Cuaj hlis 13, 2021, Txheeb xyuas txoj haujlwm ua haujlwm ntawmbox-type circuit breakers
Circuit Court breakers feem ntau yog tsim los ntawm kev sib cuag, arc extinguishing system, kev khiav hauj lwm mechanism, mus txawv tebchaws unit, plhaub thiab lwm yam.
Thaum ib qho luv luv Circuit Court tshwm sim, lub magnetic teb generated los ntawm ib tug loj tam sim no (feem ntau 10 mus rau 12 lub sij hawm) overcomes cov tshuaj tiv thaiv quab yuam caij nplooj ntoos hlav, lub mus txawv tebchaws unit rub lub khiav hauj lwm mechanism, thiab lub hloov instantaneously mus txawv tebchaws.Thaum overloaded, qhov tam sim no loj dua, lub tshav kub tiam nce, thiab cov bimetal deforms mus rau ib tug tej yam uas yuav thawb lub mechanism txav (qhov loj dua qhov tam sim no, lub sij hawm ua hauj lwm luv dua).
Muaj ib hom hluav taws xob uas siv lub tshuab hloov pauv los sau cov tam sim no ntawm txhua theem thiab muab piv nrog cov nqi teev.Thaum qhov tam sim no txawv txav, microprocessor xa cov teeb liab los ua kom lub tshuab hluav taws xob mus ncig ua haujlwm tsav lub tshuab ua haujlwm.
Lub luag haujlwm ntawm lub Circuit Court breaker yog txiav tawm thiab txuas lub load Circuit Court, nrog rau kev txiav tawm ntawm qhov txhaum Circuit Court, tiv thaiv kev nthuav dav ntawm kev sib tsoo thiab ua kom muaj kev nyab xeeb.Lub high-voltage Circuit Court breaker yuav tsum tau tawg 1500V, tam sim no 1500-2000A arc, cov arcs tuaj yeem ncav cuag 2m thiab tseem kub hnyiab tsis tau tua.Yog li ntawd, arc extinguishing yog ib qho teeb meem uas yuav tsum tau daws los ntawm high-voltage circuit breakers.
Lub hauv paus ntsiab lus ntawm arc tshuab thiab arc extinguishing yog tsuas yog kom txias lub arc kom tsis muaj zog thermal dissociation.Ntawm qhov tod tes, lub arc yog ncab los ntawm arc kom ntxiv dag zog rau cov recombination thiab diffusion ntawm cov khoom them, thiab tib lub sij hawm, cov khoom them nqi hauv qhov sib txawv arc raug cua tshuab kom sai sai rov qab lub zog dielectric ntawm nruab nrab.
Tsawg-voltage Circuit Court breakers tseem hu ua lub tshuab hluav taws xob tsis siv neeg, uas tuaj yeem siv los txuas thiab tawg lub voj voog, thiab tseem tuaj yeem siv los tswj cov motors uas pib tsis tshua muaj.Nws txoj haujlwm yog sib npaug rau cov lej ntawm qee qhov lossis tag nrho cov haujlwm ntawm riam hloov, overcurrent relays, voltage poob relays, thermal relays thiab leakage protectors.Nws yog ib qho tseem ceeb tiv thaiv cov khoom siv hluav taws xob hauv cov khoom siv hluav taws xob tsawg.
Tsawg-voltage Circuit Court breakers muaj ntau yam kev tiv thaiv kev ua haujlwm (overload, luv luv Circuit Court, tiv thaiv undervoltage, thiab lwm yam), adjustable nqis nqis, siab tawg peev xwm, yooj yim lag luam, kev nyab xeeb, thiab lwm yam., yog li lawv tau dav siv.Lub hauv paus ntsiab lus thiab kev ua haujlwm Lub tshuab hluav taws xob qis hluav taws xob yog tsim los ntawm kev ua haujlwm, kev sib cuag, kev tiv thaiv cov khoom siv (ntau qhov tso tawm), arc extinguishing system, thiab lwm yam.
Lub ntsiab tiv tauj ntawm qhov hluav taws xob hluav taws xob qis hluav taws xob yog manually ua los yog hluav taws xob kaw.Tom qab qhov kev sib cuag tseem ceeb raug kaw, qhov kev mus ncig dawb mechanism kaw qhov kev sib cuag tseem ceeb hauv txoj haujlwm kaw.Lub kauj ntawm lub overcurrent tso tawm thiab lub thermal caij ntawm lub thermal tso tawm yog txuas nrog nyob rau hauv series nrog lub ntsiab Circuit Court, thiab lub kauj ntawm lub undervoltage tso tawm yog txuas nrog nyob rau hauv parallel nrog lub hwj chim mov.Thaum lub Circuit Court luv luv los yog overloaded hnyav, armature ntawm overcurrent tso tawm rub, ua rau lub free tripping mechanism ua hauj lwm, thiab lub ntsiab kev sib cuag disconnects lub ntsiab Circuit Court.Thaum lub Circuit Court yog overloaded, lub cua sov lub caij ntawm lub thermal mus txawv tebchaws unit yuav khoov lub bimetal thiab thawb lub free mus txawv tebchaws mechanism txav.Thaum lub voj voog qis dua, lub armature ntawm qhov kev tso tawm qis dua raug tso tawm.Lub free mus txawv tebchaws mechanism kuj qhib.Lub shunt tso tawm yog siv rau cov chaw taws teeb tswj.Thaum lub sijhawm ua haujlwm ib txwm, nws cov kauj raug txiav tawm.Thaum yuav tsum tau tswj kev deb, nias lub pob pib kom muaj zog lub kauj.
Post lub sij hawm: Sep-13-2021
