Transformers and PQI

Looking for improved power quality and top of the line energy efficiency? Look at our variety of transformers from Power Quality International (PQI). You can match the solution to your custom installation project, including the popular Type EY e-Rated® transformers and Type DY and TypeDV Distribution TransFilters™. Browse the full lineup below.

General Purpose Transformers

While we typically advise using our ultra-efficient or harmonic mitigating transformers, we realize general purpose transformers might be acceptable for owners focused solely on cost or for projects involving a mix of transformer types. Our general purpose, Type T transformers meet NEMA TP-1 efficiency requirements, are cost competitive, and are backed by our industry-leading, 10-year warranty.

Specialty / Custom Transformers

For specialty or custom transformers, please contact us.
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Cast Coil Transformers

For installations in harsh or polluted environments, our cast coil transformers offer high-performance, low-maintenance costs, and protection from short circuits, momentary overloads, impulse voltages, and temperature fluctuations.

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Harmonic Mitigating Transformers

PQI has been on the leading edge of harmonic mitigation solutions longer than any other manufacturer in the industry. Our harmonic mitigating transformers are manufactured to the highest quality standards in an ISO 9001 facility, and our product designs have been proven highly effective in real-world scenarios. PQI harmonic mitigating transformers meet or exceed their published efficiencies under the nonlinear load conditions for which they’re designed. For these reasons, many engineers insist upon PQI for the most effective harmonic mitigation solutions.

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Medium Voltage Power Transformers

While we primarily supply transformers less than 600V, our ultra-efficient and harmonic mitigating products are also available at medium voltages.

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Ultra-Efficient Transformers (CSL3, CSL3 Plus, CSL4)

Our Type EY e-Rated® transformers are an easy choice for building owners looking for energy-efficient solutions with exceptional performance, even in lightly loaded settings such as schools and commercial buildings. Because distribution transformer loading is typically in a range between 9% & 17% of their full load rating, we’ve designed our e-Rated® transformers with extremely low Excitation (no-load) Losses. This is achieved with advanced full and step-lap, miter-cut core designs using high quality grain-oriented silicon steel.