Household and similar electrical appliances - Safety - Part 2-71: Particular requirements for electrical heating appliances for breeding and rearing animals

Deals with the safety of all kinds of electrical heating appliances for rearing and breeding livestock. Examples are heat-radiating appliances, electrical sitting-hens, incubators, chicken breeding units and heating plates for animals. For room heaters, see EN 60335-2-30. For flexible-sheet heating elements for room heating, see EN 60335-2-96.

Sicherheit elektrischer Geräte für den Hausgebrauch und ähnliche Zwecke - Teil 2-71: Besondere Anforderungen für Elektrowärmegeräte für Tieraufzucht und Tierhaltung

Appareils électrodomestiques et analogues - Sécurité - Partie 2-71: Règles particulières pour les appareils de chauffage électrique destinés à la reproduction et à l'élevage des animaux

En anglais seulement.

Gospodinjski in podobni električni aparati - Varnost - 2-71. del: Posebne zahteve za električne grelne aparate za vzrejo in rejo živali (IEC 60335-2-71:2002; spremenjen)

General Information

Status
Published
Publication Date
12-Aug-2003
Current Stage
6060 - Document made available
Due Date
13-Aug-2003
Completion Date
13-Aug-2003

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SLOVENSKI SIST EN 60335-2-71:2003
STANDARD
december 2003
Gospodinjski in podobni električni aparati - Varnost - 2-71. del: Posebne
zahteve za električne grelne aparate za vzrejo in rejo živali (IEC 60335-2-
71:2002; spremenjen)
Household and similar electrical appliances - Safety - Part 2-71: Particular
requirements for electrical heating appliances for breeding and rearing animals
ICS 65.040.10 Referenčna številka
SIST EN 60335-2-71:2003(en)

© Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno

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INTERNATIONAL IEC
STANDARD 60335-2-71
Second edition
2002-03
Household and similar electrical appliances –
Safety –
Part 2-71:
Particular requirements for electrical heating
appliances for breeding and rearing animals
 IEC 2002 Copyright - all rights reserved

No part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical,

including photocopying and microfilm, without permission in writing from the publisher.

International Electrotechnical Commission, 3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, Switzerland

Telephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmail@iec.ch Web: www.iec.ch

PRICE CODE
Commission Electrotechnique Internationale
International Electrotechnical Commission
МеждународнаяЭлектротехническаяКомиссия
For price, see current catalogue
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60335-2-71  IEC:2005 – 3 –
CONTENTS

FOREWORD...........................................................................................................................5

INTRODUCTION.....................................................................................................................9

1 Scope.............................................................................................................................11

2 Normative references .....................................................................................................11

3 Definitions ......................................................................................................................11

4 General requirement.......................................................................................................13

5 General conditions for the tests ......................................................................................13

6 Classification..................................................................................................................13

7 Marking and instructions.................................................................................................15

8 Protection against access to live parts............................................................................19

9 Starting of motor-operated appliances ............................................................................19

10 Power input and current .................................................................................................19

11 Heating ..........................................................................................................................19

12 Void................................................................................................................................21

13 Leakage current and electric strength at operating temperature......................................21

14 Transient overvoltages ...................................................................................................21

15 Moisture resistance ........................................................................................................21

16 Leakage current and electric strength.............................................................................21

17 Overload protection of transformers and associated circuits ...........................................21

18 Endurance......................................................................................................................21

19 Abnormal operation ........................................................................................................23

20 Stability and mechanical hazards ...................................................................................23

21 Mechanical strength .......................................................................................................25

22 Construction ...................................................................................................................25

23 Internal wiring.................................................................................................................29

24 Components ...................................................................................................................29

25 Supply connection and external flexible cords ................................................................29

26 Terminals for external conductors...................................................................................31

27 Provision for earthing .....................................................................................................31

28 Screws and connections .................................................................................................31

29 Clearances, creepage distances and solid insulation ......................................................31

30 Resistance to heat, and fire............................................................................................31

31 Resistance to rusting......................................................................................................31

32 Radiation, toxicity and similar hazards............................................................................31

Annexes ...............................................................................................................................33

Bibliography..........................................................................................................................33

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60335-2-71  IEC:2005 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
___________
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
SAFETY –
Part 2-71: Particular requirements for electrical heating appliances
for breeding and rearing animals
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 provides no marking procedure to indicate its approval and cannot be rendered responsible for any

equipment declared to be in conformity with an IEC Publication.

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 part of International Standard IEC 60335 has been prepared by subcommittee 61H:

Safety of electrically-operated farm appliances, of IEC technical committee 61: Safety of

household and similar electrical appliances.

This second edition cancels and replaces the first edition published in 1993 and its

amendments 1 (1996) and 2 (1999). It constitutes a technical revision.
This bilingual version (2005-06) replaces the English version.
The text of this part of IEC 60335 is based on the following documents:
FDIS Report on Voting
61H/166/FDIS 61H/171/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.
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60335-2-71  IEC:2005 – 7 –
The French version of this standard has not been voted upon.

This part 2 is to be used in conjunction with the latest edition of IEC 60335-1 and its

amendments. It was established on the basis of the fourth edition (2001) of that standard.

NOTE 1 When “Part 1” is mentioned in this standard, it refers to IEC 60335-1.

This part 2 supplements or modifies the corresponding clauses in IEC 60335-1, so as to

convert that publication into the IEC standard: Safety requirements for electrical heating

appliances for breeding and rearing animals.

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 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

associated noun are also in bold.
The following differences exist in the countries indicated below:
6.1: Class II appliances to be used on the floor are allowed (Australia).
21: Additional tests are made (Australia).
25.7: Ordinary PVC sheathed supply cords are permitted (Australia, New Zealand).

The committee has decided that the contents of this publication will remain unchanged until

the maintenance result 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.
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60335-2-71  IEC:2005 – 9 –
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 which impair the level of safety covered by these requirements.

An appliance employing materials or having forms of construction differing from those detailed

in the requirements of this standard may be examined and tested according to the intent of

the requirements and, if found to be substantially equivalent, may be considered to comply

with the standard.
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60335-2-71  IEC:2005 – 11 –
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
SAFETY –
Part 2-71: Particular requirements for electrical heating appliances
for breeding and rearing animals
1 Scope
This clause of Part 1 is replaced by the following.

This standard deals with the safety of all kinds of electrical heating appliances used for

livestock rearing and breeding, such as: heat-radiating appliances, electrical sitting-hens,

incubators, chicken breeding units and heating plates for animals, the rated voltage of

the appliances being not more than 250 V for single-phase appliances and 480 V for other

appliances.

NOTE 101 This standard applies to heating appliances used for livestock rearing and breeding, that include an

electrical motor.
NOTE 102 Attention is drawn to the fact that:

– for appliances intended to be used in vehicles or on board ships or aircraft, additional requirements may be

necessary;

– in many countries, additional requirements are specified by the national health authorities, the national

authorities responsible for the protection of labour, the national water supply authorities and similar authorities.

NOTE 103 This standard does not apply to:
– appliances designed exclusively for industrial purposes;

– appliances intended to be used in locations where special conditions prevail, such as the presence of a

corrosive or explosive atmosphere (dust, vapour or gas);
– heating units embedded in the floor;
– flexible sheet heating elements for room heating (IEC 60335-2-96);
– room heaters (IEC 60335-2-30).
2 Normative references
This clause of Part 1 is applicable except as follows.
Addition:
IEC 60068-2-11:1981, Environmental testing – Part 2: Tests. Test Ka: Salt mist
IEC 61184: Bayonet lampholders
3 Definitions
This clause of Part 1 is applicable except as follows.
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60335-2-71  IEC:2005 – 13 –
3.1.9 Replacement:
normal operation
operation of the appliance as in normal use, in still air
3.101
heat-radiating appliance
electrical heating appliance that conveys the effective heat mainly by radiation

NOTE Appliances of this type that when operated under conditions of normal operation, have a temperature rise

not exceeding 95 K, measured at the hottest point on the radiator, are considered to be heating plates for

animals and not heat-radiating appliances.
3.102
heating plate for animals

appliance mainly intended to be fixed in stables or in chicken breeding units or intended to

be laid on the floor
3.103
electrical sitting-hen

appliance placed on the floor that has feet or hiding-holes enabling chickens to hide under it,

the chickens being warmed by an overhead heating plate
3.104
chicken breeding units
appliance for the breeding of chickens on several su
...

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