Safety of household and similar electrical appliances – Interpretations related to European Standards in the EN 60335 series; German version CLC/TR 50417:2014
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 10/01/2015

Safety of household and similar electrical appliances – Interpretations related to European Standards in the EN 60335 series; German version CLC/TR 50417:2010
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 05/01/2012