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Archive: Category «Medium Voltage»

SF6 gas as insulating and arc-quenching medium

Sulphur hexafluoride gas (SF6) is employed as insulation in all parts of the installation, and in the circuit-breaker also for arc-quenching. SF6 is an electronegative gas, its dielectric strength at… Read more

Jan 06, 2011 | Edvard

Maintenance Of SF6 Gas Circuit Breakers

Sulfur Hexafluoride (SF6) is an excellent gaseous dielectric for high voltage power applications. It has been used extensively in high voltage circuit breakers and other switchgears employed by the power… Read more

Jan 04, 2011 | Edvard

Maintenance Of SF6 Gas Circuit Breakers

Use Of Vacuum As A Breaking Medium

SF6 and vacuum are the two most modern breaking techniques in the fields of Medium Voltage (from 1 to 52 kV) and High Voltage (> 72.5 kV). They appeared in… Read more

Dec 22, 2010 | Edvard

Fig-1 Evolution Of MV Circuit Breaker Markets In Europe

Gas-Insulated Substations – GIS

A gas-insulated substation (GIS) uses a superior dielectric gas, SF6, at moderate pressure for phase-tophase and phase-to-ground insulation. The high voltage conductors, circuit breaker interrupters, switches, current transformers, and voltage… Read more

Nov 10, 2010 | Edvard

Gas-Insulated Substations - GIS