Russian vacuum circuit breakers for electrical networks
- Tavrida Electric Ltd., Moscow (Russian Federation)
- Elwest Ltd., Ekaterinburg (Russian Federation); and others
Development of vacuum interrupters (VI) and vacuum circuit breakers (VCB) was started in the USSR under the guidance of V. Granovsky in the All-Union Electrotechnical Institute and then continued by his colleagues and scholars in different scientific and industrial establishments. They conducted a series of physical investigations of near-electrode vacuum arc areas growth dynamics with high spatial and temporal resolutions in magnetic fields of various configurations; investigations of vacuum break-down initialization mechanisms at constant and pulse voltages and of the electrical strength recovery dynamics for various parameters of the switched circuit; analysis of erosion of different metals, alloys and composite materials, the influence of their mechanical, electro- and thermo-physical properties on the dynamic and temperature stability of contact systems; studies of new features of switching based on synchronous switch-off; as well as developed highly reliable drives. All this resulted in contact systems design optimization and development of Russian VI and VCB for voltages up to 110 kV and switching currents up to 31.5 kA, and unique short-circuiting switches. At present vacuum contactors, compact VCB for switching currents up to 20 kA at 10 kV that weight less than 30 kg, and VCB for switching currents up to 31.5 kA at 6-110 kV widely used in electrical distribution networks are being produced in Russia. The total production output of vacuum contactors for the voltages up to 1200 V is about 1000 pieces per year, VCB for voltages up to 10 kV - about 6000 pieces/year and VCB for 35-110 kV - about 600 pieces/year. VCB are being mostly employed in rural and urban distribution networks, in transport, in the oil-gas, metallurgy and mining industries of Russia.
- OSTI ID:
- 441566
- Report Number(s):
- CONF-960723-; TRN: 96:006574-0039
- Resource Relation:
- Conference: 17. international symposium on discharges and electrical insulation in vacuum, Berkeley, CA (United States), 21-26 Jul 1996; Other Information: PBD: 1996; Related Information: Is Part Of XVIIth international symposium on discharges and electrical insulation in vacuum. Volume 1 and 2; PB: 1139 p.
- Country of Publication:
- United States
- Language:
- English
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