High-voltage isolating keyboards ua kom muaj kev nyab xeeb ntawm cov khoom siv hluav taws xob high-voltage thiab cov cuab yeej siv thaum tu ua haujlwm, thiab ua lub luag haujlwm ntawm kev sib cais voltage. Lawv tsis tuaj yeem siv los txiav tawm, muab tso rau hauv qhov chaw thauj khoom tam sim no, lossis tawg luv-circuit tam sim no. Lawv tsuas yog siv tau rau qee qhov kev hloov pauv uas tsis ua kom muaj zog arcs, uas yog, lawv tsis muaj arc extinguishing zog. Raws li qhov chaw teeb tsa, lawv tau muab faib ua hom sab hauv tsev thiab sab nraum zoov, thiab raws li tus naj npawb ntawm cov ncej insulating, lawv tau muab faib ua ib qho ncej, ob chav ncej, thiab peb ncej. Muaj cov cuab yeej xaiv tau rau txhua qib voltage. Nws tseem tuaj yeem tso siab rau kev cais tawm ib feem ntawm cov khoom siv hluav taws xob siab uas yuav tsum tau kaw los ntawm qhov chaw nyob kom ntseeg tau tias muaj kev nyab xeeb ntawm kev saib xyuas kev ua haujlwm. Cov kev sib cuag ntawm high-voltage isolating hloov yog tag nrho cov raug rau huab cua thiab muaj pom tseeb disconnection ntsiab lus. Qhov kev rho tawm tsis muaj qhov hluav taws xob tua hluav taws xob, yog li nws tsis tuaj yeem siv los txiav tawm tam sim no lossis luv-circuit tam sim no. Txwv tsis pub, nyob rau hauv qhov kev txiav txim ntawm high voltage, lub disconnection point yuav tsim ib tug muaj zog arc, uas yog nyuaj rau tua los ntawm nws tus kheej, thiab tej zaum yuav txawm ua rau arcing (kwv yees rau hauv av los yog theem-rau-theem luv luv Circuit Court), hlawv cov khoom, thiab muaj kev phom sij. tus kheej kev nyab xeeb. Qhov no yog qhov hu ua "load-pulling isolating switch" loj heev.
High-voltage isolating keyboards kuj tseem siv tau los hloov qee lub voj voog los hloov kev ua haujlwm ntawm lub cev. Piv txwv li: Hauv ob lub tsheb npav, lub tshuab hluav taws xob muaj hluav taws xob tuaj yeem siv los hloov lub voj voog khiav ntawm ib lub npav mus rau lwm qhov.