On the Degradation Mechanism of Low-Voltage Underground Cable with Poly(Vinyl Chloride) Insulation

被引：9

作者：

Tawancy, H. M. ^{[1
]}

Hassan, M. ^{[1
]}

机构：

[1] King Fahd Univ Petr & Minerals, Res Inst, Engn Res Ctr, POB 1639, Dhahran 31261, Saudi Arabia

来源：

JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE | 2016年 / 25卷 / 06期

关键词：

electron; failure Analysis; infrared spectroscopy; microscopy; NMR; oxidation; polymers and plastics; THERMAL-DEGRADATION; TG-FTIR; PLASTICIZER; BEHAVIOR;

D O I：

10.1007/s11665-016-2109-1

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A study has been undertaken to determine the degradation mechanism leading to localized short-circuit failures of an underground low-voltage cable with PVC insulation. It is shown that that the insulation of outer sheath and conductor cores has been cracked by thermal degradation involving dehydrochlorination, oxidation, and loss of plasticizers leading to current leakage between the cores. Most evidence points out that overheating due to poor connection of copper wires as well as a chemically active soil has caused the observed degradation.

引用

页码：2288 / 2295

页数：8

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