電纜上既波仔有乜用??
回答 (2)
2007-09-23 8:59 pm
✔ 最佳答案
係高架高壓電纜上最高既防雷線上既波仔係訊號波，可能果度經常有飛機經過，或者果度係航綫，佢會反光比飛機師知道果度有高架高壓電纜，最新既高架電纜塔有安裝閃光燈，仲係用太陽能電源既，因爲高架高壓電纜有時會無電壓狀態既。
2007-09-23 6:51 pm
Function:Overhead line's earth.. The line is earthing. To provide the lightning path to ground.
Base on the line/ wire is appeared on sky.. The flight is trouble to observe.. Therefore, the ball is provided for flight operator to clear understand ..that is electricity overhead line.. "Precaution"..The ball is 50% red, 50% white.color. e.g. at kam tin..etc.
Inside the steel wire..the hardware signal cable inside for communication of auto protection trip operation.
Base on the line/ wire is appeared on sky.. The flight is trouble to observe.. Therefore, the ball is provided for flight operator to clear understand ..that is electricity overhead line.. "Precaution"..The ball is 50% red, 50% white.color. e.g. at kam tin..etc.
Inside the steel wire..the hardware signal cable inside for communication of auto protection trip operation.
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https://hk.answers.yahoo.com/question/index?qid=20070923000051KK00958