6. A 30 MVA generator with 15% reactance is connected to a bus bar. A 25...

6. A 30 MVA generator with 15% reactance is connected to a bus bar. A 25 MVA transformer with 10% reactance is also connected through a 10% bus bar reactor to the same bus bar. Both of these reactance is based on 25 MVA. If a feeder taken out from the bus bars through a circuit breaker develops a three-phase fault, what should be the appropriate rating of the circuit breaker?

7. A system operates at 220 kVA and 11 kV. Using these quantities as base values, find the base impedance for the system.

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Manojponduru answered 4 months ago

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