Among the different possible constructions, slip-on technology has grown to become the world standard to connect extruded high voltage cables. One of the reasons for this is that use of pre-fabricated, routine-tested components for the main insulation minimizes risk of faults during installation. At the same time, demand for higher voltage levels, combined...
Condition assessment of power transmission devices, such cable systems, is essential for their reliable operation. For example, diagnostics of oil-filled cables is important for transmission system operators to provide an indication of remaining lifetime.... Read More
The first silicone cable accessories were developed in the late 1960s and appeared together with introduction of extruded XLPE cables. The main focus at the time was on a design with field-grading and insulating parts in a prefabricated body that allowed easy... Read More
To achieve the optimum balance of cost and performance, accessories for MV and HV cables are increasingly being produced using tailor-made polymeric materials as well as specialized manufacturing processes. At the same time, developments in cable systems... Read More
Layout of pre-moulded stress cones for elastomeric cable accessories is designed and optimized using computer calculations of electrical stress on the accessory. During installation, however, stress cones are expanded, thereby reducing thicknesses of the... Read More
In recent years, application of high temperature superconductors for medium and high voltage power cables has moved progressively from the ‘prototype phase’ to initial field testing. Use of specialized materials, where the effect of superconductivity... Read More
Self-supporting, fluid-filled terminations have been used since the advent of HV cables and continue to be the first choice among most network operators due to their excellent long-term performance. Recently, composite housings have increasingly replaced... Read More
Cable accessories perform the key function of ensuring required insulation either at the connection points of cables (straight joints) or at their ends (terminations). These accessories have to be easy and safe to install over a broad range of different cable... Read More