Txhawm rau tiv thaiv cov teeb meem toast, ntxiv rau hauv av ntawm lubNPAJ POB, kev xaiv ntawm cov to taub tiv thaiv kuj tseem yog qhov tseem ceeb heev. Raws li lub teb chaws tus qauv GB / T 187487.1, lub to tiv thaiv ntawm tus them nqi yuav tsum tau siv hom B lossis ntaus ib qho xau, tab sis kuj tiv thaiv kev tiv thaiv DC. Qhov sib txawv loj tshaj plaws ntawm hom B thiab ntaus a yog tias hom B tau ntxiv kev tiv thaiv DC Takeage. Txawm li cas los xij, vim muaj kev nyuaj thiab cov khoom siv tus nqi ntawm cov hom kev raug mob ntawm DC. Nws tuaj yeem hais tias tam sim no tiv thaiv kev tiv thaiv ntawm kev them nyiaj piles tau zais kev phom sij ntawm qib theem.
Hom dej tsis muaj zog Circuit Court
Lub hom kab mob pas nrig sib tsoo thiab cov qauv siv kab mob Circuit Court yog ntsuas los ntawm cov khoom siv hloov ua haujlwm tam sim no ( Nws ua kom muaj qhov tseeb nyob rau hauv cov xwm txheej hauv qab no:
(a) tib yam li ac ntaus.
(b) residual pulsating DC tam sim no.
(c) DC du tam sim no ntawm 0.006A yog superimposed ntawm cov chaw seem ntawm DC tam sim no.
Hom b leakage breaker - (Tuam Tshoj tuaj yeem ua RCD hom B)
Hom B Tshuacuit Court sib tsoo tuaj yeem ntseeg tau tiv thaiv Sinusoidal AC teeb liab, kos cov cim dC, thiab muaj cov kev tsim qauv du dua li hom kab mob sib xyaws. Nws ua kom muaj qhov tseeb nyob rau hauv cov xwm txheej hauv qab no:
a) tib yam li ntaus A.
b) residual sinusoidal hloov tam sim no mus rau 1000 hz.
c) Cov seem tam sim no yog superimposed nrog du DC tam sim no ntawm 0.4 lub sij hawm cov rated residual tam sim no
d) Cov seem ntawm cov DC tam sim no yog superimposed nrog superimposed nrog superimposed nrog rau 0.4 lub sij hawm rated residual tam sim no los yog ib qho du dc tam sim no ntawm 10mA (saib txhua qhov twg ntau dua).
e) residual DC curents tsim los ntawm cov recification recification hluav taws xob:
- Ob txoj kab yoj ib nrab ntawm ib nrab choj sib txuas kab rau kab rau 2-, 3- thiab 4-ncej Lub Ntiaj Teb
- Rau 3-ncej thiab 4-Ncej Lub Ntiaj Teb Circuit Court
Lub sij hawm Post: Jun-19-2023