The results indicate that , the effect on the electric and mechanical performances of 500kv dc ceramic support insulators could not be founded 化学分析结果表明长期离子迁移试验并未引起直流支柱瓷材料na ~ + 、 k ~ +含量明显的变化。
On the base of the iec standard of dc suspension insulators , we designed a new ion migration test for 500kv dc ceramic support insulators , including the regulation between the bulk resistance and the temperature , the test samples , the test voltage and the temperature for long - term ion migration test , and the amount of accumulative charges 以悬式绝缘子离子迁移试验标准为基础,完整的设计了500kv直流支柱式瓷绝缘子离子迁移试验,其中包括研究了试品体积电阻随温度场强变化的规律,成功的设计了试验试品,确定了长期离子迁移试验电压( 40kv )和试验温度( 130 ) ,计算了50年累计电荷量( 0 . 173c ) 。
This thesis is founded on the investigation of the ion migration of 500kv dc ceramic support insulators for the production of the 500kv dc ceramic support insulators . in the test system , we added the grounding switch for each circuit and the mutual switch , prescribed the four status of the current measuring program , making the measurement system more stabile 在对离子迁移试验研究的过程中,对原有离子迁移试验测量系统进行了改进,通过为每路泄漏电流回路设置接地开关及公共测量开关,并在软件上为测量回路设定4种状态,提高了测量系统的稳定性。