Title : 
The role of spacer surface conditions in the scatter of charge accumulations in SF6
         
        
            Author : 
Jing, T. ; Morshuis, P.H.F. ; Kreuger, F.H.
         
        
            Author_Institution : 
Inst. of Stand. & Ind. Res., Singapore
         
        
        
        
        
        
            Abstract : 
A cylindrical epoxy spacer with different surface roughnesses was stressed under +150 kV in SF6. It is found that artificial roughness has no significant influence on the charge accumulation. Influences come from the variation in the surface conditions of the spacer by roughening it artificially. An additional test also shows that the micro structure at the spacer surface is more responsible for the large scatter of charge accumulation than that at the electrodes
         
        
            Keywords : 
Charge measurement; Dielectrics; Electrodes; Flashover; Permittivity; Rough surfaces; Scattering; Surface roughness; Surface treatment; Testing;
         
        
        
        
            Conference_Titel : 
Properties and Applications of Dielectric Materials, 1994., Proceedings of the 4th International Conference on
         
        
            Conference_Location : 
Brisbane, Qld.
         
        
            Print_ISBN : 
0-7803-1307-0
         
        
        
            DOI : 
10.1109/ICPADM.1994.413992