Nyob rau hauv lub hnub ci zog system, micro PV inverters ua lub luag haujlwm tseem ceeb hauv kev hloov pauv tam sim no (DC) tsim los ntawm lub hnub ci vaj huam sib luag rau hauv kev hloov tam sim no (AC) uas tuaj yeem siv hauv tsev thiab kev lag luam. Thaum micro PV inverters muab cov txiaj ntsig xws li kev txhim kho lub zog tawm los thiab ua kom yooj yim dua, xaiv cov kab kev sib txuas zoo yog qhov tseem ceeb rau kev ua kom muaj kev nyab xeeb thiab kev ua haujlwm zoo. Hauv phau ntawv qhia no, peb yuav taug kev koj los ntawm cov xwm txheej los txiav txim siab thaum xaiv txoj kev daws teeb meem rau micro PV inverter txuas kab, pab koj txiav txim siab paub txog koj lub hnub ci teeb.
Nkag siab txog Micro PV Inverters thiab lawv cov kab sib txuas
Micro PV inverters txawv ntawm cov hlua ib txwm siv nyob rau hauv uas txhua microinverter yog khub nrog ib lub hnub ci vaj huam sib luag. Qhov kev teeb tsa no tso cai rau txhua lub vaj huam sib luag ua haujlwm ntawm nws tus kheej, txhim kho lub zog ntau lawm txawm tias ib lub vaj huam sib luag yog qhov ntxoov ntxoo lossis ua haujlwm tsis zoo.
Cov kab sib txuas ntawm lub hnub ci vaj huam sib luag thiab microinverters yog qhov tseem ceeb rau kev ua haujlwm zoo thiab kev nyab xeeb. Cov kab no nqa DC lub zog los ntawm cov vaj huam sib luag mus rau microinverters, qhov twg nws hloov mus rau AC siv rau hauv daim phiaj hluav taws xob lossis kev siv hauv tsev. Xaiv txoj hlua hluav taws xob kom raug yog qhov tseem ceeb los tswj lub zog xa hluav taws xob, tiv thaiv lub cev los ntawm ib puag ncig kev ntxhov siab, thiab tswj cov qauv kev nyab xeeb.
Yam tseem ceeb uas yuav tsum tau xav txog thaum xaiv cov kab sib txuas
Thaum xaiv cov kab sib txuas rau micro PV inverters, ntau yam tseem ceeb yuav tsum raug coj mus rau hauv tus account kom ntseeg tau tias kev ua tau zoo thiab kev nyab xeeb.
1. Cable hom thiab rwb thaiv tsev
Rau micro PV inverter systems, nws yog ib qho tseem ceeb uas yuav tau siv cov hnub ci-rated cables zoo liH1Z2Z2-K or PV 1-F, uas yog tsim tshwj xeeb rau kev siv photovoltaic (PV). Cov cables no muaj cov rwb thaiv tsev zoo uas tiv thaiv UV hluav taws xob, noo noo, thiab hnyav ib puag ncig. Lub rwb thaiv tsev yuav tsum muaj zog txaus los tswj qhov nruj ntawm sab nraum zoov raug thiab tiv thaiv degradation dhau sijhawm.
2. Tam sim no thiab Voltage Ratings
Cov kab txuas uas tau xaiv yuav tsum muaj peev xwm tuav tau tam sim no thiab qhov hluav taws xob tsim los ntawm cov hnub ci vaj huam sib luag. Xaiv cov cables nrog cov kev ntsuas tsim nyog tiv thaiv cov teeb meem xws li overheating lossis overvoltage poob, uas tuaj yeem ua rau lub cev puas tsuaj thiab txo nws txoj kev ua haujlwm. Piv txwv li, xyuas kom lub cable qhov voltage ntsuas qhov sib tw los yog tshaj qhov system qhov siab tshaj plaws voltage kom tsis txhob muaj hluav taws xob tawg.
3. UV thiab huab cua Resistance
Txij li lub hnub ci tshuab feem ntau ntsia sab nraum zoov, UV thiab huab cua tiv thaiv yog qhov tseem ceeb. Cov kab kev sib txuas yuav tsum muaj peev xwm tiv taus ntev ntev rau lub hnub ci, nag, daus, thiab qhov kub thiab txias yam tsis muaj kev cuam tshuam rau lawv txoj kev ncaj ncees. Cov kab hluav taws xob zoo tuaj nrog cov tsho tiv thaiv UV los tiv thaiv cov xaim los ntawm kev puas tsuaj ntawm lub hnub.
4. Kub Tolerance
Hnub ci lub zog hluav taws xob muaj qhov sib txawv ntawm qhov kub thiab txias txhua hnub thiab txhua lub caij. Cov kab hluav taws xob yuav tsum muaj peev xwm ua haujlwm tau zoo nyob rau hauv ob qho tib si siab thiab qis kub yam tsis tau poob yooj yim los yog ua nkig. Saib rau cov cables uas muaj qhov kub thiab txias ua haujlwm kom ntseeg tau tias muaj kev ntseeg siab hauv huab cua huab cua.
Cable Sizing thiab Length Considerations
Kev tsim cov kab hluav taws xob zoo yog qhov tseem ceeb rau kev txo qis zog poob thiab ua kom lub cev ua haujlwm tau zoo. Cov kab hluav taws xob tsis zoo tuaj yeem ua rau lub zog ntau dhau vim qhov tsis kam, ua rau lub zog poob qis uas txo qhov kev ua haujlwm ntawm koj lub microinverter. Tsis tas li ntawd, cov kab hluav taws xob tsis zoo tuaj yeem ua kom sov, ua rau muaj kev nyab xeeb.
1. Minimizing Voltage poob
Thaum xaiv qhov tsim nyog cable loj, koj yuav tsum xav txog tag nrho qhov ntev ntawm txoj kab txuas. Ntev ntev cable khiav ua rau kom muaj peev xwm poob qis, uas tuaj yeem txo qhov kev ua haujlwm ntawm koj lub cev. Txhawm rau tiv thaiv qhov no, nws yuav tsum tau siv cov kab loj-txoj kab uas hla ntev dua kom paub meej tias qhov hluav taws xob xa mus rau microinverters tseem nyob hauv qhov kev lees paub.
2. Tsis txhob overheating
Kev siv qhov loj ntawm cable yog qhov tseem ceeb rau kev tiv thaiv overheating. Cables uas me dhau rau tam sim no lawv nqa yuav ua kom sov thiab degrade nyob rau lub sijhawm, uas ua rau muaj kev puas tsuaj los yog hluav taws kub. Nco ntsoov xa mus rau cov chaw tsim khoom cov txheej txheem thiab cov qauv kev lag luam los xaiv qhov tseeb cable loj rau koj lub cev.
Connector thiab Junction Box Xaiv
Cov khoom sib txuas thiab cov thawv sib txuas ua lub luag haujlwm tseem ceeb hauv kev tswj xyuas kev ntseeg tau ntawm kev sib txuas ntawm cov hnub ci vaj huam sib luag thiab microinverters.
1. Xaiv cov kev sib txuas uas ntseeg tau
High-quality, weatherproof connectors yog ib qho tseem ceeb rau kev ruaj ntseg kev sib txuas ntawm cables. Thaum xaiv cov khoom sib txuas, nrhiav cov qauv uas tau ntawv pov thawj rau PV daim ntawv thov thiab muab lub kaw ntom ntom, tsis muaj dej tsis zoo. Cov connectors no yuav tsum yooj yim rau nruab thiab ruaj khov txaus los tiv thaiv kev raug mob sab nraum zoov.
2. Junction Boxes rau kev tiv thaiv
Cov thawv sib txuas hauv tsev sib txuas ntawm ntau lub cables, tiv thaiv lawv los ntawm ib puag ncig kev puas tsuaj thiab ua kom yooj yim dua. Xaiv cov thawv sib txuas uas muaj kev tiv thaiv corrosion thiab tsim rau kev siv sab nraum zoov kom muaj kev tiv thaiv ntev ntawm koj cov hlua.
Ua raws li Kev Lag Luam Cov Qauv thiab Ntawv Pov Thawj
Txhawm rau kom ntseeg tau tias koj lub micro PV inverter system muaj kev nyab xeeb thiab txhim khu kev qha, txhua yam khoom siv, suav nrog cov kab sib txuas, yuav tsum ua raws li cov qauv kev lag luam lees paub thiab cov ntawv pov thawj.
1. International Standards
Cov txheej txheem thoob ntiaj teb xws liTS EN 62930 IEC 62930 (ib(rau cov hnub ci cables) thiabTIAB SA 4703(rau photovoltaic hlau nyob rau hauv Teb Chaws Asmeskas) muab cov lus qhia rau kev nyab xeeb thiab kev ua tau zoo ntawm kev sib txuas hnub ci kab. Kev ua raws li cov qauv no tau lees paub tias cov cables ua tau raws li qhov yuav tsum tau ua yam tsawg kawg nkaus rau kev rwb thaiv tsev, qhov kub thiab txias, thiab kev ua haujlwm hluav taws xob.
2. Cov cai hauv zos
Ntxiv nrog rau cov qauv thoob ntiaj teb, nws tseem ceeb heev kom ua raws li cov cai hauv zos, xws liNational Electrical Code (NEC)nyob rau hauv lub tebchaws United States. Cov kev cai no feem ntau hais txog cov kev xav tau tshwj xeeb, xws li hauv av, tus neeg xyuas pib qhov loj me, thiab kev xa xov cable, uas tsim nyog rau kev ua haujlwm ruaj ntseg.
Kev xaiv cov kab ntawv pov thawj thiab cov khoom siv tsis yog tsuas yog ua kom muaj kev nyab xeeb ntawm lub cev tab sis kuj tseem yuav tsum tau rau kev pov hwm lub hom phiaj lossis kom tsim nyog rau cov nyiaj rov qab thiab kev txhawb zog.
Cov kev coj ua zoo tshaj plaws rau kev txhim kho thiab tu
Txhawm rau kom muaj kev nyab xeeb thiab ua haujlwm tau zoo ntawm koj lub micro PV inverter system, ua raws li cov kev coj ua zoo tshaj plaws rau kev txhim kho thiab tswj cov kab txuas.
1. Routing thiab ruaj ntseg zoo
Txhim kho cov kab hluav taws xob hauv ib txoj hauv kev uas tiv thaiv lawv los ntawm kev puas tsuaj rau lub cev, xws li siv cov kav dej lossis cov tais cable kom tiv thaiv kom tsis txhob raug cov npoo ntse lossis cov chaw tsheb loj. Cables tseem yuav tsum tau muab khi kom ruaj ntseg kom tsis txhob txav mus los vim muaj cua lossis kub hloov pauv.
2. Kev tshuaj xyuas tsis tu ncua
Tsis tu ncua tshuaj xyuas koj cov kab kev sib txuas rau cov cim ntawm hnav thiab tsim kua muag, xws li tawg rwb thaiv tsev, corrosion, los yog xoob kev sib txuas. Hais txog tej teeb meem tam sim ntawd los tiv thaiv lawv kom tsis txhob muaj teeb meem loj dua.
3. Kev soj ntsuam System Performance
Kev soj ntsuam xyuas qhov kev ua tau zoo tuaj yeem pab koj txheeb xyuas cov teeb meem nrog cov xaim ua ntej lawv loj heev. Unexplained tee nyob rau hauv lub hwj chim tso zis yuav yog ib tug kos npe rau ntawm puas los yog deteriorating cables uas yuav tsum tau hloov.
Feem ntau yuam kev kom zam
Txawm tias muaj kev xav zoo tshaj plaws, kev ua yuam kev tuaj yeem tshwm sim thaum lub sijhawm teeb tsa lossis kev saib xyuas ntawm micro PV inverter txuas kab. Nov yog qee qhov yuam kev uas yuav tsum zam:
- Siv cov kab hluav taws xob tsis raug: Xaiv cov kab hluav taws xob nrog cov kev ntsuas uas tsis sib haum nrog lub kaw lus qhov hluav taws xob thiab tam sim no tuaj yeem ua rau overheating lossis hluav taws xob tsis ua haujlwm.
- Hla txoj kev tu ncua: Kev tsis saib xyuas thiab tswj cov kab txuas tsis tu ncua tuaj yeem ua rau muaj kev puas tsuaj uas cuam tshuam rau tag nrho cov kab ke.
- Siv Cov Cheebtsam Tsis Muaj Ntawv Pov Thawj: Siv cov khoom sib txuas tsis muaj ntawv pov thawj lossis tsis sib xws thiab cov cables ua rau muaj kev pheej hmoo ntawm kev ua tsis tiav thiab tej zaum yuav tsis muaj kev lees paub lossis kev pov hwm kev pov hwm.
Xaus
Xaiv cov kab kev sib txuas zoo rau koj lub micro PV inverter system yog qhov tseem ceeb rau kev ua kom muaj kev nyab xeeb, kev ua tau zoo, thiab kev ua haujlwm ntev. Los ntawm kev xaiv cov cables nrog cov rwb thaiv tsev tsim nyog, kev ntsuas tam sim no, thiab kev tiv thaiv ib puag ncig, thiab los ntawm kev ua raws li cov qauv kev lag luam, koj tuaj yeem ua kom zoo dua koj lub hnub ci rau ntau xyoo ntawm kev lag luam txhim khu kev qha. Nco ntsoov ua raws li kev coj ua zoo tshaj plaws rau kev teeb tsa thiab kev saib xyuas, thiab sab laj nrog tus kws tshaj lij yog tias koj tsis paub meej txog txhua yam ntawm qhov system.
Thaum kawg, kev nqis peev hauv cov khoom lag luam zoo, cov ntawv pov thawj kev sib txuas yog tus nqi me me piv rau cov txiaj ntsig ntawm kev ua kom muaj kev ruaj ntseg, kev ua tau zoo, thiab kav ntev.
Danyang Winpower Hlau & Cable Mfg Co., Ltd.tau tsim nyob rau xyoo 2009 thiab yog ib lub tuam txhab ua lag luam rau kev txhim kho kev lag luam, tsim khoom thiab muag khoom ntawm hnub ci photovoltaic cables. Lub photovoltaic DC sab cables tsim thiab tsim los ntawm lub tuam txhab tau txais ob daim ntawv pov thawj tsim nyog los ntawm German TÜV thiab American UL. Tom qab xyoo ntawm kev xyaum ntau lawm, lub tuam txhab tau sau cov kev paub nplua nuj nyob rau hauv hnub ci photovoltaic thaiv thiab muab cov neeg siv khoom nrog cov khoom zoo thiab cov kev pabcuam.
TÜV tau ntawv pov thawj PV1-F photovoltaic DC cable specifications
| Tus coj | Insulator | Txheej | Cov yam ntxwv hluav taws xob | ||||
| Hla ntu mm² | Hlau txoj kab uas hla | Txoj kab uas hla | Rwb thaiv tsev yam tsawg kawg nkaus thickness | Rwb thaiv tsev sab nraud | Txheej yam tsawg kawg nkaus thickness | Ua tiav sab nraud | Tus neeg xyuas pib tsis kam 20 ℃ Ohm / km |
| 1.5 | 30/0.254 ib | 1.61 ib | 0.60 ib | 3.0 | 0.66 ib | 4.6 | 13.7 ib |
| 2.5 | 50/0.254 ib | 2.07 Nws | 0.60 ib | 3.6 | 0.66 ib | 5.2 | 8.21 ib |
| 4.0 | 57/0.30 Nws | 2.62 ib | 0.61 ib | 4.05 Nws | 0.66 ib | 5.6 | 5.09 ib |
| 6.0 | 84/0.30 Nws | 3.50 Nws | 0.62 ib | 4.8 | 0.66 ib | 6.4 | 3.39 ib |
| 10 | 84/0.39 Nws | 4.60 ib | 0.65 ib | 6.2 | 0.66 ib | 7.8 ib | 1.95 ib |
| 16 | 133/0.39 Nws | 5.80 ib | 0.80 ib | 7.6 | 0.68 ib | 9.2 ib | 1.24 |
| 25 | 210/0.39 Nws | 7.30 Nws | 0.92 ib | 9.5 ib | 0.70 ib | 11.5 | 0.795 ib |
| 35 | 294/0.39 Nws | 8.70 ib | 1.0 | 11.0 Nws | 0.75 ib | 13.0 Nws | 0.565 ib |
UL ntawv pov thawj PV photovoltaic DC kab specifications
| Tus coj | Insulator | Txheej | Cov yam ntxwv hluav taws xob | ||||
|
AWG | Hlau txoj kab uas hla | Txoj kab uas hla | Rwb thaiv tsev yam tsawg kawg nkaus thickness | Rwb thaiv tsev sab nraud | Txheej yam tsawg kawg nkaus thickness | Ua tiav sab nraud | Tus neeg xyuas pib tsis kam 20 ℃ Ohm / km |
| 18 | 16/0.254 ib | 1.18 | 1.52 ib | 4.3 | 0.76 ib | 4.6 | 23.2 |
| 16 | 26/0.254 ib | 1.5 | 1.52 ib | 4.6 | 0.76 ib | 5.2 | 14.6 ib |
| 14 | 41/0.254 ib | 1.88 ib | 1.52 ib | 5.0 | 0.76 ib | 6.6 | 8.96 ib |
| 12 | 65/0.254 ib | 2.36 ib | 1.52 ib | 5.45 ib | 0.76 ib | 7.1 | 5.64 ib |
| 10 | 105/0.254 ib | 3.0 | 1.52 ib | 6.1 | 0.76 ib | 7.7 | 3.546 ib |
| 8 | 168/0.254 ib | 4.2 | 1.78 ib | 7.8 ib | 0.76 ib | 9.5 ib | 2.813 ib |
| 6 | 266/0.254 ib | 5.4 | 1.78 ib | 8.8 ib | 0.76 ib | 10.5 | 2.23 |
| 4 | 420/0.254 | 6.6 | 1.78 ib | 10.4 | 0.76 ib | 12.0 Nws | 1.768 ib |
| 2 | 665/0.254 ib | 8.3 | 1.78 ib | 12.0 Nws | 0.76 ib | 14.0 Nws | 1.403 ib |
| 1 | 836/0.254 ib | 9.4 ib | 2.28 | 14.0 Nws | 0.76 ib | 16.2 | 1.113 ib |
| 1/00 | 1045/0.254 ib | 10.5 | 2.28 | 15.2 | 0.76 ib | 17.5 Nws | 0.882 ib |
| 2/00 ib | 1330/0.254 ib | 11.9 ib | 2.28 | 16.5 ib | 0.76 ib | 19.5 Nws | 0.6996 ib |
| 3/00 Nws | 1672/0.254 ib | 13.3 | 2.28 | 18.0 Nws | 0.76 ib | 21.0 Nws | 0.5548 ib |
| 4/00 Nws | 2109/0.254 | 14.9 Nws | 2.28 | 19.5 Nws | 0.76 ib | 23.0 Nws | 0.4398 ib |
Xaiv qhov tsim nyog DC txuas cable yog qhov tseem ceeb rau kev nyab xeeb thiab ua haujlwm tau zoo ntawm cov txheej txheem photovoltaic. Danyang Winpower Wire & Cable muab cov kev daws teeb meem photovoltaic tiav los muab kev ua haujlwm zoo thiab ruaj khov lav rau koj qhov system photovoltaic. Cia peb ua hauj lwm ua ke kom ua tiav txoj kev loj hlob ntawm lub zog tauj dua tshiab thiab pab txhawb kom muaj kev tiv thaiv ib puag ncig ntsuab! Thov koj xav tiv tauj peb, peb yuav pab koj tag nrho lub siab dawb paug!
Post lub sij hawm: Oct-15-2024