Title :
Effect of reduced viscosity on the electrical characteristics of transformer and switchgear oils
Author :
Pompili, Massimo ; Mazzetti, Carlo
Author_Institution :
Rome Univ.
Abstract :
The electrical characteristics of two mineral oils of different viscosity, suitable for use in transformers and switchgears, are compared. It is found that, whereas the higher viscosity oil exhibits greater dielectric losses at more elevated temperatures, it has lower AC and impulse breakdown strength and is characterized by a lower partial discharge inception voltage.
Keywords :
electric strength; insulating oils; insulation testing; partial discharges; power transformer insulation; power transformer testing; switchgear insulation; switchgear testing; viscosity; AC breakdown strength; dielectric losses; electrical characteristics; impulse breakdown strength; mineral oils; partial discharge inception voltage; reduced viscosity effects; switchgear oils; transformer oils; Breakdown voltage; Dielectric breakdown; Dielectric losses; Electric variables; Minerals; Oil insulation; Petroleum; Switchgear; Temperature; Viscosity;
Conference_Titel :
Electrical Insulation, 2002. Conference Record of the 2002 IEEE International Symposium on
Print_ISBN :
0-7803-7337-5
DOI :
10.1109/ELINSL.2002.995951
