IEC 60335-2-49:2002
(Main)Household and similar electrical appliances - Safety - Part 2-49: Particular requirements for commercial electric hot cupboards
Household and similar electrical appliances - Safety - Part 2-49: Particular requirements for commercial electric hot cupboards
Deals with the safety of electrically operated commercial hot cupboards not intended for household use. The rated voltage being not more than 250 V for single-phase appliances connected between one phase and neutral, and 480 V for other appliances. Hot cupboards with heated tops, heated display cases, heated crockery dispensers and heated shelves and tables are also within the scope of this standard. The appliances within the scope of this standard are typically used in restaurants, canteens, hospitals and similar commercial enterprises. The electrical part of appliances making use of other forms of energy is also within the scope of this standard.
Appareils électrodomestiques et analogues - Sécurité - Partie 2-49: Règles particulières pour les armoires chauffantes électriques à usage domestique
Traite de la sécurité des armoires chauffantes électriques à usage collectif, qui ne sont pas destinées aux usages domestiques, dont la tension assignée n'est pas supérieure à 250 V pour les appareils monophasés alimentés entre phase et neutre et 480 V pour les autres appareils. Les armoires chauffantes avec dessus chauffants, les comptoirs de distribution chauffants, les distributeurs de vaisselle chaude et les étagères et tables chauffantes sont également compris dans le domaine d'application de la présente norme. Ces appareils sont utilisés, par exemple, dans les restaurants, les cantines, les hôpitaux, et entreprises commerciales similaires. La partie électrique des appareils utilisant d'autres formes d'énergie entre également dans le domaine d'application de la présente norme.
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INTERNATIONAL IEC
STANDARD
60335-2-49
Fourth edition
2002-11
Household and similar electrical appliances –
Safety –
Part 2-49:
Particular requirements for commercial
electric hot cupboards
Appareils électrodomestiques et analogues –
Sécurité –
Partie 2-49:
Règles particulières pour les armoires chauffantes
électriques à usage collectif
Reference number
Publication numbering
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60000 series. For example, IEC 34-1 is now referred to as IEC 60034-1.
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edition numbers 1.0, 1.1 and 1.2 refer, respectively, to the base publication, the
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INTERNATIONAL IEC
STANDARD
60335-2-49
Fourth edition
2002-11
Household and similar electrical appliances –
Safety –
Part 2-49:
Particular requirements for commercial
electric hot cupboards
Appareils électrodomestiques et analogues –
Sécurité –
Partie 2-49:
Règles particulières pour les armoires chauffantes
électriques à usage collectif
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: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmail@iec.ch Web: www.iec.ch
PRICE CODE
Commission Electrotechnique Internationale
R
International Electrotechnical Commission
Международная Электротехническая Комиссия
For price, see current catalogue
– 2 – 60335-2-49 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 . 8
6 Classification . 8
7 Marking and instructions . 8
8 Protection against access to live parts . 9
9 Starting of motor-operated appliances . 9
10 Power input and current.10
11 Heating.10
12 Void .11
13 Leakage current and electric strength at operating temperature .11
14 Transient overvoltages.11
15 Moisture resistance.11
16 Leakage current and electric strength .12
17 Overload protection of transformers and associated circuits.12
18 Endurance .12
19 Abnormal operation.12
20 Stability and mechanical hazards.13
21 Mechanical strength.14
22 Construction .14
23 Internal wiring.15
24 Components .16
25 Supply connection and external flexible cords.16
26 Terminals for external conductors .16
27 Provision for earthing.16
28 Screws and connections .17
29 Clearances, creepage distances and solid insulation .17
30 Resistance to heat and fire .17
31 Resistance to rusting .17
32 Radiation, toxicity and similar hazards .17
Annexes.19
Bibliography.19
Figure 101 – Splash apparatus.18
60335-2-49 IEC:2002(E) – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
SAFETY –
Part 2-49: Particular requirements
for commercial electric hot cupboards
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 subcommittee 61E:
Safety of electrical commercial catering equipment, of IEC technical committee 61: Safety of
household and similar electrical appliances.
This fourth edition cancels and replaces the third edition published in 2000. It constitutes a
technical revision.
The text of this part of IEC 60335 is based on the following documents:
FDIS Report on voting
61E/404/FDIS 61E/416/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 commercial electric hot
cupboards.
– 4 – 60335-2-49 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 of Part 1 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.
– 6.1: Class 01 appliances are allowed (Japan).
– 6.2: For appliances intended to be installed in a kitchen, an appropriate degree of protection against harmful
ingress of water is required according to their height of installation (France).
– 13.2: Leakage current limits are different (Japan).
– Clause 21: For appliances intended to be installed in a kitchen, different values of impact energy are
applicable according to the height of the impact point (France).
A bilingual version of this publication may be issued at a later date.
60335-2-49 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 – 60335-2-49 IEC:2002(E)
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
SAFETY –
Part 2-49: Particular requirements
for commercial electric hot cupboards
1 Scope
This clause of Part 1 is replaced by the following:
This International Standard deals with the safety of electrically operated commercial hot
cupboards not intended for household use, their rated voltage being not more than 250 V for
single-phase appliances connected between one phase and neutral, and 480 V for other
appliances.
Hot cupboards with heated tops, heated display cases, heated crockery dispensers and
heated shelves and tables are also within the scope of this standard.
NOTE 101 These appliances are used, for example in restaurants, canteens, hospitals and similar commercial
enterprises.
The electrical part of appliances making use of other forms of energy is also within the scope
of this standard.
As far as is practicable, this standard deals with the common hazards presented by these
types of appliances.
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, the national water supply authorities and similar authorities;
− for appliances intended to be used outdoors, additional requirements may be necessary.
NOTE 103 This standard does not apply to
− appliances designed exclusively for industrial purposes;
− appliances intended to be used in locations where special conditions prevail, such as the presence of a
corrosive or explosive atmosphere (dust, vapour or gas);
− continuous process appliances for the mass production of food;
− bains-marie (IEC 60335-2-50).
2 Normative references
This clause of Part 1 is applicable except as follows.
Addition:
IEC 60436, Methods for measuring the performance of electric dishwashers
60335-2-49 IEC:2002(E) – 7 –
3 Definitions
This clause of Part 1 is applicable except as follows.
3.1.4 Addition:
NOTE 101 The rated power input is the sum of the power inputs of all the individual elements in the appliance
that can be on at one time; where there are several such combinations possible, that giving the highest power input
is used in determining the rated power input.
3.1.9 Replacement:
normal operation
operation of the appliance under the following conditions
Appliances are operated empty and with any controls intended to be operated by the user set
at the maximum.
If the appliance cannot be operated empty, then the manufacturer's instructions are taken into
account.
Doors, covers or lids, if any, are placed in their intended positions.
Motors incorporated in the appliance are operated in the intended manner under the most
severe conditions that can be expected in normal use taking into account the manufacturer's
instructions.
3.101
hot cupboard
an appliance that is used for maintaining the temperature of hot food and for the warming of
crockery
3.102
heated top
the top surface of a hot cupboard, that is designed to maintain the required temperature. It
may be heated indirectly by the hot cupboard heating elements or directly by separate
heating elements
3.103
heated display case
a hot cupboard in which food is displayed, the heated food being served from the display
3.104
heated crockery dispenser
an appliance designed specifically for the storage, warming and dispensing of plates, etc.
3.105
installation wall
a special fixed construction containing supply facilities for appliances installed in conjunction
with it
4 General requirement
This clause of Part 1 is applicable.
– 8 – 60335-2-49 IEC:2002(E)
5 General conditions for the tests
This clause of Part 1 is applicable except as follows.
5.10 Addition:
Appliances intended for installation in a bank of other appliances and appliances intended to
be fixed to an installation wall are enclosed to obtain protection against electric shock and
harmful ingress of water equivalent to that obtained when installed in accordance with the
instructions provided with the appliance.
NOTE 101 Appropriate enclosures or additional appliances may be needed for test purposes.
5.101 Appliances are tested as heating appliances, even if they incorporate a motor.
5.102 Appliances, when assembled in combination with or incorporating other appliances,
are tested in accordance with the requirements of this standard. The other appliances are
operated simultaneously in accordance with the requirements of the relevant standards.
6 Classification
This clause of Part 1 is applicable except as follows.
6.1 Replacement:
Appliances shall be class I with respect to protection against electric shock.
Compliance is checked by inspection and by the relevant tests.
7 Marking and instructions
This clause of Part 1 is applicable except as follows.
7.1 Addition:
In addition, appliances shall be marked with the water pressure or range of pressures, in
kilopascals (kPa), for appliances intended to be connected to a water supply, unless this is
indicated in the instructions.
7.6 Addition:
[symbol 5021 of IEC 60417-1] equipotentiality
7.12 Addition:
The instructions of appliances provided with wheels or similar means shall also state the
maximum load, in kilograms (kg), of the appliance.
If symbol 5021 of IEC 60417-1 is marked on the appliance its meaning shall be explained.
60335-2-49 IEC:2002(E) – 9 –
7.12.1 Replacement:
The appliance shall be accompanied by instructions detailing any special precautions
necessary for installation. For appliances intended for installation in a bank of other
appliances and appliances intended to be fixed to an installation wall, details of how to
ensure appropriate protection against electric shock and harmful ingress of water shall be
supplied. If the controls of more than one appliance are combined in a separate enclosure,
detailed installation instructions shall be supplied. Instructions for user maintenance, for
example cleaning, shall also be given. They shall include a statement that the appliance is not
to be cleaned with a water jet.
For appliances that are permanently connected to fixed wiring and for which leakage currents
may exceed 10 mA, particularly if disconnected or not used for long periods, or during initial
installation, the instruction sheet shall give recommendations regarding the rating of
protective devices, such as earth leakage relays, to be installed.
Compliance is checked by inspection.
7.12.4 Addition:
The instructions for built-in appliances having a separate control panel for several
appliances shall state that the control panel is only to be connected to the specified
appliances in order to avoid a possible hazard.
7.15 Addition:
When it is not practical to place the marking of fixed appliances so that it is visible after the
appliance has been installed, the relevant information shall also be included in the
instructions for use or on an additional label that can be fixed near the appliance after
installation.
NOTE 1
...
IEC 60335-2-49
Edition 4.0 2002-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Household and similar electrical appliances – Safety –
Part 2-49: Particular requirements for commercial electric hot cupboards
Appareils électrodomestiques et analogues – Sécurité –
Partie 2-49: Règles particulières pour les armoires chauffantes électriques à
usage domestique
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IEC 60335-2-49
Edition 4.0 2002-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Household and similar electrical appliances – Safety –
Part 2-49: Particular requirements for commercial electric hot cupboards
Appareils électrodomestiques et analogues – Sécurité –
Partie 2-49: Règles particulières pour les armoires chauffantes électriques à
usage domestique
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
R
CODE PRIX
ICS 97.030 ISBN 2-8318-7981-7
– 2 – 60335-2-49 © CEI:2002
SOMMAIRE
AVANT-PROPOS.4
INTRODUCTION.8
1 Domaine d’application .10
2 Références normatives.10
3 Définitions .12
4 Prescriptions générales .12
5 Conditions générales d’essais .14
6 Classification.14
7 Marquage et indications .14
8 Protection contre l’accès aux parties actives .18
9 Démarrage des appareils à moteur.18
10 Puissance et courant .18
11 Echauffements .18
12 Vacant.20
13 Courant de fuite et rigidité diélectrique à la température de régime .20
14 Surtensions transitoires.20
15 Résistance à l’humidité.20
16 Courant de fuite et rigidité diélectrique .24
17 Protection contre la surcharge des transformateurs et des circuits associés.24
18 Endurance.24
19 Fonctionnement anormal .24
20 Stabilité et dangers mécaniques .26
21 Résistance mécanique .28
22 Construction .28
23 Conducteurs internes .30
24 Composants .30
25 Raccordement au réseau et câbles souples extérieurs .30
26 Bornes pour conducteurs externes .32
27 Dispositions en vue de la mise à la terre .32
28 Vis et connexions .34
29 Distances dans l'air, lignes de fuite et isolation solide .34
30 Résistance à la chaleur et au feu.34
31 Protection contre la rouille.34
32 Rayonnement, toxicité et dangers analogues.34
Annexes .38
Annexe N (normative) Essai de tenue au cheminement.38
Bibliographie.38
Figure 101 – Appareil d’éclaboussement.36
60335-2-49 © IEC:2002 – 3 –
CONTENTS
FOREWORD.5
INTRODUCTION.9
1 Scope.11
2 Normative references .11
3 Definitions .13
4 General requirement.13
5 General conditions for the tests .15
6 Classification.15
7 Marking and instructions.15
8 Protection against access to live parts.19
9 Starting of motor-operated appliances .19
10 Power input and current .19
11 Heating .19
12 Void.21
13 Leakage current and electric strength at operating temperature.21
14 Transient overvoltages .21
15 Moisture resistance .21
16 Leakage current and electric strength.25
17 Overload protection of transformers and associated circuits .25
18 Endurance.25
19 Abnormal operation .25
20 Stability and mechanical hazards .27
21 Mechanical strength .29
22 Construction .29
23 Internal wiring.31
24 Components .31
25 Supply connection and external flexible cords .31
26 Terminals for external conductors.33
27 Provision for earthing .33
28 Screws and connections .35
29 Clearances, creepage distances and solid insulation .35
30 Resistance to heat and fire.35
31 Resistance to rusting.35
32 Radiation, toxicity and similar hazards.35
Annexes .39
Annex N (normative) Proof tracking test.39
Bibliography.39
Figure 101 – Splash apparatus .37
– 4 – 60335-2-49 © CEI:2002
COMMISSION ÉLECTROTECHNIQUE INTERNATIONALE
____________
APPAREILS ÉLECTRODOMESTIQUES ET ANALOGUES –
SÉCURITÉ –
Partie 2-49: Règles particulières
pour les armoires chauffantes électriques
à usage domestique
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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 sous-comité 61E
de la CEI: Sécurité des appareils électriques à usage des collectivités, du comité d'études 61
de la CEI: Sécurité des appareils électrodomestiques et analogues.
Cette quatrième édition annule et remplace la première édition publiée en 2000. Elle constitue
une révision technique.
Cette version bilingue, publiée en 2005-06, correspond à la version anglaise.
Le texte anglais de cette norme est issu des documents 61E/404/FDIS et 61E/416 /RVD. Le
rapport de vote 61E/416/RVD donne toute information sur le vote ayant abouti à l’approbation
de cette norme.
60335-2-49 © IEC:2002 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
SAFETY –
Part 2-49: Particular requirements
for commercial electric hot cupboards
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 subcommittee 61E:
Safety of electrical commercial catering equipment, of IEC technical committee 61: Safety of
household and similar electrical appliances.
This fourth edition cancels and replaces the third edition published in 2000. It constitutes a
technical revision.
This bilingual version, published in 2005-06, corresponds to the English version.
The text of this part of IEC 60335 is based on the following documents:
FDIS Report on voting
61E/404/FDIS 61E/416/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 – 60335-2-49 © 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 armoires
chauffantes électriques à usage collectif
Lorsqu'un paragraphe particulier de la Partie 1 n'est pas mentionné dans cette partie 2, ce
paragraphe s'applique pour autant qu’il soit 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;
– annexes: 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 de la Partie 1 concerne un
adjectif, l'adjectif et le nom associé figurent également en gras.
Les différences suivantes existent dans les pays indiqués ci-après.
– 6.1: Les appareils de la classe 01 sont autorisés (Japon).
– 6.2: Pour les appareils destinés à être installés dans une cuisine, le degré approprié de protection contre les
effets nuisibles de la pénétration de l'eau dépend de la hauteur d’installation (France).
– 13.2: Les limites du courant de fuite sont différentes (Japon).
– Article 21: Pour les appareils destinés à être installés dans une cuisine, les valeurs d'énergie d’impact
dépendent de la hauteur du point d'impact (France).
Le comité a décidé que le contenu de cette publication ne sera pas modifié avant la date de
maintenance indiquée sur le site web de la CEI sous «http://webstore.iec.ch» dans les
données relatives à la publication recherchée. A cette date, la publication sera
• reconduite;
• supprimée;
• remplacée par une édition révisée, ou
• amendée.
60335-2-49 © IEC:2002 – 7 –
The French version of this standard has not been voted upon.
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 commercial electric hot
cupboards.
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 of Part 1 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 01 appliances are allowed (Japan).
– 6.2: For appliances intended to be installed in a kitchen, an appropriate degree of protection against harmful
ingress of water is required according to their height of installation (France).
– 13.2: Leakage current limits are different (Japan).
– Clause 21: For appliances intended to be installed in a kitchen, different values of impact energy are
applicable according to the height of the impact point (France).
The committee has decided that the contents of this publication will remain unchanged until
the maintenance result date indicated on the IEC web site under "http://webstore.iec.ch" in
the data related to the specific publication. At this date, the publication will be
• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.
– 8 – 60335-2-49 © CEI:2002
INTRODUCTION
Il a été considéré en établissant la présente Norme internationale que l'exécution de ses
dispositions était confiée à des personnes expérimentées et ayant une qualification
appropriée.
Cette norme reconnaît le niveau de protection internationalement accepté contre les risques
électriques, mécaniques, thermiques, liés au feu et au rayonnement des appareils, lorsqu'ils
fonctionnent comme en usage normal en tenant compte des instructions du fabricant. Elle
couvre également les situations anormales auxquelles on peut s'attendre dans la pratique.
Cette norme tient compte autant que possible des exigences de la CEI 60364, de façon à
rester compatible avec les règles d'installation quand l’appareil est raccordé au réseau
d’alimentation. Cependant, des règles nationales d'installation peuvent être différentes.
Si un appareil compris dans le domaine d’application de cette norme comporte également des
fonctions qui sont couvertes par une autre partie 2 de la CEI 60335, la partie 2
correspondante est appliquée à chaque fonction séparément, dans la limite du raisonnable. Si
cela est applicable, on tient compte de l’influence d’une fonction sur les autres fonctions.
Cette norme est une norme de famille de produits traitant de la sécurité d’appareils et a
préséance sur les normes horizontales et génériques couvrant le même sujet.
Un appareil conforme au texte de la présente norme ne sera pas nécessairement jugé
conforme aux principes de sécurité de la norme si, lorsqu'il est examiné et soumis aux essais,
il apparaît qu'il présente d'autres caractéristiques qui compromettent le niveau de sécurité
visé par ces exigences.
Un appareil utilisant des matériaux ou présentant des modes de construction différents de
ceux décrits dans les exigences de cette norme peut être examiné et essayé en fonction de
l'objectif poursuivi par ces exigences et, s'il est jugé pratiquement équivalent, il peut être
estimé conforme aux principes de sécurité de la norme.
60335-2-49 © IEC:2002 – 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.
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.
– 10 – 60335-2-49 © CEI:2002
APPAREILS ÉLECTRODOMESTIQUES ET ANALOGUES –
SÉCURITÉ –
Partie 2-49: Règles particulières
pour les armoires chauffantes électriques
à usage domestique
1 Domaine d’application
L’article de la Partie 1 est remplacé par l’article ci-après:
La présente Norme internationale traite de la sécurité des armoires chauffantes électriques
à usage collectif, qui ne sont pas destinées aux usages domestiques, dont la tension
assignée n'est pas supérieure à 250 V pour les appareils monophasés alimentés entre phase
et neutre et 480 V pour les autres appareils.
Les armoires chauffantes avec dessus chauffants, les comptoirs de distribution
chauffants, les distributeurs de vaisselle chaude et les étagères et tables chauffantes sont
également compris dans le domaine d’application de la présente norme.
NOTE 101 Ces appareils sont utilisés, par exemple, dans les restaurants, les cantines, les hôpitaux, et
entreprises commerciales similaires.
La partie électrique des appareils utilisant d’autres formes d’énergie entre également dans le
domaine d’application de la présente norme.
Dans la mesure du possible, la présente norme traite des risques ordinaires présentés par
ces types d'appareils.
NOTE 102 L’attention est attirée sur le fait que
− pour les appareils destinés à être utilisés dans des véhicules ou à bord de navires ou d'avions, des exigences
supplémentaires peuvent être nécessaires;
− dans de nombreux pays, des exigences supplémentaires sont spécifiées par les organismes nationaux de la
santé publique, par les organismes nationaux responsables de la protection des travailleurs, par les
organismes nationaux responsables de l'alimentation en eau et par des organismes similaires.
− pour les appareils destinés à être utilisés à haute altitude, des exigences supplémentaires peuvent être
nécessaires.
NOTE 103 La présente norme ne s’applique pas
− aux appareils prévus exclusivement pour des usages industriels;
− aux appareils destinés à être utilisés dans des locaux présentant des conditions particulières, telles que la
présence d'une atmosphère corrosive ou explosive (poussières, vapeur ou gaz);
− aux appareils à fonctionnement continu pour la préparation en masse d'aliments;
− aux bains-marie (CEI 60335-2-50).
2 Références normatives
L’article de la Partie 1 est applicable avec l’exception suivante.
Addition:
CEI 60436, Méthodes de mesure de l’aptitude à la fonction des lave-vaisselle électriques
60335-2-49 © IEC:2002 – 11 –
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
SAFETY –
Part 2-49: Particular requirements
for commercial electric hot cupboards
1 Scope
This clause of Part 1 is replaced by the following:
This International Standard deals with the safety of electrically operated commercial hot
cupboards not intended for household use, their rated voltage being not more than 250 V for
single-phase appliances connected between one phase and neutral, and 480 V for other
appliances.
Hot cupboards with heated tops, heated display cases, heated crockery dispensers and
heated shelves and tables are also within the scope of this standard.
NOTE 101 These appliances are used, for example in restaurants, canteens, hospitals and similar commercial
enterprises.
The electrical part of appliances making use of other forms of energy is also within the scope
of this standard.
As far as is practicable, this standard deals with the common hazards presented by these
types of appliances.
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, the national water supply authorities and similar authorities;
− for appliances intended to be used outdoors, additional requirements may be necessary.
NOTE 103 This standard does not apply to
− appliances designed exclusively for industrial purposes;
− appliances intended to be used in locations where special conditions prevail, such as the presence of a
corrosive or explosive atmosphere (dust, vapour or gas);
− continuous process appliances for the mass production of food;
− bains-marie (IEC 60335-2-50).
2 Normative references
This clause of Part 1 is applicable except as follows.
Addition:
IEC 60436, Methods for measuring the performance of electric dishwashers
– 12 – 60335-2-49 © CEI:2002
3 Définitions
L’article de la Partie 1 est applicable avec l’exception suivante.
3.1.4 Addition:
NOTE 101 La puissance assignée est la somme des puissances de tous les éléments individuels de l’appareil
qui peuvent être alimentés simultanément; si plusieurs combinaisons d’éléments sont possibles, celle qui donne la
puissance la plus élevée sert à déterminer la puissance assignée.
3.1.9 Remplacement:
conditions de fonctionnement normal
fonctionnement de l’appareil dans les conditions suivantes
Les appareils sont mis en fonctionnement vides et tous les dispositifs de commande prévus
pour être manœuvrés par l’usager sont réglés au maximum.
Si l’appareil ne peut pas fonctionner vide, les instructions du fabricant sont prises en
considération.
Les portes et couvercles éventuels sont placés dans la position prévue.
Les moteurs incorporés dans l'appareil sont mis en fonctionnement de la manière prévue,
dans les conditions les plus sévères qui peuvent se produire en usage normal, en tenant
compte des instructions du fabricant.
3.101
armoire chauffante
appareil utilisé pour le maintien en température des aliments ou le chauffage de la vaisselle
3.102
dessus chauffant
surface supérieure d’une armoire chauffante conçue pour maintenir la température exigée, qui
peut être chauffée indirectement par les éléments chauffants de l’armoire, ou directement par
des éléments chauffants séparés
3.103
comptoir de distribution chauffant
armoire chauffante dans laquelle la nourriture est exposée pour être ensuite servie chaude à
partir de ce comptoir
3.104
distributeur de vaisselle chaude
appareil conçu spécifiquement pour le stockage, le chauffage et la distribution de vaisselle,
etc.
3.105
mur d'installation
construction fixe spéciale comportant les dispositifs pour alimenter les appareils qui y seront
raccordés
4 Prescriptions générales
L’article de la Partie 1 est applicable.
60335-2-49 © IEC:2002 – 13 –
3 Definitions
This clause of Part 1 is applicable except as follows.
3.1.4 Addition:
NOTE 101 The rated power input is the sum of the power inputs of all the individual elements in the appliance
that can be on at one time; where there are several such combinations possible, that giving the highest power input
is used in determining the rated power input.
3.1.9 Replacement:
normal operation
operation of the appliance under the following conditions
Appliances are operated empty and with any controls intended to be operated by the user set
at the maximum.
If the appliance cannot be operated empty, then the manufacturer's instructions are taken into
account.
Doors, covers or lids, if any, are placed in their intended positions.
Motors incorporated in the appliance are operated in the intended manner under the most
severe conditions that can be expected in normal use taking into account the manufacturer's
instructions.
3.101
hot cupboard
an appliance that is used for maintaining the temperature of hot food and for the warming of
crockery
3.102
heated top
the top surface of a hot cupboard, that is designed to maintain the required temperature. It
may be heated indirectly by the hot cupboard heating elements or directly by separate
heating elements
3.103
heated display case
a hot cupboard in which food is displayed, the heated food being served from the display
3.104
heated crockery dispenser
an appliance designed specifically for the storage, warming and dispensing of plates, etc.
3.105
installation wall
a special fixed construction containing supply facilities for appliances installed in conjunction
with it
4 General requirement
This clause of Part 1 is applicable.
– 14 – 60335-2-49 © CEI:2002
5 Conditions générales d’essais
L’article de la Partie 1 est applicable avec l’exception suivante.
5.10 Addition:
Les appareils destinés à être installés en batterie avec d'autres appareils et les appareils
destinés à être fixés à un mur d'installation sont sous une enveloppe de manière à avoir une
protection contre les chocs électriques et les effets nuisibles de la pénétration de l'eau
équivalente à celle obtenue lorsqu'ils sont installés selon les instructions fournies avec
l'appareil.
NOTE 101 Des enveloppes appropriées ou des appareils supplémentaires peuvent être nécessaires pour les
essais.
5.101 Les appareils sont essayés comme des appareils chauffants même s'ils comportent
un moteur.
5.102 Les appareils, lorsqu’ils sont montés en combinaison avec d’autres appareils ou
lorsqu’ils incorporent d’autres appareils, sont essayés conformément aux exigences de cette
norme. Les autres appareils sont mis en fonctionnement simultanément conformément aux
exigences des normes correspondantes.
6 Classification
L’article de la Partie 1 est applicable avec l’exception suivante.
6.1 Remplacement:
Les appareils doivent être de la classe I en ce qui concerne la protection contre les chocs
électriques.
La vérification est effectuée par examen et par les essais correspondants.
7 Marquage et indications
L’article de la Partie 1 est applicable avec l’exception suivante.
7.1 Addition:
De plus, les appareils doivent porter l'indication de la pression d’eau ou la gamme des
pressions, en kilopascals (kPa), pour les appareils destinés à être reliés à un réseau de
distribution d’eau, à moins que cette indication ne figure dans les instructions.
7.6 Addition:
[symbole 5021 de la CEI 60417-1] équipotentialité
60335-2-49 © IEC:2002 – 15 –
5 General conditions for the tests
This clause of Part 1 is applicable except as follows.
5.10 Addition:
Appliances intended for installation in a bank of other appliances and appliances intended to
be fixed to an installation wall are enclosed to obtain protection against electric shock and
harmful ingress of water equivalent to that obtained when installed in accordance with the
instructions provided with the appliance.
NOTE 101 Appropriate enclosures or additional appliances may be needed for test purposes.
5.101 Appliances are tested as heating appliances, even if they incorporate a motor.
5.102 Appliances, when assembled in combination with or incorporating other appliances,
are tested in accordance with the requirements of this standard. The other appliances are
operated simultaneously in accordance with the requirements of the relevant standards.
6 Classification
This clause of Part 1 is applicable except as follows.
6.1 Replacement:
Appliances shall be class I with respect to protection against electric shock.
Compliance is checked by inspection and by the relevant tests.
7 Marking and instructions
This clause of Part 1 is applicable except as follows.
7.1 Addition:
In addition, appliances shall be marked with the water pressure or range of pressures, in
ki
...
IEC 60335-2-49
Edition 4.1 2008-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Household and similar electrical appliances – Safety –
Part 2-49: Particular requirements for commercial electric appliances for keeping
food and crockery warm
Appareils électrodomestiques et analogues – Sécurité –
Partie 2-49: Règles particulières pour les appareils électriques à usage collectif
destinés à maintenir au chaud les aliments et la vaisselle
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IEC 60335-2-49
Edition 4.1 2008-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Household and similar electrical appliances – Safety –
Part 2-49: Particular requirements for commercial electric appliances for keeping
food and crockery warm
Appareils électrodomestiques et analogues – Sécurité –
Partie 2-49: Règles particulières pour les appareils électriques à usage collectif
destinés à maintenir au chaud les aliments et la vaisselle
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CJ
CODE PRIX
ICS 97.030 ISBN 2-8318-9833-1
– 2 – 60335-2-49 © IEC:2002+A1:2008
CONTENTS
FOREWORD.3
INTRODUCTION.5
1 Scope.6
2 Normative references .6
3 Definitions .7
4 General requirement.8
5 General conditions for the tests .8
6 Classification.9
7 Marking and instructions.9
8 Protection against access to live parts.12
9 Starting of motor-operated appliances .12
10 Power input and current .12
11 Heating .13
12 Void.14
13 Leakage current and electric strength at operating temperature.14
14 Transient overvoltages .14
15 Moisture resistance .14
16 Leakage current and electric strength.15
17 Overload protection of transformers and associated circuits .16
18 Endurance.16
19 Abnormal operation .16
20 Stability and mechanical hazards .17
21 Mechanical strength .18
22 Construction .19
23 Internal wiring.20
24 Components .20
25 Supply connection and external flexible cords .20
26 Terminals for external conductors.21
27 Provision for earthing .21
28 Screws and connections .21
29 Clearances, creepage distances and solid insulation .21
30 Resistance to heat and fire.22
31 Resistance to rusting.22
32 Radiation, toxicity and similar hazards.22
Annexes .24
Annex N (normative) Proof tracking test.24
Bibliography.24
Figure 101 – Splash apparatus .23
60335-2-49 © IEC:2002+A1:2008 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
SAFETY –
Part 2-49: Particular requirements for commercial electric appliances
for keeping food and crockery warm
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 subcommittee 61E:
Safety of electrical commercial catering equipment, of IEC technical committee 61: Safety of
household and similar electrical appliances.
This consolidated version of IEC 60947-6-2 consists of the fourth edition (2002) [documents
61E/404/FDIS and 61E/416/RVD] and its amendment 1 (2008) [documents 61E/617/FDIS and
61E/620/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 4.1.
A vertical line in the margin shows where the base publication has been modified by
amendment 1.
– 4 – 60335-2-49 © IEC:2002+A1:2008
The French version of this standard has not been voted upon.
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 commercial electric hot
cupboards.
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 of Part 1 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 01 appliances are allowed (Japan).
– 6.2: For appliances intended to be installed in a kitchen, an appropriate degree of protection against harmful
ingress of water is required according to their height of installation (France).
– 13.2: Leakage current limits are different (Japan).
– Clause 21: For appliances intended to be installed in a kitchen, different values of impact energy are
applicable according to the height of the impact point (France).
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.
60335-2-49 © 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 – 60335-2-49 © IEC:2002+A1:2008
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
SAFETY –
Part 2-49: Particular requirements
for commercial electric hot cupboards
1 Scope
This clause of Part 1 is replaced by the following:
This International Standard deals with the safety of electrically operated commercial
appliances for keeping food and crockery warm not intended for household use, their rated
voltage being not more than 250 V for single-phase appliances connected between one
phase and neutral, and 480 V for other appliances.
Examples of appliances that are within the scope of this standard are:
– hot cupboards, with or without heated tops;
– heated tops;
– heated display cases;
– heated crockery dispensers;
– heated tables;
– radiant heaters.
NOTE 101 These appliances are used, for example in restaurants, canteens, hospitals and similar commercial
enterprises.
The electrical part of appliances making use of other forms of energy is also within the scope
of this standard.
As far as is practicable, this standard deals with the common hazards presented by these
types of appliances.
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, the national water supply authorities and similar authorities;
− for appliances intended to be used outdoors, additional requirements may be necessary.
NOTE 103 This standard does not apply to
− appliances designed exclusively for industrial purposes;
− appliances intended to be used in locations where special conditions prevail, such as the presence of a
corrosive or explosive atmosphere (dust, vapour or gas);
− continuous process appliances for the mass production of food;
− bains-marie (IEC 60335-2-50).
2 Normative references
This clause of Part 1 is applicable except as follows.
60335-2-49 © IEC:2002+A1:2008 – 7 –
Addition:
IEC 60436, Methods for measuring the performance of electric dishwashers
3 Definitions
This clause of Part 1 is applicable except as follows.
3.1.4 Addition:
NOTE 101 The rated power input is the sum of the power inputs of all the individual elements in the appliance
that can be on at one time; where there are several such combinations possible, that giving the highest power input
is used in determining the rated power input.
3.1.9 Replacement:
normal operation
operation of the appliance under the following conditions
Appliances are operated empty and with any controls intended to be operated by the user set
at the maximum.
If the appliance cannot be operated empty, then the manufacturer's instructions are taken into
account.
Doors, covers or lids, if any, are placed in their intended positions.
Motors incorporated in the appliance are operated in the intended manner under the most
severe conditions that can be expected in normal use taking into account the manufacturer's
instructions.
Appliances incorporating induction heating sources are operated with the induction
crockery placed on induction trays. All tray supports are loaded, but partial up to full load
shall be possible.
All controls are set to maximum, and the induction crockery is half-filled with initially cold
water. Covers (cloches) are in their position.
The appliances consist of several units, which can form up to three separated modules; they
are connected together during operation. These units are the heating module with the
induction heating source, the rack with the coil carriers and the enclosure with the
supports for the induction trays including the induction crockery.
3.101
hot cupboard
an appliance that is used for maintaining the temperature of hot food and for the warming of
crockery
3.102
heated top
the top surface of a hot cupboard, that is designed to maintain the required temperature. It
may be heated indirectly by the hot cupboard heating elements or directly by separate
heating elements
3.103
heated display case
a hot cupboard in which food is displayed, the heated food being served from the display
– 8 – 60335-2-49 © IEC:2002+A1:2008
3.104
heated crockery dispenser
an appliance designed specifically for the storage, warming and dispensing of plates, etc.
3.105
installation wall
a special fixed construction containing supply facilities for appliances installed in conjunction
with it
3.106
heated table
appliance designed for warm-holding on the surface
3.107
radiant heater
stationary appliance for keeping food and crockery warm by means of radiant heat
NOTE A part of the appliance can be swivelling.
3.108
heating unit
any part of an appliance that fulfils an independent cooking or heating function
3.109
induction heating source
heating source that operates by inducing eddy currents in induction crockery
3.110
coil carrier
insulation device containing the induction winding
3.111
induction crockery
crockery suitable to be heated by induction for heating up or keeping food warm
3.112
induction tray
tray adapted to induction crockery, as recommended by the manufacturer
4 General requirement
This clause of Part 1 is applicable.
5 General conditions for the tests
This clause of Part 1 is applicable except as follows.
5.10 Addition:
Appliances intended for installation in a bank of other appliances and appliances intended to
be fixed to an installation wall are enclosed to obtain protection against electric shock and
harmful ingress of water equivalent to that obtained when installed in accordance with the
instructions provided with the appliance.
NOTE 101 Appropriate enclosures or additional appliances may be needed for test purposes.
60335-2-49 © IEC:2002+A1:2008 – 9 –
5.101 Appliances are tested as heating appliances, even if they incorporate a motor.
5.102 Appliances, when assembled in combination with or incorporating other appliances,
are tested in accordance with the requirements of this standard. The other appliances are
operated simultaneously in accordance with the requirements of the relevant standards.
6 Classification
This clause of Part 1 is applicable except as follows.
6.1 Replacement:
Appliances shall be class I with respect to protection against electric shock.
Compliance is checked by inspection and by the relevant tests.
6.2 Addition:
Appliances normally used on a table shall be at least IPX3. Other appliances shall be at least
IPX4.
7 Marking and instructions
This clause of Part 1 is applicable except as follows.
7.1 Addition:
In addition, appliances shall be marked with the water pressure or range of pressures, in
kilopascals (kPa), for appliances intended to be connected to a water supply, unless this is
indicated in the instructions.
Appliances incorporating induction heating sources shall also be marked with:
– the operating frequency or operating frequency range, in kilohertz (kHz);
– the total power input of all the induction heating units that can operate simultaneously, in
watts (W) or kilowatts (kW), unless this is indicated in the instructions;
– the total power input of all the non-induction heating units that can operate
simultaneously, in watts (W) or kilowatts (kW), unless this is indicated in the instructions.
NOTE 101 The power input to be marked or declared is the highest power input that any switch arrangement will allow.
Any cover giving access to live parts at a working voltage exceeding 250 V shall be marked
with symbol IEC 60417-5036 (2002-10), or with the following warning:
WARNING – DANGEROUS VOLTAGE
Covers giving access to induction coils shall be marked with symbol IEC 60417-5140
(2003-04), or with the following warning:
CAUTION – MAGNETIC FIELD
NOTE 102 If it is not possible to mark these warnings on the cover, they may be placed close to the cover-
retaining screws.
– 10 – 60335-2-49 © IEC:2002+A1:2008
7.6 Addition:
[symbol IEC 60417-5041 (2002-10)] caution, hot surface
[symbol IEC 60417-5140 (2003-04)] non-ionizing electromagnetic radiation
7.12 Addition:
The instructions of appliances provided with wheels or similar means shall also state the
maximum load, in kilograms (kg), of the appliance.
If symbols IEC 60417-5021 (2002-10), IEC 60417-5041 (2002-10) and IEC 60417-5140 (2003-04)
are marked on the appliance, their meaning shall be explained.
The instructions for appliances incorporating induction heating sources shall include the
substance of the following warning and information:
– WARNING: If the surface of coil carriers changes to darker colour or shows cracks,
immediately disconnect the appliance from the supply.
– metallic objects such as kitchen utensils, cutlery, etc., shall not be placed on the induction
tray within zones provided for the induction crockery since they could get hot;
– only use induction crockery and induction trays recommended by the manufacturer;
– users with heart pacemakers should consult with the manufacturer (unless specific details
are given).
Modification:
The instruction concerning persons (including children) with reduced physical, sensory or
mental capabilities, or lack of experience and knowledge is not applicable.
7.12.1 Replacement:
The appliance shall be accompanied by instructions detailing any special precautions
necessary for installation. For appliances intended for installation in a bank of other
appliances and appliances intended to be fixed to an installation wall, details of how to
ensure appropriate protection against electric shock and harmful ingress of water shall be
supplied. If the controls of more than one appliance are combined in a separate enclosure,
detailed installation instructions shall be supplied. Instructions for user maintenance, for
example cleaning, shall also be given. They shall include a statement that the appliance is not
to be cleaned with a water jet.
For appliances incorporating swivelling radiant heaters, the installation instructions shall
include detailed information concerning the area of swivelling with regard to the surrounding
conditions. Information shall be given on how to limit the swivelling area by the installer.
The operation of appliances incorporating induction heating sources requires an increased
instruction of the personnel. In addition, the instructions shall state that any repairs shall be
carried out only by persons trained or recommended by the manufacturer.
60335-2-49 © IEC:2002+A1:2008 – 11 –
For appliances that are permanently connected to fixed wiring and for which leakage currents
may exceed 10 mA, particularly if disconnected or not used for long periods, or during initial
installation, the instruction sheet shall give recommendations regarding the rating of
protective devices, such as earth leakage relays, to be installed.
Compliance is checked by inspection.
7.12.4 Addition:
The instructions for built-in appliances having a separate control panel for several
appliances shall state that the control panel is only to be connected to the specified
appliances in order to avoid a possible hazard.
7.15 Addition:
When it is not practical to place the marking of fixed appliances so that it is visible after the
appliance has been installed, the relevant information shall also be included in the
instructions for use or on an additional label that can be fixed near the appliance after
installation.
NOTE 101 An example of such a fixed appliance is a built-in appliance.
For appliances incorporating induction heating sources in modular design, the additional
label shall be fixed to the heating module (generator).
7.101 Equipotential bonding terminals shall be marked with symbol 5021 of IEC 60417-1.
These markings shall not be placed on screws, removable washers or other parts that can be
removed when conductors are being connected.
Compliance is checked by inspection.
7.102 If a swivel radiant heater can be swung over adjacent areas or appliances, the
instructions for use and installation shall indicate this range. If the temperature rise of the top
of the adjacent area or appliance exceeds 65 K during the tests of Clause 11, or 125 K during
the tests of Clause 19, the installation instructions provided by the manufacturer shall include
the substance of the following warning, which shall also be included on a non-permanent label
attached to the appliance:
WARNING: If this radiant heater is positioned adjacent to other areas or appliances, it is
recommended that, within the range of the radiation, these areas or
appliances be made of non-combustible material, otherwise, they shall be
clad with a non-combustible heat-insulating material, and attention is to be
paid to fire prevention regulations.
Compliance is checked by inspection.
7.103 Food warming areas of radiant heaters adjacent to the appliance shall be
permanently marked if the temperature rise during Clause 11 exceeds 65 K. This marking is
not required if the swivelling area is between a bank of other appliances.
Compliance is checked by inspection.
7.104 The side of the radiant heater case facing the user (front side) shall be permanently
marked with symbol IEC 60417-5041 (2002-10).
Compliance is checked by inspection.
– 12 – 60335-2-49 © IEC:2002+A1:2008
7.105 The zones on induction trays where the induction crockery is to be placed shall be
marked permanently, e.g. by an appropriate design.
Compliance is checked by inspection.
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 applicable except as follows.
9.101 Fan motors providing a cooling effect in order to comply with the requirements of
Clause 11 shall start under all voltage conditions that may occur in use.
Compliance is checked by starting the motor three times at a voltage equal to 0,85 times
rated voltage, the motor being at room temperature at the beginning of the test.
The motor is started each time under the conditions occurring at the beginning of normal
operation or, for automatic appliances, at the beginning of the normal cycle of operation, the
motor being allowed to come to rest between successive starts. For appliances provided with
motors having other than centrifugal starting switches, this test is repeated at a voltage equal
to 1,06 times rated voltage.
In all cases, the motor shall start and it shall function in such a way that safety is not affected,
and the overload protective devices of the motor shall not operate.
NOTE The supply source is such that, during the test, the drop in voltage does not exceed 1 %.
10 Power input and current
This clause of Part 1 is applicable except as follows.
10.1 Modification:
Instead of the first paragraph of the requirement, the following applies:
The power input of appliances without induction heating sources, at rated voltage and at
normal operating temperature, shall not deviate from the rated power input by more than the
deviation shown in Table 1.
The power input of appliances having only induction heating sources, at rated voltage and at
normal operating temperature, shall not deviate from the rated power input by more than 10 %.
The measurement is made before the controls are adjusted to the reduced setting.
For appliances incorporating induction and non-induction heating sources, the following
applies:
The power input of the induction heating sources and the non-induction heating sources is
measured separately, in each case using a combination of heating units that can be on at
the same time to give the highest power input. For the induction heating sources, the
measurement is made before the controls are adjusted to the reduced setting.
60335-2-49 © IEC:2002+A1:2008 – 13 –
For induction heating sources, the power input so measured shall not deviate from the
power input marked or declared by the manufacturer (see 7.1) by more than 10 %. For non-
induction heating sources, the power input so measured shall not deviate from the power
input marked or declared by the manufacturer (see 7.1) by more than the deviation shown in
Table 1 for heating appliances.
In addition, the power input of the appliance when the induction and non-induction heating
sources are operated simultaneously shall not deviate from the rated power input by more
than 10 %.
Addition:
NOTE 101 For appliances having more than one heating unit, the total power input may be determined by
measuring the power input of each heating unit separately (see also 3.1.4).
11 Heating
This clause of Part 1 is applicable except as follows.
11.1 Addition:
For radiant heaters, 11.101 applies.
11.2 Addition:
Appliances intended to be fixed to the floor and appliances with a mass greater than 40 kg
and not provided with rollers, castors or similar means are installed in accordance with the
manufacturer's instructions. If no instructions are given, these appliances are considered as
appliances normally placed on the floor.
11.3 Addition:
NOTE 101 If the measurements can be unduly influenced by emissions from an induction heating source, i.e.
the magnetic field, this must be taken into account.
In general, the use of thermocouples is not recommended because of the expected faulty heating-up of the
thermocouples caused by the induction heating source. For example, the temperature rise of the induction
heating source can be determined by using a platinum resistance, preferably of high resistance, with twisted
connecting wires. The platinum resistances are placed on the hottest point of the winding so as to influence as little
as possible the temperature to be measured.
11.4 Replacement:
The non-induction heating units of the appliance are operated under normal operation at
1,15 times the power input marked or declared.
Induction heating units are operated simultaneously and supplied separately at the most
unfavourable voltage between 0,94 times minimum rated voltage and 1,06 times maximum
rated voltage.
If it is not possible to switch on all heating elements or induction heating sources at the
same time, the test is made with each of the combinations that the switch arrangement will
allow, the highest load possible with each switching arrangement being in circuit.
If the appliance is provided with a control that limits the total power input, the test is made
with whichever combination of heating units as may be selected by the control imposes the
most severe condition.
If the temperature rise limits of motors, transformers or electronic circuits are exceeded, the
test is repeated with the appliance supplied at 1,06 times rated voltage. In this case only the
temperature rises of motors, transformers or electronic circuits are measured.
– 14 – 60335-2-49 © IEC:2002+A1:2008
11.7 Replacement:
Appliances incorporating induction heating sources are operated at maximum setting of the
controls for one cycle, which consists of a heating-up phase and a keeping warm phase.
Appliances without induction heating sources are operated until steady conditions are
established.
NOTE 101 The duration of the test on non-induction appliances may consist of more than one cycle of operation.
11.8 Addition:
NOTE 101 The crockery itself is regarded as functional surface.
11.101 For radiant heaters, the temperature rise limit of 65 K applies to the areas, including
walls, which are reached by the radiation. If this temperature rise limit is exceeded, the
requirements of 7.102 apply.
12 Void
13 Leakage current and electric strength at operating temperature
This clause of Part 1 is applicable except as follows.
13.2 Modification:
Instead of the permissible leakage current for stationary class I appliances, the following
applies:
− for cord and plug connected appliances 1 mA per kW rated power input of the
appliance with a maximum of 10 mA
− for other appliances 1 mA per kW rated power input of the
appliance with no maximum
14 Transient overvoltages
This clause of Part 1 is applicable.
15 Moisture resistance
This clause of Part 1 is applicable except as follows.
15.1.1 Addition:
In addition, IPX0, IPX1, IPX2, IPX3 and IPX4 appliances are subjected for 5 min to the
following splash test.
The apparatus shown in Figure 101 is used. During the test, the water pressure is so regulated
that the water splashes up 150 mm above the bottom of the bowl. The bowl is placed on the floor
for appliances normally used on the floor. For all other appliances, on a horizontal support 50 mm
below the lowest edge of the appliance, the bowl is so moved around as to splash the appliance
from all directions. Care is taken that the appliance is not hit by the direct jet.
15.1.2 Modification:
Appliances normally used on a table are placed on a support having dimensions that are
15 cm ± 5 cm in excess of those of the orthogonal projection of the appliance on the support.
60335-2-49 © IEC:2002+A1:2008 – 15 –
15.2 Replacement:
Appliances shall be constructed so that spillage of liquid in normal use does not affect their
electrical insulation.
Compliance is checked by the following test:
Appliances with type X attachment, except those having a specially prepared cord, are fitted
with the lightest permissible type of flexible cable or cord of the smallest cross-sectional area
specified in 26.6 and other appliances are tested as delivered.
Appliances provided with an appliance inlet are tested with or without an appropriate
connector in position, whichever is the more unfavourable.
Detachable parts are removed.
A litre of cold water containing approximately 1 % NaCl is poured steadily over a period of
1 min on to the centre of any heated surface.
NOTE 101 Crockery dispensers are not tested.
The appliance shall then withstand the electric strength test of 16.3, and inspection shall
show that there is no trace of water on the insulation that could result in a reduction of
clearances and creepage distances below the values specified in Clause 29.
15.3 Addition:
NOTE 101 If it is not possible to place the whole appliance in the humidity cabinet, parts containing electrical
components are tested separately, taking into account the conditions that occur in the appliance.
15.101 Appliances that are provided with a tap intended for filling or cleaning shall be
constructed so that the water from the tap cannot come into contact with live parts.
Compliance is checked by the following test.
The tap is fully opened for 1 min with the appliance connected to a water supply having the
maximum water pressure indicated by the manufacturer. Tiltable and movable parts, including
lids, are tilted or placed in the most unfavourable positions. Swivelling outlets of water taps
are so positioned as to direct water on to those parts that will give the most unfavourable
result. Immediately following this treatment the appliance shall withstand an electric strength
test as specified in 16.3.
16 Leakage current and electric strength
This clause of Part 1 is applicable except as follows.
16.2 Modification:
Instead of the permissible leakage current for stationary class I appliances, the following
applies:
− for cord and plug connected appliances 1 mA per kW rated power i
...
IEC 60335-2-49 ®
Edition 4.2 2017-07
CONSOLIDATED
VERSION
VERSION
CONSOLIDÉE
colour
inside
Household and similar electrical appliances – Safety –
Part 2-49: Particular requirements for commercial electric hot cupboards
appliances for keeping food and crockery warm
Appareils électrodomestiques et analogues – Sécurité –
Partie 2-49: Règles particulières pour les armoires chauffantes appareils
électriques à usage domestique collectif destinés à maintenir au chaud
les aliments et la vaisselle
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IEC 60335-2-49 ®
Edition 4.2 2017-07
CONSOLIDATED
VERSION
VERSION
CONSOLIDÉE
colour
inside
Household and similar electrical appliances – Safety –
Part 2-49: Particular requirements for commercial electric hot cupboards
appliances for keeping food and crockery warm
Appareils électrodomestiques et analogues – Sécurité –
Partie 2-49: Règles particulières pour les armoires chauffantes appareils
électriques à usage domestique collectif destinés à maintenir au chaud
les aliments et la vaisselle
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 97.030 ISBN 978-2-8322-4644-3
IEC 60335-2-49 ®
Edition 4.2 2017-07
REDLINE VERSION
VERSION REDLINE
colour
inside
Household and similar electrical appliances – Safety –
Part 2-49: Particular requirements for commercial electric hot cupboards
appliances for keeping food and crockery warm
Appareils électrodomestiques et analogues – Sécurité –
Partie 2-49: Règles particulières pour les armoires chauffantes appareils
électriques à usage domestique collectif destinés à maintenir au chaud
les aliments et la vaisselle
– 2 – IEC 60335-2-49:2002+AMD1:2008
+AMD2:2017 CSV IEC 2017
CONTENTS
FOREWORD . 4
INTRODUCTION . 7
1 Scope . 8
2 Normative references . 9
3 Terms and definitions . 9
4 General requirement . 11
5 General conditions for the tests . 11
6 Classification . 11
7 Marking and instructions . 11
8 Protection against access to live parts . 14
9 Starting of motor-operated appliances . 15
10 Power input and current . 15
11 Heating . 16
12 Void. 18
13 Leakage current and electric strength at operating temperature . 18
14 Transient overvoltages . 18
15 Moisture resistance . 18
16 Leakage current and electric strength . 20
17 Overload protection of transformers and associated circuits . 20
18 Endurance . 20
19 Abnormal operation . 20
20 Stability and mechanical hazards . 22
21 Mechanical strength . 23
22 Construction . 23
23 Internal wiring . 24
24 Components . 24
25 Supply connection and external flexible cords . 25
26 Terminals for external conductors . 25
27 Provision for earthing . 25
28 Screws and connections . 26
29 Clearances, creepage distances and solid insulation . 27
30 Resistance to heat and fire . 27
31 Resistance to rusting . 27
32 Radiation, toxicity and similar hazards . 27
Annexes . 31
Annex N (normative) Proof tracking test . 31
Annex P (informative) Guidance for the application of this standard to appliances
used in tropical climates . 32
Bibliography . 33
Figure 101 – Splash apparatus . 28
+AMD2:2017 CSV IEC 2017
Figure 102 – Identification of surfaces for temperature measurement . 29
Figure 103 – Probe for measuring surface temperatures . 30
Table 101 – Maximum temperature rises for specified external accessible surfaces
under normal operating conditions . 17
Table 102 – Assembling torques for screwed connections providing earthing continuity . 26
– 4 – IEC 60335-2-49:2002+AMD1:2008
+AMD2:2017 CSV IEC 2017
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
SAFETY –
Part 2-49: Particular requirements
for commercial electric hot cupboards appliances
for keeping food and crockery warm
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 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
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.
DISCLAIMER
This Consolidated version is not an official IEC Standard and has been prepared for
user convenience. Only the current versions of the standard and its amendment(s)
are to be considered the official documents.
This Consolidated version of IEC 60335-2-49 bears the edition number 4.2. It consists of
the fourth edition (2002-11) [documents 61E/404/FDIS and 61E/416/RVD], its
amendment 1 (2008-04) [documents 61E/617/FDIS and 61E/620/RVD] and its
amendment 2 (2017-07) [documents 61/5363/FDIS and 61/5391/RVD]. The technical
content is identical to the base edition and its amendments.
+AMD2:2017 CSV IEC 2017
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.
This part of International Standard IEC 60335 has been prepared by IEC subcommittee 61E:
Safety of electrical commercial catering equipment, of IEC technical committee 61: Safety of
household and similar electrical appliances.
This fourth edition constitutes a technical revision.
The French version of this standard has not been voted upon.
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 commercial electric hot
cupboards.
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 of Part 1 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 01 appliances are allowed (Japan).
– 6.2: For appliances intended to be installed in a kitchen, an appropriate degree of protection against harmful
ingress of water is required according to their height of installation (France).
– 13.2: Leakage current limits are different (Japan).
– Clause 21: For appliances intended to be installed in a kitchen, different values of impact energy are
applicable according to the height of the impact point (France).
– 6 – IEC 60335-2-49:2002+AMD1:2008
+AMD2:2017 CSV IEC 2017
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 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.
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.
+AMD2:2017 CSV IEC 2017
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.
– 8 – IEC 60335-2-49:2002+AMD1:2008
+AMD2:2017 CSV IEC 2017
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
SAFETY –
Part 2-49: Particular requirements
for commercial electric hot cupboards appliances
for keeping food and crockery warm
1 Scope
This clause of Part 1 is replaced by the following:
This International Standard deals with the safety of electrically operated commercial hot
cupboards appliances for keeping food and crockery warm not intended for household and
similar use, their rated voltage being not more than 250 V for single-phase appliances
connected between one phase and neutral, and 480 V for other appliances.
Hot cupboards with heated tops, heated display cases, heated crockery dispensers and
heated shelves and tables are also within the scope of this standard.
Examples of appliances that are within the scope of this standard are:
– hot cupboards, with or without heated tops;
– heated tops;
– heated display cases;
– heated crockery dispensers;
– heated tables;
– radiant heaters.
NOTE 101 These appliances are used for processing food and/or rethermalising it, for example in kitchens of
restaurants, canteens, hospitals and similar in commercial enterprises such as bakeries, butcheries, etc.
The electrical part of appliances making use of other forms of energy is also within the scope
of this standard.
As far as is practicable, this standard deals with the common hazards presented by these
types of appliances.
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, the national water supply authorities and similar authorities;
− for appliances intended to be used outdoors, additional requirements may be necessary.
NOTE 103 This standard does not apply to
− appliances designed exclusively for industrial purposes;
− appliances intended to be used in locations where special conditions prevail, such as the presence of a
corrosive or explosive atmosphere (dust, vapour or gas);
− appliances for continuous process appliances for the mass production of food;
− bains-marie (IEC 60335-2-50).
+AMD2:2017 CSV IEC 2017
2 Normative references
This clause of Part 1 is applicable except as follows.
Addition:
IEC 60436, Methods for measuring the performance of electric dishwashers
IEC 60584-1, Thermocouples – Part 1: EMF specifications and tolerances
ISO 898-1, Mechanical properties of fasteners made of carbon steel and alloy steel – Part 1:
Bolts, screws and studs with specified property classes – Coarse thread and fine pitch thread
ISO 3506-1, Mechanical properties of corrosion-resistant stainless steel fasteners – Part 1:
Bolts, screws and studs
ISO 3506-2, Mechanical properties of corrosion-resistant stainless steel fasteners – Part 2:
Nuts
ISO 3506-3, Mechanical properties of corrosion-resistant stainless steel fasteners – Part 3:
Set screws and similar fasteners not under tensile stress
ISO 3506-4, Mechanical properties of corrosion-resistant stainless steel fasteners – Part 4:
Tapping screws
3 Terms and definitions
This clause of Part 1 is applicable except as follows.
3.1.4 Addition:
NOTE 101 The rated power input is the sum of the power inputs of all the individual elements in the appliance
that can be on at one time; where there are several such combinations possible, that giving the highest power input
is used in determining the rated power input.
3.1.9 Replacement:
normal operation
operation of the appliance under the following conditions
Appliances are operated empty and with any controls intended to be operated by the user set
at the maximum.
If the appliance cannot be operated empty, then the manufacturer's instructions are taken into
account.
Doors, covers or lids, if any, are placed in their intended positions.
Motors incorporated in the appliance are operated in the intended manner under the most
severe conditions that can be expected in normal use taking into account the manufacturer's
instructions.
Appliances incorporating induction heating sources are operated with the induction
crockery placed on induction trays. All tray supports are loaded, but partial up to full load
shall be possible.
All controls are set to maximum, and the induction crockery is half-filled with initially cold
water. Covers (cloches) are in their position.
– 10 – IEC 60335-2-49:2002+AMD1:2008
+AMD2:2017 CSV IEC 2017
The appliances consist of several units, which can form up to three separated modules; they
are connected together during operation. These units are the heating module with the
induction heating source, the rack with the coil carriers and the enclosure with the
supports for the induction trays including the induction crockery.
3.101
hot cupboard
an appliance that is used for maintaining the temperature of hot food and for the warming of
crockery
3.102
heated top
the top surface of a hot cupboard, that is designed to maintain the required temperature. It
may be heated indirectly by the hot cupboard heating elements or directly by separate
heating elements
3.103
heated display case
a hot cupboard in which food is displayed, the heated food being served from the display
3.104
heated crockery dispenser
an appliance designed specifically for the storage, warming and dispensing of plates, etc.
3.105
installation wall
a special fixed construction containing supply facilities for appliances installed in conjunction
with it
3.106
heated table
appliance designed for warm-holding on the surface
3.107
radiant heater
stationary appliance for keeping food and crockery warm by means of radiant heat
NOTE A part of the appliance can be swivelling.
3.108
heating unit
any part of an appliance that fulfils an independent cooking or heating function
3.109
induction heating source
heating source that operates by inducing eddy currents in induction crockery
3.110
coil carrier
insulation device containing the induction winding
3.111
induction crockery
crockery suitable to be heated by induction for heating up or keeping food warm
3.112
induction tray
tray adapted to induction crockery, as recommended by the manufacturer
+AMD2:2017 CSV IEC 2017
3.113
functional surface
surface that is intentionally heated by an internal heat source and has to be hot to carry out
the function for which the appliance is intended
Note 1 to entry: An example is the heated sheath of a tubular heating element.
3.114
adjacent surface
surface adjacent to a functional surface and which can become hot through conduction
4 General requirement
This clause of Part 1 is applicable.
5 General conditions for the tests
This clause of Part 1 is applicable except as follows.
5.10 Addition:
Appliances intended for installation in a bank of other appliances and appliances intended to
be fixed to an installation wall are enclosed to obtain protection against electric shock and
harmful ingress of water equivalent to that obtained when installed in accordance with the
instructions provided with the appliance.
NOTE 101 Appropriate enclosures or additional appliances may be needed for test purposes.
5.101 Appliances are tested as heating appliances, even if they incorporate a motor.
5.102 Appliances, when assembled in combination with or incorporating other appliances,
are tested in accordance with the requirements of this standard. The other appliances are
operated simultaneously in accordance with the requirements of the relevant standards.
6 Classification
This clause of Part 1 is applicable except as follows.
6.1 Replacement:
Appliances shall be class I with respect to protection against electric shock or
class II.
Compliance is checked by inspection and by the relevant tests.
6.2 Addition:
Appliances normally used on a table shall be at least IPX3. Other appliances shall be at least
IPX4.
7 Marking and instructions
This clause of Part 1 is applicable except as follows.
– 12 – IEC 60335-2-49:2002+AMD1:2008
+AMD2:2017 CSV © IEC 2017
7.1 Addition:
In addition, appliances shall be marked with the water pressure or range of pressures, in
kilopascals (kPa), for appliances intended to be connected to a water supply, unless this is
indicated in the instructions.
Appliances incorporating induction heating sources shall also be marked with:
– the operating frequency or operating frequency range, in kilohertz (kHz);
– the total power input of all the induction heating units that can operate simultaneously, in
watts (W) or kilowatts (kW), unless this is indicated in the instructions;
– the total power input of all the non-induction heating units that can operate
simultaneously, in watts (W) or kilowatts (kW), unless this is indicated in the instructions.
NOTE 101 The power input to be marked or declared is the highest power input that any switch arrangement will allow.
Covers giving access to induction coils shall be marked with symbol IEC 60417-5140
(2003-04), or with the following warning:
CAUTION – MAGNETIC FIELD
NOTE 102 If it is not possible to mark these warnings on the cover, they may be placed close to the cover-
retaining screws.
If appliances have external accessible surfaces, for which temperature rise limits are
specified in Table 101 and for which the provisions of footnote b to Table 101 apply, then the
appliance shall be marked with symbol IEC 60417-5041 (2002-10), or with the substance of
the following:
CAUTION: Hot surfaces.
7.6 Addition:
[symbol 5021 of IEC 60417-1] equipotentiality
[symbol IEC 60417-5041 (2002-10)] caution, hot surface
[symbol IEC 60417-5140 (2003-04)] non-ionizing electromagnetic radiation
7.12 Addition:
The instructions of appliances provided with wheels or similar means shall also state the
maximum load, in kilograms (kg), of the appliance.
If any of the symbols 5021 of IEC 60417-1 IEC 60417-5021 (2002-10), IEC 60417-5041
(2002-10) and IEC 60417-5140 (2003-04) is marked on the appliance, its meaning shall be
explained.
The instructions for appliances incorporating induction heating sources shall include the
substance of the following warning and information:
– WARNING: If the surface of coil carriers changes to darker colour or shows cracks,
immediately disconnect the appliance from the supply.
– metallic objects such as kitchen utensils, cutlery, etc., shall not be placed on the induction
tray within zones provided for the induction crockery since they could get hot;
+AMD2:2017 CSV © IEC 2017
– only use induction crockery and induction trays recommended by the manufacturer;
– users with heart pacemakers should consult with the manufacturer (unless specific details
are given).
The instructions shall include the substance of the following:
These appliances are intended to be used for commercial applications, for example in
kitchens of restaurants, canteens, hospitals and in commercial enterprises such as bakeries,
butcheries, etc., but not for continuous mass production of food.
If the manufacturer wants to limit the use of the appliance to less than the above, this has to
be clearly stated in the instructions.
Modification:
The instruction concerning persons (including children) with reduced physical, sensory or
mental capabilities, or lack of experience and knowledge is not applicable.
7.12.1 Replacement:
The appliance shall be accompanied by instructions detailing any special precautions
necessary for installation. For appliances intended for installation in a bank of other
appliances and appliances intended to be fixed to an installation wall, details of how to
ensure appropriate protection against electric shock and harmful ingress of water shall be
supplied. If the controls of more than one appliance are combined in a separate enclosure,
detailed installation instructions shall be supplied. Instructions for user maintenance, for
example cleaning, shall also be given. They shall include a statement that the appliance is not
to be cleaned with a water jet or a steam cleaner.
For appliances incorporating swivelling radiant heaters, the installation instructions shall
include detailed information concerning the area of swivelling with regard to the surrounding
conditions. Information shall be given on how to limit the swivelling area by the installer.
The operation of appliances incorporating induction heating sources requires an increased
instruction of the personnel. In addition, the instructions shall state that any repairs shall be
carried out only by persons trained or recommended by the manufacturer.
For class I appliances that are permanently connected to fixed wiring and for which leakage
currents may exceed 10 mA, particularly if disconnected or not used for long periods, or
during initial installation, the instruction sheet shall give recommendations regarding the
rating of protective devices, such as earth leakage relays, to be installed.
Compliance is checked by inspection.
7.12.4 Addition:
The instructions for built-in appliances having a separate control panel for several
appliances shall state that the control panel is only to be connected to the specified
appliances in order to avoid a possible hazard.
7.12.9 Not applicable.
7.14 Addition:
The height of the triangle used with symbol IEC 60417-5041 (2002-10) shall be at least
15 mm.
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+AMD2:2017 CSV IEC 2017
7.15 Addition:
When it is not practical to place the marking of fixed appliances so that it is visible after the
appliance has been installed, the relevant information shall also be included in the
instructions for use or on an additional label that can be fixed near the appliance after
installation.
NOTE 101 An example of such a fixed appliance is a built-in appliance.
For appliances incorporating induction heating sources in modular design, the additional
label shall be fixed to the heating module (generator).
The marking specified for external accessible surfaces shall be visible when the appliance is
operated as in normal use, including when actuating any switch, adjusting any control or
opening a lid or door. It shall not be placed on a functional surface or adjacent surface.
7.101 Equipotential bonding terminals shall be marked with symbol 5021 of IEC 60417-1.
These markings shall not be placed on screws, removable washers or other parts that can be
removed when conductors are being connected.
Compliance is checked by inspection.
7.102 If a swivel radiant heater can be swung over adjacent areas or appliances, the
instructions for use and installation shall indicate this range. If the temperature rise of the top
of the adjacent area or appliance exceeds 65 K during the tests of Clause 11, or 125 K during
the tests of Clause 19, the installation instructions provided by the manufacturer shall include
the substance of the following warning, which shall also be included on a non-permanent label
attached to the appliance:
WARNING: If this radiant heater is positioned adjacent to other areas or appliances, it is
recommended that, within the range of the radiation, these areas or
appliances be made of non-combustible material, otherwise, they shall be
clad with a non-combustible heat-insulating material, and attention is to be
paid to fire prevention regulations.
Compliance is checked by inspection.
7.103 Food warming areas of radiant heaters adjacent to the appliance shall be
permanently marked if the temperature rise during Clause 11 exceeds 65 K. This marking is
not required if the swivelling area is between a bank of other appliances.
Compliance is checked by inspection.
7.104 The side of the radiant heater case facing the user (front side) shall be permanently
marked with symbol IEC 60417-5041 (2002-10).
Compliance is checked by inspection.
7.105 The zones on induction trays where the induction crockery is to be placed shall be
marked permanently, e.g. by an appropriate design.
Compliance is checked by inspection.
8 Protection against access to live parts
This clause of Part 1 is applicable.
+AMD2:2017 CSV IEC 2017
9 Starting of motor-operated appliances
This clause of Part 1 is applicable except as follows.
9.101 Fan motors providing a cooling effect in order to comply with the requirements of
Clause 11 shall start under all voltage conditions that may occur in use.
Compliance is checked by starting the motor three times at a voltage equal to 0,85 times
rated voltage, the motor being at room temperature at the beginning of the test.
The motor is started each time under the conditions occurring at the beginning of normal
operation or, for automatic appliances, at the beginning of the normal cycle of operation, the
motor being allowed to come to rest between successive starts. For appliances provided with
motors having other than centrifugal starting switches, this test is repeated at a voltage equal
to 1,06 times rated voltage.
In all cases, the motor shall start and it shall function in such a way that safety is not affected,
and the overload protective devices of the motor shall not operate.
NOTE The supply source is such that, during the test, the drop in voltage does not exceed 1 %.
10 Power input and current
This clause of Part 1 is applicable except as follows.
10.1 Modification:
Instead of the first paragraph of the requirement, the following applies:
The power input of appliances without induction heating sources, at rated voltage and at
normal operating temperature, shall not deviate from the rated power input by more than the
deviation shown in Table 1.
The power input of appliances having only induction heating sources, at rated voltage and
at normal operating temperature, shall not deviate from the rated power input by more than
10 %.
The measurement is made before the controls are adjusted to the reduced setting.
For appliances incorporating induction and non-induction heating sources, the following
applies:
The power input of the induction heating sources and the non-induction heating sources is
measured separately, in each case using a combination of heating units that can be on at
the same time to give the highest power input. For the induction heating sources, the
measurement is made before the controls are adjusted to the reduced setting.
For induction heating sources, the power input so measured shall not deviate from the
power input marked or declared by the manufacturer (see 7.1) by more than 10 %. For non-
induction heating sources, the power input so measured shall not deviate from the power
input marked or declared by the manufacturer (see 7.1) by more than the deviation shown in
Table 1 for heating appliances.
In addition, the power input of the appliance when the induction and non-induction heating
sources are operated simultaneously shall not deviate from the rated power input by more
than 10 %.
– 16
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