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.Isetyenziswa ikakhulu kwinkqubo yokuhanjiswa kwamandla kunye nolawulo lokusasaza, kwaye ikwasetyenziswa kwiinkqubo zokusasaza isinyithi, umgodi, i-petroleum, iikhemikhali, uloliwe, usasazo, unxibelelwano kunye neshishini lokufudumeza okuphezulu. , ukugcinwa kwezinto eziphathekayo, ukuthintela umlilo, ubungqina bokuqhuma, umthamo omncinci, ubomi obude, iindleko zokugcinwa okuphantsi, ukusebenza okuthembekileyo kwaye akukho ngcoliseko.I-vacuum interrupter ihlukaniswe ngokusetyenziswa kwesiphazamisi kunye nokutshintsha komthwalo.I-interrupter ye-circuit breaker isetyenziswa kakhulu kwi-substation kunye nezibonelelo zegridi yamandla kwisebe lamandla ombane.
Qwalasela
Lawula ngokungqongqo isantya sokuvala kunye nokuvula i-vacuum circuit breaker.Ukwenzela i-vacuum circuit breaker kunye nesakhiwo esithile, umenzi uye wachaza isantya 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.
