Cov txheej txheem thiab kev ceev faj rau kev ntsuas tam sim no nrog lub clamp meter
Lub ntsuas hluav taws xob yog ib qho cuab yeej uas sib txuas ua ke tam sim no transformer thiab ammeter. Nws yog ib ceg tseem ceeb ntawm digital multimeter. Nws yog ib qho khoom siv portable uas tuaj yeem ntsuas ncaj qha rau AC tam sim no ntawm ib lub voj voog yam tsis muaj kev cuam tshuam lub voj voog. Lub clamp 'meter' yog qhov tseem ceeb ntawm kev hloov pauv tam sim no, lub tshuab hluav taws xob clamp thiab lub tshuab hluav taws xob rectifier magnetoelectric nrog cov tshuaj tiv thaiv quab yuam.
Cov lus qhia:
(1) Kev kho tshuab xoom yuav tsum tau ua ntej ntsuas.
(2) Xaiv qhov tsim nyog, ua ntej xaiv qhov loj, ces xaiv qhov me me lossis kwv yees raws li tus nqi ntawm daim ntawv teev npe.
3) Thaum siv qhov ntsuas qhov tsawg kawg nkaus thiab qhov kev nyeem ntawv tsis pom tseeb, koj tuaj yeem ua kom cov hlau nyob hauv kev sim ob peb zaug. Tus naj npawb ntawm cov lem yuav tsum yog nyob ntawm tus naj npawb ntawm lem nyob rau hauv nruab nrab ntawm lub puab tsaig. Tom qab ntawd qhov kev nyeem ntawv=qhia tus nqi × ntau yam / tag nrho sib txawv × tus lej hloov.
(
4) Tom qab kev ntsuas tiav, tso qhov hloov pauv ntawm qhov siab tshaj plaws.
(5) Thaum ntsuas, tus neeg xyuas pib hauv kev sim yuav tsum nyob hauv nruab nrab ntawm lub puab tsaig thiab lub puab tsaig yuav tsum raug kaw kom nruj kom txo tau qhov yuam kev.
Cov kev ceev faj:
(1) Thaum siv high-voltage clamp meter, them sai sai rau qhov 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 ntsuas nrog high-voltage clamp meter, nws yuav tsum tau ua los ntawm ob tug neeg. Cov neeg ua haujlwm tsis ua haujlwm yuav tsum tau sau rau hauv daim pib ua haujlwm thib ob thaum ntsuas. Lawv yuav tsum hnav cov hnab looj tes insulating thiab sawv ntawm cov ntaub qhwv insulating thaum ntsuas. Lawv yuav tsum tsis txhob kov lwm yam khoom siv los tiv thaiv luv luv lossis hauv av.
(2) Thaum soj ntsuam lub sij hawm ntawm lub 'meter', yuav tsum tau saib xyuas tshwj xeeb kom muaj kev nyab xeeb ntawm lub taub hau thiab qhov chaw nyob. Qhov kev ncua deb ntawm ib feem ntawm tib neeg lub cev thiab lub cev nyob yuav tsum tsis txhob tsawg tshaj li qhov ntev ntawm lub clamp meter.
(3) Thaum ntsuas ntawm lub high-voltage Circuit Court, nws yog txwv tsis pub siv cov xov hlau los ntawm clamp-hom ammeter mus rau lwm lub 'meter' rau kev ntsuas. Thaum ntsuas qhov tam sim no ntawm txhua theem ntawm high-voltage cable, qhov kev ncua deb ntawm lub taub hau cable yuav tsum yog ntau tshaj 300mm thiab cov rwb thaiv tsev yuav tsum zoo. Kev ntsuas tsuas yog ua tau thaum nws pom tau tias yooj yim.
(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 fusible fuse lossis busbar yuav tsum tau tiv thaiv thiab cais nrog cov ntaub ntawv insulating ua ntej ntsuas kom tsis txhob luv luv Circuit Court ntawm theem.
(5) Thaum ib theem ntawm cable yog grounded, kev ntsuas yog nruj me ntsis txwv. Tiv thaiv kom tsis txhob muaj qhov tshwm sim ntawm qhov tawg tawg vim qhov hluav taws xob qis ntawm lub taub hau cable, uas yuav ua rau muaj kev phom sij rau tus kheej.
(6) Tom qab kev ntsuas ntawm lub clamp ammeter tiav lawm, rub lub hloov mus rau qhov siab tshaj plaws kom tsis txhob muaj kev cuam tshuam tsis zoo rau lwm zaus nws siv; thiab nws yuav tsum tau muab cia rau hauv chav qhuav.
