SIST EN 60335-2-50:2003
(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.
Sicherheit elektrischer Geräte für den Hausgebrauch und ähnliche Zwecke -- Teil 2-50: Besondere Anforderungen für elektrische Warmhaltegeräte für den gewerblichen Gebrauch
Appareils électrodomestiques et analogues - Sécurité -- Partie 2-50: Règles particulières pour les bains-marie électriques à usage collectif
En anglais seulement.
Gospodinjski in podobni električni aparati - Varnost - 2-50. del: Posebne zahteve za komercialne električne vodne kopeli za gretje hrane (IEC 60335-2-50:2002) (vsebuje popravek AC:2007)
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 60335-2-50:2003
01-september-2003
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SIST EN 60335-2-50:2001
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Household and similar electrical appliances - Safety -- Part 2-50: Particular requirements
for commercial electric bains-marie
Sicherheit elektrischer Geräte für den Hausgebrauch und ähnliche Zwecke -- Teil 2-50:
Besondere Anforderungen für elektrische Warmhaltegeräte für den gewerblichen
Gebrauch
Appareils électrodomestiques et analogues - Sécurité -- Partie 2-50: Règles particulières
pour les bains-marie électriques à usage collectif
Ta slovenski standard je istoveten z: EN 60335-2-50:2003
ICS:
97.040.50 Majhni gospodinjski aparati Small kitchen appliances
SIST EN 60335-2-50:2003 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 60335-2-50:2003
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SIST EN 60335-2-50:2003
EUROPEAN STANDARD EN 60335-2-50
NORME EUROPÉENNE
EUROPÄISCHE NORM March 2003
ICS 97.040.20 Supersedes EN 60335-2-50:2000
Incorporates Corrigendum September 2007
English version
Household and similar electrical appliances –
Safety
Part 2-50: Particular requirements
for commercial electric bains-marie
(IEC 60335-2-50:2002)
Appareils électrodomestiques Sicherheit elektrischer Geräte für den
et analogues – Hausgebrauch und ähnliche Zwecke
Sécurité Teil 2-50: Besondere Anforderungen
Partie 2-50: Règles particulières für elektrische Warmhaltegeräte
pour les bains-marie électriques für den gewerblichen Gebrauch
à usage collectif (IEC 60335-2-50:2002)
(CEI 60335-2-50:2002)
This European Standard was approved by CENELEC on 2003-02-01. CENELEC members are bound to
comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on
application to the Central Secretariat or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CENELEC member into its own language and
notified to the Central Secretariat has the same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic,
Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta,
Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United Kingdom.
CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: rue de Stassart 35, B - 1050 Brussels
© 2003 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 60335-2-50:2003 E
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SIST EN 60335-2-50:2003
EN 60335-2-50:2003 2 -
Foreword
The text of document 61E/405/FDIS, future fourth edition of IEC 60335-2-50, prepared by SC 61E of the
IEC Technical Committee 61, was submitted to the IEC-CENELEC parallel vote and was approved by
CENELEC as EN 60335-2-50 on 2003-02-01.
This European Standard replaces EN 60335-2-50:2000.
The following dates are applicable:
- latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2003-11-01
- date on which national standards
conflicting with the EN have to be withdrawn (dow) 2006-02-01
This part 2 has to be used in conjunction with EN 60335-1, Household and similar electrical appliances –
Safety – Part 1: General requirements. It was established on the basis of the 2002 edition of that standard.
Amendments and revisions of Part 1 have also to be taken into account and the dates when such changes
become applicable will be stated in the relevant amendment or revision of Part 1.
This part 2 supplements or modifies the corresponding clauses of EN 60335-1, so as to convert it into the
European 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 of
Part 1 is to be adapted accordingly.
NOTE 1 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.;
- subclauses, notes and annexes that are additional to those in the IEC standard are prefixed with the letter Z.
NOTE 2 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 concerns an adjective, the adjective and the associated noun
are also in bold.
There are no special national conditions causing a deviation from this European Standard, other than
those listed in Annex ZA to EN 60335-1.
There are no national deviations from this European Standard, other than those listed in Annex ZB to
EN 60335-1.
The contents of the corrigendum of September 2007 have been included in this copy.
p NOTE In this document, p is used in the margin to indicate instructions for preparing the printed version.
_____________
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SIST EN 60335-2-50:2003
- 3 - EN 60335-2-50:2003
Introduction
p Add:
An investigation by CENELEC TC 61 has shown that all risks from products within the scope of this
standard are fully covered by the Low Voltage Directive, 73/23/EEC. For products having mechanical
moving parts, a risk assessment in accordance with the Machinery Directive, 98/37/EC, has shown that
the risks are mainly of electrical origin and consequently this directive is not applicable. However, the
relevant essential safety requirements of the Machinery Directive are covered by this standard together
with the principal objectives of the Low Voltage Directive.
____________
Endorsement notice
The text of the International Standard IEC 60335-2-50:2002 was approved by CENELEC as a European
Standard without any modification.
____________
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SIST EN 60335-2-50:2003
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SIST EN 60335-2-50:2003
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
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R
International Electrotechnical Commission
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For price, see current catalogue
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SIST EN 60335-2-50:2003
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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
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SIST EN 60335-2-50:2003
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.
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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.
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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.
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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.
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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.
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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
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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 periods, or during initial
installation, the instructions shall give recommendations regarding the rating of protective
devices, such as earth leakage relays to be installed.
Compliance is checked by inspection.
7.12.4 Addition:
The instructions for built-in appliances having a separate control panel for several
appliances shall state that the control panel is only to be connected to the specified
appliances in order to avoid a possible hazard.
7.15 Addition:
When it is not practical to place the marking of fixed appliances so that it is visible after the
appliance has been installed, the relevant information shall also be included in the
instructions for use or on an additional label that can be fixed near the appliance after
installation.
NOTE 101 An example of such a fixed appliance is a built-in appliance.
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.
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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 temperatur
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