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Journal of the Korean Institute of Illuminating and Electrical Installation Engineers

ISO Journal TitleJ Korean Inst. IIIum. Electr. Install. Eng.
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Title The Propagation Characteristics of Electromagnetic Wave Radiated at Gap in Air and Insulator
Authors C. N. Kim ; H. D. Lee ; K. S. Park ; W. Z. Park ; K. S. Lee ; D. I. Lee
Page pp.104-111
ISSN 1225-1135
Abstract In this paper, VHF( 30～230 [MHz] ) electromagnetic waves radiated from partial discharge( PD ) at two-type electrodes in air are measured and the peculiar patterns of their spectra are reported. Also, the polarization and distance characteristics of electromagnetic wave radiated by PD, were investigated. In case of the epoxy insulator inserted, the noise level of radiated electromagnetic waves is 0.6～6.2 [dB] higher than the case in air below 90 [MHz]. The frequncy spectrum distribution of radiated electromagnetic waves appears to be different in the whole frequency range according to the arrangment of antenna.