Cov khoom siv hluav taws xob faib hluav taws xob yog lub tsev hluav taws xob uas tsim los ntawm cov khoom siv hloov pauv, cov khoom siv tam sim no, kev tiv thaiv thiab ntsuas cov khoom siv thiab lwm yam khoom siv raws li qee qhov yuav tsum tau ua, uas yog hu ua lub zog faib khoom. Ib qho cuab yeej siv los txais thiab faib hluav taws xob hluav taws xob. Cov khoom siv hluav taws xob muaj xws li cov khoom siv hloov hluav taws xob (circuit breakers, cais cov keyboards, load switches, thiab lwm yam), cov khoom siv tiv thaiv (fuses, relays, ntes, thiab lwm yam), ntsuas cov khoom siv (tam sim no transformers, voltage transformers, ammeters, voltmeters, thiab lwm yam) thiab busbars thiab tam sim no tus neeg xyuas pib.
Cov khoom siv hluav taws xob faib hluav taws xob tuaj yeem muab faib ua cov khoom siv hluav taws xob sab hauv tsev thiab cov khoom siv hluav taws xob sab nraud raws li qhov chaw uas lawv tau teeb tsa, muab faib ua cov khoom siv hluav taws xob hluav taws xob hluav taws xob thiab cov khoom siv hluav taws xob tsawg tsawg raws li lawv qhov voltage, thiab muab faib ua tiav. cov khoom siv hluav taws xob faib hluav taws xob raws li lawv cov qauv tsim. (hloov txee) thiab prefabricated.
