EN IEC 61557-1:2021/A1:2024
(Amendment)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 1: General requirements
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 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 1: Allgemeine Anforderungen
Sécurité 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 1: Exigences générales
Električna varnost v nizkonapetostnih razdelilnih sistemih za izmenične napetosti do 1 kV in enosmerne napetosti do 1,5 kV - Oprema za preskušanje, merjenje ali nadzorovanje zaščitnih ukrepov - 1. del: Splošne zahteve (IEC 61557-1:2019/AMD1:2024)
General Information
Relations
Overview
EN IEC 61557-1:2021/A1:2024 sets forth the general requirements for equipment used in testing, measuring, or monitoring protective measures in low voltage distribution systems. It specifically applies to systems with alternating current (AC) voltages up to 1,000 V and direct current (DC) voltages up to 1,500 V. As part of the IEC 61557 series, this amendment enhances the standard by updating essential specifications to ensure electrical safety across low voltage distribution networks in Europe.
This standard is published by the European Committee for Electrotechnical Standardization (CENELEC) and aligns with international standards by the International Electrotechnical Commission (IEC). It supports manufacturers, electrical engineers, and safety inspectors by providing a solid framework for designing and assessing equipment that safeguards electrical infrastructure and personnel.
Key Topics
Scope and Application: Focuses on equipment for testing, measuring, or monitoring protective measures designed to ensure electrical safety in low voltage distribution systems subjected to voltage limits of 1,000 V AC and 1,500 V DC.
General Requirements: Specifies performance criteria, safety measures, and electromagnetic compatibility (EMC) requirements necessary for reliable operation of protective measurement equipment.
Amendments and Updates: Incorporates modifications based on IEC 61557-1:2019/AMD1:2024, ensuring harmonization with newer technical advances and regulatory demands for immunity and testing methods.
Immunity and EMC Compliance: Refers to IEC 61326 series standards for testing immunity and EMC requirements-key for ensuring equipment resilience against electromagnetic disturbances in real-world environments.
Normative References: Incorporates related IEC standards such as IEC 61326-2-4 for specific EMC requirements on insulation monitoring devices and insulation fault location equipment.
National Implementation: Requires enforcement by CENELEC members, with national adoption and withdrawal of conflicting standards by set deadlines to maintain uniform safety levels across member countries.
Applications
EN IEC 61557-1:2021/A1:2024 is essential for various practical applications, including:
Safety Testing Equipment: Calibration and validation of instruments used to test electrical protective devices like residual current devices (RCDs), insulation monitoring devices, and earth fault circuit interrupters within low voltage networks.
Maintenance and Monitoring: Enabling continuous monitoring of protective measures in industrial, commercial, and residential electrical installations to detect faults or degradation that could compromise safety.
Electrical Installation Compliance: Supporting electricians, inspectors, and certification bodies in verifying that electrical distribution systems comply with recognized safety standards, reducing risk to personnel and equipment.
Design of Protective Equipment: Guiding manufacturers in the design and quality assurance of test and measurement devices to meet stringent safety, performance, and EMC criteria.
Regulatory Compliance: Assisting countries and organizations to align local electrical safety regulations with international best practices by providing a harmonized, consensus-based reference.
Related Standards
For comprehensive compliance and practical implementation, EN IEC 61557-1:2021/A1:2024 should be used in conjunction with related standards such as:
IEC 61557 Series: Parts 2 to 9 address specific measurement and testing devices for protective measures including earth resistance, insulation resistance, loop impedance, and fault location equipment.
IEC 61326-1 and IEC 61326-2-4: Define electromagnetic compatibility requirements and immunity tests for electrical equipment used in measurement and monitoring, ensuring accurate and interference-free operation.
National Electrotechnical Standards: Standards from individual CENELEC members which adopt EN IEC 61557-1:2021/A1:2024 without modifications, ensuring consistency across Europe.
Adherence to EN IEC 61557-1:2021/A1:2024 is crucial for maintaining high levels of electrical safety in low voltage distribution systems. It enables reliable operation of testing, measuring, and monitoring equipment, ultimately protecting infrastructure and ensuring compliance with international safety regulations.
Frequently Asked Questions
EN IEC 61557-1:2021/A1:2024 is a amendment published by CLC. Its full title is "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 1: General requirements". This standard covers: 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 1: General requirements
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 1: General requirements
EN IEC 61557-1:2021/A1:2024 is classified under the following ICS (International Classification for Standards) categories: 17.220.20 - Measurement of electrical and magnetic quantities; 29.080.01 - Electrical insulation in general; 29.240.01 - Power transmission and distribution networks in general. The ICS classification helps identify the subject area and facilitates finding related standards.
EN IEC 61557-1:2021/A1:2024 has the following relationships with other standards: It is inter standard links to EN IEC 61557-1:2021. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN IEC 61557-1:2021/A1:2024 is associated with the following European legislation: EU Directives/Regulations: 2014/30/EU, 2014/35/EU; Standardization Mandates: M/511, M/552. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.
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Standards Content (Sample)
SLOVENSKI STANDARD
01-marec-2025
Električna varnost v nizkonapetostnih razdelilnih sistemih za izmenične napetosti
do 1 kV in enosmerne napetosti do 1,5 kV - Oprema za preskušanje, merjenje ali
nadzorovanje zaščitnih ukrepov - 1. del: Splošne zahteve (IEC 61557-
1:2019/AMD1:2024)
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 1: General
requirements (IEC 61557-1:2019/AMD1:2024)
Elektrische Sicherheit in Niederspannungsnetzen bis AC 1 000 V und DC 1 500 V -
Geräte zum Prüfen, Messen oder Überwachen von Schutzmaßnahmen - Teil 1:
Allgemeine Anforderungen (IEC 61557-1:2019/AMD1:2024)
Sécurité 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 1: Exigences générales (IEC 61557-1:2019/AMD1:2024)
Ta slovenski standard je istoveten z: EN IEC 61557-1:2021/A1:2024
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
29.240.01 Omrežja za prenos in Power transmission and
distribucijo električne energije distribution networks in
na splošno general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD EN IEC 61557-1:2021/A1
NORME EUROPÉENNE
EUROPÄISCHE NORM December 2024
ICS 17.220.20; 29.080.01; 29.240.01
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 1: General
requirements
(IEC 61557-1:2019/AMD1:2024)
Sécurité électrique dans les réseaux de distribution basse Elektrische Sicherheit in Niederspannungsnetzen bis AC 1
tension au plus égale à 1 000 V c.a. et 1 500 V c.c. - 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 1: Allgemeine
mesures de protection - Partie 1: Exigences générales Anforderungen
(IEC 61557-1:2019/AMD1:2024) (IEC 61557-1:2019/AMD1:2024)
This amendment A1 modifies the European Standard EN IEC 61557-1:2021; it 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 amendment 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 amendment 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 61557-1:2021/A1:2024 E
European foreword
The text of document 85/900/CDV, future edition 3 of IEC 61557-1/AMD1, 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 61557-1:2021/A1:2024.
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
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.
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 61557-1:2019/AMD1:2024 was approved by CENELEC as
a European Standard without any modification.
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.
Add the following reference:
Publication Year Title EN/HD Year
IEC 61326-2-4 - Electrical equipment for measurement, control EN IEC 61326-2-4 -
and laboratory use - EMC requirements - Part
2-4: Particular requirements - Test
configurations, operational conditions and
performance criteria for insulation monitoring
devices according to IEC 61557-8 and for
equipment for insulation fault location according
to IEC 61557-9
IEC 61557-1 ®
Edition 3.0 2024-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
AMENDMENT 1
AMENDEMENT 1
Electrical safety in low voltage distribution systems up to 1 000 V AC and 1 500 V
DC –
...
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