HIGH-VOLTAGE ELECTRIC WIRE Russian patent published in 1995 - IPC

FIELD: electrical engineering. SUBSTANCE: high voltage electric wire is intended for transmission of power to long distances. Two multicore wires of large cross-sections are enclosed in two flexible sheaths and are laid in side reinforced-concrete pipe coated with hydraulic insulation put into trench. Each sheath is composed of two concentric layers of glass cloth. In case of leak of compressed gas through inner sheath outer sheath swells and closes signal wire generating signal to operator on duty at station on necessity to conduct repair operations. Monorail is laid in lower part of reinforced-concrete pipe for movement of two-wheel electromobile with repair equipment and expert in repair of electric wires. There are envisaged in electric wire device for cooling and pumping of compressed gas from sheath of one wire into sheath of the other, automatic device monitoring air temperature in reinforced-concrete pipe and for blowing of atmospheric air through reinforced-concrete pipe and exhaust system. EFFECT: enhanced operational safety and reliability. 4 cl, 8 dwg