EN 50209:1998

Test of insulation of bars and coils of high-voltage machines EN 50209:1998

Publication date:   Mar 19, 2004

General information

90.93 Standard confirmed   Nov 9, 2022


CLC/TC 2 Rotating machinery

European Norm

29.080   Insulation | 29.160.10   Components for rotating machines



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This specification applies to rotating electrical machines with rated voltages (Un) from 5 kV to 24 kV inclusive and with rated output from 5 MVA upwards and from 5 MW upwards for motors Requirements for machines with rated voltage above 24 kV should remain the subject of individual agreement This specification is also applicable to machines with rated outputs between 1MVA( 1MW) and 5 MVA(5MW) and with rated voltages of 5 kV and above, provided its use has been agreed beforehand In the case of machines whose windings are cured in the stator, tests on the separate winding elements are not possible; for these machines the requirements in Part B apply. The test of the conductor lamination insulation must however be carried out in accordance with 23 of Part A of this standard

Life cycle


HD 345 S1:1976


EN 50209:1998
90.93 Standard confirmed
Nov 9, 2022