DIN EN 62053-52:2006 Electricity metering equipment (AC) - Particular requirements - Part 52: Symbols (IEC 62053-52:2005); German version EN 62053-52:2005
2006DIN EN 62053-52:2006 Electricity metering equipment (AC) - Particular requirements - Part 52: Symbols (IEC 62053-52:2005); German version EN 62053-52:2005