Insulators ua si ob txoj haujlwm yooj yim hauv HV phab ntsa bushing overhead kis kab, uas yog, txhawb cov xov hlau thiab tiv thaiv tam sim no rov qab los rau hauv av. Ob txoj haujlwm ntawm disc insulators yuav tsum tau lav. Kev ua tsis tiav vim muaj kev ntxhov siab ntawm electromechanical, txwv tsis pub lub insulator yuav tsis muaj kev cuam tshuam loj, thiab nws yuav ua rau kev puas tsuaj rau cov kev pabcuam thiab kev ua haujlwm ntawm tag nrho cov kab.
High-voltage insulators yog cov khoom siv hluav taws xob uas tuaj yeem tso tawm hluav taws xob lossis hluav taws xob dhau lub zog thaum lub sijhawm ua haujlwm ntawm lub zog hluav taws xob, tiv thaiv cov khoom siv hluav taws xob los ntawm kev phom sij tshaj qhov hluav taws xob tam sim, thiab txiav tawm qhov kev ywj pheej los tiv thaiv cov kab ke hauv av luv luv. Lub teeb ntes hluav taws xob feem ntau yog txuas nrog ntawm tus neeg xyuas pib nyob thiab hauv av, thiab txuas nrog cov khoom siv tiv thaiv. Thaum tus nqi overvoltage nce mus txog qhov kev khiav hauj lwm voltage, tus ntes tam sim ntawd ua, ntws los ntawm tus nqi, txwv lub overvoltage amplitude, thiab tiv thaiv cov rwb thaiv tsev ntawm cov khoom. Tom qab tus nqi hluav taws xob zoo li qub, tus neeg ntes tau sai sai rov qab mus rau nws lub xeev qub kom paub meej tias lub zog ib txwm muaj rau lub cev. Zoo sib xws rau cov degree ntawm kev sib kis ntawm insulators yog qhov loj ntawm lawv cov dej ntws tam sim no. Yog li ntawd, kev tshawb pom ntawm cov xau tam sim no ntawm high-voltage insulators los ntawm high-voltage load keyboards muaj qhov tseem ceeb hauv engineering.
Hluav taws xob ntes yog cov cuab yeej siv nyob rau hauv substations los tiv thaiv cov cuab yeej los ntawm xob laim shocks. Thaum hluav taws xob poob siab nthwv dej nkag mus rau hauv lub substation raws txoj kab tshaj qhov kev tiv thaiv qib ntawm tus ntes. Tus ntes tso tawm ua ntej, thiab cov phab ntsa high-voltage bushing hloov cov xob laim tam sim no Tom qab tus neeg xyuas pib zoo tau nkag mus rau hauv lub ntiaj teb, cov cuab yeej siv hauv av yog siv los txwv cov hluav taws xob hluav taws xob hauv qab qhov hluav taws xob cuam tshuam ntawm cov cuab yeej tiv thaiv, yog li ntawd. cov khoom siv hluav taws xob tiv thaiv. Raws li qhov kev txiav txim ntawm lawv txoj kev loj hlob, xob laim ntes tau muab faib ua: kev tiv thaiv qhov sib txawv - daim ntawv yooj yim ntawm tus ntes; tubular ntes - kuj muaj qhov sib txawv tiv thaiv, tab sis nws tuaj yeem tua cov arc los ntawm nws tus kheej tom qab tso tawm; valve hom ntes - ib qho kev sib kis ib leeg Muab faib ua ntau qhov luv luv, thiab ntxiv cov tsis-linear tiv thaiv los txhim kho kev tiv thaiv kev ua haujlwm; magnetic blow arrester - siv qhov sib nqus tshuab qhov sib txawv los txhim kho lub arc extinguishing muaj peev xwm. Nyob rau tib lub sij hawm, nws kuj muaj peev xwm los txwv internal overvoltage; zinc oxide arrester - siv kom zoo dua ntawm qhov zoo tshaj plaws volt-ampere yam ntxwv ntawm zinc oxide li qub (tsis tshua muaj kab, siab-voltage fuses muaj cov yam ntxwv tsis zoo ntawm cov dej ntws loj. nyob rau hauv ib txwm muaj hwj chim zaus voltage), lub high-voltage load hloov muaj qhov zoo ntawm tsis muaj qhov sib txawv, tsis muaj freewheeling thiab tsis tshua muaj hluav taws xob seem, thiab nws kuj muaj peev xwm txwv internal overvoltage thiab yog dav siv.
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