Lub arc extinguishing txoj kev ntawm Circuit Court breakers feem ntau muaj xws li nram qab no plaub hom, cov uas ua hauj lwm hauv paus ntsiab lus ntawm magnetic blowout arc extinguishing yog raws li nram no:
I. Hom Arc Extinguishing Methods
1. Mechanical Arc Extinguishing:Lub arc yog nrawm nrawm los ntawm cov cuab yeej txwv (xws li lub caij nplooj ntoos hlav hu), thiab tom qab ntawd txias thiab tua siv lub arc tus kheej lub zog. Qhov no feem ntau yog siv hauv kev hloov khoom siv.
2. Sib nqus Blowout Arc Extinguishing:Lub tshuab magnetic blowout coil txuas nrog hauv cov kab sib txuas ua rau muaj qhov sib nqus. Lub electromagnetic quab yuam lengthens lub arc thiab tshuab nws mus rau hauv ib tug khoom nruab nrab (xws li ib tug hlau ntawv) nyob rau hauv lub arc extinguishing chamber, qhov twg lub arc yog sai extinguished los ntawm txias thiab qhov kev txiav txim ntawm nruab nrab.
3. Nqaim-slit (longitudinal-slit) arc extinguishing:Nyob rau hauv lub zog ntawm ib tug magnetic teb, hluav taws xob arc muab faib ua ntau ntu, uas nkag mus rau hauv lub nqaim slits ntawm lub arc extinguishing chamber. Qhov nqaim slits tso cai rau lub arc kom tag nrho cov khoom nruab nrab, ua kom txias thiab tua. Txoj kev no feem ntau pom nyob rau hauv AC contactors.
4. Gas/liquid arc extinguishing:
- Roj Circuit Court breaker:Siv cov pa roj thiab siab tsim los ntawm cov roj decomposition kom txias lub arc, thiab elongates lub arc los ntawm tshuab nws tom qab los yog longitudinally los ntawm nozzles.
- SF₆ Circuit Court breaker:Tsim kom muaj - siab airflow los ntawm compressing roj los ntawm lub compressor chamber los yog tus kheej -energizing qauv, ua ke nrog cov insulating zog ntawm SF₆ roj, kom ceev ceev tua lub arc.
Txoj Cai Ua Haujlwm ntawm Magnetic Blowout Arc Extinguishing
1. Magnetic Field Generation:Thaum lub Circuit Court breaker mus, cov koob - txuas magnetic blowout coils yog energized, tsim ib magnetic teb. Qhov no magnetic teb ua rau lub arc, ua rau cov nqi hais nyob rau hauv arc kom ceev nyob rau hauv lub zog ntawm electromagnetic quab yuam.
2. Arc Elongation thiab txias:Lub zog electromagnetic generated los ntawm magnetic teb elongates lub arc, cia nws nkag mus rau hauv cov khoom nruab nrab (xws li ib daim hlau los yog slit) nyob rau hauv lub arc extinguishing chamber. Lub arc sib tsoo nrog cov roj molecules nyob rau hauv nruab nrab, sai txias thiab txo nws cov kub, nws thiaj li extinguishing lub arc.
3. Cov qauv zoo:Sib nqus blowout arc extinguishing yuav tsum tsis muaj zog ntxiv, cia siab rau ntawm lub magnetic teb thiab kev sib cuag qauv. Nws yog tsim rau nruab nrab thiab qis voltage Circuit Court breakers thiab zoo txo kev sib cuag yaig.
12kV nqus tsev vacuum interrupter rau lub tshuab nqus tsev vacuumbreaker yog ib qho tseem ceeb ntawm cov hluav taws xob hluav taws xob hloov hluav taws xob hauv 12kV systems. Nws lub luag haujlwm tseem ceeb yog siv cov khoom siv hluav taws xob zoo heev ntawm lub tshuab nqus tsev hauv lub raj kom sai tua cov arc thiab suppress tam sim no thaum nruab nrab rau high voltage Circuit Court cuam tshuam. Cov txheej txheem no pab tiv thaiv kev raug xwm txheej thiab kev npaj txhij txog. Lub tshuab nqus tsev cuam tshuam feem ntau yog siv rau hauv lub zog xa hluav taws xob thiab kev tswj hwm kev faib tawm.
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