lightning;
surge arrester;
zinc oxide element;
distribution line;
oil-immersed transformer;
D O I:
10.1109/61.660914
中图分类号:
TM [电工技术];
TN [电子技术、通信技术];
学科分类号:
0808 ;
0809 ;
摘要:
About ten years have passed since oil immerse surge arrester elements enclosed in 6.6kV Dole transformers been used. At, present. technical developments are being demanded to judge the soundness of these oil immersed surge arrester elements by a simple method anti easily judge whether these elements can he used or not on site. The authors empirically investigated correlation between the insulation resistance and the deteriorated ratio of the reference voltage of these oil-immersed surge arrester elements. It was found that the deterioration of the oil-immersed surge arrester elements can be detected by measuring the insulation resistance by a megger.