Title :
Evaluation of service aged 35 kV TR-XLPE URD cables
Author :
Katz, Carlos ; Walker, Michael
Author_Institution :
Cable Technol. Lab. Inc., New Brunswick, NJ, USA
fDate :
1/1/1998 12:00:00 AM
Abstract :
This paper provides information on the aging of URD power cable insulated with a tree-retardant crosslinked polyethylene (TR-XLPE) compound, installed in a typical utility environment, Numerous evaluations were performed on samples of power cables aged up to 7 years in-service. AC and impulse voltage breakdown data are compared with data for similar 35 kV ethylene propylene rubber (EPR) and crosslinked polyethylene (XLPE) insulated cables removed from the same utility system. The data show that, to date, the rate of degradation of TR-XLPE cables is less than that of the EPR and XLPE insulated cables. Extrapolation of the data, assuming the same rate, indicates TR-XLPE cable will have the longest life
Keywords :
XLPE insulation; ageing; electric breakdown; insulation testing; life testing; power cable insulation; power cable testing; underground cables; underground residential distribution systems; 35 kV; AC breakdown; URD cables; impulse voltage breakdown; power cable insulation testing; service ageing; tree-retardant crosslinked polyethylene; Aging; Cable insulation; Degradation; Dielectric breakdown; Paramagnetic resonance; Performance evaluation; Polyethylene; Power cables; Rubber; Trees - insulation;
Journal_Title :
Power Delivery, IEEE Transactions on
