SIST EN IEC 61557-5:2022
(Main)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 5: Resistance to earth (IEC 61557-5:2019)
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 5: Resistance to earth (IEC 61557-5:2019)
IEC 61557-5:2019 is available as IEC 61557-5:2019 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.
IEC 61557-5:2019 specifies the requirements applicable to measuring equipment for measuring the resistance to earth using an AC voltage. IEC 61557-5:2019 cancels and replaces the second edition published in 2007. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
a) definitions and symbols in Clause 3 modified;
b) subclauses in Clause 4 restructured and aligned with other parts of the series;
c) limits for reduced voltages 25 V RMS or 35 V peak removed from 4.5;
d) requirements for clamps added;
e) marking for rated voltages to earth and measurement category added to Clause 5;
f) warning about absence of hazardous voltage added in Clause 5;
g) the term "percentage operating uncertainty" replaced by "operating uncertainty" in Clause 6;
h) equation for uncertainty corrected in Table 1;
i) new Annex A on test measurements with loop clamps added.
Elektrische Sicherheit in Niederspannungsnetzen bis AC 1 000 V und DC 1 500 V - Geräte zum Prüfen, Messen oder Überwachen von Schutzmaßnahmen - Teil 5: Erdungwiderstand (IEC 61557-5:2019)
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 5: Résistance à la terre (IEC 61557-5:2019)
IEC 61557-5:2019 est disponible sous forme de IEC 61557-5:2019 RLV qui contient la Norme internationale et sa version Redline, illustrant les modifications du contenu technique depuis l'édition précédente.
L'IEC 61557-5:2019 spécifie les exigences applicables aux appareils de mesure destinés à mesurer la résistance à la terre en utilisant une tension alternative. L'IEC 61557-5:2019 annule et remplace la deuxième édition parue en 2007. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
a) modification des définitions et symboles de l'Article 3;
b) réorganisation des paragraphes de l'Article 4 et alignement sur les autres parties de la série;
c) suppression des limites de tensions réduites de 25 V (valeur efficace) ou de 35 V (valeur de crête) en 4.5;
d) ajout d'exigences relatives aux pinces;
e) ajout du marquage relatif aux tensions assignées à la terre et à la catégorie de mesure à l'Article 5;
f) ajout d'un avertissement relatif à l'absence de tension dangereuse à l'Article 5;
g) remplacement du terme "incertitude de fonctionnement en pourcentage" par "incertitude de fonctionnement" à l'Article 6;
h) correction de l'équation relative à l'incertitude dans le Tableau 1;
i) ajout de l'Annexe A relative aux mesures d'essai avec des pinces de boucle.
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 - 5. del: Ozemljitvena upornost (IEC 61557-5:2019)
Ta del standarda IEC 61557 določa zahteve, ki veljajo za opremo za merjenje upornosti ozemljitve z uporabo izmenične napetosti.
General Information
Relations
Overview
EN IEC 61557-5:2021 (equivalent to IEC 61557-5:2019) defines requirements for equipment that measures resistance to earth in low-voltage distribution systems (up to 1 000 V AC and 1 500 V DC) using an AC test voltage. It is part of the IEC 61557 series on electrical safety for testing, measuring and monitoring protective measures. This third edition is a technical revision that updates definitions, test structures and adds requirements for clamp-type instruments and marking.
Key topics and technical requirements
- Scope: Requirements applicable to instruments that measure earth resistance, including handheld testers and earth loop clamps that operate with an AC measuring voltage.
- Output and disturbance voltages: Specifications for acceptable output voltage and limits on disturbance voltages generated during measurement.
- Probe and auxiliary electrode: Permissible resistance requirements for probes and auxiliary earth electrodes used during testing.
- Clamps: New requirements added for clamps intended to measure earth loop resistances (loop clamps), plus a recommended test configuration in Annex A.
- Electrical safety: Safety provisions aligned with IEC 61010 series and live-working references; includes a warning about absence of hazardous voltage.
- Marking and instructions: Instruments must be marked with rated voltages to earth and measurement category, and provide clear operating instructions and safety warnings.
- Operating uncertainty: The standard replaces “percentage operating uncertainty” with operating uncertainty terminology and corrects the uncertainty calculation (see Table 1).
- Tests: Defined test procedures for performance, safety and uncertainty verification.
Applications and who uses it
EN IEC 61557-5 is intended for:
- Test-equipment manufacturers designing and certifying earth resistance testers and loop clamps.
- Electrical installers and maintenance engineers performing earthing system verification and commissioning.
- Inspection and verification bodies, electrical safety auditors and compliance officers verifying that measurement equipment meets safety and accuracy requirements.
- Utilities and building owners who require validated measuring devices for routine earthing checks and fault investigations.
Practical applications include site earthing resistance measurement, periodic verification of earth rods and electrode networks, and earth loop resistance checks without disconnection (using loop clamps where appropriate).
Related standards
- EN IEC 61557-1:2021 - General requirements for equipment in the IEC 61557 series.
- IEC 61010 series - Safety requirements for electrical measurement equipment.
- IEC 60364-6 - Low-voltage installation verification (references for earthing practice).
Keywords: EN IEC 61557-5:2021, IEC 61557-5, resistance to earth, earth resistance testers, earth loop clamps, low voltage testing, operating uncertainty, measurement category, electrical safety.
Frequently Asked Questions
SIST EN IEC 61557-5:2022 is a standard published by the Slovenian Institute for Standardization (SIST). 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 5: Resistance to earth (IEC 61557-5:2019)". This standard covers: <!-- NEW! -->IEC 61557-5:2019 is available as <a href="https://webstore.iec.ch/publication/65554">IEC 61557-5:2019 RLV</a> which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.</br></br>IEC 61557-5:2019 specifies the requirements applicable to measuring equipment for measuring the resistance to earth using an AC voltage. IEC 61557-5:2019 cancels and replaces the second edition published in 2007. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) definitions and symbols in Clause 3 modified; b) subclauses in Clause 4 restructured and aligned with other parts of the series; c) limits for reduced voltages 25 V RMS or 35 V peak removed from 4.5; d) requirements for clamps added; e) marking for rated voltages to earth and measurement category added to Clause 5; f) warning about absence of hazardous voltage added in Clause 5; g) the term "percentage operating uncertainty" replaced by "operating uncertainty" in Clause 6; h) equation for uncertainty corrected in Table 1; i) new Annex A on test measurements with loop clamps added.
<!-- NEW! -->IEC 61557-5:2019 is available as <a href="https://webstore.iec.ch/publication/65554">IEC 61557-5:2019 RLV</a> which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.</br></br>IEC 61557-5:2019 specifies the requirements applicable to measuring equipment for measuring the resistance to earth using an AC voltage. IEC 61557-5:2019 cancels and replaces the second edition published in 2007. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) definitions and symbols in Clause 3 modified; b) subclauses in Clause 4 restructured and aligned with other parts of the series; c) limits for reduced voltages 25 V RMS or 35 V peak removed from 4.5; d) requirements for clamps added; e) marking for rated voltages to earth and measurement category added to Clause 5; f) warning about absence of hazardous voltage added in Clause 5; g) the term "percentage operating uncertainty" replaced by "operating uncertainty" in Clause 6; h) equation for uncertainty corrected in Table 1; i) new Annex A on test measurements with loop clamps added.
SIST EN IEC 61557-5:2022 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.
SIST EN IEC 61557-5:2022 has the following relationships with other standards: It is inter standard links to SIST EN 61557-5:2007. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
SIST EN IEC 61557-5:2022 is associated with the following European legislation: EU Directives/Regulations: 2014/30/EU, 2014/35/EU, 2014/53/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.
You can purchase SIST EN IEC 61557-5:2022 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of SIST standards.
Standards Content (Sample)
SLOVENSKI STANDARD
01-marec-2022
Nadomešča:
SIST EN 61557-5:2007
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 - 5. del: Ozemljitvena upornost (IEC 61557-5:2019)
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 5:
Resistance to earth (IEC 61557-5:2019)
Elektrische Sicherheit in Niederspannungsnetzen bis AC 1 000 V und DC 1 500 V -
Geräte zum Prüfen, Messen oder Überwachen von Schutzmaßnahmen - Teil 5:
Erdungwiderstand (IEC 61557-5:2019)
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 5: Résistance à la terre (IEC 61557-5:2019)
Ta slovenski standard je istoveten z: EN IEC 61557-5:2021
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 61557-5
NORME EUROPÉENNE
EUROPÄISCHE NORM
December 2021
ICS 17.220.20; 29.080.01; 29.240.01 Supersedes EN 61557-5:2007 and all of its amendments
and corrigenda (if any)
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 5: Resistance to earth
(IEC 61557-5:2019)
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 5:
mesures de protection - Partie 5: Résistance à la terre Erdungwiderstand
(IEC 61557-5:2019) (IEC 61557-5:2019)
This European Standard was approved by CENELEC on 2021-11-10. 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
© 2021 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 61557-5:2021 E
European foreword
The text of document 85/685/FDIS, future edition 3 of IEC 61557-5, 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 61557-5:2021.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2022-08-10
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2024-11-10
document have to be withdrawn
This document supersedes EN 61557-5:2007 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 61557-5:2019 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.cenelec.eu.
Publication Year Title EN/HD Year
IEC 60364-6 2016 Low voltage electrical installations - Part 6: HD 60364-6 2016
Verification
- - + A11 2017
- - + A12 2017
IEC 61010-1 2010 Safety requirements for electrical EN 61010-1 2010
equipment for measurement, control, and
laboratory use - Part 1: General
requirements
+ A1 (mod) 2016 + A1 2019
IEC 61010-2-030 2017 Safety requirements for electrical EN IEC 61010-2-030 2021
equipment for measurement, control, and
laboratory use - Part 2-030: Particular
requirements for equipment having testing
or measuring circuits
- - + A11 2021
IEC 61010-2-032 - Safety requirements for electrical EN IEC 61010-2-032 -
equipment 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 61243-3 - Live working - Voltage detectors - Part 3: EN 61243-3 -
Two-pole low-voltage type
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 61557-5 ®
Edition 3.0 2019-07
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 5: Resistance to earth
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 5: Résistance à la terre
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 17.220.20; 29.080.01; 29.240.01 ISBN 978-2-8322-7159-9
– 2 – IEC 61557-5:2019 © IEC 2019
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Requirements . 7
4.1 General . 7
4.2 Output voltage . 7
4.3 Disturbance voltage . 7
4.4 Permissible resistance of probe and auxiliary earth electrode . 7
4.5 Electrical safety . 7
4.6 Clamps intended to measure earth loop resistances according to
IEC 60364-6:2016, Annex C, Clause C.3 . 8
5 Marking and operating instructions . 8
5.1 Marking . 8
5.2 Operating instructions . 8
6 Tests . 8
6.1 General . 8
6.2 Operating uncertainty . 9
6.3 Electrical safety . 10
Annex A (informative) Recommended test configuration for earth loop clamps . 11
A.1 General . 11
A.2 Test purpose . 11
A.3 Test result. 11
Bibliography . 12
Table 1 – Calculation of operating uncertainty . 9
IEC 61557-5:2019 © IEC 2019 – 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 5: Resistance to earth
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
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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
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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 61557-5 has been prepared by IEC technical committee 85:
Measuring equipment for electrical and electromagnetic quantities.
This third edition cancels and replaces the second edition published in 2007. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previ
...
The article discusses the requirements for measuring equipment that measures the resistance to earth using an AC voltage, as specified in the SIST EN IEC 61557-5:2022 standard. This standard relates to electrical safety in low voltage distribution systems up to 1,000 V AC and 1,500 V DC.
記事のタイトル：SIST EN IEC 61557-5：2022 - 1 000 V ACおよび 1 500 V DCまでの低電圧配電システムにおける電気安全性 - 保護対策の試験、計測または監視のための装置 - 第5部：接地抵抗（IEC 61557-5：2019） 記事の内容：このIEC 61557の一部では、交流電圧を使用して接地抵抗を計測するための計測装置に適用される要件が規定されています。この規格は、1,000V ACおよび1,500V DCまでの低電圧配電システムに関連しています。
기사 제목: SIST EN IEC 61557-5:2022 - 저전압 분배 시스템에서의 전기 안전성 - 보호 조치를 테스트, 측정 또는 모니터링하는 장비 - 제5 부: 접지 저항 (IEC 61557-5:2019) 기사 내용: 이 IEC 61557의 이 부분은 교류 전압을 사용하여 접지 저항을 측정하는 측정 장비에 적용되는 요구 사항을 명시합니다. 이 표준은 1,000V AC와 1,500V DC까지의 저전압 분배 시스템과 관련됩니다.
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