Through the analysis and study of the grounding fault of TYD3-110/3~(1/2) series of capacitive voltage transformers(CVT), it is found out that the connatural design deficiencies are the main reasons of faults.

• 通过对TYD3-110/3~(1/2)系列电容式电压互感器(CVT)接地故障的分析、研究发现,该型电容式电压互感器自身存在的设计缺陷是故障发生的主要原因。