What are the main differences in outages and repairs for underground power cables?

Once installed in the ground, cables are intrinsically maintenance free. Since their introduction, EHV XLPE cables have had an excellent track record. It is only external influences that could damage the cable, and remote monitoring of the cable circuit allows the rapid location of the fault, so that a targeted intervention can be conducted. Remote monitoring of the cable circuit also means there is no specific need for a permanently staffed route surveillance team.

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