IEC 60335-2-61:2002+AMD1:2005+AMD2:2008 CSV

Household and similar electrical appliances - Safety - Part 2-61: Particular requirements for thermal storage room heaters

IEC 60335-2-61:2002+A1:2005+A2:2008 deals with the safety of electric thermal-storage room heaters intended to heat the room in which they are located, their rated voltage being not more than 250 V for single phase and 480 V for other appliances. This consolidated version consists of the second edition (2002), its amendment 1 (2005) and its amendment 2 (2008). Therefore, no need to order amendments in addition to this publication.

Appareils électrodomestiques et analogues - Sécurité - Partie 2-61: Règles particulières pour les appareils de chauffage à accumulation

La CEI 60335-2-61:2002+A1:2005+A2:2008 deals with the safety of electric thermal-storage room heaters intended to heat the room in which they are located, their rated voltage being not more than 250 V for single phase and 480 V for other appliances.  Cette version consolidée comprend la deuxième édition (2002), son amendement 1 (2005) et son amendement 2 (2008). Il n'est donc pas nécessaire de commander les amendements avec cette publication.

General Information

• Status: Published
• Publication Date: 28-Apr-2009
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 13.120 - Domestic safety
• ICS: 97.100.10 - Electric heaters
• Technical Committee: TC 61 - Safety of household and similar electrical appliances
• Current Stage: PPUB - Publication issued
• Start Date: 29-Apr-2009
• Completion Date: 29-Apr-2009

Standards Content (Sample)

IEC 60335-2-61
Edition 2.2 2009-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Household and similar electrical appliances – Safety –
Part 2-61: Particular requirements for thermal storage room heaters

Appareils électrodomestiques et analogues – Sécurité –
Partie 2-61: Règles particulières pour les appareils de chauffage à accumulation
IEC 60335-2-61:2002+A1:2005+A2:2008

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IEC 60335-2-61
Edition 2.2 2009-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Household and similar electrical appliances – Safety –
Part 2-61: Particular requirements for thermal storage room heaters

Appareils électrodomestiques et analogues – Sécurité –
Partie 2-61: Règles particulières pour les appareils de chauffage à accumulation

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CH
CODE PRIX
ICS 13.120; 97.100.10 ISBN 2-8318-9977-X
® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale

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+A2:2008
CONTENTS
FOREWORD.5
INTRODUCTION.5
1 Scope.6
2 Normative references.7
3 Definitions.7
4 General requirement.7
5 General conditions for the tests .8
6 Classification.8
7 Marking and instructions.8
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 .13
15 Moisture resistance.13
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 .15
21 Mechanical strength.15
22 Construction.16
23 Internal wiring.17
24 Components.17
25 Supply connection and external flexible cords .17
26 Terminals for external conductors.17
27 Provision for earthing .17
28 Screws and connections .18
29 Clearances, creepage distances and solid insulation .18
30 Resistance to heat and fire.18
31 Resistance to rusting.18
32 Radiation, toxicity and similar hazards.18

Annexes .20
Annex AA (informative) Immediate surrounds of air-outlet grilles .20

21
Bibliography.

Figure 101 – Device for determining the air temperature rise .19

Table 101 – Temperature rises of surfaces .12

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60335-2-61 © IEC:2002+A1:2005 – 3 –
+A2:2008
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________

HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
SAFETY –

Part 2-61: Particular requirements for thermal-storage room heaters



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
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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 IEC technical committee 61:
Safety of household and similar electrical appliances.
This consolidated version of IEC 60335-2-61 consists of the second edition (2002)
[documents 61/2173/FDIS and 61/2254/RVD], its amendment 1 (2005) [documents
61/2814/FDIS and 61/2854/RVD] and its amendment 2 (2008) [documents 61/3642/FDIS and
61/3682/RVD].
The technical content is therefore identical to the base edition and its amendments and has
been prepared for user convenience.
It bears the edition number 2.2.
A vertical line in the margin shows where the base publication has been modified by
amendments 1 and 2.
The French version of this standard has not been voted upon.

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+A2:2008
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 electric thermal-
storage room heaters.
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 following differences exist in the countries indicated below.
– 7.1: All thermal-storage room heaters have to be marked with a warning against covering (Sweden).
The committee has decided that the contents of the base publication and its amendments 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.

NOTE 4 The attention of National Committees is drawn to the fact that equipment manufacturers and testing
2
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 the amendment 2 be adopted for implementation
nationally not earlier than 12 months or later than 36 months from the date of publication.

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60335-2-61 © IEC:2002+A1:2005 – 5 –
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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 and takes into account the way in which
electromagnetic phenomena can affect the safe operation of appliances.
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.
2
When a part 2 standard does not include additional requirements to cover hazards dealt with
in Part 1, Part 1 applies.
NOTE 1 This means that the technical committees responsible for the part 2 standards have determined that it is
not necessary to specify particular requirements for the appliance in question over and above the general
requirements.
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.
NOTE 2 Horizontal and generic standards covering a hazard are not applicable since they have been taken into
consideration when developing the general and particular requirements for the IEC 60335 series of standards. For
example, in the case of temperature requirements for surfaces on many appliances, generic standards, such as
ISO 13732-1 for hot surfaces, are not applicable in addition to Part 1 or part 2 standards.
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.

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+A2:2008
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
SAFETY –

Part 2-61: Particular requirements for thermal-storage room heaters



1 Scope
This clause of Part 1 is replaced by the following.
This International Standard deals with the safety of electric thermal-storage room heaters
for household and similar purposes that are intended to heat the room in which they are
located, their rated voltage being not more than 250 V for single-phase appliances and 480 V
for other appliances.
Appliances not intended for normal household use but which nevertheless may be a source of
danger to the public, such as appliances intended to be used by laymen in shops, in light
industry and on farms, are within the scope of this standard.
As far as is practicable, this standard deals with the common hazards presented by
appliances that are encountered by all persons in and around the home. However, in general,
it does not take into account:
– persons (including children) whose
2
• physical, sensory or mental capabilities; or
• lack of experience and knowledge
prevents them from using the appliance safely without supervision or instruction;
– children playing with the appliance.
NOTE 101 Attention is drawn to the fact that
– this standard only applies to self-contained thermal-storage room heaters. However, it may be used as a
guide, in so far as it reasonably applies, to determine the requirements and test specifications for other
thermal-storage room heaters;
– for heaters incorporating direct-acting heating elements, IEC 60335-2-30 is also applicable;
– for heaters 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 and similar authorities.
NOTE 102 This standard does not apply to
– appliances intended exclusively for industrial purposes;
– heaters incorporated in the building structure;
– central heating systems;
– heaters for saunas (IEC 60335-2-53);
– flexible sheet heating elements for room heating (IEC 60335-2-96);
– heaters intended to be used in locations where special conditions prevail, such as the presence of a corrosive
or explosive atmosphere (dust, vapour or gas).

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60335-2-61 © IEC:2002+A1:2005 – 7 –
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2 Normative references
This clause of Part 1 is applicable except as follows.
Addition:
IEC 60335-2-30, Household and similar electrical appliances – Safety – Part 2-30: Particular
requirements for room heaters
ISO 3864-1, Graphical symbols – Safety colours and safety signs – Part 1: Design principles
for safety signs in workplaces and public areas
3 Definitions
This clause of Part 1 is applicable except as follows.
3.1.9 Replacement:
normal operation
operation of the appliance under the following conditions
The heater is operated in cycles, each cycle having a duration of 24 h and consisting of a
charging period and a discharging period. The charging period is terminated when all heating
elements are disconnected for the first time by the devices controlling the temperature of the
core (charge controls).
3.101
thermal-storage room heater
heater constructed to store heat obtained from electrical energy in a heat-accumulating core
and to discharge it at any time
3.102
controlled-output heater
thermal-storage room heater, the heat output of which can be controlled by means such as
fans, shutters or flaps
3.103
free-output heater
thermal-storage room heater, the heat output of which is discharged by natural convection
and radiation and can only be varied by adjusting the charge
3.104
rated charging period
longest uninterrupted charging period assigned to the heater by the manufacturer
3.105
rated charge
energy consumption assigned to the heater by the manufacturer for a rated charging period
4 General requirement
This clause of Part 1 is applicable.

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+A2:2008
5 General conditions for the tests
This clause of Part 1 is applicable except as follows.
5.5 Addition:
For controlled-output heaters having auxiliary air-outlets, air is discharged only through the
main outlet into the room where the heater is situated.
NOTE 101 Movable parts include accessories supplied with the heater, such as shelves and humidifiers.
5.6 Addition:
Thermostats sensitive to the room air temperature, such as those having a sensing element
located in the air-inlet, are short-circuited.
5.9 Addition:
When it is specified that direct-acting heating elements are operated together with the storage
heating elements, this only applies if allowed by the construction.
6 Classification
The clause of Part 1 is applicable except as follows.
6.1 Modification:
Thermal-storage room heaters shall be class I, class II or class III.
7 Marking and instructions
The clause of Part 1 is applicable except as follows.
7.1 Modification:
Appliances shall be marked with rated power input.
Addition:
Appliances shall be marked with
– the rated charging period, in hours;
– the mass of the assembled appliance, in kilograms.
For appliances provided with more than one means of connection to the supply, each supply
circuit shall be marked with rated voltage, rated power input and the symbol for nature of
supply.

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60335-2-61 © IEC:2002+A1:2005 – 9 –
+A2:2008
If the temperature rises determined during the tests of Clause 19 exceed the limits specified
in Clause 11, appliances shall be marked with symbol IEC 60417-5641 (DB:2002-10)
combined with the prohibition sign of ISO 3864-1, except for colours, or with the substance of
the following:
WARNING: Do not cover.
NOTE 101 This marking may be on a label that is permanently attached to the appliance.
7.6 Addition:


Do not cover



NOTE This symbol incorporates symbol IEC 60417-5641(DB:2002-10) combined with the prohibition sign of
ISO 3864-1, except for colours.
7.10 Addition:
Charging controls shall not be marked with the off position unless they have a contact
separation in all poles to provide full disconnection under overvoltage category III conditions.
However, disconnection of the neutral pole is not required for single phase appliances
permanently connected to a system with an earthed neutral (TN-S-C system).
7.12 Addition:
The instructions shall be given on a durable card or in a booklet and shall include the
substance of the following:
– these instructions should be retained for future reference;
– fumes may be emitted during the first few operations of the heater and the room should be
kept well ventilated.
The instructions shall also include
– the rated charge;
– the minimum distance to be maintained between the heater and combustible materials,
such as furniture and curtains.
If the temperature rises determined during the tests of Clause 19 exceed the limits specified
in Clause 11, the instructions shall include the substance of the following:
– do not cover;
– do not place objects in contact with the heater.
If the “Do not cover” symbol is marked on the appliance, its meaning shall be explained.
7.12.1 Addition:
The installation instructions shall include the substance of the following:
– the installation of the heater should be carried out by trained personnel;
– if, during reassembly of the heater, a part of the thermal insulation shows damage or
deterioration, it should be replaced by an identical part;

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+A2:2008
– to maintain stability, it is essential that the heater is placed on a level surface and care
should be taken to avoid irregular surfaces, such as may result from carpets or tiled
surrounds partially protruding under the heater.
The installation instructions shall also include
– a circuit diagram with a clear indication of the terminals;
– details for fixing the heater to the floor or for fixing the heater to the wall, including the
minimum mounting height (if applicable).
7.14 Addition:
The height of the “Do not cover” symbol shall be at least 15 mm.
The height of the words “Do not cover” shall be at least 3 mm.
Compliance is checked by measurement.
7.15 Addition:
The marking concerning covering shall be visible after the heater has been installed.
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 not applicable.
10 Power input and current
This clause of Part 1 is applicable except as follows.
10.1 Addition:
Heaters are installed as specified in 11.2.
The power input of the storage heating elements is measured during the charging period, any
fans, shutters, flaps and similar devices being adjusted to cause minimum heat discharge.
The power input of direct-acting heating elements is measured during a discharge period, any
fans, shutters, flaps and similar devices being adjusted to cause maximum heat discharge.
The total power input for each means of connection to the supply is measured with all controls
adjusted to the position resulting in the highest power input.
NOTE 101 For heaters incorporating motors, the tolerances specified for heating appliances apply.

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60335-2-61 © IEC:2002+A1:2005 – 11 –
+A2:2008
10.101 The heater shall accept at least 100 % of the rated charge.
Compliance is ch
...