The three-phase transformer connected to the generator described in Prob. 1 0.2 is rated 100 M…

The three-phase transformer connected to the generator described in Prob. 1 0.2 is rated 100 M YA, 240Y /18∆ kY, X = 1 0%. If a three-phase short circuit occurs on the high-voltage side of the transformer at rated voltage and no load, find (a) the initial symmetrical rms current in the transformer windings on the high-voltage side and (b) the initial symmetrical rms current in the line on the low-voltage side. Prob. 1 0.2 A generator connected through a 5-cycle circuit breaker to a transformer is rated is operating a t no load and rated voltage when a three-phase short circuit occurs ” between the breaker and the transformer. Find (a) the sustained short-circuit current in the breaker, (b) the initial symmetrical rms current in the breaker, and (c) the maximum possible dc component of the short-circuit current in the breaker.    

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