Clamp Meter (Clamp Meter) Siv thiab ceev faj
Clamp meter yog qhov tseem ceeb ua los ntawm kev hloov pauv tam sim no, lub clamp spanner thiab cov txheej txheem magneto-electric rectified nrog cov tshuaj tiv thaiv quab yuam ntsuas.
Lub clamp meter ua haujlwm ntawm tib lub hauv paus ntsiab lus xws li transformer. Thawj kauj yog cov xaim uas dhau los ntawm cov tub ntxhais clamp, uas yog sib npaug rau cov kauj ruam tseem ceeb ntawm 1-tig transformer, uas yog kauj ruam-up transformer. Secondary coil thiab ammeter rau kev ntsuas ua rau theem nrab Circuit Court. Thaum cov hlau muaj qhov hloov pauv tam sim no los ntawm, nws yog qhov tig ntawm lub kauj ua ib qho chaw sib nqus sib nqus, nyob rau hauv qhov thib ob Circuit Court tsim ib qho induced tam sim no, qhov loj ntawm qhov tam sim no thiab qhov piv ntawm cov thawj tam sim no, uas yog sib npaug rau inverse. ratio ntawm tus naj npawb ntawm lem ntawm lub hauv paus thiab theem nrab coils. Clamp ammeter yog siv los ntsuas qhov loj tam sim no, yog tias qhov tam sim no tsis loj txaus, koj tuaj yeem nce tus naj npawb ntawm cov lem ntawm thawj tus neeg xyuas pib los ntawm lub ntsuas ntsuas clamp, tib lub sij hawm tus naj npawb ntawm ntsuas tam sim no muab faib los ntawm tus naj npawb ntawm lem.
Clamp ammeter los ntawm cov tub ntxhais ntawm tam sim no transformer winding nyob rau sab thib ob ntawm cov tub ntxhais thiab txuas nrog AC ammeter, nws thawj winding uas yog los ntawm qhov chaw ntawm transformer ntsuas hlau. Lub pob qhov rooj yog qhov hloov pauv ntau yam, thiab lub luag haujlwm ntawm lub spanner yog qhib thiab kaw qhov txav ntawm lub hauv paus ntawm cov tub ntxhais transformer txhawm rau ua kom nws clamp cov hlau ntsuas.
Kev ntsuas tam sim no, nias lub spanner, qhib lub puab tsaig, ntsuas cov xaim nqa tam sim no muab tso rau hauv nruab nrab ntawm qhov hnav-centre hom tam sim no transformer, thaum ntsuas tus neeg xyuas pib muaj qhov hloov pauv tam sim no los ntawm qhov hloov pauv tam sim no hauv qhov hloov pauv sab nraud. ntawm lub winding induces ib tug tam sim no, uas dhau los ntawm lub kauj ntawm lub electromagnetic ammeter, thiaj li hais tias tus pointer yog deflected nyob rau hauv lub dial scale taw qhia tias qhov ntsuas tam sim no tus nqi.
Kev siv
(1) Zero mechanically ua ntej ntsuas.
(2) Xaiv qhov tsim nyog, ua ntej xaiv qhov loj, tom qab ntawd xaiv qhov me me lossis saib daim ntawv teev npe kom kwv yees.
(3) Thaum siv qhov ntsuas qhov tsawg kawg nkaus, qhov kev nyeem ntawv tsis pom tseeb, cov hlau ntsuas tuaj yeem raug mob nyob ib ncig ntawm ob peb lub lem, tus naj npawb ntawm tig mus rau lub puab tsaig ntawm lub hauv paus ntawm tus lej ntawm qhov kev hloov yuav yeej, tom qab ntawd kev nyeem ntawv {{1} } qhov taw qhia tus nqi × ntau yam / tag nrho kev tsis ncaj ncees × tus lej hloov
(4) Kev ntsuas ua tiav, txhawm rau muab qhov hloov pauv hloov ntawm * ntau yam.
(5) Kev ntsuas, cov hlau ntsuas yuav tsum nyob hauv nruab nrab ntawm lub puab tsaig, thiab ua kom lub puab tsaig kaw kom nruj kom txo tau qhov yuam kev.
Cov kev ceev faj
(1) Qhov ntsuas hluav taws xob ntawm cov kab ntsuas yuav tsum qis dua qhov ntsuas hluav taws xob ntawm lub ntsuas ntsuas clamp.
(2) Thaum ntsuas qhov tam sim no ntawm cov kab hluav taws xob siab, hnav cov hnab looj tes insulated, cov khau insulated thiab sawv ntawm cov ntaub thaiv npog.
(3) Clamp lub puab tsaig yuav tsum raug kaw kom nruj tsis tuaj yeem raug them los hloov ntau yam
Kev siv hluav taws xob ntsuas clamp meter thiab kev siv ceev faj
Clamp ammeter muab faib ua qhov siab thiab qis voltage ob hom, siv nyob rau hauv cov ntaub ntawv ntawm tsis dismantling txoj kab ncaj qha ntsuas qhov tam sim no nyob rau hauv txoj kab. Nws txoj kev siv yog raws li nram no:
(1) Kev siv cov high-voltage clamp meter yuav tsum tau them sai sai rau qhov voltage theem ntawm lub clamp ammeter, yog nruj me ntsis txwv tsis pub siv low-voltage clamp meter los ntsuas qhov tam sim no ntawm high-voltage circuits. Kev ntsuas nrog high-voltage clamp meter yuav tsum tau ua los ntawm ob tus neeg, kev ntsuas cov neeg ua haujlwm tsis ua haujlwm yuav tsum tau sau thawj daim pib ua haujlwm, kev ntsuas yuav tsum hnav cov hnab looj tes insulated, sawv ntawm cov ntaub thaiv insulating, thiab yuav tsum tsis txhob kov lwm yam khoom siv txhawm rau tiv thaiv. luv-circuit los yog grounding.
(2) Saib xyuas lub sijhawm ntsuas, ua tib zoo saib xyuas kom muaj kev nyab xeeb ntawm lub taub hau thiab qhov chaw them nyiaj, qhov kev ncua deb ntawm ib feem ntawm tib neeg lub cev thiab lub cev them nyiaj yuav tsum tsis pub tsawg dua qhov ntev ntawm lub ntsuas clamp.
(3) Thaum ntsuas ntawm lub high-voltage Circuit Court, nws yog txwv tsis pub siv ib tug hlau mus txuas rau lwm meter los ntawm lub clamp-on ammeter los ntsuas. Kev ntsuas ntawm high-voltage cable tam sim no ntawm txhua theem, qhov kev ncua deb ntawm lub cable taub hau kab yuav tsum ntau tshaj 300mm, thiab zoo rwb thaiv tsev, yuav tsum tau txiav txim siab yooj yim rau kev ntsuas ua ntej.
(4) Kev ntsuas qhov hluav taws xob qis fusible fuse lossis kab rov tav txheej txheem qis-voltage busbar tam sim no, yuav tsum tau ntsuas ua ntej cov theem ntawm fusible fuse lossis busbar nrog cov ntaub ntawv insulating los tiv thaiv kev sib cais, thiaj li tsis ua rau theem-rau-theem luv luv Circuit Court. .
(5) Kev ntsuas yog nruj me ntsis txwv tsis pub thaum ib theem ntawm cable yog grounded. Tiv thaiv qhov tshwm sim ntawm cov rwb thaiv tsev qis vim lub taub hau cable rau hauv av tawg tawg thiab ua rau muaj kev phom sij rau tus kheej.
(6) Clamp ammeter ntsuas tom qab qhov kawg ntawm kev hloov mus rau qhov siab tshaj plaws ntau yam iav, kom tsis txhob siv tom ntej ntawm inadvertent overcurrent; thiab yuav tsum tau muab cia rau hauv ib chav qhuav
