Samfura
Vacuum interrupter don MV VCB( yumbu harsashi, rated irin ƙarfin lantarki: 7.2kV-12kV)
Takaitaccen bayanin samfurin:
Vacuum interrupter, wanda kuma aka sani da vacuum switch tube, shine ainihin abin da ke canza wutar lantarki mai matsakaicin tsayi.Babban aikin injin katsewa shine sanya matsakaici da babban ƙarfin wutar lantarki da'ira ta yanke wutar lantarki na injin baka mai kashe ɗakin yumbu ta hanyar ingantaccen rufin injin da ke cikin bututu, wanda zai iya kashe baka da sauri kuma ya kashe na yanzu. , ta yadda za a guje wa hadurruka da hadura.
Wurin da'ira mai ƙwanƙwasa yana da babban matsakaicin insulating don bacewar baka idan aka kwatanta da sauran mai watsewar kewaye.Matsin lamba a cikin mai katsewa yana kusan 10-4 torrent kuma a wannan matsa lamba, ƙananan ƙwayoyin cuta suna cikin mai katsewa.Na'ura mai ba da hanya tsakanin hanyoyin sadarwa tana da galibin abubuwa biyu masu ban mamaki.
Ƙarfin insulating: Idan aka kwatanta da sauran kafofin watsa labarai masu rufewa da ake amfani da su a cikin injin da'ira shine mafi girman matsakaicin dielectric.Ya fi duk sauran kafofin watsa labarai sai dai iska da SF6, waɗanda ke aiki da matsa lamba.
Kula
Tsananin sarrafa saurin rufewa da buɗewa na injin kewayawa.
Don injin da'ira mai ɗaukar hoto tare da takamaiman tsari, masana'anta sun ƙayyade mafi kyawun saurin rufewa.Lokacin da saurin rufewar injin da'ira ya yi ƙasa da ƙasa, lalacewa na lamba zai ƙaru saboda tsawaita lokacin raguwa;Lokacin da aka katse na'urar da'ira, lokacin arcing gajere ne, kuma iyakar lokacin harbinsa baya wuce mitar wutar lantarki 1.5 rabin igiyar ruwa.Ana buƙatar cewa lokacin da na yanzu ya ketare sifili a karon farko, ɗakin kashe baka ya kamata ya sami isasshen ƙarfin rufewa.Gabaɗaya, ana sa ran bugun lamba a cikin mitar wutar lantarki rabin igiyar ruwa zai kai 50% - 80% na cikakken bugun jini yayin watsewar kewaye.Don haka, saurin buɗewar na'urar keɓaɓɓiyar ya kamata a kiyaye sosai.Kamar yadda ɗakin da ke kashe baka na vacuum circuit breaker gabaɗaya yana ɗaukar aikin brazing, ƙarfin injinsa ba shi da ƙarfi, kuma juriyar girgiza ba ta da kyau.Maɗaukakin saurin rufewar na'urar da'ira zai haifar da ƙarar girgiza, kuma zai yi tasiri sosai a kan ƙwanƙwasa, yana rage rayuwar sabis na bellows.Don haka, saurin rufewar injin da'ira ana saita shi azaman 0.6 ~ 2m / s.
