Development of a Measurement System for Off-line Diagnosis of MV Cables

In the past years a long-lasting aging experiment on PILC-cableswith a nominal voltage of 20 kV has been carried out. In order to verify the results and to make those data utilizable for the asset management, a new project with the focus on field measurements has been started. Thus, a diagnostic system appropriate for field measurements, a cable test van, has been designed comprising both a 50 Hz and 0.1 Hz voltage source. For the recording of the measurement values, a mobile measurement unit and a voltage divider have been developed. Starting with a short description of the aging experiment and an overview of the relevant results, the design of the diagnostic system for off-line measurements of medium voltage cables as will be described in the paper. As field measurements have been started in 2015, first results will be presented and discussed.