A lub tshuab hluav taws xobyog ib yam khoom siv hluav taws xob uas feem ntau siv hauv AC circuits. Tus qauv siv hluav taws xob feem ntau yog tsim los ntawm kev sib cuag txav tau, kev sib cuag txav tau thiab kev sib cuag zoo li qub. Hauv ib lub voj voog, tus qauv siv hluav taws xob tuaj yeem txiav tawm lub zog fais fab, txuas lub zog fais fab thiab tiv thaiv cov khoom siv hluav taws xob. Raws li nws cov qauv thiab txoj cai ua haujlwm, nws tuaj yeem faib uaib theem hluav taws xob tawg, peb theem hluav taws xob tawg thiabcua circuit breaker. Circuit breaker, ua lub cuab yeej cuam tshuam ntawm lub voj voog tswj thiab lub hwj chim muab hluav taws xob, ua lub luag haujlwm tseem ceeb hauv lub zog fais fab. Thaum lub voj voog overload, luv luv thiab lwm yam kev ua yuam kev, kev tiv thaiv hluav taws xob ua haujlwm raws sijhawm yuav raug txiav tawm, yog li lub voj voog qhib los tiv thaiv kev nyab xeeb ntawm tus kheej thiab khoom vaj khoom tsev thiab lwm yam khoom siv los ntawm kev puas tsuaj. Yog li ntawd,lub tshuab hluav taws xobSiv dav hauv lub zog fais fab kuj hu ua "over-undervoltage protector" lossis "fuse". Ib qho ntawm cov haujlwm tseem ceeb yog txiav tawm lub zog fais fab thaum muaj luv luv.
Lub hauv paus ntsiab lus ntawm kev ua haujlwm
Thaum AC tam sim no hla lub Circuit Court breaker sib cuag, electromagnetic attraction, tsav tsheb qhov kev ua haujlwm ntawm lub tshuab ua haujlwm, yog li ntawd lub Circuit Court breaker tso tawm tripping, yog li txiav lub Circuit Court.
Hauv kev xyaum, lub cuab yeej ncua sijhawm tuaj yeem ntxiv tau kom lub voj voog tsuas yog txiav tawm tom qab ua tiav qhov kev ua haujlwm hloov pauv hauv lub sijhawm teev tseg.
Thaum lub sijhawm luv luv tam sim no hla dhau lub tshuab hluav taws xob, cov hlau ze ntawm qhov sib cuag raug yaj thiab rub tawm los ntawm kev tso tawm thermal vim yog lub zog kinetic arc thiab cua sov heev uas tsim los ntawm kev yaj ntawm qhov sib cuag, yog li txiav tawm tam sim no.
Thaum lub qhov hluav taws xob kaw lossis lub voj voog txuas nrog nws tsis ua haujlwm, lub tshuab hluav taws xob tuaj yeem ua txhaum lub voj voog hauv lub sijhawm luv luv.
Raws li daim ntawv qauv, nws muab faib ua peb hom: ruaj khov, txawb thiab ncua.
Raws li hom kev tso tawm yog muab faib ua phau ntawv thiab hluav taws xob ob daim ntawv.
Raws li lub tshuab ua haujlwm tau muab faib ua ob hom kev sib kis siv txoj siv thiab tsis muaj txoj siv sib kis;
Kev faib tawm
(1)Cov khoom siv hluav taws xobRaws li qhov nruab nrab ntawm arc interrupter, nws muaj peev xwm muab faib ua lub tshuab nqus tsev interrupter chamber (VHV), arc interrupter gate (AVR), vacuum release (VSD) thiab vacuum contactor.
(2) Cov hluav taws xob Circuit Court breaker muaj peb hom: ib theem Circuit Court breaker, peb theem Circuit Court breaker thiab cua Circuit Court breaker.
(3) Cov cua tshuab hluav taws xob tuaj yeem muab faib ua ob hom, AC thiab DC, raws li cov neeg siv thiab qhov chaw siv sib txawv.
(4) Lub tshuab hluav taws xob yuav raug muab tso ua ke nrog lub tshuab cua capacitor, cua inductor thiab lwm yam khoom siv hluav taws xob raws li txoj kev teeb tsa, thiab siv tau ua cov khoom siv hluav taws xob tiv thaiv.
(5) Lawv raug faib ua hom kev tiv thaiv over-current, hom kev tiv thaiv luv luv thiab hom kev tiv thaiv over-under-voltage raws li lawv cov yam ntxwv tiv thaiv.
(6) Muaj 100V series general-purpose cua voltage thiab tam sim no qib raws li lawv cov rated voltage thiab tam sim no tus nqi.
Cov lus qhia tshwj xeeb
Hom Circuit Breaker zoo ib yam li lwm yam khoom siv hluav taws xob, xws li cov lej uas muaj cov ntawv "P", "Y" thiab cov lej rau cov hloov pauv faib khoom, thiab cov lej uas muaj cov ntawv "C" thiab cov lej rau cov hloov riam, thiab lwm yam, tab sis lawv cov haujlwm thiab cov qauv sib txawv thiab feem ntau siv tsis tau rau cov hom phiaj dav dav. Piv txwv li, siv ZF6 thiab ZF14.
2) Rated voltage: hais txog tus nqi ntsuas uas lub Circuit Court breaker tuaj yeem dais nyob rau hauv qhov zaus ntsuas (50Hz) thiab qhov zaus ntsuas (25Hz).
3) Tam sim no ntsuas: hais txog qhov siab tshaj plaws ua haujlwm tam sim no uas lub Circuit Court breaker tuaj yeem tiv taus nyob rau hauv cov xwm txheej tshwj xeeb.
4. "Lub peev xwm tawg" txhais tau hais tias lub tshuab hluav taws xob tuaj yeem txiav tawm AC 50Hz lossis DC 1000V lossis qis dua raws li cov xwm txheej tau teev tseg, thiab lub sijhawm tawg yuav tsum tsis pub tshaj 5ms.
5) Cov yam ntxwv ua tau zoo
Lub hauv paus ntsiab lus ntawm kev xaiv
1. Muab faib ua:
(1) Cov khoom siv hluav taws xob ib theem yog cov uas siv rau kev tiv thaiv cov circuits, motors thiab lwm yam khoom siv hluav taws xob. Lub circuit breaker muaj qhov zoo ntawm kev ua haujlwm tsis tshua muaj thiab yooj yim, tab sis nws yuav tsum txiav tawm lub zog fais fab raws sijhawm thaum cov kab thiab lub cev muaj zog overloaded lossis luv luv-circuited kom tiv thaiv qhov xwm txheej los ntawm kev nthuav dav. Yog li ntawd, lub circuit breaker yuav tsum ua tau raws li qhov yuav tsum tau ua ntawm kev txiav tawm lub zog fais fab hauv lub sijhawm teev tseg, nrog lub sijhawm luv luv, kev xaiv zoo thiab lwm yam.
(2) Lo lus "peb-theem AC qis-voltage circuit breaker" txhais tau hais tias lub circuit breaker siv rau hauv kev tiv thaiv lub cev muaj zog thiab kev tswj hwm circuits, uas muaj tib lub luag haujlwm li ib-theem circuit breaker, tab sis tau ntxiv lub qhov hloov disconnecting rau sab hauv ntawm lub cuab yeej hluav taws xob kom ua tau raws li qhov yuav tsum tau ua rau kev tiv thaiv lub cev muaj zog thiab kev tswj hwm circuits hauv AC circuits. Tsis tas li ntawd, nws kuj muaj overload relay, undervoltage relay thiab xoom sequence current relay.
Lub sijhawm tshaj tawm: Lub Ob Hlis-17-2023