Lightning Impulse Characteristics for 22.9 kV CV Power Cable Before and After Cyclic Aging for 14days
22.9 kV CV 전력케이블의 14주기 고온 열화에 대한 Lightning-Impulse 특성
- Kim, We-Young (KERI) ;
- Yun, Dae-Hyuk (Changwon Nat'l University) ;
- Park, Tae-Gone (Changwon Nat'l University)
- Published : 2001.07.18
Cyclic aging for 14 days is performed to remove a large amount of the volatiles found in freshly manufactured cable. In this paper, we examined lightning impulse characteristics of 22.9 kV CV power cable before and after cyclic aging for 14days. As the result, the breakdown voltage after aging under normal temperature was lower than that before aging, and the breakdown voltage after aging under hot temperature was lower than that before aging. We found that the dispersion of lightning impulse breakdown voltage before 14 cyclic aging test were reduced rather than those after 14 cyclic aging test.