The important role in maintenance safe and non-failure operation of power equipment havediagnostics devices for the control of parameters of solid and liquid insulation materials, protection frames of the personnel of the power enterprises. Complex information-diagnostic systems of registration of analogue and digital signals allow to provide viability of electric networks, to analyze development of emergencies, to estimate functioning of devices of relay protection and automatics, to define damage places at short circuits on transmission lines, to define a residual resource of high-voltage switches.
