Rated tam sim no ntawm Residual Current Circuit Breaker
Tso lus
Kev xaiv raug thiab tsim nyog ntawm qhov ntsuas kev ua haujlwm tam sim no ntawm cov khoom siv tam sim no (RCD) yog qhov tseem ceeb. Ua ntej, RCD yuav tsum xaiv ua haujlwm thaum muaj hluav taws xob tshwm sim lossis qhov xau tam sim no tshaj qhov tso cai. Qhov thib ob, RCD yuav tsum tsis txhob ua haujlwm nyob rau hauv ib txwm to tam sim no los tiv thaiv hluav taws xob hluav taws xob thiab kev lag luam tsis tsim nyog.
Qhov ntsuas kev ua haujlwm tam sim no ntawm RCD yuav tsum ua raws li peb yam hauv qab no:
(1) Txhawm rau kom muaj kev nyab xeeb ntawm tus kheej, qhov ntsuas kev ua haujlwm tam sim no yuav tsum tsis pub tshaj qhov muaj txiaj ntsig tam sim no rau tib neeg lub cev; thoob ntiaj teb, 30 mA raug lees paub tias yog tus nqi tam sim no nyab xeeb.
(2) Txhawm rau kom ntseeg tau tias kev ua haujlwm ruaj khov ntawm daim phiaj hluav taws xob, qhov ntsuas kev ua haujlwm tam sim no yuav tsum zam qhov tsis muaj qhov cuam tshuam tam sim no ntawm qhov qis -voltage fais fab.
(3) Txhawm rau kom ntseeg tau tias kev xaiv hauv ntau- qib kev tiv thaiv, qhov ntsuas kev ua haujlwm tam sim no ntawm qib tom ntej yuav tsum tsawg dua li ntawm qib dhau los, thiab yuav tsum muaj qhov sib txawv ntawm 112 txog 215 npaug ntawm qhov ntsuas kev ua haujlwm tam sim no ntawm txhua qib.
Thawj -theem RCD yog ntsia ntawm qhov qis- qhov hluav taws xob sab hluav taws xob ntawm qhov hluav taws xob faib hluav taws xob. Thawj theem ntawm kev tiv thaiv yog rau cov kab ntev nrog cov xau loj loj. Nws cov ntsuas hluav taws xob yuav tsum tsis pub tshaj 100mA thaum tsis muaj kev tiv thaiv ntau- theem. Nrog rau ntau yam -theem tiv thaiv, qhov ntsuas hluav taws xob tam sim no yuav tsum yog 75mA hauv tsis yog- lub caij ntuj nag thiab 200mA nyob rau lub caij los nag rau cov kab sib txuas nrog cov xaim me me; rau cov phiajcim uas muaj cov dej xau loj dua, cov ntsuas hluav taws xob tam sim no yuav tsum yog 100mA nyob rau hauv tsis yog{12}}lub caij ntuj nag thiab 300mA hauv lub caij los nag.
Qhov thib ob theem ntawm kev tiv thaiv tam sim no yog ntsia ntawm ceg kab hluav taws xob. Cov kab tiv thaiv yog luv luv, nrog kev siv hluav taws xob tsawg thiab cov xau me me tam sim no. Qhov ntsuas hluav taws xob tam sim no ntawm cov khoom siv tiv thaiv tam sim no yuav tsum nyob nruab nrab ntawm cov ntsuas ntws tawm ntawm cov khoom siv tiv thaiv sab saud thiab qis qis, feem ntau ntawm 30 thiab 75mA.
Qib thib peb ntawm cov khoom siv tiv thaiv tam sim no yog siv los tiv thaiv ib leeg lossis ntau yam khoom siv hluav taws xob thiab yog cov khoom siv tiv thaiv ncaj qha los tiv thaiv hluav taws xob poob siab. Kev siv hluav taws xob ntawm cov kab tiv thaiv thiab cov cuab yeej siv me me, thiab cov xau tam sim no me me, feem ntau tsis tshaj 10mA. Cov cuab yeej tiv thaiv tam sim no nrog cov ntsuas kev ua haujlwm ntawm 30mA thiab lub sijhawm ua haujlwm tsawg dua 0.1s yuav tsum raug xaiv.
