Power You Can Trust — Medium Voltage Three-Phase Pad Mount Transformers 500 kVA to 7,500 kVA

Transforming Power with Proven Reliability

When power and reliability matter most, Pennsylvania Transformer Technology (PTT), a Quanta Services company, delivers. PTT offers a full range of three-phase, pad-mount, and substation transformers engineered to meet your exact requirements. With capacities from 500 kVA to 7,500 kVA and voltage levels up to 46kV, our solutions are built to perform under the most demanding conditions.

PTT’s pad-mount and substation units are designed with the features that matter: rugged, weather-resistant metal enclosures, robust thermal and insulation systems, and bottom-entry underground cable connections—making them ideal for underground distribution networks, commercial campuses, industrial sites, or urban infrastructure.

PTT is a U.S.-based pad mounted transformer producer specializing in custom-engineered pad-mount distribution transformers for utility, commercial, industrial, data centers, BESS and renewable energy applications. Our medium voltage pad mounted transformers are designed for power distribution systems requiring high efficiency, ANSI/IEEE compliance, and long-term reliability. PTT delivers performance-driven solutions built to meet strict utility and project specifications.

Engineered Power You Can Trust — Padmount Transformers

Capacities from 500 kVA to 7,500 kVA and voltage levels up to 46k

Choose between copper or aluminum windings and Type II mineral oil or natural ester fluids, ensuring the perfect balance of efficiency, durability, and sustainability. Whether it’s for solar, wind, battery storage, data centers, utilities, or industrial operations, PTT transformers are tailored to power your success. Our three-phase pad-mounted distribution transformers are available in a wide range of kVA ratings and voltage classes to support large electrical loads and mission-critical infrastructure.

Wide Capacity Range From 500 to 7,500 kVA - Voltage up to 46kV

Pad-Mount Transformers
Flexible Design Options

Advanced Core Technology,
Enhanced Safety Features

High-End Fabrication Quality,
Sustainable Fluid Choices

Why Choose PTT’s Pad-Mount Distribution Power Transformers?

Enhanced Safety: Hot-stick operation and dead-front options protect personnel.
Longer Service Life: Electrostatic shielding reduces transient damage and harmonic disruptions.
Sustainable Solutions: Natural ester fluid options improve fire safety and environmental profile.
Lower Maintenance Costs: Corrosion-resistant tank options, precision welding, and rugged design.
Designed For Multiple Applications: Tailored for solar, wind, battery storage, and high-load data centers.

Padmount Transformer Technical Specifications

kVA ratings engineered to application requirements upto 7500 KVA
Primary voltages up to 46kV
Secondary voltages including 480Y/277V, 208Y/120V, 4160V, and custom designs
Oil-filled or natural ester (FR3) fluid options
Dead-front or live-front construction
Load-break switches and Bay-O-Net fuse protection
CLF in series with Weak Link fuses projection based on design
High-voltage bushings and elbow terminations
Bolted steel tamper-proof enclosure
Pressure relief devices, thermal indicators & safety accessories indicators

Why Engineers Choose PTT Over Large OEM Brands

Engineered-to-order medium voltage padmount transformers
Flexible primary and secondary configurations
Experience in various application for Pad mount design
Customizable switching, accessory and protection packages
U.S.-based manufacturing and support
Faster engineering response

Key Features & Custom Configurations Include

Three-legged, step-lap cores for efficiency
Loop-feed or radial-feed connections
Live or dead front application
Electrostatic shielding to protect sensitive equipment
Robotic welding for leak-free reliability
Corrugated tanks or detachable radiators for long service life
Tamper-proof cabinets with underground connections

Applications for Pad-Mount Distribution Transformers

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Utility distribution systems
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Residential neighborhoods and subdivisions
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Industrial manufacturing plants
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Commercial office parks and retail centers
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Data centers and hyperscale facilities
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Solar power plants and wind farms
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Battery energy storage systems (BESS)

Design & Construction Advantages

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Weatherproof, corrosion-resistant steel enclosure
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Secure, compartmental cabinet construction
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Dead-front safety design for operator protection
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High-performance insulation and cooling systems
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Grounding provisions
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Fire-safe dielectric fluid options
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Long service life in harsh environmental conditions parks and retail centers

World’s Smartest Pad-Mount Transformer Factory – Built for the Future

PRESS RESLEASE:

Pennsylvania Transformer Technology (PTT) is expanding its manufacturing leadership with the construction of a new 150,000-square-foot pad-mount transformer facility in Hoke County, North Carolina — designed to be the world’s smartest distribution transformer factory. This state-of-the-art facility will manufacture medium-voltage pad-mount distribution transformers ranging from 500 kVA to 7,500 kVA and up to 46 kV.

READ PRESS RELEASE

Request a Quote from a Leading Pad-Mount Transformer Producer

If you are evaluating other pad-mounted transformer providers, contact Pennsylvania Transformer Technology to discuss your project specifications. Our engineering team will provide a custom-configured pad-mount distribution transformer solution built for performance, safety, and reliability.

Power You Can Trust — Medium Voltage Three-Phase Pad Mount Transformers ​ 500 kVA to 7,500 kVA