Pennsylvania Transformer Technology (PTT) taps its 1,000,000-square-foot facility, in-house engineering team, and decades of expertise to bring core cutting, insulation fabrication, tank construction, and more under one vertically integrated roof. This end-to-end control reduces supplier dependence, sharpens quality, and speeds delivery across the entire transformer supply chain.
Pennsylvania Transformer Technology (PTT) leverages its expansive manufacturing facilities in Canonsburg, PA and Raeford, NC to control every major stage of transformer production—from core cutting and insulation fabrication to tank construction and vapor-phase drying—ensuring quality, efficiency, and reliability. This deep vertical integration, supported by significant investments in moisture-mitigation technology and facility upgrades, strengthens PTT’s ability to deliver high-performance transformers while reducing dependency on external suppliers.
PTT operates North America’s largest GEORG automatic core cutting and stacking line, now enhanced with a new GEORG e-stacker commissioned in January 2025 to produce precision transformer cores with industry-leading burr levels, air gaps, and capacity. Using only high-grade domestic electrical steel, the fully in-house cutting and stacking process ensures exceptionally accurate, tightly built, and properly grounded transformer cores for reliable performance.
PTT’s dedicated 200,000 sq. ft. transformer tank manufacturing shop is fully equipped to cut, form, weld, blast, and finish high-quality transformer and conservator tanks. Combining precision plate-cutting technology, skilled welders, heavy-capacity lifting systems, and a high-pressure blast and paint line, the facility ensures durable, structurally sound, and corrosion-resistant transformer enclosures.
PTT’s moisture-mitigation program centers on its two large-capacity vapor-phase autoclaves, which thoroughly dry assembled core and coil packages to ensure superior insulation performance and long-term transformer reliability. A recent multi-million-dollar refurbishment—including upgraded control systems and advanced moisture-monitoring technology—ensures precise, consistent drying, followed by immediate transfer to a controlled post–vapor-phase room for final tightening and quality checks.
PTT fabricates high-voltage transformer insulation by sourcing premium raw materials and precisely cutting and forming them in-house. Using advanced CNC routing technology, PTT produces core and coil insulation packages with exceptional fit, dielectric performance, and short-circuit strength.
PTT’s expanded, temperature- and humidity-controlled winding room now includes a dedicated coil nesting area designed to maintain optimal environmental conditions for high-voltage transformer winding precision. This controlled workspace follows industry best practices—ensuring coils are accurately sized, nested, clamped, and quality-verified to support superior electrical performance and long-term reliability.
HIGH-BAY EXPANSION PTT’s Raeford, N.C. transformer production facility was expanded with the addition of a high-bay area with 60 ton crane capacity. This allows PTT to more economically serve the Southeast US market with larger transformer sizes PAINT BOOTH With the addition of a new paint booth, transformers built in Raeford are painted to the same high-quality standards used in our Canonsburg, Pa. facility.
VAPOR-PHASE PROCESSING All units built in Raeford, regardless of voltage class, are vapor-phase processed. No shortcuts are taken. Moisture absorption is not left to chance and to outdated drying processes. FACTORY ACCEPTENCE TEST EQUIPMENT Investment in power test equipment has created a state-of-the-art test department. The test area boasts new induced/corona measurement, loss measurement, and impulse scope equipment.
