Yuav ua li cas ntsuas cov xaim nrog lub multimeter ua ntej xa hluav taws xob
Qhov chaw thaiv yog threaded nrog teeb thiab panels ntsia. Kuv yuav ntsuas cov xov hlau li cas nrog lub multimeter kom pom tias muaj teeb meem ua ntej kuv xa hluav taws xob? Txhawm rau kom ntseeg tau tias cov teeb ci vaj huam sib luag tsis raug hlawv thaum lub zog xa mus.
Thawj kauj ruam kom paub meej tias qhov ntsuas hluav taws xob ntawm lub teeb thiab teeb thiab coj lub zog ntawm tib qhov hluav taws xob, nrog lub iav multimeter rau AC voltage 500 (600) V iav ntsuas lub zog ntawm (hloov) input voltage tuaj yeem paub txog yog 220V lossis 380V, cov teeb pom kev dav dav thiab teeb pom kev zoo yog 220V, yog tias dhau los ntawm 380 Ⅴ voltage yuav raug hlawv;
Qhov thib ob kauj ruam nyob rau hauv tsis energized ua ntej lub hwj chim take-off (hloov) tso zis nrog ib tug multimeter mus rau lub diode iav los ntsuas lub teeb thiab lanterns tshem tawm lub hwj chim kab yog luv luv, yog hais tias muaj ib tug luv luv-circuit resistance tus nqi yog. feem ntau nyob rau hauv lub 0 mus rau ob peb ohms (000-010), thaum qhov no yuav tsum tau mus rau lub kauj ruam tom ntej no nyob rau hauv kev pom zoo thiab nrhiav kom tau, yog hais tias tus nqi ntawm ob peb txhiab ohms los yog infinity yuav tsis saib xyuas;
Qhov thib peb kauj ruam kom paub meej tias lub teeb thiab lub teeb ntawm lub zog hluav taws xob thiab cov kab tsis yog luv luv nyob rau hauv qhov xwm txheej ntawm lub zog (kaw qhov hloov), yog tias lub hwj huam mov (hloov) tswj lub teeb tsis ci, koj muaj txhawm rau txheeb xyuas cov teeb thiab teeb ci kawg ntawm cov kab pej xeem raug txiav tawm, lub hwj chim tawm ntawm pej xeem kawg ntawm kev rhuav tshem ntawm ib qho ntawm cov ntaub qhwv (public junction) kom tshem tawm cov kab thiab xyuam xim rau cov hlau tsis kov lwm yam, thiab tom qab ntawd energized. Nrog lub multimeter hloov mus rau AC voltage ntawm 500 (600) V qib txoj hauj lwm, koj tuaj yeem siv lub rooj dub hauv av, lub rooj liab thaum tus cwj mem raug ntsuas los ntsuas qhov kev sib txuas ntawm ob kawg ntawm kab, yog tias lub multimeter qhia qhov voltage ntawm ob peb lub kaum os volts lossis ntau dua ntsuas los qhia tias cov kab tsis raug txiav, yog tias qhov kev ntsuas tsis muaj qhov hluav taws xob ntawm ob qho kawg ntawm qhov yuav tsum tau txiav tawm hauv lub hwj chim tshem tawm (hloov) ob kab hloov mus txuas thiab ntsuas, muaj yog qhov kawg ntawm qhov hluav taws xob yog qhov zoo, cov kab tsis muaj qhov kawg ntawm qhov hluav taws xob yog tawm ntawm qhov tsis sib xws, qhov qub yog tsim rau 380V kab dhau kev ntsuas ntsuas, qhov kawg yog tsim rau 220V kab dhau kev ntsuas ntsuas. Lub tom kawg yog tsim rau 220v kab hla kev ntsuas ntsuas; yog tias tsuas yog lub teeb hauv zos thiab cov teeb ci tsis ci, ces rov xyuas cov teeb thiab cov teeb ci ntawm cov kab hluav taws xob, cov khoom siv hluav taws xob sib txuas thiab lwm yam teeb meem.
