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油浸紙絕緣電力電纜

確認紙絕緣電纜端部是否受潮的方法

發布日期：2022-04-18 點擊率：99

紙絕緣電纜易受潮的部位大多在其端部，受潮的電纜投入運行后易造成擊穿故障。故在敷設電纜或制作接頭時，均應對紙絕緣電纜端部的絕緣情況進行檢查，確認其是否受潮，一旦發現受潮，應及時將其切去，直至合格為止。確認紙絕緣電纜端部是否受潮的方法常見有以下兩種：

    (1)電纜油試驗法?？蓪㈦娎|芯松開使絕緣紙處于自然狀態，將電纜端部浸入150～160℃的電纜油或變壓器油與松香的混合液中，如液體中發出“嗶啪”的爆破聲，就說明絕緣受潮，可切去一段再采用同樣方法試驗。

    (2)火燒法。用清潔干燥的工具剝開鉛包，撕下幾條絕緣紙，用火柴將其點燃，如發出“嘶嘶”聲且出現白色泡沫，則就說明該電纜受潮。

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