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- Sulfur_hexafluoride_circuit_breaker abstract "High-voltage circuit breakers have greatly changed since they were first introduced in the mid-1950s, and several interrupting principles have been developed that have contributed successively to a large reduction of the operating energy. These breakers are available for indoor or outdoor applications, the latter being in the form of breaker poles housed in ceramic insulators mounted on a structure.Current interruption in a high-voltage circuit breaker is obtained by separating two contacts in a medium, such as sulfur hexafluoride (SF6), having excellent dielectric and arc-quenching properties. After contact separation, current is carried through an arc and is interrupted when this arc is cooled by a gas blast of sufficient intensity.The sulfur hexaflouride gas (SF6) is an electronegative gas and has a strong tendency to absorb free electrons. The contacts of the breaker are opened in a high pressure flow of sulphur hexaflouride gas and an arc is struck between them. The gas capture the conducting free electrons in the arc to form relatively immobile negative ions. This loss of conducting electrons in the arc quickly builds up enough insulation strength to extinguish the arc.A gas blast applied to the arc must be able to cool it rapidly so that gas temperature between the contacts is reduced from 20,000 K to less than 2000 K in a few hundred microseconds, so that it is able to withstand the transient recovery voltage that is applied across the contacts after current interruption. Sulfur hexafluoride is generally used in present high-voltage circuit breakers at rated voltage higher than 52 kV.Into the 1980s, the pressure necessary to blast the arc was generated mostly by gas heating using arc energy. It is now possible to use low-energy spring-loaded mechanisms to drive high-voltage circuit breakers up to 800 kV.".
- Sulfur_hexafluoride_circuit_breaker thumbnail Circuit_Breaker_115_kV.jpg?width=300.
- Sulfur_hexafluoride_circuit_breaker wikiPageID "23765719".
- Sulfur_hexafluoride_circuit_breaker wikiPageLength "16004".
- Sulfur_hexafluoride_circuit_breaker wikiPageOutDegree "21".
- Sulfur_hexafluoride_circuit_breaker wikiPageRevisionID "669608773".
- Sulfur_hexafluoride_circuit_breaker wikiPageWikiLink AEG.
- Sulfur_hexafluoride_circuit_breaker wikiPageWikiLink CIGRÉ_-_International_Council_on_Large_Electric_Systems.
- Sulfur_hexafluoride_circuit_breaker wikiPageWikiLink Category:Switches.
- Sulfur_hexafluoride_circuit_breaker wikiPageWikiLink Circuit_breaker.
- Sulfur_hexafluoride_circuit_breaker wikiPageWikiLink Dielectric.
- Sulfur_hexafluoride_circuit_breaker wikiPageWikiLink Electronegativity.
- Sulfur_hexafluoride_circuit_breaker wikiPageWikiLink Intergovernmental_Panel_on_Climate_Change.
- Sulfur_hexafluoride_circuit_breaker wikiPageWikiLink International_Council_on_Large_Electric_Systems.
- Sulfur_hexafluoride_circuit_breaker wikiPageWikiLink Megapascal.
- Sulfur_hexafluoride_circuit_breaker wikiPageWikiLink Pascal_(unit).
- Sulfur_hexafluoride_circuit_breaker wikiPageWikiLink Spring-loaded.
- Sulfur_hexafluoride_circuit_breaker wikiPageWikiLink Spring_(device).
- Sulfur_hexafluoride_circuit_breaker wikiPageWikiLink Sulfur_hexafluoride.
- Sulfur_hexafluoride_circuit_breaker wikiPageWikiLink Switchgear.
- Sulfur_hexafluoride_circuit_breaker wikiPageWikiLink Transient_recovery_voltage.
- Sulfur_hexafluoride_circuit_breaker wikiPageWikiLink Westinghouse_Electric_(1886).
- Sulfur_hexafluoride_circuit_breaker wikiPageWikiLink File:Circuit_Breaker_115_kV.jpg.
- Sulfur_hexafluoride_circuit_breaker wikiPageWikiLink File:Disjoncteur-autosoufflage.jpg.
- Sulfur_hexafluoride_circuit_breaker wikiPageWikiLink File:Disjoncteur-selfblast.svg.
- Sulfur_hexafluoride_circuit_breaker wikiPageWikiLink File:Disjoncteur_HT-fig5.svg.
- Sulfur_hexafluoride_circuit_breaker wikiPageWikiLink File:GCB.jpg.
- Sulfur_hexafluoride_circuit_breaker wikiPageWikiLink File:Gas_circuit_breaker_operation_1.jpg.
- Sulfur_hexafluoride_circuit_breaker wikiPageWikiLinkText "Generator circuit-breaker".
- Sulfur_hexafluoride_circuit_breaker wikiPageWikiLinkText "Sulfur hexafluoride circuit breaker".
- Sulfur_hexafluoride_circuit_breaker wikiPageWikiLinkText "circuit breaker".
- Sulfur_hexafluoride_circuit_breaker wikiPageWikiLinkText "gas-insulated switchgear".
- Sulfur_hexafluoride_circuit_breaker wikiPageWikiLinkText "sulfur hexafluoride circuit breaker".
- Sulfur_hexafluoride_circuit_breaker hasPhotoCollection Sulfur_hexafluoride_circuit_breaker.
- Sulfur_hexafluoride_circuit_breaker wikiPageUsesTemplate Template:Main.
- Sulfur_hexafluoride_circuit_breaker wikiPageUsesTemplate Template:Refimprove.
- Sulfur_hexafluoride_circuit_breaker wikiPageUsesTemplate Template:Reflist.
- Sulfur_hexafluoride_circuit_breaker wikiPageUsesTemplate Template:When.
- Sulfur_hexafluoride_circuit_breaker subject Category:Switches.
- Sulfur_hexafluoride_circuit_breaker type Article.
- Sulfur_hexafluoride_circuit_breaker type Article.
- Sulfur_hexafluoride_circuit_breaker type Component.
- Sulfur_hexafluoride_circuit_breaker type Switch.
- Sulfur_hexafluoride_circuit_breaker comment "High-voltage circuit breakers have greatly changed since they were first introduced in the mid-1950s, and several interrupting principles have been developed that have contributed successively to a large reduction of the operating energy.".
- Sulfur_hexafluoride_circuit_breaker label "Sulfur hexafluoride circuit breaker".
- Sulfur_hexafluoride_circuit_breaker sameAs Selbstblasschalter.
- Sulfur_hexafluoride_circuit_breaker sameAs SF6_διακόπτες_υψηλής_τάσεως.
- Sulfur_hexafluoride_circuit_breaker sameAs ガス遮断器.
- Sulfur_hexafluoride_circuit_breaker sameAs m.06zp7tt.
- Sulfur_hexafluoride_circuit_breaker sameAs Элегазовый_силовой_выключатель.
- Sulfur_hexafluoride_circuit_breaker sameAs Q1228904.
- Sulfur_hexafluoride_circuit_breaker sameAs Q1228904.
- Sulfur_hexafluoride_circuit_breaker wasDerivedFrom Sulfur_hexafluoride_circuit_breaker?oldid=669608773.
- Sulfur_hexafluoride_circuit_breaker depiction Circuit_Breaker_115_kV.jpg.
- Sulfur_hexafluoride_circuit_breaker isPrimaryTopicOf Sulfur_hexafluoride_circuit_breaker.