EN IEC 61557-13:2024

SLOVENSKI STANDARD
01-marec-2025
Električna varnost v nizkonapetostnih razdelilnih sistemih izmenične napetosti do
1 kV in enosmerne napetosti do 1,5 kV - Oprema za preskušanje, merjenje ali
nadzorovanje zaščitnih ukrepov - 13. del: Ročne in ročno upravljane tokovne
klešče in senzorji za merjenje uhajavih tokov v električnih razdelilnih sistemih (IEC
61557-13:2023)
Electrical safety in low voltage distribution systems up to 1 000 V AC and 1 500 V DC -
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 61557-13:2023)
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 61557-13:2023)
Sécurité électrique dans les réseaux de distribution basse tension au plus égale à 1 000
V en courant alternatif et 1 500 V en courant continu - 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 (IEC 61557-13:2023)
Ta slovenski standard je istoveten z: EN IEC 61557-13:2024
ICS:
17.220.20 Merjenje električnih in Measurement of electrical
magnetnih veličin and magnetic quantities
29.080.01 Električna izolacija na Electrical insulation in
splošno general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN IEC 61557-13

NORME EUROPÉENNE
EUROPÄISCHE NORM December 2024
ICS 17.220.20; 29.080.01; 29.240.01 Supersedes EN 61557-13:2011
English Version
Electrical safety in low voltage distribution systems up to 1 000 V
AC and 1 500 V DC - 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 61557-13:2023)
Sécurité électrique dans les réseaux de distribution basse Elektrische Sicherheit in Niederspannungsnetzen bis AC 1
tension au plus égale à 1 000 V en courant alternatif et 1 000 V und DC 1 500 V - Geräte zum Prüfen, Messen oder
500 V en courant continu - Dispositifs de contrôle, de Überwachen von Schutzmaßnahmen - Teil 13:
mesure ou de surveillance de mesures de protection - Handgehaltene und handbediente Strommesszangen und
Partie 13: Pinces et capteurs de courant portatifs et Stromsonden zur Messung von Ableitströmen in
manipulés à la main pour la mesure des courants de fuite elektrischen Anlagen
dans les réseaux de distribution électriques (IEC 61557-13:2023)
(IEC 61557-13:2023)
This European Standard was approved by CENELEC on 2024-10-16. 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 CEN-CENELEC
Management Centre 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 CEN-CENELEC Management Centre 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, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Türkiye and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2024 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 61557-13:2024 E

European foreword
The text of document 85/877/FDIS, future edition 2 of IEC 61557-13, prepared by TC 85 "Measuring
equipment for electrical and electromagnetic quantities" was submitted to the IEC-CENELEC parallel
vote and approved by CENELEC as EN IEC 61557-13:2024.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2025-12-31
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2027-12-31
document have to be withdrawn
This document supersedes EN 61557-13:2011 and all of its amendments and corrigenda (if any).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
This document is read in conjunction with EN IEC 61557-1:2021.
Any feedback and questions on this document should be directed to the users’ national committee. A
complete listing of these bodies can be found on the CENELEC website.
Endorsement notice
The text of the International Standard IEC 61557-13:2023 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standard indicated:
IEC 60359 NOTE Approved as EN 60359
IEC 61326-2-2 NOTE Approved as EN IEC 61326-2-2
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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 1  Where an International Publication has been modified by common modifications, indicated by (mod),
the relevant EN/HD applies.
NOTE 2  Up-to-date information on the latest versions of the European Standards listed in this annex is available
here: www.cencenelec.eu.
Publication Year Title EN/HD Year
IEC 61000-4-8 - Electromagnetic compatibility (EMC) - Part EN 61000-4-8 -
4-8: Testing and measurement techniques
- Power frequency magnetic field immunity
test
IEC 61010-1 - Safety requirements for electrical EN 61010-1 -
equipment for measurement, control, and
laboratory use - Part 1: General
requirements
IEC 61010-2-032 2019 Safety requirements for electrical EN IEC 61010-2- 2021
equipment for measurement, control and 032
laboratory use - Part 2-032: Particular
requirements for hand-held and hand-
manipulated current sensors for electrical
test and measurement
IEC 61326-1 2020 Electrical equipment for measurement, EN IEC 61326-1 2021
control and laboratory use - EMC
requirements - Part 1: General
requirements
IEC 61557-1 2019 Electrical safety in low voltage distribution EN IEC 61557-1 2021
systems up to 1 000 V AC and 1 500 V DC
- Equipment for testing, measuring or
monitoring of protective measures - Part 1:
General requirements
IEC 61557-13 ®
Edition 2.0 2023-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Electrical safety in low voltage distribution systems up to 1 000 V AC and

1 500 V DC – 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 au plus égale

à 1 000 V en courant alternatif et 1 500 V en courant continu – 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
INTERNATIONALE
ICS 17.220.20, 29.080.01, 29.240.01 ISBN 978-2-8322-7250-3

– 2 – IEC 61557-13:2023 © IEC 2023
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 7
4 Requirements . 9
4.1 General requirements . 9
4.2 Operating classes . 9
4.2.1 General . 9
4.2.2 Operating class 1. 10
4.2.3 Operating class 2. 10
4.2.4 Operating class 3. 10
4.3 Operating uncertainty of the specified measuring range . 10
4.3.1 General . 10
4.3.2 Specified measuring range of an operating class 1 current sensor . 10
4.3.3 Specified measuring range of an operating class 2 current sensor . 11
4.3.4 Specified measuring range of an operating class 3 current sensor . 11
4.4 Reference conditions . 13
4.5 Mechanical requirements . 14
4.6 Pollution degree . 15
4.7 Measurement category . 15
4.8 Electromagnetic compatibility (EMC) . 15
5 Marking and operating instructions . 15
5.1 Marking . 15
5.2 Operating instructions . 15
6 Tests . 16
6.1 General . 16
6.2 Operating uncertainty . 16
6.3 Verification of the operating instructions . 18
6.4 Verification of the marking . 18
Annex A (informative) Examples of measurement applications . 19
Bibliography . 21

Figure 1 – Operating uncertainty in relation to operating class and external magnetic
field for measuring ranges less than or equal to 10 mA . 12
Figure 2 – Operating uncertainty in relation to operating classes and external magnetic
field and measuring ranges greater than 10 mA . 13
Figure 3 – Reference position for two straight conductors (differential method) . 14
Figure 4 – Example of operating positions for differential method . 14
Figure 5 – Example for an applicable pictogram for operating class 1 using caution
symbol ISO 7000-0434A:2004-01 . 15
Figure A.1 – Example for measurement of protective conductor current – Direct method . 19
Figure A.2 – Example for measurement of leakage current including protective
conductor current – Differential method . 20

IEC 61557-13:2023 © IEC 2023 – 3 –
Table 1 – Relation between external magnetic field and operating class . 11
Table 2 – Reference conditions . 13
Table 3 – Calculation of the operating uncertainty . 17

– 4 – IEC 61557-13:2023 © IEC 2023
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ELECTRICAL SAFETY IN LOW VOLTAGE DISTRIBUTION SYSTEMS UP TO
1 000 V AC AND 1 500 V DC – 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) IEC draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). IEC takes no position concerning the evidence, validity or applicability of any claimed patent rights in
respect thereof. As of the date of publication of this document, IEC had not received notice of (a) patent(s),
which may be required to implement this document. However, implementers are cautioned that this may not
represent the latest information, which may be obtained from the patent database available at
https://patents.iec.ch. IEC shall not be held responsible for identifying any or all such patent rights.
IEC 61557-13 has been prepared by IEC technical committee 85: Measuring equipment for
electrical and electromagnetic quantities. It is an International Standard.
This second edition cancels and replaces the first edition published in 2011. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) the term "fixing device" has been removed;

IEC 61557-13:2023 © IEC 2023 – 5 –
b) the measuring range was changed to a display range, the indication of DC or peak values
has been added in 4.1;
c) the frequency for the test of sensitivity for low-frequency magnetic fields has been defined
in 4.2;
d) the specified measuring range is now defined as the range of indicated values based on
the operating uncertainty in 4.3;
e) alignment of the structure with that of the whole IEC 61557 series;
f) the variation E (maximum load current), may be specified according to the
manufacturer’s specification.
The text of this International Standard is based on the following documents:
Draft Report on voting
85/877/FDIS 85/883/RVD
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this International Standard is English.
This International Standard is to be used in conjunction with IEC 61557-1:2019.
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement,
available at www.iec.ch/members_experts/refdocs. The main document types developed by
IEC are described in greater detail at www.iec.ch/publications.
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 AC and 1 500 V DC – 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 document will remain unchanged until the
stability date indicated on the IEC website under webstore.iec.ch in the data related to the
specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
– 6 – IEC 61557-13:2023 © IEC 2023
INTRODUCTION
During periodical inspections of electrical installations, it is increasingly difficult to carry out
measurements of insulation resistances with devices in accordance with 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 o
...