Cov kev tsis sib xws ntawm cov khoom siv hluav taws xob faib khoom feem ntau suav nrog cov cim tseem ceeb xws li ntsuas hluav taws xob, ntsuas tam sim no, thiab ntsuas zaus. Rated voltage yog hais txog qhov siab tshaj plaws voltage uas cov khoom siv tuaj yeem ua haujlwm zoo nyob rau lub sijhawm ntev, ua lub hauv paus tseem ceeb rau kev tsim thiab xaiv cov khoom siv. Rated tam sim no, conversely, qhia qhov siab tshaj plaws tam sim no tus nqi ntawm cov cuab yeej muaj peev xwm tiv tau thaum lub sij hawm ib txwm ua hauj lwm, ib yam dab tsi uas ncaj qha cuam tshuam qhov loj ntawm busbars, keyboards, thiab conductors. Rated zaus-feem ntau 50 Hz lossis 60 Hz- muaj kev cuam tshuam ncaj qha rau ob qho tib si hluav taws xob kev ua tau zoo thiab kev ruaj ntseg ntawm cov khoom siv.
Ntxiv rau qhov tsis muaj qhov tseem ceeb no, luv luv - Circuit Court breaking peev thiab rwb thaiv tsev chav kawm ua lwm yam tseem ceeb hauv kev ntsuas rau cov khoom siv hluav taws xob. Luv - Circuit Court breaking muaj peev xwm txhais tau hais tias cov cuab yeej muaj peev xwm los cuam tshuam kev cuam tshuam tam sim no yam tsis muaj kev cuam tshuam thaum muaj kev cuam tshuam luv luv, ua tus ntsuas tseem ceeb rau kev ntsuas nws qhov txhaum- muaj peev xwm tiv taus. Cov chav kawm rwb thaiv tsev, lub sijhawm no, txiav txim siab cov cuab yeej muaj peev xwm tiv taus cov hluav taws xob tsis ntev los no nrog rau kev ntxhov siab ib puag ncig- xws li kub, av noo, thiab cov pa phem- yog li ua kom nws lub sijhawm ntev - ua haujlwm nyab xeeb. Tsis tas li ntawd, cov khoom siv hluav taws xob faib ua qhov tseem ceeb rau kev ua haujlwm precision thiab ntse tsis muaj peev xwm, suav nrog lub peev xwm thauj khoom, lub zog poob, qhov ntsuas kub nce siab, nrog rau cov lus teb ceev thiab cov ntaub ntawv raug ntawm kev saib xyuas. Cov kev txwv no ncaj qha cuam tshuam rau cov cuab yeej ua haujlwm ruaj khov thiab kev tswj xyuas kev ua haujlwm zoo. Los ntawm kev txiav txim siab xaiv thiab teeb tsa cov txheej txheem no, nws muaj peev xwm ua kom ntseeg tau tias lub tshuab xa hluav taws xob ua haujlwm tau zoo thiab muaj kev nyab xeeb thoob plaws ntau hom kev siv-nrog rau kev lag luam, kev lag luam, thiab thaj chaw nyob.
