| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a split-type current transformer which adjusts the magnetic resistance of a divided portion structurally to target a remaining current. <P>SOLUTION: The split-type current transformer has magnetic core portions 13, 43 closed through an engaging portion 23 wherein irregularity portions 15, 45 including intergdigital protruding pieces 17, 47 provided in one end portion 13a and in the other end 43a are engaged to each other. Furthermore, the split-type current transformer has magnetic sensors 12, 42 comprising coil bodies 25, 51, wherein windings are provided in respective bobbin portions 26, 52 covered by the respective magnetic core portions 13, 43. The under-side magnetic core portion 13 determines the position of the intergdigital protruding piece 17 extended from a magnetically transparent metal portion 14 in one most external side 26a and the other most external side in a closing time of the magnetic core portions. The intergdigital protruding piece 17 of the most-external side 26a of the magnetic core portion 13 and the other-side intergdigital protruding piece expand a gap generated to the intergdigital-form protruding piece 47, which adjoins the upper-side magnetic core portion 43 in the closing time via a gap adjusting means 34 provided in the bobbin portion 26; and further, the expanded position of the gap is provided so as to make the fastening of the expanded position of the gap possible. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
