What is the potential to ground for L2 in a 480 volts, 3 phase, 3 wire, grounded delta system?
In a 480 volts, 3 phase, 3 wire, grounded delta system, the potential to ground for L2 is the same as the system voltage, which is 480 volts.
Voltage Distribution in a Delta System
Explanation: In a 480 volts, 3 phase, 3 wire, grounded delta system, the potential to ground for L2 is 480 volts. This is due to the distribution of voltage in a delta system. Specifically, each line in a delta system is connected across a single phase, and so the line-to-line voltage and line-to-ground voltage are equal. This may be different in a wye system, but in this instance with a grounded delta system, the voltage to ground on L2, as well as L1 and L3, would all remain at 480 volts.
To understand the concept further, it's important to note that in a delta system, the voltage is distributed in a way that the line-to-line voltage across each phase is equal to the system voltage. This means that the potential to ground for each line, including L2, is the same as the system voltage. The grounding of the delta system ensures that the voltage levels are controlled and balanced.
Delta systems are commonly used in industrial settings where there is a need for high power distribution. The grounded delta configuration provides a stable and reliable distribution system, with an equal potential to ground across all phases. This ensures safety and efficiency in the electrical system.
In conclusion, the potential to ground for L2 in a 480 volts, 3 phase, 3 wire, grounded delta system remains at 480 volts, the same as the system voltage, due to the specific properties of a delta system.