Percent Impedance
Percent Impedance
(OP)
Question on determining maximum short circuit current. Three single phase 100KVA transformers, 2.9% impedance,2.7% impedance and 2.1% impedance, connected 13.2kV to 4.16kV Y-Y. How do you determine the percent impedance for the bank in order to determine the maximum available fault current?
Thanks.
Thanks.






RE: Percent Impedance
For exact figures, you would do a short circuit test, like it is done a unit at the factory to determine it %Z.
Rafiq Bulsara
http://www.srengineersct.com