| 摘要 |
<p>PURPOSE:To prevent the disturbance of external noise by setting a cylindrical conductive member fitted with a bottom, wherein an antenna constituting slot in the direction crossing the conductor inside a vessel at right angles, in the opening of the vessel of a gas insulation equipment. CONSTITUTION:A cylindrical conductive member 6 fitted with a bottom is set in the tubular part 4 of the opening 3 formed in the duct vessel 1 into which gas for insulation is changed. The cylindrical member 6 fitted with a bottom 6 is equipped with an antenna constituting slot 7 in the direction crossing the high voltage conductor 2 inside the duct vessel 1, and therein projections 8 and 8 are formed in the vicinity of the center on both sides of the slot 7, and the top of a coaxial cable 9 is connected as a power supply point to the antenna. The bottom of the cylindrical member 6 fitted with a bottom is covered with a cover 10 made of conductive member, and the coaxial cable 9 is led out to the outside through the coaxial sealed terminal base 12 provided in the cover 10, and the lead wire 13 connected to the cylindrical member 6 fitted with a bottom is led out to the outside through the sealed terminal base 14 of the cover 10. Hereby, electromagnetic waves generated by the corona discharge due to inferior insulation of the duct 1 can be monitored accurately without being obstructed by external noise.</p> |
