Repeatability study for a DC conductivity measurement setup using different types of XLPE

Conductivity measurements are important within the area of insulating material characterization especially for HVDC transmission application. Within first investigations a derived novel test setup showed promising results regarding overall reproducibility with regard to the test specimen production and test configurations. Based on these first results, the setup is subjected to further enhancements and used for a repeatability study focusing on measurement repeatability and robustness. With a detailed knowledge about the repeatability of obtained results any impact to the test specimen production and preparation can be determined. After a brief description of the experimantal setup a repeatability study in which two different test specimens are measured repetitively a deviation analysis is carried out. Furthermore as used materials are commercially available XLPE for AC and DC application a comparison of these materials is done whilst results are presented and discussed.