电力电缆相比架空线具有以下4个优点：
(1)运行可靠，由于安装在地下等隐蔽处，受外力破坏小，发生故障的机会较少，供电安全，不会给人身造成危害；
(2)维护工作量小，不需频繁的巡检；
(3)不需架设杆塔；
(4)有助于提高功率因数。
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