Yuav ua li cas siv cov dej ntws tawm clamp ammeter
Lub hauv paus ntsiab lus ntawm kev xau clamp ammeter:
Cov dej xau tam sim no clamp meter feem ntau suav nrog impedance hloov dua siab tshiab, hloov pauv ntau yam, AC / DC hloov dua siab tshiab, kev nthuav dav, cov khoom siv taw qhia, thiab lwm yam. Ib txhia kuj muaj kev tiv thaiv overcurrent, suab thiab lub teeb ceeb toom circuits, thiab ntsuas qhov ntsuas hluav taws xob, nrog cov khoom siv qhia tau muab faib ua analog. thiab hom digital. Raws li US UL tus qauv, cov xau tam sim no yog hais txog 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 xau tam sim no muaj ob ntu, ib qho yog qhov conduction tam sim no I1 los ntawm kev rwb thaiv tsev; Lwm qhov yog los ntawm kev hloov pauv tam sim no I2 ntawm cov khoom xa tawm, uas muaj lub peev xwm impedance ntawm XC=1/2pfc inversely proportional rau lub hwj chim zaus. Kev faib tawm capacitor tam sim no nce nrog qhov nce ntawm zaus, yog li cov dej ntws tam sim no nce nrog qhov nce ntawm lub zog zaus. Piv txwv li, thaum siv thyristor fais fab mov, lub harmonic tivthaiv tsub kom lub to tam sim no.
Yog tias qhov kev ntsuas hluav taws xob ntawm lub tshuab hluav taws xob lossis lub kaw lus raug ntsuas, qhov tam sim no yuav tsum suav nrog tsis yog tag nrho cov tam sim no ntws mus rau hauv av (lossis cov khoom siv hluav taws xob sab nraud) los ntawm cov ntaub ntawv insulating, tab sis kuj tseem ntws mus rau hauv av los ntawm cov khoom siv hluav taws xob (distributed capacitors. suav hais tias yog cov khoom siv hluav taws xob capacitive) hauv Circuit Court lossis system. Kev xaim ntev tuaj yeem tsim lub peev xwm loj dua thiab ua kom cov xau tam sim no, uas yuav tsum tau sau tseg tshwj xeeb hauv cov tshuab tsis muaj av.
Kev ceev faj rau cov dej xau clamp ammeters:
Lub hauv paus ntsiab lus ntawm kev ntsuas cov dej xau tam sim no yog qhov zoo ib 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 hais tawm hauv daim ntawv ntawm kev ua haujlwm. Txawm li cas los xij, qhov kev ntsuas ntawm cov dej xau tam sim no siv AC voltage, yog li cov khoom siv hluav taws xob tam sim no suav nrog hauv cov khoom ntawm cov xau tam sim no.
2. Thaum ua qhov ntsuas hluav taws xob tiv thaiv kev ntsuas, txhawm rau tiv thaiv cov khoom siv ntsuas thiab ntsuas raws li cov txheej txheem kev ntsuas, nws tseem yuav tsum tau txiav txim siab tam sim no tus nqi siab uas tso cai rau ntws los ntawm cov khoom siv ntsuas (cov khoom siv rwb thaiv tsev) yam tsis muaj kev puas tsuaj. siab hluav taws xob teb lub zog. Qhov tam sim no feem ntau hu ua cov xau tam sim no, tab sis qhov kev xav tau no tsuas yog siv rau cov xwm txheej tshwj xeeb uas tau hais los saum toj no. Thov xyuam xim rau qhov sib txawv.
3. Cov dej ntws tawm tam sim no yog qhov tam sim no ntws los ntawm cov rwb thaiv tsev ntawm cov hluav taws xob hluav taws xob lossis cov khoom siv yam tsis muaj qhov yuam kev lossis siv hluav taws xob. Yog li ntawd, nws yog ib qho tseem ceeb ntsuas ntsuas qhov ntsuas hluav taws xob zoo ntawm cov khoom siv hluav taws xob thiab yog qhov ntsuas tseem ceeb ntawm cov khoom lag luam.
4. Cov khoom siv hluav taws xob tam sim no siv los ntsuas cov dej ntws tawm los ntawm cov khoom siv hluav taws xob ua haujlwm (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, uas tsis cuam tshuam rau kev ua haujlwm. Nws input impedance simulates impedance ntawm tib neeg lub cev.
Kev khiav hauj lwm txoj kev ntawm leakage clamp ammeter:
1. ntsaws rau hauv lub hwj huam mov, qhib lub hwj chim hloov, thiab lub hwj chim taw qhia lub teeb yuav qhib;
2. Xaiv lub hwj chim ntau thiab nias lub khawm tam sim no;
3. Xaiv lub tswb tam sim no tus nqi;
4. Xaiv lub sijhawm sim;
5. Txuas cov khoom ntsuas mus rau qhov ntsuas lub davhlau ya nyob twg, pib lub ntsuas ntsuas, nce qhov ntsuas hluav taws xob mus rau 1.06 npaug (lossis 1.1 npaug) qhov ntsuas qhov ua haujlwm ntawm qhov ntsuas ntsuas, hloov cov theem hloov pauv hloov, nyeem theem nrab, thiab xaiv cov xau tus nqi tam sim no nrog tus nqi loj dua. Thaum qhov hloov pauv hloov K txuas nrog xoom kab, tus neeg ntsuas ntsuas cov xau tam sim no ntawm cov kab nruab nrab thiab lub plhaub; Thaum K txuas nrog rau theem kab, qhov xau tam sim no ntawm theem kab thiab lub plhaub raug kuaj.
6. Nws yuav tsum raug sau tseg tias thaum K txuas nrog xoom kab lossis K txuas rau theem kab, qhov xau tam sim no yuav tsis tas yuav zoo ib yam. Qhov no yog vim qhov chaw ntawm rwb thaiv tsev tsis muaj zog hauv cov khoom siv hauv tsev yog random. Yog li ntawd, qhov kev ntsuam xyuas tam sim no yuav tsum tau ua los ntawm kev hloov lub polarity los ntawm K, thiab siv tus nqi loj dua li qhov xau tam sim no ntawm cov khoom siv hluav taws xob ntsuas hluav taws xob.
