1、 IEC 62059-32-1 Edition 1.0 2011-12 INTERNATIONAL STANDARD NORME INTERNATIONALE Electricity metering equipment Dependability Part 32-1: Durability Testing of the stability of metrological characteristics by applying elevated temperature Appareils de comptage de llectricit Sret de fonctionnement Part
2、ie 32-1: Durabilit Contrle de stabilit des caractristiques mtrologiques en appliquant une temprature leve IEC 62059-32-1:2011 THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2011 IEC, Geneva, Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced
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17、 metering equipment Dependability Part 32-1: Durability Testing of the stability of metrological characteristics by applying elevated temperature Appareils de comptage de llectricit Sret de fonctionnement Partie 32-1: Durabilit Contrle de stabilit des caractristiques mtrologiques en appliquant une t
18、emprature leve INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE N ICS 17.220; 19.020; 91.140.50 PRICE CODE CODE PRIX ISBN 978-2-88912-827-3 Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Interna
19、tionale 2 62059-32-1 IEC:2011 CONTENTS FOREWORD . 3 INTRODUCTION . 5 1 Scope . 6 2 Normative references . 6 3 Terms and definitions . 6 4 General 7 5 Initial measurements 7 6 Conditioning . 7 7 Intermediate measurements verification of energy measurement and registration 9 7.1 General . 9 7.2 Method
20、 A: Test method using a reference meter 9 7.2.1 Test conditions 9 7.2.2 Test using a reference standard meter 10 7.2.3 Test using a reference meter of the same type as the MUT . 10 7.3 Method B: Test method using a stable load . 11 7.4 Final temperature ramp . 12 8 Recovery 12 9 Final measurements a
21、nd acceptance criteria 12 10 Information to be given in the test report 13 Bibliography 14 Table 1 Limits of change in percentage error at I max13 62059-32-1 IEC:2011 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ ELECTRICITY METERING EQUIPMENT DEPENDABILITY Part 32-1: Durability Testing of the stabi
22、lity of metrological characteristics by applying elevated temperature 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 interna
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32、 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 62059-32-1 has been prepared b
33、y IEC technical committee 13: Electrical energy measurement, tariff- and load control. The text of this standard is based on the following documents: FDIS RVD 13/1483/FDIS 13/1493/RVD Full information on the voting for the approval of this standard can be found in the report on voting indicated in t
34、he above table. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. 4 62059-32-1 IEC:2011 A list of all parts of IEC 62059 series, under the general title Electricity metering equipment Dependability, can be found on the IEC website. The committee has decided that th
35、e contents of this publication will remain unchanged until the stability 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. 62059-32
36、-1 IEC:2011 5 INTRODUCTION Electricity meters are products designed for high reliability and durability to operate continuously for extended periods without supervision. To manage metering assets effectively, it is important to have tools for predicting and estimating life characteristics of various
37、 types. IEC 62059-41 provides methods for predicting the failure rate assumed to be constant of metering equipment, based on the parts stress method. IEC 62059-31-1 provides a method for estimating life characteristics using accelerated reliability testing by operating the test specimens at elevated
38、 temperature and humidity. Future parts of IEC 62059-31 may be established to cover accelerated reliability testing, applying other stresses. This standard, IEC 62059-32-1 provides a test method to evaluate one important aspect of durability, the stability of metrology characteristics, by operating
39、a test specimen at the upper limit of the specified operating range of temperature, voltage and current for an extended period. Future parts of IEC 62059-32 may be established to cover other kinds of stress or other aspects of durability. 6 62059-32-1 IEC:2011 ELECTRICITY METERING EQUIPMENT DEPENDAB
40、ILITY Part 32-1: Durability Testing of the stability of metrological characteristics by applying elevated temperature 1 Scope The stability of metrological characteristics is one important aspect of durability. This part of IEC 62059 specifies a method for testing the stability of metrological chara
41、cteristics of electricity meters, by operating a test specimen at the upper limit of the specified operating range of temperature, voltage and current for an extended period. Functional performance other than the accuracy of energy measurement is out of the scope of this standard. Note, that from th
42、e results of this test, no conclusion can be drawn for the length of period during which the stability of the metrological characteristics will be maintained when the meter is operated under usual conditions. This International Standard is applicable to all types of electricity meters in the scope o
43、f IEC TC 13. 2 Normative references The following referenced documents are indispensable for the application 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 60068-2-2
44、:2007, Environmental testing Part 2-2: Tests Test B: Dry heat IEC 62052-11:2003, Electricity metering equipment (AC) General requirements, tests and test conditions Part 11: Metering equipment IEC 62053-21:2003, Electricity metering equipment (a.c.) Particular requirements Part 21: Static meters for
45、 active energy (classes 1 and 2) 3 Terms and definitions For the purposes of this document, the terms and definitions in IEC 62052-11 as well as the following apply. 3.1 durability the ability of an item to perform a required function under given conditions of use and maintenance, until a limiting s
46、tate is reached NOTE A limiting state of an item may be characterized by the end of the useful life, unsuitability or any economic or technological reasons or other relevant factors. 62059-32-1 IEC:2011 7 IEC 60050-191: 1990, 191-02-02 4 General The test procedure consists of: initial measurements,
47、see Clause 5; operational conditioning at the maximum temperature, voltage and current of the specified operating range, see Clause 6. During the conditioning, intermediate measurements are taken, see Clause 7; recovery see Clause 8 and final measurements, see Clause 9. The test shall be performed o
48、n (one of) the meter(s) submitted for type testing (meter under test, MUT). During the conditioning, the MUT shall not exhibit any irregular behaviour concerning energy measurement and registration. This shall be verified as specified in Clause 7. In addition, after conditioning and recovery, the ch
49、ange of the percentage error, when compared to the initial measurements, shall not exceed the limits specified in Clause 9. To verify this, the percentage error shall be measured, as specified in Clause 5, before conditioning and following the recovery period. If the MUT passes the test, this gives a reasonable level of confidence that the meter type test
