RO
SR EN IEC 61557-4:2022
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
<!-- NEW! -->IEC 61557-4:2019 is available as <a href="https://webstore.iec.ch/publication/65553">IEC 61557-4:2019 RLV</a> which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.</br></br>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.
Status :
Valid
Approval date : 1/31/2022
Romanian version publish date : 7/26/2023
Number of pages : 14
ICS : 17.220.20 Measurements of electical and magnetic quantities,29.080.01 Electrical insulation in general,29.240.01 Power transmission and distribution network in general
Technical Committee : 166 - Measuring equipment for electrical and electromagnetic quantities
- Replaces SR EN 61557-4:2007
- Normative reference SR EN 61010-031:2016
- Normative reference SR EN 61010-031:2016/A1:2021
- Normative reference SR EN 61010-031:2016/A11:2021
- Normative reference SR EN IEC 61010-2-030:2021
- Normative reference SR EN IEC 61010-2-030:2021/A11:2021
- Normative reference SR EN IEC 61557-1:2022