勘探工程中使用的变压器,由于長期运行或停放,以及因某种原因而受潮,发生絕緣电阻降低到允許值以下时,就必須进行乾燥处理,以恢复絕緣性能,保証正常运行。变压器的乾燥方法很多,木文仅就我們在乾燥时,运用的苏联先进工作經验相序乾燥法,作简要的介紹。使用这种方法来乾燥地質勘探部门所常用的中、小型变压器,不但比一般采用的鉄损乾燥法經济、簡便。而且也保証了人身和設备的安全。 Transformers used in exploration projects must be dried to restore their insulation performance and ensure proper operation due to long-term operation or parking, as well as moisture for some reason, and insulation resistance drops below the allowable value. There are many ways to dry the transformer. The article only briefly introduces the Soviet Union’s advanced working experience with the phase sequence drying method when we dry it. Using this method to dry small and medium-sized transformers commonly used in geological exploration departments is not only economical and simple than the commonly used method of damage drying. It also ensures the safety of people and equipment.