In relation to system voltage, what is the 'phase to phase' value for a 7200 3-phase system?

In relation to system voltage, what is the 'phase to phase' value for a 7200 3-phase system?

• A. 2400 volt
• B. 240 volt
• C. 7200 volt
• D. 120 volt

Answer: (C)

In a three-phase system, the 'phase to phase' voltage is the voltage measured between any two of the three phases. For a system voltage designated as 7200 volts, this value represents the phase to phase voltage directly. In a three-phase system, the relationship between phase voltage (the voltage measured from each phase to ground) and phase to phase voltage can be described using the following formula: Phase to phase voltage = √3 × Phase voltage. For a 7200-volt system, the phase voltage would be determined by dividing the phase to phase voltage by √3, resulting in approximately 4160 volts for phase to ground. However, the question specifically asks for the phase to phase value, which remains 7200 volts as given. Thus, the correct choice reflects the direct measurement of voltage between two phases in a 7200-volt three-phase system, confirming that the value of 7200 volts is indeed the phase to phase measurement.

In a three-phase system, the 'phase to phase' voltage is the voltage measured between any two of the three phases. For a system voltage designated as 7200 volts, this value represents the phase to phase voltage directly.

In a three-phase system, the relationship between phase voltage (the voltage measured from each phase to ground) and phase to phase voltage can be described using the following formula:

Phase to phase voltage = √3 × Phase voltage.

For a 7200-volt system, the phase voltage would be determined by dividing the phase to phase voltage by √3, resulting in approximately 4160 volts for phase to ground. However, the question specifically asks for the phase to phase value, which remains 7200 volts as given.

Thus, the correct choice reflects the direct measurement of voltage between two phases in a 7200-volt three-phase system, confirming that the value of 7200 volts is indeed the phase to phase measurement.