IEC 60335-2-42:2000

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

Deals with the safety of electrical commercial forced convection ovens, steam cookers, steam-convection ovens and steam generators. These are not intended for household use. As examples, they are used in restaurants, canteens, bakeries and butcheries. Their rated voltage is not more than 250 V for single phase appliances and 480 V for other appliances. The electrical part of appliances using other energy heat sources is covered. It replaces IEc 60335-2-46, 1986.

General Information

• Status: Published
• Publication Date: 15-Mar-2000
• ICS: 97.040.20 - Cooking ranges, working tables, ovens and similar appliances
• Technical Committee: TC 61 - Safety of household and similar electrical appliances
• Current Stage: DELPUB - Deleted Publication
• Completion Date: 28-Nov-2002

Relations

• Revised: IEC 60335-2-42:2002 - Household and similar electrical appliances - Safety - Part 2-42: Particular requirements for commercial electric forced convection ovens, steam cookers and steam-convection ovens
• Effective Date: 05-Sep-2023
• Revises: IEC 60335-2-42:1994/AMD2:1998 - Amendment 2 - Safety of household and similar electrical appliances - Part 2-42: Particular requirements for commercial electric forced convection ovens, steam cookers and steam-convection ovens
• Effective Date: 05-Sep-2023

Standards Content (Sample)

INTERNATIONAL IEC
STANDARD
60335-2-42
Fourth edition
2000-03
Safety of household and
similar electrical appliances –
Part 2-42:
Particular requirements for commercial electric
forced convection ovens, steam cookers and
steam-convection ovens
Sécurité des appareils électrodomestiques et analogues –
Partie 2-42:
Règles particulières pour les fours électriques à convection
forcée, les cuiseurs à vapeur électriques et les fours combinés
vapeur-convection électriques à usage collectif

Reference number
Numbering
As from 1 January 1997 all IEC publications are issued with a designation in the
60000 series.
Consolidated publications
Consolidated versions of some IEC publications including amendments are

available. For example, 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.

Validity of this publication
The technical content of IEC publications is kept under constant review by the IEC,
thus ensuring that the content reflects current technology.
Information relating to the date of the reconfirmation of the publication is available
in the IEC catalogue.
Information on the subjects under consideration and work in progress undertaken
by the technical committee which has prepared this publication, as well as the list
of publications issued, is to be found at the following IEC sources:
• IEC web site*
•
Catalogue of IEC publications
Published yearly with regular updates
(On-line catalogue)*
• IEC Bulletin
Available both at the IEC web site* and as a printed periodical
Terminology, graphical and letter symbols
For general terminology, readers are referred to IEC 60050: International
Electrotechnical Vocabulary (IEV).
For graphical symbols, and letter symbols and signs approved by the IEC for
general use, readers are referred to publications IEC 60027: Letter symbols to be
used in electrical technology, IEC 60417: Graphical symbols for use on equipment.
Index, survey and compilation of the single sheets and IEC 60617: Graphical symbols
for diagrams.
* See web site address on title page.

INTERNATIONAL IEC
STANDARD
60335-2-42
Fourth edition
2000-03
Safety of household and
similar electrical appliances –
Part 2-42:
Particular requirements for commercial electric
forced convection ovens, steam cookers and
steam-convection ovens
Sécurité des appareils électrodomestiques et analogues –
Partie 2-42:
Règles particulières pour les fours électriques à convection
forcée, les cuiseurs à vapeur électriques et les fours combinés
vapeur-convection électriques à usage collectif

 IEC 2000  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 Geneva, Switzerland
Telefax: [phone] e-mail: [e-mail] IEC web site http://www.iec.ch
Commission Electrotechnique Internationale
PRICE CODE
T
International Electrotechnical Commission
For price, see current catalogue

– 2 – 60335-2-42  IEC:2000(E)

CONTENTS
Page
FOREWORD . 3

Clause
1 Scope . 5

2 Definitions. 5

3 General requirement . 8

4 General conditions for the tests . 8
5 Void . 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 . 11
11 Heating . 11
12 Void . 12
13 Leakage current and electric strength at operating temperature . 12
14 Void . 12
15 Moisture resistance. 12
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 . 16
21 Mechanical strength. 17
22 Construction .18
23 Internal wiring . 20
24 Components . 21
25 Supply connection and external flexible cords. 21

26 Terminals for external conductors . 21
27 Provision for earthing. 21
28 Screws and connections . 22
29 Creepage distance, clearances and distances through insulation . 22
30 Resistance to heat, fire and tracking . 22
31 Resistance to rusting . 22
32 Radiation, toxicity and similar hazards . 22
Annexes . 24
Figure 101 – Splash apparatus. 23

60335-2-42  IEC:2000(E) – 3 –

INTERNATIONAL ELECTROTECHNICAL COMMISSION

____________
SAFETY OF HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –

Part 2-42: Particular requirements for commercial electric forced

convection ovens, steam cookers and steam-convection ovens

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.
International Standard IEC 60335-2-42 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 fourth edition of IEC 60335-2-42 and replaces the third edition, published in 1994,
amendment 1 (1996) and amendment 2 (1998). It also replaces IEC 60335-2-46, published in
1986 and its amendment 1 (1990).

The text of this standard is based on the third edition, amendments 1 and 2, and the following
documents:
FDIS Report on voting
61E/354/FDIS 61E/367/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.

– 4 – 60335-2-42  IEC:2000(E)

This part 2 is to be used in conjunction with the latest edition of IEC 60335-1 and its
amendments. It was established on the basis of the third edition (1991) of that standard.

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 forced

convection ovens, steam cookers and steam-convection ovens

Where a particular subclause of part 1 is not mentioned in this part 2, that subclause applies

as far as is reasonable. Where this standard states "addition", "modification" or

"replacement", the relevant text in part 1 is to be adapted accordingly.

NOTE 1 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 2.
NOTE 2 Subclauses, figures and notes which are additional to those in part 1 are numbered starting from 101.
A bilingual version of this standard may be issued at a later date.

60335-2-42  IEC:2000(E) – 5 –

SAFETY OF HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –

Part 2-42: Particular requirements for commercial electric forced

convection ovens, steam cookers and steam-convection ovens

1 Scope
This clause of part 1 is replaced by:
This standard deals with the safety of electrically operated commercial forced convection
ovens, steam cookers, steam-convection ovens and, exclusive of any other use, steam
generators, not intended for household use, their rated voltage being not more than 250 V
for single-phase appliances connected between one phase and neutral and 480 V for other
appliances.
NOTE 1 These appliances are used for example in kitchens such as in restaurants, canteens, hospitals and
commercial enterprises such as bakeries, butcheries, etc.
The electrical part of appliances making use of other forms of energy is also within the scope
of this standard.
So far as is practicable, this standard deals with the common hazards presented by these
types of appliances.
NOTE 2 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;
– for appliances intended to be used in tropical countries, special requirements may be necessary;
– in many countries additional requirements are specified by the national health authorities, the national
authorities responsible for the protection of labour, the national water supply authorities and similar authorities;
– in many countries additional requirements are specified for pressure appliances.
This standard does not apply to
– appliances where the cooking process is not only carried out by direct steam contact but
also with the food partially or completely immersed in a liquid;
– appliances designed exclusively for industrial purposes;
– appliances intended to be used in locations where special conditions prevail, such as the
presence of a corrosive or explosive atmosphere (dust, vapour or gas);

– continuous process appliances for the mass production of food;
– microwave ovens;
– appliances with electrode heaters.
2 Definitions
This clause of part 1 is applicable except as follows.

– 6 – 60335-2-42  IEC:2000(E)

2.2.4 Addition:
NOTE The rated power input is the sum of the power inputs of all the individual elements in the appliance which

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.
...