  In the framework of renormalon consideration, a role of the anomalous
dependence of gluon propagator on the scale $\mu$ is shown for a large number
of quark flavours as well as in the nonabelian theory, where the parameter of
the "running" coupling constant evolution has a hidden dependence on the scale.
A phenomenological matching between the modified renormalon and the static
quark potential is described to fix the renormalon scales.
