Title :
Smoothness evaluation of clean furnace blacks
Author :
Greene, Steven L.
Abstract :
The use of furnace process carbon blacks in semiconductive shields for cable is well known. For medium- to high-voltage power cables, furnace carbon black-filled semiconducting materials are used most notably to prevent a partial discharge at the surface between the conductor and the insulation or the insulation and the insulation shield layers. The author shows that two critical carbon black properties play a role in shield interface smoothness: dispersibility, and the amount of organic and inorganic residue present in the product.<>
Keywords :
ageing; cable sheathing; cable testing; carbon; insulation testing; life testing; power cables; surface topography; dispersibility; furnace C black-filled semiconducting materials; furnace process C blacks; high-voltage power cables; inorganic residue; medium-voltage power cables; melt flow index; organic residue; partial discharge prevention; semiconductive shields; shield interface smoothness; volume resistivity; wet electrical aging; Cable insulation; Cable shielding; Conducting materials; Furnaces; Organic materials; Partial discharges; Power cables; Semiconductivity; Semiconductor materials; Surface cleaning;
Journal_Title :
Electrical Insulation Magazine, IEEE