Title :
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
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;
Conference_Titel :
Electrical Insulation and Dielectric Phenomena, 1992. Annual Report. Conference on
Conference_Location :
Victoria, BC
Print_ISBN :
0-7803-0565-5
DOI :
10.1109/CEIDP.1992.283182
