Investigation on the Electrothermal Properties of Nanocomposite HDPE

Table 2

Partial discharge characteristics.

Sample	Inception voltage; (kV/mm)	Extinction voltage; (kV/mm)
Pure HDPE	18.97	13.52
HDPE with 1 wt.% alumina	19.34	13.84
HDPE with 3 wt.% alumina	20.32	14.074
HDPE with 5 wt.% alumina	22.473	18.36
HDPE with 7 wt.% alumina	21.542	17.615