1. Lub hauv paus ntsiab lus ntawm kev ntsuas hluav taws xob digital rwb thaiv tsev
Lub rwb thaiv tsev tiv thaiv tester suav cov nqi hluav taws xob tiv thaiv raws li Ohm txoj cai. Los ntawm kev tso tawm qhov hluav taws xob DC uas qis dua qhov ntsuas lub zog dielectric, thiab tom qab ntawd ntsuas qhov tam sim no, cov nqi hluav taws xob tiv thaiv raug xam.
Qhov tseeb, tus nqi ntawm cov rwb thaiv tsev tiv thaiv yog qhov loj heev, tab sis nws tsis yog infinite, yog li nws tuaj yeem suav tau los ntawm kev ntsuas qhov xau tam sim no. Lub megohmmeter tuaj yeem tso saib tus nqi ntawm cov rwb thaiv tsev tiv thaiv, thiab cov txiaj ntsig feem ntau yog kΩ, MΩ, GΩ , Hauv ib tus neeg mob, nws txawm mus txog TΩ. Qhov loj ntawm rwb thaiv tsev tus nqi ncaj qha sawv cev rau cov rwb thaiv tsev zoo ntawm ob lub conductors.
Rwb thaiv tsev Resistance Tester
2. Cov yam ntxwv cuam tshuam rau cov txiaj ntsig ntawm kev ntsuas hluav taws xob tiv thaiv
Yog vim li cas vim li cas cov txiaj ntsig ntawm qhov ntsuas hluav taws xob tiv thaiv hluav taws xob yuav raug cuam tshuam vim tias tus nqi tam sim no tau txais los ntawm kev siv qhov ntsuas hluav taws xob tas li rau cov khoom ntsuas. Cov yam ntxwv sab nraud no, xws li qhov kub thiab txias, tuaj yeem cuam tshuam rau qhov kev xeem.
Ua ntej, cia peb txheeb xyuas cov khoom ntawm cov khoom tam sim no tsim thaum lub sij hawm ntsuas hluav taws xob, thiab xav tias tsis muaj ib yam dab tsi yuav cuam tshuam rau kev ntsuas.
Muaj peb yam ntawm tag nrho cov tam sim no ntawm insulating cov ntaub ntawv thaum ib tug voltage yog siv: lub capacitive tam sim no, los yog lub capacitive them tam sim no.
Capacitive tam sim no: Thaum kuaj cov rwb thaiv tsev tiv thaiv, qhov them tam sim no yuav tsum tau ua ntej sau cov capacitance ntawm cov khoom siv insulating los kuaj. Qhov tam sim no kuj loj heev thaum pib ntawm lub sijhawm sim, thiab thaum lub voj voog nyob rau hauv kev sim raug them, nws yuav poob ntawm tus nqi nrawm kom ze rau Zero. Nws yuav ruaj khov tom qab ob peb vib nas this lossis kaum vib nas this, thiab qhov tam sim no me me uas nws tuaj yeem tsis quav ntsej txog tus nqi tam sim no.
Absorbing tam sim no, lub absorbing tam sim no txawv ntawm lub capacitor tam sim no. Qhov ceev ntawm qhov absorbing tam sim no poob qis dua li qhov them tam sim no ntawm lub capacitor. Nws feem ntau yuav siv li ob peb feeb kom ncav cuag tus nqi ze rau xoom thiab ruaj khov.
Cov dej xau tam sim no, tseem hu ua polarization tam sim no, yog qhov tam sim no tsim thaum lub sij hawm polarization txheej txheem ntawm insulating nruab nrab nyob rau hauv qhov kev txiav txim ntawm voltage. Qhov loj ntawm qhov tam sim no qhia qhov zoo ntawm cov rwb thaiv tsev. Cov motors uas muaj peev xwm loj lossis cov kab hluav taws xob nrog kev ncua deb thiab cov ntu loj loj Nws yuav siv sijhawm li 30 feeb rau lub capacitor them tam sim no thiab lub dab dej tam sim no kom txo qis thiab ruaj khov, yog li kev ntsuas rwb thaiv tsev tuaj yeem tau txais qhov tseeb.
Summary : Thaum lub sij hawm tsis tu ncua yog siv rau hauv Circuit Court, tag nrho cov tam sim no nyob rau hauv insulating cov ntaub ntawv raug kuaj hloov lub sij hawm. Qhov no txhais tau hais tias cov rwb thaiv tsev kuj tseem hloov pauv ntau lub sijhawm
Kev cuam tshuam ntawm qhov kub thiab txias: Tus nqi ntawm rwb thaiv tsev kuj tseem yuav hloov thaum kub nce lossis poob. Hauv kev ntsuas kev tiv thaiv, kev ntsuas hluav taws xob tiv thaiv yuav tsum tau ua ntawm qhov kub zoo sib xws. Yog tias qhov xwm txheej no tsis tau raws li, qhov ntsuas kub yuav tsum tau teeb tsa raws li tus qauv, nws hloov dua siab tshiab thiab kho. Raws li cov lus qhia dav dav, yog tias qhov ntsuas kub nce mus txog 10 degree, tus nqi tiv thaiv yuav poob mus rau ib nrab ntawm qhov ntsuas kub ntawm qhov ntsuas kub; Yog hais tias qhov kub thiab txias poob los ntawm 10 degree, tus nqi kuj yuav yog ob zaug tus nqi siv.
Kev cuam tshuam ntawm cov av noo ntawm cov txiaj ntsig ntawm kev ntsuas hluav taws xob tiv thaiv hluav taws xob feem ntau yog nyob ntawm qib ntawm kev sib kis ntawm qhov chaw ntawm lub insulator. Txawm li cas los xij, kev saib xyuas tshwj xeeb yuav tsum tau them, thiab kev ntsuas kev tiv thaiv hluav taws xob yuav tsum tsis txhob ua thaum qhov kub thiab txias poob qis dua qhov dej lwg.