Title :
The properties of thermally stimulated currents in epoxy composites degraded with electrical stress
Author :
Park, G.H. ; Jung, I.H. ; Kim, K.J. ; Lee, J.U.
Author_Institution :
Dept. of Electr. Eng., Kwangwoon Univ., Seoul, South Korea
Abstract :
The electrical degradation phenomena of epoxy composites to be used as a molding material for transformers were studied. The electrets were first manufactured by applying high voltages to five kinds of specimens given a mixing rate, and then TSC (Thermally Stimulated Current) values at the temperature range of -16 0-200[°C] were measured from a series of experiments. The behavior of carrier and its origin in epoxy composites were examined, respectively, and various effects of electrical degradation on epoxy composites were also discussed in this study
Keywords :
composite insulating materials; electrets; epoxy insulation; insulation testing; life testing; power transformer insulation; power transformer testing; thermally stimulated currents; -16 to 200 degC; electrets; electrical degradation phenomena; epoxy composites; mixing rate; molding material; thermally stimulated currents; transformers; Composite materials; Current measurement; Dielectrics and electrical insulation; Electrets; Manufacturing; Power system reliability; Temperature distribution; Thermal degradation; Thermal stresses; Transformers;
Conference_Titel :
Properties and Applications of Dielectric Materials, 1997., Proceedings of the 5th International Conference on
Conference_Location :
Seoul
Print_ISBN :
0-7803-2651-2
DOI :
10.1109/ICPADM.1997.616564
