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IEC 61557-3

IEC 61557-3:2019
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 3: Loop impedance
IEC 61557-3:2019 is available as IEC 61557-3:2019 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 61557-3:2019 specifies the requirements applicable to equipment for measuring the loop impedance between a line conductor and protective conductor; between a line conductor and neutral; or between two line conductors by using the voltage drop when the circuit under test is loaded. IEC 61557-3:2019 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) addition of equirements as regards the measurement category;
b) addition of new requirements for operating instructions;
c) alignment of the structure with that of the whole IEC 61557 series.
BASE PUBLICATION
English/French
Redline version

All the changes between the new edition and previous edition of the publication are highlighted with track changes mode.

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Technical committee

TC 85 Measuring equipment for electrical and electromagnetic quantities

Category

Safety
Publication typeInternational Standard
Publication date2019-07-26
Edition3.0
ICS

17.220.20

29.080.01

29.240.01

Stability date2025
ISBN number9782832271568
Pages21
File size1.04 MB
EditionDatePublicationEditionStatus
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