Feem ntau faults thiab kev daws teeb meem ntawm ammeters
Clamp hom ammeters tau muab faib ua qhov siab thiab tsis tshua muaj hluav taws xob, siv ncaj qha ntsuas qhov tam sim no hauv Circuit Court yam tsis muaj kev cuam tshuam hauv Circuit Court. Txoj kev siv yog raws li nram no:
(1) Thaum siv high-voltage clamp meter, yuav tsum tau them nyiaj mloog mus rau theem voltage ntawm lub clamp ammeter. Nws yog txwv tsis pub siv lub ntsuas hluav taws xob tsawg-voltage los ntsuas qhov tam sim no ntawm high-voltage circuit. Thaum siv lub high-voltage clamp meter rau kev ntsuas, nws yuav tsum tau ua los ntawm ob tug neeg. Cov neeg ua haujlwm tsis ua haujlwm yuav tsum tau ua daim ntawv tso cai ua haujlwm thib ob. Thaum ntsuas, lawv yuav tsum hnav cov hnab looj tes insulated, sawv ntawm cov ntaub thaiv npog, thiab tsis txhob kov lwm yam khoom siv los tiv thaiv luv luv los yog hauv av.
(2) 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.
(3) Thaum ntsuas ntawm high-voltage Circuit Court, nws yog txwv tsis pub txuas cov xov hlau los ntawm lub clamp ammeter mus rau lwm lub 'meter' rau kev ntsuas. Thaum ntsuas qhov tam sim no ntawm txhua theem ntawm high-voltage cables, qhov kev ncua deb ntawm cable taub hau yuav tsum yog tsawg kawg yog 300 hli, thiab cov rwb thaiv tsev yuav tsum zoo. Nws tsuas yog ua tau thaum nws pom tau tias yooj yim rau kev ntsuas.
(4) Thaum ntsuas qhov tam sim no ntawm cov hluav taws xob qis 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 cov ntaub ntawv rwb thaiv tsev ua ntej ntsuas kom tsis txhob ua rau theem luv luv Circuit Court.
(5) Nws yog nruj me ntsis txwv tsis pub ntsuas thaum ib theem ntawm cable yog grounded. Txhawm rau tiv thaiv kev tawg hauv av thiab tawg los ntawm kev rwb thaiv tsev qis ntawm lub taub hau cable, uas yuav ua rau muaj kev phom sij rau tus kheej.
(6) Tom qab kev ntsuas clamp ammeter tiav lawm, tig qhov hloov mus rau qhov siab tshaj plaws kom tsis txhob overcurrent thaum siv tom ntej; Thiab yuav tsum tau muab cia rau hauv tsev hauv qhov chaw qhuav.
Kev daws rau clamp ammeter
(1) Thaum ntsuas qhov tam sim no lossis qhov hluav taws xob, muaj ib lossis ob peb theem yam tsis muaj kev qhia, thaum lwm qib qhia tau hais tias ib txwm muaj. Yog vim li cas yog tias lub fastening hloov ntsia hlau ntawm lub clamp meter yog xoob, los yog cov xaim ntawm nws ceg hloov yog twisted thiab tawg. Hom kev ua txhaum no yog feem ntau, tsuas yog txuas cov hlau tawg tom qab qhib lub hau.
(2) Kev nyeem ntawv tam sim no tsawg dhau, thaum lub zog nyeem ntawv yog qhov qub. Yog vim li cas rau qhov no feem ntau yog vim kev sib cuag tsis zoo ntawm lub puab tsaig thiab cov hlau nplaum ntau dhau. Lub puab tsaig yuav tsum raug kho kom ntseeg tau tias kev sib cuag zoo. Hom kev txhaum no qee zaum tshwm sim los ntawm luv luv Circuit Court ntawm windings, uas tuaj yeem ua teeb meem heev. Feem ntau, nws yog ib qho tsim nyog yuav tsum rov qab ua raws li cov ntaub ntawv qub thiab ua rau kev laus.
(3) Cov kev nyeem ntawv tam sim no thiab qhov hluav taws xob yog qhov tsawg, uas feem ntau tshwm sim ntawm cov hlau nplaum sab hauv hom ntsuas ntsuas. Yog vim li cas yog demagnetization ntawm cov hlau nplaum, uas feem ntau yuav tsum tau daws los ntawm magnetization. Nws kuj tseem tuaj yeem hloov kho los ntawm kev txo cov nqi tiv thaiv kev sib txuas hauv series nrog lub meter taub hau ceg.
(4) Yog tias ib qho ntawm cov kev nyeem tsis raug, qhov sib thooj yuav tsum tau hloov kho.
(5) Qhov taw qhia theem voltage yog qhov qub, tab sis tsis muaj qhov qhia txog qib tam sim no. Siv ib lub multimeter los xyuas qhov kev hloov pauv thawj zaug thiab lub voj voog thib ob rau txhua qhov txawv txav.
(6) Tsis muaj qhov taw qhia kiag li. Lub rectifier diode, meter lub taub hau, hloov, thiab xaim txuas nrog lossis cuam tshuam nrog lub ntsuas ntsuas clamp yuav tsum raug kuaj xyuas kom muaj kev tawg.
