On the AC breakdown mechanism of the laminated oil-impregnated PPLP

Author

Saitoh, Kazuo ; Kawakami, Yohji ; Murata, Masao

Author_Institution

Nagaoka Univ. of Technol., Niigata, Japan

fYear

1992

Firstpage

236

Lastpage

241

Abstract

The AC breakdown mechanism of oil-impregnated PPLP (polypropylene laminated paper) was investigated. According to the experimental results, AC breakdown strength is not influenced by the insertion place of PP (polypropylene). This situation is considerably different from that of the impulse breakdown mechanism. In the case of applied AC voltage, the authors investigated the effects of Kraft paper and PP on the AC breakdown mechanism of oil-impregnated PPLP, by observing partial discharge current waveforms occurring in the specimens. In this experiment, oil-pressure is 0 kg/mm² at gauge in order to exactly observe discharge current waveforms

Keywords

composite insulating materials; electric breakdown of solids; electric strength; insulating oils; insulation testing; laminates; paper; partial discharges; polymer films; AC breakdown mechanism; Kraft paper; breakdown strength; laminated oil-impregnated PPLP; partial discharge current waveforms; polypropylene laminated paper; Breakdown voltage; Current measurement; Disk recording; Electric breakdown; Electrodes; Paper technology; Partial discharge measurement; Partial discharges; Resins; Stochastic processes;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation and Dielectric Phenomena, 1992. Annual Report. Conference on

Conference_Location

Victoria, BC

Print_ISBN

0-7803-0565-5

Type

conf

DOI

10.1109/CEIDP.1992.283182

Filename

283182