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Low-voltage transformers
General purpose ventilated transformers
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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.
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Learn about dry-type transformers fundamentals
Voltage class
600V
Ratings
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)

View design guide (layouts, technical data and application information)

Download guide spec (26 22 13)

Learn more about transformer family

Transformers Flex Center custom solutions

Learn how our Transformer Flex Center can help you meet unique general-purpose and distribution transformer needs that cannot be met with standard offerings

U.S. Department of Energy’s 2016 transformer efficiency changes

Discover the impact on inrush current for low-voltage dry-type transformers
Read white paper

Important aspects of dry-type distribution transformers

Explore best practices for the installation and inspection of dry-type distribution and power transformers
Read white paper

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Eaton’s mission is to improve the quality of life and the environment through the use of power management technologies and services. We provide sustainable solutions that help our customers effectively manage electrical, hydraulic and mechanical power – more safely, more efficiently and more reliably. Eaton’s 2019 revenues were $21.4 billion, and we sell products to customers in more than 175 countries. 
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