The effect of temperature and electric field strength on the polarization and dielectric relaxation of the Ba0.85Ca0.15Zr0.1Ti0.9O3 piezoceramic material has been studied. Experimental studies were carried out using the automated information-measuring system developed by the authors. It is based on the modified Sawyer–Tower circuits, which make it possible to measure the hysteresis loops of the polarization dependences on the electric field strength in the ferroelectric phase at different temperatures.