IEC 60335-2-47:2002+AMD1:2008 CSV

Household and similar electrical appliances - Safety - Part 2-47: Particular requirements for commercial electric boiling pans

Deals with the safety of electrically operated commercial boiling pans 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. Appliances which are within the scope of this standard are typically used in restaurants, canteens, hospitals and commercial enterprises such as bakeries, butcheries,etc. The electrical part of appliances making use of other forms of energy is also witin 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.

General Information

• Status: Published
• Publication Date: 14-Jul-2008
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 97.040.20 - Cooking ranges, working tables, ovens and similar appliances
• 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 60335-2-47
Edition 4.1 2008-07
INTERNATIONAL
STANDARD


Household and similar electrical appliances – Safety –
Part 2-47: Particular requirements for commercial electric boiling pans



IEC 60335-2-47:2002+A1:2008(E)

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IEC 60335-2-47
Edition 4.1 2008-07
INTERNATIONAL
STANDARD


Household and similar electrical appliances – Safety –
Part 2-47: Particular requirements for commercial electric boiling pans


INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
CH
ICS 97.040.20 ISBN 2-8318-9864-1
® Registered trademark of the International Electrotechnical Commission

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– 2 – 60335-2-47 © IEC:2002+A1:2008(E)
CONTENTS
INTRODUCTION.5
1 Scope.6
2 Normative references .6
3 Definitions .6
4 General requirement.8
5 General conditions for the tests .8
6 Classification.8
7 Marking and instructions.8
8 Protection against access to live parts.10
9 Starting of motor-operated appliances .10
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 .12
15 Moisture resistance .12
16 Leakage current and electric strength.13
17 Overload protection of transformers and associated circuits .13
18 Endurance.13
19 Abnormal operation .13
20 Stability and mechanical hazards .14
21 Mechanical strength .14
22 Construction .15
23 Internal wiring.17
24 Components .18
25 Supply connection and external flexible cords .18
26 Terminals for external conductors.18
27 Provision for earthing .19
28 Screws and connections .19
29 Clearances, creepage distances and solid insulation .19
30 Resistance to heat and fire.19
31 Resistance to rusting.19
32 Radiation, toxicity and similar hazards.19

Annexes .21

Bibliography.21

Figure 101 – Splash apparatus .20

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60335-2-47 © IEC:2002+A1:2008(E) – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________

HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
SAFETY –

Part 2-47: Particular requirements
for commercial electric boiling pans



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 60335-2-47 consists of the fourth edition (2002) [documents
61E/403/FDIS and 61E/415/RVD] and its amendment 1 (2008) [documents 61E/586/FDIS and
61E/590/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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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
boiling pans.
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).
– 16.2: 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.

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

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60335-2-47 © IEC:2002+A1:2008(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.

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HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
SAFETY –

Part 2-47: Particular requirements
for commercial electric boiling pans



1 Scope
This clause of Part 1 is replaced by the following.
This International Standard deals with the safety of electrically operated commercial boiling
pans 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.
NOTE 101 These appliances are used, for example, in restaurants, canteens, hospitals and 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;
− in many countries additional requirements are specified for pressure appliances.

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;
2 Normative references
This clause of Part 1 is applicable.
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.

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3.1.9 Replacement:
normal operation
operation of the appliance under the following conditions
The appliance is filled with water at 15 °C ± 5 °C to the indicated level.
Appliances with more than one programme are operated with the most severe programme. In
addition, any control intended to be operated by the user is set at maximum until the water
boils or the operating temperature is reached. The control is then adjusted to the lowest
setting that maintains boiling or the operating temperature. Lids and covers are in position
and closed.
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
boiling pan
an appliance in which liquids contained in a vessel are heated to boiling point as part of a
cooking process. The pressure within the vessel can exceed atmospheric pressure. The
vessel may be fixed or tilting
3.102
atmospheric boiling pan
a boiling pan in which the pressure within the vessel does not differ significantly from
atmospheric pressure
3.103
jacketed boiling pan
an appliance having a double-walled vessel, the space between the inner and outer walls
containing a heat transfer medium that is heated by heating elements
3.104
dual purpose boiling pan
an appliance incorporating two vessels, the inner one being removable. The appliance may be
used with or without the removable vessel
3.105
unjacketed boiling pan
an appliance in which heating of the contents of the vessel is achieved by means other than
via a heat transfer jacket
3.106
rated pressure
the maximum working pressure assigned by the manufacturer to the pressurized parts of the
appliance
3.107
indicated level
a mark on the appliance to indicate the maximum liquid level for correct operation
3.108
installation wall
a special fixed construction containing supply facilities for appliances installed in conjunction
with it

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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.
5.5 Addition:
Tests are carried out with the vessel in the position of normal use for cooking.
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.
5.103 Tests on dual purpose boiling pans are carried out with or without the inner vessel,
whichever imposes the more severe condition, taking into account the manufacturer's
instructions.
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.

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60335-2-47 © IEC:2002+A1:2008(E) – 9 –
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;
− the rated pressure, in kilopascals (kPa), on pressurized parts of the appliance.
7.6 Addition:
[symbol 5021 of IEC 60417-1] equipotentiality

7.10 Addition:
Devices controlling the tilting process of appliances with tilting parts shall be clearly marked
to show the direction of movement.
7.12 Addition:
The instructions of boiling pans except atmospheric boiling pans shall include the
substance of the following warning.
WARNING: Do not open drain cocks or other emptying devices until the pressure has
been reduced to approximately atmospheric pressure.
If symbol 5021 of IEC 60417-1 is marked on the appliance its meaning shall be explained.
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 instructions 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.

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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 Vessels shall be marked with an indicated level.
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 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.
11.2 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.

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60335-2-47 © IEC:2002+A1:2008(E) – 11 –
11.4 Replacement:
Appliances are operated under normal operation such that the total power input of the
appliance is 1,15 times rated power input. If it is not possible to switch on all heating
elements 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.
NOTE 101 See also 11.7.
11.7 Replacement:
Appliances are operated until steady conditions are established.
NOTE 101 The duration of the test may consist of more than one cycle of operation.
Agitator motors are operated continuously unless provided with a timer, in which case they
are operated for the maximum time allowed by the timer, or until steady conditions are
established, whichever is shorter.
Tilting motors are operated immediately after the appliance has reached steady conditions, for
one full cycle of operation (one cycle being from the fully up position to the fully down position
and back to the fully up position).
Lifting motors are similarly operated, but for three such cycles.
11.8 Addition:
During the test the pressure relief device shall not operate.
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

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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 f
...