In a delta system, how do winding voltage and line voltage compare?

In a delta system, the comparison between winding voltage and line voltage reveals that they are, in fact, the same. This is due to the configuration of the wiring. In a delta configuration, each of the three windings is connected end-to-end in such a way that they form a closed loop, creating a triangle shape. The line voltage, which refers to the voltage measured across the lines supplying the system, is directly equal to the voltage across each of the windings.

This relationship holds because, in a delta connection, each line feeds into two winding terminals simultaneously. As a result, the full line voltage appears across each individual winding. This characteristic is a key feature of the delta connection and distinguishes it from other configurations, such as the star (or wye) configuration, where winding voltage is lower than line voltage.

Understanding this relationship is crucial for those working with three-phase systems, as it impacts calculations for power, current, and voltage in electrical systems.