, cyclic (sodium,
chloride solution)
IEC 60079-15:2005, Electrical apparatus for explosive gas atmospheres – Part 15:
Construction, test and marking of type of protection, “n” electrical apparatus
ISO 1817:2005, Rubber, vulcanized – Determination of the effect of liquids

60335-2-108 © IEC:2008 – 7 –
3 Definitions
This clause of Part 1 is applicable except as follows.
3.1.9 Replacement:
normal operation
operation of the electrolyser under the following conditions:
If the electrolyser is intended to be filled by the user, it is filled with the amount and type of
electrolyte specified in the instructions.
+ 10
Water is passed through the electrolyser, the temperature of the water being 15 °C °C.
− 5
3.101
electrolyser
device to produce ionized washing water
4 General requirement
This clause of Part 1 is applicable.
5 General conditions for the tests
This clause of Part 1 is applicable except as follows.
5.101 Electrolysers are tested as motor-operated appliances.
6 Classification
This clause of Part 1 is applicable except as follows.
Modification:
Electrolysers shall be of class I, class II or class III. They may be class 0 if their rated
voltage does not exceed 150 V.
6.101 Electrolysers are classified as being
– intended for direct connection of the appliance supply cord to the electrolyser terminals, or
– not intended for direct connection of the appliance supply cord to the electrolyser
terminals.
NOTE 1 Electrolysers can, in both cases, be delivered with or without the supply cord.
NOTE 2 Electrolysers intended for direct connection of the appliance supply cord to their terminals may also be
used without the supply cord being connected directly to their terminals.
Compliance is checked by inspection and by the relevant tests.
7 Marking and instructions
This clause of Part 1 is applicable except as follows.

– 8 – 60335-2-108 © IEC:2008
7.1 Modification:
The rated power input or rated current need not be marked.
7.5 Not applicable.
7.7 Not applicable.
7.12 Replacement:
The instructions shall contain the quantity and details of the electrolyte to be used and details
of the chemical reactions that occur in the electrolyser.
NOTE Details of the electrolyte used may be given, for example, in terms of a generic name or a manufacturer’s
part number.
8 Protection against access to live parts
This clause of Part 1 is applicable.
9 Starting of motor-operated appliances
This clause of Part 1 is not applicable.
10 Power input and current
This clause of Part 1 is not applicable.
11 Heating
This clause of Part 1 is applicable except as follows.
11.7 Replacement:
Electrolysers are operated until steady conditions are established.
12 Void
13 Leakage current and electric strength at operating temperature
This clause of Part 1 is applicable.
14 Transient overvoltages
This clause of Part 1 is applicable.
15 Moisture resistance
This clause of Part 1 is applicable

60335-2-108 © IEC:2008 – 9 –
16 Leakage current and electric strength
This clause of Part 1 is applicable.
17 Overload protection of transformers and associated circuits
This clause of Part 1 is applicable.
18 Endurance
This clause of Part 1 is not applicable.
19 Abnormal operation
This clause of Part 1 is applicable.
20 Stability and mechanical hazards
This clause of Part 1 is applicable.
21 Mechanical strength
This clause of Part 1 is applicable.
22 Construction
This clause of Part 1 is applicable except as follows.
22.6 Addition:
Elastomeric parts that withstand the ageing test specified in Annex AA are not considered to
be parts where leakage could occur.
Modification:
Instead of coloured water, a coloured solution from the electrolysed wash water is used.
22.101 Electrolysers shall be constructed so that they are always open to the atmosphere
through an aperture of at least 5 mm in diameter, or 20 mm in area with a width of at least
3 mm. The aperture shall be located so that it is unlikely to be obstructed in normal use.
Compliance is checked by inspection and by measurement.
22.102 During normal use of the electrolyser, the chemical reaction in the electrolyser
shall not produce hydrogen gas that is released in hazardous amounts into areas
• where electrical components that produce arcs and sparks during normal operation or
abnormal operation are mounted, unless these components have been tested and found at
least to comply with IEC 60079-15 for group IIC gases; or
o
• that contain surfaces with a temperature exceeding 460 C during normal operation or
abnormal operation and that may be exposed to the released hydrogen gas.

– 10 – 60335-2-108 © IEC:2008
Compliance is checked by inspection, by measuring the temperature of the relevant surfaces
during normal operation and abnormal operation and by the following test.
The electrolyser is operated for one cycle under conditions of normal operation.
The concentration of hydrogen gas in the relevant areas is measured continuously from the
beginning of the test until the end of the cycle. The background hydrogen concentration
measured prior to the test is subtracted from the maximum concentration measured during the
test.
The measured value shall not exceed 50 % of the lower flammability limit (LFL) of hydrogen.
NOTE 1 The LFL of hydrogen gas is 4 %V/V of air.
NOTE 2 The instrument used for monitoring gas concentration, such as those which use infrared sensing
techniques, should have a fast response, typically 2 s to 3 s and should not unduly influence the result of the test.
NOTE 3 If gas chromatography is to be used, the gas sampling in confined areas should occur at a rate not
exceeding 2 ml every 30 s.
NOTE 4 Other instruments are not precluded from being used provided that they do not unduly influence the
results.
22.103 During normal use of the electrolyser, the chemical reaction in the electrolyser
shall not produce wash water that causes corrosion due to the pH value of the wash water.
Compliance is checked by the salt mist test, Kb of IEC 60068-2-52, severity 2 being
applicable. The pH value of the solution used shall be approximately equal to that of the wash
water as measured during normal use of the appliance if the value is greater than that specified in
IEC 60068-2-52.
Before the test, enclosures having a coating are scratched by means of a hardened steel pin,
the end of which has the form of a cone with a top angle of 40°. Its tip is rounded with a
radius of 0,25 mm ± 0,02 mm. The pin is loaded so that the force exerted along its axis is
10 N ± 0,5 N. The pin is held at an angle of 80°– 85° to the horizontal and scratches are made
by drawing the pin along the surface of the coating at a speed of approximately 20 mm/s. Five
scratches are made at least 5 mm apart and at least 5 mm from the edges.
After the test, the electrolyser shall not have deteriorated to such an extent that compliance
with this standard, in particular with Clauses 8 and 27, is impaired. The coating shall not be
broken and shall not have loosened from the surface.
23 Internal wiring
This clause of Part 1 is applicable.
24 Components
This clause of Part 1 is applicable.
25 Supply connection and external flexible cords
This clause of Part 1 is applicable.
26 Terminals for external conductors
This clause of Part 1 is applicable.

60335-2-108 © IEC:2008 – 11 –
27 Provision for earthing
This clause of Part 1 is applicable.
28 Screws and connections
This clause of Part 1 is applicable.
29 Clearances, creepage distances and solid insulation
This clause of Part 1 is applicable except as follows.
29.2 Replacement:
The microenvironment is pollution degree 3, and the insulation shall have a CTI not less than
250, unless the insulation is enclosed or located so that it is unlikely to be exposed to
pollution during normal use of the electrolyser due to electrolyte used.
30 Resistance to heat and fire
This clause of Part 1 is applicable except as follows.
30.2.2 Not applicable.
31 Resistance to rusting
This clause of Part 1 is applicable.
32 Radiation, toxicity and similar hazards
This clause of Part 1 is applicable except as follows.
Addition:
The ozone concentration produced by the chemical reactions in the electrolyser shall not be
excessive.
Compliance is checked by the following test, which is carried out in a room without openings
having dimensions of 2,5 m × 3,5 m × 3,0 m, the walls being covered with polyethylene sheet.
The room is maintained at approximately 25 °C and 50 % relative humidity. The electrolyser
is positioned in accordance with the instructions and then operated for one cycle under
conditions of normal operation.
The ozone sampling tube is to be located 10 mm from the gas outlet aperture specified in
22.101. The background ozone concentration measured prior to the test is subtracted from
the maximum concentration measured during the test.
-6
The percentage of ozone in the room shall not exceed 5 × 10 .

– 12 – 60335-2-108 © IEC:2008
Annexes
The annexes of Part 1 are applicable except as follows.

Annex AA
(normative)
Ageing test for elastomeric parts

The ageing test on elastomeric parts is carried out by measuring their hardness and mass
before and after immersion in a solution of the electrolysed portion of the wash water at
elevated temperature.
The test is carried out on at least three samples of each part. The samples and test procedure
are as specified in ISO 1817, with the following modifications.
4 Test liquids
The liquid used is the electrolysed portion of the wash water obtained under the conditions of
Clause 11.
The total mass of the test pieces immersed shall not exceed 100 g for each litre of solution.
The test pieces are completely immersed with their entire surface freely exposed to the
solution. During the tests, the test pieces shall not be exposed to direct light. Test pieces of
different compounds shall not be immersed in the same solution at the same time.
5 Test pieces
5.4 Conditioning
The temperature is 23 °C ± 2 °C and the relative humidity is (50 ± 5) %.
6 Immersion in the test liquid
6.1 Temperature
+5
The solution is heated within 1 h with the test pieces immersed, to a temperature of 75 °C
and maintained at this value. The solution is renewed every 24 h and heated in the same way.
NOTE To avoid undue evaporation of the solution, it is recommended to use a closed-circuit system or similar
method for renewing the solution.
6.2 Duration
+1
The test pieces are immersed for a total period of 48 h.
The test pieces are then immediately immersed in a fresh solution that is maintained at
ambient temperature. The pieces are immersed for 45 min ± 15 min.
After having been removed from the solution, the test pieces are rinsed in cold water at
15 °C ± 5 °C and then dried with blotting paper.

60335-2-108 © IEC:2008 – 13 –
7 Procedure
7.2 Change in mass
The increase in mass of the test pieces shall not exceed 10 % of the value determined before
immersion.
7.6 Change in hardness
The micro-test for hardness applies.
The hardness of the test pieces shall not have changed by more than 8 IRHD. Their surface
shall not have become sticky and shall show no crack visible to the naked eye or any other
deterioration.
– 14 – 60335-2-108 © IEC:2008
Annex BB
(informative)
Guide for additional requirements to be considered for inclusion in the
end product standards for appliances that incorporate electrolysers

The following list is given as a guide for the detailed information that may need to be specified
in the end product standards for appliances that incorporate electrolysers:
• instruction to the user to avoid blocking the electrolyser aperture during use;
• application of 22.17 to spacers intended to prevent the electrolyser aperture being
blocked by walls;
• the need to apply 22.102 to the end product to check that hydrogen gas does not
accumulate in the vicinity of critical components;
• the need to apply 22.103 to the end product to check that the electrolysed water does not
cause corrosion of critical parts.

60335-2-108 © IEC:2008 – 15 –
Bibliography
The bibliography of Part 1 is applicable except as follows.
Addition:
IEC 60335-2-5, Household and similar electrical appliances – Safety – Part 2: Particular
requirements for dishwashers
IEC 60335-2-7, Household and similar electrical appliances – Safety – Part 2: Particular
requirements for washing machines
ISO 13732-1, Ergonomics of the thermal environment – Methods for the assessment of human
responses to contact with surfaces – Part 1: Hot surfaces

___________
– 16 – 60335-2-108 © CEI:2008
SOMMAIRE
AVANT-PROPOS.17
INTRODUCTION.19

1 Domaine d'application .20
2 Références normatives.20
3 Définitions .21
4 Exigences générales .21
5 Conditions générales d’essais .21
6 Classification.21
7 Marquage et instructions .22
8 Protection contre l'accès aux parties actives .22
9 Démarrage des appareils à moteur.22
10 Puissance et courant .22
11 Echauffements .22
12 Vacant.22
13 Courant de fuite et rigidité diélectrique à la température de régime .22
14 Surtensions transitoires.22
15 Résistance à l'humidité.23
16 Courant de fuite et rigidité diélectrique .23
17 Protection contre la surcharge des transformateurs et des circuits associés.23
18 Endurance.23
19 Fonctionnement anormal .23
20 Stabilité et dangers mécaniques .23
21 Résistance mécanique .23
22 Construction .23
23 Conducteurs internes .24
24 Composants .25
25 Raccordement au réseau et câbles souples extérieurs .25
26 Bornes pour conducteurs externes .25
27 Dispositions en vue de la mise à la terre .25
28 Vis et connexions .25
29 Distances dans l'air, lignes de fuite et isolation solide .25
30 Résistance à la chaleur et au feu.25
31 Protection contre la rouille.25
32 Rayonnement, toxicité et dangers analogues.25

Bibliographie.

Annexe AA (normative) Essai de vieillissement des parties en élastomère.27
Annexe BB (informative) Guide pour les exigences supplémentaires à prendre en
considération pour être rajoutées dans les normes de produit fini des appareils
comportant des électrolyseurs .29

60335-2-108 © CEI:2008 – 17 –
COMMISSION ÉLECTROTECHNIQUE INTERNATIONALE
______________
APPAREILS ÉLECTRODOMESTIQUES ET ANALOGUES –
SÉCURITÉ –
Partie 2-108: Règles particulières pour les électrolyseurs

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'unification 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 n’a prévu aucune procédure de marquage valant indication d’approbation et n'engage pas sa
responsabilité pour les équipements déclarés conformes à une de ses Publications.
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 propriété intellectuelle ou de droits analogues. La CEI ne saurait être tenue pour
responsable de ne pas avoir identifié de tels droits de propriété et de ne pas avoir signalé leur existence.
La présente partie de la Norme internationale CEI 60335 a été établie par le comité
d’études 61 de la CEI: Sécurité des appareils électrodomestiques et analogues.
Elle constitue la première édition de la CEI 60335-2-108.
Le texte de cette norme est issu des documents suivants:
FDIS Rapport de vote
61/3413/FDIS 61/3426/RVD
Le rapport de vote indiqué dans le tableau ci-dessus donne toute infor
...

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