Capacitor Burnout nyob rau hauv Reactive Power Compensation Systems: Distinguishing ntawm Internal Failure thiab External Failure
Jun 09, 2026| Hauv qis-voltage reactive fais fab kev them nyiaj systems, capacitor burnout yog ib qho ntawm feem ntau tsis ua hauj lwm. Ntawm - cov neeg ua haujlwm hauv chaw feem ntau ntsib kev tsis sib haum xeeb txog seb qhov teeb meem puas yog los ntawm cov capacitor tsis zoo lossis teeb meem kev teeb tsa / lub kaw lus. Raws li cov duab hlawv thiab cov ntaub ntawv sib txuas lus los ntawm qhov chaw, tsab xov xwm no qhia meej cov txheej txheem los txheeb xyuas cov hauv paus hauv paus, ua kom yooj yim lub luag haujlwm txhais thiab kev kho kom raug.
1. Core Logic: Qhov "Ignition Point" sib txawv kiag li
- Capacitor burnout tshwm sim thaum qhov kub hauv zos tshaj cov khoom siv rwb thaiv tsev, ua rau carbonization, luv Circuit Court, thiab hluav taws kub. Lub hauv paus chiv keeb ntawm cov cua sov no ncaj qha txiav txim lub hauv paus ua rau:
- Internal Failure: Lub tshav kub / luv Circuit Court yog los ntawm sab hauv lub capacitor, kis tawm sab nraud los ntawm cov khoom siv sab hauv.
- External Failure: Lub tshav kub / luv Circuit Court yog los ntawm kev sib txuas sab nraud lossis cov tshuab, cuam tshuam rau lub capacitor los ntawm sab nraud hauv.
2. Ntawm -Site Quick Identification: 3 Cov ntsiab lus tseem ceeb
2.1 Burnout Pib taw tes thiab kis kev taw qhia
| Hom tsis ua hauj lwm | Pib Point | Kev Taw Qhia | Tej yam ntawm -Site Features |
|---|---|---|---|
| Capacitor Internal Failure | Internal Cheebtsam ntawm lub capacitor | Sab hauv- tawm: Sab hauv tawg → Tank bulging/explosion → Terminal thiab hlau puas | Lub tank bulges ua ntej, qhov kev nyab xeeb vents activates los yog ruptures, thiab lub davhlau ya nyob twg / hlau kev puas tsuaj yog thib ob rau lub sab hauv tawg thiab kub. |
| External Failure | Terminals/wires/circuits | Sab nraum-hauv: Tsis zoo lub davhlau ya nyob twg tiv thaiv cua sov → Hlau rwb thaiv tsev carbonization → Siab- kub puas tsuaj rau capacitor leads | Terminals thiab xov hlau blacken thiab carbonize ua ntej; lub capacitor tank tseem nyob ruaj khov, tsuas yog me me scorching ntawm cov coj, txuam rau qhov chaw raws nraim. |
2.2 Cov xwm txheej ntawm lub tank Capacitor
Lub tank hlau yog ib qho tseem ceeb qhia txog yam tsis ua hauj lwm:
- Internal Failure: Lub tank feem ntau qhia bulging, deformation, cracking, los yog to, thiab lub qhov cua kev nyab xeeb yuav luag ib txwm qhib. Kev puas tsuaj sab hauv tsim kom muaj cua sov thiab roj ntau dhau, ua rau lub siab tsim thiab tawg lub tank lossis qhov cua.
- Kev Ua Haujlwm Sab Nraud: Lub tank tseem tsis muaj kev puas tsuaj, tsis muaj bulging, deformation, los yog to, thiab cov xim txheej feem ntau tsis zoo, tsuas yog me me scorching nyob ze ntawm lub terminals. Cov cua sov los ntawm kev sib txuas sab nraud yog tsis txaus los tsim kom muaj kev siab sab hauv rau bulging.
2.3 Distribution and Severity of Burn Marks
- Internal Failure: Cov cim hluav taws kub hnyav hnyav dua ntawm lub capacitor nws tus kheej dua li ntawm cov terminals/wires. Cov khoom siv sab hauv thiab cov khoom siv dielectric raug rhuav tshem, feem ntau nrog dielectric splatter. Terminal / hlau carbonization yog qhov kev puas tsuaj thib ob.
- External Failure: Cov cim hluav taws kub hnyav hnyav dua ntawm cov khoom siv hluav taws xob / cov xaim tshaj li ntawm lub capacitor. Terminal blocks thiab hlau rwb thaiv tsev yog tag nrho carbonized thiab melted, thaum lub capacitor tank thiab sab hauv cov khoom tsuas yog cua sov- puas.
3. Hais txog cov kev xav tsis zoo ntawm koj lub xaib
Misconception 1: "Yuav ua li cas yuav ib tug capacitor hlawv nyob ntawm tej? Capacitors yuav ua tsis tiav los yog poob peev xwm."
- Ntau tus ntseeg tias cov capacitors tsuas yog ua tsis tiav los ntawm "tsis muaj peev xwm" lossis "sab hauv tawg," tsis yog los ntawm cov xov hlau. Txawm li cas los xij, kev sib cuag ntawm lub davhlau ya nyob twg tsis zoo tuaj yeem ua rau cov xov hlau tsis ua ntej, nrog rau lub capacitor cuam tshuam thib ob:
- Loose terminal bolts, oxidized contact nto, los yog crimped lugs ua rau muaj kev tiv thaiv siab.
Tam sim no dhau los ntawm qhov siab -kev tiv thaiv kev sib txuas ua kom sov ntawm \\(P=I^2R\\), tsim kom muaj lub voj voog tsis zoo:looseness → cua sov → ntau looseness → kub ntau.
- Qhov kub nce siab melts cov hlau rwb thaiv tsev, hlawv lub davhlau ya nyob twg thaiv, thiab nws thiaj li ua rau carbonization, luv Circuit Court, thiab hluav taws kub.
- Lub capacitor leads raug puas los ntawm kev kub siab ntev, tsis yog los ntawm kev tsis ua haujlwm sab hauv.
Hauv luv luv: Kev sib txuas ntawm cov xaim tsis ua ntej, thiab lub capacitor yog "siav" los ntawm cov cua sov- tsis yog lwm txoj hauv kev.
Misconception 2: "Puas yog cov hlau overcurrent ua rau nws overheat, hlawv, thiab luv luv Circuit Court?"
- Overcurrent tuaj yeem ua rau hlau burnout, tab sis lub hauv paus ua rau yuav tsum paub qhov txawv:
Cov xov hlau tsis zoo los yog kev sib haum xeeb-vim overcurrent tuaj yeem ua rau tsis sib xws overheating thiab burnout, uas kuj yog ib qho teeb meem sab nraud tsis cuam tshuam txog qhov zoo ntawm capacitor.
- Txawm li cas los xij, qhov chaw qhov kub hnyiab - tsom rau ntawm qhov chaw tiv tauj - yog cov yam ntxwv ntawm cov cua sov tsis zoo. Uniform overcurrent ua rau cov hlau aging, thaum kev sib cuag tsis zoo ua rau hauv cheeb tsam overheating thiab melting ntawm kev sib txuas.
- Kev tsis sib haum xeeb tshaj qhov hluav taws kub ntawm lub capacitor feem ntau npau taws rau kev txhais "lub luag haujlwm zoo" vs. "kev teeb tsa / tu lub luag haujlwm." Los ntawm kev txheeb xyuas qhov pib ntawm qhov pib burnout, lub tank mob, thiab hlawv cov cim faib, ob hom kev ua tsis tiav tuaj yeem pom meej meej:
- Ib qho bulging, exploding tuaj yeem nrog sab hauv - tawm burnout qhia tau hais tias tsis ua hauj lwm sab hauv. Carbonized terminals thiab cov xov hlau nrog lub tank tsis zoo qhia txog kev sib txuas sab nraud / qhov system tsis ua haujlwm.

