Kev txheeb xyuas cov ntsiab lus tseem ceeb thiab theem nrab ntawm CT yog qhov tseem ceeb rau kev xaim kom raug thiab kev ua haujlwm nyab xeeb. CT terminals raug cim raws li cov qauv tsim, thiab kev nkag siab txog cov cim no yog qhov tseem ceeb rau kev teeb tsa lossis kev saib xyuas haujlwm.
Thawj qhov kev sib txuas winding feem ntau raug xaiv raws li P1 thiab P2, lossis hloov li K thiab L. Cov kev sib txuas thib ob yog xaiv raws li S1 thiab S2, lossis hloov li k thiab l-. Ntawm ntau CTs, thawj sab tseem raug cim nrog tsab ntawv "H" (H1 thiab H2), thaum lub sab thib ob yog cim nrog tsab ntawv "X" (X1 thiab X2). Ib qho chaw dawb lossis cov cim polarity feem ntau muab tso rau ntawm lub casing los qhia qhov polarity davhlau ya nyob twg-.
Lub cev lub cev ntawm cov terminals txawv ntawm CT hom. Ntawm lub qhov rais - hom lossis los ntawm -core CT, thawj tsis yog lub qhov txhab winding tab sis yog tus neeg xyuas pib uas dhau los ntawm qhov nruab nrab aperture. Lub aperture nws tus kheej yuav raug cim nrog "K-P1" lossis "L-P2" los qhia seb sab twg ntsib qhov chaw thiab qhov twg ntsib lub load-. Cov terminals thib ob yog cov ntsia hlau terminals lossis cov hlau lead txuas ntawm lub cev CT, cim nrog S1 thiab S2 lossis X1 thiab X2.
Lub rooj sib tham polarity yog tias thaum thawj qhov tam sim no nkag mus rau P1 (lossis H1) davhlau ya nyob twg, theem nrab tam sim no tawm ntawm S1 (lossis X1) davhlau ya nyob twg. Qhov no yog lub npe hu ua rho tawm polarity thiab yog tus qauv teeb tsa rau kev ntsuas thiab kev tiv thaiv feem ntau. Yog tias thawj qhov tam sim no nkag mus rau P1 thiab theem nrab tam sim no tawm S2 hloov ntawm S1, CT tau hais tias muaj qhov sib ntxiv polarity, uas feem ntau suav hais tias yog qhov yuam kev uas yuav tsum tau kho-.
Hauv kev xyaum, S1 davhlau ya nyob twg yuav tsum tau txuas nrog lub davhlau ya nyob twg cim k ntawm daim duab hluav taws xob, thiab S2 rau lub davhlau ya nyob twg cim l. Cov kev sib txuas thib ob S1 thiab S2 yuav tsum txuas nrog k thiab l raws li ua ntej. Rau ntau- piv CTs, tej zaum yuav muaj lwm qhov txuas ntxiv xws li S3 thiab S4. Qhov sib piv tsim nyog yog xaiv los ntawm kev sib txuas S2, S3, lossis S4 rau lub davhlau ya nyob twg cim kuv, thiab CT piv yuav tsum raug xaiv kom ze li sai tau rau qhov yuav tsum tau ua. Tsis siv cov kais dej thib ob ntawm ntau- qhov sib piv CTs yuav tsum tau sab laug qhib Circuit Court thaum lub sijhawm ua haujlwm ib txwm.
Thaum txheeb xyuas cov terminals, nco ntsoov xa mus rau CT's nameplate lossis datasheet rau cov qauv tshwj xeeb. Cov tuam txhab sib txawv tuaj yeem siv cov cim sib txawv me ntsis, thiab kev cia siab rau cov kev xav tau tuaj yeem ua rau muaj qhov yuam kev. Yog tias cov cim davhlau ya nyob twg tsis meej lossis tsis pom zoo, siv tus ntsuas txuas txuas ntxiv lossis sab laj nrog cov chaw tsim khoom cov ntaub ntawv ua ntej pib ua haujlwm.