LIGHTNING ARRESTOR

• Main Authors: INAZAKI KOJI, SHIOZAKI MITSUNOBU
• Format: Patent
• Language: English; Japanese
• Published: 28.03.2023
• Subjects: BASIC ELECTRIC ELEMENTS; CORONA DEVICES; ELECTRICITY; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARK GAPS; SPARKING PLUGS

To accurately detect operation of a lightning arrestor while attaining structure simplification and cost reduction of the lightning arrestor.SOLUTION: A lightning arrestor 1 comprises: a surge current path 2 in which a surge current flows; an operation detection unit 3 for operating that the lightning arrestor 1 is operated by the surge current flowing in the surge current path 2; and a housing 4 in which the surge current path 2 and the operation detection unit 3 are stored. The operation detection unit 3 includes: a coil 31 in which a secondary voltage is generated by the surge current flowing in the surge current path 2; a comparator 33 which outputs a detection signal in a case where the secondary voltage exceeds a threshold; a flip-flop 34 which holds output of a lighting signal when the detection signal is inputted; and an operation lamp 35 which is lighted while the output of the lighting signal is held.SELECTED DRAWING: Figure 1 【課題】避雷器の構造の簡略化及び低コスト化を図りつつ、避雷器の動作を正確に検知する。【解決手段】避雷器１は、サージ電流が流れるサージ電流経路２と、サージ電流経路２に流れるサージ電流によって避雷器１が動作したことを検知する動作検知部３と、サージ電流経路２及び動作検知部３を収容する筐体４と、を備える。動作検知部３は、サージ電流経路２に流れるサージ電流により二次電圧を生成するコイル３１と、二次電圧が閾値を超えた場合に検知信号を出力するコンパレータ３３と、検知信号が入力されると点灯信号の出力を保持するフリップフロップ３４と、点灯信号の出力が保持されている間、点灯する動作ランプ３５と、を備える。【選択図】図１