Kev yuav ib lub CT PT xeem lub rooj zaum tsis zoo li xaiv ib lub multimeter tawm ntawm lub txee. Qhov kev txiav txim siab ncaj qha rau yam koj sim, pes tsawg units koj ua, thiab cov qauv twg koj lav ris rau. Nov yog dab tsi los saib yav dhau los daim ntawv qhia glossy.
Ua ntej, txhais koj lub hnab ntawv voltage thiab tam sim no. Ib lub rooj ntev zaum saum toj kawg nkaus ntawm 1000 V tso zis thiab 20 Ib qho kev txhaj tshuaj thib ob yuav them rau kev faib tawm -chav kawm CTs thiab PTs ntsuas txog 33 kV, tab sis nws yuav tsis kov 132 kV kis tau tus mob-chav kawm CT nrog 1 A theem nrab thiab lub hauv caug taw tes saum 2000 V. Rau ntau yam kev hloov pauv ntawm 2000 V. metering-chav kawm 0.2S CTs mus txog kev tiv thaiv-chav kawm 5P20 units ntawm 245 kV - nrhiav lub kaw lus uas xa tawm yam tsawg kawg 2500 V excitation voltage thiab mus txog 1000 A thawj txhaj tshuaj, nrog automated kais hloov mus rau multi{{20.}ratio transformers
Cov chav kawm raug yog qhov tsis yog -negotiable spec. Lub rooj ntev zaum nws tus kheej yuav tsum yog qhov kev txiav txim siab zoo dua li cov cuab yeej hauv kev sim. Yog tias koj tab tom ntsuas qhov ntsuas 0.2S CT, qhov ntsuas qhov ntsuas xav tau ± 0.05 feem pua qhov tseeb ntawm qhov piv thiab theem. Ib lub rooj ntev zaum ntsuas ntawm ± 0.1 feem pua yuav saib zoo ntawm daim ntawv spec, tab sis thaum koj tau lees paub cov nyiaj tau los - qib transformers qhov twg qhov yuam kev 0.1 feem pua txog ntau txhiab daus las hauv kev xa nqi dhau ib xyoos, cov paj laum tsis txaus.
Automation tseem ceeb tshaj li cov neeg yuav khoom feem ntau paub. Lub rooj ntev zaum uas ua raws li qhov sib piv, polarity, excitation, winding resistance, rwb thaiv tsev, thiab lub nra hnyav kuaj yam tsis muaj kev cuam tshuam tus neeg teb xov tooj hloov 20-feeb- tauj ib- txheej txheem ntawm chav tsev mus rau tsib feeb automated khiav. Rau lub calibration lab ua 30 transformers ib hnub twg, qhov sib txawv ntawm ib tug ua hauj lwm thiab ob. Saib rau cov ntawv tshaj tawm digital nrog kev tsis siv neeg hla / tsis ua haujlwm tawm tsam IEC 61869 lossis IEEE C57.13 txwv, USB lossis Ethernet cov ntaub ntawv xa tawm, thiab muaj peev xwm khaws cov ntaub ntawv nyoos rau kev sib piv.
Portability piv rau taag installation splits lub lag luam. Lub rooj zaum qhov hnyav ntawm 30 txog 50 kg haum rau kev teeb tsa mus tas li. Teb-portable CT PT analyzers nyob rau hauv 8 mus rau 15 kg ntau npog ntawm - site commissioning thiab teeb meem, tab sis lawv feem ntau txi cov zis voltage thiab tam sim no ntau yam. Txoj hauv kev zoo tshaj plaws rau cov tuam txhab kev pabcuam feem ntau yog ib lub siab - kawg lub rooj zaum rau lub chaw kuaj mob thiab ib lub chaw nqa khoom nqa tau rau lub tsheb.