1、 INTERNATIONAL STANDARD IEC62052-21 First edition2004-05 Electricity metering equipment(a.c.)General requirements,tests and test conditions Part 21:Tariff and load control equipment Reference number IEC 62052-21:2004(E)LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY
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8、+41 22 919 02 11 Fax:+41 22 919 03 00 LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.INTERNATIONAL STANDARD IEC62052-21 First edition2004-05 Electricity metering equipment(a.c.)General requirements,tests and test conditions Part 21:Ta
9、riff and load control equipment IEC 2004 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 C
10、ommission,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 X For price,see current cataloguePRICE CODE Commission Electrotechnique InternationaleInternational Electrotechnical Commission LICENSED TO MECON L
11、imited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.2 62052-21 IEC:2004(E)CONTENTS FOREWORD.4 INTRODUCTION.6 1 Scope.7 2 Normative references.7 3 Terms and definitions.8 3.1 General definitions.9 3.2 Definitions related to electronic ripple control receivers
12、.9 3.3 Definitions related to the ripple control code and to the control element.10 3.4 Definitions related to time switches.11 3.5 Definitions related to the output elements.12 3.6 Definitions of mechanical elements.13 3.7 Definitions of insulations.14 3.8 Definitions of influence quantities.15 3.9
13、 Definition of tests.16 4 Standard electrical values.16 4.1 Standard reference voltage(Un).16 4.2 Standard reference frequency(fn).16 5 Mechanical requirements and tests.16 5.1 General mechanical requirements.16 5.2 Case.17 5.3 Window.18 5.4 Terminals,terminal block(s),protective earth terminal.18 5
14、.5 Terminal cover(s).19 5.6 Clearance and creepage distances.19 5.7 Insulating encased tariff and load control equipment of protective class II.20 5.8 Resistance to heat and fire.20 5.9 Protection against penetration of dust and water.21 5.10 Void.21 5.11 Void.21 5.12 Marking of tariff and load cont
15、rol equipment.22 6 Climatic conditions,requirements and tests.22 6.1 Temperature range.22 6.2 Relative humidity.23 6.3 Tests of the effect of the climatic environments.23 7 Electrical requirements and tests.24 7.1 Supply voltage.24 7.2 Heating.26 7.3 Insulation.26 7.4 Output elements.28 7.5 Function
16、al requirements and tests.32 7.6 Electromagnetic compatibility(EMC).32 7.7 Radio interference suppression.35 LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.62052-21 IEC:2004(E)3 8 Test conditions and type test.35 8.1 Test conditions.35 8.2 Type test.35 Annex A(normative)Relationship between ambient air temperature and relative humidity.36 Annex B(normative)Reference and limiting values of the influence quantities.37 Annex C(normat
