Cov tshuab hluav taws xob tsawg tsawg muaj nyob rau hauv cov tsev lag luam, cov chaw tsim khoom, thiab cov chaw nyob. CTs hauv cov tshuab no feem ntau yog siv rau sub- ntsuas, ntsuas kev thauj khoom, thiab kev tswj xyuas hluav taws xob. Kev xaiv feem ntau yooj yim dua li qhov nruab nrab -voltage switchgear, tab sis qhov tseeb, lub nra, qhov sib piv, thiab kev teeb tsa tseem yuav tsum tau ua tib zoo saib xyuas.
Thawj kauj ruam yog los txiav txim siab lub feeder tam sim no. CT piv yuav tsum tau xaiv kom cov khoom ib txwm poob rau hauv qhov tsim nyog, feem ntau yog 60-80% ntawm qhov kev ntsuas thawj. Piv txwv li, lub feeder nrog ib txwm load ntawm 200 A yuav siv 250/5 A lossis 300/5 A CT. Yog hais tias lub load yuav tsum loj hlob, ib tug me ntsis loj piv tej zaum yuav tsim nyog, tab sis oversizing yuav tsum tau zam vim hais tias nws txo qhov raug ntawm cov tsis tshua muaj tam sim no.
Hom CT nyob ntawm qhov kev teeb tsa. Split-core CTs yog nrov rau retrofits vim tias lawv tuaj yeem ntsia tau yam tsis muaj kev cuam tshuam cov cables. Thaiv- hom CTs yog siv qhov chaw txwv. Cable - hom CTs yog haum rau ib tug neeg cables, thaum busbar - hom CTs yog siv rau busbar feeders. Lub qhov rais CT yuav tsum haum rau cable lossis busbar.
Cov chav kawm raug nyob ntawm daim ntawv thov. Rau kev saib xyuas dav dav, chav kawm 1.0 lossis 0.5 feem ntau txaus. Rau kev ntsuas lub zog, chav kawm 0.5S lossis 0.2S yuav tsum tau. Lub nra CT yuav tsum phim lub ntsuas lossis ntsuas ntsuas. Ntev cable khiav tuaj yeem ua rau lub nra hnyav, yog li cov neeg siv loj dua yuav xav tau.
Kev ruaj ntseg installation yog ib qho tseem ceeb. Lub CT yuav tsum tau nruab nrog qhov tseeb polarity thiab grounding. Secondary Circuit Court yuav tsum tsis txhob qhib nyob rau hauv load. Hauv qis-voltage systems, tshwj xeeb yuav tsum tau them nyiaj rau rwb thaiv tsev thiab kev tiv thaiv txhua yam. Lub CT yuav tsum tau mounted ruaj ntseg thiab deb ntawm qhov chaw kub.
Kev ntsuam xyuas thiab kev ua haujlwm yuav tsum txheeb xyuas qhov sib piv, polarity, thiab kev nyeem ntawv. Lub ntsuas yuav tsum tau programmed nrog qhov tseeb CT piv. Yog tias kev nyeem ntawv tsis raug, xyuas qhov polarity, lub nra, thiab kev xaim.
Hauv cov ntsiab lus, xaiv qhov tsis tshua muaj hluav taws xob faib CT los ntawm kev suav cov load, xaiv tus qauv tsim nyog, xaiv hom zoo, phim qhov tseeb thiab lub nra, thiab ua kom muaj kev nyab xeeb. Ib qhov zoo - xaiv CT yuav muab kev saib xyuas raug thiab txhawb nqa kev tswj hwm lub zog.