Surge yog hais txog lub ncov ntawm instantaneous tshaj qhov stability, nrog rau surge voltages thiab surge currents. Kev loj hlob ntawm cov khoom siv hluav taws xob feem ntau yog los ntawm ob qho laj thawj: sab nraud (xws li xob laim) thiab sab hauv (cov khoom siv hluav taws xob pib thiab nres, thiab lwm yam). Cov yam ntxwv ntawm surges feem ntau luv heev. Lub overvoltage tshwm sim los ntawm xob laim yog feem ntau nyob rau hauv micro-thib ob theem, qhov overvoltage tshwm sim los ntawm cov khoom siv hluav taws xob yog feem ntau nyob rau hauv milliseconds, tab sis tam sim no voltage thiab tam sim no loj heev, thiab nws yog heev feem ntau siv cov khoom siv hluav taws xob thiab cov cable yog teeb meem, yog li tus surge protector yuav tsum tau tiv thaiv lawv. Surge protector, lus Askiv lub npe Surge Protective Device, hu ua SPD, yog ib qho khoom siv hluav taws xob los muab kev tiv thaiv kev nyab xeeb rau ntau yam khoom siv hluav taws xob, kev ntsuas, thiab kev sib txuas lus, feem ntau yog txwv tsis pub dhau qhov hluav taws xob thiab cov dej ntws tawm. Lub surge protector feem ntau nyob rau hauv parallel nrog cov khoom tiv thaiv. Thaum ib qho overvoltage tsim tawm, nws tuaj yeem ua raws li kev sib cais thiab qhov voltage siab. Tiv thaiv kom tsis txhob muaj dej ntau dhau los ntawm kev puas tsuaj rau lub cuab yeej. Cov ntsiab lus tseem ceeb ntawm cov surge protector yog cov khoom siv tsis yog hauv nruab nrab. Raws li qhov sib txawv nonlinear Cheebtsam, lub surge protector tuaj yeem muab faib ua hom hloov pauv (cov ntsiab lus tseem ceeb yog tshem tawm qhov kev tshem tawm) thiab txwv kev txwv (cov ntsiab lus tseem ceeb yog lub siab rhiab heev). Txawm hais tias qhov sib txawv ntawm qhov paug tawm thiab kev ua haujlwm ntawm lub siab rhiab heev yog qhov sib txawv, cov yam ntxwv tseem ceeb yog qhov zoo sib xws: thaum tsis muaj overvoltage, lawv impedance siab heev, feem ntau yog megapometh, uas yuav luag sib npaug ntawm kev sib txuas. Thaum ib qho overvoltage tshwm sim, lub impedance tau poob sai sai rau ntau lub teb chaws Europe. Lub surge tam sim no yuav ntws mus rau hauv av los ntawm lub surge protector, thiab yuav tsis nkag mus rau hauv cov khoom, thiab vim hais tias lub impedance ntawm lub surge protector yog me me, nws ob tug hluav taws xob voltage kuj yog me me, thiab vim hais tias ntawm lub parallel ntawm nws thiab cov khoom tiv thaiv. , nws yuav tiv thaiv cov cuab yeej los ntawm kev tiv thaiv qhov hluav taws xob loj. Nyob rau hauv txoj kev no, cov effluent thiab txwv cov teebmeem yog ua si.