Delta-Wye transformers, also known as Delta-Star transformers or Delta-Y transformers, are a type of transformer configuration commonly used in electrical power systems. The names “Delta” and “Wye” refer to the connection arrangements of the transformer windings.
Here’s a brief explanation of each configuration:
- Delta (Δ) Connection: In a Delta connection, the three transformer windings are connected in a triangular or delta-shaped arrangement. Each winding’s start is connected to the finish of the next winding, forming a closed-loop. The primary and secondary sides of the Delta transformer are represented by the Greek letter “Δ.”
- Wye (Y) Connection: In a Wye connection, the three transformer windings are connected to form a Y-shaped configuration. One end of each winding is connected together at a common point, known as the neutral or star point. The primary and secondary sides of the Wye transformer are represented by the letter “Y.”
Delta-Wye transformers are widely used in power distribution systems, especially in industrial settings, where three-phase power is prevalent. They allow the efficient transmission of power over long distances and facilitate voltage transformations to meet the requirements of various electrical equipment.