Title :
Mechanisms for reduction of impulse strength resulting from small water trees
Author_Institution :
Dept. of Phys., Connecticut Univ., CT, USA
Abstract :
The impulse strength of TR-XLPE cable has been reported to drop to a greater degree than the AC strength as a function of time during service aging. In this contribution, we discuss the mechanisms by which the impulse strength can degrade to a much greater degree than the AC strength. Three frequency dependent mechanisms have been identified which include electro-thermal, electro-mechanical, and electrical
Keywords :
XLPE insulation; ageing; electric strength; trees (electrical); AC strength; TR-XLPE cable insulation; aging; impulse strength; water tree; Aging; Cable insulation; Dielectrics and electrical insulation; Frequency; Impedance; Lightning; Physics; Power cables; Retardants; Trees - insulation;
Conference_Titel :
Electrical Insulation and Dielectric Phenomena, 2000 Annual Report Conference on
Conference_Location :
Victoria, BC
Print_ISBN :
0-7803-6413-9
DOI :
10.1109/CEIDP.2000.884019
