There are several key differences between a dry-type transformer and an oil-filled transformer. The main differences include the type of insulation used, the cooling method, the size and weight, and the applications for which they are typically used.
One of the main differences between a dry-type transformer and an oil-filled transformer is the type of insulation used. A dry-type transformer uses air or other gases as the insulation medium, while an oil-filled transformer uses oil as the insulation medium.
Another key difference is the cooling method. A dry-type transformer is cooled by natural air convection or forced air, while an oil-filled transformer is cooled by the oil that surrounds the transformer’s core and windings.
The size and weight of the transformers also differ. Dry-type transformers are typically smaller and lighter than oil-filled transformers, which makes them more suitable for applications where space is limited or where the transformer needs to be easily transported.
Finally, the applications for which dry-type and oil-filled transformers are typically used also differ. Dry-type transformers are commonly used in low-voltage and medium-voltage applications, such as in commercial buildings and industrial facilities. Oil-filled transformers, on the other hand, are typically used in high-voltage applications, such as in power transmission and distribution systems.
Overall, dry-type and oil-filled transformers are two different types of transformers that have different characteristics and are suited to different applications.