IEC 60335-2-99:2003
(Main)Household and similar electrical appliances - Safety - Part 2-99: Particular requirements for commercial electric hoods
Household and similar electrical appliances - Safety - Part 2-99: Particular requirements for commercial electric hoods
Deals with the safety of electrically operated commercial hoods intended for installation above commercial cooking appliances such as ranges, griddles, griddle grills and deep fat fryers, and not intended for household use. The hoods included in this standard are used, for example in restaurants, canteens, hospitals, and commercial enterprises such as bakeries, butcheries. The rated voltage being not more than 250 V for single-phase hoods connected between one phase and neutral, and 480 V for other hoods. Only single complete units and hoods supplied as seperate parts which when assembled form a complete working hood, incorporating a fan, are within the scope of this standard.
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Standards Content (Sample)
INTERNATIONAL IEC
STANDARD
60335-2-99
First edition
2003-02
Household and similar electrical appliances –
Safety –
Part 2-99:
Particular requirements for commercial
electric hoods
Appareils électrodomestiques et analogues –
Sécurité –
Partie 2-99:
Règles particulières pour les hottes de cuisine électriques
à usage commercial
Reference number
Publication numbering
As from 1 January 1997 all IEC publications are issued with a designation in the
60000 series. For example, IEC 34-1 is now referred to as IEC 60034-1.
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edition numbers 1.0, 1.1 and 1.2 refer, respectively, to the base publication, the
base publication incorporating amendment 1 and the base publication incorporating
amendments 1 and 2.
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INTERNATIONAL IEC
STANDARD
60335-2-99
First edition
2003-02
Household and similar electrical appliances –
Safety –
Part 2-99:
Particular requirements for commercial
electric hoods
Appareils électrodomestiques et analogues –
Sécurité –
Partie 2-99:
Règles particulières pour les hottes de cuisine électriques
à usage commercial
IEC 2003 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
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International Electrotechnical Commission
Международная Электротехническая Комиссия
For price, see current catalogue
– 2 – 60335-2-99 IEC:2003(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 . 7
6 Classification . 7
7 Marking and instructions . 7
8 Protection against access to live parts . 8
9 Starting of motor-operated appliances . 8
10 Power input and current. 9
11 Heating. 9
12 Void .10
13 Leakage current and electric strength at operating temperature .10
14 Transient overvoltages.10
15 Moisture resistance.10
16 Leakage current and electric strength .10
17 Overload protection of transformers and associated circuits.10
18 Endurance .10
19 Abnormal operation.11
20 Stability and mechanical hazards.11
21 Mechanical strength.11
22 Construction .11
23 Internal wiring.12
24 Components .12
25 Supply connection and external flexible cords.12
26 Terminals for external conductors .13
27 Provision for earthing.13
28 Screws and connections .13
29 Clearances, creeping distances and solid insulation .14
30 Resistance to heat and fire .14
31 Resistance to rusting .14
32 Radiation, toxicity and similar hazards .14
Annexes.15
Annex N (normative) Proof tracking test .15
Bibliography.15
60335-2-99 IEC:2003(E) – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
SAFETY –
Part 2-99: Particular requirements for commercial electric hoods
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 subcommittee 61E:
Safety of electrical commercial catering equipment, of IEC technical committee 61: Safety of
household and similar electrical appliances.
It forms the first edition of IEC 60335-2-99.
The text of this part of IEC 60335 is based on the following documents:
FDIS Report on voting
61E/422/FDIS 61E/425/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 it into the IEC standard: Safety requirements for commercial electric hoods.
– 4 – 60335-2-99 IEC:2003(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 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 hoods are allowed (Japan).
– 6.2: For hoods 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 hoods 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.
60335-2-99 IEC:2003(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 – 60335-2-99 IEC:2003(E)
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
SAFETY –
Part 2-99: Particular requirements for commercial electric hoods
1 Scope
This clause of Part 1 is replaced by the following.
This International Standard deals with the safety of electrically operated commercial hoods
intended for installation above commercial cooking appliances such as ranges, griddles,
griddle grills and deep fat fryers, and not intended for household use, their rated voltage
being not more than 250 V for single phase hoods connected between one phase and
neutral, and 480 V for other hoods. Only single complete units and hoods supplied as
separate parts which when assembled form a complete working hood, incorporating a fan, are
within the scope of the standard.
NOTE 101 Hoods are used, for example in restaurants, canteens, hospitals and commercial enterprises such as
bakeries, butcheries, etc.
The hood may be used above one or more appliance of the same or different types.
So 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 hoods intended to be used in vehicles or on board ships or aircraft, additional requirements may be
necessary;
– in many countries additional requirements including ventilation requirements are specified by the national
health authorities, the national authorities responsible for the protection of labour and similar authorities;
NOTE 103 This standard does not apply to:
– domestic range hoods (IEC 60335-2-31);
– purpose-built hoods, although this standard can be used as a guide (a purpose-built hood is either constructed
on-site or specially constructed in the factory and is not mass produced);
– hoods not incorporating a fan;
– hoods designed exclusively for industrial purposes;
– hoods intended to be used in locations wher
...
IEC 60335-2-99 ®
Edition 1.1 2017-06
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
colour
inside
Household and similar electrical appliances – Safety –
Part 2-99: Particular requirements for commercial electric hoods
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IEC 60335-2-99 ®
Edition 1.1 2017-06
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
colour
inside
Household and similar electrical appliances – Safety –
Part 2-99: Particular requirements for commercial electric hoods
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 97.040.20 ISBN 978-2-8322-4482-1
IEC 60335-2-99 ®
Edition 1.1 2017-06
CONSOLIDATED VERSION
REDLINE VERSION
colour
inside
Household and similar electrical appliances – Safety –
Part 2-99: Particular requirements for commercial electric hoods
– 2 – IEC 60335-2-99:2003+AMD1:2017 CSV
IEC 2017
CONTENTS
FOREWORD . 3
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 8
4 General requirement . 8
5 General conditions for the tests . 8
6 Classification . 8
7 Marking and instructions . 9
8 Protection against access to live parts . 10
9 Starting of motor-operated appliances . 10
10 Power input and current . 10
11 Heating . 11
12 Void. 12
13 Leakage current and electric strength at operating temperature . 12
14 Transient overvoltages . 12
15 Moisture resistance . 12
16 Leakage current and electric strength . 12
17 Overload protection of transformers and associated circuits . 13
18 Endurance . 13
19 Abnormal operation . 13
20 Stability and mechanical hazards . 13
21 Mechanical strength . 14
22 Construction . 14
23 Internal wiring . 15
24 Components . 15
25 Supply connection and external flexible cords . 15
26 Terminals for external conductors . 16
27 Provision for earthing . 16
28 Screws and connections . 16
29 Clearances, creeping distances and solid insulation . 17
30 Resistance to heat and fire . 17
31 Resistance to rusting . 18
32 Radiation, toxicity and similar hazards . 18
Annexes . 18
Annex N (normative) Proof tracking test . 18
Annex P (informative) Guidance for the application of this standard to appliances
used in tropical climates . 19
Bibliography . 20
Table 102 – Assembling torques for screwed connections providing earthing continuity . 17
IEC 2017
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
SAFETY –
Part 2-99: Particular requirements for commercial electric hoods
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 amendment has been prepared
for user convenience.
IEC 60335-2-99 edition 1.1 contains the first edition (2003-02) [documents 61E/422/FDIS and
61E/425/RVD] and its amendment 1 (2017-06) [documents 61/5366/FDIS and 61/5394/RVD].
In this Redline version, a vertical line in the margin shows where the technical content is
modified by amendment 1. Additions are in green text, deletions are in strikethrough red text.
A separate Final version with all changes accepted is available in this publication.
– 4 – IEC 60335-2-99:2003+AMD1:2017 CSV
IEC 2017
This part of International Standard IEC 60335 has been prepared by subcommittee 61E:
Safety of electrical commercial catering equipment, of IEC technical committee 61: Safety of
household and similar electrical appliances.
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 it into the IEC standard: Safety requirements for commercial electric hoods.
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 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 amendment 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.
The following differences exist in the countries indicated below:
– 6.1: Class 01 hoods are allowed (Japan).
– 6.2: For hoods 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 hoods intended to be installed in a kitchen, different values of impact energy are applicable
according to the height of the impact point (France).
NOTE 4 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.
IEC 2017
A bilingual version of this publication may be issued at a later date.
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 60335-2-99:2003+AMD1:2017 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.
IEC 2017
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
SAFETY –
Part 2-99: Particular requirements for commercial electric hoods
1 Scope
This clause of Part 1 is replaced by the following. The following extraction systems are
covered as well:
• back draft ventilation systems;
• downdraft ventilation systems;
• fume extraction modules.
This International Standard deals with the safety of electrically operated commercial hoods
intended for installation above commercial cooking appliances such as ranges, griddles,
griddle grills and deep fat fryers, and not intended for household and similar use, their rated
voltage being not more than 250 V for single phase hoods connected between one phase
and neutral, and 480 V for other hoods. Only single complete units and hoods supplied as
separate parts which when assembled form a complete working hood, incorporating a fan, are
within the scope of the standard.
NOTE 101 Hoods are used, for example in kitchens of restaurants, canteens, hospitals and in commercial
enterprises such as bakeries, butcheries, etc.
The hood may be used above one or more appliance of the same or different types.
So 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 hoods intended to be used in vehicles or on board ships or aircraft, additional requirements may be
necessary;
– in many countries additional requirements including ventilation requirements are specified by the national
health authorities, the national authorities responsible for the protection of labour and similar authorities;
− for hoods incorporating a filter system with means for ionizing the air, IEC 60335-2-65 also applies.
NOTE 103 This standard does not apply to:
– domestic range hoods (IEC 60335-2-31);
– purpose-built hoods, although this standard can be used as a guide (a purpose-built hood is either constructed
on-site or specially constructed in the factory and is not mass produced);
– hoods not incorporating a fan;
– hoods designed exclusively for industrial purposes;
– hoods intended to be used in locations where special conditions prevail, such as the presence of a corrosive or
explosive atmosphere (dust, vapour or gas).
NOTE 104 Requirements for hoods with externally mounted fans are under consideration.
2 Normative references
This clause of Part 1 is applicable except as follows.
Addition:
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
– 8 – IEC 60335-2-99:2003+AMD1:2017 CSV
IEC 2017
ISO 3506-2, Mechanical properties of corrosion-resistant stainless steel fasteners – Part 2:
Nuts
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 hood which
can be on at one time; where several such combinations are 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
The hood is operated after installation in accordance with the instructions, except that it is not
connected to a duct.
3.101
hood
motor-operated appliance intended to collect and remove contaminated air from above
cooking ranges, hobs and similar cooking catering appliances.
Note 1 to entry: The contaminated air may pass through a filter systems and be discharged back into the room or
removed from the room.
NOTE 2 The cooking appliances may be supplied by electricity or fuels such as gas.
4 General requirement
This clause of Part 1 is applicable.
5 General conditions for the tests
This clause of Part 1 is applicable.
6 Classification
This clause of Part 1 is applicable except as follows.
6.1 Replacement:
Hoods shall be class I with respect to protection against electric shock.
Compliance is checked by inspection and by the relevant tests.
IEC 2017
7 Marking and instructions
This clause of Part 1 is applicable except as follows.
7.1 Addition:
Hoods shall be marked on or near the lampholder with the maximum power input of
replaceable illumination lamps as follows:
max.W»
«lamp max. W» or «
7.6 Addition:
Add the following symbol:
[symbol 5021 of IEC 60417-1] equipotentiality
7.12 Addition:
The instructions for use shall state the substance of the following:
– there shall be adequate air intake into the room when the hood is used at the same time
as appliances burning gas or other fuels;
– the details concerning the method and frequency of cleaning and that filters must be
cleaned regularly;
– there is a fire risk if cleaning is not carried out in accordance with the instructions;
– do not flambé under the hood.
If Symbol 5021 of IEC 60417-1 is marked on the hood, its meaning shall be explained.
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 hood shall be accompanied by instructions detailing any special precautions necessary
for installation. The instructions for installation shall state:
– the minimum distance between the appliance and the lowest part of the hood;
– that regulations concerning the air intake and discharge of exhaust air have to be fulfilled;
– that ventilation requirements specified for the cooking equipment shall be observed;
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IEC 2017
– that special consideration is needed when there are other open flued appliances in the
same room to prevent backsuction of flue gasses;
– that if the hood is used above a gas appliance, a non-self-resetting device that turns off
the gas supply to the appliance if the hood stops operating must be installed in
accordance with national gas regulations;
– that the installation of the hood must not infringe gas regulations;
Instructions for user maintenance, for example cleaning, shall also be given. They shall
include a statement that the hood is not to be cleaned with a water jet or a steam cleaner.
Compliance is checked by inspection.
7.12.9 Not applicable.
7.14 Addition:
The marking for maximum power input of a replaceable illumination lamp shall be visible
during replacement of the lamp.
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 which can
be removed when conductors are being connected.
Compliance is checked by inspection.
8 Protection against access to live parts
This clause of Part 1 is applicable.
9 Starting of motor-operated appliances
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 which may occur in use. The supply source
is such that during the test the drop in voltage does not exceed 1 %.
Compliance is checked by starting the motor three times at a voltage equal to 0,85 times
rated voltage, the motor being at room temperature at the beginning of the test.
The motor is started each time under the conditions occurring at the beginning of normal
operation or, for automatic appliances, at the beginning of the normal cycle of operation, the
motor being allowed to come to rest between successive starts. For appliances provided with
motors having other than centrifugal starting switches, this test is repeated at a voltage equal
to 1,06 times rated voltage.
In all cases, the motor shall start and it shall function in such a way that safety is not affected,
and the overload protection devices of the motor shall not operate.
10 Power input and current
This clause of Part 1 is applicable.
IEC 2017
11 Heating
This clause of Part 1 is applicable except as follows.
11.2 Replacement:
Built-in hoods and hoods intended to be suspended from the ceiling are installed in
accordance with the instructions for installation. Other hoods are fixed to a vertical support.
The hood is placed above a hob so that the distance between its lowest point and the hob
surface is the minimum distance specified in the instructions for installation. A vertical side
wall extending to the top of the hood is placed at right angles to the vertical support, 100 mm
from one side of the hood. Dull black-painted plywood approximately 20 mm thick is used for
the vertical support, the side wall and for the installation of built-in hoods.
The hob selected for the test has an even number of uniformly distributed gas burners
with a total heat input equal to 30 kW/m of the gross area (width times depth) of the
hood. If the instructions for installation indicates that the hood must extend beyond
the sides of the appliance below it by a certain distance, it is taken into account. If no
indication is given, the total heat input of the test hob is increased by 10 %.
The gas burners are supplied with natural gas or liquid gas.
Vessels containing water are placed without lids on the gas burners, which are operated to
maintain vigorous boiling. The diameters or sizes of the vessels are approximately equal
to that of the hob elements.
The hood is also tested with the hob in operation and the fan switched off.
NOTE 101 This test is only conducted with gas at the minimum given distance specified in the instructions,
because it gives the most unfavourable conditions.
Hoods are operated in accordance with the manufacturer’s instructions.
Hoods intended to be placed above a hob are installed so that the distance between their
lowest point and the hob surface is the minimum distance specified in the instructions for
installation. The hob selected for the test shall have uniformly arranged gas burners with a
total heat input equal to 30 kW/m of the gross area (width times depth) of the hood. Vessels
containing water are placed without lids on the gas burners, which are operated to maintain
boiling. The diameters or sizes of the vessels are approximately equal to that of the cooking
zones.
Other hoods are operated in the most severe conditions according to the manufacturer’s
instructions.
Hoods intended to be used in combination with other appliances are tested in combination
with the other appliance in normal operation. Hoods that are not interlocked with the
appliance are also tested with the appliance in operation and the fan switched off.
Hoods are placed in a test corner as follows:
− hoods normally fixed to a wall are fixed to one of the walls, as near to the other wall and
floor or ceiling as is likely to occur, taking into account the instructions;
− hoods normally fixed to a ceiling are fixed to the ceiling as near to the walls as is likely to
occur, taking into account the instructions;
− other hoods are placed as near to the walls as possible.
Dull black-painted plywood approximately 20 mm thick is used for the test corner.
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IEC 2017
Hoods intended to be used in combination with other appliances are placed as required for
the appliance.
11.7 Replacement:
Hoods are operated until steady conditions are established.
NOTE 101 The duration of the test may consist of more than one cycle of operation.
11.8 Modification:
The temperature rise limit for external enclosures is not applicable.
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 hoods appliances, the
following applies:
– for cord and plug connected hoods 0,75 mA or 1 mA per kW rated power input
appliances of the hood appliance with a maximum of
10 mA, whichever is higher.
– for other hoods appliances 0,75 mA or 1 mA per kW rated power input
of the hood appliance with no maximum,
whichever is higher.
For portable class I appliances, instead of the permissible leakage current, 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.
14 Transient overvoltages
This clause of Part 1 is applicable.
15 Moisture resistance
This clause of Part 1 is applicable except as follows.
15.3 Addition:
NOTE 101 If it is not possible to place the whole hood in the humidity cabinet, parts containing electrical
components are tested separately, taking into account the conditions which occur in the hood.
16 Leakage current and electric strength
This clause of Part 1 is applicable except as follows.
16.2 Modification:
IEC 2017
Instead of the permissible leakage current for stationary class I hoods appliances, the
following applies:
– for cord and plug connected hoods 0,75m A or 1 mA per kW rated power input
appliances of the hood appliance with a maximum of 10
mA, whichever is higher;
– for other hoods appliances 0,75 mA or 1 mA per kW rated power input
of the hood appliance with no maximum,
whichever is higher.
For portable class I appliances, instead of the permissible leakage current, 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.
17 Overload protection of transformers and associated circuits
This clause of Part 1 is applicable.
18 Endurance
This clause of Part 1 is not applicable.
19 Abnormal operation
This clause of Part 1 is applicable except as follows.
19.1 Addition:
Compliance is also checked by the test of 19.101.
19.13 Addition:
During the test of 19.101, the temperature of the motor windings shall not exceed the values
shown in table 8.
The hood shall not deform to such an extent that parts fall from it.
19.101 The hood is operated above a gas hob as specified in Clause 11, but without
vessels and only the gas burners at the front or the back being switched on, whichever is the
most unfavourable. Hoods intended to be placed above a hob are operated as specified in
11.2, but without vessels and with all gas burners switched on.
20 Stability and mechanical hazards
This clause of Part 1 is applicable except as follows.
20.1 Addition:
Portable hoods provided with wheels are placed in the most unfavourable position against an
edge with a height equal to the radius of the wheels plus 10 mm. If the wheels differ in size,
that edge height that is the most unfavourable is chosen.
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IEC 2017
A force equal to 8 % of the mass of the fully equipped appliance is applied horizontally to the
middle of the top edge of the appliance but not higher than 900 mm, in the most unfavourable
direction.
The appliance shall not tilt.
20.2 Addition:
Filters are considered to be detachable parts.
21 Mechanical strength
This clause of Part 1 is applicable.
22 Construction
This clause of Part 1 is applicable except as follows.
22.8 Replacement:
For hoods having compartments to which access is gained during user maintenance, the
electrical connections shall be arranged so that they are not subjected to pulling during
cleaning or other user maintenance.
Compliance is checked by inspection and by manual test.
Detachable parts are removed. It shall not be possible to grasp wiring in such a way that the
connections are subjected to undue stress.
In case of doubt, the wiring is subjected to a pull of 10 N, applied without jerks three times in
succession, in the most unfavourable direction likely to occur during user maintenance.
There shall be no appreciable displacement of the connections.
NOTE 101 The wiring to interconnection couplers intended to be disconnected before cleaning or user
maintenance is not tested.
22.101 Hoods shall be protected in such a manner that moisture and grease will not collect
in such a way as to affect creepage distance and clearance values. Electrical insulation for
which creepage distances and clearances are specified, shall not be located in air ducts.
Compliance is checked by inspection.
22.102 For three-phase appliances, thermal cut-outs protecting motors the unexpected
starting of which may cause a hazard shall be of the non-self-resetting and trip-free type, and
shall provide all-pole disconnection from the related supply circuits.
For single-phase appliances, thermal cut-outs protecting motors the unexpected starting of
which may cause a hazard shall be of the non-self-resetting and trip-free type, and shall
provide at least one-pole disconnection.
If the non-self-resetting thermal cut-out is only accessible after removing parts with the aid
of a tool, the trip-free type is not required.
NOTE Thermal cut-outs of the trip-free type have an automatic action, with a reset actuating member, so
constructed that the automatic action is independent of manipulation or position of the reset mechanism.
Compliance is checked by inspection and by manual test.
IEC 2017
22.103 Lights, switches or push-buttons shall only be coloured red for the indication of
danger, alarm or similar situations.
Compliance is checked by inspection.
22.104 Hoods shall be constructed so that they can be fixed securely to a wall or other
support. Brackets and similar means shall be of metal which shall not be liable to creep or
deform.
Compliance is checked by inspection.
NOTE Key-hole slots, hooks and similar means, without any further means to prevent the hood from being
inadvertently lifted off the support, are not considered to be adequate means for fixing the hood securely.
22.105 Hoods shall be constructed so that parts liable to accumulate deposits of grease,
including parts located behind a filter, can be cleaned.
Compliance is checked by inspection.
NOTE Parts located behind a filter are considered to be parts which have to be cleaned.
22.106 Air filters of the electrostatic type shall not be used in a hood.
Compliance is checked by inspection.
23 Internal wiring
This clause of Part 1 is applicable.
24 Components
This clause of Part 1 is applicable.
25 Supply connection and external flexible cords
This clause of Part 1 is applicable except as follows.
25.3 Addition:
Fixed hoods shall be constructed so that the supply cord can be connected after the hood
has been installed in accordance with the instructions for installation.
Terminals for permanent connection of cables to fixed wiring may also be suitable for the type
X attachment of a supply cord. In this case a cord anchorage complying with 25.16 shall be
fitted to the appliance.
If the hood is provided with a set of terminals allowing the connection of a flexible cord, they
shall be suitable for the type X attachment of the cord.
In both cases the instructions shall give full particulars of the power supply cord.
Compliance is checked by inspection.
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IEC 2017
25.7 Modification:
Instead of the types of supply cords specified, the following applies:
Addition:
Supply cords shall be oil-resistant, sheathed flexible cable not lighter than ordinary
polychloroprene or other equivalent synthetic elastomer sheathed cords. Their properties shall
be at least those of ordinary polychloroprene sheathed cords (code designation 60245 IEC
57).
26 Terminals for external conductors
This clause of Part 1 is applicable.
27 Provision for earthing
This clause of Part 1 is applicable except as follows.
27.1 Addition:
Metal parts which become accessible during user maintenance are considered to be
accessible metal parts.
27.2 Addition:
Hoods shall be provided with a terminal for the connection of an external equipotential
conductor. This terminal shall be in effective electrical contact with all fixed exposed metal
parts of the hood, and shall allow the connection of a conductor having a nominal
2 2
cross-sectional area of 2,5 mm to 6 mm . It shall be located in a position convenient for
the connection of the bonding conductor after installation of the hood.
NOTE 101 Small fixed exposed metal parts, for example name-plates and the like, are not required to be in
electrical contact with the terminal.
28 Screws and connections
This clause of Part 1 is applicable except as follows.
28.1 Addition:
Screws made of carbon steel and alloy steel shall be made in accordance with ISO 898-1.
Screws made of corrosion-resistant stainless-steel shall be made in accordance with
ISO 3506-1, or ISO 3506-2, or ISO 3506-3, or ISO 3506-4.
28.4 Addition:
Screws that make mechanical connections and electrical connections shall be so designed
that the contact pressure does not change appreciably through loosening of the screwed
assembly parts during operational stress and contact corrosion.
Screws that make mechanical connections and provide earthing continuity shall be so
designed that the contact pressure does not change appreciably through loosening of the
IEC 2017
screwed assembly parts due to operational stress and contact corrosion. They shall be
designed so that a minimum contact pressure remains.
Compliance is checked by inspection and by measuring the assembling torques for screwed
connections providing earthing continuity by applying a torque as specified in Table 102 to
turn the screw in the fastening direction. The screw shall not turn.
The screw shall not have been unfastened prior to performing this test.
Table 102 – Assembling torques for screwed connections providing earthing continuity
Assembling torque
Nm
Outer thread
Screwed connections for the mechanical Screwed connections for the mechanical
diameter of
strength of the screws A2-70 according to strength of the screws > 8.8 according to
the screw
ISO 3506-1, or ISO 3506-2, or ISO 3506-3, ISO 898-1
mm
or ISO 3506-4 and 5.8 according to
ISO 898-1
0,8 1,3
> 2,8 and ≤ 3,6
> 3,6 and ≤ 4,2 1,9 3,0
3,7 6,0
> 4,2 and ≤ 5,3
6,5 10,0
> 5,3 and ≤ 6,3
M 8 15,0 25,0
M 10 31,0 50,0
29 Clearances, creeping distances and solid insulation
This clause of Part 1 is applicable except as follows.
29.2 Addition:
The micro-environment is pollution degree 3 and the insulation shall have a CTI not less
than 250, unless the insulation is enclosed or located so that it is unlikely to be exposed
to pollution during normal use of the appliance.
30 Resistance to heat and fire
This clause of Part 1 is applicable except as follows.
30.1 Addition:
The ball pressure test is carried out on the exposed parts of the appliance at a minimum
temperature of at least 105 °C ± 2 °C on exposed parts on the lower surface of the hood.
30.2.1 Modification:
The glow-wire test is carried out at 650 °C. The glow-wire flammability index (GWFI)
according to IEC 60695-2-12 shall be at least 650 °C.
30.2.2 Not applicable.
30.101 Hoods shall not incorporate combustible material liable to extend a fire originating
underneath it.
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IEC 2017
Compliance is checked as follows.
Filters of non-metallic material or metallic filters coated with non-metallic material intended for
the absorption of fumes and/or grease are subjected to the burning test specified in ISO 9772
for category HBF material, if relevant, or shall be classified at least HB40 according to
IEC 60695-11-10, except that the thickness of the specimen is that of the filte
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