Imveliso
Isiphazamisi seVacuum yeMV VCB(iqokobhe leceramic, Umbane olinganisiweyo: 7.2kV-12kV)
Inkcazo emfutshane yemveliso:
Isiphazamisi sevacuum, ekwaziwa ngokuba yityhubhu yokutshintsha ivacuum, lelona candelo lingundoqo lokutshintsha kwamandla ombane aphezulu.Umsebenzi ophambili we-vacuum interrupter kukwenza isekethe ephakathi kunye nephezulu yombane inqumle unikezelo lwamandla egumbi lokucima i-arc ye-arc yokucima iqokobhe le-ceramic ngokusebenzisa i-insulation egqwesileyo ye-vacuum ngaphakathi kwityhubhu, enokucima ngokukhawuleza i-arc kunye nokucinezela okwangoku. , ukuze kuphetshwe iingozi neengozi.
I-vacuum circuit breaker ine-high insulating medium yokuphela kwe-arc xa kuthelekiswa nenye i-breaker circuit.Uxinzelelo ngaphakathi kwe-vacuum interrupter malunga ne-10-4 ye-torrent kwaye kolu xinzelelo, ii-molecules ezimbalwa zikhoyo kwi-interrupter.I-vacuum circuit breaker ineempawu ezimbini ezimangalisayo.
Amandla aphezulu okugquma: Xa kuthelekiswa nezinye izinto ezahlukeneyo zokukhusela ezisetyenziswa kwi-vacuum ye-circuit breaker yi-dielectric medium ephezulu.Kungcono kunawo wonke amanye amajelo ngaphandle komoya kunye ne-SF6, eziqeshwe kuxinzelelo oluphezulu.
Qwalasela
Lawula ngokungqongqo isantya sokuvala kunye nokuvula i-vacuum circuit breaker.
Kwi-vacuum circuit breaker kunye nesakhiwo esithile, umenzi uye wachaza isantya esiphezulu sokuvala.Xa isantya sokuvala i-vacuum circuit breaker siphantsi kakhulu, ukunxiba koqhagamshelwano kuya kwanda ngenxa yokwandiswa kwexesha lokuqhekeka kwangaphambili;Xa i-vacuum circuit breaker inqanyuliwe, ixesha le-arcing lifutshane, kwaye ixesha layo eliphezulu le-arcing alidluli i-1.5 yamandla e-half wave wave.Kudingeka ukuba xa i-current iwela i-zero okokuqala, igumbi lokucima i-arc kufuneka libe namandla okwaneleyo okukhusela.Ngokuqhelekileyo, kulindeleke ukuba i-stroke yoqhagamshelwano kwi-frequency ye-half wave iya kufikelela kwi-50% - 80% ye-stroke epheleleyo ngexesha lokuphulwa kwesekethe.Ngoko ke, isantya sokuvula i-breaker circuit kufuneka silawulwe ngokungqongqo.Njengoko igumbi lokucima i-arc le-vacuum ye-vacuum breaker ngokubanzi lithatha inkqubo yokubrawuza, amandla ayo omatshini akakho phezulu, kwaye ukuxhathisa kwayo kukungcangcazela.Isantya esiphezulu kakhulu sokuvala i-breaker circuit siya kubangela ukungcangcazela okukhulu, kwaye kuya kuba nefuthe elikhulu kwi-bellows, ukunciphisa ubomi benkonzo ye-bellows.Ngoko ke, isantya sokuvala i-vacuum ye-circuit breaker idla ngokusetwa njenge-0.6 ~ 2m / s.
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Isiphazamisi seVacuum yeMV VCB(iqokobhe leceramic, iRa...
