Surge Protective Devices tiv thaiv cov khoom siv hluav taws xob los ntawm cov txheej txheem kev tiv thaiv lub cev, nrawm, thiab tsis siv neeg lub cev tiv thaiv raws li kev sib txuas ntawm cov khoom siv hluav taws xob sib txuas thiab cov yam ntxwv tsis sib xws, ua tiav kev tiv thaiv overvoltage rau cov khoom siv hluav taws xob.
Ua ntej, SPD tau teeb tsa nyob rau hauv qhov sib npaug ntawm sab xub ntiag ntawm tag nrho cov khoom siv hluav taws xob tiv thaiv thiab txuas nrog lub kaw lus hauv av xaim, tsim lub voj voog tiv thaiv. Nyob rau hauv ib txwm ntsuas hluav taws xob ua haujlwm ntawm cov khoom siv, SPD nyob rau hauv siab -impedance insulated lub xeev. Nws tsis shunt ib txwm ua haujlwm tam sim no, tsis tsim hluav taws xob poob qis, thiab yuav tsis cuam tshuam nrog lub zog ib txwm muaj thiab kev ua haujlwm ntawm cov khoom siv hluav taws xob.
Thaum muaj qhov txawv txav ntawm qhov hluav taws xob tsis zoo nkag mus rau hauv Circuit Court thiab ua rau cov khoom siv hluav taws xob, SPD's sab hauv nonlinear rhiab Cheebtsam tam sim ntawd pom cov teeb liab overvoltage thiab ua tiav qhov hloov pauv impedance hauv microseconds. Cov cuab yeej hloov pauv los ntawm kev ua haujlwm siab mus rau qhov tsis muaj zog tam sim ntawd, ua rau siab - nrawm nrawm ntawm cov xaim nyob thiab hauv av xaim.
Tom qab ntawd, qhov tam sim no loj heev surge tam sim no tsim los ntawm lub overvoltage yog kiag li hloov mus rau hauv av system los ntawm SPD tus qis -kuj channel, es tsis txhob dhau los ntawm lub internal circuits, chips, thiab cov khoom ntawm cov khoom siv hluav taws xob. Nyob rau tib lub sijhawm, SPD clamps qhov txawv txav ntawm qhov hluav taws xob mus rau qhov ruaj ntseg tsis tshua muaj nqi hluav taws xob, tshem tawm cov kev cuam tshuam overvoltage ntawm cov khoom siv.
Tom qab lub zog hluav taws xob tau tso tawm tag nrho thiab qhov hluav taws xob hluav taws xob rov qab mus rau tus qauv ntsuas tus nqi, SPD tau rov qab mus rau qhov siab -tsis kam standby lub xeev, txiav tawm hauv av tawm channel. Qhov no yog - lub sij hawm ceev ceev txheej txheem tiv thaiv kev puas tsuaj ntawm cov cuab yeej rwb thaiv tsev, burnout ntawm hluav taws xob Cheebtsam, thiab Circuit Court luv - Circuit Court faults tshwm sim los ntawm overvoltage. Rau qhov me me tsis tu ncua -amplitude voltage fluctuations thiab surges, SPD tuaj yeem ua tiav kev tiv thaiv kev tiv thaiv txuas ntxiv, txo cov cuab yeej kev laus thiab tsis ua hauj lwm uas tshwm sim los ntawm kev cuam tshuam ntev - voltage.