1. Vim li cas
Vim li cas inverter tshwm sim overvoltage tripping lossis lub zog txo tau tshwm sim?
Nws yuav yog ib qho ntawm cov laj thawj hauv qab no:
1)Koj daim phiaj hauv zos twb ua haujlwm nyob sab nraum lub zos tus qauv voltage txwv (lossis tsis yog cov kev cai tswj kev teeb tsa).Piv txwv li, hauv Australia, raws li 60038 qhia meej 230 volts raws li tus nominal grolt voltage nrog a. + 10%, -6% ntau, yog li ib qho kev txwv sab sauv ntawm 253V. Yog tias qhov no yog qhov no ces koj lub tuam txhab Grid hauv zos muaj lub luag haujlwm los txhim kho qhov hluav taws xob. Feem ntau los ntawm kev kho lub zos hloov pauv.
2)Koj daim ntawv qhia hauv zos tsuas yog nyob rau hauv qhov txwv thiab koj hnub ci, txawm hais tias nruab kom raug thiab tsim kom raug rau cov qauv hauv zos tsuas yog tshaj qhov txwv hauv zos.Koj lub hnub ci inverter cov zis tsoos Terminals tau txuas nrog 'kev sib txuas taw tes' nrog daim phiaj los ntawm cable. Cov cable no muaj cov hluav taws xob tsis kam uas tsim lub voltage thoob plaws rau cable thaum twg lub inverter exports zog los ntawm kev xa hluav taws xob rau hauv kab sib chaws. Peb hu rau qhov no 'voltage nce'. Qhov ntau koj lub hnub ci xa tawm cov hluav taws xob loj dua rau Ohm txoj cai (v = Ir)
Piv txwv li, hauv Australia, Australian txheej txheem 4777.1 hais tias qhov ntau tshaj plaws hluav taws xob nce nyob rau hauv lub hnub ci teeb tsa yuav tsum yog 2% (4.6v).
Yog li koj yuav muaj kev teeb tsa uas ua tau raws li tus qauv no, thiab muaj cov hluav taws xob nce ntawm 4V ntawm cov export puv. Koj daim phiaj hauv koj cheeb tsam kuj tuaj yeem ntsib tus qauv thiab muaj ntawm 252V.
Nyob rau hnub ci zoo thaum tsis muaj ib tus neeg nyob hauv tsev, lub kaw lus export yuav luag txhua yam rau daim phiaj. Cov voltage raug thawb mus txog 252V + 4V = 256V rau ntau dua 10 feeb thiab cov kev ncig ua si.
3)Qhov ntau tshaj plaws nce ntawm koj lub hnub ci inverter thiab daim phiaj yog saum toj t nws 2% tshaj plaws hauv tus qauv,Vim tias cov tsis kam nyob hauv cable (suav nrog lwm qhov sib txuas) yog dhau lawm. Yog tias qhov xwm txheej no ces lub installer yuav tsum tau qhia koj tias koj cov hlua khi rau cov kab sib chaws xav tau txhim kho ua ntej hnub ci yuav ntsia tau.
4) Inverter kho vajtse teeb meem.
Yog tias ntsuas cov kev ntsuas voltage yog ib txwm nyob rau hauv cov kab, tab sis cov inverter ib txwm muaj teeb meem ntau npaum li cas yog, nws yuav yog qhov uas iGbts puas lawm.
2. Kev kuaj mob
Ntsuam xyuas koj cov kev sib tw voltage los kuaj koj cov kev voltage hauv zos, nws yuav tsum ntsuas thaum koj lub hnub ci hluav taws xob tau siv tawm. Txwv tsis pub cov voltage koj ntsuas yuav cuam tshuam los ntawm koj lub hnub ci, thiab koj tsis tuaj yeem tso cov liam ntawm daim phiaj! Koj yuav tsum tau ua pov thawj tias cov grid voltage yog siab tsis muaj koj hnub ci system ua haujlwm. Koj kuj yuav tsum tau tig tag nrho cov khoom loj hauv koj lub tsev.
Nws yuav tsum tau ntsuas ntawm hnub tshav ntuj ib ncig tav su - raws li qhov no yuav coj mus rau hauv tus account voltage sawv los ntawm lwm yam hnub ci nyob ib puag ncig koj.
Ua ntej - Sau cov kev nyeem ntawv nrawm nrog tus multimeter. Koj lub txim taws yuav tsum tau siv hluav taws xob sai nyeem ntawm lub ntsiab hloov. Yog tias qhov hluav taws xob ntau dua li qhov ntsuas hluav taws xob tsawg, tom qab ntawd thaij duab rau ntawm lub chaw ua haujlwm qub) thiab xa mus rau koj lub tuam txhab GARD lub tuam txhab hluav taws xob zoo.
Thib ob - Sau 10 feeb nruab nrab nrog lub log hluav taws xob. Koj lub txim taws xav tau lub log tsheb voltage (piv txwv li fluke vr1710) thiab yuav tsum ntsuas 10 feeb nruab nrab peaks nrog koj lub hnub ci thiab loj thauj mus. Yog hais tias qhov nruab nrab yog saum toj voltage tsawg dua ces xa cov ntaub ntawv kaw tseg thiab daim duab ntawm kev ntsuas kev ntsuas - dua li qhov tseem ceeb uas qhia lub hnub ci hluav taws xob hloov tawm.
Yog hais tias ib qho ntawm cov kev sim siab saum toj no yog 'zoo' ces nyem koj daim phiaj phiaj los kho koj cov qib volfage hauv zos los txhim kho koj cov qib volfage.
Txheeb xyuas qhov hluav taws xob poob qis hauv koj lub teeb tsa
Yog tias cov kev suav sau tau cov hluav taws xob nce ntau dua 2%, koj yuav tsum tau hloov kho AC CABLING ntawm koj cov xov hlau (fatter rires).
Kauj ruam kawg - ntsuas qhov hluav taws xob nce
1. Yog tias koj daim phiaj voltage yog OK thiab lub hluav taws xob nce ntxiv yog tsawg dua 2%, koj lub txim yuav tsum ntsuas cov teeb meem kom paub meej tias cov kev suav hluav taws xob:
2. Nrog PV tawm, thiab tag nrho lwm cov roj teeb hluav taws xob tawm, ntsuas qhov tsis muaj-thauj khoom voltage ntawm lub ntsiab hloov.
3. Thov ib qho paub txog ib qho paub daws EG rhaub lossis qhov cub / nruab nrab thiab ntsuas cov khoom siv hluav taws xob tseem ceeb ntawm lub ntsiab hloov.
4. Los ntawm qhov no koj tuaj yeem suav cov voltage poob / sawv hauv cov neeg tau txais kev pab cuam lub ntsiab thiab kev pabcuam tseem ceeb.
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3. Xaus
Cov kauj ruam tom ntej
Tam sim no koj yuav tsum paub koj qhov teeb meem yog dab tsi.
Yog tias nws yog teeb meem # 1- Daim phiaj voltage dhau lawm- ces yog koj daim phiaj GAC lub tuam txhab qhov teeb meem. Yog tias koj xa tag nrho cov pov thawj Kuv tau xav tias lawv yuav tsum yog yuam kom kho nws.
Yog tias nws yog teeb meem # 2- Daim phiaj yog ok, voltage nce yog tsawg dua 2%, tab sis nws tseem trips ces koj cov kev xaiv yog:
1. Nyob ntawm koj lub tuam txhab GRID uas koj yuav raug tso cai hloov lub inverter 10 feeb nruab nrab voltage mus rau qhov nyiaj tso cai (lossis yog tias koj muaj hmoo heev txawm tias siab dua). Tau txais koj lub txim taws nrog cov tuam txhab sib chaws yog tias koj raug tso cai ua qhov no.
2. Yog tias koj cov inverter muaj "volt / var" hom (feem ntau yog cov ntsiab lus tseem ceeb) - tom qab no tuaj yeem txo cov nyiaj thiab qhov hnyav ntawm ntau dua voltage tripping.
3. Yog tias tsis muaj peev xwm ua tau, yog tias koj muaj 3 qhov kev hloov pauv theem, kho dua tshiab rau qhov teeb meem - raws li cov hluav taws xob nce ntau dua 3 ntu.
4. Txwv tsis pub koj tab tom nrhiav ntawm kev txhim kho koj AC CABLE rau cov kab sib chaws lossis txwv cov hwj chim export ntawm koj lub hnub ci.
Yog tias nws yog teeb meem # 3- Max voltage nce ntau tshaj 2% - ces yog tias nws yog qhov teeb tsa tsis ntev los no nws zoo li koj installer tsis tau nruab lub system rau tus qauv. Koj yuav tsum nrog lawv tham thiab ua haujlwm tawm. Nws yuav feem ntau yuav cuam tshuam txog AC cabling rau daim phiaj (siv cov xov hlau fatter lossis luv luv ntawm cable inverter thiab grid kev sib txuas tau).
Yog tias nws yog teeb meem # 4- Inverter kho teeb meem. Hu rau kev txhawb nqa los muab cov hloov.