EN 62054-21:2004/A1:2017/AC:2018-04
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The latest, up-to-date edition.
ELECTRICITY METERING (AC) - TARIFF AND LOAD CONTROL - PART 21: PARTICULAR REQUIREMENTS FOR TIME SWITCHES (IEC 62054-21:2004/A1:2017/COR1:2018)
04-27-2018
INTRODUCTION
1 Scope
2 Normative references
3 Terms and definitions
4 Standard electrical values
5 Mechanical requirements and tests
5.1 Dials
5.2 Digital display
6 Climatic conditions, requirements and tests
7 Electrical requirements and tests
7.1 Supply voltage
7.2 Heating
7.3 Insulation
7.4 Output elements
7.5 Functional requirements and tests - accuracy
7.6 Electromagnetic compatibility (EMC)
7.7 Radio interference suppression
8 Test conditions and type test
Annex A (informative) Acceptance tests
Annex ZA (normative) Normative references to international
publications with their corresponding European
publications
Annex ZZ (informative) Coverage of Essential Requirements of
EC Directives
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