Can someone please help me to understand this problem;
"3 Phase, Y, 6.25KVA, 220V syn. Gen. has reactance of 8.4 ohms/ph. Using rated KVA and voltage as base values, determine per-unit reactance.
I am coming up with 1.08 pu and the solution is 0.627 pu.
Base Voltage=220/Sq Root 3 =127V
Base Current=[6250/3]/127=16.4A
Base reactance=127/16.4=7.744 Ohms
PU reactance = 8.4/7.744 = 1.08pu
Where is the error?
"3 Phase, Y, 6.25KVA, 220V syn. Gen. has reactance of 8.4 ohms/ph. Using rated KVA and voltage as base values, determine per-unit reactance.
I am coming up with 1.08 pu and the solution is 0.627 pu.
Base Voltage=220/Sq Root 3 =127V
Base Current=[6250/3]/127=16.4A
Base reactance=127/16.4=7.744 Ohms
PU reactance = 8.4/7.744 = 1.08pu
Where is the error?