Station Service Transformers (SST)


A Station Service Transformer from Niagara Transformer can take care of all of your power needs. This transformer can come as a single, double, or three-phase transformer. It can come in copper or aluminum allowing you to have it fit your specific needs. This Utility Grade Transformer transfers the same amount of power that it receives. However, it can increase or decrease the voltage or current levels that come in.

Transformer Specifications

To keep power losses at a minimum, the transformer’s system usually decreases the current level. Niagara Transformer can adhere to different county codes and regulations when installing and maintaining your new Electric Utility Grade Transformer. Our skilled technicians have years of experience and will install your new transformer efficiently and safely. Niagara Transformer’s superior engineering expertise paired with its unmatched years of manufacturing experience and high-grade materials allow us to provide the best in-class Station Service Transformers.

  • Up to 50 MVA base rating
  • Up to 138 kV, 650 kV BIL
  • 1, 2 or 3 phase
  • 60 or 50 hertz ONAN, ONAF, OFAF, ONWF
  • 55ºC or 65ºC rise
  • Copper or aluminum
  • Circular, rectangular, disc, helical, layer
  • Harmonic allowances up to K-20
  • High efficiency
  • Low sound level
  • High short circuit strength
  • Conservator or Sealed tank construction
  • With or without on load tap changers (LTC)
  • Up to 20% IZ
  • IEEE/ANSI or IEC Standards
  • Full range of country specific certifications
  • High ambient & elevation designs available
  • Classified area designs available through Class 1 Division 2 Group C/D
  • Seismic designs through Seismic zone 4
  • UL Certified
  • Mineral Oil, Enviro Temp FR3, Luminol, or other liquids
  • Full in-house testing
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