1、 IEC TR 62970 Edition 1.0 2016-06 TECHNICAL REPORT Guidance on how to conduct round robin tests for household and similar electrical appliances IEC TR 62970:2016-06(en) THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2016 IEC, Geneva, Switzerland All rights reserved. Unless otherwise specified, no
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10、 give us your feedback on this publication or need further assistance, please contact the Customer Service Centre: csciec.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
11、COMMISSION ICS 97.030 ISBN 978-2-8322-3488-4 Registered trademark of the International Electrotechnical Commission Warning! Make sure that you obtained this publication from an authorized distributor. 2 IEC TR 62970:2016 IEC 2016 CONTENTS FOREWORD . 3 INTRODUCTION . 5 1 Scope 6 2 Normative reference
12、s. 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 Fin
13、ancing 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 Logistic
14、s . 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 extern
15、al report 11 Bibliography . 13 IEC TR 62970:2016 IEC 2016 3 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 standar
16、dization 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 Inter
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25、rawn 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 n
26、ot 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 no
27、rmally 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
28、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 bee
29、n 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 pu
30、blication will be reconfirmed, withdrawn, replaced by a revised edition, or amended. A bilingual version of this publication may be issued at a later date. IEC TR 62970:2016 IEC 2016 5 INTRODUCTION It is the responsibility of each standardization committee testing household and similar electrical ap
31、pliances 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)
32、 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 inadequa
33、te 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
34、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 proficienc
35、y 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 regulation
36、s, in defining tolerance levels for verification of declared values and/or limits. This document is intended to provide a consistent basis for performing round robin testing. It gives guidance to all interested parties to determine the competence among each other. It provides common ground for relia
37、ble statistical data (repeatability and reproducibility levels, etc.) as needed for regulation purposes (like for Labelling and Ecodesign). 6 IEC TR 62970:2016 IEC 2016 GUIDANCE ON HOW TO CONDUCT ROUND ROBIN TESTS FOR HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES 1 Scope This document provides guidanc
38、e 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,
39、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. NOTE T
40、he repeatability and reproducibility levels are important factors for the establishment of uncertainty margins of the measurement methods and for the definition of tolerance levels in verification schemes. 2 Normative references The following documents are referred to in the text in such a way that
41、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. ISO/IEC 17043:2010, Conformity assessment General requirements for p
42、roficiency testing IEC TR 61923, Household electrical appliances Method of measuring performance Assessment of repeatability and reproducibility 3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO/IEC 17043:2010 and the following apply. ISO and IEC maint
43、ain 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 3.1 contracting body organization or individual for which a round robin testing is provided
44、through a contractual arrangement SOURCE: ISO/IEC 17043:2010, 3.3, modified The term “customer“ has been replaced by “contracting body“. In the definition, “proficiency testing scheme“ has been replaced by “round robin testing“. IEC TR 62970:2016 IEC 2016 7 3.2 repeatability precision under repeatab
45、ility conditions Note 1 to entry: Repeatability can be expressed quantitatively in terms of the dispersion characteristics of the results. SOURCE: ISO 3534-2:2006, 3.3.5, modified Cross-references have been deleted. 3.3 reproducibility precision under reproducibility conditions Note 1 to entry: Repr
46、oducibility can be expressed quantitatively in terms of the dispersion characteristics of the results. Note 2 to entry: Results are usually understood to be corrected results. SOURCE: ISO 3534-2:2006, 3.3.10, modified Cross-references have been deleted. 3.4 round robin testing RRT ring testing proce
47、ss in which one or more items is tested according to a specific protocol by a number of different laboratories Note 1 to entry: It is the intention to derive levels of repeatability and reproducibility and hence to make classifications of laboratories. Note 2 to entry: The term “proficiency testing”
48、, defined in ISO/IEC 17043:2010, 3.7, is more general, as it covers aspects other than derivation of repeatability and reproducibility. Note 3 to entry: Round robin testing may be used for the evaluation of laboratory performance against pre- established criteria. 4 Process and responsibilities 4.1
49、Process 4.1.1 Product to be tested The product category to be tested should be clearly specified and one or more representative products should be selected. If only one product is selected, it should be representative in the sense that it reflects the typical behaviour and performance of the defined product category. It is recommended that two or more products be tested in order to get an indication of the measurement uncertainty across the range of performance that is likely to be encountered in th
