Hlau oxide ntes (MOA) yog ib qho tseem ceeb tiv thaiv cov cuab yeej siv los tiv thaiv lub rwb thaiv tsev ntawm cov hluav taws xob xa hluav taws xob thiab cov cuab yeej hloov pauv los ntawm cov teeb meem overvoltage.Nws muaj cov lus teb ceev ceev, tiaj tus volt-ampere yam ntxwv, kev ua haujlwm ruaj khov, muaj peev xwm loj tam sim no, tsis tshua muaj hluav taws xob, thiab lub neej ntev., cov qauv yooj yim thiab lwm yam zoo, siv dav hauv kev tsim hluav taws xob, kev sib txuas lus, substation, tis thiab lwm yam tshuab.Lub tsho sib xyaw hlau oxide ntes yog ua los ntawm cov khoom siv roj hmab silicone.Piv nrog rau cov tsoos porcelain tsho ntes, nws muaj qhov zoo ntawm qhov me me, lub teeb yuag, cov qauv ruaj khov, muaj zog ua kom muaj kuab paug, thiab kev ua haujlwm tawg tau zoo.Thaum tus ntes nyob rau hauv ib txwm ua haujlwm voltage, tam sim no ntws los ntawm tus ntes tsuas yog microampere.Thaum raug overvoltage, vim qhov nonlinearity ntawm zinc oxide tsis kam, tam sim no ntws los ntawm tus neeg ntes tam sim ntawd mus txog ntau txhiab amperes, thiab tus ntes yog nyob rau hauv lub xeev ua.Tso tawm overvoltage zog, yog li zoo txwv qhov kev puas tsuaj ntawm overvoltage rau lub hwj chim kis tau tus mob thiab transformation khoom.
Qhov peb-theem ua ke sib xyaw ua ke nrog zinc oxide ntes yog ib yam tshiab ntawm cov cuab yeej tiv thaiv siv los tiv thaiv cov khoom siv hluav taws xob los ntawm kev phom sij overvoltage.Nws txwv cov theem-rau-hauv av overvoltage thaum zoo txwv cov theem-rau-theem overvoltage.Dav siv los tiv thaiv lub tshuab nqus tsev, tig lub tshuab hluav taws xob, cov nyiaj them rov qab rau cov khoom siv hluav taws xob, cov chaw tsim hluav taws xob, cov chaw nres tsheb, thiab lwm yam. Qhov kev sib koom ua ke no tau ua haujlwm rau ntau tshaj kaum xyoo, thiab nws tau raug pov thawj los ua qhov ua tau thiab ntsuas tau zoo los txwv cov overvoltage. nruab nrab ntawm theem.Lub surge arrester siv lub peev xwm loj zinc oxide resistors ua lub ntsiab tivthaiv, uas muaj cov yam ntxwv zoo volt-ampere thiab muaj peev xwm nqus cov overvoltage, thiab muab kev tiv thaiv zoo rau cov khoom tiv thaiv.Nws tau siv dav hauv cov tshuab hluav taws xob.