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为什么雨天电话容易串音?

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为什么雨天电话容易串音?

夏天或梅雨季节,电话串音现象特别多,有时电话声音还会变小或变大。chu现这些现象是因为电话线chu了故障。电话信号在传输过程中,要经过许多岔dao和接tou,线路越长,岔dao口接tou越多。如果这些岔daochu1的接tou没有进行很好的封接和绝缘chu1理,电liu就会xie漏chu去,这zhong现象就叫"漏电现象"。在雨天,周围空气chaoshi电缆内的棉纱、接口chu1的绝缘胶带受chao发霉,使得绝缘xing能降低,严重时绝缘胶带不能隔绝导线间的电liu,造成漏电。用hu通话时,有一bu分电liu就会窜入其他线路,造成串音。另外,地下电缆也会受到雨水chao气的影响,发生漏电,而架空电缆缠绕上风筝、鸟巢后,也会使绝缘层破损,造成串音现象。

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