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Qhov tseem ceeb thiab txoj kev xaiv txoj cai photovoltaic DC hloov

Qhov tseem ceeb thiab txoj kev xaiv txoj cai photovoltaic DC hloov

Qhov zoo ntawm photovoltaic DC keyboards tau ua rau ntau lub tuam txhab Australian hnub ci kaw lawv lub qhov rooj

Ntau thiab ntau lub tuam txhab Australian hnub ci tau kaw lawv lub qhov rooj vim tsis tsim nyog OEM PV DC keyboards.Yuav luag tag nrho Australian distributors xaiv muag pheej yig DC hloov pauv los ntawm OEM.

Ua ntej, nws yooj yim dua rau OEM cov keyboards.Tsuas yog lub npe khoom lag luam thiab ntim khoom raug hloov pauv, thiab thawj lub Hoobkas yooj yim rau kev koom tes.

Qhov thib ob, cov chaw tsim khoom qub no feem ntau yog kev cob qhia me me thiab tsis muaj dab tsi.Hom kev paub, me me, thiab txaus siab koom tes.Cov neeg xa khoom tuaj yeem nce tus nqi ntxiv ntawm pheej yig DC keyboards los ntawm kev sau npe hauv zos Australian hom rau kev muag khoom.Cov neeg muag khoom yuav tsum xav tias tag nrho cov kev pab cuam tom qab muag zoo rau cov khoom OEM thiab ua txhua lub luag haujlwm rau cov teeb meem khoom.

Nyob rau hauv txoj kev no, ib zaug cov khoom muaj teeb meem zoo, cov tswv lag luam yuav muaj kev pheej hmoo siab dua thiab cuam tshuam rau lawv tus kheej lub hom phiaj.Qhov no kuj yog qhov laj thawj tseem ceeb rau kev lag luam ntawm cov tuam txhab no.

Cov teeb meem tseem ceeb ntawm cov keyboards DC no yog:

1. Lub siab tsis kam ntawm kev sib cuag ua rau overheating thiab txawm tias hluav taws kub;
2. Lub tshuab hluav taws xob tsis tuaj yeem muab tua ib txwm, thiab tus tes hloov pauv tseem nyob hauv lub xeev 'OFF';
3. Tsis txhob txiav tawm tag nrho, ua rau lub txim taws;
4. Vim tias qhov kev tso cai ua haujlwm tam sim no me dhau, nws yooj yim ua rau overheating, kev puas tsuaj rau qhov hloov pauv cuam tshuam lossis txawm tias cov duab deformation.

Lub tuam txhab Queensland tau muag DC hloov pauv uas tau sim rau qhov muaj peev xwm muaj kev nyab xeeb thiab ua rau tsawg kawg 70 qhov hluav taws kub ntawm lub hnub ci ntawm lub ru tsev ntawm cov neeg siv.Tsis tas li ntawd, muaj kaum tawm txhiab tus tswv tsev uas muaj kev pheej hmoo ntawm hluav taws xob hluav taws xob txhawj xeeb.

Advancetech, headquartered nyob rau hauv Sunshine ntug dej hiav txwv, yog ib tug ntev-tsim lub tuam txhab uas nws motto yog "sim, sim, believable".Thaum Lub Tsib Hlis 12, 2014, Queensland Tus Kws Lij Choj General Jarrod Bleijie tau xaj kom rov qab tam sim ntawm 27,600 hnub ci DC hloov pauv tau tuaj thiab muag los ntawm Advancetech.Lub photovoltaic DC hloov pauv tau hloov npe "Avanco" thaum tuaj txawv teb chaws.Thaum lub Tsib Hlis 16, 2014, Advancetech tau mus rau hauv kev lag luam lag luam, thiab txhua tus neeg tsim khoom thiab cov neeg muag khoom thib ob yuav tsum tau them cov nqi thiab kev pheej hmoo ntawm kev hloov cov khoom tsis raug.

Qhov no qhia tau hais tias tus yuam sij tsis yog yam koj yuav tab sis leej twg koj yuav los ntawm thiab nws cov kev pheej hmoo.Cov ntaub ntawv ntsig txog tuaj yeem nrhiav tau ntawm http://www.recalls.gov.au/content/index.phtml/itemId/1059088.

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Daim duab 1: AVANCO hom photovoltaic DC hloov rov qab daim ntawv ceeb toom

Tsis tas li ntawd, cov khoom lag luam rov qab los hauv Australia kuj suav nrog:

Lub DC hloov ntawm GWR PTY LTD Kev Lag Luam raws li Uniquip Industries tau rov qab los vim muaj cua sov thiab hluav taws kub: http://www.recalls.gov.au/content/index.phtml/itemId/1060436

NHP Hluav Taws Xob Engineering Khoom Pty Ltd's DC hloov, vim li cas rau qhov rov qab yog tias thaum tus kov hloov mus rau 'OFF' lub xeev, tab sis kev sib cuag yog ib txwm nyob rau hauv 'ON' lub xeev, thiab qhov hloov pauv tsis tuaj yeem muab tua: http: //www.recalls.gov.au/ content/index.phtml/itemId/1055934

Tam sim no, muaj ntau lub npe hu ua DC Circuit Court breakers ntawm kev ua lag luam uas tsis yog DC Circuit Court breakers tiag tiag, tab sis tau txhim kho los ntawm AC Circuit Court breakers.Cov tshuab photovoltaic feem ntau muaj qhov cuam tshuam loj heev thiab tam sim no.Nyob rau hauv cov ntaub ntawv ntawm ib qho txhaum cai hauv av, lub siab luv luv tam sim no yuav rub cov neeg sib cuag ua ke, ua rau muaj qhov luv luv-circuit tam sim no, uas tuaj yeem siab txog li kiloamps (nyob ntawm cov khoom sib txawv).Tshwj xeeb tshaj yog nyob rau hauv cov tshuab photovoltaic, nws yog ib qho uas muaj ntau yam kev sib txuas lus ntawm cov hnub ci vaj huam sib luag lossis cov tswv yim ywj pheej ntawm ntau lub hnub ci vaj huam sib luag.Nyob rau hauv txoj kev no, nws yog ib qho tsim nyog yuav tau txiav tawm qhov sib npaug DC cov tswv yim ntawm ntau lub hnub ci vaj huam sib luag lossis DC cov tswv yim ywj pheej ntawm ntau lub hnub ci vaj huam sib luag tib lub sijhawm.Lub arc extinguishing peev xwm ntawm DC keyboards nyob rau hauv cov xwm txheej Cov kev xav tau yuav siab dua, thiab kev siv cov kev txhim kho DC Circuit Court breakers hauv cov tshuab photovoltaic yuav muaj kev pheej hmoo loj.

Kev xaiv kom raug ntawm ntau tus qauv rau DC keyboards

Yuav ua li cas xaiv txoj cai DC hloov rau lub photovoltaic system?Cov qauv hauv qab no tuaj yeem siv raws li kev siv:

1. Sim xaiv cov khoom lag luam loj, tshwj xeeb tshaj yog cov uas tau dhau daim ntawv pov thawj thoob ntiaj teb.

Photovoltaic DC Circuit Court breakers feem ntau muaj daim ntawv pov thawj European IEC 60947-3 (Tebchaws Europe cov qauv, ua raws li ntau lub tebchaws hauv Asia-Pacific), UL 508 (American general standard), UL508i (American standard for DC switches for photovoltaic systems), GB14048.3 (domestic general Standard), CAN/CSA-C22.2 (Canadian General Standard), VDE 0660. Tam sim no, loj thoob ntiaj teb hom muaj tag nrho cov saum toj no ntawv pov thawj, xws li IMO nyob rau hauv lub tebchaws United Kingdom thiab SANTON nyob rau hauv lub Netherlands.Feem ntau cov khoom lag luam hauv tebchaws tam sim no tsuas yog dhau tus qauv thoob ntiaj teb IEC 60947-3.

2. Xaiv lub DC Circuit Court breaker nrog zoo arc extinguishing muaj nuj nqi.

Lub arc extinguishing nyhuv yog ib qho tseem ceeb tshaj plaws qhia rau kev ntsuam xyuas DC keyboards.Tiag tiag DC Circuit Court breakers muaj tshwj xeeb arc extinguishing pab kiag li lawm, uas yuav tsum tau switched tawm ntawm load.Feem ntau, cov qauv tsim ntawm DC Circuit Court breaker tiag tiag yog qhov tshwj xeeb heev.Tus kov thiab kev sib cuag tsis tau ncaj qha mus txuas, yog li thaum lub qhov hluav taws xob qhib thiab tawm, qhov kev sib cuag tsis ncaj qha tig mus rau disconnect, tab sis lub caij nplooj ntoos hlav tshwj xeeb yog siv rau kev sib txuas.Thaum tus kov tig los yog txav mus rau ntawm ib qho chaw tshwj xeeb, txhua qhov kev sib cuag tau tshwm sim rau "dab tsi qhib", yog li tsim qhov kev txiav txim siab ceev heev, ua rau lub arc ntev kuj luv.Feem ntau, lub arc ntawm photovoltaic DC hloov ntawm lub thoob ntiaj teb thawj-kab hom yog extinguished nyob rau hauv ob peb milliseconds.Piv txwv li, SI system ntawm IMO thov tias cov arc raug tua tsis pub dhau 5 milliseconds.Txawm li cas los xij, lub arc ntawm DC Circuit Court breaker hloov kho los ntawm AC Circuit Court breaker feem ntau kav ntev tshaj 100 milliseconds.

3. Tiv thaiv qhov hluav taws xob siab thiab tam sim no.

Qhov hluav taws xob ntawm lub tshuab hluav taws xob photovoltaic tuaj yeem ncav cuag 1000V (600V hauv Tebchaws Meskas), thiab qhov tam sim no uas yuav tsum tau txiav yog nyob ntawm lub hom thiab lub zog ntawm lub module, thiab seb lub photovoltaic system puas txuas nrog rau kev sib txuas lossis ntau qhov kev sib txuas ywj pheej ( multi-channel MPPT).Qhov hluav taws xob thiab tam sim no ntawm DC hloov yog txiav txim siab los ntawm txoj hlua hluav taws xob thiab qhov sib npaug tam sim no ntawm photovoltaic array uas yuav tsum tau txiav tawm.Xa mus rau cov kev paub hauv qab no thaum xaiv photovoltaic DC Circuit Court breakers:

Voltage = NS x VOC x 1.15 (Equation 1.1)

Tam sim no = NP x ISC x 1.25 (Formula 1.2)

Qhov twg NS-tus naj npawb ntawm cov roj teeb vaj huam sib luag hauv series NP-cov naj npawb ntawm cov roj teeb pob nyob rau hauv parallel

VOC-roj teeb vaj huam sib luag qhib qhov hluav taws xob voltage

ISC-short circuit tam sim no ntawm lub roj teeb vaj huam sib luag

1.15 thiab 1.25 yog empirical coefficients

Feem ntau, DC keyboards ntawm cov hom loj tuaj yeem cuam tshuam qhov system DC voltage ntawm 1000V, thiab txawm tsim los txiav tawm DC input ntawm 1500V.Cov hom loj ntawm DC keyboards feem ntau muaj lub zog loj.Piv txwv li, ABB's photovoltaic DC keyboards muaj ntau pua ampere series khoom.IMO tsom rau DC hloov pauv rau cov tshuab hluav taws xob xa hluav taws xob thiab tuaj yeem muab 50A, 1500V DC keyboards.Txawm li cas los xij, qee qhov chaw tsim khoom me me feem ntau tsuas yog muab 16A, 25A DC hloov pauv, thiab nws cov cuab yeej siv thiab thev naus laus zis nyuaj los tsim cov hluav taws xob photovoltaic DC keyboards siab.

4. Cov qauv khoom tiav.

Feem ntau, cov hom loj ntawm DC keyboards muaj ntau yam qauv uas tuaj yeem ua tau raws li qhov xav tau ntawm ntau lub sijhawm.Muaj cov khoom siv sab nraud, ua-nyob rau hauv, cov terminals uas tuaj yeem ua tau raws li MPPT cov khoom siv hauv cov khoom sib txuas thiab sib txuas, nrog thiab tsis muaj qhov xauv, thiab txaus siab dua.Ntau yam kev teeb tsa Txoj hauv kev xws li lub hauv paus kev teeb tsa (nruab rau hauv lub thawv sib txuas thiab lub hwj chim faib txee), ib lub qhov thiab kev teeb tsa vaj huam sib luag, thiab lwm yam.

5. Cov khoom siv yog nplaim hluav taws thiab muaj kev tiv thaiv siab.

Feem ntau, cov vaj tse, cov khoom siv lub cev, lossis kev tuav ntawm DC keyboards yog txhua yam yas, uas muaj nws tus kheej cov yam ntxwv ntawm cov nplaim hluav taws thiab feem ntau tuaj yeem ua tau raws li UL94 tus qauv.Lub casing los yog lub cev ntawm qhov zoo-zoo DC hloov tuaj yeem ua tau raws li UL 94V0 tus qauv, thiab tus kov feem ntau ua tau raws li UL94 V-2 tus qauv.

Thib ob, rau qhov hloov pauv DC built-in hauv lub inverter, yog tias muaj lwm tus kov uas tuaj yeem hloov tau, kev tiv thaiv qib ntawm kev hloov feem ntau yuav tsum tau ua kom tau raws li qhov yuav tsum tau ua ntawm kev tiv thaiv qib ntawm tag nrho lub tshuab.Tam sim no, feem ntau siv hlua inverters hauv kev lag luam (feem ntau tsawg dua 30kW lub zog hluav taws xob) feem ntau ua tau raws li IP65 tiv thaiv qib ntawm tag nrho lub tshuab, uas yuav tsum tau hloov DC built-in thiab nruj ntawm lub vaj huam sib luag thaum lub tshuab raug teeb tsa. .Rau cov keyboards DC sab nraud, yog tias lawv tau teeb tsa sab nraum zoov, lawv yuav tsum ua kom tau raws li qib IP65 tiv thaiv tsawg kawg.

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Daim duab 2: Ib qho kev hloov DC sab nraud rau kev ua thiab rhuav ntau txoj hlua ntawm cov roj teeb ywj pheej

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Daim duab 3: Ib qho kev hloov DC sab nraud uas tig rau thiab tawm ib txoj hlua ntawm cov roj teeb


Post lub sij hawm: Oct-17-2021

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