Yuav Siv Li Cas Clamp Meter
Lub hauv paus ntsiab lus ntawm leakage clamp ammeter:
Cov dej ntws tam sim no clamp meter yog tsim los ntawm impedance hloov dua siab tshiab, hloov pauv ntau yam, AC-DC hloov dua siab tshiab, kev nthuav dav, qhia cov cuab yeej thiab lwm yam. Qee tus kuj muaj kev tiv thaiv overcurrent, suab thiab lub teeb ceeb toom Circuit Court thiab ntsuas qhov ntsuas hluav taws xob hloov kho, thiab cov cuab yeej qhia tau muab faib ua ob hom: hom analog thiab hom digital. Raws li UL tus qauv hauv Teb Chaws Asmeskas, cov dej xau yog qhov tam sim no uas tuaj yeem ua los ntawm cov khoom siv hauv tsev, suav nrog cov khoom siv hluav taws xob sib txuas. Cov dej ntws tam sim no suav nrog ob ntu, ib feem yog qhov kev coj ua tam sim no I1 los ntawm kev tiv thaiv kev tiv thaiv; Lwm qhov yog qhov hloov pauv tam sim no I2 los ntawm kev faib cov peev txheej, lub peev xwm tom kawg yog XC =1 / 2pfc, uas yog qhov sib txawv ntawm lub zog zaus, thiab qhov kev faib tawm tam sim no nce nrog zaus thiab nce, yog li cov leakage tam sim no nce nrog lub zog zaus. Piv txwv li: lub hwj chim mov nrog thyristor, nws cov harmonic tivthaiv yuav ua rau kom cov xau tam sim no.
Yog hais tias qhov kev ua tau zoo ntawm rwb thaiv tsev ntawm ib lub voj voog lossis lub kaw lus raug ntsuas, qhov tam sim no yuav tsum suav tag nrho cov dej ntws mus rau hauv av (lossis cov khoom siv hluav taws xob sab nraud) los ntawm cov khoom siv insulating, nrog rau cov khoom siv hluav taws xob hauv Circuit Court lossis qhov system (Distributed capacitance) tuaj yeem suav tau tias yog lub tshuab hluav taws xob capacitive) thiab tam sim no ntws mus rau hauv lub ntiaj teb. Kev xaim ntev dua yuav tsim lub peev xwm loj dua thiab ua kom cov dej xau tam sim no, uas yuav tsum tau them nyiaj tshwj xeeb rau hauv cov tshuab tsis muaj av.
Kev ceev faj rau Leakage Clamp Meter:
1. Lub hauv paus ntsiab lus ntawm kev ntsuas qhov dej ntws tam sim no yog qhov tseem ceeb tib yam li cov rwb thaiv tsev tiv thaiv. Kev ntsuas rwb thaiv tsev tiv thaiv yog qhov ua tau zoo ntawm cov xau tam sim no, tab sis nws tau qhia nyob rau hauv daim ntawv ntawm kev tiv thaiv. Txawm li cas los xij, qhov kev ntsuas ib txwm muaj ntawm cov xau tam sim no yog siv rau AC voltage, yog li ntawd, tam sim no ntawm cov khoom siv hluav taws xob muaj nyob rau hauv cov khoom ntawm cov xau tam sim no.
2. Thaum lub sij hawm tiv thaiv qhov ntsuas hluav taws xob, txhawm rau tiv thaiv cov khoom siv ntsuas thiab ntsuas raws li cov txheej txheem kev qhia, nws tseem yuav tsum tau txiav txim siab lub zog hluav taws xob siab tshaj plaws uas tso cai rau ntws los ntawm cov khoom siv ntsuas (cov khoom siv insulated) yam tsis muaj kev puas tsuaj. cov khoom siv kuaj (cov khoom siv insulated). ) Tus nqi siab tshaj plaws tam sim no, qhov tam sim no feem ntau kuj hu ua leakage tam sim no, tab sis txoj kev no tsuas yog siv rau lub sijhawm tshwj xeeb saum toj no. Nco ntsoov qhov txawv.
3. Cov dej xau tam sim no yog qhov tam sim no ntws los ntawm cov insulating ib feem ntawm cov hluav taws xob hluav taws xob los yog cov khoom siv nyob rau hauv qhov kev txiav txim ntawm tsis muaj qhov txhaum thiab thov voltage. Yog li ntawd, nws yog ib qho ntawm cov cim tseem ceeb los ntsuas qhov rwb thaiv tsev ntawm cov khoom siv hluav taws xob, thiab nws kuj yog lub ntsiab lus qhia txog kev nyab xeeb ntawm cov khoom.
4. Cov khoom siv hluav taws xob tam sim no siv los ntsuas cov dej ntws tawm tam sim no tsis cuam tshuam rau kev ua haujlwm tsim los ntawm kev ua haujlwm ntawm lub zog hluav taws xob (lossis lwm yam khoom siv hluav taws xob) ntawm cov khoom siv hluav taws xob los ntawm kev rwb thaiv tsev lossis kev faib cov impedance impedance, thiab nws cov input impedance simulates impedance ntawm tib neeg lub cev.
