In this investigation, a mathematical model for saturated synchronous machines including the effects of both the crossmagnetizing phenomenon and the saturation factors has been used. The effects of the omission of the cross-magnetizing phenomenon from this model on the transient characteristic curves of a saturated synchronous machine under a three-phase short circuit such as the armature, field and damper winding currents, the flux linkages, the electromagnetic torque and the load angle curves, are shown.