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A method for measuring leakage current in LDPE insulated miniature cables containing volatile additives is presented. It is shown that with the presented method the volatiles are sufficiently contained in the test object even at temperatures up to 90 °C. This is achieved through non permeable encapsulation around the outer insulation screen (extruded semiconducting layer). Guard electrodes are adopted...
Syndiotactic polypropylene (s-PP) is an extrudable polymer with properties which should make it highly suitable as high voltage cable insulation, including high AC breakdown strength, flexibility and a high melting point. However, for HVDC applications it is important to improve the knowledge of charge transport phenomena which control the field distribution. This paper presents electrical conductivity...
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