[en] The paper demonstrates that a longitudinal current in a plasma, which is distributed by the decreased parabola law can considerably affect the configuration characteristics of a three-cut stellarator. In the case of twisting force lines by the longitudinal current, relatively large resonance regions (resonances i=π; i=2π, where i is the total angle of rotational transformation) appear in the vicinity of the rational magnetic surfaces due to reduced shear. Reduced shear and the appearance of a rosette structure may have an adverse effect on the confining properties of the stellarator under current heating condiyions. In the case of untwisting the force lines by the current in the plasma, the angle of rotational transformation in the peripheral part of configurations reduces along with the appearance of rosettes (resonance i=0). This may increase the neoclassical coefficients of transfer and affect the plasma equilibrium in the stellarator. The calculations performed agree with the experimental results obtained on stellarators