What type of connection is not concerned with the larger voltage number on a transformer nameplate?

A phase to phase (delta) connection is characterized by the way that transformers are interconnected, primarily regarding load distribution and voltage configurations among different phases. In a delta connection, the transformer windings are connected end-to-end in a closed-loop formation, which allows for power to be distributed across three phases without necessarily being influenced by the larger voltage number indicated on the transformer's nameplate. This is because a delta configuration typically focuses on the line-to-line voltage, which can be higher than the line-to-neutral voltage seen in phase to ground connections.

In contrast, phase to ground connections (which relate to ground stability and safety), dual voltage connections (that involve selecting among different voltage ratios based on the transformer’s tap settings), and single phase connections (which typically deal with a single output voltage) are more directly associated with the voltage ratings specified on a transformer’s nameplate. In these cases, the larger voltage numbers can dictate how the transformer is intended to be utilized in a circuit and impact how connections are managed for safety and efficiency. Therefore, the delta connection is less influenced by the nameplate voltage ratings, focusing instead on the configurations necessary for managing three-phase power effectively.