Abstract
This paper covers the findings in three areas of research: cable protection, circuit breakers, and high-voltage cable couplers. Laboratory and analytical studies have been conducted in the three areas to determine proper circuit-breaker settings, cable sizes, and coupler performance. Also, an extensive field-monitoring program was established to relate in-mine experience to laboratory findings. Further, various pieces of equipment were designed for laboratory testing, particularly in the area of cable reeling and unreeling.
