1996•IEEJ Transactions on Fundamentals and MaterialsOpen access

Relationship between Space Charge and AC treeing in Low Density Polyethylene under Needle-Plane Electrode systems

Masahiro Fukuzawa, Takaichi Yoshitake, Hiroshi Yumiba, Mitsumasa Iwamoto

Abstract

In our previous paper, we reported the relationship between the electrical treeing and space charge formed in low density polyethlene (LDPE) films. In the present paper, we measured the frequency (10-120Hz) dependence of the inception voltage of treeing and the length of the path generated in LDPE. We then measured thermally stimulated current (TSC) in LDPE films. We estimated the length of the path, the depth of electron injection and relaxation of space charge formed in LDPE by using the experimenOtal results of TSC measurements. From these results, we concluded that the length of the path generated by the electrical treeing was approximately as same as the depth of electerons injected by the application of AC voltages.

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Key concepts: Low-density polyethylene, Electrical treeing, Space charge, Materials science, Electrode, Polyethylene, Voltage, Relaxation (psychology)