Title :
Insulation as Affected by Immobile High-Current Discharge
Author_Institution :
Dept. of Electrical Engineering Ben-Gurion University of the Negev, Beersheva, Israel
Abstract :
We make an analytical investigation of the effect of electricaldischarge on the surface and deeper layers of insulation up tothe stage of phase change of the material or its components. Fordischarge in a narrow insulating channel, which has been closelyinvestigated, calculations are shown to correspond to observedexperience. The great importance of the upper thin layer ofinsulation to arc resistance of the material is emphasized. Asimplified formula for calculating the penetration depth of anassigned temperature is given.
Keywords :
Conducting materials; Dielectrics and electrical insulation; Fault location; Optical surface waves; Phase change materials; Surface discharges; Surface resistance; Temperature; Thermal conductivity; Voltage;
Journal_Title :
Electrical Insulation, IEEE Transactions on
DOI :
10.1109/TEI.1979.298204
