Cable Injection Technology

This paper provides an overview of cable injection technology based on the phenylmethyldimethoxysilane (PMUMS) material in commercial use since 1987. It focuses specifically on process chemistry and how that chemistry interferes with the mechanisms of water tree growth, it summarizes some previously published laboratory results that demonstrate the effectiveness of cable injection technology at extending the life of aging solid dielectric power cables. Additionally, it documents previously unavailable real world, long-term field data, which is now available due to the maturation of cable injection technology using PMDMS-based material. Knowledge of real-world performance correlates with a steep, industry-wide increase in annual injection footage, showing how real-world results have increased industry confidence in cable injection technology based on time-tested materials