In a 3P DELTA Transformer, what is the relationship between EL and EP?

In a 3P DELTA Transformer configuration, the relationship between the line voltage (EL) and the phase voltage (EP) indicates how voltages relate within the transformer. In this setup, the line voltage is the same as the phase voltage because the phases are connected in a way that each phase contributes fully to the line voltage.

In a delta configuration, the voltage across each winding is equal to the voltage appearing between the conductors feeding the load. Therefore, as there are no transformations occurring between the line and phase voltages in this particular setup, it stands that EL equals EP.

This fundamental principle is essential for understanding the operational characteristics of delta transformers in three-phase systems. It ensures that when analyzing circuit behavior, calculations involving line and phase voltages can directly use the same value.