Influence of Insulation System Methods on Dissipation Factor and Voltage Endurance
This paper reviews the comparison of Resin Rich (RR) and Vacuum Pressure Impregnation (VPI) insulation system qualities for stator bar of rotating electrical machines. Voltage endurance and tangent delta are two diagnostic tests to determine the quality of insulation systems. The paper describes the trend of dissipation factor while performing voltage endurance test for different stator bar samples made with RR and VPI insulation system methods. Some samples were made with the same strands and insulation thickness but with different main wall material to prove the influence of insulation system methods on stator bar quality. Also, some of the samples were subjected to voltage at the temperature of their insulation class, and their dissipation factor changes were measured and studied.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.3346748Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 93
 Ladstätter, W., Marek, P., Grubelnik, W., & Senn, F. (2006). New insulation technology impacts generator design. In Power-Gen International Conference.
 IEEE Recommended Practice for Measurement of Power Factor Tip-Up of Electric Machinery Stator Coil Insulation," in IEEE Std 286-2000 , vol., no., pp.i-29, 2001
 IEEE Trial-Use Standard for Voltage-Endurance Testing of Form-Wound Coils and Bars for Hydrogenerators," in IEEE Std 1553-2002 , vol., no., pp.0_1-, 2003
 IEC60034-18-33:2010." Rotating electrical machines - Part 18-33: Functional evaluation of insulation systems"
 IEC60085:2007-11 Edition4.0," Thermal evaluation and designation-Table.1:Thermal Class Assignment."