SF6 roj yog 5.135 lub sij hawm hnyav dua huab cua, thiab nws qhov kub kub yog -60℃ntawm ib qho chaw. Hauv qab 150 degree, SF6 nthuav tawm cov tshuaj inertness zoo heev thiab tsis hnov tsw tshuaj nrog cov hlau, yas, thiab lwm yam khoom siv feem ntau siv hauv Circuit Court breakers. Thaum nws decomposes rau hauv ntau yam nyob rau hauv qhov kub thiab txias tshwm sim los ntawm ib tug siab - fais fab arc, nws recombines nyob rau hauv ib tug luv luv lub sij hawm tom qab lub arc extinguishes. SF6 tsis muaj cov pa roj carbon thiab tsis muaj cua, yog li tiv thaiv kev sib cuag oxidation. SF6 muaj lub zog dielectric siab heev, uas nce siab. Ntawm ib qho chaw, lub zog dielectric ntawm SF6 yog kwv yees li 2 mus rau 3 npaug ntawm huab cua. Ntawm qhov siab kawg ntawm 3 cua, lub zog dielectric ntawm SF6 tuaj yeem ncav cuag lossis tshaj li cov roj siv feem ntau siv. SF6 muaj qhov zoo tshaj plaws arc- tua kev ua haujlwm; nyob rau hauv ib qho yooj yim interrupting arc-extinguishing chamber, nws arc-extinguishing muaj peev xwm yog 100 npaug ntau dua ntawm huab cua. Nyob rau hauv SF6, thaum lub arc tam sim no nyob ze rau xoom, muaj ib tug heev kub tsuas yog nyob rau hauv lub me me txoj kab uas hla ntawm lub arc kem, surrounded los ntawm ib tug uas tsis yog-conductive txheej. Nyob rau hauv txoj kev no, lub zog dielectric ntawm qhov sib txawv arc yuav rov qab sai sai tom qab tam sim no hla xoom.
- Lub zog dielectric siab (kwv yees li 8 mus rau 9 npaug ntawm huab cua ntawm 5 bar).
- Nws yog inherently tsis zoo them, ntxiab dawb electrons los ua hnyav ions nrog tsawg zog, yog li tiv thaiv avalanche tawg.
- Zoo thermal conductivity, siab ionization zog, thiab qis dissociation kub ua rau arc zoo heev -quenching kev ua tau zoo.
- Nws nthuav tawm cov conductivity siab heev ntawm qhov kub thiab txias, ua kom pom qhov tsis tshua muaj hluav taws xob arc. Nws tsis muaj xim, tsis muaj ntxhiab, tsis muaj zog, thiab tsis yog - lom.
- Qee qhov tsis zoo ntawm SF6 roj yog nws tus nqi siab, nws nyiam tsim cov hlau fluorides thaum lub sij hawm arc tawm, thiab nws cov xwm txheej zoo li lub tsev cog khoom roj.
Lub Circuit Court breaker uas siv sulfur hexafluoride (SF6) gas li ob qho tib si arc -quenching thiab insulating nruab nrab. Nws yog abbreviated li SF6 Circuit Court breaker. Kev siv sulfur hexafluoride ua ib qho arc -quenching nruab nrab hauv Circuit Court breakers pib thaum ntxov 1950s. Vim muaj cov khoom zoo ntawm cov roj no, qhov voltage thiab tam sim no tsis tau ntawm ib zaug - tawg SF6 Circuit Court breaker yog siab dua li cov compressed cua Circuit Court breakers thiab roj- txwv Circuit Court breakers, thiab nws tsis tas yuav tsum tau roj siab los yog ib tug ntau ntawm series so. Hauv xyoo 1960 thiab 1970s, SF6 Circuit Court breakers tau siv dav hauv ultra{15}siab voltage, siab{16}} muaj peev xwm fais fab. Los ntawm thaum ntxov 1980s, SF6 Circuit Court breakers nrog 363 kV ib zaug - tawg, 550 kV ob - tawg, thiab ntsuas qhov hluav taws xob tawg ntawm 80 thiab 100 kA tau ua tiav tiav.
