In a Delta System, how are Line Voltage and Phase Voltage related?

In a Delta System, the relationship between line voltage and phase voltage can be understood through the configuration of the delta connection itself. In a delta connection, each phase coil is connected in a loop, forming a closed triangle. The line voltage is actually the voltage measured across two lines, while the phase voltage is the voltage across a single phase coil.

In this configuration, the line voltage is equal to the phase voltage. This means that each phase experiences the same voltage as the line voltage applied across the two lines connected to that phase. Therefore, both measurements yield the same value, establishing a direct relationship between them.

This is a fundamental concept in three-phase systems, and it's critical for calculating loads, analyzing circuit behavior, and ensuring efficiency in electrical distribution. Understanding this relationship helps in correctly sizing transformers, conducting load analysis, and troubleshooting in three-phase circuits.

Other options, such as stating that line voltage is three times or half of phase voltage, or that phase voltage is zero, do not accurately reflect the relationship present in a delta configuration.