Accelerated aging test and life expectancy of reduced-wall high-stress MV TRXLPE cables

Accelerated aging test based on the AEIC CS8 AWTT (Accelerated Water Treeing Test) protocol was carried out on both standard and reduced-wall high-stress MV TRXLPE cables with different insulation thicknesses. Results were compared with existing data for cables with different insulation types. Furthermore, a comprehensive statistical analysis based upon the maximum likelihood method was applied to reveal the life expectancy of reduced-wall high-stress TRXLPE cables as compared to the standard wall cable. This comparison was also made with previous ACLT (Accelerated Cable Life Test) results.