Title :
Some aspects of water tree growth in XLPE insulation exposed to DC voltage
Author :
Czaszejko, Tadeusz
Author_Institution :
Dept. of Electr. & Comput. Syst. Eng., Monash Univ., Melbourne, Vic., Australia
Abstract :
A preliminary study of the influence of the short exposure to DC voltage on the growth of water trees in XLPE cable insulation was performed. The DC voltage of 4U0 (where U0 is the rms rated voltage) was applied for the duration of 15 minutes prior to AC aging, in one set of samples, and in the middle of AC aging, in another set of identical samples. The results have shown an increase of the average length of water trees grown in samples subjected to DC voltage compared with those not exposed to DC voltage. The result was similar for accelerated aging with the liquid needle electrode method and for plain samples aged under rated voltage
Keywords :
XLPE insulation; ageing; insulation testing; life testing; power cable insulation; trees (electrical); 15 min; DC voltage; XLPE insulation; accelerated aging; liquid needle electrode method; power cable insulation; rated voltage; rms rated voltage; water tree growth; Aging; Cable insulation; Cable shielding; Cables; Dielectrics and electrical insulation; Electrodes; Needles; Polyethylene; Trees - insulation; Voltage;
Conference_Titel :
Electrical Insulating Materials, 1995. International Symposium on
Conference_Location :
Tokyo
Print_ISBN :
4-88686-047-8
DOI :
10.1109/ISEIM.1995.496529
