1、 IEC 61557-13 Edition 1.0 2011-07 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 13: Hand-held and hand-manipulated current clamps and sen
2、sors for measurement of leakage currents in electrical distribution 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 13: Pinces et capteurs de courant portatifs
3、et manipuls la main pour la mesure des courants de fuite dans les rseaux de distribution lectriques IEC 61557-13:2011 THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2011 IEC, Geneva, Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or util
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17、sirez nous donner des commentaires sur cette publication 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 61557-13 Edition 1.0 2011-07 INTERNATIONAL STANDARD NORME INTERNATIONALE Electrical safety in
18、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 13: Hand-held and hand-manipulated current clamps and sensors for measurement of leakage currents in electrical distribution systems Scurit lectrique dans l
19、es 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 13: Pinces et capteurs de courant portatifs et manipuls la main pour la mesure des courants de fuite dans les rseaux de distribution lectriques
20、 INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE R ICS 17.220.20; 29.080.01; 29.240.01 PRICE CODE CODE PRIX ISBN 978-2-88912-571-5 Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale
21、2 61557-13 IEC:2011 CONTENTS FOREWORD . 4 INTRODUCTION . 6 1 Scope . 7 2 Normative references . 7 3 Terms and definitions . 7 4 Requirements . 9 4.1 General . 9 4.2 Operating classes . 9 4.2.1 General . 9 4.2.2 Operating class 1 9 4.2.3 Operating class 2 9 4.2.4 Operating class 3 9 4.3 Measuring ran
22、ge / percentage operating uncertainty of reading . 9 4.3.1 General . 9 4.3.2 Measuring range of an operating class 1 current sensor 10 4.3.3 Measuring range of an operating class 2 current sensor 10 4.3.4 Measuring range of an operating class 3 current sensor 10 4.4 Reference conditions . 12 4.5 Min
23、imum rated operating conditions 13 4.6 Mechanical requirements . 15 4.7 Pollution degree 15 4.8 Measurement category 15 4.9 Electromagnetic compatibility (EMC) . 15 5 Marking and operating instructions . 15 5.1 Marking . 15 5.2 Operating instructions . 16 6 Tests 16 6.1 Type tests . 16 6.1.1 Electri
24、cal safety . 16 6.1.2 Variations 16 6.1.3 Percentage operating uncertainty 17 6.1.4 Marking and operating instructions 17 6.2 Routine tests . 17 6.2.1 Intrinsic uncertainty . 17 6.2.2 Marking and operating instructions 17 Annex A (informative) Examples of measurement applications . 18 Bibliography 1
25、9 Figure 1 Percentage operating uncertainty in relation to operating class and external magnetic field for measuring ranges less than or equal to 10 mA 11 Figure 2 Percentage operating uncertainty in relation to operating classes and external magnetic field and measuring ranges greater than10 mA . 1
26、2 Figure 3 Reference position for two straight conductors (for differential method) 13 Figure 4 Example of operating positions for differential method . 15 Figure 5 Example for an applicable pictogram for operating class 1 . 16 61557-13 IEC:2011 3 Figure A.1 Example for measurement of protective con
27、ductor current Direct method 18 Figure A.2 Example for measurement of leakage current including protective conductor current Differential method 18 Table 1 Relation of external field and operating class 10 Table 2 Calculation of percentage operating uncertainty 14 4 61557-13 IEC:2011 INTERNATIONAL E
28、LECTROTECHNICAL 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 Part 13:Hand-held and hand-manipulated current clamps and sensors for measurement of leakage currents in electr
29、ical distribution systems 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 international co-operation on all questions concern
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39、on 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 61557-13 has been prepared by IEC technical committee TC85: Measuring equi
40、pment for electrical and electromagnetic quantities. The text of this standard is based on the following documents: FDIS Report on voting 85/387/FDIS 85/391/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. 61557-1
41、3 IEC:2011 5 This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. This part is to be used in conjunction with IEC 61557-1:2007. 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
42、 000 V 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 stability date indicated on the IEC web site under “http:/webstore.iec.c
43、h“ in the data related to the specific publication. At this date, the publication will be reconfirmed, withdrawn, replaced by a revised edition, or amended. 6 61557-13 IEC:2011 INTRODUCTION During periodical inspections of electrical installations, it is increasingly difficult to carry out measureme
44、nts of insulation resistances with devices according to IEC 61557-2 when the installations cannot be switched off for long periods and when there are sensitive appliances connected. Therefore, the measurement of leakage currents can provide additional information about the safe or unsafe situation o
45、f an installation. Furthermore, the user has the opportunity to place current clamps and sensors on different points of the distribution system for troubleshooting nuisance tripping of RCDs, alarms of RCMs and other problems caused by low frequency leakage currents. Unfortunately, the presence of hi
46、gh external magnetic fields has a big impact on the performance of commonly used current clamps and sensors. High uncertainty and non- repeatability of readings can lead to unsafe interpretations. This standard defines performance classes for current clamps and sensors in relationship to ranges of h
47、igh external magnetic fields and gives guidance to the user to choose the appropriate measuring device for a given situation. 61557-13 IEC:2011 7 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 MEA
48、SURES Part 13:Hand-held and hand-manipulated current clamps and sensors for measurement of leakage currents in electrical distribution systems 1 Scope This part of IEC 61557 defines special performance requirements for hand-held and hand- manipulated current clamps and sensors for measurement of lea
49、kage currents in electrical distribution systems up to 1 000 V a.c. and 1 500 V d.c., taking into account the influence of high external low-frequency magnetic fields and other influencing quantities. This standard does not apply to current clamps or sensors which are used in combination with devices for insulation fault location according to IEC 61557-9, unless it is specified by
