IEC 60335-2-50:2002
(Main)Household and similar electrical appliances - Safety - Part 2-50: Particular requirements for commercial electric bains-marie
Household and similar electrical appliances - Safety - Part 2-50: Particular requirements for commercial electric bains-marie
Deals with the safety of electrically operated commercial bains-marie 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. 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.
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Standards Content (Sample)
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Household and similar electrical appliances –
Safety –
Part 2-50:
Particular requirements for commercial
electric bains-marie
Appareils électrodomestiques et analogues –
Sécurité –
Partie 2-50:
Règles particulières pour les bains-marie
électriques à usage collectif
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INTERNATIONAL IEC
STANDARD
60335-2-50
Fourth edition
2002-11
Household and similar electrical appliances –
Safety –
Part 2-50:
Particular requirements for commercial
electric bains-marie
Appareils électrodomestiques et analogues –
Sécurité –
Partie 2-50:
Règles particulières pour les bains-marie
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
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International Electrotechnical Commission
ɆɟɠɞɭɧɚɪɨɞɧɚɹɗɥɟɤɬɪɨɬɟɯɧɢɱɟɫɤɚɹɄɨɦɢɫɫɢɹ
For price, see current catalogue
– 2 – 60335-2-50 © IEC:2002(E)
CONTENTS
FOREWORD . 3
INTRODUCTION .5
1 Scope . 6
2 Normative references. 6
3 Definitions . 6
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 .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.11
15 Moisture resistance.11
16 Leakage current and electric strength .14
17 Overload protection of transformers and associated circuits.14
18 Endurance .14
19 Abnormal operation.14
20 Stability and mechanical hazards.14
21 Mechanical strength.15
22 Construction .15
23 Internal wiring.16
24 Components .17
25 Supply connection and external flexible cords.17
26 Terminals for external conductors .17
27 Provision for earthing.17
28 Screws and connections .18
29 Clearances, creepage distances and solid insulation .18
30 Resistance to heat and fire .18
31 Resistance to rusting .18
32 Radiation, toxicity and similar hazards .18
Annexes.20
Bibliography.20
Figure 101 – Splash apparatus.19
60335-2-50 © IEC:2002(E) – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
SAFETY –
Part 2-50: Particular requirements
for commercial electric bains-marie
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/405/FDIS 61E/417/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
bains-marie.
– 4 – 60335-2-50 © 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).
– 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).
A bilingual version of this publication may be issued at a later date.
60335-2-50 © 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 – 60335-2-50 © IEC:2002(E)
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
SAFETY –
Part 2-50: Particular requirements
for commercial electric bains-marie
1 Scope
This clause of Part 1 is replaced by the following.
This International Standard deals with the safety of electrically operated commercial bains-
marie 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 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.
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.
60335-2-50 © IEC:2002(E) – 7 –
3.1.9 Replacement:
normal operation
operation of the appliance under the following conditions
Open-well and wet-heat-type bains-marie are filled with water to the indicated level and
topped up during the test in accordance with the manufacturer's instructions. The appliance is
operated with any control intended to be operated by the user set at maximum. If the water
boils, the control is then adjusted to the lowest setting that maintains simmering. No covers or
containers are fitted.
Dry-heat-type bains-marie are operated with any controls set at the maximum. Empty food
containers are placed in the well but with the container covers removed.
Combined-type appliances are operated under the most unfavourable conditions.
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
bain-marie
an appliance with a well that is used for the storage of hot food in containers prior to serving.
The containers are indirectly heated by hot air, steam or water in the well
3.102
open-well-type bain-marie
an appliance where the food containers rest in water in a heated well
3.103
wet-heat-type bain-marie
an appliance where the fitted food containers are heated by steam generated within the
appliance. The pressure in the well or steam generator does not differ significantly from
atmospheric pressure
3.104
dry-heat-type bain-marie
an appliance where the fitted food containers are heated by warm air generated within the
appliance
3.105
indicated level
a mark on the appliance to indicate the maximum liquid level for correct operation
3.106
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 – 60335-2-50 © 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 instruction sheet.
7.6 Addition:
[symbol 5021 of IEC 60417-1] equipotentiality
7.12 Addition:
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
60335-2-50 © IEC:2002(E) – 9 –
example cleaning, shall also be given. They shall include a statement that the appliance is not
to be cleaned with a water jet.
Appliances that are provided with an appliance inlet and are intended to be partially or
completely immersed in water for cleaning shall be accompanied by an instruction stating that
the connector shall be removed before the appliance is cleaned and that the appliance inlet
shall be dried before the appliance is used again.
The instructions of appliances other than stationary appliances and appliances with
detachable electrical parts that are not intended to be partially or completely immersed in
water for cleaning, shall state that the appliance or part must not be immersed.
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 peri
...
IEC 60335-2-50
Edition 4.1 2008-03
INTERNATIONAL
STANDARD
Household and similar electrical appliances – Safety –
Part 2-50: Particular requirements for commercial electric bains-marie
All rights reserved. Unless otherwise specified, 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
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IEC 60335-2-50
Edition 4.1 2008-03
INTERNATIONAL
STANDARD
Household and similar electrical appliances – Safety –
Part 2-50: Particular requirements for commercial electric bains-marie
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
CF
ICS 97.040.20 ISBN 2-8318-9544-8
– 2 – 60335-2-50 © IEC:2002+A1:2007(E)
CONTENTS
FOREWORD.3
INTRODUCTION.5
1 Scope.6
2 Normative references.6
3 Definitions.6
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.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 .11
15 Moisture resistance.11
16 Leakage current and electric strength.14
17 Overload protection of transformers and associated circuits .14
18 Endurance.14
19 Abnormal operation.14
20 Stability and mechanical hazards .14
21 Mechanical strength.15
22 Construction.15
23 Internal wiring.16
24 Components.17
25 Supply connection and external flexible cords .17
26 Terminals for external conductors.17
27 Provision for earthing .17
28 Screws and connections .18
29 Clearances, creepage distances and solid insulation .18
30 Resistance to heat and fire.18
31 Resistance to rusting.18
32 Radiation, toxicity and similar hazards.18
Annexes .20
Bibliography.
Figure 101 – Splash apparatus .19
60335-2-50 © IEC:2002+A1:2007(E) – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
SAFETY –
Part 2-50: Particular requirements
for commercial electric bains-marie
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 60335-2-50 consists of the fourth edition (2002) [documents
61E/405/FDIS and 61E/417/RVD] and its amendment 1 (2007) [documents 61E/588/FDIS and
61E/593/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 – 60335-2-50 © IEC:2002+A1:2007(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 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
bains-marie.
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.
60335-2-50 © IEC:2002+A1:2007(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 – 60335-2-50 © IEC:2002+A1:2007(E)
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
SAFETY –
Part 2-50: Particular requirements
for commercial electric bains-marie
1 Scope
This clause of Part 1 is replaced by the following.
This International Standard deals with the safety of electrically operated commercial bains-
marie 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 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.
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.
60335-2-50 © IEC:2002+A1:2007(E) – 7 –
3.1.9 Replacement:
normal operation
operation of the appliance under the following conditions
Open-well and wet-heat-type bains-marie are filled with water to the indicated level and
topped up during the test in accordance with the manufacturer's instructions. The appliance is
operated with any control intended to be operated by the user set at maximum. If the water
boils, the control is then adjusted to the lowest setting that maintains simmering. No covers or
containers are fitted.
Dry-heat-type bains-marie are operated with any controls set at the maximum. Empty food
containers are placed in the well but with the container covers removed.
Combined-type appliances are operated under the most unfavourable conditions.
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
bain-marie
an appliance with a well that is used for the storage of hot food in containers prior to serving.
The containers are indirectly heated by hot air, steam or water in the well
3.102
open-well-type bain-marie
an appliance where the food containers rest in water in a heated well
3.103
wet-heat-type bain-marie
an appliance where the fitted food containers are heated by steam generated within the
appliance. The pressure in the well or steam generator does not differ significantly from
atmospheric pressure
3.104
dry-heat-type bain-marie
an appliance where the fitted food containers are heated by warm air generated within the
appliance
3.105
indicated level
a mark on the appliance to indicate the maximum liquid level for correct operation
3.106
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 – 60335-2-50 © IEC:2002+A1:2007(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.
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 instruction sheet.
7.6 Addition:
[symbol 5021 of IEC 60417-1] equipotentiality
7.12 Addition:
If symbol 5021 of IEC 60417-1 is marked on the appliance its meaning shall be explained.
60335-2-50 © IEC:2002+A1:2007(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.
Appliances that are provided with an appliance inlet and are intended to be partially or
completely immersed in water for cleaning shall be accompanied by an instruction stating that
the connector shall be removed before the appliance is cleaned and that the appliance inlet
shall be dried before the appliance is used again.
The instructions of appliances other than stationary appliances and appliances with
detachable electrical parts that are not intended to be partially or completely immersed in
water for cleaning, shall state that the appliance or part must not be immersed.
For appliances that are permanently connected to fixed wiring and for which leakage currents
may exceed 10 mA, particularly if disconnected or not u
...
IEC 60335-2-50 ®
Edition 4.2 2017-06
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
colour
inside
Household and similar electrical appliances – Safety –
Part 2-50: Particular requirements for commercial electric bains-marie
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IEC 60335-2-50 ®
Edition 4.2 2017-06
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
colour
inside
Household and similar electrical appliances – Safety –
Part 2-50: Particular requirements for commercial electric bains-marie
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 97.040.20 ISBN 978-2-8322-4483-8
IEC 60335-2-50 ®
Edition 4.2 2017-06
CONSOLIDATED VERSION
REDLINE VERSION
colour
inside
Household and similar electrical appliances – Safety –
Part 2-50: Particular requirements for commercial electric bains-marie
CSV(en)
– 2 – IEC 60335-2-50:2002+AMD1:2007
+AMD2:2017 CSV IEC 2017
CONTENTS
FOREWORD . 4
INTRODUCTION . 7
1 Scope . 8
2 Normative references . 8
3 Terms and definitions . 9
4 General requirement . 10
5 General conditions for the tests . 10
6 Classification . 10
7 Marking and instructions . 11
8 Protection against access to live parts . 13
9 Starting of motor-operated appliances . 13
10 Power input and current . 14
11 Heating . 14
12 Void. 15
13 Leakage current and electric strength at operating temperature . 15
14 Transient overvoltages . 16
15 Moisture resistance . 16
16 Leakage current and electric strength . 18
17 Overload protection of transformers and associated circuits . 19
18 Endurance . 19
19 Abnormal operation . 19
20 Stability and mechanical hazards . 19
21 Mechanical strength . 19
22 Construction . 20
23 Internal wiring . 21
24 Components . 21
25 Supply connection and external flexible cords . 22
26 Terminals for external conductors . 22
27 Provision for earthing . 22
28 Screws and connections . 23
29 Clearances, creepage distances and solid insulation . 23
30 Resistance to heat and fire . 24
31 Resistance to rusting . 24
32 Radiation, toxicity and similar hazards . 24
Annexes . 28
Annex N (normative) Proof tracking test . 28
Annex P (informative) Guidance for the application of this standard to appliances used
in tropical climates . 29
Bibliography . 30
Figure 101 – Splash apparatus . 25
+AMD2:2017 CSV IEC 2017
Figure 102 – Identification of surfaces for temperature measurement . 26
Figure 103 – Probe for measuring surface temperatures . 27
Table 101 – Maximum temperature rises for specified external accessible surfaces
under normal operating conditions . 15
Table 102 – Assembling torques for screwed connections providing earthing continuity . 23
– 4 – IEC 60335-2-50:2002+AMD1:2007
+AMD2:2017 CSV IEC 2017
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
SAFETY –
Part 2-50: Particular requirements
for commercial electric bains-marie
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.
This consolidated version of the official IEC Standard and its amendments has been prepared
for user convenience.
IEC 60335-2-50 edition 4.2 contains the fourth edition (2002-11) [documents 61E/405/FDIS and
61E/417/RVD], its amendment 1 (2007-12) [documents 61E/588/FDIS and 61E/593/RVD] and its
amendment 2 (2017-06) [documents 61/5364/FDIS and 61/5392/RVD].
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.
+AMD2:2017 CSV IEC 2017
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.
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
bains-marie.
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 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.
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.
– 6 – IEC 60335-2-50:2002+AMD1:2007
+AMD2:2017 CSV IEC 2017
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).
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.
A bilingual version of this publication may be issued at a later date.
+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.
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.
– 8 – IEC 60335-2-50:2002+AMD1:2007
+AMD2:2017 CSV IEC 2017
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
SAFETY –
Part 2-50: Particular requirements
for commercial electric bains-marie
1 Scope
This clause of Part 1 is replaced by the following.
This International Standard deals with the safety of electrically operated commercial bains-
marie 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.
NOTE 101 These appliances are used for the commercial processing of food, 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.
2 Normative references
This clause of Part 1 is applicable except as follows.
Addition:
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
+AMD2:2017 CSV IEC 2017
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
Open-well and wet-heat-type bains-marie are filled with water to the indicated level and
topped up during the test in accordance with the manufacturer's instructions. The appliance is
operated with any control intended to be operated by the user set at maximum. If the water
boils, the control is then adjusted to the lowest setting that maintains simmering. No covers or
containers are fitted.
Dry-heat-type bains-marie are operated with any controls set at the maximum. Empty food
containers are placed in the well but with the container covers removed.
Combined-type appliances are operated under the most unfavourable conditions.
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
bain-marie
an appliance with a well that is used for the storage of hot food in containers prior to serving.
The containers are indirectly heated by hot air, steam or water in the well
3.102
open-well-type bain-marie
an appliance where the food containers rest in water in a heated well
3.103
wet-heat-type bain-marie
an appliance where the fitted food containers are heated by steam generated within the
appliance. The pressure in the well or steam generator does not differ significantly from
atmospheric pressure
3.104
dry-heat-type bain-marie
an appliance where the fitted food containers are heated by warm air generated within the
appliance
– 10 – IEC 60335-2-50:2002+AMD1:2007
+AMD2:2017 CSV IEC 2017
3.105
indicated level
a mark on the appliance to indicate the maximum liquid level for correct operation
3.106
installation wall
a special fixed construction containing supply facilities for appliances installed in conjunction
with it
3.107
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.
3.108
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.
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.
+AMD2:2017 CSV IEC 2017
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.
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
7.12 Addition:
If symbols 5021 of IEC 60417-1-5021 (2002-10) and IEC 60417-5041 (2002-10) is are marked
on the appliance its meaning shall be explained.
The instructions shall include the substance of the following warning:
WARNING: Opening the drain cock will lead to the outflow of the hot contents of the
bains-marie.
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 instructions concerning persons (including children) with reduced physical, sensory or
mental capabilities or lack of experience and knowledge and children playing with the
appliance are 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
– 12 – IEC 60335-2-50:2002+AMD1:2007
+AMD2:2017 CSV IEC 2017
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.
Appliances that are provided with an appliance inlet and are intended to be partially or
completely immersed in water for cleaning shall be accompanied by an instruction stating that
the connector shall be removed before the appliance is cleaned and that the appliance inlet
shall be dried before the appliance is used again.
The instructions of appliances other than stationary appliances and appliances with
detachable electrical parts that are not intended to be partially or completely immersed in
water for cleaning, shall state that the appliance or part must not be immersed.
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.
If a stationary appliance is intended to be moved for cleaning, this shall be stated.
For stationary appliances equipped with rollers or castors or intended to be moved for
cleaning, the instructions shall state the substance of the following.
This appliance is to be connected with flexible connections for equipotential bonding and
connection to services such as electricity supply, water supply, gas supply and steam
supply such that the appliance can be moved in the direction required for cleaning a
distance not less than the dimension of the appliance in the direction of movement plus
500 mm without the flexible connections becoming taut or being subject to strain.
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.
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.
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.
+AMD2:2017 CSV IEC 2017
Modification:
For fixed appliances, the marking of the name or trademark or identification mark of the
manufacturer or responsible vendor and the model or type reference shall be marked on the
appliance and, if not visible when the appliance is installed as in normal use, shall be included
in the instructions 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.
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 Appliances or the detachable electrical parts of appliances intended to be partially
immersed in water for cleaning shall be marked with a line that clearly indicates the maximum
depth of immersion, together with the substance of the following warning:
Do not immerse beyond this line
If there is any seam or seal that causes the appliance or part not to withstand the treatment
specified in 15.102, the line indicating the maximum depth of immersion shall be at least
50 mm below any such seam or seal when the appliance or the part is in the position in which
it is to be cleaned.
Compliance is checked by inspection and measurement.
7.103 Appliances intended to be filled by hand or a manually operated tap 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.
– 14 – IEC 60335-2-50:2002+AMD1:2007
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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.
11.3 Addition:
Where the external accessible surfaces are suitably flat and access permits, then the test
probe of Figure 103 is used to measure the temperature rises of external accessible
surfaces specified in Table 101. The probe is applied with a force of 4 N ± 1 N to the surface
in such a way that the best possible contact between the probe and the surface is ensured.
The measurement is performed after a contact period of 30 s.
The probe may be held in place using a laboratory stand clamp or similar device. Any
measuring instrument giving the same results as the probe may be used.
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.
11.7 Replace the test specification paragraph by the following.
Appliances are operated until steady conditions are established.
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Steady conditions are considered to exist 60 min after reaching the temperatures defined for
normal operation.
When an appliance is assembled in combination with, equipped with or incorporating
accessories or other appliances, the interaction shall be covered if they are provided to
operate simultaneously as stated by the manufacturer or by a common control.
NOTE 101 The duration of the test may consist of more than one cycle of operation.
11.8 Addition:
During the test, the temperature rises are monitored continuously and shall not exceed the
values shown in Table 3 and Table 101.
Table 101 – Maximum temperature rises for specified external
accessible surfaces under normal operating conditions
a b
Surface Temperature rise of external accessible surfaces
K
Bare metal 48
c
Coated metal 59
Glass and ceramic 65
d, e
Plastic and plastic coating > 0,4 mm
a
Temperature rises are not measured on:
– the underside of appliances intended to be used on a working surface or floor;
– the rear surface of appliances;
– surfaces that are inaccessible to a 75 mm diameter probe having a hemispherical end;
– functional surfaces and adjacent surfaces.
b
The temperature rise on external accessible surfaces up to a distance of 100 mm from adjacent surfaces of
the appliance, (see Figure 102) may exceed the limits by up to 25 K, but the relevant part shall then be
marked with symbol IEC 60417-5041 (2002-10) or the equivalent text.
c
Metal is considered coated when a coating having a minimum thickness of 90 µm made by enamel or non-
substantially plastic coating is used.
d
The temperature rise limit of plastic also applies for plastic material having a metal finish of thickness less
than 0,1 mm.
e
When the thickness of the plastic coating does not exceed 0,4 mm, the temperature rise limits of coated metal
for underlying metal apply or the temperature rise limits for glass or ceramic material for underlying glass or
ceramic material 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 0,75 mA or 1 mA per kW rated power
input of the appliance with a maximum
of 10 mA, whichever is higher.
– 16 – IEC 60335-2-50:2002+AMD1:2007
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− for other appliances 0,75 mA or 1 mA per kW rated power
input of the appliance with no maximum,
whichever is higher.
For portable class I appliances, instead of the permissible leakage current, the following
applies:
0,75 mA or 1 mA per kW rated power input
− for cord and plug connected appliances
of the appliance with a maximum of 10 mA,
whichever is higher.
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 Addition:
Appliances or any detachable electrical parts intended to be partially or completely immersed
in water for cleaning are also subjected to the tests of 15.102.
NOTE 101 Appliances other than stationary or any detachable electrical parts not marked with a line indicating
the maximum depth of immersion, or for which there is no warning against partial or complete immersion in the
instruction sheet, are considered to be appliances intended to be completely immersed in water for cleaning.
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 regulated
so 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 moved around in such a
way 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.
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 using a spillage solution comprising water
containing approximately 1 % NaCl and 0,6 % rinsing agent.
Any commercially available non-ionic rinsing agent may be used, but if there is any doubt with
regards to the test results, the rinsing agent shall have the following properties:
− viscosity, 17 mPa⋅s;
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− pH, 2,2 (1 % in water)
and its composition shall be
Substance Parts by mass
%
15,0
Plurafac ® LF 221
Cumene sulfonate (40 % solution) 11,5
Citric acid (anhydrous) 3,0
Deionized water 70,5
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.
The water-well and steam generators of appliances intended to be filled by hand are
completely filled with water containing approximately 1 % NaCl the solution and a further
quantity equal to 15 % of their capacity but not more than 10 l is poured in steadily over a
period of 1 min.
The food containers of dry-heat-type bains-marie are filled with water the solution and
placed in the appliance. A further quantity of 1 l is then added to each container.
Appliances intended to be filled by a manually operated tap or automatically are connected to
a water supply having the maximum supply pressure indicated by the manufacturer. The
means for controlling the incoming water is held fully open and the filling continued for 1 min
after the first evidence of overflow, or until a further protective system operates to stop the
inflow.
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
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