Nkag siab thiab siv cov khoom siv hluav taws xob Circuit Court breakers

Tsawg voltage Circuit Court breaker muaj nuj nqi

1. Kev tiv thaiv overload ntev-ntev: Thaum cov kab yog overloaded, lub Circuit Court breaker yuav ncua sij hawm ib lub sij hawm. Yog tias qhov overload tseem tshwm sim tom qab ncua sijhawm, lub Circuit Court breaker yuav tawm mus. Lub sij hawm no feem ntau yog nyob rau hauv vib nas this (feem ntau tus qauv configuration).

2. Kev tiv thaiv luv luv-circuit ncua sij hawm: Thaum lub caij luv luv tshwm sim, lub Circuit Court breaker yuav tawm mus tom qab ncua. Lub sij hawm no feem ntau yog nyob rau hauv milliseconds (feem ntau tus qauv configuration).

3. Instantaneous short-circuit tiv thaiv: Thaum ib tug luv luv-circuit tam sim no tshwm sim, lub Circuit Court breaker mus tam sim ntawd los tiv thaiv kab. Feem ntau, xws li luv luv-circuit tam sim no feem ntau loj heev thiab muaj kev puas tsuaj ntau dua (feem ntau yog tus qauv teeb tsa).

4. Kev tiv thaiv tiv thaiv: Thaum qhov tam sim no tsis dhau los ntawm tus neeg xyuas pib thiab txuas ncaj qha mus rau lub ntiaj teb sab nraud, nws yog ib qho kev tiv thaiv ntawm lub Circuit Court breaker. Lub hom phiaj yog los tiv thaiv hluav taws xob poob siab. Nws yog ib qho kev tiv thaiv ntxiv ntawm lub Circuit Court breaker. Lub Circuit Court breaker nrog lub luag haujlwm no hu ua kev tiv thaiv to. Circuit Breaker (feem ntau yog xaiv tau).

5. Undervoltage (overvoltage) kev tiv thaiv muaj nuj nqi: Thaum lub hwj chim mov voltage qis dua los yog siab tshaj ib tug tej yam ntawm cov rated voltage, nws yog ib tug tiv thaiv muaj nuj nqi rau lub Circuit Court breaker mus txawv tebchaws. Qhov no yog ib qho kev ua haujlwm tsis zoo ntawm lub Circuit Court breaker thiab yuav tsum muaj ib qho undervoltage lossis overvoltage Realized los ntawm lub siab coil (feem ntau yog xaiv tau).

Tripping daim ntawv ntawm low voltage Circuit Court breaker

1. Thermal-magnetic trip: Nws yog ib lub sij hawm sib sau ua ke rau thermal trip thiab magnetic trip, saib daim duab 2-3 hauv qab no.

Thermal tripping yog ib hom tripping txoj kev uas siv lub tshav kub generated los ntawm bimetal ntawv yuav deformed los ntawm lub overload tam sim no los ua rau lub tripping mechanism. Vim qhov qeeb deformation ntawm cov ntawv hlau, nws tsuas yog siv rau kev tiv thaiv ntau dhau thiab kev tiv thaiv ntev. Cov micro-so yog tag nrho cov thermal-magnetic mus ncig, thiab qee qhov ntawm cov yas yas yog thermal mus ncig. Txij li thaum lub thermal tso tawm feem ntau ntws los ntawm lub voj tam sim no ncaj qha, thiab nws cov kev khiav hauj lwm tam sim no cuam tshuam zoo heev los ntawm qhov kub thiab txias, nws feem ntau yog siv rau hauv cov hluav taws xob hluav taws xob qis uas tam sim no tsis loj heev thiab kev tiv thaiv overcurrent tsis rhiab heev. .

Sib nqus tripping yog ib txoj kev tripping uas siv cov magnetic teb generated tom qab lub excitation coil yog energized kom nyiam lub armature los ua rau lub tripping mechanism.

Kev mus ncig sib nqus tuaj yeem tawg txoj kab tam sim ntawd, yog li nws yog siv rau kev tiv thaiv luv luv.

Lub Circuit Court breaker ua ke nrog thermal magnetic txoj cai muaj ob qho tib si tiv thaiv overload thiab luv luv tiv thaiv.

Lub Circuit Court breaker nrog tsuas yog sib nqus tso tawm kuj hu ua ib qho kev mus ncig tam sim, thiab lub Circuit Court breaker nrog ob qho tib si kuj hu ua ob qho kev mus ncig. Ntawm qhov me me Circuit Court breakers, nws yog ib qho ntawm cov thermal magnetic tripping.

2. Kev tso tawm hluav taws xob: Nws yuav siv qhov tam sim no me me los ntawm Circuit Court raws li qhov ntsuas tam sim no, thiab nws qhov ntsuas qhov tseeb yog qhov siab, yog li nws feem ntau siv rau hauv Circuit Court tam sim no loj, lossis ib lub voj voog uas yuav tsum tau muaj kev ua haujlwm siab rau kev ua haujlwm tam sim no. Lub tshuab hluav taws xob mus txawv tebchaws yog ib lub voj voog uas muaj cov khoom siv hluav taws xob, uas kuaj xyuas qhov tam sim no ntawm lub ntsiab Circuit Court, amplifies thiab pushes lub tripping mechanism, thiab feem ntau ntawm Circuit Court breakers nrog siab tam sim no theem ntawm ACB thiab MCCB txais yuav daim ntawv ntawm hluav taws xob tripping (saib daim duab sab saud ntawm sab xis).

3. Kev sib piv ntawm ob hom tripping:

Thermal magnetic tso tawm muaj kev ua haujlwm ruaj khov thiab tsis cuam tshuam los ntawm kev hloov pauv ntawm qhov hluav taws xob, lub neej ntev, tsis tshua muaj siab, thiab nyuaj rau kho; hluav taws xob tso tawm muaj kev ua haujlwm zoo tshaj plaws, siab rhiab heev, hloov tau yooj yim, cuam tshuam los ntawm kev siv fais fab, thiab me ntsis kev puas tsuaj yooj yim.

4. Tripping yam ntxwv ntawm Circuit Court breaker:

Lub tripping curves muab faib ua A, B, C, D, K, thiab lwm yam. Cov ntsiab lus ntawm txhua qhov yog raws li nram no:

Curve A: Lub tripping tam sim no yog (2 ~ 3) Nyob rau hauv, uas yog tsim rau kev tiv thaiv semiconductor hluav taws xob circuits, ntsuas kab nrog low-power transformers, los yog systems nrog ntev kab thiab luv luv-circuit tam sim no;

Curve B: Lub tripping tam sim no yog (3 ~ 5) Nyob rau hauv, uas yog haum rau tsev neeg lub hwj chim faib system, tiv thaiv cov khoom siv hauv tsev thiab kev tiv thaiv tus kheej;

C nkhaus: lub tripping tam sim no yog (5 ~ 10) Nyob rau hauv, uas yog tsim rau kev tiv thaiv hluav taws xob faib kab, teeb pom kev zoo kab thiab lub cev muaj zog circuits nrog high switching tam sim no;

D nkhaus: Lub tripping tam sim no yog (10 ~ 20) Nyob rau hauv, uas yog tsim rau kev tiv thaiv cov cuab yeej nrog siab inrush tam sim no, xws li transformer solenoid li qub, thiab lwm yam .;

Hauv hais txog qhov ntsuas tam sim no