Parameters of induction motor from p.u to actual value
The resistances and inductances of a 3-phase induction motor are normally the values of the per-phase equivalent circuit. The inductances used in the equivalent circuit are normally given is ohms as the reactances at the nominal frequency. The per phase equivalent circuit is the line-to neutral circuit for a wye connected motor regardless of the actual connection of the motor. If the motor is actually delta connected, the equivalent wye circuit is analyzed. A version of the standard equivalent circuit is shown in my answer to this question: Why does an induction motor draw more current when the load is increased?
The 1 per-unit inductance and reactance in ohms is the nominal line to neutral voltage divided by the nominal line current. For the data given in the question the base resistance or reactance in ohms is 231/350 = 0.66 ohms. That would make Rs = 0.66 * .11 = 0.0073 ohms. I believe that Rs is the equivalent circuit stator resistance. That would be the actual winding resistance for a wye connected motor. For a delta connected motor, the winding resistance would be 3 times that. The terminal resistance would be twice that in either case.