DIN EN 61881-3:2013 Railway applications - Rolling stock equipment - Capacitors for power electronics - Part 3: Electric double-layer capacitors (IEC 61881-3:2012); German version EN 61881-3:2012
2014DIN EN 61881-3:2014 Railway applications - Rolling stock equipment - Capacitors for power electronics - Part 3: Electric double-layer capacitors (IEC 61881-3:2012 + A1:2013); German version EN 61881-3:2012 + A1:2013
2013DIN EN 61881-3:2013 Railway applications - Rolling stock equipment - Capacitors for power electronics - Part 3: Electric double-layer capacitors (IEC 61881-3:2012); German version EN 61881-3:2012