Oncor provides electricity to over 10 million Texans- over 1/3 of the state’s population. With the largest annual population growth in the nation at 211,000 per annum, Texans need electricity and Oncor is supplying it! With this continued growth, Oncor’s current need is to interconnect more of the distribution network at different operating voltages. Oncor is accomplishing this by installing VanTran auto-transformers in their growing residential and rural communities. VanTran’s single phase auto-transformers were chosen over three phase padmount designs due to difficulties associated with easement, reliability and installation costs.

  • Difficulties of getting easements with three-phase design.
  • Single phase failure in a three-phase transformer requires replacement of an entire three phase transformer.
  • Single phase facilitates mobility and field installation, as does not require expensive cranage.

VanTran Value Proposition

  • Smaller overall footprint eliminated easement restrictions.

  • Benefit of only having to replace one failed phase versus an entire three phase transformer.

  • Ease of transporting, offloading and installing smaller and lighter single-phase transformers with standard contractor material handling equipment.