Excitation Transformers

Excitation Transformers are used to excite the field of generators through a rectifier. They are designed to handle non-linear, non-sinusoidal loads resulting from their use with a variety of power electronic applications such as diode, thyristor or motor drive configurations from 6, 12, 24, 36, 48, or 60 pulse configurations.

Transformer Specifications

Special design considerations should be used to account for the additional harmonic heating, more severe axial forces, severe overloads and short circuit forces that can be seen as compared with a standard power transformer. Niagara Power Transformer’s superior engineering expertise paired with our unmatched years of manufacturing experience and high-grade materials allow us to provide the best in-class Excitation Transformers.

  • Used to excite the field of generators through a rectifier
  • Designed to accommodate specified over voltage and over load conditions
  • Specialty circuit configurations
  • Multiple pulse applications
  • Up to 50 MVA base rating
  • Up to 138 kV, 650 kV BIL
  • Copper or aluminum wound
  • Designed to meet specific harmonic spectrums
  • Industry leader in process and high current applications
  • Seismic classifications
  • Mineral Oil, Enviro Temp FR3, Luminol, or other liquids
  • Sealed tank or conservator tank designs
  • Special dimensional requirements
  • Non-standard elevation and ambient designs
  • Special service conditions
  • Meets ANSI/IEEE Standard C57.18.10

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