Totally Enclosed Non-Ventilated Transformers

Low Voltage Distribution transformers

Totally Enclosed Non-Ventilated Transformer

Totally Enclosed Non-Ventilated (TENV) transformers are highly suitable for adverse atmospheric conditions. They are built to restrict unintentional circulation of external air through the enclosure. TENV are desired in areas where conductive, combustible or corrosive materials like lint, dust or dirt are present. The fully enclosed non-ventilated transformers are available in aluminum or copper windings from 15 to 333kVA.

Applications include food processing, pulp and paper, foundry, textile, electrochemical and other industries where the transformers may be exposed to spray or wash down conditions.

food processing

Food Processing



Textile processing

Textile Manufacturing

chemical manufacturing

Chemical Processing

  • Totally Enclosed Non-Ventilated (TENV) transformers are excluded from US DOE 2016 and Canada NRCan 2019 efficiency standards
  • Available in NEMA 4, 4x and 12 enclosures.
  • Copper and aluminum available
  • Ratings from 15 to 333 kVA single phase and 9 to 750 kVA three phase
  • Available in drilling or marine duty option upon request
  • Custom sizes, ratings and styles available upon request
  • Standard 150 deg C temperature rise
  • UL Listed, CSA Certified
  • Custom sizes, ratings and styles available upon request
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