Dab tsi yog qhov kev faib tawm ntawm cov dej xau tiv thaiv?

Cov khoom tiv thaiv tuaj yeem raug cais raws li lawv cov kev tiv thaiv kev ua haujlwm, cov yam ntxwv ntawm cov qauv, kev teeb tsa, kev ua haujlwm, tus lej ntawm cov ncej thiab cov kab, kev ua haujlwm rhiab heev, thiab lwm yam. Ntawm no peb tsuas yog piav qhia raws li lawv cov haujlwm tiv thaiv thiab siv. Lawv feem ntau tuaj yeem muab faib ua cov xaim tiv thaiv relays, xau tiv thaiv relays, thiab tiv thaiv xau relays. Muaj peb hom kev tiv thaiv kev hloov pauv thiab cov qhov ntsaws ruaj ruaj.
1. Kev tiv thaiv cov dej xau yog hais txog cov khoom siv tiv thaiv cov dej xau uas muaj lub luag haujlwm ntawm kev kuaj xyuas thiab txiav txim siab tam sim no, tab sis tsis muaj lub luag haujlwm ntawm kev txiav tawm thiab txuas lub ntsiab Circuit Court. Lub xau tiv thaiv relay muaj xoom-sequence transformer, ib qho chaw mus ncig thiab ib qho kev sib cuag rau cov teeb liab tawm. Nws tuaj yeem siv ua ke nrog cov hloov pauv loj tam sim no tsis siv neeg raws li kev tiv thaiv tag nrho ntawm cov hluav taws xob qis hluav taws xob lossis raws li cov xau, hauv av lossis kev tiv thaiv kev tiv thaiv thiab kev tiv thaiv ntawm lub ntsiab circuits.
Thaum muaj cov xau tam sim no nyob rau hauv lub ntsiab Circuit Court, txij li thaum lub auxiliary contact thiab kev sib cais tso tawm ntawm lub ntsiab Circuit Court hloov yog txuas nrog nyob rau hauv series los tsim ib tug Circuit Court, lub auxiliary tiv tauj tig rau kev sib cais tawm thiab disconnects cua hloov, AC contactor, thiab lwm yam. ., ua rau nws mus txawv tebchaws thiab txiav tawm lub ntsiab Circuit Court. lub voj. Kev sib tiv tauj kuj tseem tuaj yeem txuas nrog lub suab thiab lub teeb pom kev zoo kom xa tawm lub tswb ceeb toom kom muaj kev cuam tshuam txog kev rwb thaiv tsev ntawm kab.
2. Lub qhov hluav taws xob tiv thaiv hluav taws xob tsis yog tsuas yog tuaj yeem txuas lossis tshem tawm lub hauv paus tseem ceeb xws li lwm cov hluav taws xob hluav taws xob, tab sis kuj muaj kev ua haujlwm ntawm kev kuaj xyuas thiab txiav txim siab tam sim no. Thaum muaj kev puas tsuaj los yog rwb thaiv tsev nyob rau hauv lub ntsiab Circuit Court, lub leakage tiv thaiv hloov tau ib tug switching caij uas tig lub ntsiab Circuit Court rau los yog tawm raws li qhov kev txiav txim. Nws koom tes nrog fuses thiab thermal relays los tsim ib qho kev ua haujlwm tsis tshua muaj hluav taws xob hloov hluav taws xob.
Tam sim no, daim ntawv no ntawm cov cuab yeej tiv thaiv dej yog siv dav tshaj plaws. Cov hluav taws xob tiv thaiv hluav taws xob nyob rau hauv kev ua lag luam feem ntau siv hauv cov khoom hauv qab no raws li lawv txoj haujlwm:
(1) Nws tsuas yog muaj kev ua haujlwm ntawm kev tiv thaiv thiab hluav taws xob tawm. Nws yuav tsum tau siv ua ke nrog fuses, thermal relays, overcurrent relays thiab lwm yam kev tiv thaiv.
(2) Nws kuj muaj kev tiv thaiv overload muaj nuj nqi.
(3) Nws kuj muaj overload thiab luv-circuit tiv thaiv ua haujlwm.
(4) Nws kuj muaj kev tiv thaiv luv luv.
(5) Nws kuj muaj cov haujlwm ntawm luv luv Circuit Court, overload, to, overvoltage thiab undervoltage.
3. Lub qhov hluav taws xob tiv thaiv yog hais txog lub qhov hluav taws xob hluav taws xob uas tuaj yeem ntes thiab txiav txim qhov hluav taws xob tam sim no thiab txiav tawm hauv Circuit Court. Nws qhov ntsuas tam sim no feem ntau qis dua 20A, nws cov dej ntws ua haujlwm tam sim no yog 6-30mA, thiab nws qhov rhiab heev. Nws feem ntau yog siv los tiv thaiv cov cuab yeej siv hluav taws xob thiab cov khoom siv hluav taws xob txawb thiab hauv cov chaw pej xeem xws li tsev thiab tsev kawm ntawv.