hello all,
I am new to the site so please bear with me,
I'am have some trouble calculating KVA for a replacment 11KV/415V transformer that I suspect to be under rated.

Would I be right in thinking that the fundamental formula (assuming a balanced load)would be V(L-L)*1.732*I(Line current)/1000 ? or will this need to include P.F
where (V*1.732*I*.85)/1000
And is this the system load I would need to consider to correctly select the KVA size?


many thanks in advance!

Last edited by will_87; 03/09/11 01:38 PM.