预制式电缆终端应力锥安装错位试验

Test on Incorrectly Installed Stress Cone of Prefabricated Cable Terminal

预制式电缆终端在现场安装时,存在应力锥安装错位的情况。通过试验,分析比较在应力锥不同尺寸错位安装时预制式终端的工作情况。试验结果表明:应力锥安装尺寸不足时,只有在承受较大电压的情况下,终端才出现局部放电;应力锥安装尺寸过盈时,在承受的电压远小于工作电压的情况下,终端也会出现局部放电。

The stress cone of prefabricated cable terminal may be installed incorrectly on site. The conditions of prefabricated terminal during incorrect stress cone installation of different magnitudes are analyzed through testing. The test results show that in the case of inadequate installing dimension of stress cone, the terminal will suffer partial discharge only under considerable voltage; in the case of installing dimension interference of stress cone, the terminal will also suffer partial discharge even under a voltage much less than the operating voltage.