HV/LV substation design,help 1

[T83]

Hello,

I am a fresh graduate and I am faced up with the preliminary phases of a substation design,I am not really going to submit something myself,but still I have myown input.I am looking into a substation design from HV to LV and I would like to know the required equipment for such a design and the way of connecting them. I have a 1500KVA transformer and two backup generators one rated at 500KVA while the other at 60KVA. The 500KVA generator will be operational when the electricity fails out and the 60KVA generator will be operational when they both fail.
I drew a preliminary sketch of my concept so far,can you plz evaluate it,comment on it,& make suggestions on it ?

Drawing:

http://www.4shared.com/file/76516195/d0437c78/HVLV.html

N.B: Symbols from the drawing ATS(Automatic Transfer Swithc),EMDB (Emergency Distribution Board)

Thank you!!!

 

[7anoter4]

 

[T83]

7anoter4 Thank you a lot for your post time and the correction,I really appreciate it !!

Have a nice day !