Overvoltage protectors ua lub luag haujlwm tseem ceeb hauv kev tiv thaiv kev ua haujlwm tsis zoo xws li xob laim surges, hloov cuam tshuam, thiab hluav taws xob zaus voltage nce. Lawv cov txiaj ntsig tsis yog nyob ntawm qhov ua tau zoo ntawm cov cuab yeej nws tus kheej nkaus xwb tab sis kuj nyob ntawm kev xaiv kev tshawb fawb, kev teeb tsa kom raug, thiab kev saib xyuas tus qauv. Kev paub thiab siv cov tswv yim tsim nyog tuaj yeem txhim kho kev tiv thaiv kev ntseeg tau zoo, ua kom lub neej ntev ntawm cov cuab yeej siv, thiab ua kom muaj kev tiv thaiv zoo tshaj plaws ntawm cov tshuab hluav taws xob.
Ua ntej, cov txheej txheem xaiv yuav tsum ua tib zoo xav txog cov yam ntxwv ntawm lub cev thiab hom kev pheej hmoo. Lub ntsiab lus tseem ceeb yog txhawm rau ntsuas qhov ntsuas qhov ntsuas hluav taws xob, qhov siab tshaj plaws kev ua haujlwm tsis tu ncua (MCOV), muaj peev xwm surge tam sim no amplitude, thiab cov yam ntxwv waveform ntawm qhov chaw teeb tsa, zam kev siv cov kev qhia tshwj xeeb raws li kev paub dhau los. Rau cov cheeb tsam uas muaj cua daj cua dub ntau dhau los yog kev tiv thaiv hluav taws xob ncaj qha, kev daws teeb meem nrog lub peev xwm loj tam sim no, lub sijhawm teb luv luv, thiab ob lossis ntau theem ntawm kev tiv thaiv ua ke yuav tsum raug xaiv. Hauv kev lag luam ib puag ncig nrog kev hloov pauv ntau zaus lossis kev thauj khoom ntawm inverter, kev saib xyuas yuav tsum tau them rau tus neeg tiv thaiv lub peev xwm los tiv thaiv siab - zaus zaus overvoltages, thaum tseem xav txog nws lub peev xwm tuav tam sim no.
Qhov laj thawj ntawm qhov chaw teeb tsa thiab cov xaim hluav taws xob ncaj qha cuam tshuam rau kev tiv thaiv. Kev paub qhia tau hais tias overvoltage protectors yuav tsum tau muab tso rau ze li sai tau rau lub hwj chim input ntawm cov khoom tiv thaiv, shortening qhov ntev ntawm kev sib txuas ntawm cov xov hlau kom txo tau qhov tsis zoo ntawm cov hlau lead inductance ntawm cov lus teb ceev thiab voltage limiting nyhuv. Nyob rau hauv ntau qhov kev tiv thaiv -theem, qhov kev npaj yuav tsum ua raws li lub hauv paus ntsiab lus ntawm "ua ntej ntxhib, zoo tom qab; nyob ze ua ntej, deb tom qab," tso cai rau tus thawj tiv thaiv los daws feem ntau ntawm lub zog dissipation, thaum lub thib ob tiv thaiv muab nplua clamping, tsis txhob tiv thaiv qhov muag tsis pom kev. Cov xaim hauv av yuav tsum yog qhov qis - txoj kev impedance, thiab nws tus ntoo khaub lig- ntu ntu thiab nteg txoj kev yuav tsum ua kom tau raws li qhov yuav tsum tau ua rau impulse tam sim no dissipation, kom ntseeg tau tias muaj kev sib txuas ruaj khov rau cov phiaj xwm hauv av kom tsis txhob muaj hluav taws xob ntau dhau lossis cov khoom siv puas tsuaj vim tsis zoo hauv av.
Cov txheej txheem rau kev sib koom ua ke kuj tseem ceeb heev. Overvoltage tiv thaiv feem ntau ua ke nrog cov hluav taws xob hluav taws xob, fuses, lossis cov khoom siv thermal mus ncig kom ua tiav kev sib cais muaj kev nyab xeeb nyob rau hauv kev tsis tu ncua overcurrent lossis degradation. Qhov tsis sib xws ntawm cov khoom tiv thaiv nqes hav yuav tsum raug teeb tsa raws li qhov muaj peev xwm tawg ntawm tus tiv thaiv thiab lub kaw lus luv luv - theem tam sim no hauv Circuit Court kom ntseeg tau tias kev sib koom ua haujlwm thiab tiv thaiv kev tsis ncaj ncees lossis tsis ua haujlwm. Tib lub sijhawm, kev tsis sib haum xeeb nrog lub varistor lossis surge suppression circuits hauv cov khoom tiv thaiv yuav tsum zam; tag nrho cov kev ntsuam xyuas compatibility yuav tsum tau ua thaum tsim nyog.
Thaum lub sijhawm ua haujlwm thiab kev saib xyuas, yuav tsum tau tsim ib qho kev tshuaj ntsuam xyuas thiab kev ntsuas qhov xwm txheej. Cov txheej txheem muaj xws li saib xyuas tus tiv thaiv sab nrauv rau cov cim ntawm kev kub nyhiab, tawg, lossis tawg; siv cov cuab yeej kuaj mob tshwj xeeb lossis tsim ua - nyob rau hauv cov xwm txheej ntsuas los xyuas cov dej xau tam sim no thiab qib ntawm degradation; thiab tshawb xyuas cov av txuas mus ntxiv. Rau cov khoom siv raug kub kub, cov av noo siab, tshuaj tsuag ntsev, lossis cov tshuaj tiv thaiv corrosion rau lub sijhawm ntev, kev tshuaj xyuas yuav tsum luv luv, thiab cov ntsaws ruaj ruaj lossis cov ntaub thaiv npog yuav tsum tau hloov thaum tsim nyog. Kev sau txhua cov ntaub ntawv tshuaj xyuas thiab kev saib xyuas ua haujlwm muab lub hauv paus rau kev kwv yees lub neej thiab kev tswj xyuas cov khoom seem.
Tsis tas li ntawd, nyob rau hauv cov txheej txheem nyuaj lossis cov txheej txheem rhiab heev, cov ntaub ntawv khaws tseg tsis tu ncua lossis siab -oscilloscopes ceev tuaj yeem siv los ntes cov ntawv tshaj tawm ntawm qhov hluav taws xob thiab muab piv nrog tus tiv thaiv tus yam ntxwv nominal teb los txheeb xyuas nws cov txiaj ntsig hauv kev ua haujlwm tiag tiag, yog li ua kom zoo rau kev xaiv thiab kev teeb tsa.
Zuag qhia tag nrho, cov txheej txheem rau kev siv overvoltage protectors yog kev koom ua ke thoob plaws hauv tag nrho cov txheej txheem ntawm kev xaiv thiab kev sib txuam, kev txhim kho kom zoo, kev sib koom ua ke, thiab kev tswj xyuas. Kev siv cov txheej txheem no ua tau zoo tuaj yeem tsim kom muaj kev tiv thaiv hluav taws xob muaj zog nyob rau hauv qhov chaw sib txawv thiab muaj kev pheej hmoo, muab kev ntseeg siab rau kev ua haujlwm ruaj ntseg thiab ruaj khov ntawm cov tshuab hluav taws xob.
