Step Transformers for Distribution

While distribution transformers mediate between the MV and LV voltage classes, step transformers mediate between two different VoltageGroup values that both lie within the range of the MV voltage class.

Step Transformer Diagram

Unbalanced: Open Delta Transformer

Recommended Configuration

• We model an open delta transformer as a transformer bank that contains two units, each carrying a 2-phase value in the PhasesNormal attribute, such as AB, to indicate the pair of phases connected across the primary winding of each unit.

• The derived phase will be assigned to both transformer units.