IEC 61557-1:2019
(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 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
IEC 61557-1:2019 specifies the general requirements applicable to measuring and monitoring equipment for testing the electrical safety in low-voltage distribution systems with nominal voltages up to 1 000 V AC and 1 500 V DC. When measuring equipment or measuring installations involve measurement tasks of various measuring equipment covered by this series of standards, then the part of this series relevant to each of the measurement tasks is applicable. Other parts of IEC 61557 can specify additional requirements or deviations. This document does not cover functional safety or cybersecurity. IEC 61557-1:2019 cancels and replaces the second edition published in 2007. This edition constitutes a technical revision. This third edition includes the following significant technical changes with respect to the previous edition:
a) terms aligned with IEC 60050;
b) measurement of uncertainty revised according to the equations in 4.2 of ISO/IEC Guide 98-3:2008 (GUM);
c) updated references for safety and EMC requirements;
d) updated references for marking and operating instructions;
e) updated references for testing safety and EMC;
f) Annex A contains an explanation of GUM;
g) Annex B addresses environmental aspects.
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
L'IEC 61557-1:2019 spécifie les exigences générales applicables aux dispositifs de mesure et de surveillance utilisés aux fins d'essai de la sécurité électrique dans les réseaux de distribution basse tension au plus égale à 1 000 V c.a. et 1 500 V c.c. Lorsque des appareils ou installations de mesure impliquent des mesures avec différents appareils couverts par la présente série de normes, la partie de cette série de normes qui est pertinente pour un type de mesure donné est applicable. Les autres parties de l'IEC 61557 peuvent spécifier des exigences supplémentaires ou des écarts. La présente norme ne couvre pas la sécurité fonctionnelle ou la cybersécurité. L'IEC 61557-1:2019 annule et remplace la deuxième édition parue en 2007. Cette édition constitue une révision technique. Cette troisième édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
a) alignement des termes sur ceux de l'IEC 60050;
b) mesure de l'incertitude revue conformément aux équations données en 4.2 du Guide ISO/IEC 98-3:2008 (GUM);
c) mise à jour des références aux exigences de sécurité et de CEM;
d) mise à jour des références au marquage et aux instructions de fonctionnement;
e) mise à jour des références aux essais de sécurité et de CEM;
f) l'Annexe A comporte une explication du GUM;
g) l'Annexe B porte sur les aspects environnementaux.
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IEC 61557-1 ®
Edition 3.0 2019-07
REDLINE VERSION
INTERNATIONAL
STANDARD
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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 1: General requirements
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International Standards for all electrical, electronic and related technologies.
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IEC 61557-1 ®
Edition 3.0 2019-07
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
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 1: General requirements
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 17.220.20; 29.080.01; 29.240.01 ISBN 978-2-8322-7229-9
– 2 – IEC 61557-1:2019 RLV © IEC 2019
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 8
2 Normative references . 8
3 Terms and definitions . 10
4 Requirements . 16
4.1 General requirements . 16
4.2 Influence quantities – Operating uncertainty (B), percentage operating
uncertainty (B [%]) . 16
4.3 Rated operating conditions . 17
4.4 Battery check test facility . 18
Terminals .
Class of protection .
Class of pollution .
Overvoltage category .
Measuring category .
4.5 Safety . 18
4.6 Electromagnetic compatibility . 19
4.6.1 Immunity . 19
4.6.2 Emission . 19
4.7 Vibration test Mechanical strength against vibration . 19
5 Marking and operating instructions . 19
5.1 General . 19
5.2 Marking . 19
5.3 Operating instructions . 20
5.3.1 Performance requirements . 20
5.3.2 Other information . 20
6 Tests . 20
6.1 General . 20
6.2 Operating uncertainty . 20
6.2.1 General . 20
6.2.2 Influence of changing position . 21
6.2.3 Influence of temperature . 21
6.2.4 Influence of the supply voltage . 21
6.3 Battery check test facility . 21
Protection class .
Terminals .
6.4 Safety tests . 21
6.5 EMC tests . 21
6.6 Mechanical requirements . 21
6.7 Marking and operating instructions . 22
6.8 Records . 22
Annex A (informative) Explanation of the application of GUM in series IEC 61557 . 23
A.1 Overview. 23
A.2 Basic model of evaluation of results under operational conditions . 23
A.2.1 General . 23
A.2.2 Standard uncertainty of a result . 23
A.2.3 Expanded uncertainty . 24
A.2.4 Relative operating uncertainty . 24
A.2.5 Calibration uncertainty . 24
A.3 Operating uncertainty calculations as basis for 4.1 . 25
A.3.1 Standard uncertainty . 25
A.3.2 Operating uncertainty in accordance with 4.1 . 25
Annex B (informative) Environmental aspects . 26
B.1 Overview. 26
B.2 Guidelines to establish a material declaration and end-of-life information . 26
B.2.1 General . 26
B.2.2 Guidelines for material declaration . 27
B.2.3 Guidelines for end-of-life (EoL) . 27
B.2.4 Example of a material declaration and end-of-life information . 27
Bibliography . 30
Figure B.1 – Components listed for EoL of a product . 29
Table B.1 – Material content according to IEC 62474 material classes . 28
– 4 – IEC 61557-1:2019 RLV © IEC 2019
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 1: General requirements
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.
This redline version of the official IEC Standard allows the user to iden
...
IEC 61557-1 ®
Edition 3.1 2024-10
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
colour
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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
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
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International Standards for all electrical, electronic and related technologies.
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IEC 61557-1 ®
Edition 3.1 2024-10
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
colour
inside
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
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 17.220.20, 29.080.01, 29.240.01 ISBN 978-2-8322-9879-4
REDLINE VERSION – 2 – IEC 61557-1:2019+AMD1:2024 CSV
© IEC 2024
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 8
4 Requirements . 12
4.1 General requirements . 12
4.2 Influence quantities – Operating uncertainty (B), percentage operating
uncertainty (B [%]) . 12
4.3 Rated operating conditions . 13
4.4 Battery test facility . 14
4.5 Safety . 14
4.6 Electromagnetic compatibility . 14
4.6.1 Immunity . 14
4.6.2 Emission . 14
4.7 Mechanical strength against vibration . 15
5 Marking and operating instructions . 15
5.1 General . 15
5.2 Marking . 15
5.3 Operating instructions . 15
5.3.1 Performance requirements . 15
5.3.2 Other information . 15
6 Tests . 16
6.1 General . 16
6.2 Operating uncertainty . 16
6.2.1 General . 16
6.2.2 Influence of changing position . 16
6.2.3 Influence of temperature . 16
6.2.4 Influence of the supply voltage . 16
6.3 Battery test facility . 16
6.4 Safety tests . 16
6.5 EMC tests . 17
6.6 Mechanical requirements . 17
6.7 Marking and operating instructions . 17
6.8 Records . 17
Annex A (informative) Explanation of the application of GUM in series IEC 61557 . 18
A.1 Overview. 18
A.2 Basic model of evaluation of results under operational conditions . 18
A.2.1 General . 18
A.2.2 Standard uncertainty of a result . 18
A.2.3 Expanded uncertainty . 19
A.2.4 Relative operating uncertainty . 19
A.2.5 Calibration uncertainty . 19
A.3 Operating uncertainty calculations as basis for 4.1 . 20
A.3.1 Standard uncertainty . 20
A.3.2 Operating uncertainty in accordance with 4.1 . 20
© IEC 2024
Annex B (informative) Environmental aspects . 21
B.1 Overview. 21
B.2 Guidelines to establish a material declaration and end-of-life information . 21
B.2.1 General . 21
B.2.2 Guidelines for material declaration . 22
B.2.3 Guidelines for end-of-life (EoL) . 22
B.2.4 Example of a material declaration and end-of-life information . 22
Bibliography . 25
Figure B.1 – Components listed for EoL of a product . 24
Table B.1 – Material content according to IEC 62474 material classes . 23
REDLINE VERSION – 4 – IEC 61557-1:2019+AMD1:2024 CSV
© IEC 2024
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 1: General requirements
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.
This consolidated version of the official IEC Standard and its amendment has been
prepared for user convenience.
IEC 61557-1 edition 3.1 contains the third edition (2019-07) [documents 85/689/FDIS and
85/692/RVD] and its amendment 1 (2024-10) [documents 85/900/CDV and 85/926/RVC].
In this Redline version, a vertical line in the margin shows where the technical content
is modified by amendment 1. Additions are in green
...
IEC 61557-1 ®
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 1: General requirements
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
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
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About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.
About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigendum or an amendment might have been published.
IEC publications search - webstore.iec.ch/advsearchform Electropedia - www.electropedia.org
The advanced search enables to find IEC publications by a The world's leading online dictionary on electrotechnology,
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committee,…). It also gives information on projects, replaced and French, with equivalent terms in 16 additional languages.
and withdrawn publications. Also known as the International Electrotechnical Vocabulary
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IEC publications issued since 2002. Some entries have been
IEC Customer Service Centre - webstore.iec.ch/csc collected from earlier publications of IEC TC 37, 77, 86 and
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IEC 61557-1 ®
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 1: General requirements
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
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 17.220.20; 29.080.01; 29.240.01 ISBN 978-2-8322-7141-4
– 2 – IEC 61557-1:2019 © IEC 2019
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 8
4 Requirements . 12
4.1 General requirements . 12
4.2 Influence quantities – Operating uncertainty (B), percentage operating
uncertainty (B [%]) . 12
4.3 Rated operating conditions . 13
4.4 Battery test facility . 14
4.5 Safety . 14
4.6 Electromagnetic compatibility . 14
4.6.1 Immunity . 14
4.6.2 Emission . 14
4.7 Mechanical strength against vibration . 14
5 Marking and operating instructions . 15
5.1 General . 15
5.2 Marking . 15
5.3 Operating instructions . 15
5.3.1 Performance requirements . 15
5.3.2 Other information . 15
6 Tests . 16
6.1 General . 16
6.2 Operating uncertainty . 16
6.2.1 General . 16
6.2.2 Influence of changing position . 16
6.2.3 Influence of temperature . 16
6.2.4 Influence of the supply voltage . 16
6.3 Battery test facility . 16
6.4 Safety tests . 16
6.5 EMC tests . 16
6.6 Mechanical requirements . 17
6.7 Marking and operating instructions . 17
6.8 Records . 17
Annex A (informative) Explanation of the application of GUM in series IEC 61557 . 18
A.1 Overview. 18
A.2 Basic model of evaluation of results under operational conditions . 18
A.2.1 General . 18
A.2.2 Standard uncertainty of a result . 18
A.2.3 Expanded uncertainty . 19
A.2.4 Relative operating uncertainty . 19
A.2.5 Calibration uncertainty . 19
A.3 Operating uncertainty calculations as basis for 4.1 . 20
A.3.1 Standard uncertainty . 20
A.3.2 Operating uncertainty in accordance with 4.1 . 20
Annex B (informative) Environmental aspects . 21
B.1 Overview. 21
B.2 Guidelines to establish a material declaration and end-of-life information . 21
B.2.1 General . 21
B.2.2 Guidelines for material declaration . 22
B.2.3 Guidelines for end-of-life (EoL) . 22
B.2.4 Example of a material declaration and end-of-life information . 22
Bibliography . 25
Figure B.1 – Components listed for EoL of a product . 24
Table B.1 – Material content according to IEC 62474 material classes . 23
– 4 – IEC 61557-1:2019 © IEC 2019
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 1: General requirements
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
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