Question: 4 . 8 Given the subtransmission system shown in Figure 4 . 2 3 , calculate the currents for faults at ( F _

4.8 Given the subtransmission system shown in Figure 4.23, calculate the currents for faults at \( F_{1}\) and \( F_{2}\) and the relay pickup settings at breakers 3 and 4. Determine which relays must be directional.
Figure 4.23 System diagram for Problem 4.8
4 . 8 Given the subtransmission system shown in

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