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The role of DCP on the space charge performance of XLPE was investigated in this paper. Space charge accumulation characteristics of samples were researched through pulsed electro-acoustic (PEA) and the trapping behavior was studied by surface potential decay (SPD). The results show that the sample without DCP is injected with homo-charges. However, with the increase of DCP concentration, hetero-charges...
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...
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