  A three-dimensional lattice of the Josephson junctions with a finite
self-conductance is employed to model the ceramic superconductors. By Monte
Carlo simulations it is shown that the chiral glass phase is stable in three
dimensions even under the influence of screening. The nonlinear ac
susceptibility and the compensation effect are also studied. The compensation
effect is shown to be due to the existence of the chiral glass phase. In
agreement with experiments, this effect is demonstrated to be present in the
ceramic superconductors which show the paramagnetic Meissner effect.
