I.S. EN IEC 61557-12:2022/A1:2022
Current
The latest, up-to-date edition.
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 12: Power metering and monitoring devices (PMD)
Hardcopy , PDF
English
27-01-2022
For Harmonized Standards, check the EU site to confirm that the Standard is cited in the Official Journal.
Only cited Standards give presumption of conformance to New Approach Directives/Regulations.
Dates of withdrawal of national standards are available from NSAI.
FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Terms, definitions and notations
4 Requirements
5 Marking and operating instructions
6 Tests
Annex A (informative) Metering, measuring and monitoring applications
Annex B (informative) Definitions of electrical parameters
Annex C (informative) Convention about the sign of the power factor
Annex D (normative) Definitions of minimum, maximum, peak and demand values
Annex E (informative) Intrinsic uncertainty and operating uncertainty
Annex F (informative) Recommended sensor classes for the different kinds of PMD
Annex G (informative) Notion of measurement uncertainty
Bibliography
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