What are the two angular displacements for Wye transformer banks?

In a Wye transformer bank, the two angular displacements are indeed 0 degrees and 180 degrees. This configuration is essential for achieving balance in the system as it allows for appropriate phase relationships. The 0-degree displacement corresponds to the voltage phase angle of one phase in relation to itself, while the 180-degree displacement indicates a scenario where the opposing phases create a situation of maximum potential difference across the phases, which is crucial for both load balancing and stability in three-phase power systems. This phase relationship enables optimal performance and efficient operation in electrical networks.