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For a raise of the miniaturization and reliability of various electric power apparatuses, it is important to clarify the partial discharge characteristic in their insulation part. In many case, partial discharge may occur under the non-uniform field. So, it is necessary to understand the partial discharge characteristic under non-uniform electric filed. Partial discharge inception voltage (PDIV) was...
The partial discharge (PD) generated by the surge voltage is an issue in inverter-fed motor for the reliability of the electrical insulation. The measurement of PD waveform with a wide frequency range is one way to investigate the PD phenomenon. The PD waveform with a wide frequency range may imply information such as mechanisms beginning from initiation of avalanche and its propagation. Authors have...
To understand treeing phenomena in MgO/LDPE nanocomposite under ac voltage application, treeing breakdown properties and partial discharge inception voltage were investigated. Tree inception voltage increased with increasing filler content. Time to bridge counter electrode, time to breakdown and time-lag to breakdown also increased with addition of MgO nano-filler to LDPE. From these results, it becomes...
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