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IEC 61557-5

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 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.
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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 number9782832271599
Pages24
File size1.05 MB
EditionDatePublicationEditionStatus
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