About Pennsylvania Transformer Technology, LLC

Who We Are

Pennsylvania Transformer Technology, LLC (PTT) is a Quanta Services company and a trusted leader in oil-filled power transformer manufacturing. Serving utilities and industrial markets across the USA and Canada, we provide proven reliability and nearly a century of transformer expertise.

• Founded: Roots trace back to 1929
• Headquarters: Canonsburg, PA (former McGraw-Edison & Cooper Power Systems site)
• Additional Facility: Raeford, NC – small power transformer production since 1992
• Ownership: 100% U.S.-owned and operated

PTT's Capabilities

We manufacture a full range of transformer sizes from 5 MVA to 750 MVA through 500 kV. Our engineering and manufacturing expertise allow us to meet diverse power requirements.

Transformer Types We Build

• Generator Step-Up Transformers (GSUs)
• Autotransformers (up to 500 kV)
• Grounding and Zig-Zag Transformers
• Mobile Transformers
• Shunt Reactors
• Substation Units & Unit Auxiliaries
• Three-Phase Voltage Regulators
• Specialty & Distribution Transformers

Transformer Manufacturing Excellence

PTT has invested heavily in its U.S. manufacturing facilities, delivering world-class production capabilities.

Key Highlights

• One-million sq. ft. Canonsburg Plant with:
  • 1M-pound lifting capacity
  • Impulse generator: 2400 kV and 360 kJ
  • Two vapor-phase autoclaves
  • North America’s two largest Georg automated core cutting & stacking machines
• Advanced Design Tools: Finite-element analysis & 3D computer modeling
• Certifications: ISO 9001:2015 with Design
• Standards: Built to ANSI, IEEE, NEMA, CSA

PTT's Quality & Reliability

Our ISO-based systems guarantee maximum dielectric and short-circuit strength, producing transformers with long, trouble-free service lives.

Our Commitment

• Deliver the highest quality power transformers
• Maintain on-time production with current lead times:
  • Canonsburg, PA: 140–144 weeks ARO
  • Raeford, NC: 82–86 weeks ARO
• Ensure industry-leading reliability and performance

Service & Support / Power Solutions Division

PTT goes beyond manufacturing by offering comprehensive parts, field service, and technical support.

Support Capabilities

• Authorized supplier of replacement parts for:
  • Cooper Power
  • Federal Pacific
  • McGraw-Edison
  • Pennsylvania Breaker
  • Pennsylvania Transformer
• Inventory of 40,000+ items (transformers, breakers, load tap changers)
• Engineering services:
  • Loading capability studies
  • Cooling enhancement studies
  • Condition appraisals
  • Stray flux analyses
• Field service crews strategically located across the USA for assembly, testing, and commissioning

Why Choose Pennsylvania Transformer Technology?

• Nearly 100 years of power transformer expertise
• U.S.-based manufacturing in Canonsburg, PA & Raeford, NC
• Quanta Services affiliation for unmatched resources and stability
• Superior processes, employee pride, and proven results