Calculation of short-circuit currents in the system HV, including some minimum cross-section of conductors
ATTENTION - instead of a decimal comma should be used decimal DOT !
Input values
Nominal power of transformer
S
tr
=
MVA
Sekundární napětí transformátoru (sdruľené)
U
sek
=
35 kV
23 kV
22 kV
21 kV
10,5 kV
Short-circuit voltage of transformer
u
k
=
%
c=
1.1
1.0
Reactance of lines
X
v
=
ohm/km
Maximum operating temperature of conductor
t
1
=
°C
Maximum operating temperature of conductor in the short-circuit
t
k
=
°C