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General purpose ventilated transformers

Eaton’s types DS-3 (single-phase) and DT-3 (three-phase) general purpose ventilated dry-type transformers are of the two-winding type, self-cooled, and are available in a wide variety of primary and secondary voltage combinations. General purpose transformers are designed, manufactured and tested in accordance with all of the latest applicable ANSI, NEMA and IEEE standards, and are designed for continuous operation at rated kVA.
General purpose ventilated transformers
Voltage class
Single-phase 7.5-333 kVA Three-phase 7.5-1500 kVA
Winding conductor
Aluminum or copper

Core features

  • Includes  transformers with DOE 2016 and NEMA TP-1 efficiency requirements, and transformers with other efficiency requirements
  • Ventilated Dry-Type Distribution Transformers  options in aluminum or copper windings
  • Available in 150°, 115°, and 80° C temperature rise
  • Optional low-sound  3dB and 5dB below NEMA ST-20 standard
  • Available in 60 and 50 Hz
  • NEMA 2 standard enclosures,  NEMA 3R with field-installed weathershields
  • Transformers include a versatile bonding/grounding bar affixed to the bottom panel as standard, to provide compliance with NEC 450.10(A)

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