Nkag siab txog cov dej num thiab qhov tseem ceeb ntawm surge protectors (SPDs)

Surge tiv thaiv cov cuab yeej(SPDs)ua lub luag haujlwm tseem ceeb hauv kev tiv thaiv cov hluav taws xob faib hluav taws xob los ntawm overvoltage thiab surge tam sim no. Lub peev xwm ntawm SPD los txwv cov overvoltages hauv lub network faib los ntawm kev hloov pauv tam sim no nyob ntawm cov khoom tiv thaiv surge, cov qauv siv hluav taws xob ntawm SPD, thiab kev sib txuas rau lub network faib. SPDs yog tsim los txwv tsis pub dhau ib ntus overvoltages thiab hloov pauv inrush tam sim no, lossis ob qho tib si. Nws muaj tsawg kawg yog ib qho kev tivthaiv nonlinear. Cias muab tso, SPDs yog tsim los txwv tsis pub dhau ib ntus overvoltages los tiv thaiv cov khoom puas.

Qhov tseem ceeb ntawm SPD tsis tuaj yeem hais ntau dhau, tshwj xeeb tshaj yog nyob rau niaj hnub no thiab hnub nyoog uas cov khoom siv hluav taws xob nkag siab zoo nyob thoob plaws hauv thaj chaw nyob thiab kev lag luam. Raws li kev cia siab rau cov khoom siv hluav taws xob thiab cov khoom siv nce ntxiv, qhov kev pheej hmoo ntawm kev puas tsuaj los ntawm lub zog hluav taws xob thiab cov overvoltages dhau los ua qhov tseem ceeb. SPDs yog thawj kab ntawm kev tiv thaiv hom hluav taws xob cuam tshuam, kom ntseeg tau tias cov cuab yeej muaj txiaj ntsig raug tiv thaiv thiab tiv thaiv kev poob qis vim kev puas tsuaj.

Cov haujlwm ntawm SPD muaj ntau yam. Nws tsis tsuas yog txwv tsis pub dhau ib ntus overvoltages los ntawm kev hloov pauv tam sim no, tab sis kuj ua kom ntseeg tau tias lub zog faib hluav taws xob tseem ruaj khov thiab txhim khu kev qha. Los ntawm kev hloov cov surges tam sim no, SPDs pab tiv thaiv kev ntxhov siab uas tuaj yeem ua rau muaj kev puas tsuaj ntawm cov khoom siv hluav taws xob, kev puas tsuaj rau cov khoom siv thiab muaj peev xwm muaj kev nyab xeeb. Tsis tas li ntawd, lawv muab qib kev tiv thaiv rau cov khoom siv hluav taws xob rhiab heev uas tej zaum yuav raug rau qhov hloov pauv me me.

Cov khoom siv hauv SPD ua lub luag haujlwm tseem ceeb hauv nws cov txiaj ntsig tag nrho. Nonlinear Cheebtsam yog tsim los tiv thaiv cov khoom sib txuas los ntawm kev muab txoj hauv kev uas tsis muaj impedance rau surge tam sim no los teb rau overvoltage. SPD cov qauv siv tshuab kuj tseem txhawb nqa nws qhov kev ua tau zoo, vim tias nws yuav tsum muaj peev xwm tiv taus lub zog tsis muaj zog. Tsis tas li ntawd, kev sib txuas rau lub zog xa hluav taws xob kuj tseem ceeb heev, vim tias kev txhim kho kom raug thiab hauv av yog qhov tseem ceeb rau kev ua haujlwm zoo ntawm SPD.

Thaum xav txog kev xaiv SPD thiab kev teeb tsa, nws yog ib qho tseem ceeb rau kev soj ntsuam cov kev xav tau tshwj xeeb ntawm cov khoom siv hluav taws xob thiab cov khoom siv uas nws txhawb nqa. SPDs muaj nyob rau hauv ntau hom thiab kev teeb tsa, suav nrog Hom 1, Hom 2 thiab Hom 3 cov khoom siv, txhua qhov tsim nyog rau kev siv sib txawv thiab qhov chaw teeb tsa. Nws raug nquahu kom sab laj nrog tus kws tshaj lij uas tsim nyog los xyuas kom meej tias SPD raug xaiv kom raug thiab teeb tsa kom muab qib tsim nyog ntawm kev tiv thaiv.

Hauv cov ntsiab lus, surge tiv thaiv cov cuab yeej (SPDs) ua lub luag haujlwm tseem ceeb hauv kev tiv thaiv cov hluav taws xob faib hluav taws xob thiab cov khoom siv hluav taws xob rhiab heev los ntawm kev puas tsuaj ntawm overvoltage thiab surge tam sim no. Lawv lub peev xwm los txwv tsis pub dhau ib ntus overvoltages thiab hloov pauv inrush tam sim no yog qhov tseem ceeb rau kev tswj xyuas kev ruaj ntseg thiab kev ntseeg siab ntawm cov tshuab hluav taws xob. Raws li cov khoom siv hluav taws xob txuas ntxiv mus ntxiv, qhov tseem ceeb ntawm SPDs hauv kev tiv thaiv hluav taws xob surges thiab overvoltages tsis tuaj yeem kwv yees. Kev xaiv kom raug, kev teeb tsa thiab kev saib xyuas ntawm SPDs yog qhov tseem ceeb los ua kom muaj kev tiv thaiv txuas ntxiv ntawm cov cuab yeej muaj txiaj ntsig thiab kev ua haujlwm tsis cuam tshuam ntawm cov tshuab hluav taws xob.