SIST EN 60335-2-99:2004

• Abstract:

  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.

• Status: Published
• Publication Date: 29-Feb-2004
• ICS: 97.040.20 - Cooking ranges, working tables, ovens and similar appliances
• Technical Committee: VGA - Safety of household and similar electrical appliances
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Mar-2004
• Due Date: 01-Mar-2004
• Completion Date: 01-Mar-2004
• Directive: 2006/95/EC - Directive 2006/95/EC of the European Parliament and of the Council of 12 December 2006 on the harmonisation of the laws of Member States relating to electrical equipment designed for use within certain voltage limits (codified version)
  OJ Ref: C 71/17 OJ Date: 19-Mar-2010
• Directive:

  ---

  2014/35/EU - Directive 2014/35/EU of the European Parliament and of the Council of 26 February 2014 on the harmonisation of the laws of the Member States relating to the making available on the market of electrical equipment designed for use within certain voltage limits
  OJ Ref: C 249/03 OJ Date: 08-Jul-2016
• Directive:

  ---

  73/23/EEC - Electrical equipment designed for use within certain voltage limits
• Ref Project: EN 60335-2-99:2003 - Household and similar electrical appliances - Safety - Part 2-99: Particular requirements for commercial electric hoods

• Referred By: SIST EN 12976-1:2022 - Thermal solar systems and components - Factory made systems - Part 1: General requirements
• Effective Date: 09-Feb-2026
• Referred By: SIST EN 12976-1:2017 - Thermal solar systems and components - Factory made systems - Part 1: General requirements
• Effective Date: 09-Feb-2026
• Amended By: SIST EN 60335-2-99:2004/A1:2019 - Household and similar electrical appliances - Safety - Part 2-99: Particular requirements for commercial electric hoods
• Effective Date: 01-Sep-2019
• Amended By: SIST EN 60335-2-99:2004/A11:2023 - Household and similar electrical appliances - Safety - Part 2-99: Particular requirements for commercial electric hoods
• Effective Date: 21-Feb-2012
• Revised: oSIST prEN IEC 60335-2-99:2026 - Household and similar electrical appliances - Safety - Part 2-99: Particular requirements for commercial electric hoods
• Effective Date: 01-Apr-2025

SIST EN 60335-2-99:2004 is a Slovenian standard published by SIST for the safety of electrically operated commercial hoods. It specifies particular requirements for hoods installed above commercial cooking appliances and intended for commercial use, such as in restaurants, canteens, hospitals, bakeries and butcheries. The document is meant for people assessing, designing, installing and testing this type of appliance.

What does SIST EN 60335-2-99:2004 specify?

SIST EN 60335-2-99:2004 covers the safety of commercial electric hoods and explains how this part works together with the general safety standard for household and similar electrical appliances. The standard is organized as clauses 1 to 32, with Annex N as a normative annex and a bibliography at the end.

Annex	What it covers
Annex N	Proof tracking test

The scope is limited to electrically operated commercial hoods above ranges, griddles, griddle grills and deep fat fryers. It applies to single complete units and to hoods supplied in separate parts that form a complete working hood with a fan when assembled. It excludes domestic range hoods, purpose-built hoods, hoods without a fan, hoods for industrial purposes only, and hoods for special atmospheres such as corrosive or explosive environments.

What are the key requirements of SIST EN 60335-2-99:2004?

SIST EN 60335-2-99:2004 mainly adapts the Part 1 safety rules to the specific risks of commercial hoods. The most important points are classification, marking, installation information, electrical protection, heating, abnormal operation, construction and fire resistance.

Electrical safety and classification

Clause 6 requires hoods to be class I for protection against electric shock. In practice, the hood must have protective earthing, so the buyer or installer should expect a metal-bodied appliance with an earth connection.

Marking and instructions

Clause 7 requires marking for replaceable lamps and use of the equipotentiality symbol where applicable. The instructions must warn about adequate air intake when fuel-burning appliances are used, regular filter cleaning, fire risk if cleaning is neglected, and the prohibition on flambéing under the hood. Installation instructions must state the minimum mounting distance, ventilation requirements, and precautions for gas appliances and other open-flued appliances.

Starting, heating and abnormal operation

Clause 9 requires fan motors that provide cooling to start reliably under the voltage conditions that can occur in use. Clause 11 sets the heating test arrangement above a hob, including operation with the fan switched off, and Clause 19 checks abnormal operation by running the hood under an unfavorable burner arrangement. For users, this means the hood is assessed not only for normal extraction but also for likely misuse and loss of cooling.

Leakage current and moisture

Clauses 13 and 16 set leakage current limits that depend on rated power input, with a maximum for cord-and-plug connected hoods. Clause 15 adds moisture-resistance considerations. These provisions matter because hoods are exposed to steam, cleaning and greasy deposits.

Construction and mounting

Clause 22 requires wiring to be protected from pulling during user maintenance, limits moisture and grease buildup that could affect creepage distances, and requires non-self-resetting thermal cut-outs in specified cases. It also requires secure fixing to a wall or other support, cleanable grease-collecting parts, and no electrostatic air filters.

Connections and earthing

Clause 25 requires fixed hoods to allow supply cord connection after installation and specifies an oil-resistant flexible supply cord type. Clause 27 requires a terminal for an external equipotential conductor, with effective connection to fixed exposed metal parts. This is important for installers in commercial kitchens where bonding between metal services may be needed.

Fire resistance

Clause 30 sets heat and fire checks for exposed lower-surface parts, uses a 650 °C glow-wire test, and requires the hood not to contain combustible material that could spread a fire from below. Filter materials and internal air-duct parts are also checked with fire tests named in the document.

What terms does SIST EN 60335-2-99:2004 define?

• Hood - A motor-operated appliance that collects contaminated air from above cooking appliances and may recirculate it or discharge it outside.
• Normal operation - Operation after installation according to the instructions, but without connection to a duct.
• Rated power input - The sum of the power inputs of all hood elements that can be on at the same time, using the highest possible combination.
• Class I - The protection class used here for electric shock protection, which means the hood is designed for protective earthing.
• Equipotentiality - The bonding concept identified by Symbol 5021, used to connect metal parts to an equipotential conductor.
• CTI - Comparative Tracking Index, used in the insulation requirement in pollution degree 3 conditions.

Who uses SIST EN 60335-2-99:2004?

Manufacturers use SIST EN 60335-2-99:2004 when designing and declaring commercial hoods. Test laboratories use it for safety testing, heating tests, leakage current checks, fire tests and proof tracking testing. Installers and maintenance teams use it for mounting, bonding, wiring and cleaning instructions. Buyers, quality managers and compliance teams in food service, catering and commercial kitchen projects use it to judge whether a hood is suitable for professional kitchen use.

Which standards are used with SIST EN 60335-2-99:2004?

SIST EN 60335-2-99:2004 is used together with EN 60335-1 / IEC 60335-1, which provides the general safety requirements that this part modifies for commercial hoods. It also refers to IEC 60335-2-31 for domestic range hoods, which are outside this standard’s scope. For fire and material tests, it names ISO 9772 and IEC 60695-11-10. For the equipotential bonding symbol, it uses IEC 60417-1. The introduction also refers to IEC 60364 for compatibility with wiring rules.

What does the SIST EN 60335-2-99:2004 document contain?

SIST EN 60335-2-99:2004 contains the clause-by-clause safety requirements for commercial electric hoods, from scope and definitions through marking, tests, construction, wiring, earthing, insulation and fire resistance. It includes specific test set-ups for heating above a gas hob, fan starting, abnormal operation, moisture exposure and proof tracking. Annex N gives the proof tracking test used for insulation-related verification. The document also includes a bibliography with related IEC references.

SLOVENSKI SIST EN 60335-2-99:2004

STANDARD
marec 2004
Gospodinjski in podobni električni aparati - Varnost - 2-99. del: Posebne
zahteve za komercialne električne kuhinjske nape (IEC 60335-2-99:2003)
Household and similar electrical appliances - Safety - Part 2-99: Particular
requirements for commercial electric hoods
ICS 97.040.20 Referenčna številka
©  Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno

EUROPEAN STANDARD EN 60335-2-99
NORME EUROPÉENNE
EUROPÄISCHE NORM September 2003

ICS 97.040.20
English version
Household and similar electrical appliances –
Safety
Part 2-99: Particular requirements for commercial electric hoods
(IEC 60335-2-99:2003)
Appareils électrodomestiques et Sicherheit elektrischer Geräte für den
analogues – Hausgebrauch und ähnliche Zwecke
Sécurité Teil 2-99: Besondere Anforderungen
Partie 2-99: Règles particulières für elektrische Dunstabzugshauben
pour les hottes de cuisine électriques für den gewerblichen Gebrauch
à usage commercial (IEC 60335-2-99:2003)
(CEI 60335-2-99:2003)
This European Standard was approved by CENELEC on 2003-07-01. 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, Lithuania, 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 60335-2-99:2003 E
Foreword
The text of document 61E/422/FDIS, future first edition of IEC 60335-2-99, prepared by SC 61E of the IEC
Technical Committee 61, Safety of household and similar electrical appliances, was submitted to the
IEC-CENELEC parallel vote and was approved by CENELEC as EN 60335-2-99 on 2003-07-01.
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) 2004-04-01
- date on which national standards
conflicting with the EN have to be withdrawn (dow) 2006-07-01
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 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 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.
p NOTE  In this document, p is used in the margin to indicate instructions for preparing the printed version.
_____________
- 3 - EN 60335-2-99:2003
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 60335-2-99:2003 was approved by CENELEC as a European
Standard without any modification.
____________
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: [phone] Telefax: [phone] E-mail: [e-mail]  Web: www.iec.ch
PRICE CODE
Commission Electrotechnique Internationale
P
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 su
...