The difference between dry and oil immersed current transformers
Nov 23, 2022| Dry-type current transformers use ordinary organic insulating materials as their insulating medium, which are different from oil-immersed current transformers and other types of current transformers. Compared with other types of current transformers, it is more suitable for use in explosive places, and has the characteristics of fire and explosion protection. The process control requirements of dry-type current transformer products are also extremely strict, and partial discharge control is the key point.
Dry-type current transformers have similar performance to oil-immersed transformers. The biggest difference lies in the different insulating media used. The insulating medium of oil-immersed transformers uses insulating oil, and there are many types of oil-immersed types. Oil-immersed Current transformers include inverted and vertical, capacitive.
The maintenance items used by the two are also different. Except for the main insulation performance, transformation ratio and error of the dry-type current transformer, other items are generally not tested. In addition to the oil-immersed type, the performance and appearance of the insulating oil must be tested. , using maintenance projects more than dry.