Based on examples, the problems in reinstallation process of oil pump, tap-changer and bushing after transformer maintenance overhaul are analyzed. The measures to prevent the problems are presented.

• 摘要以实例分析了变压器大修后潜油泵、无励磁分接开关、套管回装过程中存在的问题，提出了防止类似问题发生的措施。