IEC 60335-2-73:2002

Household and similar electrical appliances - Safety - Part 2-73: Particular requirements for fixed immersion heaters

Deals with the safety of fixed electric immersion heaters intended for installation in a water tank for heating water to temperature below its boiling point. The rated voltage is not more than 250 V for single-phase and 480 V for other appliances.

Appareils électrodomestiques et analogues - Sécurité - Partie 2-73: Règles particulières pour les thermoplongeurs installés à poste fixe

Traite de la sécurité des thermoplongeurs électriques installés à poste fixe à usages domestiques et analogues, destinés à être installés dans une cuve pour chauffer de l'eau à une température inférieure à l'ébullition. La tension assignée n'est pas supérieure à 250 V pour les appareils monophasés et à 480 V pour les autres appareils.

General Information

• Status: Published
• Publication Date: 08-Oct-2002
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 91.140.65 - Water heating equipment
• Technical Committee: TC 61 - Safety of household and similar electrical appliances

Relations

• Amended By: IEC 60335-2-73:2002/AMD1:2006 - Amendment 1 - Household and similar electrical appliances - Safety - Part 2-73: Particular requirements for fixed immersion heaters
• Effective Date: 05-Sep-2023
• Amended By: IEC 60335-2-73:2002/AMD2:2009 - Amendment 2 - Household and similar electrical appliances - Safety - Part 2-73: Particular requirements for fixed immersion heaters
• Effective Date: 05-Sep-2023
• Revised: IEC 60335-2-73:2024 - Household and similar electrical appliances - Safety - Part 2-73: Particular requirements for fixed immersion heaters
• Effective Date: 05-Sep-2023

Standards Content (Sample)

INTERNATIONAL IEC
STANDARD
60335-2-73
Second edition
2002-10
Household and similar electrical appliances –
Safety –
Part 2-73:
Particular requirements for fixed
immersion heaters
Appareils électrodomestiques et analogues –
Sécurité –
Partie 2-73:
Règles particulières pour les thermoplongeurs installés
à poste fixe
Reference number
Publication numbering
As from 1 January 1997 all IEC publications are issued with a designation in the

60000 series. For example, IEC 34-1 is now referred to as IEC 60034-1.

Consolidated editions
The IEC is now publishing consolidated versions of its publications. For example,

edition numbers 1.0, 1.1 and 1.2 refer, respectively, to the base publication, the

base publication incorporating amendment 1 and the base publication incorporating

amendments 1 and 2.
Further information on IEC publications
The technical content of IEC publications is kept under constant review by the IEC,
thus ensuring that the content reflects current technology. Information relating to
this publication, including its validity, is available in the IEC Catalogue of
publications (see below) in addition to new editions, amendments and corrigenda.
Information on the subjects under consideration and work in progress undertaken
by the technical committee which has prepared this publication, as well as the list
of publications issued, is also available from the following:
• IEC Web Site (www.iec.ch)
• Catalogue of IEC publications
The on-line catalogue on the IEC web site (http://www.iec.ch/searchpub/cur_fut.htm)
enables you to search by a variety of criteria including text searches, technical
committees and date of publication. On-line information is also available on
recently issued publications, withdrawn and replaced publications, as well as
corrigenda.
• IEC Just Published
This summary of recently issued publications (http://www.iec.ch/online_news/
justpub/jp_entry.htm) is also available by email. Please contact the Customer
Service Centre (see below) for further information.
• Customer Service Centre
If you have any questions regarding this publication or need further assistance,
please contact the Customer Service Centre:
Email: [e-mail]
Tel: [phone]
Fax: [phone]
INTERNATIONAL IEC
STANDARD
60335-2-73
Second edition
2002-10
Household and similar electrical appliances –
Safety –
Part 2-73:
Particular requirements for fixed
immersion heaters
Appareils électrodomestiques et analogues –
Sécurité –
Partie 2-73:
Règles particulières pour les thermoplongeurs installés
à poste fixe
 IEC 2002  Copyright - all rights reserved
No part of this publication may be reproduced or utilized in any form or by any means, electronic or
mechanical, including photocopying and microfilm, without permission in writing from the publisher.
International Electrotechnical Commission, 3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, Switzerland
Telephone: [phone] Telefax: [phone] E-mail: [e-mail]  Web: www.iec.ch
PRICE CODE
Commission Electrotechnique Internationale
L
International Electrotechnical Commission
Международная Электротехническая Комиссия
For price, see current catalogue

– 2 – 60335-2-73  IEC:2002(E)

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 . 8
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. 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

60335-2-73  IEC:2002(E) – 3 –

INTERNATIONAL ELECTROTECHNICAL COMMISSION

___________
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –

SAFETY –
Part 2-73: Particular requirements for fixed immersion heaters

FOREWORD
1) The IEC (International Electrotechnical Commission) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of the 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, the IEC publishes International Standards. 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. The 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 the 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 National Committees.
3) The documents produced have the form of recommendations for international use and are published in the form
of standards, technical specifications, technical reports or guides and they are accepted by the National
Committees in that sense.
4) In order to promote international unification, IEC National Committees undertake to apply IEC International
Standards transparently to the maximum extent possible in their national and regional standards. Any
divergence between the IEC Standard and the corresponding national or regional standard shall be clearly
indicated in the latter.
5) The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with one of its standards.
6) Attention is drawn to the possibility that some of the elements of this International Standard may be the subject
of patent rights. The 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 second edition cancels and replaces the first edition published in 1994. It constitutes a
technical revision.
The text of this part of IEC 60335 is based on the following documents:
FDIS Report on voting
61/2176/FDIS 61/2257/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.
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 fixed electric
immersion heaters.
– 4 – 60335-2-73  IEC:2002(E)

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 committee has decided that the contents of this publication will remain unchanged until
2004. At this date, the publication will be
• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.
The following differences exist in the countries indicated below.
– 3.1.9: Normal operation is different (USA).
– 6.1: Class 0I appliances are allowed (Japan).
– 24.101: The requirement is not applicable (USA).
A bilingual version of this publication may be issued at a later date.

60335-2-73  IEC:2002(E) – 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.

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.
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.
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 – 60335-2-73  IEC:2002(E)

HOUSEHOLD AND SIMILAR ELECTRICAL
...

INTERNATIONAL IEC
STANDARD 60335-2-73
Edition 2.1
2006-03
Edition 2:2002 consolidated with amendment 1:2006
Household and similar electrical appliances –
Safety –
Part 2-73:
Particular requirements for fixed
immersion heaters
This English-language version is derived from the original
bilingual publication by leaving out all French-language
pages. Missing page numbers correspond to the French-
language pages.
Reference number
Publication numbering
As from 1 January 1997 all IEC publications are issued with a designation in the

60000 series. For example, IEC 34-1 is now referred to as IEC 60034-1.

Consolidated editions
The IEC is now publishing consolidated versions of its publications. For example,

edition numbers 1.0, 1.1 and 1.2 refer, respectively, to the base publication, the

base publication incorporating amendment 1 and the base publication incorporating

amendments 1 and 2.
Further information on IEC publications
The technical content of IEC publications is kept under constant review by the IEC,
thus ensuring that the content reflects current technology. Information relating to
this publication, including its validity, is available in the IEC Catalogue of
publications (see below) in addition to new editions, amendments and corrigenda.
Information on the subjects under consideration and work in progress undertaken
by the technical committee which has prepared this publication, as well as the list
of publications issued, is also available from the following:
• IEC Web Site (www.iec.ch)
• Catalogue of IEC publications
The on-line catalogue on the IEC web site (www.iec.ch/searchpub) enables you to
search by a variety of criteria including text searches, technical committees
and date of publication. On-line information is also available on recently issued
publications, withdrawn and replaced publications, as well as corrigenda.
• IEC Just Published
This summary of recently issued publications (www.iec.ch/online_news/ justpub)
is also available by email. Please contact the Customer Service Centre (see
below) for further information.
• Customer Service Centre
If you have any questions regarding this publication or need further assistance,
please contact the Customer Service Centre:

Email: [e-mail]
Tel: [phone]
Fax: [phone]
INTERNATIONAL IEC
STANDARD 60335-2-73
Edition 2.1
2006-03
Edition 2:2002 consolidated with amendment 1:2006
Household and similar electrical appliances –
Safety –
Part 2-73:
Particular requirements for fixed
immersion heaters
 IEC 2006 Copyright - all rights reserved
No part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical,
including photocopying and microfilm, without permission in writing from the publisher.
International Electrotechnical Commission, 3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, Switzerland
Telephone: [phone] Telefax: [phone] E-mail: [e-mail] Web: www.iec.ch
PRICE CODE
CD
Commission Electrotechnique Internationale
International Electrotechnical Commission
МеждународнаяЭлектротехническаяКомиссия
For price, see current catalogue

60335-2-73  IEC:2002+A1:2006 – 3 –

CONTENTS
FOREWORD.5

INTRODUCTION.9

1 Scope.11

2 Normative references .13

3 Definitions .13

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.15
9 Starting of motor-operated appliances .15
10 Power input and current .15
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 .17
18 Endurance.17
19 Abnormal operation .17
20 Stability and mechanical hazards .17
21 Mechanical strength .17
22 Construction .17
23 Internal wiring.19
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.21
32 Radiation, toxicity and similar hazards.21

Annexes .23

Bibliography.23

60335-2-73 © IEC:2002+A1:2006 – 5 –

INTERNATIONAL ELECTROTECHNICAL COMMISSION

___________
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –

SAFETY –
Part 2-73: Particular requirements for fixed immersion heaters

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 60335-2-73 consists of the second edition (2002)
[documents 61/2176/FDIS and 61/2257/RVD] and its amendment 1 (2006) [documents
61/2957/FDIS and 61/2987/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 2.1.
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.

60335-2-73  IEC:2002+A1:2006 – 7 –

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 fixed electric

immersion heaters.
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.
– 3.1.9: Normal operation is different (USA).
– 6.1: Class 0I appliances are allowed (Japan).
– 24.101: The requirement is not applicable (USA).
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.
60335-2-73  IEC:2002+A1:2006 – 9 –

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
...

NORME CEI
INTERNATIONALE 60335-2-73
Edition 2.1
2006-03
Edition 2:2002 consolidée par l’amendement 1:2006
Appareils électrodomestiques et analogues –
Sécurité –
Partie 2-73:
Règles particulières pour les thermoplongeurs
installés à poste fixe
Cette version française découle de la publication d’origine
bilingue dont les pages anglaises ont été supprimées.
Les numéros de page manquants sont ceux des pages

supprimées.
Numéro de référence
CEI 60335-2-73:2002+A1:2006(F)

Numérotation des publications
Depuis le 1er janvier 1997, les publications de la CEI sont numérotées à partir de

60000. Ainsi, la CEI 34-1 devient la CEI 60034-1.

Editions consolidées
Les versions consolidées de certaines publications de la CEI incorporant les

amendements sont disponibles. Par exemple, les numéros d’édition 1.0, 1.1 et 1.2

indiquent respectivement la publication de base, la publication de base incorporant
l’amendement 1, et la publication de base incorporant les amendements 1 et 2.

Informations supplémentaires
sur les publications de la CEI
Le contenu technique des publications de la CEI est constamment revu par la CEI
afin qu'il reflète l'état actuel de la technique. Des renseignements relatifs à cette
publication, y compris sa validité, sont disponibles dans le Catalogue des
publications de la CEI (voir ci-dessous) en plus des nouvelles éditions, amende-
ments et corrigenda. Des informations sur les sujets à l’étude et l’avancement des
travaux entrepris par le comité d’études qui a élaboré cette publication, ainsi que la
liste des publications parues, sont également disponibles par l’intermédiaire de:
• Site web de la CEI (www.iec.ch)
• Catalogue des publications de la CEI
Le catalogue en ligne sur le site web de la CEI (www.iec.ch/searchpub) vous permet
de faire des recherches en utilisant de nombreux critères, comprenant des
recherches textuelles, par comité d’études ou date de publication. Des informations
en ligne sont également disponibles sur les nouvelles publications, les publications
remplacées ou retirées, ainsi que sur les corrigenda.
• IEC Just Published
Ce résumé des dernières publications parues (www.iec.ch/online_news/justpub)
est aussi disponible par courrier électronique. Veuillez prendre contact avec le
Service client (voir ci-dessous) pour plus d’informations.
• Service clients
Si vous avez des questions au sujet de cette publication ou avez besoin de
renseignements supplémentaires, prenez contact avec le Service clients:
Email: [e-mail]
Tél: [phone]
Fax: [phone]
NORME CEI
INTERNATIONALE 60335-2-73
Edition 2.1
2006-03
Edition 2:2002 consolidée par l’amendement 1:2006
Appareils électrodomestiques et analogues –
Sécurité –
Partie 2-73:
Règles particulières pour les thermoplongeurs
installés à poste fixe
© IEC 2006 Droits de reproduction réservés
Aucune partie de cette publication ne peut être reproduite ni utilisée sous quelque forme que ce soit et par aucun
procédé, électronique ou mécanique, y compris la photocopie et les microfilms, sans l'accord écrit de l'éditeur.
International Electrotechnical Commission, 3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, Switzerland
Telephone: [phone] Telefax: [phone] E-mail: [e-mail] Web: www.iec.ch
CODE PRIX
CD
Commission Electrotechnique Internationale
International Electrotechnical Commission
МеждународнаяЭлектротехническаяКомиссия
Pour prix, voir catalogue en vigueur

– 2 – 60335-2-73  CEI:2005
SOMMAIRE
AVANT-PROPOS.4

INTRODUCTION.8

1 Domaine d’application .10

2 Références normatives.12

3 Définitions .12

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 .14
9 Démarrage des appareils à moteur.14
10 Puissance et courant .14
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.16
18 Endurance.16
19 Fonctionnement anormal .16
20 Stabilité et dangers mécaniques .16
21 Résistance mécanique .16
22 Construction .16
23 Conducteurs internes .18
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.20
32 Rayonnement, toxicité et dangers analogues.20

Annexes .22

Bibliographie.22

– 4 – 60335-2-73 © CEI:2005
COMMISSION ÉLECTROTECHNIQUE INTERNATIONALE

___________
APPAREILS ÉLECTRODOMESTIQUES ET ANALOGUES –

SÉCURITÉ –
Partie 2-73: Règles particulières pour les thermoplongeurs

installés à poste fixe
AVANT-PROPOS
1) La Commission Electrotechnique Internationale (CEI) est une organisation mondiale de normalisation
composée de l'ensemble des comités électrotechniques nationaux (Comités nationaux de la CEI). La CEI a
pour objet de favoriser la coopération internationale pour toutes les questions de normalisation dans les
domaines de l'électricité et de l'électronique. A cet effet, la CEI – entre autres activités – publie des Normes
internationales, des Spécifications techniques, des Rapports techniques, des Spécifications accessibles au
public (PAS) et des Guides (ci-après dénommés "Publication(s) de la CEI"). Leur élaboration est confiée à des
comités d'études, aux travaux desquels tout Comité national intéressé par le sujet traité peut participer. Les
organisations internationales, gouvernementales et non gouvernementales, en liaison avec la CEI, participent
également aux travaux. La CEI collabore étroitement avec l'Organisation Internationale de Normalisation (ISO),
selon des conditions fixées par accord entre les deux organisations.
2) Les décisions ou accords officiels de la CEI concernant les questions techniques représentent, dans la mesure
du possible, un accord international sur les sujets étudiés, étant donné que les Comités nationaux de la CEI
intéressés sont représentés dans chaque comité d’études.
3) Les Publications de la CEI se présentent sous la forme de recommandations internationales et sont agréées
comme telles par les Comités nationaux de la CEI. Tous les efforts raisonnables sont entrepris afin que la CEI
s'assure de l'exactitude du contenu technique de ses publications; la CEI ne peut pas être tenue responsable
de l'éventuelle mauvaise utilisation ou interprétation qui en est faite par un quelconque utilisateur final.
4) Dans le but d'encourager l'uniformité internationale, les Comités nationaux de la CEI s'engagent, dans toute la
mesure possible, à appliquer de façon transparente les Publications de la CEI dans leurs publications
nationales et régionales. Toutes divergences entre toutes Publications de la CEI et toutes publications
nationales ou régionales correspondantes doivent être indiquées en termes clairs dans ces dernières.
5) La CEI 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.
La présente version consolidée de la CEI 60335-2-73 comprend la deuxième édition (2002)
[documents 61/2176/FDIS et 61/2257/RVD] et son amendement 1 (2006) [documents
61/2957/FDIS et 61/2987/RVD].
Le contenu technique de cette version consolidée est donc identique à celui de l'édition de
base et à son amendement; cette version a été préparée par commodité pour l'utilisateur.
Elle porte le numéro d'édition 2.1.
Une ligne verticale dans la marge indique où la publication de base a été modifiée par
l'amendement 1.
La version française de cette norme n’a pas été soumise au vote.

– 6 – 60335-2-73  CEI:2005
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

thermoplongeurs électriques installés à poste fixe.

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 suivant est utilisé:
– paragraphes, tableaux et figures: ceux qui sont numérotés à partir de 101 sont complémentaires à ceux de la
Partie 1;
– notes: à l’exception de celles qui sont dans un nouveau paragraphe ou de celles qui concernent des notes de
la partie 1, les notes sont numérotées à partir de 101, y compris celles des articles ou paragraphes qui sont
remplacés ;
– les annexes supplémentaires sont appelées AA, BB, etc.
NOTE 3 Les caractères d'imprimerie suivants sont utilisés:
– exigences: caractères romains;
– modalités d'essais: caractères italiques;
– notes: petits caractères romains.
Les mots en gras dans le texte sont définis à l'Article 3. Lorsqu'une définition concerne un adjectif, l'adjectif et le
nom associé figurent également en gras.
Les différences suivantes existent dans les pays indiqués ci-après.
– 3.1.9: Le fonctionnement normal est différent (USA).
– 6.1: Les a
...

NORME CEI
INTERNATIONALE IEC
60335-2-73
INTERNATIONAL
Deuxième édition
STANDARD
Second edition
2002-10
Appareils électrodomestiques et analogues –
Sécurité –
Partie 2-73:
Règles particulières pour les thermoplongeurs
installés à poste fixe
Household and similar electrical appliances –
Safety –
Part 2-73:
Particular requirements for fixed
immersion heaters
Numéro de référence
Reference number
CEI/IEC 60335-2-73:2002
Numérotation des publications Publication numbering
Depuis le 1er janvier 1997, les publications de la CEI As from 1 January 1997 all IEC publications are
sont numérotées à partir de 60000. Ainsi, la CEI 34-1 issued with a designation in the 60000 series. For
devient la CEI 60034-1. example, IEC 34-1 is now referred to as IEC 60034-1.
Editions consolidées Consolidated editions
Les versions consolidées de certaines publications de la The IEC is now publishing consolidated versions of its
CEI incorporant les amendements sont disponibles. Par publications. For example, edition numbers 1.0, 1.1
exemple, les numéros d’édition 1.0, 1.1 et 1.2 indiquent and 1.2 refer, respectively, to the base publication,
respectivement la publication de base, la publication de the base publication incorporating amendment 1 and
base incorporant l’amendement 1, et la publication de the base publication incorporating amendments 1
base incorporant les amendements 1 et 2. and 2.
Informations supplémentaires Further information on IEC publications
sur les publications de la CEI
Le contenu technique des publications de la CEI est The technical content of IEC publications is kept
constamment revu par la CEI afin qu'il reflète l'état under constant review by the IEC, thus ensuring that
actuel de la technique. Des renseignements relatifs à the content reflects current technology. Information
cette publication, y compris sa validité, sont dispo- relating to this publication, including its validity, is
nibles dans le Catalogue des publications de la CEI available in the IEC Catalogue of publications
(voir ci-dessous) en plus des nouvelles éditions, (see below) in addition to new editions, amendments
amendements et corrigenda. Des informations sur les and corrigenda. Information on the subjects under
sujets à l’étude et l’avancement des travaux entrepris consideration and work in progress undertaken by the
par le comité d’études qui a élaboré cette publication, technical committee which has prepared this
ainsi que la liste des publications parues, sont publication, as well as the list of publications issued,
également disponibles par l’intermédiaire de: is also available from the following:
• Site web de la CEI (www.iec.ch) • IEC Web Site (www.iec.ch)
• Catalogue des publications de la CEI • Catalogue of IEC publications
Le catalogue en ligne sur le site web de la CEI The on-line catalogue on the IEC web site
(www.iec.ch/searchpub) vous permet de faire des (www.iec.ch/searchpub) enables you to search by a
recherches en utilisant de nombreux critères, variety of criteria including text searches,
comprenant des recherches textuelles, par comité technical committees and date of publication. On-
d’études ou date de publication. Des informations en line information is also available on recently
ligne sont également disponibles sur les nouvelles issued publications, withdrawn and replaced
publications, les publications remplacées ou retirées, publications, as well as corrigenda.
ainsi que sur les corrigenda.
• IEC Just Published • IEC Just Published
Ce résumé des dernières publications parues This summary of recently issued publications
(www.iec.ch/online_news/justpub) est aussi dispo- (www.iec.ch/online_news/justpub) is also available
nible par courrier électronique. Veuillez prendre by email. Please contact the Customer Service
contact avec le Service client (voir ci-dessous) Centre (see below) for further information.
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• Service clients • Customer Service Centre
Si vous avez des questions au sujet de cette If you have any questions regarding this
publication ou avez besoin de renseignements publication or need further assistance, please
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clients:
Email: [e-mail] Email: [e-mail]
Tél: [phone] Tel: [phone]
Fax: [phone] Fax: [phone]
.
NORME CEI
INTERNATIONALE IEC
60335-2-73
INTERNATIONAL
Deuxième édition
STANDARD
Second edition
2002-10
Appareils électrodomestiques et analogues –
Sécurité –
Partie 2-73:
Règles particulières pour les thermoplongeurs
installés à poste fixe
Household and similar electrical appliances –
Safety –
Part 2-73:
Particular requirements for fixed
immersion heaters
 IEC 2002 Droits de reproduction réservés  Copyright - all rights reserved
Aucune partie de cette publication ne peut être reproduite ni No part of this publication may be reproduced or utilized in any
utilisée sous quelque forme que ce soit et par aucun procédé, form or by any means, electronic or mechanical, including
électronique ou mécanique, y compris la photocopie et les photocopying and microfilm, without permission in writing from
microfilms, sans l'accord écrit de l'éditeur. the publisher.
International Electrotechnical Commission, 3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, Switzerland
Telephone: [phone] Telefax: [phone] E-mail: [e-mail] Web: www.iec.ch
CODE PRIX
Commission Electrotechnique Internationale PRICE CODE L
International Electrotechnical Commission
Международная Электротехническая Комиссия
Pour prix, voir catalogue en vigueur
For price, see current catalogue

– 2 – 60335-2-73  CEI:2005
SOMMAIRE
AVANT-PROPOS.4
INTRODUCTION.8

1 Domaine d’application .10
2 Références normatives .12
3 Définitions .12
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 .14
9 Démarrage des appareils à moteur .14
10 Puissance et courant .14
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.16
18 Endurance.16
19 Fonctionnement anormal .16
20 Stabilité et dangers mécaniques .16
21 Résistance mécanique.16
22 Construction.16
23 Conducteurs internes.18
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 .20
32 Rayonnement, toxicité et dangers analogues .20

Annexes .22

Bibliographie .22

60335-2-73  IEC:2005 – 3 –
CONTENTS
FOREWORD.5
INTRODUCTION.9

1 Scope .11
2 Normative references .13
3 Definitions .13
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 .15
9 Starting of motor-operated appliances.15
10 Power input and current.15
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 .17
18 Endurance.17
19 Abnormal operation .17
20 Stability and mechanical hazards .17
21 Mechanical strength .17
22 Construction.17
23 Internal wiring.19
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 .21
32 Radiation, toxicity and similar hazards .21

Annexes .23

Bibliogr
...

IEC 60335-2-73
Edition 2.1 2006-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Household and similar electrical appliances – Safety –
Part 2-73: Particular requirements for fixed immersion heaters

Appareils électrodomestiques et analogues – Sécurité –
Partie 2-73: Règles particulières pour les thermoplongeurs installés à poste fixe

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by

any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either IEC or

IEC's member National Committee in the country of the requester.
If you have any questions about IEC copyright or have an enquiry about obtaining additional rights to this publication,
please contact the address below or your local IEC member National Committee for further information.

Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite
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Si vous avez des questions sur le copyright de la CEI ou si vous désirez obtenir des droits supplémentaires sur cette

publication, utilisez les coordonnées ci-après ou contactez le Comité national de la CEI de votre pays de résidence.

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About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigenda or an amendment might have been published.
ƒ Catalogue of IEC publications: www.iec.ch/searchpub
The IEC on-line Catalogue enables you to search by a variety of criteria (reference number, text, technical committee,…).
It also gives information on projects, withdrawn and replaced publications.
ƒ IEC Just Published: www.iec.ch/online_news/justpub
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The world's leading online dictionary of electronic and electrical terms containing more than 20 000 terms and definitions
in English and French, with equivalent terms in additional languages. Also known as the International Electrotechnical
Vocabulary online.
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normes internationales pour tout ce qui a trait à l'électricité, à l'électronique et aux technologies apparentées.

A propos des publications CEI
Le contenu technique des publications de la CEI est constamment revu. Veuillez vous assurer que vous possédez
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ƒ Catalogue des publications de la CEI: www.iec.ch/searchpub/cur_fut-f.htm
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ƒ Electropedia: www.electropedia.org
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IEC 60335-2-73
Edition 2.1 2006-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Household and similar electrical appliances – Safety –
Part 2-73: Particular requirements for fixed immersion heaters

Appareils électrodomestiques et analogues – Sécurité –
Partie 2-73: Règles particulières pour les thermoplongeurs installés à poste fixe

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CD
CODE PRIX
ICS 91.140.65 ISBN 2-8318-8532-9

– 2 – 60335-2-73  CEI:2005
SOMMAIRE
AVANT-PROPOS.4

INTRODUCTION.8

1 Domaine d’application .10

2 Références normatives.12

3 Définitions .12

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 .14
9 Démarrage des appareils à moteur.14
10 Puissance et courant .14
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.16
18 Endurance.16
19 Fonctionnement anormal .16
20 Stabilité et dangers mécaniques .16
21 Résistance mécanique .16
22 Construction .16
23 Conducteurs internes .18
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.20
32 Rayonnement, toxicité et dangers analogues.20

Annexes .22

Bibliographie.22

60335-2-73  IEC:2002+A1:2006 – 3 –

CONTENTS
FOREWORD.5

INTRODUCTION.9

1 Scope.11

2 Normative references .13

3 Definitions .13

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.15
9 Starting of motor-operated appliances .15
10 Power input and current .15
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 .17
18 Endurance.17
19 Abnormal operation .17
20 Stability and mechanical hazards .17
21 Mechanical strength .17
22 Construction .17
23 Internal wiring.19
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.21
32 Radiation, toxicity and similar hazards.21

Annexes .23

Bibliography.23
...

IEC 60335-2-73 ®
Edition 2.2 2009-11
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Household and similar electrical appliances – Safety –
Part 2-73: Particular requirements for fixed immersion heaters

Appareils électrodomestiques et analogues – Sécurité –
Partie 2-73: Règles particulières pour les thermoplongeurs installés à poste fixe

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form

or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from

either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC
copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or

your local IEC member National Committee for further information.

Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite
ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie

et les microfilms, sans l'accord écrit de l'IEC ou du Comité national de l'IEC du pays du demandeur. Si vous avez des

questions sur le copyright de l'IEC ou si vous désirez obtenir des droits supplémentaires sur cette publication, utilisez
les coordonnées ci-après ou contactez le Comité national de l'IEC de votre pays de résidence.

IEC Central Office Tel.: [phone]
3, rue de Varembé Fax: [phone]
CH-1211 Geneva 20 [e-mail]
Switzerland www.iec.ch
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigenda or an amendment might have been published.

IEC Catalogue - webstore.iec.ch/catalogue Electropedia - www.electropedia.org
The stand-alone application for consulting the entire The world's leading online dictionary of electronic and
bibliographical information on IEC International Standards, electrical terms containing 20 000 terms and definitions in
Technical Specifications, Technical Reports and other English and French, with equivalent terms in 15 additional
documents. Available for PC, Mac OS, Android Tablets and languages. Also known as the International Electrotechnical
iPad. Vocabulary (IEV) online.

IEC publications search - www.iec.ch/searchpub IEC Glossary - std.iec.ch/glossary
The advanced search enables to find IEC publications by a 65 000 electrotechnical terminology entries in English and
variety of criteria (reference number, text, technical French extracted from the Terms and Definitions clause of
committee,…). It also gives information on projects, replaced IEC publications issued since 2002. Some entries have been
and withdrawn publications. collected from earlier publications of IEC TC 37, 77, 86 and

CISPR.
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Stay up to date on all new IEC publications. Just Published IEC Customer Service Centre - webstore.iec.ch/csc
details all new publications released. Available online and If you wish to give us your feedback on this publication or
also once a month by email. need further assistance, please contact the Customer Service
Centre: [e-mail].
A propos de l'IEC
La Commission Electrotechnique Internationale (IEC) est la première organisation mondiale qui élabore et publie des
Normes internationales pour tout ce qui a trait à l'électricité, à l'électronique et aux technologies apparentées.

A propos des publications IEC
Le contenu technique des publications IEC est constamment revu. Veuillez vous assurer que vous possédez l’édition la
plus récente, un corrigendum ou amendement peut avoir été publié.

Catalogue IEC - webstore.iec.ch/catalogue Electropedia - www.electropedia.org
Application autonome pour consulter tous les renseignements
Le premier dictionnaire en ligne de termes électroniques et
bibliographiques sur les Normes internationales,
électriques. Il contient 20 000 termes et définitions en anglais
Spécifications techniques, Rapports techniques et autres
et en français, ainsi que les termes équivalents dans 15
documents de l'IEC. Disponible pour PC, Mac OS, tablettes
langues additionnelles. Egalement appelé Vocabulaire
Android et iPad.
Electrotechnique International (IEV) en ligne.

Recherche de publications IEC - www.iec.ch/searchpub
Glossaire IEC - std.iec.ch/glossary
La recherche avancée permet de trouver des publications IEC
65 000 entrées terminologiques électrotechniques, en anglais
en utilisant différents critères (numéro de référence, texte,
et en français, extraites des articles Termes et Définitions des
comité d’études,…). Elle donne aussi des informations sur les
publications IEC parues depuis 2002. Plus certaines entrées
projets et les publications remplacées ou retirées.
antérieures extraites des publications des CE 37, 77, 86 et

CISPR de l'IEC.
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Restez informé sur les nouvelles publications IEC. Just Service Clients - webstore.iec.ch/csc
Published détaille les nouvelles publications parues. Si vous désirez nous donner des commentaires sur cette
Disponible en ligne et aussi une fois par mois par email. publication ou si vous avez des questions contactez-nous:
[e-mail].
IEC 60335-2-73 ®
Edition 2.2 2009-11
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Household and similar electrical appliances – Safety –

Part 2-73: Particular requirements for fixed immersion heaters

Appareils électrodomestiques et analogues – Sécurité –

Partie 2-73: Règles particulières pour les thermoplongeurs installés à poste fixe

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 91.140.65 ISBN 978-2-8891-0163-4

– 2 – 60335-2-73 © IEC:2002+A1:2006

+A2:2009
CONTENTS
FOREWORD.3

INTRODUCTION.5

1 Scope.6

2 Normative references .7

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.8
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 .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.11
32 Radiation, toxicity and similar hazards.11

Annexes .12

Bibliography.12

60335-2-73 © IEC:2002+A1:2006 – 3 –

+A2:2009
INTERNATIONAL ELECTROTECHNICAL COMMISSION

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HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –

SAFETY –
Part 2-73: Particular requirements for fixed immersion heaters

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