Ntsaws lub qhov txuas them, tab sis nws tsis tuaj yeem them tau, kuv yuav tsum ua li cas?
Ntxiv rau qhov teeb meem ntawm lub pob them lossis lub voj voog fais fab nws tus kheej, qee tus tswv tsheb uas nyuam qhuav tau txais lub tsheb yuav ntsib qhov xwm txheej no thaum lawv them thawj zaug. Tsis xav tau them. Muaj peb qhov laj thawj rau qhov xwm txheej no: lub pob them tsis tau grounded zoo, lub zog them qis dhau, thiab lub cua hloov (circuit breaker) me dhau rau kev mus ncig.
1. Lub EV Charger tsis tau grounded zoo
Vim yog kev nyab xeeb, thaum them lub tsheb fais fab tshiab, lub voj voog fais fab yuav tsum tau grounded kom zoo, yog li ntawd yog tias muaj qhov xau tsis tau xav txog (xws li muaj qhov teeb meem hluav taws xob loj hauv lub tsheb fais fab uas ua rau lub rwb thaiv tsev tsis ua haujlwm ntawm cov xov hlau AC thiab lub cev), cov hluav taws xob xau tuaj yeem tso rov qab mus rau qhov faib hluav taws xob los ntawm cov xov hlau hauv av. Lub davhlau ya nyob twg yuav tsis muaj kev phom sij thaum tib neeg kov nws tsis tau xav txog vim muaj cov hluav taws xob xau ntawm lub tsheb.
Yog li ntawd, muaj ob qho yuav tsum tau ua ua ntej rau kev phom sij ntawm tus kheej los ntawm kev xau: ① Muaj kev puas tsuaj loj heev ntawm hluav taws xob hauv lub tsheb; ② Lub pob them tsis muaj kev tiv thaiv xau lossis kev tiv thaiv xau tsis ua haujlwm. Qhov feem pua ntawm ob hom xwm txheej no tshwm sim yog qis heev, thiab qhov feem pua ntawm kev tshwm sim tib lub sijhawm yog 0.
Ntawm qhov tod tes, vim yog cov laj thawj xws li tus nqi tsim kho thiab cov neeg ua haujlwm qib thiab zoo, ntau lub tsev faib hluav taws xob thiab kev tsim kho vaj tse hluav taws xob tsis tau ua tiav raws li cov kev cai tsim kho. Muaj ntau qhov chaw uas hluav taws xob tsis tau grounded zoo, thiab nws tsis tsim nyog los yuam cov chaw no kom txhim kho grounding vim yog qhov maj mam nrov ntawm cov tsheb fais fab. Raws li qhov no, nws yog qhov ua tau los siv cov charging piles tsis muaj av los them cov tsheb fais fab, muab tias cov charging piles yuav tsum muaj lub voj voog tiv thaiv kev xau, yog li ntawd txawm tias lub tsheb fais fab tshiab muaj kev ua tsis tiav thiab kev sib cuag tsis raug, nws yuav raug cuam tshuam raws sijhawm. Qhib lub voj voog fais fab kom ntseeg tau tias muaj kev nyab xeeb ntawm tus kheej. Ib yam li txawm hais tias ntau tsev neeg nyob hauv thaj chaw nyob deb nroog tsis tau grounded zoo, cov tsev neeg tau nruab nrog cov tiv thaiv kev xau, uas tuaj yeem tiv thaiv kev nyab xeeb ntawm tus kheej txawm tias muaj hluav taws xob poob siab tsis raug. Thaum lub charging piles tuaj yeem them tau, nws yuav tsum muaj lub luag haujlwm ceeb toom tsis-grounding los qhia rau tus neeg siv tias qhov kev them tam sim no tsis tau grounded zoo, thiab nws yog qhov tsim nyog yuav tsum ceev faj thiab ua tib zoo saib xyuas.
Yog tias muaj teeb meem hauv av, lub pob them hluav taws xob tseem tuaj yeem them lub tsheb fais fab. Txawm li cas los xij, lub cim qhia txog qhov teeb meem ci ntsa iab, thiab lub vijtsam ceeb toom txog kev sib txuas hauv av tsis zoo, ceeb toom tus tswv kom ua tib zoo saib xyuas kev nyab xeeb.
2. Lub zog them hluav taws xob qis dhau
Qhov hluav taws xob qis yog lwm qhov laj thawj tseem ceeb uas ua rau lub tsheb them tsis tau zoo. Tom qab paub tseeb tias qhov txhaum tsis yog los ntawm kev tsis muaj av, qhov hluav taws xob qis dhau tej zaum yuav yog qhov ua rau lub tsheb them tsis tau zoo li qub. Lub zog hluav taws xob AC uas them tau tuaj yeem saib tau los ntawm lub rooj them uas muaj zaub lossis lub chaw tswj hwm ntawm lub tsheb fais fab tshiab. Yog tias lub rooj them tsis muaj lub vijtsam zaub thiab lub chaw tswj hwm ntawm lub tsheb fais fab tshiab tsis muaj cov ntaub ntawv txog lub zog hluav taws xob AC uas them tau, yuav tsum siv lub multimeter los ntsuas. Thaum lub zog hluav taws xob thaum lub sijhawm them qis dua 200V lossis qis dua 190V, lub rooj them lossis lub tsheb yuav tshaj tawm qhov yuam kev thiab tsis tuaj yeem them tau.
Yog tias nws tau lees paub tias qhov voltage qis dhau, nws yuav tsum tau daws los ntawm peb yam:
A. Xyuas cov lus qhia ntawm cov xov hluav taws xob. Yog tias koj siv 16A rau kev them, cov xov yuav tsum muaj tsawg kawg yog 2.5mm² lossis ntau dua; yog tias koj siv 32A rau kev them, cov xov yuav tsum muaj tsawg kawg yog 6mm² lossis ntau dua.
B. Lub zog hluav taws xob ntawm cov khoom siv hluav taws xob hauv tsev nws tus kheej qis. Yog tias qhov no yog qhov teeb meem, nws yog qhov tsim nyog los xyuas seb cov xov hlau ntawm qhov kawg ntawm tsev neeg puas siab dua 10mm², thiab seb puas muaj cov khoom siv hluav taws xob muaj zog siab hauv tsev neeg.
C. Thaum lub sijhawm siv hluav taws xob ntau tshaj plaws, lub sijhawm siv hluav taws xob ntau tshaj plaws yog 6:00 teev tsaus ntuj txog 10:00 teev tsaus ntuj. Yog tias lub zog hluav taws xob qis dhau thaum lub sijhawm no, nws tuaj yeem tso tseg ua ntej. Feem ntau, lub pob them yuav rov pib them dua tom qab lub zog hluav taws xob rov qab mus rau qhov qub.
Thaum tsis them, qhov hluav taws xob tsuas yog 191V xwb, thiab qhov hluav taws xob poob ntawm cov xov hlau yuav qis dua thaum them, yog li lub pob them hluav taws xob qhia txog qhov tsis muaj hluav taws xob txaus thaum lub sijhawm no.
3. Lub qhov hloov cua (lub tshuab hluav taws xob) raug tsoo
Kev them fais fab rau lub tsheb yog hom hluav taws xob muaj zog heev. Ua ntej yuav them lub tsheb fais fab, yuav tsum paub tseeb tias lub qhov hloov cua ntawm qhov kev qhia tshwj xeeb puas siv tau. Kev them 16A xav tau lub qhov hloov cua 20A lossis siab dua, thiab kev them 32A xav tau lub qhov hloov cua 40A lossis siab dua.
Yuav tsum tau hais meej tias kev them lub tsheb fais fab tshiab yog siv hluav taws xob muaj zog heev, thiab nws yog qhov tsim nyog los xyuas kom meej tias tag nrho cov khoom siv hluav taws xob: cov ntsuas hluav taws xob, cov xov hlau, cov hloov cua, cov ntsaws thiab cov qhov (socket) thiab lwm yam khoom siv ua tau raws li qhov yuav tsum tau them. Qhov twg tsis raws li qhov tau teev tseg, qhov twg yuav hlawv tawm lossis ua tsis tiav.
Lub sijhawm tshaj tawm: Tsib Hlis-30-2023