Cov tshuab hluav taws xob photovoltaic (PV), uas hloov lub hnub ci rau hauv hluav taws xob, tau dhau los ua lub hauv paus ntawm kev daws teeb meem hluav taws xob ruaj khov. Ib qho tseem ceeb ntawm cov tshuab no yog lub hnub ci cable, siv los txuas cov hnub ci vaj huam sib luag rau lwm cov khoom siv xws li inverters, roj teeb, thiab cov khoom siv hluav taws xob. Cov kab hluav taws xob hnub ci tau tsim tshwj xeeb los tiv thaiv qhov hnyav sab nraum zoov, suav nrog UV hluav taws xob, noo noo, thiab kub siab heev. Txawm li cas los xij, kev txhim kho kom zoo ntawm cov cables no yog qhov tseem ceeb los xyuas kom muaj kev nyab xeeb, kev ua neej ntev, thiab kev ua haujlwm ntawm tag nrho lub hnub ci zog.
Nyob rau hauv tsab xov xwm no, peb yuav tshawb txog qhov tseem ceeb ntawm kev teeb tsa thiab kev ceev faj rau cov hnub ci cables, muab cov lus qhia dav dav rau cov neeg teeb tsa thiab cov kws tshaj lij koom nrog hauv kev xa cov tshuab photovoltaic.
Kev nkag siabHnub ci Cables
Ua ntej delving rau hauv cov kev xav tau thiab kev ceev faj, nws yog ib qho tseem ceeb kom nkag siab tias dab tsi ua rau lub hnub ci cables txawv ntawm cov khoom siv hluav taws xob. Cov kab hluav taws xob hnub ci tau tsim los ua kom tau raws li cov qauv kev ua haujlwm tshwj xeeb uas ua rau muaj kev sib tw ib puag ncig tshwj xeebphotovoltaic systems. Cov cables no raug rau sab nraum zoov, txhais tau tias lawv yuav tsum tau ruaj, UV-resistant, kub-resistant, thiab ya raws.
Ob lub ntsiab ntawm lub hnub ci cables siv nyob rau hauv photovoltaic systems yog:
DC Hnub Ci Cables: Cov no yog siv los nqa cov hluav taws xob ncaj qha (DC) hluav taws xob los ntawm lub hnub ci vaj huam sib luag mus rau lub inverter.
AC Hnub Ci Cables: Cov no yog siv rau alternating tam sim no (AC) hluav taws xob, txuas lub inverter mus rau cov hluav taws xob daim phiaj los yog lwm yam cia li.
Ob hom no feem ntau yog ua los ntawm tooj liab lossis aluminium conductors thiab insulated nrog cov ntaub ntawv xws li cross-linked polyethylene (XLPE), thermoplastic elastomers (TPE), lossis polyvinyl chloride (PVC) los tiv thaiv lawv los ntawm ib puag ncig kev puas tsuaj.
Installation Requirements rau Solar Cables
Kev txhim kho kom raug ntawm cov hluav taws xob hnub ci yog qhov tseem ceeb los xyuas kom meej tias lub tshuab photovoltaic ua haujlwm zoo thiab nyab xeeb. Hauv qab no yog cov kev cai tseem ceeb rau kev txhim kho cov hnub ci cables hauv PV system:
1. Xaiv txoj cai hnub ci Cable
Thawj kauj ruam hauv cov txheej txheem installation yog xaiv qhov tsim nyog hnub ci cable. Qhov no nyob ntawm ntau yam:
Kev ntsuas tam sim no: Lub cable yuav tsum tau ntsuas los tswj qhov siab tshaj plaws tam sim no uas yuav dhau los ntawm nws. Hnub ci cables muaj nyob rau hauv ntau qhov ntau thiab tsawg thiab teeb tsa, nyob ntawm qhov amperage.
Kev ntsuas hluav taws xob: Lub cable kuj yuav tsum tau ntsuas rau qhov siab tshaj plaws voltage hauv qhov system. Rau thaj chaw PV systems, qhov hluav taws xob muaj peev xwm nyob nruab nrab ntawm 600V thiab 1500V, thaum lub tshuab lag luam loj tuaj yeem siv cov kab hluav taws xob ntau dua.
Ib puag ncig Compatibility: Hnub ci cables yuav tsum tsim nyog rau kev teeb tsa ib puag ncig. Piv txwv li, cables siv nyob rau hauv sab nraum zoov ib puag ncig yuav tsum tau UV-resistant thiab weatherproof. Tsis tas li ntawd, cov kab hluav taws xob tau teeb tsa hauv ntug hiav txwv lossis chaw lag luam yuav xav tau kev txhim kho corrosion.
Xyuas kom meej tias lub hnub ci cable koj xaiv tau raws li cov qauv kev lag luam, xws li IEC 60216 rau kev kub siab, IEC 61730 kev nyab xeeb, thiab UL 4703 rau PV xaim.
2. Cable Length thiab Routing
Qhov ntev ntawm cable thiab routing yog qhov tseem ceeb los txo qis zog poob thiab tsis txhob hnav tsis tsim nyog. Nov yog qee cov ntsiab lus los xav txog:
Cable Ntev: Qhov ntev ntawm lub cable yuav tsum yog luv li sai tau kom txo tau lub zog poob vim tsis kam. Txawm li cas los xij, lub cable yuav tsum ntev txaus kom ncav cuag tag nrho cov khoom ntawm lub cev, los ntawm cov hnub ci vaj huam sib luag mus rau lub inverter thiab dhau mus.
Txoj kev: Cov kab hluav taws xob hnub ci yuav tsum raug xa mus kom txo tau qhov kev puas tsuaj rau sab nraud. Cov kab hluav taws xob yuav tsum tau muab tso rau hauv cov kav dej lossis cov tais cable kom tiv thaiv kev puas tsuaj. Yog tias cov kab hluav taws xob tau muab tso rau ntawm lub ru tsev, lawv yuav tsum tau muab khi nrog cov hlua khi kom tsis txhob txav mus los thiab kev puas tsuaj los ntawm cua.
Kev sib cais ntawm AC thiab DC Cables: Nyob rau hauv lub tshuab hluav taws xob photovoltaic, DC cables (los ntawm lub hnub ci vaj huam sib luag) thiab AC cables (los ntawm inverter) yuav tsum tau muab cais. Qhov no tiv thaiv kev cuam tshuam thiab txo qhov kev pheej hmoo ntawm hluav taws xob tsis raug.
3. Kub thiab Environmental Factors
Cov kab hluav taws xob hnub ci tau tsim los tiv thaiv ntau yam kub, tab sis cov xwm txheej huab cua tseem tuaj yeem cuam tshuam rau lawv qhov kev ua tau zoo. Nov yog qee qhov ntsuas kub tseem ceeb:
Qhov kub thiab txias: Cov kab hluav taws xob hnub ci feem ntau raug ntsuas los ua haujlwm nruab nrab ntawm -40 degree thiab +90 degree, tab sis qhov no tuaj yeem sib txawv nyob ntawm hom cable thiab cov khoom siv rau rwb thaiv tsev. Xyuas kom meej tias cov cable xaiv tau ntsuas rau qhov ntsuas kub hauv zos.
Kev tiv thaiv UV: Txij li cov kab hluav taws xob hnub ci raug tshav ntuj, lawv yuav tsum yog UV-tiv thaiv kom tsis txhob degradation ntawm cov rwb thaiv tsev. Qhov no tseem ceeb tshwj xeeb tshaj yog rau cov kab hluav taws xob raug tshav ntuj ncaj qha. Cov kab hluav taws xob siv sab nraum zoov yuav tsum muaj lub plhaub sab nraud ua los ntawm cov khoom siv UV-resistant xws li PVC lossis TPE.
Moisture Resistance: Cov kab hluav taws xob hnub ci yuav tsum tiv taus dej thiab noo noo, tshwj xeeb tshaj yog thaum ntsia hauv qhov chaw sab nraum zoov. Nyob rau hauv cov chaw uas muaj av noo siab, xyuas kom meej tias cov cables raug kaw thiab ya raws-tiv thaiv kom tsis txhob muaj luv luv Circuit Court lossis corrosion.
4. Cable Connectors thiab Junction Boxes
Txhawm rau kom muaj kev nyab xeeb thiab txhim khu kev qha kev sib txuas ntawm cov hnub ci cables, cov khoom sib txuas tsim nyog thiab cov thawv sib txuas yuav tsum tau siv:
Cov khoom sib txuas: Cov connectors siv nrog hnub ci cables yuav tsum tau tsim tshwj xeeb rau siv nyob rau hauv photovoltaic systems. Lawv yuav tsum muaj cov rwb thaiv tsev zoo heev, tiv thaiv corrosion, thiab xyuas kom nruj, ruaj ntseg kev sib txuas los tiv thaiv hluav taws xob tsis zoo.
Junction Boxes: Yog tias cov thawv sib txuas tau siv los txuas ntau lub cables, xyuas kom lawv tsis muaj huab cua thiab ua raws li cov qauv tsim nyog. Cov thawv yuav tsum loj txaus kom haum rau cov cable txuas thiab tso cai rau kev nkag tau yooj yim yog tias xav tau kev saib xyuas.
5. Cable Tais thiab Conduits
Thaum routing hnub ci cables, kev siv cov tais cable thiab cov kav dej yog qhov tseem ceeb los tiv thaiv cov cables los ntawm kev puas tsuaj rau lub cev thiab raug rau cov khoom sab nraud. Conduits yuav tsum tsis txhob muaj huab cua, thiab cov tais cable yuav tsum tau muab tso rau kom ruaj ntseg kom tsis txhob muaj kev sagging lossis txav mus.
Yog hais tias cov cables raug faus rau hauv av, xyuas kom meej tias lawv muab tso rau hauv faus conduit los tiv thaiv lawv los ntawm ya raws thiab kev ntxhov siab. Rau kev teeb tsa lub ru tsev, cov kab hluav taws xob yuav tsum tau khiav raws lub ru tsev ntug lossis hauv lub ru tsev qauv kom txo tau qhov cuam tshuam rau cov khoom.
Installation Precautions rau Solar Cables
Thaum txhim kho cov kab hluav taws xob hnub ci, qee qhov kev ceev faj yuav tsum tau ua kom muaj kev nyab xeeb thiab siv tau ntev ntawm lub cev. Hauv qab no yog qee qhov kev ceev faj tseem ceeb ua raws thaum lub sijhawm teeb tsa:
1. Tsis txhob sib zog khoov thiab nruj
Hnub ci cables yuav tsum tsis txhob khoov ntawm cov kaum ntse ntse, vim qhov no tuaj yeem ua rau cov rwb thaiv tsev puas thiab cuam tshuam rau cov khoom hluav taws xob. Feem ntau muaj qhov tsawg kawg nkaus khoov vojvoog uas tau teev tseg los ntawm cov chaw tsim khoom, thiab nws yuav tsum tau ua raws li nruj me ntsis raws li lub sijhawm teeb tsa. Kev nruj dhau ntawm lub cable yuav tsum raug zam, vim tias nws tuaj yeem ua rau cov neeg siv hluav taws xob ncab lossis tawg, ua rau tsis ua haujlwm lossis muaj teeb meem hluav taws xob.
2. Kev tsim nyog hauv av
Nws yog ib qho tseem ceeb los xyuas kom meej tias lub photovoltaic system yog zoo grounded. Qhov no pab tiv thaiv kev puas tsuaj hluav taws xob thiab ua kom muaj kev nyab xeeb ntawm kev teeb tsa. Grounding lub hnub ci cables thiab tag nrho cov system pab tiv thaiv ob lub cables thiab cov neeg siv los ntawm hluav taws xob surges los yog faults.
3. Zam kev puas tsuaj rau lub cev
Thaum tso cov kab hluav taws xob hnub ci, yuav tsum tau saib xyuas kom tsis txhob muaj kev puas tsuaj rau lub cev, xws li kev txiav, abrasions, lossis tsoo raug mob. Xyuas kom tseeb tias cov cables tsis raug rau cov khoom ntse, cov cuab yeej hnyav, lossis cov tshuab txav uas tuaj yeem ua rau hnav lossis punctures hauv cov rwb thaiv tsev.
4. Tshawb xyuas kev sib raug zoo nrog lwm cov Cheebtsam
Xyuas kom meej tias cov cables siv tau sib xws nrog lwm cov khoom siv hauv lub cev, suav nrog cov inverter, cov khoom sib txuas, thiab cov thawv sib txuas. Cov khoom tsis sib haum tuaj yeem ua rau muaj kev sib txuas tsis zoo, uas tuaj yeem ua rau lub zog poob, hluav taws xob tsis zoo, lossis txawm tias muaj hluav taws kub.
5. Kev tiv thaiv tiv thaiv overheating
Cov kab hluav taws xob hnub ci yog tsim los tswj cov cua sov, tab sis cov cua sov ntau dhau tuaj yeem ua rau degradation, tshwj xeeb tshaj yog tias lawv tau teeb tsa hauv thaj chaw uas muaj cua tsis zoo. Xyuas kom tseeb tias cov cables tsis tau muab tso rau ze ze rau qhov chaw cua sov, xws li cov pa tso pa tawm, lossis hauv qhov chaw kaw tsis muaj cua txaus.
6. Kev tshuaj xyuas thiab kuaj
Thaum lub installation tiav lawm, yuav tsum tau ua tib zoo xyuas thiab kuaj cov cables. Tshawb xyuas cov kev sib txuas, rwb thaiv tsev, thiab kev ua haujlwm rau txhua qhov kev puas tsuaj lossis hnav. Siv cov cuab yeej ntsuas hluav taws xob los xyuas kom meej tias lub kaw lus ua haujlwm raug thiab tsis muaj teeb meem lossis teeb meem tshwm sim.
7. Ua raws li Txoj Cai
Nws yog ib qho tseem ceeb kom ua raws li cov cai hluav taws xob hauv zos thiab cov qauv thaum lub sij hawm teeb tsa. Cov kev cai no feem ntau hais txog yam tsawg kawg nkaus rau cov hom cable, cov khoom siv txuas, cable routing, thiab grounding systems kom muaj kev nyab xeeb thiab kev ua haujlwm.