Answer Question 1: Show work. The phase fault calculations at all buses. The short circuit for Bus A is given.

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Answer Question 1:
Show work.
The phase fault calculations at all buses. The short circuit forBus A is given.

Answer Question 1 Show Work The Phase Fault Calculations At All Buses The Short Circuit For Bus A Is Given 1 (34.75 KiB) Viewed 32 times

For the system shown in the Figure, carry out the following calculations: 1. Three phase fault calculations at all buses. The short circuit for Bus A is given. 2. Currents for normal operation 3. Calculations of CTs 4. The settings of the phase instantaneous units 5. The, pick-up and time dial settings for time delayed units in order to guarantee a co-ordinated protection system, allowing a time discrimination margin of 0.4 s. Icc 30 5900 A Dy B 115 KV X 9 110/13.2 kV 41.75 MVA Z%=9,8 115/34.5 kV 31.45 MVA Z%=9.8 D X 1 10 MVA X6 *4 Dy Dy X2 X8 20 MVA A 11.2 km J0.625 02/km X7 20-115 during 115/34.5 kV 31.245 MVA Z%=10 115 KV 34.5 kV X3 20MVA 10 50 MVA