Influence of Exterior Corona on Discharge Voltage of Small Gap in SF6 Gas under Pulse Voltage.

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  • Kamatani Humihiro
    Department of Electrical Engineering, Faculty of Engineering, Himeji Institute of Technology, Himeji 671–22, Japan
  • Watabe Katunori
    Department of Electrical Engineering, Faculty of Engineering, Himeji Institute of Technology, Himeji 671–22, Japan
  • Onoda Mitsuyoshi
    Department of Electrical Engineering, Faculty of Engineering, Himeji Institute of Technology, Himeji 671–22, Japan
  • Nakayama Hiroshi
    Department of Electrical Engineering, Faculty of Engineering, Himeji Institute of Technology, Himeji 671–22, Japan

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  • Influence of Exterior Corona on Dischar
  • Influence of Exterior Corona on Discharge Voltage of Small Gap in SF<sub>6</sub> Gas under Pulse Voltage

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Abstract

The effect of a corona initiated from a needle electrode, which is located near a sphere electrode keeping apart from a plane electrode, on the discharge voltage of the sphere-plane gap under pulse voltages in SF6 gas was investigated . The condition of corona initiation and development depended on the resistance which was connected to the high voltage. With increase in the resistance, the discharge voltage increased considerably and reached a maximum at about 5 M Ω for a pulse rise time of 0.5 µ s.

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