What type of distribution system is characterized by having 7200 volts in a 3-phase, 3-wire configuration?

The distribution system characterized by having 7200 volts in a 3-phase, 3-wire configuration is known as a Delta system. Delta configuration applies to three-phase electrical systems where the ends of each coil are connected in a triangular formation, creating a closed loop. This configuration allows each phase to handle the same voltage level, which is beneficial for certain types of electrical loads.

In a Delta system, the line voltage is equal to the phase voltage, meaning that there is no neutral point as found in Wye systems. This distinct trident-like setup is optimal for high-power applications, making it widely used in industrial and commercial settings.

The 7200 volts referenced in the question indicates a standard voltage level often employed in distribution systems for medium-voltage applications. The configuration supports balanced loads and delivers power efficiently over long distances, complementing the needs for high-capacity power transfer.

Other configurations, such as Star (or Wye), involve a neutral point and typically have different voltage characteristics. Single-phase systems, on the other hand, only carry one phase and a neutral, operating at lower voltages, which are not suited for the high-voltage context presented in the question.