IEC 60335-2-37:2000

INTERNATIONAL IEC
STANDARD
60335-2-37
Fourth edition
2000-02
Safety of household and similar electrical
appliances –
Part 2-37:
Particular requirements for commercial electric
deep fat fryers
Sécurité des appareils électrodomestiques et analogues –
Partie 2-37:
Règles particulières pour les friteuses électriques
à usage collectif
Reference number
Numbering
As from 1 January 1997 all IEC publications are issued with a designation in the
60000 series.
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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
60335-2-37
Fourth edition
2000-02
Safety of household and similar electrical
appliances –
Part 2-37:
Particular requirements for commercial electric
deep fat fryers
Sécurité des appareils électrodomestiques et analogues –
Partie 2-37:
Règles particulières pour les friteuses 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: +41 22 919 0300 e-mail: inmail@iec.ch IEC web site http://www.iec.ch
Commission Electrotechnique Internationale
PRICE CODE
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International Electrotechnical Commission
For price, see current catalogue

– 2 – 60335-2-37 © IEC:2000(E)

CONTENTS
Page
FOREWORD . 3

Clause
1 Scope . 5

2 Definitions. 5

3 General requirement . 6
4 General conditions for the tests . 6
5 Void . 7
6 Classification . 7
7 Marking and instructions . 7
8 Protection against access to live parts . 9
9 Starting of motor-operated appliances. 9
10 Power input and current . 10
11 Heating . 10
12 Void . 11
13 Leakage current and electric strength at operating temperature . 11
14 Void . 11
15 Moisture resistance. 11
16 Leakage current and electric strength . 13
17 Overload protection of transformers and associated circuits. 13
18 Endurance .13
19 Abnormal operation. 13
20 Stability and mechanical hazards . 14
21 Mechanical strength. 14
22 Construction .15
23 Internal wiring . 18
24 Components . 18
25 Supply connection and external flexible cords. 18

26 Terminals for external conductors . 19
27 Provision for earthing. 19
28 Screws and connections . 19
29 Creepage distances, clearances and distances through insulation . 19
30 Resistance to heat, fire and tracking . 19
31 Resistance to rusting . 20
32 Radiation, toxicity and similar hazards . 20
Figure 101. 21
Annexes . 22

60335-2-37 © IEC:2000(E) – 3 –

INTERNATIONAL ELECTROTECHNICAL COMMISSION

____________
SAFETY OF HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –

Part 2-37: Particular requirements for commercial electric

deep fat fryers
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 60335-2-37 has been prepared by subcommittee 61E: Safety of
electrical commercial catering equipment, of IEC technical committee 61: Safety of household
and similar electrical appliances.
If forms the fourth edition of IEC 60335-2-37 and cancels and replaces the third edition,
published in 1994, its amendment 1 (1996) and amendment 2 (1998).
The text of this standard is based on the third edition, amendments 1 and 2 and the following

documents:
FDIS Report on voting
61E/348/FDIS 61E/362/RVD
Full information on the voting for the approval of this part 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 third edition (1991) of that standard.

– 4 – 60335-2-37 © IEC:2000(E)

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 deep fatfryers.

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.

60335-2-37 © IEC:2000(E) – 5 –

SAFETY OF HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –

Part 2-37: Particular requirements for commercial electric

deep fat fryers
1 Scope
This clause of part 1 is replaced by:

This standard deals with the safety of electrically operated commercial deep fat fryers
rated voltage
including pressurized types not intended for household use, their 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 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 Definitions
This clause of part 1 is applicable except as follows.
2.2.4 Addition:
rated power input
NOTE The 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
2.2.9 Replacement:
normal operation: Operation of the appliance under the following conditions:
The appliance is filled with oil to the minimum indicated level.

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The thermal control is set at the maximum setting. Lids, if provided, are left in the open
position or removed unless the manufacturer's instructions indicate that the appliance is

designed for operation with the lid closed.

Motors incorporated in the appliance are operated in the intended manner under the most

severe conditions which can be expected in normal use taking into account the manufacturer's

instructions.
2.2.101
deep fat fryer
an appliance provided with one or more containers in which the food to be cooked is
immersed in the frying medium. The container(s) may be fixed, removable, lifting, tilting, etc.
The pres
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