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(Solved): 4. Refer to Figure 6.2(a). The transformer is 1000 (a) One-line diagram of an electrical system ...
4. Refer to Figure 6.2(a). The transformer is 1000
(a) One-line diagram of an electrical system
kVA, its impedance is \( 5.75 \% \), the primary feeder impedance is \( 0.75 \% \), and the secondary voltage is \( 480 \mathrm{Y} / 277 \mathrm{~V} \). Calculate the short-circuit current on the secondary of the transformer under threephase bolted fault conditions.
Expert Answer
Given data Power rating of transformer Impedance of transformer Impedance of primary feeder Voltage at secondary of transfor