Chapter 24, Problem 28P

The phase sequence for the $\Delta$ - $\Delta$ system in Fig. 24.51 is ABC.

a. Find the angles ${\theta }_2$ and ${\theta }_3$ for the specified phase sequence.

b. Find the voltage across each phase impedance in phasor form.

c. Draw the phasor diagram of the voltages found in part (b), and show that their phasor sum is zero around the close loop of the $\Delta$ load.

d. Find the current through each phase impedance in phasor form.

e. Find the magnitude of the line currents.