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IEC 61557-3:2019 RLV
IEC 61557-3
IEC 61557-3:2019
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 3: Loop impedance
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.
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.
CHFÂ 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 | 9782832271568 |
| Pages | 21 |
| File size | 1.04 MB |
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