Lub siab - zoo PV system nyob ntawm tsis tsuas yog nyob rau hauv modules thiab inverters, tab sis kuj nyob rau hauv qis - poob, ruaj khov thiab huab cua- tiv thaiv kis tau tus mob Cheebtsam. Tsis zoo cable sizing, qis- qib rwb thaiv tsev, siab connector tiv thaiv los yog kev teeb tsa tsis zoo tuaj yeem ua rau lub zog poob, overheating, dej ingress, arcing, downtime thiab ntau dua cov nqi kho.
1. Cable zoo txiav txim siab kis tau tus mob thiab kev pab lub neej
Kev xaiv cable yuav tsum tsom rau cov khoom siv hluav taws xob, kev tiv thaiv, ntsuas kub, kev ua haujlwm rwb thaiv tsev, UV tiv thaiv thiab kev hloov pauv ib puag ncig. Kev tiv thaiv qis dua txo cov kab poob, thaum lub rwb thaiv tsev ruaj khov tiv thaiv lub cev los ntawm kev laus, tawg thiab tawg tam sim no.
| Parameter | High -Quality Copper Cable | Standard tooj liab Cable | Aluminium Alloy Cable | Engineering Impact |
|---|---|---|---|---|
| Kev coj ua | kwv yees . 63 MS/m | kwv yees . 58 MS/m | kwv yees . 36-38 MS/m | Cov conductivity siab dua txo cov kab poob |
| Resistivity ntawm 20 degree | kwv yees . 0.0167 Ω·mm²/m | kwv yees . 0.0185 Ω·mm²/m | kwv yees . 0.028-0.032 Ω·mm²/m | Aluminium alloy yuav tsum muaj tus ntoo khaub lig loj dua -section |
| Kub coefficient | kwv yees . 0.00385/degree | kwv yees . 0.00403/degree | kwv yees . 0.00422/degree | Kev tiv thaiv nce thaum kub nce |
| Qhov ntom | kwv yees . 8.89 g/cm³ | kwv yees . 8.89 g/cm³ | kwv yees . 3.63 g/cm³ | Aluminium alloy yog ntau sib dua |
| Yam khoom zoo | Kev poob qis | Mature daws | Txo qhov hnyav thiab tus nqi | Kev xaiv nyob ntawm qhov deb, tam sim no thiab qhov chaw nyob |
Rau qhov ntev - kis tau tus mob, cable kuj tseem ceeb tshwj xeeb. Nyob rau hauv siab - qhov kub thiab txias ib puag ncig, kuj nce ntxiv, uas tuaj yeem txo qhov kev ua haujlwm ntawm lub cev. Nyob rau hauv qhov hnyav sab nraum zoov xws li cov suab puam, cov ntug hiav txwv dej thiab qhov siab - qhov chaw siab, cable sheath thiab rwb thaiv tsev zoo kuj txiav txim siab seb lub kaw lus puas tuaj yeem nyob ruaj khov rau ntau xyoo ntawm kev ua haujlwm.
2. Connector Quality cuam tshuam rau kev nyab xeeb ntau ncaj qha
Cov khoom sib txuas yog ib qho tsis ua haujlwm tshaj plaws - cov ntsiab lus tseem ceeb hauv PV systems. Lawv cov kev tiv thaiv kev tiv thaiv, kev ntsuas dej tsis zoo, cov qauv xauv thiab cov khoom sib xws ncaj qha cuam tshuam rau kev tsim hluav taws xob thiab kev pheej hmoo tsis ua haujlwm.
| Hom Connector | Hom Kev Tiv Thaiv Kev Tiv Thaiv | Kev tiv thaiv ntsuas | Tam sim no -Kev muaj peev xwm nqa tau | Kev siv tsim nyog |
|---|---|---|---|---|
| Txheem MC4 | 0.25-0.35 mΩ | IP67 | Nruab nrab | Me thiab nruab nrab PV systems |
| MC4-EVO2 | kwv yees . 0.2 mΩ | IP67 | Siab, haum rau 1500V systems | High - fais fab PV systems |
| T4 Connector | Tsawg dua lossis sib npaug li 0.25 mΩ | IP68 | Kwv tij siab | Kev siv hluav taws xob- nplai thiab ib puag ncig hnyav |
| Basic tooj liab-aluminium connector | Tsawg dua los yog sib npaug li 0.5 mΩ | IP68 | Nruab nrab | Ib puag ncig tshwj xeeb, nyob ntawm tus qauv tsim |
Kev tiv thaiv kev tiv thaiv siab dua txhais tau tias muaj cua sov ntau dua thiab lub zog poob ntau dua. Piv txwv li, nyob rau hauv 100A tam sim no, txhua 1 mΩ ntawm kev tiv thaiv kev tiv thaiv tuaj yeem tsim txog 10W ntawm cov cua sov poob ntawm ib qho kev sib txuas. Hauv cov nroj tsuag PV loj nrog ntau txhiab cov ntsiab lus sib txuas, qhov no tuaj yeem dhau los ua qhov teeb meem loj thiab kev nyab xeeb.
Kev sib txuas tsis zoo yog lwm qhov kev pheej hmoo. Kev sib xyaw cov khoom sib txuas los ntawm cov npe sib txawv tuaj yeem ua rau muaj kev tsis sib haum xeeb, kev sib cuag tsis ruaj khov, dej ingress lossis arcing. Cov ntawv pov thawj thiab sib xws yuav tsum tau siv los ua ib qho kev ua tiav.
3. Kev xaiv tsis zoo ua rau muaj zog poob thiab O&M nqi
Cov ntaub ntawv hais txog ntau qhov project- theem cuam tshuam:
| Qhov teeb meem | Direct Result | Ntev - Kev cuam tshuam rau lub sijhawm |
|---|---|---|
| High cable kuj | Siab dua DC kab poob | Tsawg zog txhua xyoo tawm los |
| Tsis zoo rwb thaiv tsev los yog sheath aging | Cracking, to los yog luv luv Circuit Court txaus ntshai | Nquag hloov thiab downtime |
| High connector tiv taus | Hauv zos overheating | Kev poob hauj lwm thiab hluav taws kub |
| Kev ntsuas dej tsis zoo | Dej thiab hmoov av ingress | Corrosion, kev sib cuag tsis zoo thiab tsis ua haujlwm |
| Tsis tsim nyog crimping los yog installation | Loose kev twb kev txuas | Arc txhaum thiab kev ua haujlwm tsis ruaj khov |
| Tsis quav ntsej qhov chaw ib puag ncig | Cov khoom laus sai dua li qhov xav tau | Tus nqi tu lub neej siab dua |
Los ntawm lub neej- voj voog txoj kev xav, qis- cov khoom siv tus nqi yuav txuag tau 5-10% hauv kev yuav khoom thawj zaug, tab sis lawv tuaj yeem tsim kev poob ntau dua tom qab 2-3 xyoo ua haujlwm. Cov kab hluav taws xob zoo thiab cov khoom sib txuas kom txo tau lub zog poob, txhim kho kev muaj peev xwm thiab txo qis txij nkawm ntau dua li ntawm 25 xyoo kev ua haujlwm.
4. Kev xaiv yuav tsum phim qhov project ib puag ncig
| Qhov project Scenario | Cable xaiv tsom | Connector Xaiv tsom |
|---|---|---|
| Siab siab | Kev nyab xeeb loj dua, muaj zog rwb thaiv tsev, qis - qhov kub thiab txias | IP68, dav kub ntau, ruaj khov tiv thaiv |
| Ntug hiav txwv / ntsev- thaj chaw tshuaj tsuag | Tinned tooj liab lossis corrosion-resistant conductor | Ntsev-txhaj tshuaj tiv thaiv, muaj zog sealing, corrosion- tiv taus terminals |
| Suab puam / kub kub | Siab -kub sheath, UV tiv taus, tsim nyog derating | Tsis tshua muaj kev tiv thaiv, kev ntsuas kub siab |
| Luv-nruab deb / siab-precision system | Tsawg-kwv tooj liab cable | Certified connector nrog txhim khu kev qha crimping |
| Cov khoom siv loj- nplai cog | Optimized cross-section thiab life-cycle cost | Siab-tam sim no, qis-kuj, ntawv pov thawj connector system |
5. Kev coj ua zoo tshaj plaws rau PV Engineering
Siv cov kab ntawv pov thawj thiab cov khoom sib txuas uas ua tau raws li cov qauv tsim xws li CQC, TÜV, UL, IEC lossis qhov project- cov cai tshwj xeeb.
Tsis txhob sib xyaw cov khoom sib txuas los ntawm cov tuam txhab sib txawv tshwj tsis yog tias kev sib raug zoo tau raug txheeb xyuas kom meej.
Xaiv cable loj raws li tam sim no, voltage poob, kub, tso txoj kev thiab qhov project nrug.
Siv cov cuab yeej crimping kws tshaj lij pom zoo los ntawm cov chaw tsim khoom txuas.
Khaws lub vojvoog uas yuav tsum tau khoov thaum lub sijhawm teeb tsa kom tsis txhob muaj tus neeg xyuas pib lossis kev puas tsuaj.
Tsis txhob disconnect DC connectors nyob rau hauv load, vim qhov no yuav ua rau arcing.
Tshawb xyuas cov connectors thiab cables tsis tu ncua kom loosening, cracking, discoloration, overheating los yog dej ingress.
Xaus
Kev xaiv cable thiab txuas yog qhov kev txiav txim siab tsim me me nrog kev cuam tshuam loj hauv engineering. High-zoo, zoo sib xws thiab txhim kho cov khoom kom raug pab txo qis hluav taws xob, tiv thaiv overheating, txhim kho kev ntseeg siab thiab txo qis dua - lub sij hawm O&M nqi. Rau PV tej yaam num, txhim khu kev qha kev twb kev txuas tsis yog ib tug nthuav dav. Nws yog lub hauv paus ntawm kev nyab xeeb, ruaj khov thiab muaj zog tsim hluav taws xob.