摘要
利用DETAL—2000测试仪对电缆试样进行介质损耗角正切的测量试验,发现电缆试样的介质损耗角正切开始为负,但随着测量电压的升高逐渐增大,在试样发生表面击穿时,变成正值。对试验结果进行分析,得到电缆试样的介质损耗值为负值的原因主要为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。
The dielectric Loss is tested using the instrument of DETAL—2000 and the dielectric loss obtained shows that it is negative at first and increases with higher testing voltage,furthermore becomes positive when sample surface is swamped.The results obtained from the testing reveals that the causes of negative are mainly due to the interference of external electromagnetic field with electronic bridge and more capacitance loss.Therefore some relevant technique measures should be taken to remedy it.
出处
《西华大学学报（自然科学版）》
CAS
2006年第5期63-65,共3页
Journal of Xihua University:Natural Science Edition
关键词
电缆试样
介质损耗
分析
sample of cable
dielectric Loss
analysis
