| 摘要 |
PROBLEM TO BE SOLVED: To suppress changes of gap dimensions, and to stabilize detection accuracy of a measured current.SOLUTION: A current sensor includes: an annular magnetic core 8 provided with a gap portion 7; a magnetoelectric transducer 9 disposed in the gap portion 7; and a case 10 provided with a through-hole 11 penetrated by a conductor through which a measured current passes, storing the annular magnetic core 8, and holding the magnetoelectric transducer 9. End portion resin coatings 15 are provided on outer peripheral sides and inner peripheral sides of both end portions 14 of the annular magnetic core 8 opposing to each other through the gap portion 7. Inner groove portions 16 and outer groove portions 17 are respectively formed on the inner peripheral sides and the outer peripheral sides in both end resin coatings 15, in an axial direction of the annular magnetic core 8. Projecting portions provided in the case 10, and the inner groove portions 16 and the outer groove portions 17 are fitted with each other. |
