Abstract
The paper defines the notion of charge space whose study is very important for the improvement of the characteristics of the polymeric electroinsulated materials. The latest nondistructive methods used for the determination of ions improvement are described, insisting on the information obtained in polymers by using them. The interfacial phenomena in the mica-epoxide-novolac compound are studied, used as isolation for copper bars in alternative current generators, focussing on the variation of the electrical characteristics of the material with temperature and frequency. Keywords: charge space, electrical characteristics, temperature, frequency