热应力和电热应力老化下EPR电缆模型的电性能

ICSD'98. Proceedings of the 1998 IEEE 6th International Conference on Conduction and Breakdown in Solid Dielectrics (Cat. No.98CH36132) Pub Date : 1998-06-22 DOI:10.1109/ICSD.1998.709259

A. Motori, G. Montanari

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引用次数: 1

摘要

研究了在不同热和电热应力下老化的乙烯丙橡胶(EPR)电缆模型的直流和交流电性能与老化时间的关系。指出了直流电导率和低频介质损耗随老化条件的显著变化。在120/压升度/C以上可以设想绝缘电气性能的转变。

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Electrical properties of EPR cable models aged under thermal and electrothermal stresses

The dc and ac electrical behavior of ethylene-propylene rubber (EPR) cable models, aged under different thermal and electrothermal stresses, is investigated as a function of aging time. Remarkable changes of dc conductivity and low-frequency dielectric losses with aging conditions are pointed out. A transition in the electrical behavior of the insulation can be envisaged above 120/spl deg/C.

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ICSD'98. Proceedings of the 1998 IEEE 6th International Conference on Conduction and Breakdown in Solid Dielectrics (Cat. No.98CH36132)

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