| 摘要 |
A partial discharge sensor includes: a first ground 1 that constitutes a closed space 3 to surround a high-voltage wire 2; and a cylindrical branch pipe 4 disposed at the first ground 1 to protrude to an outer space to house with a lid 8 a first metal container 6 having at least one hole through which gas can pass, and having a slit 12 formed on the side to the space 3; at one end of a coaxial wire 7 disposed in the container 6, an outer conductor 9 of the coaxial wire 7 is connected to the first metal container 6 at a portion near the center of the slit 12, and an inner conductor 10 of the coaxial wire 7 is connected to the first metal container 6 at an opposite portion to a position where the outer conductor 9 is connected across the slit 12. |
