Totally enclosed non-ventilated dry type transformers are for special applications, where because of adverse atmospheric conditions it is desirable to use a dry type non-ventilated transformer vs. the ventilated standard unit, which has openings in its enclosure to allow air to flow directly over the core and coil. In applications where the atmosphere contains conductive, corrosive, or combustible materials, which might damage a transformer, or lint and dust flyings which might block the ventilation passages, the non-ventilated transformer is highly suited. It has no openings in the enclosure. Heat is dissipated by radiating from the surface area of the enclosure. Consequently, the enclosures are larger than those of the standard ventilated type. Non-ventilated transformers are suited for application in the textile, chemical, automotive, etrochemical, foundry, cement, food, paper, and other industries where the transformer is subject to spray or washdown conditions.

MGM's TENV transformers are also available in stainless steel enclosures.
Click here to learn some of the benefits of stainless steel.