Proceedings of 2001 International Symposium on Electrical Insulating Materials (ISEIM 2001). 2001 Asian Conference on Electrica
DOI: 10.1109/iseim.2001.973784
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Abstract: Different portions of stator insulation are subjected to multistresses with different strength during the operation of large generators. In order to study the aging extent of stator insulation in different portions, diagnostic tests are performed on the specimens from stator bars of a large turbogenerator, which has operated for 16 years. The tests include, polarization index test, dielectric loss measurement at various voltages and temperatures, ac current measurement, partial discharge test and acoustic dete… Show more

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