Title :
Insulation morphology effects on the electrical treeing resistance
Author :
Harlin, Ali ; Shuvalov, Michail ; Ovsienko, Vladimir ; Juhanoja, Jyrki
Author_Institution :
Conex Cables Oy, Vantaa, Finland
fDate :
6/1/2002 12:00:00 AM
Abstract :
Samples of 220 kV cross linked polyethylene (XLPE) insulated cables were studied by means of video microscopy and electrical treeing tests. The morphology of extruded dielectric has been shown to be of importance. The tree initiation voltage level improved some 20% when the morphology was influenced by means of screw engineering. Crystal sheaves sizes were reduced with the help of improved melt homogeneity
Keywords :
XLPE insulation; extrusion; polymer structure; power cable insulation; trees (electrical); 220 kV; XLPE cable insulation; cross-linked polyethylene; crystal sheaf; electrical treeing resistance; extruded dielectric; melt homogeneity; morphology; screw engineering; tree initiation voltage; video microscopy; Cable insulation; Cables; Dielectrics and electrical insulation; Electric resistance; Microscopy; Morphology; Polyethylene; Testing; Trees - insulation; Voltage;
Journal_Title :
Dielectrics and Electrical Insulation, IEEE Transactions on
DOI :
10.1109/TDEI.2002.1007703
