Thaum tib neeg xav txog cov ntsuas hluav taws xob, lawv feem ntau pom cov duab loj, phab ntsa -mounted meter hauv lawv lub tsev. Tab sis cov neeg uas tau pom cov chaw them nqi yuav paub tias cov meters muaj me me, tsim tshwj xeeb, thiab txawv ntawm cov ntsuas tsev.
Yog li, dab tsi raws nraim qhov chaw nres tsheb ntsuas ntsuas zoo li, txij li lawv kuj ntsuas hluav taws xob? Dab tsi yog cov qauv ntawm cov chaw nres tsheb them nqi hluav taws xob hauv Suav teb, thiab lawv txawv li cas hauv kev lag luam txawv teb chaws? Niaj hnub no, peb yuav ua tib zoo saib thiab pab koj nkag siab qhov ins thiab outs ntawm them chaw nres tsheb meters!
Hauv tsev DC Charging Pile Hluav Taws Xob Meters
1. Cov Hluav Taws Xob Hluav Taws Xob Cov Hluav Taws Xob Hluav Taws Xob Hluav Taws Xob los ntawm ntau xyoo dhau los
Yog tias koj nyob hauv kev lag luam siv cov khoom siv, tej zaum koj yuav tau pom tias cov ntsuas hluav taws xob hauv cov DC ceev them cov pawg thaum ntxov tau loj heev peb -theem AC zog ntsuas.
Peb cov -theem zog ntsuas hluav taws xob no tau siv los ntsuas cov nqi hluav taws xob, suav nrog kev poob ntawm AC- mus rau - DC hloov pauv. Yog tias lub ntsuas hluav taws xob nyeem 100 kWh, lub tsheb hluav taws xob yuav tsuas yog tau txais 95 kWh xwb -ze li 5% ntawm qhov poob tau absorbed sab hauv los ntawm pawg them, tab sis tus neeg siv tseem raug them raws li 100 kWh. Txoj kev ntsuas tsis ncaj ncees no tau ua rau kev ploj tag ntawm peb -theem AC meters nyob rau hauv niaj hnub kev khiav hauj lwm ceev ceev pawg.
Siv AC meters hauv DC ceev them pawg yog qhov tsis tsim nyog thiab tsis tshua muaj, tshwj tsis yog cov "antique" ceev them pawg. Yav dhau los, feem ntau them pawg siv DC lub zog ntsuas hluav taws xob zoo ib yam li tsev neeg ib leeg -theem meters.
Txhawm rau nkag mus rau hauv DC metering lag luam sai, cov tuam txhab hluav taws xob thaum ntxov tau ncaj qha txais kev paub tab AC meter casing tsim, tsuas yog hloov kho me me rau cov ntsuas ntsuas sab hauv nti thiab cov hlua hluav taws xob kom ua tiav DC hluav taws xob ntsuas. Thaum qhov "tshiab cawv txiv hmab hauv lub hwj qub" txoj hauv kev daws qhov teeb meem ntawm qhov muaj, tseem muaj chaw tseem ceeb rau kev txhim kho nyob rau hauv cov nqe lus ntawm kev yooj yim installation thiab qhov chaw siv.
2. Tam sim no Mainstream Hluav Taws Xob Meters rau cov chaw nres tsheb ceev ceev
Tom qab ntawd, kev ua lag luam pom qhov tshwm sim ntawm me me DIN rail -mounted DC zog ntsuas, ib qho "hloov hloov" rau phab ntsa-mounted meters, thiab lub ntsiab kev xaiv rau DC them chaw nres tsheb los ntawm 2020-2025. Nws qhov tseem ceeb tshaj plaws yog nws dual -circuit design- txuas ob sab nraud shunts (feem ntau 75mV tso zis) tso cai rau kev ywj pheej lub zog ntsuas ntawm dual - phom them chaw nres tsheb ib txhij, tshem tawm qhov xav tau ntxiv ntsuas thiab ua kom zoo rau cov xwm txheej xws li kev them nyiaj ceev dual-gun.
Piv rau phab ntsa -mounted meters, DIN rail-mounted meters ua raws li DIN tus qauv kev tsheb nqaj hlau kev teeb tsa (feem ntau 35 hli rails), txo qhov loj ntawm ze li ntawm 40% thiab tso cai ncaj qha mus rau hauv qhov hluav taws xob tswj txee ntawm qhov chaw them nqi, txuag qhov chaw teeb tsa tseem ceeb. Nrog nws qhov "compact + practical" zoo, nws sai hloov lub lag luam txoj hauj lwm ntawm phab ntsa -mounted meters.
Txawm li cas los xij, tsis paub txog ntau yam, thaum ntxov li 2020, UBS Electronics ntsiag to tsim lub DC lub zog ntsuas nrog kev sib xyaw ua ke. Niaj hnub no, qhov no tau dhau los ua cov cuab yeej ntsuas qhov tseem ceeb rau DC charging chaw nres tsheb, thiab yog hom kev paub zoo tshaj plaws thiab muaj npe nrov.
Nws overturns tus qauv cais ntawm "meter + sab nraud shunt," integrating lub shunt (tam sim no sampling caij) nrog lub meter lub cev rau hauv ib chav tsev, thiab kuj ua tiav tag nrho cov sealing- hauv paus tsis txhob muaj teeb meem xws li shunt -meter mismatch yuam kev, xoob thaiv, thiab tampering inherent nyob rau hauv nyias tsim. Nws ua raws li cov cai tiv thaiv -tampering ntawm "Technical Management Regulations for Electricity Metering Devices." Raws li cov ntaub ntawv kuaj kev lag luam, kev tsim kev sib xyaw tuaj yeem txo cov ntsiab lus tsis raug sab nraud los ntawm 80%, thiab tus nqi tsis ua haujlwm txhua xyoo tuaj yeem tswj tau qis dua 0.5‰.
Hauv tsev AC Charging Chaw nres tsheb hluav taws xob ntsuas
AC them chaw nres tsheb tuaj yeem tham hauv ob ntu. Rau lub tsev- nruab AC qeeb them chaw nres tsheb, tus nqi ntau ntawm ntau pua txog ntau txhiab yuan. Cov chaw them nqi no zoo li lub zog loj thiab tsis muaj lossis xav tau lub ntsuas hluav taws xob. Lub ntsuas hluav taws xob hauv tsev tuaj yeem ntsia tau los ntawm Lub Xeev Grid lossis lwm lub tuam txhab hluav taws xob.
Rau kev lag luam ua lag luam AC them chaw nres tsheb, lub ntsuas hluav taws xob cais yuav tsum tau muab tso rau hauv. Cov ntsuas no feem ntau me me thiab siv DIN rail mounting system. Nws cov nta muaj xws li:
Compact me me: Mounted ntawm DIN 35mm tus qauv tsheb ciav hlau, nws cov qauv compact ua rau nws tsim nyog rau kev koom ua ke rau hauv lub thawv tswj sab hauv ntawm lub chaw them nyiaj.
Kev ntseeg tau qhov tseeb: Feem ntau 0.5 lossis 1 qib raug, ua tau raws li qhov yuav tsum tau ua lag luam.
Muaj peev xwm sib txuas lus muaj zog: Tus qauv RS485 interface, txhawb cov txheej txheem xws li Modbus-RTU thiab DL/T645.
Kev lag luam ua lag luam AC chaw nres tsheb yog muaj nyob rau hauv cov chaw nres tsheb, khw hauv khw hauv av, thiab lwm yam. Lawv feem ntau siv AC peb -theem zog ntsuas, muaj peev xwm ntsuas lub zog siab dua (60A txog 100A lossis siab dua), thiab tuaj yeem them ntau lub tsheb hluav taws xob ib txhij.
Overseas DC Charging Pile Meters
Ntau lub teb chaws thiab cheeb tsam muaj cov qauv sib txawv rau kev them cov pawg, uas ua rau muaj qhov sib txawv ntawm txawv teb chaws thiab hauv tsev them pawg, uas kuj tau cuam tshuam txog ntau qhov sib txawv ntawm cov nqi them pawg.
Hauv kev ua lag luam nyob sab Europe, tshwj xeeb tshaj yog nyob rau hauv lub tebchaws xws li lub teb chaws Yelemees, cov ntsuas hluav taws xob tau dhau los ua qhov tseem ceeb ntawm kev them nqi. Los ntawm kev pom kev, cov ntsuas ntsuas kuj tseem cuam tshuam cov teb chaws Europe qhov tseem ceeb ntawm kev ywj pheej ntawm cov cuab yeej ntsuas ntsuas.
Txawm hais tias MID Cov Lus Qhia tsis tau hais meej meej tias "cov ntsuas hluav taws xob yuav tsum raug nthuav tawm," nws cov kev cai rau kev ntsuas qhov pom tseeb thiab kev tiv thaiv tamper tau hloov zuj zus mus rau hauv kev ua lag luam, ua rau muaj cov ntsuas hluav taws xob lossis cov khoom siv ywj pheej.
Qhov tseem ceeb tshaj, MID daim ntawv pov thawj (EU Measuring Instrument Directive certification) yog "cov ntawv pov thawj txuj ci" rau cov ntsuas hluav taws xob nkag mus rau European lag luam. Cov kev cai rau MID daim ntawv pov thawj suav nrog:
| Yuav tsum Dimension | Cov ntsiab lus tshwj xeeb |
|---|---|
| Kev ntsuas qhov tseeb | Muab cov txiaj ntsig ntsuas qhov tseeb nyob rau hauv qhov kev lees paub qhov yuam kev raws li qhov xav tau ntawm kev siv |
| Repeatability thiab Durability | Ua haujlwm ruaj khov nyob rau hauv ib puag ncig thiab kev siv sib txawv |
| Kev nyab xeeb thiab tiv thaiv - cuam tshuam muaj peev xwm | Muaj peev xwm tiv thaiv - cuam tshuam thiab tiv thaiv - tiv thaiv kev hloov pauv tsis raug cai |
| Qhia meej meej | Kev ntsuas kev nyeem ntawv yuav tsum yooj yim nyeem thiab tsis muaj kev nkag siab yuam kev |
MID daim ntawv pov thawj feem ntau siv tau rau 5 xyoos, thiab cov ntaub ntawv kev tshaj lij yuav tsum tau khaws cia rau tsawg kawg 10 xyoo nyob rau hauv rooj plaub ntawm kev txheeb xyuas los ntawm EU tus tswj hwm kev lag luam.
Nyob rau hauv 300kW-theem supercharging chaw nres tsheb scenarios, DC lub zog ntsuas nrog MID ntawv pov thawj tau dhau los ua cov cuab yeej siv rau kev lag luam txawv teb chaws, xws li J5021-FI qauv, uas suav nrog ntau yam ntawm 50-1000V thiab 3.6-600A, nrog rau qhov tseeb ntawm Chav Kawm C (0.5r) ntau dua li qhov kev txwv ntawm EU. MID Cov Lus Qhia.
Overseas AC Charging Station Energy Meters
Cov chaw nres tsheb AC them nyiaj txawv teb chaws yog tus cwj pwm los ntawm lub zog siab, muaj zog ua raws, cov qauv kev sib txuas lus, thiab kev sib txuas lus ntse. Hauv EU, lawv tau sib xws nrog MID AC lub zog ntsuas thiab PTB cov ntawv pov thawj, thaum nyob hauv North America, lawv tau sib xws nrog UL lossis CSA ntawv pov thawj AC zog ntsuas.
Raws li pom nyob rau hauv daim duab saum toj no, AC lub zog ntsuas ntawm cov chaw them nqi no tsis txawv txav los ntawm cov chaw them nyiaj hauv tsev. Qhov sib txawv tseem ceeb yog nyob rau hauv cov khoom siv hluav taws xob, cov txheej txheem kev sib txuas lus, thiab cov ntawv pov thawj.
Summary of Certification Differences:
| Kev ua lag luam | Voltage thiab zaus | AC Charging Pile Meter Certification |
|---|---|---|
| Tuam Tshoj | AC 220V / 380V 50Hz | CPA Hom Pom Zoo rau Kev Ntsuas Ntsuas |
| EU | AC 230V / 400V 50Hz | Daim ntawv pov thawj MID / CE / RoHS |
| North America | AC 240V / 480V 60Hz | UL los yog CSA Certification |
Cov ntsiab lus
Los ntawm thaum ntxov "kev hloov pauv ntawm phab ntsa- mounted AC meters rau DC" mus rau niaj hnub no lub mature integrated DC zog meters, them pawg meters tau undergone ib tug leap ntawm "usable" mus rau "yooj yim siv" thiab ces mus rau "ua raws li txawv teb chaws expansion." Txawm hais tias nyob rau hauv kev lag luam hauv tsev lossis txawv teb chaws, kev txhim kho ntawm cov khoom siv hluav taws xob ntsuas taw qhia rau peb cov lus qhia: me me, qhov tseeb dua, thiab cov ntawv pov thawj ntau dua.
Rau cov neeg ua haujlwm them nyiaj, xaiv lub ntsuas hluav taws xob tsis yog tsuas yog xaiv cov cuab yeej ntsuas kev ntsuas, tab sis kuj tseem hais txog kev xaiv txoj kev ua raws cai thiab kev ua haujlwm zoo. Vam tias, qhov kev tshuaj xyuas ntawm cov khoom siv hluav taws xob no yuav pab koj kom tsis txhob muaj kev cuam tshuam thaum yuav khoom!