Rotating electrical machines - Part 18-33: Functional evaluation of insulation systems - Test procedures for form-wound windings - Multifactor evaluation by endurance under simultaneous thermal and electrical stresses (IEC/TS 60034-18-33:2010); German version CLC/TS 60034-18-33:2011
Deutsches Institut Fur Normung E.V. (German National Standard) , 07/01/2011
