SENSOR UNIT

To enable measuring a current flowing through an electric wire in a non-contact manner with high accuracy in a sensor unit.SOLUTION: A sensor unit 1 comprises: a housing 2 having a first housing 10 and a second housing 20 which are mutually rotatable via a hinge portion 3; measuring means 5 that is accommodated inside the housing 2 and performs measurement related to an energized state of an electric wire 90 at an arrangement position P when the housing 2 is in a closed state; and an accommodation portion 14 that is provided on at least one of the first housing 10 and the second housing 20 and that is a recess configured to be able to accommodate the electric wire 90 arranged at the arrangement position P. The measuring means 5 has a Rogowskii coil 45 arranged so as to form an annular shape surrounding the electric wire 90 at the arrangement position P when the housing 2 is in the closed state and is configured to perform the measurement related to a current of the electric wire 90. The sensor unit can measure the current flowing through the electric wire in a non-contact manner with high accuracy using the Rogowskii coil.SELECTED DRAWING: Figure 1 【課題】センサユニットにおいて、電線を流れる電流を非接触で高精度に計測できるようにすることが求められている。【解決手段】センサユニット１は、ヒンジ部３を介して互いに回転可能な第一筐体１０及び第二筐体２０を有する筐体２と、筐体２の内側に収容されており、筐体２が閉状態である場合において配置位置Ｐにある電線９０の通電状態に関する計測を行う計測手段５と、第一筐体１０と第二筐体２０との少なくとも一方に設けられており、配置位置Ｐに配置される電線９０を収容可能に構成された凹部である収容部１４とを備える。計測手段５は、筐体２が閉状態である場合において配置位置Ｐにある電線９０を囲む環状をなすように配置されたロゴスキーコイル４５を有し、電線９０の電流に関する計測を行うように構成されている。ロゴスキーコイルを用いて、電線を流れる電流を非接触で高精度に計測できる。【選択図】図１