Puas yog molded case Circuit Breaker puas muaj kev tiv thaiv tam sim no?

Txawm hais tias molded case Circuit breaker muaj qhov seem tiv thaiv tam sim no nyob ntawm qhov xwm txheej tshwj xeeb. Ordinary molded case circuit breakers feem ntau ua haujlwm rau kev sib txuas hauv Circuit Court thaum muaj overload lossis luv luv Circuit Court txhaum, thiab tsis muaj qhov seem tiv thaiv tam sim no. Residual tam sim no tiv thaiv (RCD) molded rooj plaub Circuit Court breakers, ntawm qhov tod tes, muaj ib qho ntxiv qhov seem tiv thaiv tam sim no uas tuaj yeem cuam tshuam lub Circuit Court sai sai thaum pom cov xau tam sim no nce mus txog tus nqi, tiv thaiv cov neeg ua haujlwm thiab cov khoom siv.

Raws li txoj cai, RCD molded case Circuit breakers yog raws li Kirchhoff txoj cai tam sim no, siv xoom-ib ntus tam sim no transformer txhawm rau txheeb xyuas cov vector sum ntawm peb -theem tam sim no. Thaum cov xau tam sim no tshaj 30mA (qhov teeb tsa raug rau tsev neeg RCDs), qhov seem tam sim no mus txawv tebchaws yuav qhib, ua rau lub voj voog mus ncig. Ordinary molded case Circuit breakers feem ntau yog nyob ntawm thermal tripping thiab electromagnetic tripping; thermal tripping yog siv los tiv thaiv overload, thiab electromagnetic tripping yog siv los tiv thaiv luv luv Circuit Court.

Qhov seem tiv thaiv tam sim no ua haujlwm ntawm RCD molded rooj plaub Circuit Court breakers los ntawm zoo-cov npe paub hauv kev lag luam tau dhau los ua kev sim nruj. Piv txwv li, Schneider Electric's NSX series muaj qhov xau tam sim no mus txawv tebchaws tsis pub dhau 0.1 vib nas this thaum cov xau tam sim no yog 1 npaug ntawm cov ntsuas hluav taws xob tam sim no, ua kom muaj kev nyab xeeb hluav taws xob zoo. Nyob rau hauv cov ntaub ntawv siv tau, rau cov khoom siv hauv tsev, nws raug nquahu kom siv cov ntaub ntawv molded Circuit Court breakers nrog kev tiv thaiv tam sim no los tiv thaiv hluav taws xob raug mob los ntawm kev xau. Txawm li cas los xij, hauv qee qhov kev lag luam hluav taws xob hluav taws xob, yog tias qhov kev txhawj xeeb tseem ceeb yog overload thiab luv luv - tiv thaiv Circuit Court, zoo tib yam molded case circuit breakers txaus. Cov kev tiv thaiv kev tiv thaiv rau molded rooj plaub Circuit Court breakers nrog kev tiv thaiv tam sim no muaj qhov sib txawv. High-paub meej tiv thaiv cov qauv tuaj yeem kuaj xyuas cov dej ntws tawm tsawg dua; Piv txwv li, molded case circuit breakers siv nyob rau hauv qee qhov chaw kho mob yuav tsum tau kuaj xyuas cov dej xau ntawm 10mA lossis txawm me dua. Thaum txhim kho molded rooj plaub Circuit Court breakers nrog kev tiv thaiv tam sim no, yuav tsum tau them nyiaj rau lawv qhov chaw ua haujlwm. Cov av noo, qhov kub thiab txias, thiab lwm yam tuaj yeem cuam tshuam rau kev ruaj ntseg ntawm kev tiv thaiv kev ua haujlwm. Feem ntau, cov dej xau tiv thaiv tam sim no ua haujlwm ib txwm ua thaum cov av noo nyob nruab nrab ntawm 40% thiab 70% thiab qhov kub ntawm 5℃thiab 40 degree.

Rau cov chaw uas muaj kev xav tau siab rau kev siv hluav taws xob txuas ntxiv, kev xaiv ntawm kev tiv thaiv tam sim no yuav tsum tau txiav txim siab thaum xaiv cov ntaub ntawv molded Circuit Court breakers nrog kev tiv thaiv tam sim no. Cov dej ntws sib txawv thiab lub sij hawm tripping tuaj yeem tsim kom ua tiav qib kev tiv thaiv, tiv thaiv ib qho kev xau los ntawm kev ua rau lub cev - hluav taws xob thoob plaws. Los ntawm kev xav txog tus nqi, molded case circuit breakers nrog kev tiv thaiv tam sim no feem ntau yog 20% ​​-50% kim dua li cov pwm pwm Circuit Court breakers. Qhov no yog vim hais tias ntawm qhov ntxiv leakage tam sim no tiv thaiv module thiab muaj feem xyuam rau kev kuaj xyuas circuits.

Nyob rau hauv cov nqe lus ntawm kev saib xyuas, molded rooj plaub Circuit Court breakers nrog to tam sim no tiv thaiv yuav tsum tau mus tsis tu ncua kev kuaj tam sim no. Feem ntau, lub khawm ntsuas tam sim no yuav tsum tau nias ib hlis ib zaug los xyuas seb qhov kev tiv thaiv tam sim no puas yog qhov qub. Yog hais tias lub Circuit Court breaker tsis tawm mus thaum lub sij hawm xeem, qhov hluav taws xob tiv thaiv module tej zaum yuav faulty thiab yuav tsum tau kho los yog hloov tam sim ntawd. Qee qhov molded case Circuit breakers nrog kev tiv thaiv tam sim no tseem muaj lub tswb nrov tam sim no. Thaum cov xau tam sim no nce mus txog tus nqi ceeb toom tab sis tsis ncav cuag tus nqi tripping, lub suab nrov thiab pom lub tswb ceeb toom yuav raug tshaj tawm los ceeb toom cov neeg ua haujlwm kom tshawb xyuas qhov muaj feem cuam tshuam txog kev phom sij.

Thaum xaiv lub molded case Circuit Court breaker nrog kev tiv thaiv to, lub to yuav tsum tau txiav txim raws li lub load hom. Rau cov teeb pom kev zoo, qhov hluav taws xob ua haujlwm ntawm 30mA tuaj yeem xaiv tau; rau lub cev muaj zog loads, xav txog qhov tsis sib npaug tam sim no thaum lub sijhawm pib lub cev muaj zog, cov dej ntws ua haujlwm tam sim no tuaj yeem tsim nyog nce mus rau 100mA-300mA.