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

Note: a redline version of this publication exists
IEC 61557-5:2019 RLV

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Abstract

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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Additional information

Publication typeInternational Standard
Publication date2019-07-26
Edition3.0
Available language(s)English/French
TC/SCTC 85 - Measuring equipment for electrical and electromagnetic quantitiesrss
ICS17.220.20 - Measurement of electrical and magnetic quantities
29.080.01 - Electrical insulation in general
29.240.01 - Power transmission and distribution networks in general
Stability date  2025
Pages24
File size1102 KB

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