NDLI: Leakage current monitoring and outdoor degradation of silicone rubber

Content Provider	IEEE Xplore Digital Library
Author	Jeong-Ho Kim Woo-Chang Song Jae-Hyung Lee Yong-Kwan Park Han-Goo Cho Yeong-Sik Yoo Kea-Joon Yang
Copyright Year	1994
Abstract	The degradation process of silicone rubber was investigated by leakage current monitoring in the inclined-plane method. A data acquisition system (DAS) with 12-bit, 8-channel analog/ digital (AD) converter was prepared. The maximum erosion depth was measured for use as the degradation indicator. The result suggests that the discharge duration and current waveform are well corresponding with the degradation process. And fast Fourier transform (FFT) analysis from the stored waveform shows that the harmonic ratio I3/I1 corresponds with the initial surface transition from hydrophobic to hydrophilic, and with further progressive degradation. In addition, it may be possible to use cumulative charge and peak pulses as quantitative indicators of failure. Furthermore, the contact angle was adopted for assessing surface degradation. These results indicate that the surfaces are divided into top and bottom areas depending on the degree of exposure to dry band arcing. It seems that the bottom area subjected to most of the dry band arcing contains very short chains of silicone rubber as well as alumina trihydrate fillers, while the top area shows the loss of filler particles.
Sponsorship	National Natural Science Foundation of China (NSFC) Region Centre Ville de Tours Conseil General D'Indre et Loire ABB IEEE Sandia National Laboratories TOSHIBA
Starting Page	1108
Ending Page	1115
Page Count	8
File Size	873832
File Format	PDF
ISSN	10709878
Volume Number	8
Issue Number	6
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2001-12-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Leakage current Monitoring Degradation Rubber Arc discharges Data acquisition Analog-digital conversion Fast Fourier transforms Harmonic analysis Surface waves
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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