DS DS/EN 50526-1
DS DSEN 50526-1 2012-FEB-24 Ralway applcatons - Fxed nstallatons - DC surge arresters and voltage lmtng devces - Part 1 Surge arresters
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This European Standard applies to non-linear metal-oxide resistor type surge arresters without spark gaps 76 designed to limit voltage surges on d.c. systems with nominal voltage up to 3 kV.