IEC 60335-2-49:2000

Safety of household and similar electrical appliances - Part 2-49: Particular requirements for commercial electric hot cupboards

Deals with the safety of electric hot cupboards. Hot cupboards with heated tops, heated display cases, heated crockery dispensers, and heated shelves and tables are covered. They are not intended for household use. As examples, they are used in restaurants, canteens, and hospitals. Their rated voltage is not more than 250 V for single-phase appliances and 480 V for other appliances. The electrical part of appliances making use of other energy heat sources is covered.

General Information

• Status: Published
• Publication Date: 15-Mar-2000
• ICS: 97.030 - Domestic electrical appliances in general
• Technical Committee: TC 61 - Safety of household and similar electrical appliances
• Current Stage: DELPUB - Deleted Publication
• Start Date: 28-Nov-2002
• Completion Date: 26-Oct-2025

Relations

• Revised: IEC 60335-2-49:2002 - Household and similar electrical appliances - Safety - Part 2-49: Particular requirements for commercial electric hot cupboards
• Effective Date: 05-Sep-2023
• Revises: IEC 60335-2-49:1995/AMD2:1998 - Amendment 2 - Safety of household and similar electrical appliances - Part 2-49: Particular requirements for commercial electric hot cupboards
• Effective Date: 05-Sep-2023

Standards Content (Sample)

INTERNATIONAL IEC
STANDARD
60335-2-49
Third edition
2000-03
Safety of household and
similar electrical appliances –
Part 2-49:
Particular requirements for
commercial electric hot cupboards
Sécurité des appareils électrodomestiques et analogues –
Partie 2-49:
Règles particulières pour les armoires chauffantes électriques
à usage collectif
Reference number
Numbering
As from 1 January 1997 all IEC publications are issued with a designation in the
60000 series.
Consolidated publications
Consolidated versions of some IEC publications including amendments are

available. For example, edition numbers 1.0, 1.1 and 1.2 refer, respectively, to the
base publication, the base publication incorporating amendment 1 and the base

publication incorporating amendments 1 and 2.

Validity of this publication
The technical content of IEC publications is kept under constant review by the IEC,
thus ensuring that the content reflects current technology.
Information relating to the date of the reconfirmation of the publication is available
in the IEC catalogue.
Information on the subjects under consideration and work in progress undertaken
by the technical committee which has prepared this publication, as well as the list
of publications issued, is to be found at the following IEC sources:
• IEC web site*
•
Catalogue of IEC publications
Published yearly with regular updates
(On-line catalogue)*
• IEC Bulletin
Available both at the IEC web site* and as a printed periodical
Terminology, graphical and letter symbols
For general terminology, readers are referred to IEC 60050: International
Electrotechnical Vocabulary (IEV).
For graphical symbols, and letter symbols and signs approved by the IEC for
general use, readers are referred to publications IEC 60027: Letter symbols to be
used in electrical technology, IEC 60417: Graphical symbols for use on equipment.
Index, survey and compilation of the single sheets and IEC 60617: Graphical symbols
for diagrams.
* See web site address on title page.

INTERNATIONAL IEC
STANDARD
60335-2-49
Third edition
2000-03
Safety of household and
similar electrical appliances –
Part 2-49:
Particular requirements for
commercial electric hot cupboards
Sécurité des appareils électrodomestiques et analogues –
Partie 2-49:
Règles particulières pour les armoires chauffantes électriques
à usage collectif
 IEC 2000  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 Geneva, Switzerland
Telefax: [phone] e-mail: [e-mail] IEC web site http://www.iec.ch
Commission Electrotechnique Internationale
PRICE CODE
R
International Electrotechnical Commission
For price, see current catalogue

– 2 – 60335-2-49  IEC:2000(E)

CONTENTS
Page
FOREWORD . 3

Clause
1 Scope . 5

2 Definitions. 5

3 General requirement . 6

4 General conditions for the tests . 6
5 Void . 7
6 Classification . 7
7 Marking and instructions. 7
8 Protection against access to live parts. 9
9 Starting of motor-operated appliances . 9
10 Power input and current . 9
11 Heating . 9
12 Void . 10
13 Leakage current and electric strength at operating temperature . 10
14 Void . 10
15 Moisture resistance . 10
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. 15
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 Creepage distances, clearances and distances through insulation . 17
30 Resistance to heat, fire and tracking. 17
31 Resistance to rusting. 17
32 Radiation, toxicity and similar hazards . 17
Annex A (normative) Normative references. 19
Figure 101 – Splash apparatus . 18

60335-2-49  IEC:2000(E) – 3 –

INTERNATIONAL ELECTROTECHNICAL COMMISSION

____________
SAFETY OF HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –

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.
International Standard IEC 60335-2-49 has been prepared by subcommittee 61E: Safety of
electrical commercial catering equipment, of IEC technical committee 61: Safety of household
and similar electrical appliances.
It forms the third edition of IEC 60335-2-49 and replaces the second edition, published in 1995,
its amendment 1 (1996) and amendment 2 (1998).
The text of this standard is based on the second edition, amendments 1 and 2 and the

following documents:
FDIS Report on voting
61E/350/FDIS 61E/363/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.

– 4 – 60335-2-49  IEC:2000(E)

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 third edition (1991) of that standard.

This part 2 supplements or modifies the corresponding clauses in IEC 60335-1, so as to
convert it into the IEC standard: Safety requirements for commercial electric hot cupboards.

Where a particular subclause of part 1 is not mentioned in this part 2, that subclause applies
as far as is reasonable. Where this standard states "addition", "modification" or "replacement",

the relevant text in part 1 is to be adapted accordingly.

NOTE 1 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 2.
NOTE 2 Subclauses, figures and notes which are additional to those in part 1 are numbered starting from 101.
A bilingual version of this standard may be issued at a later date.

60335-2-49  IEC:2000(E) – 5 –

SAFETY OF HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –

Part 2-49: Particular requirements for commercial electric hot cupboards

1 Scope
This clause of part 1 is replaced by:

This standard deals with the safety of electrically operated 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 1 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.
So far as is practicable, this standard deals with the common hazards presented by these types
of appliances.
NOTE 2 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;
− for appliances intended to be used in tropical countries, special 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.
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 Definitions
This clause of part 1 is applicable except as follows.
2.2.4 Addition:
NOTE The rated power input is the sum of the power inputs of all the individual elements in the appliance which
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.

– 6 – 60335-2-49  IEC:2000(E)

2.2.9 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 which can be expected in normal use taking into account the manufacturer's
instructions.
2.2.101
hot cupboard
an appliance which is used for maintaining the temperature of hot food and for the warming of
crockery
2.2.102
heated top
the top surface of a hot cupboard, which is designed to maintain the required temperature. It
may be heated indirectly by the hot cupboard heating elements or directly by separate heating
elements
2.2.103
heated display case
a hot cupboard in which food is displayed, the heated food being served from the display
2.2.104
heated crockery dispenser
an appliance designed specifically for the storage, warming and dispensing of plates, etc.
2.2.105
installation wall
a special fixed construction containing supply facilities for appliances installed in conjunction
with it
3 General requirement
This clause of part 1 is applicable except as follows.
Addition:
NOTE 101 The d.c. component in the appliance neutral is limited (Australia).
4 General conditions for the tests
This clause of part 1 is applicable except as follows.

60335-2-49  IEC:2000(E) – 7 –

4.10 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 Appropriate enclosures or additional appliances may be needed for test purposes.

4.101 Appliances are tested as heating appliances, even if they incorporate a motor.

4.102 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.
If a part of the appliance or the whole appliance is intended to be used for different functions
covered by different standards, the relevant standard is applied to each function separately, as
far as is reasonable.
5 Void
6 Classification
This clause of part 1 is applicable except as follows.
6.1 Replacement:
Appliances shall be of class I with respect to protection against electric shock.
Compliance is checked by inspection and by the relevant tests.
NOTE Class 0I appliances are allowed (Japan).
6.2 Addition:
NOTE 101 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).

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 instruction sheet.

– 8 – 60335-2-49  IEC:2000(E)

7.6 Addition:
Add the following symbol:
*
equipotentiality (IEC 60417-5021-a)

7.12 Addition:
The instruction sheet of appliances provided with wheels or similar means shall also state the

maximum load, in kilograms, of the appliance.
7.12.1 Replacement:
The appliance shall be accompanied by an instruction sheet 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.
For appliances which 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, i.e. earth leakage relays, to be installed.
If the appliance is constructed so that it is not protected against water jets, clear and detailed
instructions for the user shall be delivered together with the appliance. It shall be stated in the
instructions that this appliance shall not be cleaned with a water jet.
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 which can be fixed near the appliance after installation.
NOTE An example of such a fixed appliance is a built-in appliance.
7.101 Equipotential bonding terminals shall be indicated by the equipotentiality symbol
(see 7.6).
_________
*
See IEC 60417-1:1998, Graphical symbols for use on equipment – Part 1: Overview and application, and
IEC 60417-2:1998, Graphical symbols for use on equipment – Part 2: Symbol originals.

60335-2-49  IEC:2000(E) – 9 –

These indications shall not be placed on screws, removable washers or other parts which can
be removed when conductors are being connected.

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
9.1 Fan motors providing a cooling effect in order to comply with the requirements of
clause 11 shall start under all voltage conditions which 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 Addition:
NOTE 101 For appliances having more than on
...