DIN EN 62053-21:2003 Electricity metering equipment (a.c.) - Particular Requirements - Part 21: Static meters for active energy (classes 1 and 2) (IEC 62053-21:2003); German version EN 62053-21:2003
2003DIN EN 62053-21:2003 Electricity metering equipment (a.c.) - Particular Requirements - Part 21: Static meters for active energy (classes 1 and 2) (IEC 62053-21:2003); German version EN 62053-21:2003