| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a new improved electric current sensor used for sensing an electric current flowing through a conductor. SOLUTION: An electric current sensor 40 used for sensing an electric current inside a conductor 22 comprises a magnetic flux concentrator 42 and a magnetic flux sensor 20, and the magnetic concentrator 42 is provided with a main parts 50, 52 formed of magnetic material and an intermediate part 54 made of non- magnetic material and arranged between the main parts 50, 52. The main parts 50, 52 and the intermediate part 54 cooperate with each other so as to form an aperture 88 partially at least for passing a part of the conductor 22 through the aperture 88.</p> |
