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BS EN IEC 61557-5:2021:2022 Edition

BS EN IEC 61557-5:2021:2022 Edition

$142.49

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 – Resistance to earth

Published By Publication Date Number of Pages
BSI 2022 24
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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.

PDF Catalog

PDF Pages PDF Title
2 undefined
7 Annex ZA (normative)Normative references to international publicationswith their corresponding European publications
12 English
CONTENTS
13 FOREWORD
15 1 Scope
2 Normative references
3 Terms and definitions
17 4 Requirements
4.1 General
4.2 Output voltage
4.3 Disturbance voltage
4.4 Permissible resistance of probe and auxiliary earth electrode
4.5 Electrical safety
18 4.6 Clamps intended to measure earth loop resistances according to IEC 60364�6:2016, Annex C, Clause C.3
5 Marking and operating instructions
5.1 Marking
5.2 Operating instructions
6 Tests
6.1 General
19 6.2 Operating uncertainty
Table 1 – Calculation of operating uncertainty
20 6.3 Electrical safety
21 Annex A (informative) Recommended test configuration for earth loop clamps
A.1 General
A.2 Test purpose
A.3 Test result
22 Bibliography

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BS EN IEC 61557-5:2021
$142.49