Lub tshuab hluav taws xob feem ntau muaj cov kab sib tiv tauj, ib qho arc - tua hluav taws xob, lub tshuab ua haujlwm, chav mus ncig, thiab lub casing.
Thaum lub sij hawm luv luv Circuit Court, cov hlau nplaum tsim los ntawm qhov loj tam sim no (feem ntau 10 mus rau 12 npaug ntawm qhov ntsuas tam sim no) kov yeej lub caij nplooj ntoos hlav tiv thaiv, ua rau lub chaw mus ncig ua haujlwm kom qhib lub tshuab ua haujlwm, thiab cov kev hloov pauv sai sai. Thaum lub sij hawm overload, qhov tam sim no nce, lub tshav kub tsim intensifies, thiab lub bimetallic strip deforms mus rau ib tug tej yam, thawb lub mechanism ua hauj lwm (qhov loj dua tam sim no, lub sij hawm ua hauj lwm luv dua).
Cov hluav taws xob hluav taws xob hluav taws xob siv hluav taws xob tam sim no los sau qhov loj tam sim no ntawm txhua theem thiab sib piv nrog cov nqi teeb tsa. Thaum qhov tam sim no txawv txav, lub microprocessor xa cov teeb liab, ua rau lub tshuab hluav taws xob mus ncig ua haujlwm kom qhib lub tshuab ua haujlwm.
Lub luag haujlwm ntawm lub tshuab hluav taws xob yog txhawm rau tshem tawm thiab txuas cov khoom siv thauj khoom, nrog rau kev cuam tshuam cov kab hluav taws xob tsis zoo, tiv thaiv kev sib tsoo ntawm kev sib tsoo thiab ua kom muaj kev nyab xeeb. High-voltage circuit breakers yuav tsum cuam tshuam 1500V arcs nrog rau tam sim no ntawm 1500-2000A, uas tuaj yeem ncav cuag 2 meters thiab txuas ntxiv hlawv. Yog li ntawd, arc extinguishing yog ib qho teeb meem tseem ceeb uas high-voltage circuit breakers yuav tsum daws.
Lub hauv paus ntsiab lus ntawm arc extinguishing yog tsuas yog kom txias lub arc kom txo thermal ionization, thiab ntawm qhov tod tes, kom lengthen lub arc los ntawm tshuab nws los txhim khu lub recombination thiab diffusion ntawm nqi hais, thaum ib txhij dispersing cov nqi hais nyob rau hauv lub arc qhov sib txawv, sai restore lub rwb thaiv tsev lub zog ntawm nruab nrab.
Tsawg-voltage circuit breakers, tseem hu ua lub tshuab hluav taws xob tsis siv neeg, tuaj yeem siv los txuas thiab tshem tawm cov khoom siv hluav taws xob, thiab tseem tuaj yeem siv los tswj cov motors uas tsis pib nquag. Lawv txoj haujlwm yog sib npaug rau qee qhov lossis tag nrho cov haujlwm ntawm riam hloov, overcurrent relay, undervoltage relay, thermal relay, thiab residual tam sim no ntaus ntawv (RCD), ua rau lawv yog ib qho tseem ceeb tiv thaiv hluav taws xob khoom nyob rau hauv qis -voltage tis networks.
Tsawg-voltage circuit breakers muaj ntau yam kev tiv thaiv (overload, luv luv Circuit Court, undervoltage tiv thaiv, thiab lwm yam), adjustable kev khiav hauj lwm qhov tseem ceeb, siab breaking peev xwm, yooj yim ua hauj lwm, thiab kev nyab xeeb, yog li ntawd lawv tau dav siv. Lub hauv paus ntsiab lus thiab kev ua haujlwm: Tsawg-voltage circuit breakers muaj cov txheej txheem kev khiav hauj lwm, kev sib tiv tauj, cov cuab yeej tiv thaiv (ntau yam mus txawv tebchaws), thiab lub tshuab tua hluav taws xob.
Cov kev sib cuag tseem ceeb ntawm qhov qis -voltage circuit breaker raug kaw manually lossis hluav taws xob. Tom qab cov neeg tseem ceeb raug kaw, qhov pub dawb -tripping mechanism xauv cov neeg tseem ceeb hauv txoj haujlwm kaw. Lub overcurrent mus txawv tebchaws chav tsev lub kauj thiab lub thermal caij ntawm lub thermal mus txawv tebchaws chav tsev yog kev cob cog rua nyob rau hauv series nrog lub ntsiab Circuit Court, thaum lub undervoltage mus txawv tebchaws chav tsev coil yog kev cob cog rua nyob rau hauv parallel nrog lub hwj chim mov. Thaum muaj kev cuam tshuam luv luv lossis overload tshwm sim, lub armature ntawm lub overcurrent mus txawv tebchaws unit koom, ua rau lub free-trip mechanism qhib thiab lub ntsiab tiv tauj mus rau disconnect lub ntsiab Circuit Court. Thaum lub Circuit Court yog overloaded, lub thermal caij ntawm thermal mus txawv tebchaws chav tsev heats li, ua rau lub bimetallic sawb khoov thiab actuate lub free-trip mechanism. Thaum lub Circuit Court yog undervoltageed, lub armature ntawm undervoltage mus txawv tebchaws unit tso tawm, kuj actuating lub free -trip mechanism. Lub shunt mus txawv tebchaws unit yog siv rau cov chaw taws teeb tswj. Thaum lub sijhawm ua haujlwm ib txwm, nws lub kauj yog de{12}}energized; thaum yuav tsum tau tswj chaw taws teeb, nias lub pob pib energizes lub kauj.
