DIN EN 62054-21:2005 Electricity metering (a.c.) - Tariff and load control - Part 21: Particular requirements for time switches (IEC 62054-21:2004); German version EN 62054-21:2004
DIN EN 61038:1994DIN EN 61038/A1:1996DIN EN 61038/A2:1999DIN EN 62054-21:2003
DIN EN 62054-21:2005 history
2017DIN EN 62054-21:2017 Electricity metering (AC) - Tariff and load control - Part 21: Particular requirements for time switches (IEC 62054-21:2004 + A1:2017); German version EN 62054-21:2004 + A1:2017
2016DIN EN 62054-21/A1 E:2016 Draft Document - Electricity metering (a.c.) - Tariff and load control - Part 21: Particular requirements for time switches (IEC 13/1633A/CDV:2015); German version EN 62054-21:2004/FprA1:2015
2005DIN EN 62054-21:2005 Electricity metering (a.c.) - Tariff and load control - Part 21: Particular requirements for time switches (IEC 62054-21:2004); German version EN 62054-21:2004