DIN EN 62052-21:2017 Electricity metering equipment (AC) - General requirements, tests and test conditions - Part 21: Tariff and load control equipment (IEC 62052-21:2004 + A1:2016); German version EN 62052-21:2004 + A1:2017
2017DIN EN 62052-21:2017 Electricity metering equipment (AC) - General requirements, tests and test conditions - Part 21: Tariff and load control equipment (IEC 62052-21:2004 + A1:2016); German version EN 62052-21:2004 + A1:2017
2016DIN EN 62052-21/A1 E:2016 Draft Document - Electricity metering equipment (AC) - General requirements, tests and test conditions - Part 21: Tariff and load control equipment (IEC 13/1626/CDV:2015); German version EN 62052-21:2004/FprA1:2015
2005DIN EN 62052-21:2005 Electricity metering equipment (a.c.) - General requirements, tests and test conditions - Part 21: Tariff and load control equipment (IEC 62052-21:2004); German version EN 62052-21:2004