Xaiv txoj cai PV fuse yog tus yuam sij kom muaj kev nyab xeeb, kev ntseeg tau thiab kev ua haujlwm ntawm PV system. Qhov loj me fuses tiv thaiv lub hnub ci vaj huam sib luag, cov thawv sib txuas, cov khoom siv hluav taws xob thiab lwm yam khoom siv hluav taws xob los ntawm cov xwm txheej dhau los uas tuaj yeem ua rau cov khoom puas, lub sijhawm poob lossis txawm tias hluav taws kub.
Muaj ntau yam kev ntsuas hluav taws xob, qib tam sim no thiab hom fuse, thiab nkag siab txog cov txheej txheem xaiv tseem ceeb tuaj yeem pab koj xaiv lub hnub ci PV fuse uas haum rau koj daim ntawv thov.
1.Kev nkag siab txog kev siv lub hnub ci PV Fuse
Hnub ci PV fuse yog tsim los cuam tshuam cov tam sim no ntau dhau los ntawm:
Luv luv
Rov qab tam sim no
Hauv av tawg
Cov cuab yeej ua tsis tiav
Tsis zoo li cov qauv hloov pauv tam sim no, cov fuses photovoltaic tshwj xeeb yog tsim los tiv thaiv kev nyab xeeb siab -voltage DC tam sim no muaj nyob rau hauv lub hnub ci fais fab.
2.Kev txiav txim siab qhov System Voltage
Ib qho ntawm thawj yam yuav tsum xav txog yog qhov siab tshaj plaws ntawm qhov system.
Feem ntau hnub ci fuse ntsuas voltages suav nrog:
600V DC fais fab mov
1000V DC fais fab mov
1500V DC fais fab mov
Lub fuse rated voltage yuav tsum sib npaug los yog siab tshaj qhov siab tshaj plaws qhib Circuit Court voltage (Voc) ntawm PV system.
Piv txwv li:
Yog tias koj lub hnub ci vaj huam sib luag ua haujlwm ntawm 1200V DC, xaiv 1500V DC PV fuse.
Kev siv lub fuse nrog qhov ntsuas hluav taws xob tsis txaus tuaj yeem ua rau muaj kev phom sij loj.
3.Xaiv qhov yuav tsum tau fuse tam sim no ntsuas
Lub fuse ntsuas tam sim no yuav tsum raug xaiv raws li luv luv -circuit circuit tam sim no ntawm lub hnub ci vaj huam sib luag.
Ib qho kev coj ua hauv kev lag luam yog:
Fuse Rating=1.25 × 1.25 × Isc
Thawj 125% yog rau kev ua haujlwm tas mus li thiab qhov thib ob 125% muab kev tiv thaiv ntxiv raws li cov qauv hluav taws xob.
Piv txwv li:
Yog tias:
Module Isc=12A
Tom qab ntawd:
Luas=12 x 1.25 x 1.25=18.7512\\times 1.25=18.7512 × 1.25=18.75
Tus qauv 20A hnub ci PV fuse feem ntau xaiv.
Ib txwm txheeb xyuas qhov xav tau ntawm qhov loj me raws li cov lej hluav taws xob hauv zos thiab cov chaw tsim khoom pom zoo.
4. a gPV Rated Fuse
Rau cov tshuab photovoltaic, nws yog ib qho tseem ceeb uas yuav tau siv cov fuses tshwj xeeb uas tsim los rau kev siv hnub ci.
Nrhiav:
gPV Fuses
gPV fuses tshwj xeeb tsim los rau:
Kev tiv thaiv ntawm PV cables;
Interrupt low fault currents
Kev ua haujlwm ntawm kev ua haujlwm DC txuas ntxiv
Kev nyab xeeb ua haujlwm ntawm high voltage
Cov qauv kev lag luam fuses yuav tsis muab kev tiv thaiv txaus hauv cov tshuab photovoltaic.
5. Xav txog qhov chaw teeb tsa
Txoj hauj lwm ntawm lub fuse cuam tshuam rau hom thiab qhov loj me.
Cov ntsiab lus installation feem ntau suav nrog:
PV Combiner Boxes
Tiv thaiv ib tus neeg solar cell hlua los ntawm backcurrents.
Inverter input
Tiv thaiv lub inverter los ntawm overcurrent tej yam kev mob.
Battery Energy Storage Systems
Tiv thaiv cov roj teeb hluav taws xob thiab kev sib txuas DC.
DC Distribution Panels
ceg tiv thaiv kab mob.
Txhua daim ntawv thov yuav xav tau qhov sib txawv fuse kev ntsuas thiab kev teeb tsa fuse tuav.
