The paper present the methods used in recent years in the national power grid to operate more efficiently as high voltage equipment. It includes shares of minor maintenance and operation undertaken by our company for management installations. It also briefly describes the results of applying new technologies and the technical analysis performed using such technical data. As part of asset management technologies have been applied without withdrawal from service of installations, allowing transmission of electricity at full capacity. In applied technologies for minor maintenance remember inspections multispectral spectra in visual, infrared, ultraviolet and laser and live working technologies. Within the operation of equipment were used more management applications databases, which were subsequently used in technical analysis. Also in the operation were used methods of online analysis for operational behavior of equipment. It presents the results of a comparative analysis of the costs of the technologies for minor and corrective maintenance without redraw from service of equipment and exploitation of modern equipment versus traditional technologies Some conclusions are presented at the end, much like their own recommendations for more efficient operating of equipment.