DIN EN 60034-18-21:2013
旋转电机.第18-21部分:绝缘系统功能性评定.散绕组试验规程.热评定和分级(IEC 60034-18-21-2012).德文版本EN 60034-18-21-2013
Rotating electrical machines - Part 18-21: Functional evaluation of insulation systems - Test procedures for wire-wound windings - Thermal evaluation and classification (IEC 60034-18-21:2012); German version EN 60034-18-21:2013