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SR EN IEC 61557-3:2022
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 3: Loop impedance
<!-- NEW! -->IEC 61557-3:2019 is available as <a href="https://webstore.iec.ch/publication/65552">IEC 61557-3:2019 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 61557-3:2019 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.
Status :
Valid
Approval date : 6/30/2022
Number of pages : 16
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 61557-3:2007
- Normative reference SR EN 61010-1:2011
- Normative reference SR EN 61010-1:2011/A1:2019
- 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