Kev siv cov clamp ammeters
Ua ntej ntsuas
Ua ntej, lub clamp ammeter yuav tsum raug xaiv kom raug raws li hom thiab qib voltage ntawm qhov ntsuas tam sim no. Qhov hluav taws xob ntawm qhov ntsuas hluav taws xob yuav tsum qis dua qhov ntsuas hluav taws xob ntawm lub clamp ammeter. Thaum ntsuas tam sim no ntawm high-voltage kab, ib tug high-voltage clamp ammeter uas phim nws voltage theem yuav tsum tau xaiv. Tsawg voltage clamp ammeters tsuas yog ntsuas qhov tam sim no hauv cov tshuab hluav taws xob tsawg thiab tsis tuaj yeem ntsuas qhov tam sim no hauv cov tshuab hluav taws xob siab.
Qhov thib ob, ua ntej siv, nws yog ib qho tsim nyog yuav tsum tau kuaj xyuas qhov zoo ntawm lub clamp ammeter. Nws yog ib qho tsim nyog yuav tsum xyuas seb qhov ntsuas hluav taws xob puas zoo, lub plhaub yuav tsum tsis muaj kev puas tsuaj, thiab tus kov yuav tsum huv thiab qhuav. Yog hais tias tus pointer tsis nyob rau hauv lub xoom txoj hauj lwm, mechanical zeroing yuav tsum tau ua. Lub puab tsaig ntawm lub clamp ammeter yuav tsum nruj nruj. Yog tias tus pointer shakes, lub puab tsaig tuaj yeem qhib thiab kaw dua. Yog tias tseem muaj kev co, yuav tsum tau ua tib zoo tshuaj xyuas kom tshem tawm cov khib nyiab thiab av ntawm lub puab tsaig ua ntej ntsuas.
Vim yog kev sib cuag ntawm lub clamp ammeter thiab ntsuas Circuit Court, lub clamp ammeter tsis tuaj yeem ntsuas qhov tam sim no ntawm tus neeg xyuas pib liab qab. Thaum siv lub high-voltage clamp meter rau kev ntsuas, nws yuav tsum tau ua los ntawm ob tug neeg. Thaum ntsuas, cov hnab looj tes insulated yuav tsum tau hnav, sawv ntawm ib qho insulated ncoo, thiab lwm yam khoom siv yuav tsum tsis txhob kov los tiv thaiv luv luv los yog hauv av.
Thaum ntsuas
Ua ntej, thaum siv, tus ciaj ntswj yuav tsum tau nruj kom qhib lub puab tsaig. Muab cov xaim kuaj nyob rau hauv nruab nrab ntawm lub puab tsaig, tom qab ntawd loosen lub wrench thiab kaw lub puab tsaig kom nruj. Yog tias muaj suab nrov ntawm qhov sib koom ua ke ntawm cov pliers, nws yuav tsum tau qhib thiab kaw dua. Yog tias tseem muaj suab nrov, qhov sib koom ua ke yuav tsum tau kho kom qhov kev nyeem ntawv raug. Tsis tas li ntawd, nws tsis raug tso cai rau clamp ob lub xov hlau ib txhij. Tom qab nyeem ntawv, qhib lub puab tsaig, tawm ntawm cov hlau ntsuas, thiab teeb lub iav mus rau qhov siab tshaj plaws tam sim no lossis OFF iav.
Qhov thib ob, qhov tsim nyog ntau yam ntawm clamp hom ammeter yuav tsum raug xaiv raws li qhov loj ntawm qhov ntsuas tam sim no. Qhov kev xaiv yuav tsum yog me ntsis loj dua li qhov ntsuas tam sim no. Yog tias nws tsis tuaj yeem kwv yees, txhawm rau tiv thaiv kev puas tsuaj rau lub clamp ammeter, qhov ntsuas yuav tsum pib ntawm qhov siab tshaj plaws thiab maj mam hloov lub zog kom txog thaum qhov ntau yam tsim nyog. Nws yog nruj me ntsis txwv tsis pub hloov lub iav ntawm lub clamp ammeter thaum lub sij hawm ntsuas. Thaum hloov cov iav, ntsuas hlau yuav tsum tau muab tshem tawm ntawm lub clamp ua ntej hloov lub iav.
Thaum ntsuas tam sim no qis dua 5 amps, txhawm rau ua kom qhov kev nyeem ntawv ntau dua, yog tias muaj kev tso cai, qhov ntsuas tam sim no nqa xaim tuaj yeem raug mob ob peb zaug thiab muab tso rau hauv clamp rau kev ntsuas. Nyob rau ntawm lub sijhawm no, tus nqi tam sim no ntawm cov xaim kuaj yuav tsum sib npaug rau qhov kev nyeem ntawv tus nqi ntawm cov cuab yeej muab faib los ntawm cov xov tooj ntawm cov xaim tig muab tso rau hauv lub clamp.
Thaum ntsuas, yuav tsum tau saib xyuas kom muaj kev nyab xeeb ntawm txhua qhov ntawm lub cev thiab lub cev raug them. Qhov chaw nyab xeeb rau cov tshuab hluav taws xob tsawg yog 0.1-0.3 meters. Thaum ntsuas qhov tam sim no ntawm txhua theem ntawm high-voltage cables, qhov kev ncua deb ntawm lub taub hau cable yuav tsum yog tsawg kawg yog 300 millimeters, thiab cov rwb thaiv tsev yuav tsum zoo. Nws tsuas yog ua tau thaum nws pom tau tias yooj yim rau kev ntsuas. Thaum soj ntsuam lub sijhawm ntawm lub moos, yuav tsum tau them nyiaj tshwj xeeb rau kev tswj kom muaj kev nyab xeeb ntawm lub taub hau thiab qhov them nyiaj. Qhov kev ncua deb ntawm ib feem ntawm tib neeg lub cev thiab qhov them nyiaj yuav tsum tsis txhob tsawg tshaj li qhov ntev ntawm lub clamp saib.
Thaum ntsuas qhov tam sim no ntawm cov hluav taws xob tsis tshua muaj hluav taws xob fusible fuses lossis kab rov tav txheej txheem qis-voltage busbars, txhua theem ntawm fusible fuse lossis busbar yuav tsum tau tiv thaiv thiab cais nrog cov ntaub ntawv rwb thaiv tsev ua ntej ntsuas kom tsis txhob ua rau theem luv luv Circuit Court. Thaum ib theem ntawm lub cable yog grounded, kev ntsuas yog nruj me ntsis txwv tsis pub tiv thaiv hauv av tawg thiab tawg los ntawm cov rwb thaiv tsev qis ntawm lub taub hau cable, uas yuav ua rau muaj kev nyab xeeb ntawm tus kheej.
Tom qab ntsuas
Tom qab kev ntsuas tiav lawm, lub clamp hom ammeter ntawm lub clamp hom ammeter yuav muaj qhov sib txawv tseem ceeb ntawm tus nqi qhia thiab tus nqi ntsuas, lossis txawm tias tsis muaj qhov taw qhia, yog ntsuas siv cov khoom siv magneto fais fab clamp hom ammeter. Yog vim li cas rau qhov no yog lub taub hau ntawm magneto hluav taws xob clamp hom ammeter txuas nrog lub kauj thib ob ntawm lub transformer, thiab qhov hluav taws xob ntawm lub taub hau yog tau los ntawm ob kauj ruam. Raws li lub hauv paus ntsiab lus ntawm electromagnetic induction, kev sib nrig sib inductance electromotive quab yuam yog E2=4.44fW Ф m. Nws tsis yog qhov nyuaj rau pom los ntawm cov pej xeem ceeb toom tias qhov loj ntawm qhov sib nrig sib inductance electromotive quab yuam yog ncaj qha proportional rau zaus. Thaum siv hom clamp meter los ntsuas rotor tam sim no, vim qhov tsawg zaus ntawm lub rotor, qhov hluav taws xob tau txais ntawm lub taub hau 'meter' yuav tsawg dua li thaum ntsuas tib lub zog zaus tam sim no (vim tias hom 'meter' lub taub hau no yog tsim los rau AC 50Hz fais fab zaus). Qee lub sij hawm tam sim no me me heev thiab tsis tuaj yeem ua rau cov khoom siv kho qhov muag hauv lub taub hau 'meter', yog li lub ntsuas ntsuas clamp tsis qhia lossis tus nqi qhia txawv ntawm tus nqi tiag tiag.
Yog tias siv lub ntsuas hluav taws xob electromagnetic, vim tias tsis muaj cov coils thib ob thiab cov khoom siv hluav taws xob hauv lub ntsuas ntsuas, qhov sib nqus flux tsim los ntawm cov ntsuas tam sim no dhau los ntawm lub taub hau 'meter', magnetizing cov hlau zoo li qub thiab dynamic hlau daim hlau ntawm lub taub hau, ua rau. tus pointer ntawm lub 'meter' lub taub hau rau deflect, uas tsis muaj feem xyuam rau qhov zaus ntawm qhov ntsuas tam sim no, yog li nws tuaj yeem qhia meej tus nqi ntawm rotor tam sim no.
