breaker:
A circuit breaker inoreva switching device inokwanisa kufambisa, kutakura nekupwanya ikozvino pasi pezvakajairwa mamiriro edunhu, uye kufambisa, kutakura nekupwanya ikozvino pasi pemamiriro edunhu asina kujairika mukati menguva yakatarwa.Circuit breaker akakamurwa kuita high-voltage circuit breakers uye yakaderera-voltage circuit breaker zvichienderana nehupamhi hwekushandiswa, uye miganhu pakati pepamusoro uye yakaderera voltage haina kujeka.Kazhinji inodarika 3kV inodaidzwa kuti high-voltage magetsi midziyo.
Circuit breaker inogona kushandiswa kugovera simba remagetsi, kutanga asynchronous motors zvisingaite, kudzivirira tambo dzemagetsi nemamotor, uye otomatiki kucheka maseketi kana paine zvakanyanya kuwandisa, kupfupika, undervoltage uye kumwe kukanganisa.Basa rayo rakaenzana nekusanganiswa kwefuse switch uye overheat uye underheat relay.Uyezve, kazhinji hazvifanirwe kutsiva zvikamu mushure mekutyora chikanganiso chazvino.Yave kushandiswa zvakafara zvino.
Kugovera kwesimba chinhu chakakosha zvakanyanya muchizvarwa, kutapurirana uye kushandiswa kwemagetsi.Iyo magetsi ekugovera sisitimu inosanganisira ma transformer uye akasiyana akakwira uye akaderera voltage emagetsi emagetsi.Low voltage circuit breakers midziyo yemagetsi ine huwandu hukuru hwekushandisa uye huwandu hwakawanda hwekushandisa.
kushanda musimboti:
A wedunhu breaker anowanzo kuumbwa yekubatanidza system, arc yekudzima system, inoshanda sisitimu, yekuburitsa, uye casing.
Muchiitiko chenguva pfupi, simba remagineti rinogadzirwa neazvino guru (kazhinji 10 kusvika ku12 nguva) rinokunda maitiro ekugadzirisa simba, kusunungurwa kunokwevera nzira yekushanda kuti iite, uye shanduko inofamba pakarepo.Kana yakawandisa, ikozvino inowedzera, chizvarwa chekupisa chinowedzera, uye bimetal deforms kune imwe nhanho yekusimudzira kufamba kwemaitiro (yakawanda ikozvino, ipfupi nguva yekuita).
Kune yemhando yemagetsi, iyo transformer inoshandiswa kuunganidza ukuru hwechikamu chimwe nechimwe chazvino uye kuenzanisa neiyo yakatarwa kukosha.Kana iyo yazvino isina kujairika, iyo microprocessor inotumira chiratidzo kuti iite yemagetsi kuburitsa dhiraivha nzira yekushandisa kuita.
Basa redunhu rinotyora nderekucheka uye kubatanidza dunhu remutoro, kucheka chikanganiso chedunhu, kudzivirira tsaona kubva pakuwedzera, uye kuona kushanda kwakachengeteka.Iyo yepamusoro-voltage circuit breaker inoda kutyora arc ye1500V uye ikozvino ye1500-2000A.Aya ma arcs anogona kutambanudzwa kusvika ku2m uye anoramba achipisa.Naizvozvo, kudzimisa arc idambudziko iro repamusoro-voltage redunhu mabreaker rinofanira kugadzirisa.
Nheyo yekudzima arc inonyanya kutonhodza arc kunetesa kupisa kuparadzaniswa.Kune rumwe rutivi, kuvhuvhuta kwearc kunorebesa arc, kunosimbisa kubatanidzwazve uye kupararira kwezvikamu zvinochajiswa, uye panguva imwechete inofuridza zvidimbu zvinochajiswa mugomba rearc, nekukurumidza kudzorera simba re dielectric.
Low voltage +, inozivikanwawo se otomatiki mhepo switch, inogona kushandiswa kushandura mitoro yemagetsi nekudzima, uye inogona kushandiswa kudzora mota dzinotanga zvisingawanzo.Basa rayo rakaenzana nehuwandu hwechikamu kana ese emabasa ebanga switch, overcurrent relay, voltage kurasikirwa relay, thermal relay uye leakage protector, uye chinhu chakakosha chekudzivirira mumudziyo wakaderera-voltage kugovera network.
Low-voltage circuit breakers ine akawanda ekudzivirira mabasa (yakawandisa, pfupi-circuit, under-voltage dziviriro, nezvimwewo), inogadziriswa chiitiko kukosha, yakakwira yekutyora simba, kushanda kuri nyore, chengetedzo uye zvimwe zvakanaka, saka zvinoshandiswa zvakanyanya.Chimiro uye musimboti wekushanda Iyo yakaderera-voltage yedunhu breaker inoumbwa neanoshanda masisitimu, anobatika, maturusi ekudzivirira (akasiyana kuburitswa), uye arc yekudzima system.
Iwo makuru ekubatika emagetsi emagetsi edunhu anoshandiswa nemaoko kana kuvharwa nemagetsi.Mushure mekunge iwo makuru ekubatika avharwa, iyo yemahara yekufamba michina inokiya makuru ekubatika munzvimbo yakavharwa.Iyo coil yekusunungurwa kwepamusoro uye chinhu chinopisa chekusunungurwa kwekushisa chakabatanidzwa mumutsara nedunhu guru, uye coil ye undervoltage release inobatanidzwa mukuenderana nemagetsi.Kana iyo dunhu iri pfupi-yakatenderedzwa kana yakanyanya kuremerwa, iyo armature yekuburitswa kwepamusoro inodhonzwa mukati, kuitira kuti iyo yemahara yekuburitsa nzira inoshanda, uye iyo huru yekusangana inobvisa dunhu guru.Kana iyo dunhu yaremerwa, iyo inopisa chikamu cheiyo thermal rwendo unit ichapisa, ichikotama bimetal, nekudaro ichisundira nzira yemahara yekufamba kuita.Kana iyo yedunhu iri undervoltage, iyo armature ye undervoltage kuburitswa inoburitswa.Uye iyo yemahara yekufamba michina inobatidzwa zvakare.A parallel trip device inoshandiswa kuremote control.Panguva yekushanda kwakajairika, coil yayo inobviswa-simba.Kana kuremerwa kuri kudiwa, tinya bhatani rekutanga kuti upe simba coil.
Nguva yekutumira: Oct-15-2022