IEC 61557-7:2019/AMD1:2023

IEC 61557-7 ®
Edition 3.0 2023-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
AMENDMENT 1
AMENDEMENT 1
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 7: Phase sequence
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 7: Ordre de phases
IEC 61557-7:2019-07/AMD1:2023-08(en-fr)

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IEC 61557-7 ®
Edition 3.0 2023-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
AMENDMENT 1
AMENDEMENT 1
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 7: Phase sequence
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 7: Ordre de phases
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 17.220.20, 29.080.01, 29.240.01 ISBN 978-2-8322-7227-5

– 2 – IEC 61557-7:2019/AMD1:2023
© 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 7: Phase sequence
AMENDMENT 1
FOREWORD
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Amendment 1 to IEC 61557-7:2019 has been prepared by IEC technical committee 85:
Measuring equipment for electrical and electromagnetic quantities.

© IEC 2023
The text of this Amendment is based on the following documents:
Draft Report on voting
85/872/FDIS 85/882/RVD
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this Amendment is English.
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement,
available at www.iec.ch/members_experts/refdocs. The main document types developed by
IEC are described in greater detail at www.iec.ch/publications/.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under webstore.iec.ch in the data related to the
specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
___________
1 Scope
Replace the NOTE by the following:
NOTE Common three-phase distribution systems are depicted in IEC 61010-1:2010, Annex I and
IEC 61010-1:2010/AMD1:2016, Annex I.
4 Requirements
4.3 Measuring equipment
4.3.1 General
Replace the last paragraph by the following:
The phase sequence test (see Annex B) can be realised with test probes for direct contact
with live parts, conductors or terminals, or with capacitive test clips for non-contact phase
detection on insulated or uninsulated conductors.
4.3.3 Test leads for direct contact with live parts and accessories
Replace the fifth paragraph by the following:
Portable measuring equipment, together with its test leads, shall comply with the
requirements for mechanical strength in accordance with IEC 61010-1 and in addition shall be
tested in accorda
...