What voltage is used in a 2400 volt 3 phase system?

In a 2400 volt 3-phase system, the specified voltage is indeed 2400 volts. This figure indicates the line-to-line voltage, which is the voltage measured between any two of the three phase conductors.

In a typical 3-phase power system, the voltage can be expressed in several ways, including line-to-line and line-to-neutral. In this case, since the question specifies "2400 volt," it directly corresponds to the nominal system voltage. Understanding this helps clarify that the system is designed to operate effectively at this specific voltage level, allowing for appropriate equipment selection, safety measures, and operational standards.

The other options present different voltages that do not align with the defined voltage of the 3-phase system in question. Each of these options might refer to other systems or configurations but do not accurately reflect the nominal operating voltage for a 2400 volt 3-phase setup.