In the 3P WYE transformer balanced current equation, what does IL equal?

In the context of a 3-phase WYE (Y) transformer, the relationship between line current (IL) and phase current (IP) is critical for understanding how currents behave in this configuration. In a WYE connection, each phase of the transformer’s windings connects to a neutral point, and the currents through each phase winding are equal to the line currents, maintaining a balanced state.

This means that the line current (IL) is equal to the phase current (IP). Therefore, this is why the statement that IL equals IP is correct. When the transformer operates under balanced conditions, the same current flows through each phase of the transformer. Thus, the understanding of this relationship is fundamental when analyzing WYE transformers in three-phase systems.

The other choices, while they may represent different values or components in the context of a transformer, do not reflect the direct relationship tied to the current flow in a balanced WYE system. EL generally refers to the line voltage, EP to the phase voltage, and the numerical value of 1.732 is related to the square root of 3, which pertains to the calculations of voltages or currents in three-phase systems but does not express the direct current relationship in this specific context.