Hermetically Sealed Transformer
The hermetically sealed oil transformers are normally manufactured with a sealed tank equipped with fins that allow the expansion at the temperature variations.
Free Breathing Transformer
The free breathing transformers are equipped with a cushion under the cover or a conservator to allow the oil to expand, at the temperature variations.
Special Oil Transformers
For some applications, the transformer - whether hermetically sealed or free breathing, with fins or radiators - has a customised tank design to allow the connection of other components present in the transformation cabin.
