Circuit Breaker

Lub Circuit Court breaker yog hais txog lub tshuab hloov hluav taws xob uas tuaj yeem kaw, nqa thiab tawg tam sim no raws li cov xwm txheej hauv ib puag ncig thiab tuaj yeem kaw, nqa thiab tawg tam sim no nyob rau hauv cov xwm txheej txawv txav hauv lub sijhawm.Circuit Court breakers tau muab faib ua high-voltage circuit breakers thiab low-voltage circuit breakers raws li lawv qhov kev siv.

Circuit Court breakers tuaj yeem siv los faib hluav taws xob hluav taws xob, pib lub cev muaj zog asynchronous tsis tu ncua, thiab tiv thaiv cov kab hluav taws xob thiab cov motors.Thaum lawv muaj qhov hnyav dhau los lossis luv-circuit thiab under-voltage faults, lawv tuaj yeem txiav tawm Circuit Court.Nws txoj haujlwm yog sib npaug rau lub fuse hloov.Ua ke nrog overheating thiab underheating relay, thiab lwm yam. Ntxiv mus, nws yog feem ntau tsis tsim nyog los hloov cov khoom tom qab tawg qhov txhaum tam sim no.Nws tau siv dav.

Kev faib hluav taws xob yog qhov txuas tseem ceeb heev hauv kev tsim, kev sib kis thiab kev siv hluav taws xob.Lub zog faib hluav taws xob muaj xws li transformers thiab ntau yam khoom siv hluav taws xob siab thiab tsis tshua muaj hluav taws xob, thiab qhov hluav taws xob tsis tshua muaj hluav taws xob yog cov khoom siv hluav taws xob siv dav.

Txoj haujlwm ua haujlwm:

Lub tshuab hluav taws xob feem ntau yog tsim los ntawm kev sib txuas lus, lub tshuab hluav taws xob tua hluav taws xob, lub tshuab ua haujlwm, kev tso tawm, thiab lub casing.

Thaum ib qho luv luv Circuit Court tshwm sim, lub magnetic teb generated los ntawm cov loj tam sim no (feem ntau 10 mus rau 12 lub sij hawm) overcomes cov tshuaj tiv thaiv quab yuam caij nplooj ntoos hlav, lub tso tawm rub lub khiav hauj lwm mechanism los ua, thiab hloov mus rau instantaneously.Thaum overloaded, tam sim no loj dua, lub tshav kub tiam nce, thiab cov bimetallic daim ntawv deforms mus rau ib tug tej yam kev pab cuam los txhawb kev txiav txim ntawm lub mechanism (qhov loj dua tam sim no, lub sij hawm luv luv).

Muaj ib hom hluav taws xob, uas siv lub transformer los sau cov tam sim no ntawm txhua theem thiab muab piv nrog cov nqi teev.Thaum qhov tam sim no txawv txav, microprocessor xa cov teeb liab los ua kom cov hluav taws xob tso tawm tsav lub tshuab ua haujlwm ua haujlwm.

Lub luag haujlwm ntawm Circuit Court breaker yog txiav tawm thiab txuas lub load Circuit Court, nrog rau kev txiav tawm qhov txhaum Circuit Court, tiv thaiv kev sib tsoo ntawm kev nthuav dav, thiab ua kom muaj kev nyab xeeb.Lub high-voltage Circuit Court breaker yuav tsum tawg 1500V arcs nrog rau tam sim no ntawm 1500-2000A.Cov arcs tuaj yeem ncav cuag 2m thiab txuas ntxiv hlawv yam tsis tau tua.Yog li ntawd, arc extinguishing yog ib qho teeb meem uas high-voltage circuit breakers yuav tsum daws.

Lub hauv paus ntsiab lus ntawm arc tshuab thiab arc extinguishing yog tsuas yog kom txias lub arc kom txo thermal dissociation.Ntawm qhov tod tes, kom ntev lub arc los ntawm tshuab lub arc kom ntxiv dag zog rau cov recombination thiab diffusion ntawm nqi hais, thiab nyob rau tib lub sij hawm, lub charged hais nyob rau hauv lub arc qhov sib txawv yog tshuab mus, thiab lub zog dielectric ntawm nruab nrab yog sai sai. .

Tsawg-voltage Circuit Court breakers, tseem hu ua lub tshuab hluav taws xob tsis siv neeg, tuaj yeem siv los hloov rau thiab tawm cov khoom siv hluav taws xob, thiab tseem tuaj yeem siv los tswj cov motors uas pib tsis tshua muaj.Nws txoj haujlwm yog sib npaug ntawm qee qhov lossis tag nrho cov haujlwm ntawm cov khoom siv hluav taws xob xws li riam hloov, overcurrent relay, voltage poob relay, thermal relay thiab leakage protector.Nws yog ib qho tseem ceeb tiv thaiv cov khoom siv hluav taws xob hauv cov khoom siv hluav taws xob tsawg.

Tsawg-voltage Circuit Court breakers muaj qhov zoo ntawm ntau yam kev tiv thaiv kev ua haujlwm (overload, luv-circuit, under-voltage tiv thaiv, thiab lwm yam), adjustable tus nqi, siab tawg peev xwm, yooj yim khiav lag luam, thiab kev nyab xeeb, yog li ntawd lawv tau dav siv.Lub hauv paus ntsiab lus thiab kev ua haujlwm Lub tshuab hluav taws xob qis hluav taws xob yog tsim los ntawm kev ua haujlwm, kev sib cuag, cov khoom siv tiv thaiv (ntau qhov kev tso tawm), thiab arc extinguishing system.

Cov kev sib cuag tseem ceeb ntawm cov hluav taws xob hluav taws xob qis hluav taws xob yog ua haujlwm los yog hluav taws xob kaw.Tom qab qhov kev sib cuag tseem ceeb raug kaw, qhov kev mus ncig dawb mechanism kaw qhov kev sib cuag tseem ceeb hauv txoj haujlwm kaw.Lub coil ntawm lub overcurrent tso tawm thiab lub thermal caij ntawm lub thermal tso tawm yog txuas nrog nyob rau hauv series nrog lub ntsiab Circuit Court, thiab lub coil ntawm undervoltage tso tawm yog txuas nyob rau hauv parallel nrog lub hwj chim mov.Thaum lub Circuit Court luv luv los yog overloaded hnyav, lub armature ntawm overcurrent tso tawm yog rub los ua lub free mus txawv tebchaws mechanism, thiab lub ntsiab tiv tauj disconnects lub ntsiab Circuit Court.Thaum lub Circuit Court yog overloaded, lub thermal caij ntawm lub thermal tso tawm yuav kub thiab khoov lub bimetal, thawb lub free tso mechanism ua.Thaum lub Circuit Court yog undervoltage, lub armature ntawm undervoltage tso tawm.Kuj actuate lub free mus txawv tebchaws mechanism.Lub shunt tso tawm yog siv rau cov chaw taws teeb tswj.Thaum lub sijhawm ua haujlwm ib txwm, nws lub kauj yog powered.Thaum yuav tsum tau tswj kev deb, nias lub pob pib kom lub zog ntawm lub kauj.

Cov yam ntxwv tseem ceeb:

Cov yam ntxwv ntawm Circuit Court breaker feem ntau suav nrog: ntsuas voltage Ue;ntsuas tam sim no hauv;Kev tiv thaiv overload (Ir lossis Irth) thiab luv-circuit tiv thaiv (Im) tripping tam sim no qhov chaw ntau yam;rated luv-circuit breaking tam sim no (industrial circuit breaker Icu; tsev neeg Circuit Court breaker Icn) Tos.

Rated Operating Voltage (Ue): Qhov no yog qhov hluav taws xob uas lub Circuit Court breaker ua haujlwm nyob rau hauv ib txwm muaj (tsis cuam tshuam).

Rated tam sim no (Nyob rau hauv): Qhov no yog qhov siab tshaj plaws tam sim no tus nqi uas lub Circuit Court breaker nruab nrog ib tug tshwj xeeb overcurrent mus ncig teb chaws relay tuaj yeem tiv taus infinitely ntawm qhov kub thiab txias uas tau teev tseg los ntawm cov chaw tsim khoom, thiab yuav tsis pub tshaj qhov ntsuas kub tau teev tseg los ntawm cov kabmob tam sim no.

Short-circuit relay mus txawv tebchaws tam sim no tus nqi (Im): Lub luv luv-circuit mus ncig teb chaws relay (instantaneous los yog luv-delay) yog siv los sai sai mus rau lub Circuit Court breaker thaum muaj ib tug siab txhaum tam sim no tus nqi tshwm sim, thiab nws mus txawv tebchaws txwv yog Im.

Rated luv luv-circuit breaking peev (Icu los yog Icn): Qhov ntsuas luv luv-circuit breaking tam sim no ntawm lub Circuit Court breaker yog qhov siab tshaj (kwv yees) tam sim no tus nqi uas lub Circuit Court breaker tuaj yeem tawg yam tsis muaj kev puas tsuaj.Cov txiaj ntsig tam sim no tau muab rau hauv tus qauv yog tus nqi rms ntawm AC tivthaiv ntawm qhov txhaum tam sim no, thiab DC ntu ntu ntu (uas ib txwm tshwm sim hauv qhov phem tshaj plaws luv luv Circuit Court) yog suav tias yog xoom thaum xam tus nqi tus qauv. .Muaj kev ntsuas hluav taws xob hluav taws xob (Icu) thiab kev ntsuas hluav taws xob hauv tsev (Icn) feem ntau yog muab rau hauv kA rms.

Luv-circuit breaking peev (Ics): Lub peev xwm tawg ntawm lub Circuit Court breaker tau muab faib ua ob hom: ntsuas qhov kawg luv luv-circuit breaking peev thiab ntsuas kev ua haujlwm luv-circuit tawg peev xwm.