Answer Posted / biswaranjan das
Transformers Are Rated In Kva Because Generally There Are Two Losses In A Transformer I.e Core/iron Loss & copper Loss Due To Transformer Is A Stready Device So Their Is No Loss Of Mechanical . Due To the Core Losses Depends upon Voltage(v) & copper Losses Depends Upon Current(A) So The total Losses Depends Upon VA I.e KVA .
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234 MVA Generator 3 phase Short circuit current Values required? Gen set Rating-234 MVA, Gen Voltage-18kv, PF;0.8, Xdv:23.5 %, Transformer Rating-18/380KV, 680MVA,Yndd1 two winding, Step up TR, ZT:35.50 %,X/R 4.33 Gen CB Position, CB open ,Disconnected open, Generator Running Voltage 18 Kv, Bi mistakes generator side earth switch Closed during that time short circuit current level in 3 Phase required, and how to test on site 234MVA Generator Short circuit current,
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