| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To improve a high-frequency noise resistance amount by applying simple processings on a metal chassis installing a Hall CT and reducing the coupling capacity between the Hall CT/chassis in the Hall CT for detecting the main circuit current of an electric power conversion part. <P>SOLUTION: The Hall CT for detecting the main circuit current, provided to the inverter part of an electric conversion device mounts a package 8b of the Hall CT 8 on the metal chassis 11 (frame ground), has a package 8b of the Hall CT 8 mounted on the end face of a burring processing part 11a, to secure a gap d after applying burring processing cylindrically protruded at a Hall CT mounting position of the chassis in a power source supplying electric power to the Hall CT, by connecting a drive power source to both the ends of a capacitor of an inverter input part, and reduces the coupling capacity (stray capacity) between both. In addition, a screw groove is formed on the inner face of the cylinder part of the burring processing part 11a and screwed on the chassis through a tightening screw 12 on the mounted seat 8b-1 of the package of the Hall CT. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
