IEC TR 62970:2016
(Main)Guidance on how to conduct round robin tests for household and similar electrical appliances
Guidance on how to conduct round robin tests for household and similar electrical appliances
IEC TR 62970:2016(E) provides guidance for carrying out round robin tests (RRT) and hence for the determination of levels of repeatability (intra-laboratory variability) and reproducibility (inter-laboratory variability) for household and similar electrical appliances. This document can also be used to verify the measurement methods, to improve the measurement method, and to qualify laboratories. It is not applicable for the determination of production variation for a particular product. General advice on proficiency testing of laboratories is given in ISO/IEC 17043. This document can be used in addition to ISO/IEC 17043.
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IEC TR 62970 ®
Edition 1.0 2016-06
TECHNICAL
REPORT
Guidance on how to conduct round robin tests for household and similar
electrical appliances
All rights reserved. Unless otherwise specified, 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
either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC
copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
your local IEC member National Committee for further information.
IEC Central Office Tel.: +41 22 919 02 11
3, rue de Varembé Fax: +41 22 919 03 00
CH-1211 Geneva 20 info@iec.ch
Switzerland www.iec.ch
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.
About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigenda or an amendment might have been published.
IEC Catalogue - webstore.iec.ch/catalogue Electropedia - www.electropedia.org
The stand-alone application for consulting the entire The world's leading online dictionary of electronic and
bibliographical information on IEC International Standards, electrical terms containing 20 000 terms and definitions in
Technical Specifications, Technical Reports and other English and French, with equivalent terms in 15 additional
documents. Available for PC, Mac OS, Android Tablets and languages. Also known as the International Electrotechnical
iPad. Vocabulary (IEV) online.
IEC publications search - www.iec.ch/searchpub IEC Glossary - std.iec.ch/glossary
The advanced search enables to find IEC publications by a 65 000 electrotechnical terminology entries in English and
variety of criteria (reference number, text, technical French extracted from the Terms and Definitions clause of
committee,…). It also gives information on projects, replaced IEC publications issued since 2002. Some entries have been
and withdrawn publications. collected from earlier publications of IEC TC 37, 77, 86 and
CISPR.
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details all new publications released. Available online and If you wish to give us your feedback on this publication or
also once a month by email. need further assistance, please contact the Customer Service
Centre: csc@iec.ch.
IEC TR 62970 ®
Edition 1.0 2016-06
TECHNICAL
REPORT
Guidance on how to conduct round robin tests for household and similar
electrical appliances
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 97.030 ISBN 978-2-8322-3488-4
– 2 – IEC TR 62970:2016 © IEC 2016
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references. 6
3 Terms and definitions . 6
4 Process and responsibilities . 7
4.1 Process . 7
4.1.1 Product to be tested . 7
4.1.2 Parameters to be tested . 7
4.1.3 Measurement procedure . 8
4.1.4 RRT procedure . 8
4.2 Responsibilities . 9
4.2.1 Contracting body . 9
4.2.2 Coordinator . 9
4.2.3 Subcontractor . 9
4.2.4 Financing of RRT . 9
5 Testing laboratories . 9
5.1 Potential laboratories . 9
5.2 Announcement . 9
5.2.1 General . 9
5.2.2 Questionnaire . 9
5.2.3 Assessment of selection of laboratories . 10
5.3 Selection of laboratories . 10
5.4 Final list of laboratories . 10
6 Transportation of the product . 10
6.1 Logistics . 10
6.2 Packaging . 10
7 Test . 10
7.1 Execution of test . 10
7.2 Laboratory visit . 11
7.3 Transmission of result . 11
8 Analysis, report and termination . 11
8.1 Analysis . 11
8.2 Report . 11
8.2.1 Draft report . 11
8.2.2 Content of the internal report . 11
8.3 Termination and publication of final external report . 11
Bibliography . 13
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
GUIDANCE ON HOW TO CONDUCT ROUND ROBIN TESTS
FOR HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES
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.
The main task of IEC technical committees is to prepare International Standards. However, a
technical committee may propose the publication of a Technical Report when it has collected
data of a different kind from that which is normally published as an International Standard, for
example "state of the art".
IEC TR 62970, which is a Technical Report, has been prepared by IEC technical committee
59: Performance of household and similar electrical appliances.
This Technical Report is based on EN TR 50619:2014.
The text of this Technical Report is based on the following documents:
Enquiry draft Report on voting
59/627/DTR 59/652/RVC
Full information on the voting for the approval of this Technical Report can be found in the
report on voting indicated in the above table.
– 4 – IEC TR 62970:2016 © IEC 2016
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC website 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.
A bilingual version of this publication may be issued at a later date.
INTRODUCTION
It is the responsibility of each standardization committee testing household and similar
electrical appliances to establish the repeatability and reproducibility of the measurement
standards developed.
Results from inter-laboratory comparisons are important for
a) identification of interlaboratory differences;
b) establishment of the effectiveness and comparability of test or measurement methods;
c) validation of uncertainties;
d) evaluation of the performance of laboratories for specific tests or measurements and
monitoring laboratories' continuing performance;
e) identification of problems in laboratories and initiation of actions for improvement which,
for example, may be related to inadequate test or measurement procedures, effectiveness
of staff training and supervision, or calibration of equipment; and
f) education of participating laboratories based on the outcomes of such comparisons.
The need for ongoing confidence in laboratory performance is not only essential for
laboratories and their contractors but also for other interested parties, such as regulators,
laboratory accreditation bodies and other organizations that specify requirements for
laboratories. ISO/IEC 17011 requires accreditation bodies to take account of laboratories'
participation and performance in proficiency testing.
In this respect, round robin testing was widely made in the past by IEC TC 59 for the
development of measurement procedures for the purpose of EU regulatory measures on
Labelling and Ecodesign. Round robin test results have been widely taken into account in the
establishment of regulations, in defining tolerance levels for verification of declared v
...
IEC TR 62970 ®
Edition 1.0 2016-06
TECHNICAL
REPORT
Guidance on how to conduct round robin tests for household and similar
electrical appliances
All rights reserved. Unless otherwise specified, 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
either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC
copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
your local IEC member National Committee for further information.
IEC Central Office Tel.: +41 22 919 02 11
3, rue de Varembé Fax: +41 22 919 03 00
CH-1211 Geneva 20 info@iec.ch
Switzerland www.iec.ch
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.
About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigenda or an amendment might have been published.
IEC Catalogue - webstore.iec.ch/catalogue Electropedia - www.electropedia.org
The stand-alone application for consulting the entire The world's leading online dictionary of electronic and
bibliographical information on IEC International Standards, electrical terms containing 20 000 terms and definitions in
Technical Specifications, Technical Reports and other English and French, with equivalent terms in 15 additional
documents. Available for PC, Mac OS, Android Tablets and languages. Also known as the International Electrotechnical
iPad. Vocabulary (IEV) online.
IEC publications search - www.iec.ch/searchpub IEC Glossary - std.iec.ch/glossary
The advanced search enables to find IEC publications by a 65 000 electrotechnical terminology entries in English and
variety of criteria (reference number, text, technical French extracted from the Terms and Definitions clause of
committee,…). It also gives information on projects, replaced IEC publications issued since 2002. Some entries have been
and withdrawn publications. collected from earlier publications of IEC TC 37, 77, 86 and
CISPR.
IEC Just Published - webstore.iec.ch/justpublished
Stay up to date on all new IEC publications. Just Published IEC Customer Service Centre - webstore.iec.ch/csc
details all new publications released. Available online and If you wish to give us your feedback on this publication or
also once a month by email. need further assistance, please contact the Customer Service
Centre: csc@iec.ch.
IEC TR 62970 ®
Edition 1.0 2016-06
TECHNICAL
REPORT
Guidance on how to conduct round robin tests for household and similar
electrical appliances
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 97.030 ISBN 978-2-8322-3488-4
– 2 – IEC TR 62970:2016 © IEC 2016
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references. 6
3 Terms and definitions . 6
4 Process and responsibilities . 7
4.1 Process . 7
4.1.1 Product to be tested . 7
4.1.2 Parameters to be tested . 7
4.1.3 Measurement procedure . 8
4.1.4 RRT procedure . 8
4.2 Responsibilities . 9
4.2.1 Contracting body . 9
4.2.2 Coordinator . 9
4.2.3 Subcontractor . 9
4.2.4 Financing of RRT . 9
5 Testing laboratories . 9
5.1 Potential laboratories . 9
5.2 Announcement . 9
5.2.1 General . 9
5.2.2 Questionnaire . 9
5.2.3 Assessment of selection of laboratories . 10
5.3 Selection of laboratories . 10
5.4 Final list of laboratories . 10
6 Transportation of the product . 10
6.1 Logistics . 10
6.2 Packaging . 10
7 Test . 10
7.1 Execution of test . 10
7.2 Laboratory visit . 11
7.3 Transmission of result . 11
8 Analysis, report and termination . 11
8.1 Analysis . 11
8.2 Report . 11
8.2.1 Draft report . 11
8.2.2 Content of the internal report . 11
8.3 Termination and publication of final external report . 11
Bibliography . 13
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
GUIDANCE ON HOW TO CONDUCT ROUND ROBIN TESTS
FOR HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES
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.
The main task of IEC technical committees is to prepare International Standards. However, a
technical committee may propose the publication of a Technical Report when it has collected
data of a different kind from that which is normally published as an International Standard, for
example "state of the art".
IEC TR 62970, which is a Technical Report, has been prepared by IEC technical committee
59: Performance of household and similar electrical appliances.
This Technical Report is based on EN TR 50619:2014.
The text of this Technical Report is based on the following documents:
Enquiry draft Report on voting
59/627/DTR 59/652/RVC
Full information on the voting for the approval of this Technical Report can be found in the
report on voting indicated in the above table.
– 4 – IEC TR 62970:2016 © IEC 2016
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC website 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.
A bilingual version of this publication may be issued at a later date.
INTRODUCTION
It is the responsibility of each standardization committee testing household and similar
electrical appliances to establish the repeatability and reproducibility of the measurement
standards developed.
Results from inter-laboratory comparisons are important for
a) identification of interlaboratory differences;
b) establishment of the effectiveness and comparability of test or measurement methods;
c) validation of uncertainties;
d) evaluation of the performance of laboratories for specific tests or measurements and
monitoring laboratories' continuing performance;
e) identification of problems in laboratories and initiation of actions for improvement which,
for example, may be related to inadequate test or measurement procedures, effectiveness
of staff training and supervision, or calibration of equipment; and
f) education of participating laboratories based on the outcomes of such comparisons.
The need for ongoing confidence in laboratory performance is not only essential for
laboratories and their contractors but also for other interested parties, such as regulators,
laboratory accreditation bodies and other organizations that specify requirements for
laboratories. ISO/IEC 17011 requires accreditation bodies to take account of laboratories'
participation and performance in proficiency testing.
In this respect, round robin testing was widely made in the past by IEC TC 59 for the
development of measurement procedures for the purpose of EU regulatory measures on
Labelli
...
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