Custom Three-Phase Transformers, Delta or Wye

Three-phase transformers move real power. They are what sits between the service and the plant floor — converting 480 V to 240 or 208 V for distribution panels, deriving a neutral where the supply has none, or isolating a drive line-up from the rest of the building. The configuration matters as much as the rating: delta-wye, wye-delta, delta-delta, and wye-wye each behave differently with respect to grounding, harmonics, and phase shift.

We wind three-phase units in delta and wye, in isolation, step-up/step-down, and autotransformer construction, from a few kVA up to 750 kVA, at 50, 60, or 400 Hz. Tell us the primary, the secondary, the connection you need, and where it has to fit — our engineers spec the rest for free, and every unit is individually tested before it ships.