Investigation on insulating resistance performances of ZnO elements in the oil

Author

Wen, Yonggang ; Liang, Yun ; Zhao, Yiwen

Author_Institution

Dept. of Electr. Eng., Huazhong Univ. of Sci. & Tech., Wuhan

fYear

1988

fDate

12-16 Sep 1988

Firstpage

202

Abstract

A study is made of insulating resistance-time performance of ZnO elements in oil under a long-duration power frequency voltage by accelerating both voltage and temperature. It has been found that not only electric field and temperature, but also the oil permeability, oil, film, and oil quality have an effect on the insulating resistance performance of ZnO elements. A method for estimating limit values of the lifetime of ZnO elements is presented. Their useful lifetime values at working temperature and applied voltage ratio have been determined. A reliable method is presented for selecting kinds of ZnO elements before testing their insulating resistance-time performance in the oil

Keywords

composite insulating materials; insulating oils; insulation testing; life testing; zinc compounds; ZnO elements; accelerated testing; applied voltage ratio; electric field; insulating resistance-time performance; lifetime; long-duration power frequency voltage; oil; permeability; Acceleration; Dielectrics and electrical insulation; Electric resistance; Frequency; Oil insulation; Permeability; Petroleum; Temperature; Voltage; Zinc oxide;

fLanguage

English

Publisher

ieee

Conference_Titel

Properties and Applications of Dielectric Materials, 1988. Proceedings., Second International Conference on Properties and Applications of

Conference_Location

Beijing

Type

conf

DOI

10.1109/ICPADM.1988.38369

Filename

38369