Temperature increase and charging current in polyethylene film during application of high voltage

Zhang, Chao; Kaneko, Kazue; Mizutani, Teruyoshi
December 2001
Applied Physics Letters;12/3/2001, Vol. 79 Issue 23, p3839
Academic Journal
Temperature increase in a low density polyethylene film during the application of high dc voltage was estimated by measuring the sound velocity with a pulsed electroacoustic method. The temperature shows no change under the electric field of 50 MVm[sup -1] at ambient temperature of 30 °C. However, the temperature increases with time, and rises to 63.7 °C in 90 min of the voltage application at ambient temperature of 60 °C. The temperature increase was caused by Joule heating and it resulted in the increase of charging current during the application of high dc voltage. The increase in charging current calculated from the temperature increase agreed well with the experimental one. © 2001 American Institute of Physics.


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