Lub hauv paus yog vim li cas rau qhov poob ntawm cov rwb thaiv tsev tsis kam ntawm cov cua kub khiav muaj xws li: noo noo ingress, siab - kub aging, mechanical puas, paug paug, paug paug, thiab cov khoom degradation. Ntawm cov xwm txheej no, cov dej noo ingress thiab kub kub yog ob qho tseem ceeb tshaj plaws thiab tseem ceeb ua rau.
1. Moisture Ingress (Qhov feem ntau tshwm sim)
Condensation Formation: Thaum cov pwm raug kaw tom qab ua haujlwm ntawm qhov kub thiab txias, yog tias cov av noo nyob ib puag ncig siab, cov dej vapor hauv huab cua yuav condense rau ntawm cov hlau txias, nkag mus rau hauv cov thawv sib txuas, cov khoom sib txuas, lossis cov hlua cable.
Cov Dej Txias Dej Txias: Kev sib khi tsis zoo hauv cov pwm qhov cua txias los yog cov kav dej tawg ua rau cov dej nkag mus rau hauv cov khoom hluav taws xob.
Cia hauv High-Vumidity Environments: Pwm uas tsis ua haujlwm rau lub sijhawm ntev -tshwj xeeb yog cov khoom khaws cia hauv cov chaw ua haujlwm ntub dej lossis sab nraum zoov-yog cov dej noo maj mam nkag mus rau hauv lawv cov rwb thaiv tsev.
Cov tsos mob tshwm sim: Cov nqi hluav taws xob tiv thaiv tau poob qis tom qab kaw; Kev ntsuam xyuas ua ntej rov pib dua lub kaw lus feem ntau tau nyeem qis dua 1 MΩ, txawm hais tias tus nqi yuav rov zoo ib ntus tom qab ziab.
2. Kev laus ntawm cov khoom siv rwb thaiv tsev vim muaj qhov kub thiab txias
Kev ua haujlwm ntev ntev ntawm qhov kub thiab txias: Thaum cov khoom cua sov ua haujlwm tsis tu ncua saum lawv qhov ntsuas kub, qhov thermal degradation ntawm cov ntaub ntawv rwb thaiv tsev-xws li silicone roj hmab lossis mica- tau nrawm dua.
Thermal Cycling Fatigue: Feem ntau pib thiab kaw lub kaw lus ua rau lub thermal expansion thiab contraction, ua rau tawg los yog delamination ntawm rwb thaiv tsev txheej thiab tom qab ntawd txo lub zog dielectric.
Localized Overheating: Cov cua kub tsis sib xws lossis cov cua kub tsis txaus ua rau "qhov kub kub", ua rau cov pa roj carbonization hauv cheeb tsam ntawm cov khoom siv rwb thaiv tsev thiab tsim cov kev coj ua.
Cov tsos mob tshwm sim: Cov nqi hluav taws xob tiv thaiv tau nthuav tawm ib qho zuj zus, qis qis dua lub sijhawm; txawm tias tom qab ziab, nws tsis tuaj yeem rov qab mus rau nws qhov qub txheej txheem.
3. Mechanical puas
Kev puas tsuaj thaum lub sij hawm nruab los yog tuav: Thaum lub sij hawm pwm hoisting los yog pwm-kaw txheej txheem, cables tej zaum yuav pinched los yog rub, ua rau puas cable sheaths los yog deformation ntawm sab hauv conductors.
Vibration Fatigue: Cov cuab yeej siv ua haujlwm ntev uas muaj kev co tsis tu ncua tuaj yeem ua rau cov kev sib txuas ntawm lub davhlau ya nyob twg kom xoob lossis cov xov hlau sab hauv kom tawg, ua rau muaj kev cuam tshuam luv luv lossis hauv av txhaum.
Kev puas tsuaj tshwm sim thaum lub sij hawm Machining / Kho: Cov kab hluav taws xob sab hauv yuav raug puas tsuaj thaum lub sij hawm kho pwm, xws li thaum lub sij hawm drilling lossis machining.
Cov tsos mob tshwm sim: Cov nqi hluav taws xob tiv thaiv tau poob sai sai thiab hnyav heev, feem ntau nrog cov hluav taws xob ua tiav hauv ib lub voj voog tshwj xeeb . 4. Cov kab mob sib kis
Tshaj Pwm Tshaj Tawm Tshaj Tawm: Roj-raws li cov pwm tso tawm cov neeg ua haujlwm ua raws li cov khoom siv davhlau ya nyob twg, tsim cov yeeb yaj kiab.
Roj thiab Carbon Residue: Leak hydraulic roj los yog carbon hais los ntawm cov yas decomposition deposit ntawm connector nto, yog li txo nto kuj.
Plua plav Accumulation: Rhiav plua plav nkag mus rau hauv lub thawv sib txuas; Thaum absorbing noo noo, nws tsim conductive leakage paths.
Cov tsos mob tshwm sim: Cov nqi hluav taws xob rwb thaiv tsev zoo rov qab zoo dua tom qab ntxuav, tshwj xeeb tshaj yog nyob rau hauv cov chaw txuas.
5. Ib nrab tso tawm thiab Ionization degradation
Voltage Concentration: Cov hluav taws xob ua kom pom tseeb ntawm cov npoo hlau ntse lossis cov pa tawm, tsim cov hluav taws xob feeb hluav taws xob (ib nrab tawm).
Nruam Ionization: Ozone thiab nitrogen oxides tsim los ntawm cov khoom pov tseg corrode rwb thaiv tsev, maj mam ua carbonized conductive txoj kev.
Harmonic Effects: Siab- xaj kom muaj kev sib haum xeeb hauv daim phiaj hluav taws xob ua kom muaj kev ntxhov siab, yog li ua rau muaj qhov tshwm sim ntau dua.
Cov tsos mob tshwm sim: Cov kev hloov pauv ntawm cov khoom siv hluav taws xob tiv thaiv, nrog rau lub suab "hissing" los yog ib qho tsw qab; nquag pom nyob rau hauv qis - zoo los yog aging Cheebtsam.
6. Cov khoom siv degradation lossis kev tsim khoom tsis raug
Cov Cuab Yeej Siv Hluav Taws Xob: Kev siv cov ntaub ntawv tsis zoo mica lossis cov khoom siv silicone ua rau tsis muaj cua sov thiab noo noo- muaj peev xwm ua pov thawj, ua rau lawv yooj yim rau delamination thiab nqus dej noo.
Tsis txaus Sealing Structure: Tus connector tus IP tiv thaiv qhov ntsuas tsis txaus (xws li, qis dua IP65), ua rau nws tsis tuaj yeem thaiv cov dej tsis zoo.
Thaum kawg ntawm Kev Pabcuam Lub Neej: Cov khoom siv rwb thaiv tsev tau mus txog qhov kawg ntawm nws lub neej kev pabcuam (feem ntau 5-8 xyoo), ua rau kev ua haujlwm tsis zoo.
Cov tsos mob tshwm sim: Ib txhij degradation hla ntau txoj kab; qhov teeb meem raug daws tom qab hloov cov khoom siv nrog siab -cov kev xaiv zoo.
