为什么总在打雷后开关会跳闸?

2025-03-16 01:47:01
推荐回答(2个)
回答1:

一打雷就跳闸,不是因为开关额定电流小,而是因为打雷产生的感应电导致开关跳闸。打雷会引起周围空间电场和磁场剧烈变化,剧烈变化的电场和磁场会在金属物体(电线)上感应出电压,过高的电压或者电流会导致开关跳闸或者电器损坏。

如果你房子比较低、离雷电远,那遭受雷击的概率会很低,打雷的时候线路几乎不受影响。但是如果住在高层或者房子地势比较高,那就容易遭受到雷击。

防雷措施

建筑物顶部应该装有接闪网、接闪带、接闪杆等作为外部防雷装置,然后通过专用引下线和大地连接。另外为了防止引下线接地点附近产生跨步电压触电,引下线及接地装置距离建筑物出入口及人行道边沿最少3米以上。

建筑物还需要做等电位连接,它的主要作用是屏蔽雷电产生的电场和磁场,防止雷电在建筑物内部产生感应电压。

回答2:

漏电开关的跳闸与雷电有关系。
闪电时,瞬间强电流通过输电电缆、通信线缆和金属管道等引入室内,轻微时漏电开关跳闸,家用电器自带的保护装置断电,起到用电安全的作用;严重时造成雷击事故损害家用电器。
你家的漏电开关总是每次在打雷前一秒钟跳闸,而邻居家的却不会。
1.
有可能与你家的电线,电缆和金属管道的走向和布线有关,容易感应到雷电。
2.
有可能与你家漏电开关的灵敏度有关,一旦有雷电感应就跳闸。换其他品牌的漏电开关试试。

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