METHOD AND SENSOR FOR PREVENTING ERRONEOUS DISCONNECTION OF LIVE LINE

To provide a method and a sensor for preventing erroneous disconnection of a live line, capable of preventing erroneous disconnection of the live line when disconnecting an electric wire.SOLUTION: A method for preventing erroneous disconnection of a live line includes measuring a voltage induced in...

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Hauptverfasser: SAWADA MASAKATSU, NODA RYUZO, MATSUO KAZUAKI, OURA YOJI, TANAKA MASAHIDE
Format: Patent
Sprache:eng ; jpn
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Beschreibung
Zusammenfassung:To provide a method and a sensor for preventing erroneous disconnection of a live line, capable of preventing erroneous disconnection of the live line when disconnecting an electric wire.SOLUTION: A method for preventing erroneous disconnection of a live line includes measuring a voltage induced in a human body H by approach of the live line with a first electrode 1 of a detection circuit 4, measuring a voltage to the ground with a second electrode 2 of the same circuit, and capturing a current flowing due to a difference between the potential of the first electrode 1 and the potential of the second electrode 2 with the detection circuit 4 to output a signal from the detection circuit 4 when the human body H isolated from the ground has approached the live line.SELECTED DRAWING: Figure 3 【課題】電線を切断する際に、誤って活線を切断してしまうことを防止することができる活線の誤切断防止方法及び活線の誤切断防止センサを提供することを目的とする。【解決手段】活線の誤切断を防止する方法において、検出回路4の第1電極1で活線の接近によって人体Hに誘起された電圧を測定し、同回路の第2電極2で大地に対する電圧を測定し、これらの第1電極1の電位と第2電極2の電位の差により流れる電流を検出回路4で捉えて、大地から絶縁された人体Hが前記活線に接近した際検出回路4から信号を出力する構成とした。【選択図】図3