| 摘要 |
PURPOSE:To detect a reduction in degree of vacuum of a vacuum interrupter in a position separated from the vacuum interrupter by leading a discharge light generated at the time of reducing the degree of vacuum of the vacuum interrupter received in a gas insulating equipment to the outside of the equipment by means of a fluorescent resin material and a linear fluorescent resin member. CONSTITUTION:When a discharge is generated in a vessel, the discharge light is released from the cut of the shield of the vacuum vessel to the inside of an earthing tank 1. This released light is detected by cylindrical fluorescent resin members 18, 18 and converted into a fluorescent light, which is transmitted to linear fluorescent resin members 19, 19, injected to optical fibers 20, 20, and further supplied to the terminal A of a detector 21. On obtaining the received light, the detector 21 sends a signal to a break instruction part 22. Hence, even when the discharge light is detected by the fluorescent resin member and the resulting light is converted into the fluorescent light and inputted into the optical fiber, no attenuation is caused in the optical fiber, and the reduction in degree of vacuum can certainly be detected. |
