[en] Measurements of the electrical properties of perbunan films are reported. The effect of the dipolar relaxation phenomena on the electrical properties is discussed. The temporal current variation is explained in terms of the dipole orientation process. The appearance of a peak in the current-time curves, after the reversal of the applied voltage, is due to the reorientatin of the dipoles. The apparent activation energy, is about 0.82 eV. The mobility of charge carriers is calculated and its activation energy is obtained as 0.30 eV. The mobility and the charge carrier density are influenced by the applied voltage, temperature and film thickness. The simple jump model mechanism operates during the transfer of the charge carriers. (author)