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什么是屏蔽電纜?屏蔽電纜的作用是什么?

來源:www.vanjashop.com         發布時間:2019-08-08 返回列表
    什么是屏蔽電纜?屏蔽電纜的作用是什么?古人云“知己知彼百戰不殆”購買電線電纜也是一樣的,只有深入了解那種電線電纜適合自己才能避免買到不適合自己使用的電線電纜,下面跟隨永升線纜的腳步一起了解吧!

    綜合布線外護套與芯線之間有屏蔽層阻隔的線纜稱為屏蔽線纜,屏蔽層(單層或雙層)主要由銅、鋁等非磁性金屬材料制成,其厚度遠小于其趨膚深度。目前,使用比較廣泛的是屏蔽雙絞線,它兼顧雙絞線的平衡性和屏蔽層的屏蔽性,在四對雙絞線的外面加裝一層或兩層鋁箔,利用屏蔽層對電磁波的反射、吸收和趨膚效應的原理,結合雙絞線平衡抵消串擾的傳輸性能,可以有效防止外部電磁干擾進入線纜,同時能夠阻止內部信號外泄。


屏蔽電纜


    所謂趨膚效應是指導體中有電流通過時將在其周圍產生磁場,磁場又將在導體中產生感應電流,感應電流會在導體截面上隨頻率的升高而趨于導體表面分布,頻率越高,趨膚深度越小,即頻率越高,電磁波的穿透能力越弱。
    以上關于屏蔽電纜作用相關的知識是由西藏電線電纜廠家——永升線纜提供的,永升線纜主要生產銷售電線電纜、電力電纜、防火電纜、控制電纜、bv電線、高壓電纜、消防電纜、屏蔽電纜、鎧裝電纜、鋁合金電纜,需要訂購電線電纜就找我們。

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