IEC 60335-2-49:2002+AMD1:2008 CSV

Household and similar electrical appliances - Safety - Part 2-49: Particular requirements for commercial electric appliances for keeping food and crockery warm

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. This consolidated version consists of the fourth edition (2002) and its amendment 1 (2008). Therefore, no need to order amendment in addition to this publication.

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

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.  Cette version consolidée comprend la quatrième édition (2002) et son amendement 1 (2008). Il n'est donc pas nécessaire de commander l'amendement avec cette publication.

General Information

• Status: Published
• Publication Date: 24-Jun-2008
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 97.030 - Domestic electrical appliances in general
• Technical Committee: TC 61 - Safety of household and similar electrical appliances
• Current Stage: DELPUB - Deleted Publication
• Completion Date: 03-Nov-2021

Standards Content (Sample)

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
IEC 60335-2-49:2002+A1:2008

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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

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– 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

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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.

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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.

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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.

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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.

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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

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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.

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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.

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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 instruc
...