Selecting Between Oil-Immersed and Dry-Type Transformers
Choosing the correct transformer type is a critical engineering decision. The selection depends on application, location, and safety requirements. A three phase oil immersed transformer uses mineral oil as a coolant and dielectric insulator. This design provides effective heat dissipation for high-power applications and is common in outdoor substations. The sealed tank protects the internal components from environmental factors.
In contrast, a cast resin distribution transformer is a dry-type unit. It uses a solid epoxy resin to encapsulate the windings instead of oil. This design is non-flammable and requires less maintenance. Its safety features make it suitable for indoor installations such as in commercial buildings, hospitals, and data centers. A complete dry type substation transformer can be installed close to the load, which reduces secondary cabling costs and power losses. Our factory produces both oil-immersed and cast resin types to meet diverse project specifications.