CURRENT MEASURING DEVICE

PROBLEM TO BE SOLVED: To provide a current measuring device for accurately measuring a common mode current flowing through a wide conductor by a simple method.SOLUTION: A measurement probe 3 detects, as inductive voltage, a magnetic flux 30 generated by a current 20 flowing through a conductor 2 to be measured using a cylindrical loop antenna. The length of the measurement probe 3 is set substantially equal to the width of the conductor 2 to be measured. A slit 4 is formed in the longitudinal direction at a side surface position of the measurement probe 3, and a feeding point 5 for detecting the inductive voltage from the loop antenna is disposed at a substantially center position of the slit in the longitudinal direction. The inductive voltage detected by the measurement probe 3 is transmitted to signal processing sections 8, 9, and 10 via the feeding point 5, and is converted into a current value. 【課題】幅広な導体を流れるコモンモード電流を簡便な方法でより正確に測定する電流測定装置を提供すること。【解決手段】測定プローブ３は、被測定導体２を流れる電流２０により発生する磁束３０を筒状のループアンテナにより誘起電圧として検出する。測定プローブ３の長さは被測定導体２の幅に略等しくする。測定プローブ３の側面位置には長手方向にスリット４を形成し、スリットの長手方向の略中央位置には、ループアンテナからの誘起電圧を検出する給電点５を設ける。測定プローブ３にて検出した誘起電圧は給電点５を介して信号処理部８，９，１０に伝送され、電流値に換算される。【選択図】図１