Daim ntawv thov ntawm Lightning Arresters thiab Surge Protective Devices

Txawm hais tias ob qho tib si hluav taws xob ntes thiab surge tiv thaiv cov cuab yeej (SPDs) tuaj yeem tiv thaiv cov khoom siv hluav taws xob, lawv txawv qhov kev ua tau zoo thiab cov qauv siv.

xob laim ntesFeem ntau tiv thaiv cov khoom siv hluav taws xob los ntawm kev puas tsuaj los ntawm xob laim lossis overvoltages los ntawm kev tswj lub sijhawm thiab qhov loj ntawm kev ua raws li tam sim no, thiab lawv tuaj yeem txwv ob qho tib si lub sijhawm thiab lub zog ntawm kev ua raws li tam sim no. Lawv kuj feem ntau hu ua overvoltage protectors los yog overvoltage limiters hauv kev ua haujlwm engineering.

Raws li rausurge tiv thaiv cov cuab yeej, lawv lub luag haujlwm tseem ceeb yog kom nqus tau siab -zog sai sai hauv circuits, tiv thaiv cov cuab yeej los ntawm kev cuam tshuam los ntawm cov hluav taws xob hluav taws xob. Zoo dua lub npe hu ua hluav taws xob tiv thaiv, lawv yog cov khoom siv hluav taws xob tshwj xeeb tsim los tiv thaiv cov khoom siv hluav taws xob, cov twj paj nruag, ntsuas, thiab kab sib txuas lus.

Ob hom kev tiv thaiv no sib txawv heev hauv ob qho tib si hauv kev ua haujlwm thiab cov xwm txheej siv tau, tab sis ob qho tib si yog cov khoom tiv thaiv tseem ceeb hauv cov tshuab hluav taws xob. Ib lo lus nug ntawm cov kws kho mob yog: Dab tsi yog qhov sib txawv ntawm cov hluav taws xob ntes hluav taws xob tiv thaiv hluav taws xob thiab hluav taws xob tiv thaiv hluav taws xob (SPDs)?

(1) Kev siv hluav taws xob sib txawv

Hluav taws xob ntes muaj feem xyuam rau ntau theem ntawm qhov hluav taws xob, los ntawm qhov tsis tshua muaj hluav taws xob ntawm 0.4 kV mus rau ultra-siab voltage ntawm 500 kV, uas muaj cov kev siv dav dav. Hauv qhov sib piv, Surge Protective Devices (SPDs) feem ntau yog siv nyob rau hauv qhov chaw muaj hluav taws xob qis dua 1 kV, muab kev tiv thaiv overvoltage rau qis -voltage zaus.

(2) Cov khoom tiv thaiv sib txawv

Hluav taws xob ntes yog tsim los tiv thaiv cov khoom siv hluav taws xob loj. SPDs, txawm li cas los xij, feem ntau muaj kev tiv thaiv rau cov teeb liab thib ob lossis lub davhlau ya nyob twg fais fab mov me me xws li cov cuab yeej hluav taws xob thiab ntsuas.

(3) Qhov sib txawv ntawm cov rwb thaiv tsev thiab tiv taus qhov voltage

Cov khoom siv hluav taws xob thiab cov khoom siv hluav taws xob sib txawv heev nyob rau hauv lawv cov qib siab voltage. Yog li ntawd, qhov seem hluav taws xob uas tsim los ntawm cov khoom siv tiv thaiv overvoltage yuav tsum sib phim rau qib tiv thaiv hluav taws xob ntawm cov khoom tiv thaiv.

(4) Cov haujlwm sib txawv ntawm kev teeb tsa

Hluav taws xob ntes feem ntau yog ntsia rau ntawm lub hauv paus system, feem ntau yog thaiv cov hluav taws xob surges thiab tiv thaiv lawv los ntawm ncaj qha invading overhead kab thiab cov khoom siv hluav taws xob ua rau muaj kev puas tsuaj, yog li ntawd lawv feem ntau mounted ntawm txoj hauj lwm nkag. Feem ntau SPDs tau nruab rau hauv qhov nruab nrab, muab kev tiv thaiv ntxiv tom qab xob laim surges yog ib feem los yog tsis tiav los ntawm xob laim ntes. Li no, SPDs feem ntau yog teem rau ntawm cov kab hluav taws xob tawm, cov teeb liab circuits thiab lwm qhov chaw.

 

(5) Txawv tawm tam sim no muaj peev xwm

Hluav taws xob ntes tau mob siab rau kev tiv thaiv hluav taws xob overvoltage, yog li lawv khav theeb loj tawm tam sim no muaj peev xwm. Cov khoom siv hluav taws xob muaj cov rwb thaiv tsev qis dua piv nrog cov khoom siv hluav taws xob zoo tib yam, uas yuav tsum tau SPDs los tiv thaiv hluav taws xob overvoltage thiab hloov overvoltage. Txawm li cas los xij, SPDs feem ntau yog ntsia ntawm lub davhlau ya nyob twg thiab tsis txuas ncaj qha rau cov kab nyiaj siv ua haujlwm; cov xob laim tam sim no ncav cuag SPD raug txo tom qab tam sim no txwv los ntawm theem dhau los. Yog li, SPDs tsis xav tau lub peev xwm loj tam sim no, thiab qhov tseem ceeb yog los tswj cov seem hluav taws xob zoo.

(6) Lwm qhov sib txawv tseem ceeb

xob laim ntes thiab SPDs kuj sib txawv heev nyob rau hauv tej yam xws li rwb thaiv tsev theem thiab qhov tseem ceeb tsis muaj kev txhawj xeeb.

(7) Cov yam ntxwv thiab qhov zoo ntawm Surge Protective Devices

SPDs yog tshwj xeeb tshaj yog haum rau refined tiv thaiv ntawm tsawg-voltage fais fab mov systems. SPDs ntawm cov kev qhia tshwj xeeb tuaj yeem xaiv raws li cov khoom siv hluav taws xob AC lossis DC sib txawv. Yog hais tias cov khoom siv davhlau ya nyob twg nyob deb ntawm yav dhau los -theem SPD, lub Circuit Court yog nquag oscillating overvoltage lossis induced overvoltage. Txhim kho SPDs nyob ze cov cuab yeej siv dav hlau rau kev tiv thaiv lub zog thiab kev sib koom tes nrog rau pem hauv ntej -theem SPDs tuaj yeem ua tiav qhov kev tiv thaiv zoo.

(8) Cov ntaub ntawv tseem ceeb sib txawv

Hluav taws xob ntes feem ntau yog ua los ntawm zinc oxide, teej tug mus rau hlau oxide varistors (MOVs). Cov ntaub ntawv tseem ceeb ntawm SPDs yog qhov nyuaj, sib txawv nrog cov qib siab tiv thaiv thiab kev tiv thaiv qib (raws li IEC 6132 tus qauv). Hais txog kev tsim, SPDs yog qhov zoo tshaj li cov cuab yeej tiv thaiv hluav taws xob zoo tib yam.

(9) Kev ua haujlwm tsis zoo

Los ntawm txoj kev xav, xob laim ntes tau qis dua rau SPDs raws li lub sijhawm teb, qhov cuam tshuam hluav taws xob, kev tiv thaiv kev muaj peev xwm thiab kev laus.

 

peb lub tuam txhab muaj ntau hom xob laim ntes,European -style rear xob laim ntes,10 ~ 35kV Shielded pluggable xob laim ntes, tau dav siv hauv switchgear, RMU, fais fab substation.

 

Yog xav paub ntxiv, plstiv tauj peb