Transformers | Manufacturing & Service | Southwest Electric Co.

Designed for starting large motors, this device detects and responds to voltage drops. The soft starter incorporates a vacuum contactor and timing circuits for auto bypass of the reactor after the motor achieves full speed, and features a tap switch to match the reactance to the application.

Some applications call for a standard transformer, while others require a custom solution. Our transformer team can work with you to identify the exact specifications you need, and we have the expertise and experience to customize your transformer when necessary. Available custom features include:

Multi-Tap Transformers (FACT® Series)

Our FACT® (full amp capacity transformers) series is a broad line of single-phase and three-phase distribution-style transformers. They are primarily designed for the rigorous duties of down-hole submersible pumps, surface pumps, and variable speed drive applications.

Single-Phase Transformers:  Single-phase step-down FACT® transformers are available with single primary voltages (FACT® 125) or dual primary voltages (FACT® 225).

Three-Phase Transformers: Our FACT® III series are three-phase step-up designs with a 480 V primary voltage.

Phase-Shifting Transformers

Our phase-shifting transformers convert three-phase utility voltage to provide the 12, 18 or 24 (or higher) pulses required to feed modern multi-pulse variable frequency drives (VFDs). By using a multi-pulse VFD, you can reduce the need for expensive harmonic filters. Our phase-shifting transformers come in a variety of models to match the size of the VFD and the FACT® multi-tap transformer connected to its output.

Poly-Auto Transformer: A 12-pulse phase-shifting transformer, this polygon auto transformer is designed to supply a 12-pulse motor drive, and reduces the need for expensive harmonic filters.

18- and 24-pulse models: We also offer 18-pulse and 24-pulse phase-shifting transformers (and higher) as custom designs. Contact us for more information.