EN 61557-13:2011

SLOVENSKI STANDARD
01-november-2011
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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 electrical distribution systems (IEC 61557-13:2011)
Elektrische Sicherheit in Niederspannungsnetzen bis AC 1 000 V und DC 1 500 V -
Geräte zum Prüfen, Messen oder Überwachen von Schutzmaßnahmen –-Teil 13:
Handgehaltene und handbediente Strommesszangen und Stromsonden zur Messung
von Ableitströmen in elektrischen Anlagen (IEC 61557-13:2011)
Sécurité électrique dans les réseaux de distribution basse tension de 1 000 V c.a. et 1
500 V c. c. - Dispositifs de contrôle, de mesure ou de surveillance de mesures de
protection - Partie 13: Pinces et capteurs de courant portatifs et manipulés à la main
pour la mesure des courants de fuite dans les réseaux de distribution électriques (CEI
61557-13:2011)
Ta slovenski standard je istoveten z: EN 61557-13:2011
ICS:
17.220.20 0HUMHQMHHOHNWULþQLKLQ Measurement of electrical
PDJQHWQLKYHOLþLQ and magnetic quantities
29.080.01 (OHNWULþQDL]RODFLMDQD Electrical insulation in
VSORãQR general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 61557-13
NORME EUROPÉENNE
September 2011
EUROPÄISCHE NORM
ICS 17.220.20; 29.080.01; 29.240.01

English version
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 electrical distribution systems
(IEC 61557-13:2011)
Sécurité électrique dans les réseaux de Elektrische Sicherheit in
distribution basse tension de 1 000 V c.a. Niederspannungsnetzen bis AC 1 000 V
et 1 500 V c.c. - und DC 1 500 V -
Dispositifs de contrôle, de mesure ou de Geräte zum Prüfen, Messen oder
surveillance de mesures de protection - Überwachen von Schutzmaßnahmen -
Partie 13: Pinces et capteurs de courant Teil 13: Handgehaltene und handbediente
portatifs et manipulés à la main pour la Strommesszangen und Stromsonden zur
mesure des courants de fuite dans les Messung von Ableitströmen in
réseaux de distribution électriques elektrischen Anlagen
(CEI 61557-13:2011) (IEC 61557-13:2011)

This European Standard was approved by CENELEC on 2011-08-12. CENELEC members are bound to comply
with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard
the status of a national standard without any alteration.

Up-to-date lists and bibliographical references concerning such national standards may be obtained on
application to the Central Secretariat or to any CENELEC member.

This European Standard exists in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CENELEC member into its own language and notified
to the Central Secretariat has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus,
the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy,
Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia,
Spain, Sweden, Switzerland and the United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Management Centre: Avenue Marnix 17, B - 1000 Brussels

© 2011 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 61557-13:2011 E
Foreword
The text of document 85/387/FDIS, future edition 1 of IEC 61557-13, prepared by IEC TC 85, "Measuring
equipment for electrical and electromagnetic quantities" was submitted to the IEC-CENELEC parallel vote
and approved by CENELEC as EN 61557-13:2011.

The following dates are fixed:
(dop) 2012-05-12
• latest date by which the document has
to be implemented at national level by
publication of an identical national
standard or by endorsement
(dow) 2014-08-12
• latest date by which the national
standards conflicting with the
document have to be withdrawn
This standard is to be used in conjunction with EN 61557-1:2007.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such patent
rights.
Endorsement notice
The text of the International Standard IEC 61557-13:2011 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following note has to be added for the standard indicated:
IEC 60359 NOTE  Harmonized as EN 60359.

- 3 - EN 61557-13:2011
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

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.

NOTE  When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD
applies.
Publication Year Title EN/HD Year

IEC 61000-4-8 2009 Electromagnetic compatibility (EMC) - EN 61000-4-8 2010
Part 4-8: Testing and measurement
techniques - Power frequency magnetic field
immunity test
IEC 61010-1 - Safety requirements for electrical equipment EN 61010-1 -
for measurement, control and laboratory use -
Part 1: General requirements
IEC 61010-2-030 - Safety requirements for electrical equipment EN 61010-2-030 -
for measurement, control and laboratory use -
Part 2-030: Particular requirements for testing
and measuring circuits
IEC 61010-2-032 2002 Safety requirements for electrical equipment EN 61010-2-032 2002
for measurement, control, and laboratory use -
Part 2-032: Particular requirements for hand-
held and hand-manipulated current sensors
for electrical test and measurement

IEC 61326-1 - Electrical equipment for measurement, EN 61326-1 -
control and laboratory use -
EMC requirements -
Part 1: General requirements
IEC 61326-2-2 - Electrical equipment for measurement, EN 61326-2-2 -
control and laboratory use - EMC
requirements -
Part 2-2: Particular requirements - Test
configurations, operational conditions and
performance criteria for portable test,
measuring and monitoring equipment used in
low-voltage distribution systems

IEC 61557-1 2007 Electrical safety in low voltage distribution EN 61557-1 2007
systems up to 1 000 V a.c. and 1 500 V d.c. -
Equipment for testing, measuring or
monitoring of protective measures -
Part 1: General requirements
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 sensors for
measurement of leakage currents in electrical distribution systems

Sécurité électrique dans les réseaux de distribution basse tension de
1 000 V c.a. et 1 500 V c.c. – Dispositifs de contrôle, de mesure ou de
surveillance de mesures de protection –
Partie 13: Pinces et capteurs de courant portatifs et manipulés à la main pour
la mesure des courants de fuite dans les réseaux de distribution électriques

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX R
ICS 17.220.20; 29.080.01; 29.240.01 ISBN 978-2-88912-571-5

– 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 range / 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 Minimum 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 Electrical 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 . 19

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 . 12
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 conductor 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 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 –

Part 13:Hand-held and hand-manipulated current clamps and sensors
for measurement of leakage currents in electrical 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 concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use 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 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 equipment 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.

61557-13  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 1 000 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.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.
– 6 – 61557-13  IEC:2011
INTRODUCTION
During periodical inspections of electrical installations, it is increasingly difficult to carry out
measurements 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 of 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 curre
...