IEC 61557-16:2023

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 16: Equipment for testing the effectiveness of the protective measures of electrical equipment and/or medical electrical equipment

IEC 61557-16:2023 specifies the requirements applicable to the performance for test and measurement equipment in order to determine the effectiveness of the protective measures for electrical equipment and/or medical electrical equipment described in IEC 62353.
This International Standard is to be used in conjunction with IEC 61557-1:2019.
IEC 61557-16:2023 cancels and replaces the first edition published in 2014. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) splitting of uncertainty requirements for medical and non-medical electrical equipment in 4.2.1;
b) addition of a definition of ranges with defined uncertainty in 4.2.1 to 4.2.7;
c) addition of an optional measuring device (MD) for non-medical devices in 4.2.1;
d) addition of a limitation of the maximum intrinsic uncertainty for medical applications at leakage current in 4.2.1;
e) change of 4.2.3 from test sockets to sockets for service purposes;
f) addition of a warning in the operating instructions;
g) integration of former 6.3 into 6.2;
h) update of Table 1;
i) alignment of the structure with that of the whole IEC 61557 series.

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 16: Équipement pour les essais de bon fonctionnement des mesures de protection des appareils électriques et/ou des appareils électromédicaux

L'IEC 61557-16:2023 spécifie les exigences de performance applicables pour les dispositifs de contrôle et de mesure afin de déterminer le bon fonctionnement des mesures de protection des appareils électriques et/ou des appareils électromédicaux décrits dans l’IEC 62353.
L'IEC 61557-16:2023 annule et remplace la première édition parue en 2014. Cette édition constitue une révision technique.
Cette édition inclut les modifications techniques majeures suivantes par rapport à l’édition précédente:
a) séparation des exigences d’incertitude pour les appareils électromédicaux et électriques non médicaux en 4.2.1;
b) ajout d’une définition de plages avec une incertitude définie de 4.2.1 à 4.2.7;
c) ajout d’un dispositif de mesure (DM) facultatif pour les appareils non médicaux en 4.2.1;
d) ajout d’une limitation de l’incertitude intrinsèque maximale pour les applications médicales au niveau du courant de fuite en 4.2.1;
e) changement en 4.2.3 de "prises de courant d’essai" en "prises de courant pour des besoins de service";
f) ajout d’un avertissement dans les instructions de fonctionnement;
g) intégration de l’ancien 6.3 en 6.2;
h) mise à jour du Tableau 1;
i) alignement de la structure sur celle de l’ensemble de la série IEC 61557.

General Information

• Status: Published
• Publication Date: 24-Aug-2023
• ICS: 17.220.20 - Measurement of electrical and magnetic quantities
• ICS: 29.080.01 - Electrical insulation in general
• Technical Committee: TC 85 - Measuring equipment for electrical and electromagnetic quantities
• Drafting Committee: WG 8 - TC 85/WG 8
• Current Stage: PPUB - Publication issued
• Start Date: 18-Aug-2023
• Completion Date: 25-Aug-2023

Relations

• Revises: IEC 61557-16:2014 - 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 16: Equipment for testing the effectiveness of the protective measures of electrical equipment and/or medical electrical equipment
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 61557-16 ®
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 16: Equipment for testing the effectiveness of the protective measures of
electrical equipment and/or medical electrical equipment

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 16: Équipement pour les essais de bon fonctionnement des mesures de
protection des appareils électriques et/ou des appareils électromédicaux
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IEC 61557-16 ®
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 16: Equipment for testing the effectiveness of the protective measures of

electrical equipment and/or medical electrical equipment

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 16: Équipement pour les essais de bon fonctionnement des mesures de

protection des appareils électriques et/ou des appareils électromédicaux

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 17.220.20, 29.080.01 ISBN 978-2-8322-7251-0

– 2 – IEC 61557-16:2023 © IEC 2023
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 8
4 Requirements . 9
4.1 General requirements . 9
4.2 Measuring functions . 9
4.2.1 Minimum measuring function requirements . 9
4.2.2 Measurement of the resistance of the protective bonding or the
protective earth resistance . 10
4.2.3 Measurement of insulation resistance . 10
4.2.4 Measurement of protective conductor current or equipment leakage
current with the alternative method . 11
4.2.5 Measurement of touch current, patient leakage current and applied part
leakage current with the alternative method . 11
4.2.6 Measurement of protective conductor current and equipment leakage
current with the direct or differential (residual) method . 12
4.2.7 Measurement of touch current, patient leakage current and applied part
leakage current with the direct or differential (residual) method . 13
4.3 Construction requirements . 13
4.3.1 Overvoltage capability . 13
4.3.2 Terminals . 13
4.3.3 Sockets for service purpose . 14
4.3.4 Degree of protection . 14
4.3.5 Class of protection . 14
4.3.6 Overvoltage and measurement categories . 14
4.3.7 Accessories . 14
5 Markings and operating instructions . 15
5.1 Markings . 15
5.2 Operating instructions . 15
6 Tests . 15
6.1 General . 15
6.2 Operating uncertainty . 15
6.3 Tests of measuring circuits according to measuring functions . 18
6.4 Test of construction requirements of test and measurement equipment . 18
Annex A (normative) Measuring circuit MD . 19
A.1 Current measuring circuit MD . 19
A.2 Frequency characteristic of current measuring circuit MD . 20
Bibliography . 21

Figure A.1 – Current measuring circuit MD . 19
Figure A.2 – Frequency characteristic of the current measuring circuit MD . 20

Table 1 – Calculation of operating uncertainty for leakage measurements with direct or
differential method . 17
Table 2 – Compliance tests of measuring circuits according to measuring function . 18
Table 3 – Compliance test of construction requirements of test and measuring
equipment . 18

– 4 – IEC 61557-16:2023 © 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 16: Equipment for testing the effectiveness of the protective
measures of electrical equipment and/or medical electrical equipment

FOREWORD
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