Abstract
Discharging current which is measured after voltage application on a dielectric solid usually flows in the opposite direction to the applied field. Anomalous discharging current which flows in the same direction as the applied field is observed in polymethylpentene at temperatures higher than 100 °C. The effects of electrical stress and voltage application period on the appearance of anomalous current were examined. On the condition when the discharging current becomes anomalous, layers of hetero charges accumulated during voltage application are observed with the pulsed electroacoustic method. The accumulated charges decrease significantly after the anomalous discharging current was observed for 5 minutes. On the assumption that charge movement is ruled by the electric field formed by space charges, simulation of discharging current was carried out. The simulated discharging current agrees well with the experimental data, when it is calculated by assuming the mobility of positive charge to be μ p = 2.5 × 10 -10 cm 2/Vs and that of the negative charge to be μ n = 7 × 10 -11 cm 2/Vs.
| Original language | English |
|---|---|
| Title of host publication | Conference on Electrical Insulation and Dielectric Phenomena (CEIDP), Annual Report |
| Publisher | IEEE |
| Pages | 496-499 |
| Number of pages | 4 |
| Publication status | Published - 1995 |
| Event | Proceedings of the 1995 Conference on Electrical Insulation and Dielectric Phenomena - Virginia Beach, VA, USA Duration: 1995 Oct 22 → 1995 Oct 25 |
Other
| Other | Proceedings of the 1995 Conference on Electrical Insulation and Dielectric Phenomena |
|---|---|
| City | Virginia Beach, VA, USA |
| Period | 95/10/22 → 95/10/25 |
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ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Industrial and Manufacturing Engineering
- Building and Construction
Cite this
Anomalous discharging current in polymethylpentene. / Asai, Sotaro; Ohki, Yoshimichi.
Conference on Electrical Insulation and Dielectric Phenomena (CEIDP), Annual Report. IEEE, 1995. p. 496-499.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Anomalous discharging current in polymethylpentene
AU - Asai, Sotaro
AU - Ohki, Yoshimichi
PY - 1995
Y1 - 1995
N2 - Discharging current which is measured after voltage application on a dielectric solid usually flows in the opposite direction to the applied field. Anomalous discharging current which flows in the same direction as the applied field is observed in polymethylpentene at temperatures higher than 100 °C. The effects of electrical stress and voltage application period on the appearance of anomalous current were examined. On the condition when the discharging current becomes anomalous, layers of hetero charges accumulated during voltage application are observed with the pulsed electroacoustic method. The accumulated charges decrease significantly after the anomalous discharging current was observed for 5 minutes. On the assumption that charge movement is ruled by the electric field formed by space charges, simulation of discharging current was carried out. The simulated discharging current agrees well with the experimental data, when it is calculated by assuming the mobility of positive charge to be μ p = 2.5 × 10 -10 cm 2/Vs and that of the negative charge to be μ n = 7 × 10 -11 cm 2/Vs.
AB - Discharging current which is measured after voltage application on a dielectric solid usually flows in the opposite direction to the applied field. Anomalous discharging current which flows in the same direction as the applied field is observed in polymethylpentene at temperatures higher than 100 °C. The effects of electrical stress and voltage application period on the appearance of anomalous current were examined. On the condition when the discharging current becomes anomalous, layers of hetero charges accumulated during voltage application are observed with the pulsed electroacoustic method. The accumulated charges decrease significantly after the anomalous discharging current was observed for 5 minutes. On the assumption that charge movement is ruled by the electric field formed by space charges, simulation of discharging current was carried out. The simulated discharging current agrees well with the experimental data, when it is calculated by assuming the mobility of positive charge to be μ p = 2.5 × 10 -10 cm 2/Vs and that of the negative charge to be μ n = 7 × 10 -11 cm 2/Vs.
UR - http://www.scopus.com/inward/record.url?scp=0029489072&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0029489072&partnerID=8YFLogxK
M3 - Conference contribution
SP - 496
EP - 499
BT - Conference on Electrical Insulation and Dielectric Phenomena (CEIDP), Annual Report
PB - IEEE
ER -