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UNE-EN 62052-21
Electricity metering equipment (a.c.) - General requirements, tests and test conditions - Part 21: Tariff and load control equipment (IEC 62052-21:2004)
Edition
2006-11-29
NF C44-052-21/A1 ; NF EN 62052-21/A1:2017-05-19
Electricity metering equipment (AC) - General requirements, tests and test conditions - Part 21: tariff and load control equipment
Edition
2017-05-19
UNE-EN 62052-21/A1
Electricity metering equipment (AC) - General requirements, tests and test conditions - Part 21: Tariff and load control equipment
Edition
2017-05-24
UNE-EN 62052-21/A1/AC
Electricity metering equipment (AC) - General requirements, tests and test conditions - Part 21: Tariff and load control equipment
Edition
2018-06-06