1. In a certain pint in an electrical system, the available fault current is 12 pu....

1. In a certain pint in an electrical system, the available fault current is 12 pu. Determine the actual fault current using a base power of 100 MVA and a base voltage of 34.5 kV

2. The positive, negative and zero sequence reactances of a 20 MVA, 13.2 kV synchronous generator are 0.3 pu, 0.2 pu and 0.1 pu respectively. The generator is solidly grounded and is not loaded. A line to ground fault occurs on phase a. Neglect all resistances, determine the fault current.

3. A 15 MVA, 34.5 kV/6.24 kV transformer is connected at an infinite bus. The percent impedance of the transformer is 2.5%. What is the current at the 34.5 kV side for a three phase short at the 6.24 kV side?

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Manojponduru answered 1 year ago

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