GBT 18487.1-2015 txhais lub sij hawm residual tam sim no tiv thaiv raws li hauv qab no: Residual tam sim no tiv thaiv (RCD) yog ib tug neeg kho tshuab switchgear los yog ua ke ntawm cov khoom siv hluav taws xob uas muaj peev xwm hloov mus rau, nqa thiab tawg tam sim no nyob rau hauv ib txwm ua hauj lwm tej yam kev mob, thiab disconnect cov neeg thaum qhov seem tam sim no ncav cuag tus nqi teev.Nws yog cov khoom siv hluav taws xob hloov hluav taws xob lossis kev sib txuas ntawm cov khoom siv hluav taws xob uas tuaj yeem hloov pauv, nqa thiab tawg tam sim no raws li kev ua haujlwm ib txwm muaj thiab tuaj yeem rhuav tshem cov neeg sib cuag thaum qhov seem tam sim no nce mus txog tus nqi raws li cov xwm txheej teev tseg.
Ntau hom kev tiv thaiv tam sim no muaj rau cov xwm txheej tiv thaiv sib txawv thiab qhov tsim nyog ntawm kev tiv thaiv tam sim no yuav tsum raug xaiv rau qhov xwm txheej los tiv thaiv.
Raws li cov qauv kev faib tawm ntawm cov khoom seem uas muaj DC cov yam ntxwv ua haujlwm, cov khoom tiv thaiv tam sim no feem ntau muab faib ua AC hom residual tam sim no tiv thaiv, A hom residual tam sim no tiv thaiv, F hom residual tam sim no tiv thaiv thiab B hom residual tam sim no tiv thaiv.Lawv lub luag haujlwm yog raws li hauv qab no.
AC hom residual tiv thaiv tam sim no: sinusoidal AC residual tam sim no.
Hom A residual tam sim no tiv thaiv: AC hom muaj nuj nqi, pulsating DC seem tam sim no, pulsating DC residual tam sim no superimposed ntawm 6mA ntawm DC tam sim no.
Hom F residual tam sim no tiv thaiv: Hom A, cov khoom seem seem tam sim no los ntawm circuits powered los ntawm theem thiab nruab nrab lossis theem thiab lub ntiaj teb intermediate conductors, pulsating DC residual tam sim no superimposed ntawm tus DC tam sim no ntawm 10mA.
Hom B residual tam sim no tiv thaiv: Hom F, sinusoidal AC residual tam sim no ntawm 1000Hz thiab hauv qab, AC seem tam sim no superimposed ntawm 0.4 npaug ntawm cov nqi residual tam sim no lossis 10mA du DC tam sim no (qhov twg ntau dua), pulsating DC residual tam sim no superimposed ntawm 0.4 npaug ntawm rated residual action tam sim no los yog 10mA du DC tam sim no (qhov twg ntau dua), DC seem tam sim no los ntawm rectified circuits, du DC residual tam sim no.
Lub hauv paus architecture ntawm EV on-board charger feem ntau muaj xws li EMI filtering rau seem input, rectification thiab PFC, lub hwj chim hloov Circuit Court, EMI lim rau cov zis seem, thiab lwm yam. Lub thawv liab nyob rau hauv daim duab hauv qab no qhia tau hais tias ib tug ob-theem fais fab mov. kho Circuit Court nrog ib qho kev sib cais transformer, qhov twg Lg1, lg2 thiab auxiliary capacitors tsim cov input EMI lim, L1, C1, D1, C3, Q5 daim ntawv step-up hom Lub pem hauv ntej theem PFC Circuit Court, Q1, Q2, Q3, Q4, T1 , D2, D3, D4, D5 daim ntawv hloov hluav taws xob hloov hluav taws xob ntawm cov theem tom qab, Lg3, lg4 thiab auxiliary capacitors tsim cov zis EMI lim kom txo tus nqi ripple.
Thaum lub sij hawm siv lub tsheb, yuav muaj inevitably muaj pob thiab vibrations, ntaus ntawv aging thiab lwm yam teeb meem uas yuav ua rau lub rwb thaiv tsev nyob rau hauv lub tsheb charger teeb meem, thiaj li hais tias rau lub tsheb charger nyob rau hauv lub AC charging txheej txheem nyob rau hauv sib txawv qhov chaw ntawm kev tsis ua hauj lwm hom tsom xam. tuaj yeem tau txais raws li hauv qab no tsis ua haujlwm hom.
(1) hauv av txhaum ntawm AC sab ntawm lub nroog cov tswv yim, ntawm qhov taw tes qhov txhaum tam sim no yog kev lag luam zaus AC tam sim no.
(2) Kev txhaum hauv av hauv ntu rectifier, qhov twg qhov txhaum tam sim no yog pulsating DC tam sim no.
(3) DC / DC av txhaum ntawm ob sab, thaum qhov txhaum tam sim no yog DC tam sim no.
(4) Kev sib cais transformer hauv av txhaum, qhov txhaum tam sim no tsis yog AC tam sim no.
Los ntawm A hom residual tam sim no tiv thaiv kev ua haujlwm tuaj yeem paub, nws tuaj yeem tiv thaiv AC hom kev ua haujlwm, pulsating DC residual tam sim no, pulsating DC residual tam sim no superimposed tsawg dua 6mA du DC tam sim no, thiab lub tsheb charger DC txhaum tam sim no ≥ 6mA, A hom residual tam sim no tus tiv thaiv yuav tshwm sim hysteresis los yog yuav tsis ua, uas ua rau ib txwm ua hauj lwm, ces tus residual tam sim no protector yuav poob qhov kev tiv thaiv muaj nuj nqi.
Cov txheej txheem European IEC 61851 tsis tso cai rau Hom B, tab sis rau EVSEs nrog Hom A qhov seem tiv thaiv tam sim no, nws yog ib qho tsim nyog los xyuas kom meej tias qhov txhaum Circuit Court nrog DC cov ntsiab lus ntau dua 6mA raug txiav tawm, ib lossis lwm qhov.Ua ke nrog kev tsom xam ntawm cov saum toj no residual tiv thaiv tam sim no xaiv, nws yog tseeb hais tias yog hais tias cov saum toj no txhaum kev tiv thaiv yuav tsum tau ntsib, los ntawm ib tug kev ruaj ntseg point ntawm view, yuav tsum tau ib tug hom B residual tiv thaiv tam sim no.
Post lub sij hawm: Jan-20-2022
