1) Kev sib koom tes ntawm cov hluav taws xob hluav taws xob yuav tsum xav txog cov nqi tam sim ntawd ntawm qhov hluav taws xob hluav taws xob hluav taws xob, uas yuav tsum ntau dua qhov siab tshaj qhov xav tau luv luv -kho tam sim no ntawm downstream circuit breaker lub davhlau ya nyob twg. Yog hais tias qhov sib txawv ntawm impedance qhov tseem ceeb ntawm Circuit Court Cheebtsam ntawm ob lub Circuit Court breakers thaum lub sij hawm luv luv Circuit Court yog me me, ua rau ib tug negligible sib txawv nyob rau hauv luv luv -circuit tam sim no tus nqi, ces lub upstream Circuit Court breaker yuav raug xaiv nrog ib tug luv luv - ncua mus txawv tebchaws unit.
2) Tam sim no - txwv Circuit Court breakers yuav mus nyob rau hauv milliseconds thaum lub luv luv - Circuit Court tam sim no ntau dua los yog sib npaug rau lawv instantaneous mus txawv tebchaws unit. Yog li ntawd, cov khoom siv tiv thaiv qis qis yuav tsum tsis txhob siv cov hluav taws xob hluav taws xob kom ua tiav cov kev tiv thaiv xaiv.
3) Circuit Court breakers nrog luv luv - ncua kev mus ncig ua si muaj kev txo qis hauv kev tawg thaum lawv lub sijhawm ncua mus rau qhov siab tshaj plaws. Yog li ntawd, nyob rau hauv cov kev xaiv tiv thaiv circuits, lub luv luv - ncua sij hawm tawg lub peev xwm ntawm cov xaiv Circuit Court breaker yuav tsum tau raws li qhov yuav tsum tau.
4) Nws kuj tseem yuav tsum tau txiav txim siab tias qhov luv luv - Circuit Court ncua sijhawm rov qab yam ntxwv ntawm qhov hluav taws xob hluav taws xob hluav taws xob thiab lub sijhawm ua haujlwm yam ntxwv nkhaus ntawm lub voj voog qis qis yuav tsum tsis txhob cuam tshuam, thiab luv luv - ncua tus yam ntxwv nkhaus yuav tsum tsis txhob cuam tshuam nrog cov yam ntxwv nkhaus tam sim no . 5) Thaum Circuit Court breakers thiab fuses raug siv los ua ke ntawm cov kwj deg thiab kev sib koom ua ke. Lub ampere - tus yam ntxwv nkhaus thib ob ntawm lub Circuit Court breaker thiab lub fuse yuav tsum tau muab piv los xyuas kom meej xaiv kev tiv thaiv thaum muaj luv luv -circuit tam sim no.
6) Thaum Circuit Court breakers siv los tiv thaiv cov kab xa tawm, Circuit Court breakers nrog ntev - ncua sij hawm overcurrent mus txawv tebchaws yuav tsum raug xaiv. Thaum ib qho - theem hauv av txhaum tshwm sim ntawm qhov kawg ntawm kab, luv luv - Circuit Court tam sim no yuav tsum tsis pub tsawg tshaj 1.5 npaug ntawm instantaneous los yog luv luv - ncua overcurrent trip unit teem tam sim no ntawm lub Circuit Court breaker.
