INVESTIGATIONS OF THE FREQUENCY AND ELECTRIC FIELD STRENGTH DEPENDENCE OF FIELD GRADING MATERIALS FOR MEDIUM VOLTAGE CABLE ACCESSORY

Abstract

This contribution documents the preliminary investigations on two different elastomeric field grading materials designed for medium voltage cable accessory. The dielectric properties of the materials are determined under variable frequencies and electric field strengths, measured using three different setups. The experimental results provide fundamental insights into the material behaviour under high frequency stress and can be implemented in the future to model field grading behaviour under the influence of harmonics.