SolaHD DT631H175S

Drive Isolation Transformers facilitate the magnetic isolation of the incoming line from motor drives in SCR (Silicon Control Rectifier) variable speed applications. They are essential for matching the voltage requirements of the SCR drive. The typical configuration includes a delta primary with a wye secondary, aligning with the prevalent power sources used in three-phase rectifier circuits.

This specific model operates with a primary voltage of 460 ∆ or 575 ∆, and secondary voltages of 266 or 133 Vac, depending on the configuration. The transformers are rated for a kVA range of 7.5 to 440 kVA and can accommodate drive horsepower from 5 to 400. The input voltage range spans 460-575 Vac, and the output voltage varies from 133 to 460 Vac. The design incorporates aluminum windings and is rated for a temperature rise of +150°C, ensuring reliable performance in demanding environments.