Switchgear yog tag nrho cov khoom siv hluav taws xob faib hluav taws xob siv hauv lub tshuab hluav taws xob kom tau txais, faib, thiab tswj hluav taws xob hluav taws xob. Nws yog dav siv nyob rau hauv fais fab nroj tsuag, substations, industrial qhauj, thiab coj mus muag tsev fais fab faib tes hauj lwm. Raws li kev sib koom ua ke ntawm cov khoom siv tseem ceeb thiab cov kev tswj hwm theem nrab, switchgear, los ntawm nws cov kev teeb tsa hauv Circuit Court breakers, disconnectors, load keyboards, fuses, thiab relay tiv thaiv cov cuab yeej, paub txog kev hloov, kev tiv thaiv, thiab kev saib xyuas ntawm circuits, thiab yog ib qho tseem ceeb ntawm cov khoom siv los xyuas kom muaj kev nyab xeeb thiab ruaj khov ntawm lub zog hluav taws xob.
Functionally, lub luag haujlwm tseem ceeb ntawm switchgear yog lub zog faib hluav taws xob thiab kev tiv thaiv hluav taws xob. Cov kab khoom xa tuaj yog lub luag haujlwm rau kev qhia lub zog sab nraud rau hauv qhov kev faib khoom; feeder txee faib lub hwj chim rau cov loads ntawm txhua ceg; tsheb npav khi cov khoom paub txog kev sib txuas ntawm cov busbars sib txawv thiab kev hloov ntawm lub zog thaub qab; thiab metering txee thiab PT txee feem ua tiav kev ntsuas hluav taws xob thiab ntsuas hluav taws xob. Hauv thawj lub voj voog, lub Circuit Court breaker ua haujlwm ntawm kev hloov pauv ib txwm thiab cuam tshuam tam sim no. Nws arc-kev tua muaj peev xwm thiab qhib / kaw nrawm ncaj qha cuam tshuam rau kev nyab xeeb. Disconnecting keyboards muab qhov tseeb hluav taws xob cais tawm, ua kom muaj kev nyab xeeb ntawm tus kheej ntawm cov neeg ua haujlwm tu. Cov khoom siv tiv thaiv hluav taws xob xws li fuses thiab cov khoom siv tiv thaiv relay tuaj yeem ua haujlwm sai thaum muaj kev sib tsoo, luv luv Circuit Court, thiab hauv av txhaum, txwv tsis pub muaj kev sib tsoo.
Structureally, switchgear feem ntau muab faib ua ob pawg: tsau thiab tshem tau (lub laub- hom). Cov qauv ruaj khov kho cov khoom tseem ceeb hauv lub txee, ua rau cov qauv yooj yim thiab tus nqi qis, tsim nyog rau cov ntawv thov nrog cov khoom ruaj khov thiab tsis tshua muaj txij nkawm. Cov txheej txheem rho tawm tau mount Circuit Court breakers lossis contactors ntawm lub laub txav tau, tso cai rau lawv rub tawm ntawm lub txee thaum lub sijhawm tu, tsim kom muaj qhov sib cais kom pom tseeb thiab txhim kho kev lag luam kev ntseeg siab thiab kev saib xyuas yooj yim. Raws li kev ua haujlwm ib puag ncig, lawv tuaj yeem muab faib ua hom sab hauv tsev thiab sab nraum zoov. Cov hom sab nraum zoov muaj kev xav tau siab dua nyob rau hauv cov ntsiab lus ntawm kev tiv thaiv qib, sealing, thiab huab cua tsis kam hloov mus rau cua, nag, plua plav, thiab kub hloov pauv.
Nyob rau hauv cov nqe lus ntawm technology thiab cov qauv, niaj hnub switchgear nyhav rau miniaturization, txawj ntse, thiab siab ntseeg. Kev siv dav dav ntawm lub tshuab nqus tsev thiab SF₆ Circuit Court breakers tau ua kom muaj peev xwm tawg tau zoo thiab arc - tua kev ua haujlwm thaum txo cov haujlwm ua haujlwm. Intelligent switchgear integrates microprocessor tiv thaiv, saib xyuas raws li txoj cai, thiab kev sib txuas lus interfaces, ua kom muaj tseeb - lub sij hawm uploading ntawm tam sim no, voltage, hloov txoj cai, thiab cov ntaub ntawv txhaum. Nws txhawb kev saib xyuas tej thaj chaw deb thiab kev tswj tsis siv neeg, nteg lub hauv paus rau kev faib hluav taws xob ntse thiab kev ua haujlwm tsis siv neeg. Kev tsim khoom thiab kev tshuaj xyuas yuav tsum ua raws li cov qauv nruj rau kev sib koom ua ke ntawm rwb thaiv tsev, qhov kub thiab txias tsis kam, thiab luv luv - Circuit Court muaj peev xwm tiv taus kom muaj kev nyab xeeb nyob rau hauv cov xwm txheej hnyav.
Raws li ib qho tseem ceeb ntawm lub zog faib hluav taws xob, switchgear tsis tsuas yog txhim kho qhov hloov pauv thiab kev ntseeg siab ntawm lub zog faib hluav taws xob, tab sis kuj tseem ua lub luag haujlwm tsis tuaj yeem ua kom muaj kev nyab xeeb ntawm tus kheej, txo qis hluav taws xob poob, thiab txhim kho kev ua haujlwm zoo. Nrog rau kev nce qib ntawm cov phiajcim ntse thiab kev sib koom ua ke ntawm cov khoom siv hluav taws xob tshiab, cov haujlwm ntawm switchgear yuav txhim kho ntxiv mus rau kev qhia thiab kev sib koom ua ke, muab kev txhawb nqa zoo rau kev tsim kom muaj kev nyab xeeb, muaj txiaj ntsig, thiab ntsuab niaj hnub hluav taws xob faib hluav taws xob network.