we have three transformers 4MVA, 6MVA & 6MVA , 3.3/11.4KV vector group Ydn 11, impedance is 7.0 %. we want run all transformer in parallel for export power to national Grid, what about neutral wire?

1. we ground neutral of all transformers

2. use NGR?

and what your suggestion?

 

Ali... can you send a simple sketch or Single-Line Diagram?

Phil Corso (cepsicon [at] aol [dot] com)

 

Dear,

i have mail you single line, my question is what is the coordination of neutral earthing?

regards, Ali

 

Ali... thank you for the SLD. I have sent you an e-mail requesting additional information.

In the interim, my answers to both of your questions are, Yes! Details will follow.

Regards, Phil Corso

 

Ali... I have sent an e-mail requesting additional information.

In the interim, my answer to each of your questions is, YES! However, there are specific restraints!

Regards, Phil Corso