Cables are the most widely used asset across HV networks, and so cable failures can result in downtime and disruption across your entire network.
Some of the most common causes of issues within HV cable insulation include sharp protrusions within the insulation or semiconducting layers, voids/gaps between layers of insulation, and moisture ingress. Such issues can be caused by poor manufacturing quality, bad workmanship during the installation process and third-party damage to the cable. This can lead to electrical treeing in the insulation – characterised by the progressive breakdown of the insulating material due to HV stress, localised heating due to current leakage and imperfections, and surface tracking, which involves the progressive degradation of insulation surfaces under prolonged energisation, especially in the presence of a contaminant.
At Monitra, we have a range of testing and monitoring solutions that can help to detect the development of underlying defects and assess the insulation condition of HV cables, increasing safety and avoiding unplanned outages.
To discover our asset management capabilities for cables, contact us today via our online form.
Utilising the Kronos Spot Tester, our team of test engineers can perform a range of testing solutions to assess the condition of your vital assets.
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For further insight into how Monitra can help you keep tabs on the insulation condition of your critical cables, take a look at our library of case studies below.