Hello all!

I am currently working on a protection coordination study and am stuck on a few questions. I have done all required calculations but am struggling with answering the analysis questions.

Georgian T1 (Full load)=875A
Georgian T1 (inrush)=10500A
25X damage (2 sec)=21875A
10X damage (9.5 sec)=8750A
Customer Transformer (Full load)=65.61A
Customer Transformer (inrush)=787.32A
25X damage (2 sec)=1640.25A
10X damage (9.5 sec)=656.1A
Georgian B1 bus fault=10934.66A
Customer T2 HV bushing fault=1250A

For the following cases discuss reliability and selectivity.

-Customer full load
-Faults at the end of the feeder
-Faults at the recloser
-Georgian transformer full load current
-Georgian TS and customer transformer inrush current

Any help with regards to discussing reliability and selectivity in regards to the given information would be greatly appreciated.

 

This is far outside of my areas, but ...
what is a "Georgian transformer"?

 

This is far outside of my areas, but ...
what is a "Georgian transformer"?

It is just an example. Its just a Transformer and Georgian is the location.