154kV EPR tape molded joint (RMJ) for 154kV XLPE cables

摘要

In recent years, electrical performances of XLPE cables have been improved, however, increasing demands for power and over crowded in urban and suburban underground facilities require further improvements to increase currently transmissioncapacities and minimize dimensions. We are investigating the applications of 154kV XLPE cables with reduced insulation thickness to existing ducts which are already installed. These applications require the development of smaller joints that can beinstalled in man holes for OF cables Therefore we are developing ethylene-propylene rubber tape type molded joint (RMJ) methods to improve conventional joint technologies. This paper reports on the relationships between the interface properties ofEPR/XLPE and the electrical performances of RMJ.