Ntsuas cov txheej txheem ntawm tam sim no transformer (CT)

Kev thauj mus los Omicron CT-Analyzer ua haujlwm zoo siab, piv txwv, thiab polarity checks ntawm tam sim no transformers nrog kev siv ntawm qhov voltage-kev sib piv txoj kev. Tam sim no transformers tuaj yeem raug sim hauv lawv cov khoom siv, xws li tsim hauv transformers, roj Circuit Court breakers, lossis switchgear. Nws yog qhov tseem ceeb rau cov cuab yeej yuav tsum tau cais tawm ntawm cov khoom siv hluav taws xob ua ntej kev sim.
Polarity Test
Txuas nrog lub siab voltage winding, cov txheej txheem siv yuav raug ua los ntawm kev hloov ntawm DC tam sim no muab luv luv. Lub polarity tuaj yeem kuaj xyuas ntawm lub polarized voltmeter, txuas mus rau theem nrab winding (tsawg voltage sab). Lub voltmeter yuav tsum tau calibrated kom zoo tias qhov deflection yog lawm.
Feem ntau, ib qho kev sib sau resistor yog siv hauv Circuit Court los tiv thaiv qhov ntsuas. Yog hais tias lub polarity ntawm lub transformer yog lawm, lub deflection yuav tsum nyob rau hauv lub vaj huam sib luag thaum lub DC tam sim no hloov.
Saturation Test
Ntsuas qhov excitation voltage thiab excitation tam sim no uas cuam tshuam raws li qhov hluav taws xob siv rau CT hauv qab xeem nce. Raws li CT hauv qab qhov kev sim pib saturate, ib qho loj loj ua rau hnub no yuav raug kuaj pom qhov me me hauv qhov hluav taws xob. Nrog rau qhov kev ntsuam xyuas no, lub magnetization nkhaus thiab magnetization zoo yuav raug lees paub. Kev kuaj saturation yuav tsum tau ua ua ntej tshaj qhov piv tau saib thiab tom qab kuaj polarity, pom tias cov hlau nplaum seem tshuav nyob rau hauv cov tub ntxhais vim qhov kev xeem DC (polarity, tsis kam), uas ua rau muaj qhov yuam kev ntxiv hauv qhov kev xeem piv.
Ratio Test
Kev kuaj xyuas piv yog ua los ntawm kev ntsuas qhov ntsuas hluav taws xob siv los ntawm kev sib txuas thib ob mus rau qhov txuas ntxiv uas tsim los ntawm qhov tseem ceeb winding. Piv txwv li, yog tias 1 volt ib flip yog siv rau qhov thib ob winding, qhov voltage uas twb muaj lawm ntawm qhov tseem ceeb winding yuav yog 1 volt. Tshwj xeeb tshaj yog, yog tias 120V tau siv rau theem nrab ntawm 600/5 tam sim no transformer (120: 1 piv), 1V yuav tsum tam sim no ntawm
thawj winding