紫外线照射对低压电缆绝缘的影响

Conference Record of the 2004 IEEE International Symposium on Electrical Insulation Pub Date : 2004-09-19 DOI:10.1109/ELINSL.2004.1380591

R. Arora, V. Tripathi

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引用次数: 4

摘要

为了将低压(额定1.1 kV)地下交联聚乙烯和聚氯乙烯绝缘电力电缆与架空配电网连接，采用短长度的铁芯绝缘，其末端经常暴露在大气中。据报道，这种暴露的绝缘材料在安装后的几个月内就会出现裂缝并变脆。室内加速紫外辐照实验研究表明，老化对交联聚乙烯芯绝缘材料的力学性能有显著影响。在机械应力作用下，保温材料的老化速度更快。

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Effect of ultra violet irradiation on low voltage cable insulation

To connect the low voltage (1.1 kV rating) underground XLPE and PVC insulated power cables with the overhead distribution network, short lengths of the core insulation are used with their ends often exposed to the atmosphere. Such exposed insulation is reported to develop cracks and become brittle within a few months of installation. Experimental investigation with accelerated UV irradiation in the laboratory revealed significant aging effect on the mechanical properties of XLPE core insulation material. The aging process was found to be faster when the insulation material was under mechanical stress.

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Conference Record of the 2004 IEEE International Symposium on Electrical Insulation

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