Experiences Of VLF Tan Delta Test On MV Cables In MEA Underground Project Area

This paper presents the experiences of VLF Tangent Delta test carried out in MEA. The existing cable system which is subjected to be extended to accommodate the Overhead to Underground conversion project in Bangkok needs to be verified its health before connecting to the new cables. Several test cases have confirmed that the VLF Tan Delta test is an appropriate technique to identify the poor cables.