If a delta connected system has balanced phase currents of 600A, what are the approximate line currents?

In a delta-connected system, the relationship between phase currents and line currents is defined by the following principle: the line current is equal to the square root of three (√3) times the phase current. Since you are dealing with balanced phase currents, you can use the formula:

[ I_{line} = I_{phase} \times √3 ]

Given that the balanced phase current is 600 A, the calculation would be:

[ I_{line} = 600 , A \times √3 \approx 600 , A \times 1.732 \approx 1039 , A ]

This result indicates that the approximate line currents in this scenario are indeed around 1039 amperes, confirming the accuracy of the choice. The concept hinges on the phase-line current relationship specific to delta connections, which ensures that when three phase currents of equal magnitude flow through the respective windings, the resulting line current reflects this relationship geometrically.