| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a small-sized lightweight current sensor having superior water resistance, capable of reducing cost by forming a sectional area of each magnetic core to be small, concerning a current sensor for detecting a current in a wire to be measured by enclosing a part of a circumferential surface of the wire to be measured, by bonding circularly divided magnetic cores. <P>SOLUTION: The current sensor 1 includes a pair of magnetic cores 6, 7 formed into a semi-circular shape; a coil 15 wound on at least either of the magnetic cores; and a pair of casings 4, 5 for storing the magnetic cores respectively. In the current sensor, a current in the wire to be measured is detected by the coil, by circularly bonding the pair of the magnetic cores, and by enclosing the part of the circumferential surface of the wire 60 to be measured by the semi-circular magnetic cores. The magnetic cores include body parts 6a, 7a, including a silicon steel product formed into a semi-circular shape, and planar bonding parts 6b, 7b including a ferrite material provided, respectively on both ends of the semi-circular body parts. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
