IEC 60335-2-42:2002+AMD1:2008 CSV

Household and similar electrical appliances - Safety - Part 2-42: Particular requirements for commercial electric forced convection ovens, steam cookers and steam-convection ovens

IEC 60335-2-42:2002+A1:2008 deals with the safety of electrically operated commercial forced convection ovens, steam cookers, steam-convection ovens and, exclusive of any other use, steam generators, 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 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 within the scope of this standard. This consolidated version consists of the fifth edition (2002) and its amendment 1 (2008). Therefore, no need to order amendment in addition to this publication.

Appareils électrodomestiques et analogues - Sécurité - Partie 2-42: Règles particulières pour les fours électriques à convection forcée, les cuiseurs à vapeur électriques et les fours combinés vapeur-convection électriques à usage collectif

La CEI 60335-2-42:2002+A1:2008 traite de la sécurité des fours à convection forcée, des cuiseurs à vapeur, des fours combinés vapeur-convection et, à l'exclusion de toute autre utilisation, des générateurs de vapeur électriques à usage collectif qui ne sont pas destinés à un usage domestique, dont la tension assignée n'est pas supérieure à 250 V pour les appareils monophasés alimentés entre phase et neutre et à 480 V pour les autres appareils. Les appareils compris dans le domaine d'application de la présente norme, on peut citer les appareils utilisés dans les restaurants, les cantines, les hôpitaux et les entreprises artisanales, telles que les boulangeries, les boucheries, etc. 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 cinquième édition (2002) e son amendement 1 (2008). Il n'est donc pas nécessaire de commander l'amendement avec cette publication.

General Information

• Status: Published
• Publication Date: 30-Aug-2009
• 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: 05-Nov-2021

Standards Content (Sample)

IEC 60335-2-42
®
Edition 5.1 2009-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Household and similar electrical appliances – Safety –
Part 2-42: Particular requirements for commercial electric forced convection
ovens, steam cookers and steam-convection ovens

Appareils électrodomestiques et analogues – Sécurité –
Partie 2-42: Règles particulières pour les fours électriques à convection forcée,
les cuiseurs à vapeur électriques et les fours combinés vapeur-convection
électriques à usage collectif
IEC 60335-2-42:2002+A1:2008

---------------------- Page: 1 ----------------------
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IEC 60335-2-42
®
Edition 5.1 2009-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Household and similar electrical appliances – Safety –
Part 2-42: Particular requirements for commercial electric forced convection
ovens, steam cookers and steam-convection ovens

Appareils électrodomestiques et analogues – Sécurité –
Partie 2-42: Règles particulières pour les fours électriques à convection forcée,
les cuiseurs à vapeur électriques et les fours combinés vapeur-convection
électriques à usage collectif

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CJ
CODE PRIX
ICS 97.040.20 ISBN 978-2-88910-158-0
® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale

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– 2 – 60335-2-42 © IEC:2002+A1:2008
CONTENTS
FOREWORD.3
INTRODUCTION.5
1 Scope.6
2 Normative references .6
3 Definitions .6
4 General requirement.8
5 General conditions for the tests .9
6 Classification.9
7 Marking and instructions.9
8 Protection against access to live parts.11
9 Starting of motor-operated appliances .11
10 Power input and current .11
11 Heating .12
12 Void.13
13 Leakage current and electric strength at operating temperature.13
14 Transient overvoltages .13
15 Moisture resistance .13
16 Leakage current and electric strength.15
17 Overload protection of transformers and associated circuits .15
18 Endurance.15
19 Abnormal operation .15
20 Stability and mechanical hazards .16
21 Mechanical strength .18
22 Construction .18
23 Internal wiring.20
24 Components .21
25 Supply connection and external flexible cords .21
26 Terminals for external conductors.22
27 Provision for earthing .22
28 Screws and connections .22
29 Clearances, creepage distances and solid insulation .22
30 Resistance to heat and fire.22
31 Resistance to rusting.23
32 Radiation, toxicity and similar hazards.23

Annexes .25
Annex N (normative) Proof tracking test.25


Bibliography.25

Figure 101 – Splash apparatus .24
Figure 102 – Warning sign against danger of scalding .24

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60335-2-42 © IEC:2002+A1:2008 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________

HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
SAFETY –

Part 2-42: Particular requirements for commercial electric forced
convection ovens, steam cookers and steam-convection ovens

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
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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 60335-2-42 consists of the fifth edition (2002) [documents
61E/402/FDIS and 61E/414/RVD] and its amendment 1 (2008) [documents 61E/618/FDIS and
61E/621/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 5.1.
A vertical line in the margin shows where the base publication has been modified by
amendment 1.
This bilingual version (2005-04) replaces the English version.
The French version of this standard has not been voted upon.

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– 4 – 60335-2-42 © IEC:2002+A1:2008
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
forced convection ovens, steam cookers and steam-convection ovens.
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.
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 the amendment 1 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 publication using a colour printer.

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60335-2-42 © 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 2-42: Particular requirements for commercial electric forced
convection ovens, steam cookers and steam-convection ovens



1 Scope
This clause of Part 1 is replaced by the following.
This International Standard deals with the safety of electrically operated commercial forced
convection ovens, steam cookers, steam-convection ovens and, exclusive of any other
use, steam generators, 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;
– microwave ovens (IEC 60335-2-90);
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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60335-2-42 © IEC:2002+A1:2008 – 7 –
3.1.9 Replacement:
normal operation
operation of the appliance under the following conditions
ƒ Dry heat mode
The appliance is operated with all the shelves or the shelf trolley in position according to the
manufacturer's instructions but with no load. The controls are set so that the mean value
of the temperature over the thermostat cycle at the geometric centre of each usable space in
the interior of the oven is maintained at 220 °C ± 4 °C. Stepped controls are set so that this
temperature is 220 °C ± 15 °C.
For ovens that are unable to attain a temperature of 220 °C, the controls are set at the
maximum.
For ovens that are capable of attaining temperatures in excess of 270 °C, the controls are set
so that the mean value of the temperature is 50 °C ± 4 °C below the maximum temperature
attainable.
ƒ Steaming only mode
The appliance is operated in accordance with the manufacturer's instructions with all controls
intended to be operated by the user adjusted to their maximum setting until reaching
operating temperature. They are then readjusted, if possible, to the lowest setting that
maintains that temperature.
Appliances with steam generators intended to be filled by hand or by a manually operated
tap are filled to the indicated level on the steam generator.
Appliances with steam generators intended to be filled automatically are connected to a
water supply having the pressure designated by the manufacturer. Where the manufacturer
specifies a range of pressures, the pressure is adjusted to give the most unfavourable
conditions.
The incoming water is maintained at
– 15 °C ± 5 °C in the case of appliances intended for connection to a cold water supply;
– 60 °C ± 5 °C or the temperature indicated in the instruction sheet, whichever is the higher,
in the case of appliances intended for connection to a hot water supply only.
NOTE 101 If the appliance is intended for connection to either a hot or cold water supply, the temperature of the
water is that which gives the most unfavourable results.
Lids, doors, and covers are in position and closed.
The cooking compartment of the appliance contains a water load, initially at 15 °C ± 5 °C,
comprising 0,5 l/kg of the manufacturer's declared maximum food load. The water load is
evenly distributed between the shelves or pans.
NOTE 102 Since pans may be perforated to allow for circulation of steam, the water load may be contained in
suitable containers evenly distributed over the shelves or pans.
ƒ Combination mode
The appliance is operated as for the steaming only mode but with the forced convection fan/s
and elements for heating the cooking compartment on and the temperature controls set as
for the dry heat mode.
In all the above cases, 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.

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– 8 – 60335-2-42 © IEC:2002+A1:2008
3.101
forced convection oven
an appliance intended for the cooking of food by heated air that is circulated by mechanical
means within the cooking compartment. The pressure within the cooking compartment
does not differ significantly from atmospheric pressure
3.102
steam cooker
an appliance intended for the cooking of food only by means of direct steam contact. The
pressure within the cooking compartment can exceed atmospheric pressure
3.103
atmospheric steam cooker
an appliance in which the pressure within the cooking compartment does not differ
significantly from atmospheric pressure
3.104
steam-convection oven
an appliance intended for the cooking of food either by means of direct steam contact or by
heated air circulated by mechanical means within the cooking compartment or by a
combination of these two modes. The pressure within the cooking compartment does not
differ significantly from atmospheric pressure
3.105
rated pressure
the maximum working pressure of steam cookers and steam generators assigned by the
manufacturer to the pressurized parts of the appliance
3.106
steam generator
that part of the appliance designed specifically for the generation of steam for exclusive use in
a cooking compartment
NOTE The steam generator may be either combined within the cooking compartment, remote from the cooking
compartment but contained within the same casing or function as a separate unit providing steam for one or more
cooking compartments.
3.107
cooking compartment
that part of the appliance in which the cooking or food heating process takes place
3.108
indicated level
a mark on the appliance or steam generator to indicate the maximum liquid level for correct
operation
3.109
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.

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60335-2-42 © IEC:2002+A1:2008 – 9 –
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 aga
...