Lub qhov hluav taws xob hluav taws xob hluav taws xob yog qhov hloov pauv uas tuaj yeem ua haujlwm tau thaum lub xau tam sim no hauv Circuit Court tshaj li tus nqi tau teev tseg. Feem ntau siv lub ntiaj teb to Circuit Court breakers tau muab faib ua ob hom: hom hluav taws xob thiab hom tam sim no, thiab hom tam sim no muab faib ua ob hom: electromagnetic hom thiab hluav taws xob hom. Voltage to Circuit Court breaker yog siv nyob rau hauv low-voltage power grids qhov twg qhov nruab nrab point ntawm transformer tsis grounded. Nws tus yam ntxwv yog tias thaum ib tug neeg tau txais hluav taws xob poob siab, qhov hluav taws xob kuj tshwm sim ntawm cov kab nruab nrab thiab hauv av, ua rau lub relay ua haujlwm thiab lub zog hloov mus rau qhov chaw. Tam sim no to Circuit Court breakers feem ntau yog siv nyob rau hauv low-voltage tis systems uas qhov nruab nrab point ntawm lub transformer yog grounded. Nws tus yam ntxwv yog tias thaum ib tug neeg tau txais hluav taws xob poob siab, qhov hluav taws xob xau tau pom los ntawm xoom-sequence tam sim no transformer, ua rau lub relay ua haujlwm thiab lub hwj chim hloov mus rau disconnect.
Hauv qab no, tus editor ntawm Industrial Electrical Appliances Network yuav qhia rau koj txog ob qhov txhaum uas tau ntsib thaum siv cov hluav taws xob hluav taws xob thiab lawv cov kev daws teeb meem. Cov ntsiab lus yog raws li nram no:
Qhov txhaum 1. Lub qhov hluav taws xob hluav taws xob tau poob qis tom qab nws tau muab tso rau hauv kev ua haujlwm.
(1) Cov kab hluav taws xob peb-theem, suav nrog cov kab nruab nrab, tsis txhob dhau los ntawm xoom sequence tam sim no transformer nyob rau hauv tib txoj kev. Tsuas yog kho cov kab hluav taws xob.
(2) Yog hais tias lub Circuit Court nrog lub to Circuit Court breaker ntsia thiab lub Circuit Court uas tsis muaj qhov to Circuit Court breaker yog hluav taws xob txuas, cia li cais ob lub circuits.
(3) Muaj ib qho hluav taws kub thiab ib qho av loads nyob rau hauv kab, tsuas yog tshem tawm xws li loads.
(4) Cov kab nruab nrab ua haujlwm dhau los ntawm xoom-ib theem tam sim no transformer tau rov qab grounding, thiab rov qab grounding yuav tsum raug tshem tawm.
(5) Lub tshuab hluav taws xob xa hluav taws xob nws tus kheej yog qhov tsis raug thiab yuav tsum tau hloov.
Fault 2. Cov hluav taws xob hluav taws xob tawg ua haujlwm tsis zoo thaum lub sijhawm ua haujlwm.
(1) Ua los ntawm overvoltage. Piv txwv li, thaum muaj kev khiav hauj lwm overvoltage tshwm sim nyob rau hauv txoj kab ua rau lub Circuit Court breaker ua hauj lwm, koj muaj peev xwm xaiv ib tug ncua sij hawm los yog impulse voltage tsis ua hauj lwm to Circuit Court breaker, los yog nruab ib tug resistive-capacitance nqus Circuit Court ntawm cov neeg mus suppress lub overvoltage, los yog koj muaj peev xwm Ib tug overvoltage absorption ntaus ntawv yog ntsia rau hauv kab.
(2) Electromagnetic cuam tshuam. Yog tias muaj cov khoom siv hlau nplaum los yog cov khoom siv hluav taws xob muaj zog khiav los yog nres nyob ze, qhov kev teeb tsa ntawm lub qhov hluav taws xob hluav taws xob yuav tsum raug kho kom nyob deb ntawm cov khoom siv hluav taws xob.
(3) Kev cuam tshuam. Yog hais tias ob transformers ua hauj lwm nyob rau hauv parallel, txhua tus muaj nws tus kheej grounding. Txij li thaum lub impedances ntawm ob lub transformers tsis tuaj yeem sib npaug tag nrho, qhov no yuav tsim cov khoom siv hluav taws xob hauv av, ua rau lub tshuab hluav taws xob ua haujlwm. Tsuas yog tshem tawm ib txoj hlua hauv av. Tsis tas li ntawd, tib lub transformer muab lub zog rau tib lub thauj khoom los ntawm ob lub voj voog sib luag, thiab cov dej ntws hauv ob lub voj voog tsis tuaj yeem zoo ib yam, lossis cov khoom siv tam sim no tuaj yeem tshwm sim. Yog li ntawd, ob lub voj voog yuav tsum tau ua haujlwm sib cais.
(4) Lub rwb thaiv tsev tsis kam ntawm cov kab ua haujlwm nruab nrab raug txo qis. Thaum lub rwb thaiv tsev ntawm kev ua haujlwm nruab nrab yog txo qis, yog tias peb-theem load tsis sib npaug, qhov kev ua haujlwm loj heev yuav tshwm sim ntawm cov kab nruab nrab thiab ntws mus rau lwm cov ceg hauv av, kom cov dej ntws tawm tuaj yeem tshwm sim ntawm txhua qhov xau. Circuit Court breaker. , ua rau lub Circuit Court breaker malfunction.
(5) Cov av tsis raug. Yog hais tias cov kab nruab nrab yog grounded ntau zaus, nws yuav ua rau cov hluav taws xob hluav taws xob tsis zoo.
(6) Kev cuam tshuam ntawm overload lossis luv luv Circuit Court. Yog tias qhov hluav taws xob hluav taws xob hluav taws xob muaj kev tiv thaiv luv luv thiab kev tiv thaiv dhau tam sim no tib lub sijhawm, kev ua haujlwm tsis zoo yuav tshwm sim thaum lub teeb tam sim no ntawm kev tiv thaiv overcurrent tripper tsis tsim nyog. Lub sijhawm no, tsuas yog kho tus nqi tam sim no.