Umkhiqizo
Isiphazamisi se-vacuum se-MV VCB(igobolondo leceramic, I-voltage elinganiselwe: 7.2kV-12kV)
Incazelo emfushane yomkhiqizo:
Isiphazamisi se-vacuum, esaziwa nangokuthi i-vacuum switch tube, siyingxenye eyinhloko yeswishi yamandla kagesi aphezulu aphakathi nendawo.Umsebenzi oyinhloko wesiphazamisi se-vacuum ukwenza isekethe ye-voltage ephakathi nendawo nephezulu inqamule ukunikezwa kwamandla kwegumbi lokucisha i-arc ye-vacuum yegobolondo le-ceramic ngokusebenzisa ukufakwa okuhle kakhulu kwe-vacuum ngaphakathi kweshubhu, engacisha ngokushesha i-arc futhi icindezele amandla amanje. , ukuze kugwenywe izingozi nezingozi.
I-vacuum circuit breaker ine-insulating medium ephezulu yokushabalala kwe-arc uma kuqhathaniswa nesinye isiqhelisi sesekethe.Ukucindezela ngaphakathi kwesiphazamisi se-vacuum cishe ku-10-4 torrent futhi kulokhu kucindezela, ama-molecule ambalwa kakhulu akhona kusiphazamisi.I-vacuum circuit breaker inezindawo ezimbili ezimangalisayo.
Amandla okuvikela aphezulu: Uma kuqhathaniswa neminye imithombo yezokuxhumana ehlukahlukene esetshenziswa ku-circuit breaker vacuum iyi-dielectric medium ephakeme kakhulu.Ingcono kunayo yonke eminye imithombo yezindaba ngaphandle komoya kanye ne-SF6, eqashwe ngengcindezi ephezulu.
Lalela
Lawula ngokuqinile isivinini sokuvala nokuvula se-vacuum circuit breaker.
Ku-vacuum circuit breaker enesakhiwo esithile, umenzi uchaze isivinini sokuvala esingcono kakhulu.Uma isivinini sokuvala se-vacuum circuit breaker siphansi kakhulu, ukuguga kokuxhumana kuzokhuphuka ngenxa yokwandiswa kwesikhathi sangaphambi kokuhlukana;Lapho i-vacuum circuit breaker inqanyuliwe, isikhathi se-arcing sifushane, futhi isikhathi saso esiphezulu se-arcing asidluli i-1.5 power frequency half wave.Kudingeka ukuthi lapho lamanje liwela uziro okokuqala ngqa, igumbi lokucisha i-arc kufanele libe namandla anele okufakwa ngaphakathi.Ngokuvamile, kulindelekile ukuthi ukushaya kothintana naye ku-wave yesigamu samandla kuzofinyelela ku-50% - 80% we-stroke egcwele ngesikhathi sokuphuka kwesifunda.Ngakho-ke, isivinini sokuvula se-breaker circuit kufanele silawulwe ngokuqinile.Njengoba igumbi lokucisha i-arc le-vacuum circuit breaker ngokuvamile lithatha inqubo yokubhula, amandla ayo okusebenza awaphezulu, futhi ukumelana kwayo nokudlidliza kuphansi.Isivinini esikhulu sokuvala se-circuit breaker sizodala ukudlidliza okukhulu, futhi sizoba nomthelela omkhulu ekuvutheleni, kunciphise impilo yesevisi yokuvunguza.Ngakho-ke, isivinini sokuvala se-vacuum circuit breaker ngokuvamile sisethwa njenge-0.6 ~ 2m / s.
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Isiphazamisi se-vacuum se-MV VCB(igobolondo le-ceramic, i-Ra...
