Is it possible to phase transformer banks with dissimilar displacements together under normal conditions?

Phasing transformer banks with dissimilar displacements together under normal conditions is not advisable and typically not done. Transformers are designed to operate at specific phase displacements to ensure that their voltages and currents are properly synchronized. When transformer banks with different phase displacements are connected together, it can lead to issues such as circulating currents, unequal loading, and potential damage to the transformers.

Connecting dissimilar transformers can create a situation where the output voltages do not match up correctly, leading to inefficiencies and increased losses within the electrical system. Additionally, the differences in phase angle can result in harmonic distortion, which may negatively affect the overall power quality.

Under normal operating conditions, it is essential to maintain compatibility among the transformers being connected in order to ensure safe and efficient operation of the electrical system. This is why phasing transformer banks with dissimilar displacements together is not an approved practice.