What type of transformer connection involves connecting X1 of one transformer to X2 of another?

The type of transformer connection that involves connecting the X1 terminal of one transformer to the X2 terminal of another transformer is known as the delta connection. In a delta connection, the transformers are arranged in a triangular configuration where each phase is connected to two other phases. This configuration allows for three-phase systems to maintain the same voltage level across each transformer, providing additional benefits such as balanced load distribution and improved efficiency in handling varying loads.

Moreover, in a delta connection, the line voltage equals the phase voltage, which is advantageous in many industrial applications. This configuration also allows for phase shifts that can be beneficial for certain types of loads, making it a popular choice in three-phase systems.

Understanding transformer connections is crucial for ensuring that electrical systems operate efficiently and reliably. The delta configuration's unique approach to interconnecting transformers makes it significant in both practical applications and theoretical studies within electrical engineering.