Raws li cov khoom siv tseem ceeb hauv lub ntsuas hluav taws xob, ntsuas ntsuas ntawm hluav taws xob ntsuas hluav taws xob ncaj qha nws cov xwm txheej uas muaj feem xyuam. Kev tshawb fawb tau txhais cov meter feem ntau yog qhov tseem ceeb yog qhov ua kom muaj zog ntawm cov hluav taws xob, cov kab ke sib xws, thiab cov neeg siv kev nyab xeeb.
Los ntawm kev xav paub txuj ci, lub ntsuas hluav taws xob ntsuas yog feem ntau yog suav nrog ob qho ntsuas tseem ceeb: "ntsuas tam sim no tam sim no" thiab "siab tshaj plaws tam sim no." Rau ib qho kev sib xws ib-}}}}}}}}}}, 10a, 10a, 10a, 10a, 10a}}}} lub sij hawm load thev taus. Tshaj dhau tus nqi no tuaj yeem ua rau tivthaiv overheating lossis nce ntsuas qhov yuam kev. Rau peb -}}}}}}} theem muaj hluav taws xob metres meters, ntsuas ntsuas yuav tsum tau haum txawm tias yuav muaj cov kev yuav tsum tau ua. Some models support a wide measurement range of 0.1A to 200A with 0.5S-level accuracy, and can even be expanded to the kiloampere range with an external shunt.
Lub ntsuas kub pes 'cov cai uas yuav tsum tau sib txawv tshaj plaws ntawm cov kev thov sib txawv. Hauv cov hluav taws xob cov hluav taws xob cov hluav taws xob feem ntau npog tag nrho cov neeg hauv kev thauj khoom ntawm 3kW txog 10kW (sib piv rau cov dej hiav txwv ntawm kwv yees li ntawm 13a rau 45a). Qhov no tsis yog ua tau raws li cov khoom siv hluav taws xob txhua hnub, tab sis kuj tso cai rau kev sib txuas ntawm cov khoom siv hluav taws xob siab xws li cua txias thiab cua sov dej kom sov. Kev lag luam lag luam thiab kev lag luam kev lag luam yuav tsum muaj cov khoom muaj zog ntau dua. Piv txwv li, cov chav nruab nrab cov ntaub ntawv tuaj yeem nruab nrog ntse meters nrog ntau ntawm 200A lossis ntau dua los saib xyuas cov neeg rau zaub mov sib xyaw. Hauv kev hloov kho lub zog rov ua dua tshiab
Nws yog ib qho tseem ceeb kom nco ntsoov tias xaiv lub 'meter' ntau yam tsis tas yuav zoo dua. Ntau dhau siab calibration qe tuaj yeem txo cov meteritiving thaum lub sijhawm qis dua 5 tus), thaum muaj kev pheej hmoo ntau dhau lawm. Niaj hnub nimno Smart Meters sib npaug cov nro no los ntawm ntau-} ntev tsis siv neeg switdown desio tsim). Kev sib txuas lus modules tseem tuaj yeem upload cov khoom lag luam hauv lub sijhawm tiag tiag, pab cov neeg siv txoj kev siv hluav taws xob. Kev ntsuas ntsuas ntsuas qhov tseeb yog ob qho tib si uas yuav tsum muaj cov qauv txheej txheem cov qauv txheej txheem thiab cov khoom tseem ceeb hauv kev tswj hwm kev ua haujlwm zoo. Lub tshuab hluav taws xob ua kom muaj zog, ua kom haum me me yuav ua rau muaj kev txhawj xeeb tseem ceeb rau kev lag luam.