K-Factor Transformers

Motor Drive and KK-Factor is a measurement of harmonic content on the load side of a transformer. As the amount of harmonic-producing equipment (such as computers, printers and other switch mode devices) increases on modern distribution systems, K-Factor loads must be accommodated for when sizing a transformer.

Dongan’s K-rated transformers are designed to operate in the presence of high harmonic loads and neutralize the potentially hazardous effects of temperature increases and current circulation associated with harmonic content. We offer transformers rated at K4, K13 and K20, with higher K-ratings available upon request.


  • Double sized neutral
  • Aluminum windings
  • 220°C insulation system
  • Electrostatic shield
  • Vibration dampening pads

Click here for K-Factor Catalog

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