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Measurement of Dielectric Loss tanδ on Cable
Author(s): 
Pages: 13-15
Year: Issue:  4
Journal: OPTICAL FIBER & ELECTRIC CABLE AND THEIR APPLICATIONS

Keyword:  电缆介质损耗角正切测试;
Abstract: 利用DELTA-2000测试仪对电缆试样进行介质损耗角正切(tanδ)的测量试验,发现电缆试样的tanδ开始为负值,但随着测量电压的升高,tanδ逐渐增大,之后tanδ变成正值,直到试样发生表面击穿.对试验结果进行分析,得到电缆试样的tanδ值为负值的主要原因是外界电磁场对电桥的干扰和标准电容损耗较大,并提出了相应的技术处理措施.
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