EN IEC 61557-11:2022

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 11: Effectiveness of residual current monitors (RCM) in TT, TN and IT systems

IEC 61557-11:2009 specifies the requirements for testing equipment applied to the testing of the effectiveness of residual current monitors (RCMs) 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.This part is to be used in conjunction with IEC 61557-1:2007, Part 1: General requirements.

Elektrische Sicherheit in Niederspannungsnetzen bis AC 1 000 V und DC 1 500 V - Geräte zum Prüfen, Messen oder Überwachen von Schutzmaßnahmen - Teil 11: Wirksamkeit von Differenzstrom-Überwachungsgeräten (RCM) in TT-, TN- und IT-Systemen

Sécurité électrique dans les réseaux de distribution basse tension au plus égale à 1000 V c.a. et 1500 V c.c. - Dispositifs de contrôle, de mesure ou de surveillance de mesures de protection - Partie 11: Efficacité des contrôleurs d'isolement à courant différentiel résiduel (RCM) dans les réseaux TT, TN et IT

La CEI 61557-11:2009 spécifie les exigences relatives au matériel d'essai appliqué à l'essai de l'efficacité des contrôleurs d'isolement à courant différentiel résiduel (RCM) de type A et type B, déjà installés dans les réseaux de distribution. Ce matériel d'essai peut être utilisé dans n'importe quel type de réseau tel qu'un réseau TN, TT ou IT. Le matériel d'essai peut également être utilisé pour l'essai des RCM directionnellement sélectifs dans des réseaux IT. La présente partie doit être utilisée conjointement avec la CEI 61557-1:2007, Partie 1: Prescriptions générales.

Električna varnost v nizkonapetostnih razdelilnih sistemih za izmenične napetosti do 1 000 V in enosmerne napetosti do 1 500 V - Oprema za preskušanje, merjenje ali nadzorovanje zaščitnih ukrepov - 11. del: Učinkovitost naprav za nadzorovanje preostalega toka (RCM) v sistemih TT, TN in IT (IEC 61557-11:2020)

Standard IEC 61557-11:2009 določa zahteve za preskuševalno opremo, ki se uporablja za preskušanje učinkovitosti naprav za nadzorovanje preostalega toka (RCM) tipov A in B, nameščenih v razdelilnih sistemih. To preskuševalno opremo je mogoče uporabiti v katerem koli omrežju (npr. v sistemu TN, TT ali IT). Preskuševalna oprema se lahko uporablja tudi za preskušanje usmerjeno razlikovalnih naprav za nadzorovanje preostalega toka v sistemih IT. Ta del je treba uporabljati v povezavi s standardom IEC 61557-1:2007, 1. del: Splošne zahteve.

General Information

• Status: Published
• Publication Date: 19-May-2022
• ICS: 17.200.20 - Temperature-measuring instruments
• ICS: 29.080.01 - Electrical insulation in general
• ICS: 29.240.01 - Power transmission and distribution networks in general
• Technical Committee: CLC/TC 85X - Measuring equipment for electrical and electromagnetic quantities
• Drafting Committee: IEC/TC 85 - IEC_TC_85
• Current Stage: 6060 - Document made available - Publishing
• Start Date: 20-May-2022
• Completion Date: 20-May-2022
• Directive: 2006/95/EC - Directive 2006/95/EC of the European Parliament and of the Council of 12 December 2006 on the harmonisation of the laws of Member States relating to electrical equipment designed for use within certain voltage limits (codified version)
• Directive: 2014/30/EU - Directive 2014/30/EU of the European Parliament and of the Council of 26 February 2014 on the harmonisation of the laws of the Member States relating to electromagnetic compatibility (recast)
• Directive: 2014/35/EU - Directive 2014/35/EU of the European Parliament and of the Council of 26 February 2014 on the harmonisation of the laws of the Member States relating to the making available on the market of electrical equipment designed for use within certain voltage limits
• Directive: 2014/53/EU - Directive 2014/53/EU of The European Parliament and of the Council of 16 April 2014 on the harmonisation of the laws of the Member States relating to the making available on the market of radio equipment and repealing Directive 1999/5/EC
• Mandate: M/511 - Mandate to CEN, CENELEC and ETSI relating to harmonised standards in the field of the Low Voltage Directive
• Mandate: M/552 - [C(2016) 7641 final] Standardisation request as regards harmonised standards in support of Directive 2014/30/EU of the European Parliament and of the Council of 26 February 2014 on the harmonisation of the laws of the Member States relating to electromagnetic compatibility
• Ref Project: SIST EN IEC 61557-11:2022 - 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 11: Effectiveness of residual current monitors (RCM) in TT, TN and IT systems (IEC 61557-11:2020)

Relations

• Replaces: EN 61557-11:2009 - 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) type A and type B in TT, TN and IT systems
• Effective Date: 23-Jan-2018

Standards Content (Sample)

SLOVENSKI STANDARD
01-oktober-2022
Nadomešča:
SIST EN 61557-11:2009
Električna varnost v nizkonapetostnih razdelilnih sistemih za izmenične napetosti
do 1 000 V in enosmerne napetosti do 1 500 V - Oprema za preskušanje, merjenje
ali nadzorovanje zaščitnih ukrepov - 11. del: Učinkovitost naprav za nadzorovanje
preostalega toka (RCM) v sistemih TT, TN in IT (IEC 61557-11:2020)
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 11:
Effectiveness of residual current monitors (RCM) in TT, TN and IT systems (IEC 61557-
11:2020)
Elektrische Sicherheit in Niederspannungsnetzen bis AC 1 000 V und DC 1 500 V -
Geräte zum Prüfen, Messen oder Überwachen von Schutzmaßnahmen - Teil 11:
Wirksamkeit von Differenzstrom-Überwachungsgeräten (RCM) in TT-, TN- und IT-
Systemen (IEC 61557-11:2020)
Sécurité électrique dans les réseaux de distribution basse tension au plus égale à 1000
V c.a. et 1500 V c.c. - Dispositifs de contrôle, de mesure ou de surveillance de mesures
de protection - Partie 11: Efficacité des contrôleurs d'isolement à courant différentiel
résiduel (RCM) dans les réseaux TT, TN et IT (IEC 61557-11:2020)
Ta slovenski standard je istoveten z: EN IEC 61557-11:2022
ICS:
17.200.20 Instrumenti za merjenje Temperature-measuring
temperature instruments
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 61557-11

NORME EUROPÉENNE
EUROPÄISCHE NORM May 2022
ICS 17.200.20; 29.080.01; 29.240.01 Supersedes EN 61557-11:2009
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 11: Effectiveness of
residual current monitors (RCM) in TT, TN and IT systems
(IEC 61557-11:2020)
Sécurité électrique dans les réseaux de distribution basse Elektrische Sicherheit in Niederspannungsnetzen bis AC
tension au plus égale à 1000 V c.a. et 1500 V c.c. - 1 000 V und DC 1 500 V - Geräte zum Prüfen, Messen oder
Dispositifs de contrôle, de mesure ou de surveillance de Überwachen von Schutzmaßnahmen - Teil 11:
mesures de protection - Partie 11: Efficacité des contrôleurs Wirksamkeit von Differenzstrom-Überwachungsgeräten
d'isolement à courant différentiel résiduel (RCM) dans les (RCM) in TT-, TN- und IT-Systemen
réseaux TT, TN et IT (IEC 61557-11:2020)
(IEC 61557-11:2020)
This European Standard was approved by CENELEC on 2022-04-06. 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,
Turkey 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
© 2022 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 61557-11:2022 E

European foreword
The text of document 85/720/FDIS, future edition 2 of IEC 61557-11, 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 IEC 61557-11:2022.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2023-01-06
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2025-04-06
document have to be withdrawn
This document supersedes EN 61557-11:2009 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 has been prepared under a Standardization Request given to CENELEC by the
European Commission and the European Free Trade Association.
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 61557-11:2020 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 standards
indicated:
IEC 60364-4-41 NOTE Harmonized as HD 60364-4-41
IEC 60364-6 NOTE Harmonized as HD 60364-6
IEC 60947-2 NOTE Harmonized as EN 60947-2
IEC 61008-1 NOTE Harmonized as EN 61008-1
IEC 61326-2-2 NOTE Harmonized as EN IEC 61326-2-2
IEC 62020-1:2020 NOTE Harmonized as EN IEC 62020-1:2021 (not modified)
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.cenelec.eu.
Publication Year Title EN/HD Year
IEC 61010-1 2010 Safety requirements for electrical EN 61010-1 2010
equipment for measurement, control, and
laboratory use - 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 61557-6 - Electrical safety in low voltage distribution EN IEC 61557-6 -
systems up to 1 000 V AC and 1 500 V
DC - Equipment for testing, measuring or
monitoring of protective measures - Part
6: Effectiveness of residual current
devices (RCD) in TT, TN and IT systems

IEC 61557-11 ®
Edition 2.0 2020-06
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 11: Effectiveness of residual current monitors (RCM) in TT, TN and IT

systems
Sécurite électrique dans les réseaux de distribution basse tension au plus

égale à 1 000 V c.a. et 1 500 V c.c. – Dispositifs de contrôle, de mesure ou

de surveillance de mesures de protection –

Partie 11: Efficacité des contrôleurs d'isolement à courant différentiel résiduel

(RCM) dans les réseaux TT, TN et IT

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 17.220.20; 29.080.01; 29.240.01 ISBN 978-2-8322-8496-4

– 2 – IEC 61557-11:2020 © IEC 2020
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Requirements . 7
4.1 General . 7
4.2 Functions . 7
4.2.1 Operating test . 7
4.2.2 Non-operating test . 10
4.2.3 Test of actuating time . 10
4.3 Fault voltages exceeding U . 10
L
4.4 Overvoltage . 10
5 Marking and operating instructions . 11
5.1 Markings . 11
5.2 Operating instructions . 11
5.2.1 General . 11
5.2.2 Information . 11
5.2.3 Warnings . 11
6 Tests . 11
6.1 General . 11
6.2 Operating uncertainty . 12
6.3 Test of protection against high fault voltages . 13
6.4 Test of overvoltage . 13
Bibliography . 14

Figure 1 – Maximum step size of increasing smooth direct test current (I ) . 8
T
Figure 2 – Maximum gradient of linearly increasing smooth direct test current (I ) . 9
T
Figure 3 – Example for linearly increasing smooth direct test current (I ): I = 30 mA . 9
T ∆n
Table 1 – Calculation of operating uncertainty . 13

IEC 61557-11:2020 © IEC 2020 – 3 –
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 11: Effectiveness of residual current
monitors (RCM) in TT, TN and IT systems

FOREWORD
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