The current state of electric networks of different pressure is studied. Reliability of work of each element of an air-line of an electricity transmission is analysed. The certain reasons of damage of different elements of air-lines (support, linear isolation, the bases of support, wires, linear armatures, lightning-protective cables). The basic actions for increase of operational reliability of air-lines are offered.
air-lines, reliability of work of networks, a stream of refusals of networksKeywords: energy savings , bulb lamps, luminescent lamps, light-emitting diodes