中性点不直接接地系统发生单相短路故障，非故障相电压上升为(  )。

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69509' and id < 4503096 and id<>'4503096' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69509' and id > 4503096 and id<>'4503096' order by id asc limit 5