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
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 07/01/2011
