EN IEC 60675-3:2021

Household electric direct-acting room heaters - Methods for measuring performance - Part 3: Additional provisions for the measurement of the radiation efficiency

IEC 60675-3:2020 applies to electric direct-acting room heaters. This document defines performance characteristics related to the radiant effect and specifies methods for measuring the radiation efficiency for the information of users. This document is used to measure the radiation efficiency of direct-acting room heaters. This International Standard is to be used in conjunction with IEC 60675:1994, IEC 60675:1994/AMD1:1998 and IEC 60675:1994/AMD2:2018.

Elektrische Haushalt-Direktheizgeräte - Prüfverfahren zur Bestimmung der Gebrauchseigenschaft - Teil 3: Zusätzliche Bestimmungen für die Messung des Strahlungswirkungsgrades

Appareils électrodomestiques de chauffage des locaux à action directe - Méthodes de mesure de l'aptitude à la fonction - Partie 3: Dispositions supplémentaires pour la mesure du rendement de rayonnement

L'IEC 60675-3:2020 s'applique aux appareils électriques de chauffage des locaux à action directe. Le présent document définit les caractéristiques d'aptitude à la fonction associées à l'effet rayonnant et spécifie les méthodes de mesure du rendement de rayonnement à titre d'information pour les utilisateurs. Le présent document a pour objet de mesurer le rendement de rayonnement des appareils de chauffage des locaux à action directe. La présente Norme internationale doit être utilisée conjointement avec l'IEC 60675:1994, l'IEC 60675:1994/AMD1:1998 et l'IEC 60675:1994/AMD2:2018.

Gospodinjski sobni neposredni grelniki - Metode za merjenje funkcionalnost - 3. del: Dodatna določila za merjenje učinkovitosti sevanja

General Information

• Status: Published
• Publication Date: 21-Jan-2021
• ICS: 97.100.10 - Electric heaters
• Technical Committee: CLC/TC 59X - Consumer information related to household electrical appliances
• Drafting Committee: IEC/SC 59C - IEC_SC_59C
• Current Stage: 6060 - Document made available - Publishing
• Start Date: 22-Jan-2021
• Completion Date: 22-Jan-2021
• Ref Project: SIST EN IEC 60675-3:2021 - Household electric direct-acting room heaters - Methods for measuring performance - Part 3: Additional provisions for the measurement of the radiation efficiency

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN IEC 60675-3:2021
01-marec-2021
Gospodinjski sobni neposredni grelniki - Metode za merjenje funkcionalnost - 3.
del: Dodatna določila za merjenje učinkovitosti sevanja

Household electric direct-acting room heaters - Methods for measuring performance -

Part 3: Additional provisions for the measurement of the radiation efficiency
Ta slovenski standard je istoveten z: EN IEC 60675-3:2021
ICS:
17.240 Merjenje sevanja Radiation measurements
97.100.10 Električni grelniki Electric heaters
SIST EN IEC 60675-3:2021 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN IEC 60675-3:2021
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SIST EN IEC 60675-3:2021
EUROPEAN STANDARD EN IEC 60675-3
NORME EUROPÉENNE
EUROPÄISCHE NORM
January 2021
ICS 97.100.10
English Version
Household electric direct-acting room heaters - Methods for
measuring performance - Part 3: Additional provisions for the
measurement of the radiation efficiency
(IEC 60675-3:2020)

Appareils électrodomestiques de chauffage des locaux à Elektrische Haushalt-Direktheizgeräte - Prüfverfahren zur

action directe - Méthodes de mesure de l'aptitude à la Bestimmung der Gebrauchseigenschaft - Teil 3: Zusätzliche

fonction - Partie 3: Dispositions supplémentaires pour la Bestimmungen für die Messung der

mesure du rendement de rayonnement Strahlungswirkungsgrades
(IEC 60675-3:2020) (IEC 60675-3:2020)

This European Standard was approved by CENELEC on 2021-01-08. 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 CEN-CENELEC

Management Centre 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 CEN-CENELEC Management Centre has the

same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,

Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the

Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2021 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.

Ref. No. EN IEC 60675-3:2021 E
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SIST EN IEC 60675-3:2021
EN IEC 60675-3:2021 (E)
European foreword

The text of document 59C/257/FDIS, future edition 1 of IEC 60675-3, prepared by SC 59C "Electrical

heating appliances for household and similar purposes" of IEC/TC 59 "Performance of household and

similar electrical appliances" was submitted to the IEC-CENELEC parallel vote and approved by

CENELEC as EN IEC 60675-3:2021.
The following dates are fixed:

• latest date by which the document has to be implemented at national (dop) 2021-10-08

level by publication of an identical national standard or by endorsement

• latest date by which the national standards conflicting with the (dow) 2024-01-08

document have to be withdrawn

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.

Endorsement notice

The text of the International Standard IEC 60675-3:2020 was approved by CENELEC as a European

Standard without any modification.

In the official version, for Bibliography, the following note has to be added for the standard indicated:

IEC 60531 NOTE Harmonized as EN 60531
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SIST EN IEC 60675-3:2021
EN IEC 60675-3:2021 (E)
Annex ZA
(normative)
Normative references to international publications with their
corresponding European publications

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements of this document. For dated references, only the edition cited applies. For

undated references, the latest edition of the referenced document (including any amendments)

applies.

NOTE 1 Where an International Publication has been modified by common modifications, indicated by (mod),

the relevant EN/HD applies.

NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available

here: www.cenelec.eu.

Replace the references in Annex ZA of EN 60675:1995 with the following references:

Publication Year Title EN/HD Year
IEC 60675 1994 Household electric direct-acting room EN 60675 1995
heaters - Methods for measuring
performance
+ A1 1998 + A1 1998
+ A2 2018 + A2 2018
- - + A11 2019
IEC 60675-2 2020 Household electric direct-acting room EN IEC 60675-2 2021
heaters - Methods for measuring
performance - Part 2: Additional provisions
for the measurement of the radiation factor
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SIST EN IEC 60675-3:2021
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SIST EN IEC 60675-3:2021
IEC 60675-3
Edition 1.0 2020-12
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Household electric direct-acting room heaters – Methods for measuring
performance –
Part 3: Additional provisions for the measurement of radiation efficiency
Appareils électrodomestiques de chauffage des locaux à action directe –
Méthodes de mesure de l'aptitude à la fonction –
Partie 3: Dispositions supplémentaires pour la mesure du rendement de
rayonnement
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 97.100.10 ISBN 978-2-8322-9088-0

Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
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SIST EN IEC 60675-3:2021
– 2 – IEC 60675-3:2020 © IEC 2020
CONTENTS

FOREWORD ........................................................................................................................... 4

1 Scope .............................................................................................................................. 6

2 Normative references ...................................................................................................... 6

3 Terms, definitions and symbols........................................................................................ 6

4 Classification ................................................................................................................... 9

5 List of measurements ...................................................................................................... 9

6 General conditions for measurements .............................................................................. 9

7 Dimensions, mass and means of connection to the supply ............................................... 9

8 Temperature rises of air-outlet grilles and external surfaces ............................................ 9

9 Temperature rises of surfaces surrounding the heater ................................................... 10

10 Warming-up time of the heater....................................................................................... 10

11 Stability of room temperature ......................................................................................... 10

12 Set-back ........................................................................................................................ 10

13 Frost protection temperature .......................................................................................... 10

14 Inrush current ................................................................................................................ 10

15 Effect of radiant heat ..................................................................................................... 10

15.1 Determination of radiant factor .............................................................................. 10

15.2 Determination of radiation efficiency ..................................................................... 10

16 Measurement of the usable power ................................................................................. 10

17 Verification of the maximum room temperature promoted by the manufacturer .............. 10

Annex A (normative) Climatic test room ............................................................................... 11

Annex B (informative) Information provided at point-of-sale ................................................. 12

Annex C (informative) Test report form ................................................................................ 13

Annex AA (informative) Method for measuring the radiation efficiency ................................. 14

AA.1 General ................................................................................................................. 14

AA.2 Equations ............................................................................................................. 14

AA.2.1 Radiation efficiency ....................................................................................... 14

AA.2.2 Dynamic factor .............................................................................................. 16

AA.3 Classification ........................................................................................................ 17

AA.3.1 Categories ..................................................................................................... 17

AA.3.2 Type .............................................................................................................. 17

AA.3.3 List of measurements and calculations .......................................................... 17

AA.4 General conditions ................................................................................................ 17

AA.4.1 General ......................................................................................................... 17

AA.4.2 Power stabilizer ............................................................................................. 17

AA.4.3 Multimeter ..................................................................................................... 17

AA.4.4 Variac ............................................................................................................ 18

AA.4.5 Infrared camera ............................................................................................. 18

AA.4.6 Maximum size of active radiant heating surfaces ........................................... 18

AA.4.7 Heat-reflection devices .................................................................................. 18

AA.4.8 Technical data ............................................................................................... 18

AA.4.9 Rated power .................................................................................................. 19

AA.4.10 Testing chamber ............................................................................................ 19

AA.5 Examinee .............................................................................................................. 19

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SIST EN IEC 60675-3:2021
IEC 60675-3:2020 © IEC 2020 – 3 –

AA.5.1 Declaration .................................................................................................... 19

AA.5.2 Mounting devices, temperature control, multi-stage heater settings ............... 20

AA.5.3 Model series .................................................................................................. 20

AA.5.4 Multiple active radiant heating surfaces ......................................................... 21

AA.6 Test method .......................................................................................................... 21

AA.6.1 Emissivity ...................................................................................................... 21

AA.6.2 Boundary lines ............................................................................................... 21

AA.6.3 Pixel temperature .......................................................................................... 21

AA.6.4 Positioning ..................................................................................................... 22

AA.6.5 Steady-state operating condition .................................................................... 25

AA.6.6 Calculation of the nominal radiation efficiency ............................................... 27

AA.6.7 Nominal heat-up time period .......................................................................... 27

AA.6.8 Dynamic factor .............................................................................................. 28

AA.6.9 Test method .................................................................................................. 28

AA.7 Test report ............................................................................................................ 29

AA.8 Verification system ................................................................................................ 30

AA.8.1 General ......................................................................................................... 30

AA.8.2 Purpose of master heaters ............................................................................. 30

AA.8.3 Verification procedure .................................................................................... 30

AA.8.4 Compliance ................................................................................................... 30

AA.9 Measuring emissivity by combining temperature reference method and

masking tape reference method ............................................................................ 30

AA.9.1 Combining procedure ..................................................................................... 30

AA.9.2 The temperature reference method ................................................................ 31

AA.9.3 The masking tape reference method .............................................................. 31

AA.10 Measuring emissivity by using an Ulbricht sphere ................................................. 32

AA.10.1 General ......................................................................................................... 32

AA.10.2 Measurement method .................................................................................... 33

AA.10.3 Measurement range ....................................................................................... 34

AA.10.4 Calculation of thermal emissivity .................................................................... 34

AA.10.5 Calculation of the hemispherical emissivity .................................................... 34

AA.11 Radiant heat correction factor ............................................................................... 35

AA.12 Example of the test report ..................................................................................... 36

AA.13 Example of model series test report ...................................................................... 41

Bibliography .......................................................................................................................... 43

Figure AA.1 – Positioning of a wall-mounted heater and the infrared camera in the

testing chamber .................................................................................................................... 23

Figure AA.2 – Positioning of a ceiling-mounted heater and the infrared camera in the

testing chamber .................................................................................................................... 24

Figure AA.3 – Positioning of a floor-standing heater and the infrared camera in the

testing chamber .................................................................................................................... 25

Figure AA.4 – Schematics of a FTIR-spectrometer for measuring the directional-

spectral reflectivity of an examinee ....................................................................................... 33

Figure AA.5 – Schematics of the reference measurement of the directional-

hemispherical spectral reflexivity .......................................................................................... 34

Table 100 – Symbols used in this document ........................................................................... 9

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SIST EN IEC 60675-3:2021
– 4 – IEC 60675-3:2020 © IEC 2020
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
HOUSEHOLD ELECTRIC DIRECT-ACTING ROOM HEATERS –
METHODS FOR MEASURING PERFORMANCE –
Part 3: Additional provisions for the measurement of radiation efficiency
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 itself does not provide any attestation of conformity. Independent certification bodies provide conformity

assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any

services carried out by independent certification bodies.

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.

International Standard IEC 60675-3 has been prepared by subcommittee 59C: Electrical

heating appliances for household and similar purposes, of IEC technical committee 59:

Performance of household and similar electrical appliances.
The text of this International Standard is based on the following documents:
FDIS Report on voting
59C/257/FDIS 59C/261/RVD

Full information on the voting for the approval of this International Standard can be found in the

report on voting indicated in the above table.

This document has been drafted in accordance with the ISO/IEC Directives, Part 2.

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SIST EN IEC 60675-3:2021
IEC 60675-3:2020 © IEC 2020 – 5 –
This International Standard is to be used in conjunction with IEC 60675:1994,

IEC 60675:1994/AMD1:1998 and IEC 60675:1994/AMD2:2018. This document supplements or

modifies the corresponding clauses of IEC 60675:1994. Where the text indicates an "addition"

to or a "replacement" of the relevant provision of IEC 60675:1994, these changes are made to

the relevant text of IEC 60675:1994. Where no change is necessary, the words "This clause of

IEC 60675:1994 is applicable" are used. When a particular subclause of IEC 60675:1994 is not

mentioned in this part, that subclause applies as far as is reasonable.

Additional specific provisions to those in Part 1, given as individual clauses or subclauses, are

numbered starting from 101.
NOTE 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.
In this document, the following print types are used:

– terms listed in Clause 3 of this document and of IEC 60675:1994 and IEC 60675-2:2020:

Arial bold.
– test specifications: in italic type.

A list of all parts in the IEC 60675 series, published under the general title Household electric

direct-acting room heaters – Methods for measuring performance, can be found on the IEC

website.

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

stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to

the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.

IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates

that it contains colours which are considered to be useful for the correct understanding

of its contents. Users should therefore print this document using a colour printer.

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SIST EN IEC 60675-3:2021
– 6 – IEC 60675-3:2020 © IEC 2020
HOUSEHOLD ELECTRIC DIRECT-ACTING ROOM HEATERS –
METHODS FOR MEASURING PERFORMANCE –
Part 3: Additional provisions for the measurement of radiation efficiency
1 Scope
This clause of IEC 60675:1994 is applicable, with the following modification:
Replace the first paragraph with the following content:
This document applies to electric direct-acting room heaters.

This document defines performance characteristics related to the radiant effect and specifies

methods for measuring the radiation efficiency for the information of users.

This document is used to measure the radiation efficiency of direct-acting room heaters.

2 Normative references
Replace Clause 2 of IEC 60675:1994 with the following content:

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements of this document. For dated references, only the edition cited applies.

For undated references, the latest edition of the referenced document (including any

amendments) applies.

IEC 60675:1994, Household electric direct-acting room heaters – Methods for measuring

performance
IEC 60675:1994/AMD1:1998
IEC 60675:1994/AMD2:2018

IEC 60675-2:2020, Household electric direct-acting room heaters – Methods for measuring

performance – Part 2: Additional provisions for the measurement of the radiation factor

3 Terms, definitions and symbols
Replace Clause 3 of IEC 60675:1994 with the following content:

For the purposes of this document, the terms and definitions given in IEC 60675:1994,

IEC 60675:1994/AMD1:1998, IEC 60675-2:2020 and the following apply.

ISO and IEC maintain terminological databases for use in standardization at the following

addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.101
radiant factor

ratio of the measured infrared heat output to the measured total energy input, expressed in %

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SIST EN IEC 60675-3:2021
IEC 60675-3:2020 © IEC 2020 – 7 –

Note 1 to entry: The radiant factor can be measured for panel heaters, convector heaters and radiant heaters

3.102
radiation efficiency

ratio of the heat flow into a (testing) chamber by radiation exchange between an active radiant

heating surface and the inner surfaces of the chamber to the nominal electric power of a heater

inside this testing chamber

Note 1 to entry: The radiant factor and the radiation efficiency are measured on different physical background

and not comparable.
3.103
active radiant heating surface
room-facing surfaces of heaters

Note 1 to entry: Areas with average temperatures below 40 °C, like frames, mounting devices, operation panels,

and other additions, shall be excluded from being part of the respective active radiant heating surface.

3.104
rated power

electrical input Q in W, measured in steady-state conditions calculated as the average of the

electrical input during the measurement of the radiation efficiency over the period necessary

for confirming steady-state conditions

Note 1 to entry: Steady-state conditions are reached when the heater's surface temperature does not vary by more

than 1 K over 10 min.
3.105
emissivity

ratio of radiant flux of a specific surface as compared to the radiant flux of a standard black

body, at the same temperature and in the same environment
3.106
examinee
heater that is being tested in accordance with this document
3.107
infrared camera

measurement device for recording and pictorial representation of the surface temperatures of

heaters
3.108
low temperature infrared heater

heater without visibly glowing parts, with one or more active radiant heating surfaces, each

with an average temperature between 40 °C and 200 °C, and a nominal radiation efficiency

of 40 % or higher as determined by this document

Note 1 to entry: “Without visibly glowing parts" denotes that, in case of an installed heater, those parts cannot be

detected with the naked eye from a point situated 2 m in front of the heater and 1,2 m above the floor.

3.109
model

heater with the identical construction and appearance as other heaters made by the same

manufacturer
3.110
model series
group of models
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SIST EN IEC 60675-3:2021
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3.111
nominal heat-up time

time period from turning-on the heater until arriving at 2/3 of the temperature in the steady-

state operating condition of the heater
3.112
nominal radiation efficiency

ratio of the heat flow into a testing chamber by radiation exchange between an active radiant

heating surface and the inner surfaces of the chamber to the nominal electric power of a heater

inside this testing chamber

Note 1 to entry: For calculation of the nominal radiation efficiency, see AA.2.1.1.

3.113
dynamic factor
parameter that can be used for benchmarking of low temperature infrared heaters

Note 1 to entry: This parameter is based on the nominal radiation efficiency and the nominal heat-up time.

Note 2 to entry: For the calculation of the dynamic factor, see AA.2.2.
3.114
radiant heat correction factor

parameter that specifies how much of the radiant flux of a heater is absorbed in the air

3.115
steady-state operating condition

status of heater with steady-state operating temperature of its active radiant heating surfaces

over a predetermined period of time
3.116
testing chamber
standardized environment for testing heaters
3.117
corrected radiation efficiency
nominal radiation eff
...