1、 IEC 61557-11 Edition 1.0 2009-01 INTERNATIONAL STANDARD NORME INTERNATIONALE Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. Equipment for testing, measuring or monitoring of protective measures Part 11: Effectiveness of residual current monitors (RCMs) typ
2、e A and type B in TT, TN and IT systems Scurit lectrique dans les rseaux de distribution basse tension de 1 000 V c.a. et 1 500 V c.c. Dispositifs de contrle, de mesure ou de surveillance de mesures de protection Partie 11: Efficacit des contrleurs disolement courant diffrentiel rsiduel (RCM) de typ
3、e A et de type B dans les rseaux TT, TN et IT IEC 61557-11:2009 THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2009 IEC, Geneva, Switzerland 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 mechan
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17、on ou si vous avez des questions, visitez le FAQ du Service clients ou contactez-nous: Email: csciec.ch Tl.: +41 22 919 02 11 Fax: +41 22 919 03 00 IEC 61557-11 Edition 1.0 2009-01 INTERNATIONAL STANDARD NORME INTERNATIONALE Electrical safety in low voltage distribution systems up to 1 000 V a.c. an
18、d 1 500 V d.c. Equipment for testing, measuring or monitoring of protective measures Part 11: Effectiveness of residual current monitors (RCMs) type A and type B in TT, TN and IT systems Scurit lectrique dans les rseaux de distribution basse tension de 1 000 V c.a. et 1 500 V c.c. Dispositifs de con
19、trle, de mesure ou de surveillance de mesures de protection Partie 11: Efficacit des contrleurs disolement courant diffrentiel rsiduel (RCM) de type A et de type B dans les rseaux TT, TN et IT INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE S ICS 17.220.20; 29.08
20、0.01; 29.240.01 PRICE CODE CODE PRIX ISBN 2-8318-1023-8 Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale 2 61557-11 IEC:2009 CONTENTS FOREWORD.3 1 Scope.5 2 Normative references5 3 Terms and definitions .5 4 Requireme
21、nts .7 4.1 Operating test7 4.2 Non-operating test .8 4.3 Test of actuating time 8 4.4 Operating conditions8 4.5 Prevention of danger by fault voltages exceeding 50 V a.c. or 120 V d.c. in the monitored system during measurement8 4.6 Prevention of danger caused by overvoltages when the system is conn
22、ected9 4.7 Electromagnetic compatibility (EMC)9 5 Marking and operating instructions9 5.1 Markings .9 5.2 Operating instructions9 5.2.1 Information 9 5.2.2 Warnings.9 6 Tests10 6.1 General .10 6.2 Operating uncertainty.10 Annex A (informative) Differences between RCMs and RCDs .14 Annex B (informati
23、ve) Safety aspects, test methods and applications18 Bibliography20 Figure 1 Maximum steepness of stepwise rising smooth direct test current (I T ) .12 Figure 2 Maximum increase of linearly increasing smooth direct test current (I T ).12 Figure 3 Example for linearly increasing smooth direct test cur
24、rent (I T ): I N = 30 mA 13 Figure A.1 Typical installation with a combination of RCDs and RCMs 17 Table 1 Calculation of operating uncertainty .11 Table A.1 Normative reference and definition of function of RCM and RCD.14 Table A.2 Requirements for testing RCMs according to product standard IEC 620
25、20:1998 15 Table A.3 Main technical differences between RCMs and RCDs .16 61557-11 IEC:2009 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ ELECTRICAL SAFETY IN LOW VOLTAGE DISTRIBUTION SYSTEMS UP TO 1 000 V a.c. AND 1 500 V d.c. EQUIPMENT FOR TESTING, MEASURING OR MONITORING OF PROTECTIVE MEASURES Pa
26、rt 11: Effectiveness of residual current monitors (RCMs) type A and type B in TT, TN and IT systems FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The objec
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35、se 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
36、 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 61557-11 has been prepared by IEC technical committee 85: Measuring equipment for electrical and electromagne
37、tic quantities. The text of this standard is based on the following documents: FDIS Report on voting 85/338/FDIS 85/343/RVD Full information on the voting for the approval of this standard can be found in the report on voting indicated in the above table. This publication has been drafted in accorda
38、nce with the ISO/IEC Directives, Part 2. 4 61557-11 IEC:2009 This part is to be used in conjunction with IEC 61557-1:2007, Part 1: General requirements. A list of all parts of the IEC 61557 series, published under the general title Electrical safety in low voltage distribution systems up to 1 000 V
39、a.c. and 1 500 V d.c. Equipment for testing, measuring or monitoring of protective measures, can be found on the IEC website. The committee has decided that the contents of this publication will remain unchanged until the maintenance result date indicated on the IEC web site under “http:/webstore.ie
40、c.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. 61557-11 IEC:2009 5 ELECTRICAL SAFETY IN LOW VOLTAGE DISTRIBUTION SYSTEMS UP TO 1 000 V a.c. AND 1 500 V d.c. EQUIPMENT FOR TESTING, MEASURI
41、NG OR MONITORING OF PROTECTIVE MEASURES Part 11: Effectiveness of residual current monitors (RCMs) type A and type B in TT, TN and IT systems 1 Scope This part of IEC 61557 specifies the requirements for testing equipment applied to the testing of the effectiveness of residual current monitors (RCMs
42、) of type A and type B, which are already installed in distribution systems. This test equipment can be used in any kind of network like a TN, TT or IT system. The test equipment may also be used for testing directionally discriminating RCMs in IT-Systems. 2 Normative references The following refere
43、nced 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/TR 60755:2008, General requirements for residual current operated
44、 protective devices IEC 61010-1:2001, Safety requirements for electrical equipment for measurement, control, and laboratory use Part 1: General requirements IEC 61326-2-2, Electrical equipment for measurement, control and laboratory use EMC requirements Part 2-2: Particular requirements Test configu
45、rations, operational conditions and performance criteria for portable test, measuring and monitoring equipment used in low- voltage distribution systems IEC 61557-1, Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. Equipment for testing, measuring or monitori
46、ng of protective measures Part 1: General requirements IEC 61557-6, Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. Equipment for testing, measuring or monitoring of protective measures Part 6: Effectiveness of residual current devices (RCD) in TT, TN and IT
47、 systems IEC 62020:1998, Electrical accessories Residual current monitors for household and similar uses (RCMs) 3 Terms and definitions For the purposes of this document, the terms and definitions given in IEC 61557-1, IEC 61557- 6 and the following apply. 6 61557-11 IEC:2009 3.1 residual current mo
48、nitor (RCM) device or association of devices which monitors the residual current in an electrical installation and which activates an alarm when the residual current exceeds the operating value of the device IEC 62020, definition 3.3.1 3.2 earth fault current I ecurrent flowing to earth due to an in
49、sulation fault IEC 62020, definition 3.1.1 3.3 test current I Ttest current superimposed by the test equipment for testing the effectiveness of the RCM 3.4 residual current I vector sum of the instantaneous values of the current flowing in the main circuit of the RCM (expressed as r.m.s. value) IEC 62020, definition 3.2.3 3.5 rated residual operating curre
