To provide a railroad vehicle that facilitates measurement of insulation resistance of an electric circuit.SOLUTION: In a non-energized time when a pantograph 17 is lowered so that supply of electric power to a power source wire 18 is cut off, an electromagnetic switch 44a opens, so that connection of electric motors 22 to a grounding wire 40 through an electric wire 24 for electric motors is disconnected. In this state, a contact-type monitoring device 70b applies a voltage to a space between the electric wire 24 for electric motors connected to the electric motors 22 and the grounding wire 40 to measure insulation resistance of the electric wire 24 for the electric motors. Thus, mounting the contact-type monitoring device 70b on a railroad vehicle 10 can make measurement of insulation resistance of the electric wire 24 for electric motors easier than conventional methods for measuring insulation resistance.SELECTED DRAWING: Figure 2
【課題】電気回路の絶縁抵抗の計測を容易にできる鉄道車両を提供すること。【解決手段】パンタグラフ17を下降して電源線18への電力の供給が遮断された非通電時には、電磁開閉器44aが開き、電動機用電線24を介した電動機22と接地線40との接続が切れる。この状態で、接触式監視装置70bは、電動機22に接続されている電動機用電線24と接地線40との間に電圧を印加して、その電動機用電線24の絶縁抵抗を計測する。このように、鉄道車両10に接触式監視装置70bを搭載することによって、従来の絶縁抵抗の計測方法と比べ電動機用電線24の絶縁抵抗の計測を容易にできる。【選択図】図2
RAILROAD VEHICLE
鉄道車両
2023-03-13
Patent
Electronic Resource
Japanese
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