Short Circuit value - ETAP shows the same value for subtransient and steady-state

[eemamedo]

Good day,

When I did the short circuit simulation for 1-phase SC fault (L-G), I got the same result for subtransient and steady-state values. For the 3-phase, those values are different. Can someone explain why those values are the same for 1-phase SC fault? Thanks

 

[Bugman1400]

Good day,

When I did the short circuit simulation for 1-phase SC fault (L-G), I got the same result for subtransient and steady-state values. For the 3-phase, those values are different. Can someone explain why those values are the same for 1-phase SC fault? Thanks

Most programs don't have X"d and Xd zero seq impedances......only for pos seq.