Yuav ua li cas txiav txim siab yog tias qhov tsawg -Voltage Switchgear tau tas sij hawm

Kev txiav txim siab seb qhov tsawg-voltage switchgear tau tas sij hawm yuav tsum muaj kev sim thiab ntsuas qhov ntsuas qhov tseem ceeb. Lub hauv paus tseem ceeb yog txhawm rau txheeb xyuas cov cuab yeej siv lub xyoo ua haujlwm (feem ntau yog 15-20 xyoo), kev siv ib puag ncig, kev saib xyuas cov ntaub ntawv, thiab ntsuas cov ntaub ntawv, zam qhov "ib- loj- haum-tag nrho" raws li lub hnub nyoog nkaus xwb.

 

Cov khoom tseem ceeb ntawm kev xeem, tus qauv tsim nyog, thiab kev txiav txim siab

Cov lus: Cov khoom kuaj|Txheem tus nqi|Kev Txiav Txim Siab

Rwb thaiv tsev tsis kam|Ntau dua los yog sib npaug rau 1 MΩ (theem-rau-theem thiab hauv av) Hauv qab 1 MΩ qhia tias rwb thaiv tsev laus los yog nqus dej noo, ua rau muaj kev pheej hmoo ntawm kev xau lossis luv luv, yuav tsum tau saib xyuas tam sim.

Kub nce|Busbar kev twb kev txuas taw tes kub nce Tsawg dua los yog sib npaug rau 70K, casing nto kub nce Tsawg dua los yog sib npaug rau 20K. Infrared thermal imaging nrhiav pom qhov kub thiab txias tsis sib xws (piv txwv li, tshaj 80 degree) qhia tias kev sib cuag tsis zoo los yog overload, uas yuav ua rau hluav taws.

Mechanical Operation Performance|Circuit Court breakers thiab disconnectors yuav tsum khiav lag luam zoo thiab tsis muaj jamming tom qab peb phau ntawv qhib thiab kaw haujlwm. Kev nyuaj, jamming, lossis kev ua haujlwm tsis tiav qhia tau hais tias hnav lossis deformation ntawm cov khoom sib kis, cuam tshuam rau kev ntseeg tau ntawm kev sib tsoo thaum muaj xwm ceev. ** Hluav taws xob Clearance thiab Creepage Distance: Ntau dua lossis sib npaug li 20 mm (nruab nrab ntawm qhov chaw nyob ntawm cov polarities sib txawv hauv lub ntsiab Circuit Court). Kev ntsuas qhov tseem ceeb tsawg dua li tus qauv yog nquag arcing, tshwj xeeb tshaj yog txaus ntshai nyob rau hauv qhov chaw ntub dej.

Grounding Continuity: Grounding resistance Tsawg dua lossis sib npaug li 4 Ω. Qhov tseem ceeb tshaj 4 Ω qhia txog kev tiv thaiv hauv av tsis ua haujlwm, tiv thaiv kev ua haujlwm tam sim no thaum ua txhaum thiab ua rau muaj kev phom sij rau tus kheej.

Kev tiv thaiv ntaus ntawv ua haujlwm yam ntxwv: Tripping tam sim no yuam kev Tsawg dua los yog sib npaug rau ± 10%. Kev sib txawv ntau dhau ntawm qhov ntsuas tus nqi los ntawm tus nqi teeb tsa tuaj yeem ua rau tsis ua haujlwm lossis kev ua haujlwm tsis zoo (nquag mus ncig), ua rau kev tiv thaiv tsis muaj nuj nqis.

Cov tsos mob thiab kev ncaj ncees: Tsis muaj deformation, corrosion, txheej tev, los yog cov qhov rooj sib txawv. Cov txee hnyav corrosion lossis thav duab deformation qhia tau tias muaj kev cuam tshuam ntev rau qhov chaw hnyav, ua rau txo qis tag nrho cov qauv lub zog thiab muaj peev xwm muaj kev nyab xeeb.

 

Comprehensive Judgement Logic:

Lub neej ua haujlwm: Ntau dua lossis sib npaug li 20 xyoo. Tus tsim lifespan tau mus txog. Txawm hais tias qhov chaw zoo li qub, cov khoom siv sab hauv (xws li cov kab hluav taws xob sib txuas thiab cov khoom siv hluav taws xob) yuav nyob ze rau qhov kawg ntawm lawv cov khoom siv hluav taws xob lossis hluav taws xob.

Yog tias ob lossis ntau dua cov khoom xeem tsis ua raws li cov qauv, txawm tias lub txee tseem tsis tau ua tiav rau nws lub neej txoj sia, nws yuav tsum raug suav hais tias "ua haujlwm tas sijhawm," thiab yuav tsum pib ua cov txheej txheem hloov pauv.

Yog tias lub txee tau ntsib ntau yam tsis ua haujlwm lossis muaj nqi kho ntau dhau, xws li yuav tsum tau kho ntau dua peb zaug hauv ib xyoos, lossis ib qho kev kho tus nqi ntau dua 40% ntawm tus nqi ntawm lub txee tshiab, nws yuav tsis muaj kev lag luam ntxiv lawm.

Yog tias qhov kev thov thauj khoom sib txawv heev, thiab cov khoom tseem ceeb ntawm lub txee tsis txaus, thiab cov khoom siv tam sim no tsis tu ncua ntau tshaj 80% ntawm cov peev txheej, nws suav tias yog kev ua haujlwm dhau, ua kom muaj kev laus, thiab yuav tsum tau kho dua tshiab.

Yog tias lub txee ua tsis tau raws li cov qauv kev nyab xeeb tam sim no, xws li tsis muaj kev tiv thaiv arc txhaum, tsis tau nruab nrog kev saib xyuas ntse, lossis tsis ua raws li qhov tseeb GB7251.1 cov cai, muaj kev pheej hmoo ua raws li.