IEC 60335-2-52:2002

IEC 60335-2-52 ®
Edition 3.2 2017-10
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
colour
inside
Household and similar electrical appliances – Safety –
Part 2-52: Particular requirements for oral hygiene appliances

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IEC 60335-2-52 ®
Edition 3.2 2017-10
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
colour
inside
Household and similar electrical appliances – Safety –

Part 2-52: Particular requirements for oral hygiene appliances

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 13.120; 97.170 ISBN 978-2-8322-4969-7

IEC 60335-2-52 ®
Edition 3.2 2017-10
CONSOLIDATED VERSION
REDLINE VERSION
colour
inside
Household and similar electrical appliances – Safety –
Part 2-52: Particular requirements for oral hygiene appliances

– 2 – IEC 60335-2-52:2002+AMD1:2008

+AMD2:2017 CSV  IEC 2017
CONTENTS
FOREWORD . 3

INTRODUCTION . 6

1 Scope . 7

2 Normative references . 7

3 Definitions . 7

4 General requirement . 8

5 General conditions for the tests . 8
6 Classification . 8
7 Marking and instructions . 8
8 Protection against access to live parts . 8
9 Starting of motor-operated appliances . 8
10 Power input and current . 8
11 Heating . 9
12 Void. 9
13 Leakage current and electric strength at operating temperature . 9
14 Transient overvoltages . 10
15 Moisture resistance . 10
16 Leakage current and electric strength . 10
17 Overload protection of transformers and associated circuits . 10
18 Endurance . 10
19 Abnormal operation . 10
20 Stability and mechanical hazards . 11
21 Mechanical strength . 11
22 Construction . 11
23 Internal wiring . 11
24 Components . 11
25 Supply connection and external flexible cords . 11
26 Terminals for external conductors . 11
27 Provision for earthing . 12

28 Screws and connections . 12
29 Clearances, creepage distances and solid insulation . 12
30 Resistance to heat and fire . 12
31 Resistance to rusting . 12
32 Radiation, toxicity and similar hazards . 12
Annexes . 13
Bibliography . 13

Figure 101 – Probe for measuring surface temperatures . 12
Table 101 – Maximum temperature rises of external accessible surfaces under normal
operating conditions. 9

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INTERNATIONAL ELECTROTECHNICAL COMMISSION

____________
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –

SAFETY –
Part 2-52: Particular requirements for oral hygiene appliances

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
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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 itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
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
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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of

patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
This consolidated version of the official IEC Standard and its amendments has been prepared
for user convenience.
IEC 60335-2-52 edition 3.2 contains the third edition (2002-10) [documents 61/2221/FDIS and
61/2296/RVD], its amendment 1 (2008-04) [documents 61/3546/FDIS and 61/3600/RVD] and its
amendment 2 (2017-10) [documents 61/5314/CDV and 61/5430A/RVC].
In this Redline version, a vertical line in the margin shows where the technical content is
modified by amendments 1 and 2. Additions are in green text, deletions are in strikethrough red
text. A separate Final version with all changes accepted is available in this publication.

– 4 – IEC 60335-2-52:2002+AMD1:2008

+AMD2:2017 CSV  IEC 2017
This part of International Standard IEC 60335 has been prepared by IEC technical committee
61: Safety of household and similar electrical appliances.

This third edition constitutes a technical revision.

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.

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 electric oral hygiene
appliances.
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 2 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 3 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.
The following differences exist in the countries indicated below.
– 6.1: Class 0 appliances are allowed (Japan).
– 6.1: Appliances may have other classifications (USA).
– 7.12.1: Additional instructions are required (USA).

– 11.7: The duration and number of cycles are different (USA).
– 19.101: The test is different (USA).
– 22.36: Hand-held parts may be class 0 construction (Japan).

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The committee has decided that the contents of the base publication and its amendments will
remain unchanged until the stability date indicated on the IEC web site under

"http://webstore.iec.ch" in the data related to the specific publication. At this date, the

publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or

• amended.
NOTE 4 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.

A bilingual version of this publication may be issued at a later date.

IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct
understanding of its contents. Users should therefore print this document using a
colour printer.
– 6 – IEC 60335-2-52:2002+AMD1:2008

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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.
+AMD2:2017 CSV  IEC 2017
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –

SAFETY –
Part 2-52: Particular requirements for oral hygiene appliances

1 Scope
This clause of Part 1 is replaced by the following.
This International Standard deals with the safety of electric oral hygiene appliances for
household and similar purposes, their rated voltage being not more than 250 V.
NOTE 101 Examples of appliances covered by this standard are
– oral irrigators;
– toothbrushes.
As far as is practicable, this standard deals with the common hazards presented by
appliances that are encountered by all persons in and around the home. However, in general,
it does not take into account
– the use of appliances by young children or infirm persons without supervision;
– playing with the appliance by young children.
– persons (including children) whose
• physical, sensory or mental capabilities; or
• lack of experience and knowledge
prevents them from using the appliance safely without supervision or instruction;
– children playing with the appliance.
NOTE 102 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 and similar authorities.
NOTE 103 This standard does not apply to appliances for medical purposes (IEC 60601).
2 Normative references
This clause of Part 1 is applicable except as follows.
Addition:
IEC 60584-1, Thermocouples – Part 1: EMF specifications and tolerances
3 Definitions
This clause of Part 1 is applicable except as follows.
3.1.9 Replacement:
normal operation
operation of the appliance under the following conditions

– 8 – IEC 60335-2-52:2002+AMD1:2008

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Oral irrigators are operated with the reservoir filled with water having a temperature of

approximately 45 °C, to the level specified in the instructions. In the absence of such

instructions, the reservoir is filled to the maximum level.

Other appliances are operated without load.

4 General requirement
This clause of Part 1 is applicable.

5 General conditions for the tests

This clause of Part 1 is applicable.
6 Classification
This clause of Part 1 is applicable except as follows.
6.1 Modification:
Appliances shall be class II or class III.
6.2 Addition:
Class II appliances shall be at least IPX7 except that parts intended to be fixed, and
transformers with pins for insertion into socket-outlets, shall be at least IPX4.
Class III appliances shall be at least IPX4. However, if the rated voltage does not exceed
24 V, they may be IPX0.
7 Marking and instructions
This clause of Part 1 is applicable except as follows.
7.12.1 Addition:
The installation instructions shall state that parts that have to be fixed must be fixed so that
they cannot fall into water, unless they are of IPX7 construction.

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 applicable.

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11 Heating
This clause of Part 1 is applicable except as follows.

11.3 Addition:
Where the external accessible surfaces are suitably flat and access permits, then the test

probe of Figure 101 is used to measure the temperature rises of external accessible

surfaces specified in Table 101. The probe is applied with a force of 4 N ± 1 N to the surface

in such a way that the best possible contact between the probe and the surface is ensured.

The measurement is performed after a contact period of 30 s.

The probe may be held in place using a laboratory stand clamp or similar device. Any
measuring instrument giving the same results as the probe may be used.
11.7 Replacement:
Appliances are operated for five cycles, each cycle comprising an operating period of 3 min
and a rest period of 1 min.
During the rest period, the reservoir of oral irrigators is refilled.
NOTE 101 If the reservoir empties during the operating period, it is refilled and the test is continued.
11.8 Addition:
During the test, the temperature rises are monitored continuously and shall not exceed the
values shown in Table 101.
Table 101 – Maximum temperature rises of external accessible surfaces
under normal operating conditions

Surface Temperature rise of external accessible surfaces
K
Bare metal 38
a 42
Coated metal
Glass and ceramic 51
b, c 58
Plastic and plastic coating > 0,4 mm

a
Metal is considered coated when a coating having a minimum thickness of 90 µm made by enamel or non-

substantially plastic coating is used.

b
The temperature rise limit of plastic also applies for plastic material having a metal finish of thickness less
than 0,1 mm.
c
When the thickness of the plastic coating does not exceed 0,4 mm, the temperature rise limits of the coated
metal or of glass and ceramic material apply.

12 Void
13 Leakage current and electric strength at operating temperature
This clause of Part 1 is applicable.

– 10 – IEC 60335-2-52:2002+AMD1:2008

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14 Transient overvoltages
This clause of Part 1 is applicable.

15 Moisture resistance
This clause of Part 1 is applicable.

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 except as follows.
19.1 Addition:
Class II oral irrigators are also subjected to the test of 19.101.
19.2 Addition:
The test is carried out without water in the reservoir.
19.101 The hose is punctured within the enclosure of the appliance at the most unfavourable
location. Rubber hoses are punctured by means of a 0,8 mm diameter needle. Thermoplastic
hoses are punctured by means of a 0,5 mm diameter heated needle, care being taken not to
enlarge the hole.
NOTE When reassembling the appliance, sealants such as silicone rubber may be used to insure that the joints
are watertight.
The appliance is operated as specified in Clause 11, but with water containing 1 % NaCl.
During the last cycle of operation, the water pressure in the hose is increased to the maximum
obtainable by blocking the water outlet. The pressure is then reduced to its normal value.
A vessel of insulating material is filled with the saline solution and the hand-held part of the
appliance is immersed to a depth of approximately 100 mm. The appliance is operated without
restricting the water flow until 30 s after the reservoir has emptied. During the test, the
leakage current is measured, as specified in 13.2. It is measured between any pole of the
supply and a rectangular stainless steel electrode, having dimensions approximately
250 mm x 50 mm, placed in the solution.
The leakage current shall not exceed 0,5 mA.

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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.
22.36 Addition:
Hand-held parts shall be class III construction having a working voltage not exceeding
24 V.
22.101 Class II appliances shall be constructed so that parts intended to be fixed can be
fixed securely, unless they are classified at least IPX7.
Compliance is checked b
...

IEC 60335-2-52
Edition 3.0 2002-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Household and similar electrical appliances – Safety –
Part 2-52: Particular requirements for oral hygiene appliances

Appareils électrodomestiques et analogues – Sécurité –
Partie 2-52: Règles particulières pour les appareils d’hygiène buccale

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by
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International Standards for all electrical, electronic and related technologies.

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IEC 60335-2-52
Edition 3.0 2002-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Household and similar electrical appliances – Safety –
Part 2-52: Particular requirements for oral hygiene appliances

Appareils électrodomestiques et analogues – Sécurité –
Partie 2-52: Règles particulières pour les appareils d’hygiène buccale

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
L
CODE PRIX
ICS 97.170; 13.120 ISBN 2-8318-8272-9
– 2 – 60335-2-52 © CEI:2002
SOMMAIRE
AVANT-PROPOS.4
INTRODUCTION.8

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

Annexes .20

Bibliographie.20

60335-2-52 © IEC:2002 – 3 –
CONTENTS
FOREWORD.5
INTRODUCTION.9
1 Scope.11
2 Normative references .11
3 Definitions .11
4 General requirement.13
5 General conditions for the tests .13
6 Classification.13
7 Marking and instructions.13
8 Protection against access to live parts.13
9 Starting of motor-operated appliances .13
10 Power input and current .13
11 Heating .15
12 Void.15
13 Leakage current and electric strength at operating temperature.15
14 Transient overvoltages .15
15 Moisture resistance .15
16 Leakage current and electric strength.15
17 Overload protection of transformers and associated circuits .15
18 Endurance.15
19 Abnormal operation .15
20 Stability and mechanical hazards .17
21 Mechanical strength .17
22 Construction .17
23 Internal wiring.17
24 Components .19
25 Supply connection and external flexible cords .19
26 Terminals for external conductors.19
27 Provision for earthing .19
28 Screws and connections .19
29 Clearances, creepage distances and solid insulation .19
30 Resistance to heat and fire.19
31 Resistance to rusting.19
32 Radiation, toxicity and similar hazards.19

Annexes .21

Bibliography.21

– 4 – 60335-2-52 © CEI:2002
COMMISSION ÉLECTROTECHNIQUE INTERNATIONALE
____________
APPAREILS ÉLECTRODOMESTIQUES ET ANALOGUES –
SÉCURITÉ –
Partie 2-52: Règles particulières pour
les appareils d'hygiène buccale

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
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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
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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.
Cette troisième édition annule et remplace la deuxième édition parue en 1994, dont elle
constitue une révision technique.
Cette version bilingue, publiée en 2005-10, correspond à la version anglaise.
Le texte anglais de cette norme est issu des documents 61/2221/FDIS et 61/2296/RVD. Le
rapport de vote 61/2296/RVD donne toute information sur le vote ayant abouti à l’approbation
de cette norme.
60335-2-52 © IEC:2002 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
SAFETY –
Part 2-52: Particular requirements for oral hygiene appliances

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.
This third edition cancels and replaces the second edition published in 1994. It constitutes a
technical revision.
This bilingual version, published in 2005-10, corresponds to the English version.
The text of this part of IEC 60335 is based on the following documents:
FDIS Report on voting
61/2221/FDIS 61/2296/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.

– 6 – 60335-2-52 © CEI:2002
La version française de cette norme n’a pas été soumise au vote.
La présente partie 2 doit être utilisée conjointement avec la dernière édition de la CEI 60335-1
et ses amendements. Elle a été établie sur la base de la quatrième édition (2001) de cette
norme.
NOTE 1 L’expression “Partie 1” utilisée dans la présente norme fait référence à la CEI 60335-1.
La présente partie 2 complète ou modifie les articles correspondants de la CEI 60335-1, de
façon à transformer cette publication en norme CEI: Règles de sécurité pour les appareils
d'hygiène buccale électriques.
Lorsqu'un paragraphe particulier de la Partie 1 n'est pas mentionné dans cette partie 2, ce
paragraphe s'applique pour autant qu’il est raisonnable. Lorsque la présente norme spécifie
“addition”, “modification” ou “remplacement”, le texte correspondant de la Partie 1 doit être
adapté en conséquence.
NOTE 2 Le système de numérotation
...

IEC 60335-2-52
Edition 3.1 2008-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Household and similar electrical appliances – Safety –
Part 2-52: Particular requirements for oral hygiene appliances

Appareils électrodomestiques et analogues – Sécurité –
Partie 2-52: Règles particulières pour les appareils d'hygiène buccale

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IEC 60335-2-52
Edition 3.1 2008-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Household and similar electrical appliances – Safety –
Part 2-52: Particular requirements for oral hygiene appliances

Appareils électrodomestiques et analogues – Sécurité –
Partie 2-52: Règles particulières pour les appareils d'hygiène buccale

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CD
CODE PRIX
ICS 13.120; 97.120 ISBN 2-8318-9757-2
– 2 – 60335-2-52 © IEC:2002+A1:2008

CONTENTS
FOREWORD.3

INTRODUCTION.5

1 Scope.6

2 Normative references .6

3 Definitions .6

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.7
9 Starting of motor-operated appliances .7
10 Power input and current .7
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.8
17 Overload protection of transformers and associated circuits .8
18 Endurance.8
19 Abnormal operation .8
20 Stability and mechanical hazards .9
21 Mechanical strength .9
22 Construction .9
23 Internal wiring.9
24 Components .10
25 Supply connection and external flexible cords .10
26 Terminals for external conductors.10
27 Provision for earthing .10

28 Screws and connections .10
29 Clearances, creepage distances and solid insulation .10
30 Resistance to heat and fire.10
31 Resistance to rusting.10
32 Radiation, toxicity and similar hazards.10

Annexes .11

Bibliography.11

60335-2-52 © IEC:2002+A1:2008 – 3 –

INTERNATIONAL ELECTROTECHNICAL COMMISSION

____________
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –

SAFETY –
Part 2-52: Particular requirements for oral hygiene appliances

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.
This consolidated version of IEC 60335-2-52 consists of the third edition (2002) [documents
61/2221/FDIS and 61/2296/RVD] and its amendment 1 (2008) [documents 61/3546/FDIS and
61/3600/RVD].
The technical content is therefore identical to the base edition and its amendment and has
been prepared for user convenience.
It bears the edition number 3.1.
A vertical line in the margin shows where the base publication has been modified by
amendment 1.
The French version of this standard has not been voted upon.

– 4 – 60335-2-52 © IEC:2002+A1:2008

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.

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 electric oral hygiene
appliances.
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 2 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 3 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.
The following differences exist in the countries indicated below.
– 6.1: Class 0 appliances are allowed (Japan).
– 6.1: Appliances may have other classifications (USA).
– 7.12.1: Additional instructions are required (USA).
– 11.7: The duration and number of cycles are different (USA).
– 19.101: The test is different (USA).
– 22.36: Hand-held parts may be class 0 construction (Japan).
The committee has decided that the contents of the base publication and its amendments 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 4 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 the amendment 1 be adopted for implementation
nationally not earlier than 12 months or later than 36 months from the date of publication.

60335-2-52 © IEC:2002+A1:2008 – 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.
– 6 – 60335-2-52 © IEC:2002+A1:2008

HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –

SAFETY –
Part 2-52: Particular requirements for oral hygiene appliances

1 Scope
This clause of Part 1 is replaced by the following.
This International Standard deals with the safety of electric oral hygiene appliances for
household and similar purposes, their rated voltage being not more than 250 V.
NOTE 101 Examples of appliances covered by this standard are
– oral irrigators;
– toothbrushes.
As far as is practicable, this standard deals with the common hazards presented by
appliances that are encountered by all persons in and around the home. However, in general,
it does not take into account
– persons (including children) whose
• physical, sensory or mental capabilities; or
• lack of experience and knowledge
prevents them from using the appliance safely without supervision or instruction;
– children playing with the appliance.
NOTE 102 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 and similar authorities.
NOTE 103 This standard does not apply to appliances for medical purposes (IEC 60601).
2 Normative references
This clause of Part 1 is applicable.

3 Definitions
This clause of Part 1 is applicable except as follows.
3.1.9 Replacement:
normal operation
operation of the appliance under the following conditions
Oral irrigators are operated with the reservoir filled with water having a temperature of
approximately 45 °C, to the level specified in the instructions. In the absence of such
instructions, the reservoir is filled to the maximum level.
Other appliances are operated without load.

60335-2-52 © IEC:2002+A1:2008 – 7 –

4 General requirement
This clause of Part 1 is applicable.

5 General conditions for the tests

This clause of Part 1 is applicable.

6 Classification
This clause of Part 1 is applicable except as follows.
6.1 Modification:
Appliances shall be class II or class III.
6.2 Addition:
Class II appliances shall be at least IPX7 except that parts intended to be fixed, and
transformers with pins for insertion into socket-outlets, shall be at least IPX4.
Class III appliances shall be at least IPX4. However, if the rated voltage does not exceed
24 V, they may be IPX0.
7 Marking and instructions
This clause of Part 1 is applicable except as follows.
7.12.1 Addition:
The installation instructions shall state that parts that have to be fixed must be fixed so that
they cannot fall into water, unless they are of IPX7 construction.
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 applicable.

– 8 – 60335-2-52 © IEC:2002+A1:2008

11 Heating
This clause of Part 1 is applicable except as follows.

11.7 Replacement:
Appliances are operated for five cycles, each cycle comprising an operating period of 3 min

and a rest period of 1 min.
During the rest period, the reservoir of oral irrigators is refilled.

NOTE 101 If the reservoir empties during the operating period, it is refilled and the test is continued.
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.
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 except as follows.
19.1 Addition:
Class II oral irrigators are also subjected to the test of 19.101.

60335-2-52 © IEC:2002+A1:2008 – 9 –

19.2 Addition:
The test is carried out without water in the reservoir.

19.101 The hose is punctured within the enclosure of the appliance at the most unfavourable

location. Rubber hoses are punctured by means of a 0,8 mm diameter needle. Thermoplastic
hoses are punctured by means of a 0,5 mm diameter heated needle, care being taken not to
enlarge the hole.
NOTE When reassembling the appliance, sealants such as silicone rubber may be used to insure that the joints

are watertight.
The appliance is operated as specified in Clause 11, but with water containing 1 % NaCl.
During the last cycle of operation, the water pressure in the hose is increased to the maximum
obtainable by blocking the water outlet. The pressure is then reduced to its normal value.
A vessel of insulating material is filled with the saline solution and the hand-held part of the
appliance is immersed to a depth of approximately 100 mm. The appliance is operated without
restricting the water flow until 30 s after the reservoir has emptied. During the test, the
leakage current is measured, as specified in 13.2. It is measured between any pole of the
supply and a rectangular stainless steel electrode, having dimensions approximately
250 mm x 50 mm, placed in the solution.
The leakage current shall not exceed 0,5 mA.
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.
22.36 Addition:
Hand-held parts shall be class III construction having a working voltage not exceeding
24 V.
22.101 Class II appliances shall be constructed so that parts intended to be fixed can be
fixed securely, unless they are classified at least IPX7.
Compliance is checked by inspection.
NOTE Keyhole slots, hooks and similar means, without further means to prevent the appliance being inadvertently
lifted off the support, are not considered to be adequate means for fixing the appliance securely.
23 Internal wiring
This clause of Part 1 is applicable.
...