IEC_62052-11ed1.0en-d.pdf

Electricity metering equipment(AC)General requirements,tests and test conditions Part 11:Metering equipment Reference number IEC 62052-11:2003(E)INTERNATIONAL STANDARD IEC62052-11 First edition2003-02 This English-language version is derived from the original bilingual publication by leaving out all French-language pages.Missing page numbers correspond to the French-language pages.Publication numbering As from 1 January 1997 all IEC publications are issued with a designation in the 60000 series.For example,IEC 34-1 is now referred to as IEC 60034-1.Consolidated editions The IEC is now publishing consolidated versions of its publications.For example,edition numbers 1.0,1.1 and 1.2 refer,respectively,to the base publication,the base publication incorporating amendment 1 and the base publication incorporating amendments 1 and 2.Further information on IEC publications The technical content of IEC publications is kept under constant review by the IEC,thus ensuring that the content reflects current technology.Information relating to this publication,including its validity,is available in the IEC Catalogue of publications(see below)in addition to new editions,amendments and corrigenda.Information on the subjects under consideration and work in progress undertaken by the technical committee which has prepared this publication,as well as the list of publications issued,is also available from the following:IEC Web Site(www.iec.ch)Catalogue of IEC publications The on-line catalogue on the IEC web site(www.iec.ch/searchpub)enables you to search by a variety of criteria including text searches,technical committees and date of publication.On-line information is also available on recently issued publications,withdrawn and replaced publications,as well as corrigenda.IEC Just Published This summary of recently issued publications(www.iec.ch/online_news/justpub)is also available by email.Please contact the Customer Service Centre(see below)for further information.Customer Service Centre If you have any questions regarding this publication or need further assistance,please contact the Customer Service Centre:Email:custserviec.ch Tel:+41 22 919 02 11 Fax:+41 22 919 03 00 Electricity metering equipment(AC)General requirements,tests and test conditions Part 11:Metering equipment For price,see current catalogue IEC 2003 Copyright-all rights reserved 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 the publisher.International Electrotechnical Commission,3,rue de Varemb,PO Box 131,CH-1211 Geneva 20,SwitzerlandTelephone:+41 22 919 02 11 Telefax:+41 22 919 03 00 E-mail:inmailiec.ch Web:www.iec.ch INTERNATIONAL STANDARD IEC62052-11 First edition2003-02 X Commission Electrotechnique InternationaleInternational Electrotechnical Commission PRICE CODE 62052-11 IEC:2003 3 CONTENTSFOREWORD.4INTRODUCTION.91Scope.112Normative references.113Terms and definitions.153.1General definitions.153.2Definitions related to the functional elements.193.3Definitions of mechanical elements.233.4Definitions related to insulation.253.5Definitions of meter quantities.273.6Definitions of influence quantities.293.7Definition of tests.313.8Definitions related to electromechanical meters.314Standard electrical values.334.1Standard reference voltages.334.2Standard currents.354.3Standard reference frequencies.355Mechanical requirements and tests.355.1General mechanical requirements.355.2Case.355.3Window.375.4Terminals Terminal block(s)Protective earth terminal.395.5Terminal cover(s).395.6Clearance and creepage distances.415.7Insulating encased meter of protective class II.435.8Resistance to heat and fire.435.9Protection against penetration of dust and water.435.10 Display of measured values.455.11 Output device.455.12 Marking of meter.476Climatic conditions.516.1Temperature range.516.2Relative humidity.516.3Tests of the effect of the climatic environments.517Electrical requirements.557.1Influence of supply voltage.557.2Heating.577.3Insulation.577.4Immunity to earth fault.617.5Electromagnetic compatibility(EMC).638Type test.718.1Test conditions.7162052-11 IEC:2003 5 Annex A(normative)Relationship between ambient air temperature and relativehumidity.73Annex B(normative)Voltage wave-form for the tests of the effect of voltage dips andshort interruptions.75Annex C(normative)Test circuit diagram for the test of immunity to earth fault.77Annex D(normative)Optical test output.79Annex E(informative)Test set-up for EMC tests.81Annex F(informative)Test schedule Recommended test sequences.85Figure A.1 Relationship between ambient air temperature and relative humidity.73Figure B.1 Voltage interruptions of U=100%,1 s.75Figure B.2 Voltage interruptions of U=100%,one cycle at rated frequency.75Figure B.3 Voltage dips of U=50%.75Figure C.1 Circuit to simulate earth fault condition in phase 1.77Figure C.2 Voltages at the meter under test.77Figure D.