Motor Seq Currents Use

[IndianTechEngg1001]

I was going through ETAP Help Files which states,

X0

Zero sequence reactance in percent (machine base); used for calculating short-circuit currents for unbalanced faults.

X2

Negative sequence reactance in percent (machine base); used for harmonic analysis.

Is it right?

 

[ijl]

X2 is needed for unbalanced faults. X0 is needed for unbalanced faults with a connection to earth. See some book in power system analysis.