Txhawm rau tiv thaiv cov teeb meem xau, ntxiv rau hauv av ntawm lubpab pawg, kev xaiv ntawm cov khoom tiv thaiv los kuj tseem ceeb heev.Raws li lub teb chaws tus qauv GB / T 187487.1, lub leakage protector ntawm lub charger pawg yuav tsum siv hom B los yog hom A, uas tsis tsuas yog tiv thaiv AC to, tab sis kuj tiv thaiv pulsating DC.Qhov sib txawv loj tshaj plaws ntawm Hom B thiab Hom A yog tias Hom B tau ntxiv kev tiv thaiv DC to.Txawm li cas los xij, vim qhov nyuaj thiab tus nqi txwv ntawm hom B nrhiav kom pom, feem ntau cov tuam txhab tam sim no xaiv hom A. Qhov kev puas tsuaj loj tshaj plaws ntawm DC leakage tsis yog kev raug mob ntawm tus kheej, tab sis qhov kev puas tsuaj zais los ntawm qhov tsis ua haujlwm ntawm cov khoom siv tiv thaiv thawj.Nws tuaj yeem hais tau tias qhov kev tiv thaiv tam sim no ntawm cov khoom siv hluav taws xob tau muab zais qhov phom sij ntawm tus qauv.
Hom A to Circuit Court breaker
A-hom to Circuit Court breaker thiab AC-hom to Circuit Court breaker yog qhov tseem ceeb ntawm kev ua haujlwm (tus nqi xau yog ntsuas los ntawm xoom-sequence tam sim no transformer), tab sis cov yam ntxwv sib nqus ntawm lub transformer tau txhim kho.Nws ua kom tripping nyob rau hauv cov xwm txheej hauv qab no:
(a) Ib yam li AC hom.
(b) Residual pulsating DC tam sim no.
(c) Ib tug du DC tam sim no ntawm 0.006A yog superimposed ntawm cov residual pulsating DC tam sim no.
Hom B to Circuit Court breaker —— (CHINAEVSE tuaj yeem ua RCD Hom B)
Hom B to Circuit Court breakers muaj kev ntseeg siab tiv thaiv sinusoidal AC signals, pulsating DC signals thiab smooth signals, thiab muaj kev tsim ntau dua li hom A to Circuit Court breakers.Nws ua kom tripping nyob rau hauv cov xwm txheej hauv qab no:
a) Ib yam li Hom A.
b) Residual sinusoidal alternating tam sim no rau 1000 Hz.
c) Cov seem AC tam sim no yog superimposed nrog ib tug du DC tam sim no ntawm 0.4 npaug ntawm cov nqi seem tam sim no
d) Cov residual pulsating DC tam sim no yog superimposed nrog 0.4 npaug ntawm cov khoom seem tam sim no lossis DC tam sim no du ntawm 10mA (qhov twg ntau dua).
e) Residual DC tam sim no tsim los ntawm cov nram qab no rectification circuits:
- ob ib nrab-yoj choj txuas kab rau kab rau 2-, 3- thiab 4-ncej ntiaj teb to Circuit Court breakers.
- Rau 3-ncej thiab 4-ncej lub ntiaj teb to Circuit Court breakers, 3 ib nrab-yoj hnub qub kev sib txuas los yog 6 ib nrab-yoj choj txuas.
Post lub sij hawm: Jun-19-2023