Performance of Micro-Varistor Stress Grading in Cable Terminations Subjected to Repetitive Fast Transients

In this study, a commercial cable termination that employs micro-varistor stress grading is subjected to repetitive impulse voltages, to assess the associated temperature rise. Additionally, a COMSOL® model is developed to further investigate the effectiveness of micro-varistor stress grading on the electric field distribution. The measured and simulated results provide confirmation of the effectiveness of the micro-varistor stress grading cable termination when exposed to repetitive impulse voltages.