复合芳香族聚酰胺绝缘中的传导电流

Proceedings of IEEE Conference on Electrical Insulation and Dielectric Phenomena - (CEIDP '93) Pub Date : 1993-10-17 DOI:10.1109/CEIDP.1993.378980

M. A. Sussi, G. G. Govinda Raju

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引用次数: 1

摘要

在恒定极化温度为2000/spl℃，极化场范围为1.31 ~ 9.84 MVm/sup -1/时，测定了复合聚酰胺样品的典型导电电流。观察到导电电流随时间衰减，甚至在电场施加5小时后也达不到稳态。在152.4 /spl mu/m厚的复合聚酰胺纸上绘制了不同温度下外加电场的等时电流曲线。电极材料为A1。观察到两个不同的区域，一个在低于4 kVcm/sup -1/的电场中，传导电流为欧姆;另一个在大于4kVcm/sup -1/的电场下，导电电流偏离欧姆行为。

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Conduction currents in composite aromatic polyamide insulation

Typical conduction currents have been determined for a composite polyamide sample at a constant poling temperature of 2000/spl deg/C and various poling fields ranging from 1.31 to 9.84 MVm/sup -1/. The conduction current is observed to decay with time, and does not reach steady-state even after five hours from the time the electric field is applied. Isochronal currents are plotted as a function of applied electric field at various constant temperatures for 152.4 /spl mu/m thick paper of composite polyamide. The electrode material is A1. Two distinct regions are observed, one at electric fields below 4 kVcm/sup -1/ where conduction currents are Ohmic; and the other at electric fields greater than 4kVcm/sup -1/, where the conduction currents deviate from Ohmic behaviors.<>

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Proceedings of IEEE Conference on Electrical Insulation and Dielectric Phenomena - (CEIDP '93)

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