Redline version
All the changes between the new edition and previous edition of the publication are highlighted with track changes mode.
IEC 61557-4:2019 RLV
IEC 61557-4
IEC 61557-4:2019
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 4: Resistance of earth connection and equipotential bonding
IEC 61557-4:2019 specifies the requirements applicable to equipment for measuring the resistance of earth conductors, protective earth conductors and conductors for equipotential bonding, including their connections and terminals, with an indication of the measured value or an indication of the limits. IEC 61557-4:2019 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) complement to the measurement category in Clause 4;
b) correction of the equation for operating uncertainty;
c) complement to the requirements for measuring with DC;
d) alignment of the structure with that of the whole IEC 61557 series.
a) complement to the measurement category in Clause 4;
b) correction of the equation for operating uncertainty;
c) complement to the requirements for measuring with DC;
d) alignment of the structure with that of the whole IEC 61557 series.
CHF 40.-
Redline version
All the changes between the new edition and previous edition of the publication are highlighted with track changes mode.
DiscoverTechnical committee
TC 85 Measuring equipment for electrical and electromagnetic quantitiesCategory
Safety| Publication type | International Standard |
| Publication date | 2019-07-26 |
| Edition | 3.0 |
| ICS | 17.220.20 29.080.01 29.240.01 |
| Stability date | 2025 |
| ISBN number | 9782832271582 |
| Pages | 20 |
| File size | 1.00 MB |
Build resilient infrastructure, promote inclusive and sustainable industrialization and foster innovation