| 摘要 |
PURPOSE: An underground power line protective case is provided to prevent approaching a rat to a transformer by generating a hatred sound through a sound plate. CONSTITUTION: A protective case body(5) is installed on the ground. A transformer(2) is arranged inside of the protective case body. A connecting member electrically connects the transformer and a underground power line(4). An alarm tool(200) is arranged inside of the protective case body. The alarm tool includes a sound plate, a piston and a spring. The piston has an acute portion and a fixing unit. The acute portion scratches the sound plate to occur a hatred sound. The fixing unit is fixed to the underground power line. A display band is attached to the underground power line. |
