Ybus   
 
  - 22.888889i    5.952381i     0             0             7.9365079i  
    5.952381i   - 13.888889i    7.9365079i    0             0           
    0             7.9365079i  - 23.174603i    2.9761905i    4.7619048i  
    0             0             2.9761905i  - 6.9444444i    3.968254i   
    7.9365079i    0             4.7619048i    3.968254i   - 16.666667i  
 
 Zbus   
 
    0.0792966i    0.0557999i    0.0381774i    0.0511283i    0.0608415i  
    0.0557999i    0.1338419i    0.0663734i    0.0630432i    0.0605455i  
    0.0381774i    0.0663734i    0.0875205i    0.0719793i    0.0603235i  
    0.0511283i    0.0630432i    0.0719793i    0.2320893i    0.1001717i  
    0.0608415i    0.0605455i    0.0603235i    0.1001717i    0.1300578i  
 
 The subtransient current in a three-phase fault on bus 4 in per unit is   
 
  - 4.3086871i  
 
 Voltages at bus 3 and 5 repectively in per unit   
 
    0.5683915  
 
    0.6898635  
 
 Currents to fault from bus 3 in per unit   
 
  - 2.0531653i  
 
 Currents to fault from bus 5 in per unit   
 
  - 2.2555218i  
 
 Total current to fault in per unit   
 
  - 4.3086871i