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Open core-coil transformers

Open core-coil transformers are suitable for use by OEMs who require a ventilated transformer for use in their assemblies. Typical loads for open core-coil assemblies include lighting, heating, air conditioners, fans, and machine tools. They are a versatile option compare to purchasing a standard, enclosed transformer and discarding the unneeded enclosure parts.
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 (DTDT) 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
  • Open core-coil mounted on standard OEM brackets

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