Medium Voltage Transformers

Bringing the manufacturing experience from Pioneer’s Dry Type Group together with a team of sales professionals and engineers that understand the demands of critical applications, the Pioneer Medium Voltage Group can respond to your needs.

Each unit is specially engineered to specifications, with material options, sizes, and certifications to answer the toughest problems

Product Range

  • Size: up to 10mVA
  • KV Class: up to 34.5KV
  • BIL Capability: 150KV
  • Standard & Application Specific Custom Designs
  • UL/CSA up to 10mVA

Standard Specifications

  • Energy efficient to DOE-2016 standard through 2,500 kVA
  • Meets NRCan SOR/2018-201 standard through 7,500 kVA
  • Copper or Aluminum Windings
  • 150°C Rise / 220°C Insulation
  • 60 Hz
  • Single or Three Phase
  • Taps: 2 +/- 2 ½ %
  • VPI Processing
  • Open Core & Coil or NEMA 1 Enclosure
  • 12/18 month warranty

Download our capabilities brochure


  • Certified Test Lab
  • Multiple Transformer Testing Capability
  • Accommodations for Witness Testing

Standard Production Tests

  • Winding Resistance
  • Turns Ratio
  • Polarity
  • Excitation Current
  • No load losses
  • Load Loss & Impedance

Additional Tests

  • Sound Level
  • Temperature Rise

Features and Options

Return to Product page

See our Operation Manual

Request a Quote

Fill out this form to start the conversation on your custom project.  Download the PDF, fill it in, save it with your information and email it back to us or you can fill out this online form on our site which comes to our office.

Calculate your kVA

Use this page with the kVA calculator for single- and three-phase transformers.