The system of uninterrupted electric power supply, beside composition of which enter to 16, the included in parallel, converters of voltage of stabilizing (ПНС) down the output power 720 W, or 1800 W, the device of control- control (УКУ) and the block of commutation, is intended for the nourishment of the urban and toll offices of large numerical capacity and the transit units, whose energy consumption taking into account the charge of storage batteries and [redundatsii] of rectifiers (redundancy Of n+[kh]) can reach 28,8 kW.

The block of the commutation of electric power supply system includes three tires (one of them it is the external tire of users and storage batteries, two of others - internal: the tire of the outputs of rectifiers [PNS] and the tire of the automatic switches, which ensure the commutation of stress and overload protection past the current of both the storage batteries, and the basic load), and also the pay besides telemetry, which makes it possible to remotely transfer signals about the emergencies before the power-supply system, and to the 2nd pays of control by the magnetic starters, intended for the protection of storage batteries from the deep discharge.