交流き電回路における続流抑止型電力用保安器の開発

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タイトル別名
  • Development of New Type Gap Arrester for Earth Fault Protection in AC Feeding System
  • コウリュウキデンカイロ ニ オケル ゾク リュウ ヨクシガタ デンリョクヨウ ホアンキ ノ カイハツ

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A gap arrester is being used for ground fault protection in AC Feeding System. However there are faults in which a conventional gap arrester burns down in a normal state of circuit. We investigated the cause of the fault in which a gap arrester burns. Then, it was found out that the cause of the fault was the discharge of AC current from the surge voltage. Therefore, we developed a new type gap arrester which does not burn down. The new type gap arrester is composed of a discharge tube and a zinc oxide element which are connected in series. Unnecessary AC current discharge is prevented by this structure. The new type gap arrester is actually used at the railroad track.

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