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2026-08-19 IB
Direct teb:Kev cai uninterruptible fais fab mov RFQ yuav tsum khov lub sij hawm load, yuav tsum tau kW thiab kVA, input thiab output voltage, zaus, theem thiab nruab nrab kev npaj, bypass qhov chaw, roj teeb autonomy, ib puag ncig tej yam kev mob, kev sib txuas lus, kev tiv thaiv, installation txwv, kos duab, thiab txais kev xeem. Cov neeg yuav khoom yuav tsum txhais cov kev ua haujlwm sab nraud thiab kev sib tshuam, thaum tus neeg muag khoom xa rov qab cov qauv tsim, suav, sib txawv, thiab cov ntaub ntawv tsim khoom.
Customization tuaj yeem xa mus rau cov kev ntsuas, txee layout, kev tawm tswv yim thiab kev teeb tsa, kev teeb tsa roj teeb, kev tiv thaiv, kev sib txuas lus, kev saib xyuas, cable nkag, xim, cov ntawv lo, cov ntaub ntawv, lossis kev sim ntawm lub Hoobkas. Nws yuav tsum tsis txhob nyob twj ywm ib qho lus cog tseg. Txhua qhov kev thov hloov pauv yuav tsum muaj qhov ntsuas tau, tus tswv, thiab cov pov thawj lees paub.
Lub hom phiaj industrial-frequency online peb-theem UPS yog teev rau 10-600kVA, nrog peb-theem input thiab peb-theem tso zis. Qhov ntau yam no qhia txog tsev neeg cov khoom, tsis yog qhov kev teeb tsa zaum kawg. RFQ tseem yuav tsum tsim kom muaj qhov kev ntsuam xyuas xaiv, qhov tseeb load, voltage system, roj teeb lub luag hauj lwm, bypass, ib puag ncig, interfaces, thiab installation ciam teb.
Cov neeg yuav khoom yuav tsum cais peb cov ntaub ntawv. Cov kev cai ntawm tus tswv hauj lwm txhais cov lag luam thiab qhov chaw xav tau. Lub tswv yim ntawm tus neeg muag khoom qhia txog cov qauv tsim thiab kev sib txawv. Cov ntaub ntawv pom zoo-rau-tsim cov ntaub ntawv khov dab tsi yuav tsim. Tsis meej pem cov theem no ua rau muaj kev tsis sib haum xeeb thaum cov duab kos duab thaum ntxov tau raug kho raws li qhov kev tsim khoom kawg.
Sau txhua qhov kev tiv thaiv load nrog kom muaj nuj nqis, kev khiav hauj lwm watts, lub zog pom tseeb uas muaj, lub zog muaj peev xwm, theem faib, pib lossis inrush tus cwj pwm, cov yam ntxwv tsis zoo, lub voj voog ua haujlwm, thiab kev thuam. Kos cov loads uas ua haujlwm ib txhij thiab cov loads uas yuav raug tso tawm. Lub xeev tam sim no load thiab npaj nthuav dav nyias.
Ib qho kev cai UPS yuav tsum tsis txhob raug xaiv los ntawm cov lej ntawm cov khoom siv npe kVA ib leeg. Nameplates yuav overstate ib txwm xav tau, thaum lub cev muaj zog pib, transformers, imaging khoom, drives, los yog rectifier loads yuav qhia luv luv lub sij hawm peaks thiab harmonic. Nug tus neeg muag khoom kom pom tias qhov kev ntsuas xaiv tau nyob li cas nyob rau hauv lub xeev ruaj khov, kev xav tau ib ntus, overload, thiab yav tom ntej margin.
Txhais qhov qauv tsim raws li qhov kev txiav txim siab qhov project. Kev siv ntau dhau tuaj yeem ua rau tus nqi peev, hneev taw, roj teeb kom muaj nuj nqis, thiab kev ua haujlwm qis. Cov npoo tsis txaus tuaj yeem txwv kev nthuav dav lossis tsim kev hloov pauv ntau dhau. Qhov kev thov yuav tsum qhia ob qho tib si kev khiav hauj lwm kW thiab kVA, qhov kev xav tau ntawm cov khoom siv hluav taws xob, thiab qhov feem pua ntawm cov khoom thauj tam sim no thiab yav tom ntej.
Lub xeev nominal input voltage thiab zaus, tso cai variation, theem sib lawv liag, nruab nrab thiab tiv thaiv-lub ntiaj teb kev npaj, upstream transformer cov ntaub ntawv, muaj txhaum theem, upstream tiv thaiv ntaus ntawv, thiab cable nkag. Yog tias lub tshuab hluav taws xob muab UPS, muab lub tshuab hluav taws xob ntsuas hluav taws xob, kev tswj hluav taws xob, kev coj tus cwj pwm zaus, ramp lossis kev thauj khoom ib ntus, thiab lwm yam khoom loj sib koom ua ke.
Lub bypass qhov chaw yuav tsum muaj kev sib npaug. Qhia kom meej seb lub rectifier thiab bypass siv ib qho chaw los yog sib cais, seb qhov nruab nrab puas muaj, qhov kev lees paub bypass voltage thiab zaus qhov rais, thiab tus cwj pwm yuav tsum tau thaum bypass yog sab nraud txwv. Txheeb xyuas seb qhov kev saib xyuas sab nraud puas yog nyob rau hauv tus neeg muag khoom lub peev xwm thiab yuav ua li cas kev sib cais yuav ua tiav.
Tsis txhob luam tawm cov nqi hluav taws xob los ntawm kev siv tus qauv tsim yam tsis tau kuaj xyuas qhov chaw. Peb-theem UPS cov khoom lag luam los ntawm cov tuam txhab sib txawv siv cov qhov rais sib txawv ntawm qhov sib txawv, kev sib txuas, kev sib kis, kev muaj peev xwm luv luv, thiab cov xwm txheej overload. Tus neeg sib tw yuav tsum xa rov qab cov ntaub ntawv tshwj xeeb rau cov kev teeb tsa uas tau hais tseg es tsis yog lub rooj sib tham hauv kev lag luam.
Txhais lub nominal tso zis voltage thiab zaus, theem thiab nruab nrab kev npaj, voltage kev cai cia siab, tso cai waveform distortion rau cov teev load hom, zaus tus cwj pwm, overload lub luag hauj lwm, thiab hloov tus cwj pwm. Qhia seb puas yog kev sib cais ntawm galvanic, ib qho khoom siv hluav taws xob, lossis kev npaj av tshwj xeeb yog xav tau los ntawm qhov chaw tsim. Tsis txhob xav tias "kev lag luam zaus" ib leeg teb cov lus nug.
Kev sib koom ua ke luv luv thiab kev tiv thaiv yuav tsum raug kho raws li qhov teeb meem ntawm qhov system. Muab cov ntaub ntawv pov tseg hauv qab los yog fuse thiab lub hom phiaj tshem tawm qhov txhaum. Nug tus neeg muag khoom rau UPS tso tawm tus cwj pwm tsis zoo thiab cov ntaub ntawv sib koom ua ke xav tau los ntawm tus tsim hluav taws xob. Lub UPS tuaj yeem txwv qhov tam sim no txawv ntawm qhov chaw hloov pauv, yog li kev tiv thaiv qis qis yuav tsum tsis txhob xaiv los ntawm ib txwm tam sim no.
Rau cov khoom thauj uas tsis tuaj yeem ua rau muaj kev cuam tshuam, txhais tus cwj pwm tso cai thaum lub sijhawm inverter overload, kev ua txhaum sab hauv, hla kev hloov tsheb, roj teeb depletion, hluav taws xob thaum muaj xwm ceev, thiab kev saib xyuas. Lub sijhawm ua rau-thiab-tshuaj yuav tsum qhia tias lub tswb twg ceeb toom tus neeg teb xov tooj ua ntej kaw thiab cov xwm txheej twg pib hloov pauv tsis siv neeg.
Qhia lub sijhawm ua haujlwm uas yuav tsum tau ua ntawm lub nra hnyav, qhov kawg, qhov kub thiab txias, thiab lub hnub nyoog roj teeb lossis cov qauv tsim. Qhia meej seb lub sijhawm ua haujlwm puas siv tau rau lub sijhawm tam sim no, kev thauj khoom yav tom ntej, lossis qhov chaw thau khoom. Txhais seb cov roj teeb puas yog sab hauv lossis sab nraud, qhov chaw muaj roj teeb-chav tsev, saib xyuas, cais tawm, thiab leej twg muab cov khoom khib nyiab, txee, DC tiv thaiv, thiab kev sib txuas ntawm cables.
Recharge kev ua tau zoo tuaj yeem yog qhov tseem ceeb raws li kev ywj pheej pib. Qhia lub sij hawm them rov qab siab tshaj plaws, muaj peev xwm tawm tswv yim, thiab seb qhov kev rov ua dua tshiab puas tuaj yeem ntseeg tau. Nug tus neeg muag khoom kom txheeb xyuas cov nqi them tam sim no, qhov kev xav, thiab txhua yam cuam tshuam rau qhov kev xav tau ntawm cov khoom siv hluav taws xob. Yog tias lub kaw lus yuav tsum pib ntawm lub roj teeb yam tsis muaj lub hauv paus, suav nrog cov haujlwm ntawd thiab nws qhov kev sim hauv qhov tshwj xeeb.
Tsis txhob rov siv lub roj teeb rov qab los ntawm cov qauv UPS lossis DC tsheb npav sib txawv. Tus neeg muag khoom yuav tsum tau muab ib qho kev suav rau qhov kev ua haujlwm ntawm inverter, DC voltage, cell lossis roj teeb hom, tus naj npawb ntawm cov chav nyob, cov ntaub ntawv tawm, qhov kub thiab txias. Qhov dav USYTU UPS khoom qeb tuaj yeem pab cov neeg yuav khoom txheeb xyuas cov qauv tsim muaj, tab sis txhua qhov kev suav ua haujlwm tseem muaj kev teeb tsa tshwj xeeb.
Muab cov lus qhia hauv zos uas xav tau, cov npe ceeb toom, kev sib cuag qhuav, hluav taws xob thaum muaj xwm txheej ceev, kev saib xyuas cov chaw taws teeb, kev sib txuas lus, kev sib txuas hauv lub network, lub sijhawm synchronization, kev tshwm sim tuav, thiab kev koom ua ke nrog lub tsev lossis chaw tswj xyuas cov ntaub ntawv. Txhais cov teeb liab twg yog qhov yuav tsum tau ua thiab leej twg ua daim ntawv qhia, sim, thiab sau lawv.
Cov kev cai cybersecurity yuav tsum tau hais ua ntej daim npav network lossis cov chaw taws teeb nkag tau txais. Txheeb xyuas cov txheej txheem tso cai, hais txog lub luag haujlwm, txoj cai tswj hwm tus password, txwv kev nkag mus rau thaj chaw deb, thiab tog uas pom zoo rau kev sib txuas rau cov nroj tsuag network. Ib qho kev xaiv kev sib txuas lus tsis ua tiav kom txog rau thaum daim ntawv teev npe thiab cov qauv xeem tau pom zoo.
Xa cov ntaub ntawv qhia txog qhov chaw: chav loj, qhov rooj thiab txoj hauv kev clearances, pem teb loading, cua los yog txias tej yam kev mob, altitude, ambient kub, av noo, plua plav, seismic los yog vibration yuav tsum yog muaj, pem hauv ntej thiab nram qab kev pab cuam clearance, thiab sab saum toj los yog hauv qab cable nkag. Ib qho kev tsim nyog UPS tseem yuav tsis tsim nyog yog tias nws tsis tuaj yeem thauj, tso, tso pa tawm, lossis khaws cia hauv qhov chaw muaj.
Tus neeg yuav khoom ib txwm muab ib lub vev xaib ib-kab kab kos, lub sijhawm thauj khoom, qhov chaw thiab hla cov ntaub ntawv, chav tsev layout, cable nkag nyiam, tswj kev xav, kev sib txuas lus, thiab cov qauv tsim nyog. Qhov no yog lub hauv paus tsim sab nrauv. Tshwj tsis yog tias daim ntawv cog lus kev yuav khoom tau qhia meej meej rau lwm yam, tus neeg yuav khoom yuav tsum tsis tas yuav tsim cov chaw tsim khoom tsim hluav taws xob sab hauv.
Tus neeg muag khoom yuav tsum xa rov qab daim duab qhia ib kab, kev npaj dav dav, cov phiaj xwm davhlau ya nyob twg, kev kos duab cable nkag, lub sijhawm sib tham, cov ntaub ntawv tiv thaiv, kev npaj roj teeb, cov ntaub ntawv kub-tso thiab qhov cua, cov ntaub ntawv hauv paus lossis cov ntaub ntawv hauv pem teb, thiab daim nqi ntawm cov ntaub ntawv raws li kev pom zoo. Cov ntaub ntawv yuav tsum muaj tus lej hloov kho thiab pom zoo raws li txoj cai.
Ib uninterruptible fais fab mov teeb duab pom nyob rau hauv ib tug laus kev sib tw yuav siv tau raws li ib tug siv, tab sis nws yuav tsum tsis txhob ntsiag to override lub load tam sim no thiab site cov ntaub ntawv. Kos cov ntaub ntawv siv raws li "rau lub tswv yim," "rau cov lus hais," lossis "rau kev pom zoo." Yog tias ob daim ntawv tsis sib haum, daim ntawv cog lus yuav tsum hais tias qhov twg muaj qhov tseem ceeb thiab yuav daws qhov sib txawv li cas.
| Cov ntaub ntawv | Tus neeg yuav khoom nkag | Cov khoom xa rov qab | Txias point |
|---|---|---|---|
| Lub sijhawm thauj khoom | Loads, luag hauj lwm, expansion thiab criticality | Kev ntsuas ntsuas thiab kev xav | Ua ntej zaum kawg xaiv qauv |
| Daim duab kab ib kab | Qhov chaw, bypass, earthing thiab faib ciam teb | Muab topology, kev sib cais thiab kev sib txuas | Ua ntej cov ncauj lus kom ntxaws engineering |
| Kev npaj dav dav | Chav tsev, kev nkag mus thiab cable nkag txwv | Dimensions, hnyav, clearances thiab seem | Ua ntej ntau lawm tso tawm |
| Interface teem caij | Xav tau lub tswb, cov lus txib thiab cov txheej txheem | Daim ntawv teev npe, terminals thiab cov tswv cuab | Ua ntej software configuration |
| Cov txheej txheem kuaj | Ua tim khawv cov ntsiab lus thiab kev lees txais | Cov txheej txheem, cov cuab yeej thiab cov ntaub ntawv | Ua ntej FAT |
Tsim ib qho kev ua raws matrix nrog ib kab ib qhov yuav tsum tau ua. Tus neeg muag khoom yuav tsum teb raws li kev cai, sib txawv, xaiv tau, lossis tsis suav nrog thiab siv cov ntaub ntawv cuam tshuam. Cov lus hais uas hais tias " tuaj yeem hloov kho" yam tsis muaj cov lus teb uas cim tsis tau tsim qhov kawg ntawm qhov kawg.
Tom qab kev qhia meej meej, muab daim ntawv teev npe uas yuav tsum tau ua kom khov thiab tso cai rau daim ntawv teev npe. Cov kev hloov pauv yuav tsum txheeb xyuas qhov laj thawj, cuam tshuam cov duab kos, tus nqi, qhov cuam tshuam rau kev xa khoom, qhov yuav tsum tau rov ua dua, thiab txoj cai pom zoo. Cov lus thov uas tau ua thaum lub rooj sib tham yuav tsum tsis txhob ncav cuag ntau lawm kom txog thaum lawv tshwm sim hauv cov ntaub ntawv tswj.
Cais qhov yuav tsum tau hloov los ntawm kev nyiam. Qhov sib txawv input voltage, qhov ntsuas qhov ua txhaum, roj teeb lub luag haujlwm, lossis kev hla kev tsim qauv tuaj yeem cuam tshuam rau kev tsim hluav taws xob. Txee xim lossis lo lus lo lus yuav cuam tshuam rau cov ntaub ntawv thiab kev tsim khoom tab sis tsis muaj zog ua haujlwm. Kev kho txhua qhov kev hloov pauv raws li qhov sib npaug ua rau kev tshuaj xyuas qeeb thiab zais cov khoom uas xav tau kev kuaj xyuas engineering.
Qhov twg qhov project tuaj yeem siv tus qauv teeb tsa, sib piv nrog cov qauv tsim kev cai. Ib tug nyob ze 10-80kVA high-frequency peb-theem online UPS sawv cev rau tsev neeg cov khoom sib txawv uas tej zaum yuav cuam tshuam rau qee qhov kev ntsuam xyuas, tab sis nws yuav tsum tsis txhob raug kho raws li kev hloov pauv tau. Nug tus neeg muag khoom kom piav qhia qhov sib txawv ntawm topology, hneev taw, kev tawm tswv yim thiab kev coj tus cwj pwm, kev teeb tsa roj teeb, txoj kev pabcuam, thiab qhov project tsim nyog.
Lub Hoobkas lees txais kev xeem yuav tsum tau sau tawm tsam qhov kev pom zoo. Txheeb xyuas cov qauv thiab daim ntawv teev npe, kev pom kev ua haujlwm, kev xaim thiab cov khoom siv hluav taws xob, kev pib ua haujlwm, kev ua haujlwm ib txwm muaj, roj teeb ua haujlwm, hla kev hloov mus, lub tswb thiab cov ntsiab lus sib txuas lus, kev ua haujlwm xwm txheej ceev, cov khoom siv hluav taws xob, kev kuaj xyuas cov ntaub ntawv, thiab tshuaj xyuas cov ntaub ntawv. Lub xeev qhov kev xeem twg raug pom thiab qhov twg tau txais kev txhawb nqa los ntawm cov ntaub ntawv niaj hnub.
Cov txiaj ntsig kev ua tau zoo thiab lub sijhawm xeem yuav tsum yog los ntawm qhov kev pom zoo tshwj xeeb, tsis yog tsim los ntawm lub Hoobkas. Yog tias tsis muaj kev kuaj tag nrho, tus neeg muag khoom yuav tsum hais txog lwm txoj hauv kev thiab tus neeg yuav khoom yuav tsum pom zoo ua ntej qhov kev xeem. Sau cov ntsuas ntsuas, ntsuas qhov tseem ceeb, software version, teeb tsa, kev sib txawv, thiab kev kho kom raug.
Kev lees paub ntawm qhov chaw yuav tsum xyuas cov khoom tshwj xeeb uas lub Hoobkas tsis tuaj yeem ua pov thawj: qhov chaw thiab hla kev sib txuas, theem sib lawv liag, earthing, qhov cua, cable terminations, upstream thiab downstream tiv thaiv, lub tshuab hluav taws xob kev sib txuas lus, cog kev sib txuas lus, kev thauj mus los, kev teeb tsa roj teeb, thiab cov txheej txheem ua haujlwm. Kev xa khoom yuav tsum suav nrog kev pom zoo kos duab, teeb tsa, cov ntawv xeem, phau ntawv qhia, daim ntawv teev cov khoom seem, cov sijhawm saib xyuas, thiab cov ntaub ntawv qhia kev kawm.
Kev sib piv tus nqi yuav tsum siv tib yam. Tshooj lus ntawm vim li cas tib-kVA UPS tej yaam num muaj nqi sib txawv qhia txog qhov tseem ceeb ntawm kev sib piv cov roj teeb, hla dhau, kev teeb tsa, kev sim, thiab kev pabcuam es tsis yog lub txee ntsuas ib leeg.
Tus neeg sawv cev qhov xwm txheej - tsis yog rooj plaub ntawm cov neeg siv khoom thov.
Ib qho chaw cog lus thov kev cai 200kVA peb-theem online UPS siv daim duab qub qub. Daim duab qhia tsis muaj cov ntaub ntawv hla kev sib cais, daim ntawv teev cov khoom sib xyaw ua ke tam sim no thiab yav tom ntej motors, roj teeb runtime yog teev tsis muaj qib load, thiab chav teeb duab tshem tawm cov kab nkag thiab kev pabcuam tshem tawm. Peb tus neeg sib tw rov qab sib txawv, tab sis txhua qhov kev thov ua raws.
Tus neeg yuav khoom teeb tsa lub sijhawm hloov kho, qhov chaw thiab hla lub rooj, chav teeb tsa, lub sijhawm ua haujlwm, cov npe teeb liab, thiab cov ntawv sau npe. Txhua tus neeg muag khoom kos cim qhov sib txawv thiab xa rov qab qhov ntsuas ntsuas, thov ib kab, kev npaj dav dav, suav roj teeb, thiab cov ntawv FAT. Cov kev muab tuaj yeem raug muab piv los ntawm kev txheeb xyuas qhov tseeb, thiab kev tsim khoom pib tsuas yog tom qab cov ntaub ntawv pom zoo pom zoo.
Pib nrog lub sijhawm thauj khoom txuas mus rau qhov chaw ib kab kab kos duab. Lub sijhawm thauj khoom tsim muaj kW, kVA, lub zog ua haujlwm, tus cwj pwm tsis zoo, lub luag haujlwm, kev thuam, thiab nthuav dav. Cov kab ib leeg tsim cov peev txheej, bypass, earthing, theem kev npaj, tiv thaiv ciam teb, thiab kev sib txuas sib txuas.
Feem ntau, cov neeg yuav khoom txhais cov kev ua tau zoo, kev sib txuas sab nraud, qhov chaw txwv, thiab cov qauv siv tau. Cov chaw tsim khoom tsim thiab tswj cov qauv tsim sab hauv rau cov khoom muaj. Yog tias daim ntawv cog lus yuav tsum tau txais kev pom zoo los ntawm tus neeg yuav khoom ntawm kev nthuav dav ntxiv, hais cov ntaub ntawv theem thiab lub luag haujlwm pom zoo meej.
kW sawv cev rau lub zog tiag tiag thiab kVA sawv cev rau lub zog pom tseeb. UPS loading nyob ntawm ob qho tib si, ua ke nrog lub zog thauj khoom thiab kev coj tus cwj pwm tsis zoo. Kev qhia tsuas yog ib qho tuaj yeem ua rau muaj qhov kev pom zoo uas raug ntsuas tab sis tsis phim qhov tseeb qhov profile.
Tsis yog. Nws txheeb xyuas tsev neeg uas muaj ntau yam kev ntaus nqi. Kev npaj txee, roj teeb system, kev tiv thaiv, cables, hneev taw, bypass, thiab qhov project engineering tuaj yeem sib txawv los ntawm kev xaiv lub peev xwm thiab kev xaiv. Thov cov qauv tshwj xeeb kos duab, cov ntaub ntawv, thiab kev ntsuas qhov ntsuas rau qhov ntsuas ntsuas.
Tso tawm ntau lawm tom qab kev ua raws li matrix, qhov kawg qhov kawg, pom zoo ib kab, kev npaj dav dav, lub hauv paus roj teeb, kev cuam tshuam, cov ntaub ntawv sau npe, thiab cov kev xeem yuav tsum tau khov. Txhua yam khoom qhib uas tuaj yeem hloov hluav taws xob tsim, kev tsim vaj tsev, lossis kev lees paub yuav tsum raug daws lossis raug tswj hwm.
FAT txheeb xyuas qhov pom zoo cov khoom teeb tsa ntawm lub Hoobkas siv cov kev pom zoo. SAT txheeb xyuas qhov kev teeb tsa-nyob ntawm qhov chaw, suav nrog qhov chaw, hla dhau, cables, earthing, qhov cua, kev tiv thaiv, kev sib txuas lus, kev sib cuam tshuam, thiab cov txheej txheem khiav haujlwm. Ob qhov kev xeem yuav tsum muaj cov qauv kev lees paub.
Siv cov matrix ua raws li kev cai thiab normalize qhov ntsuas, roj teeb, bypass, kev tiv thaiv, kev sib txuas lus, kos duab, kuaj, commissioning, kev cob qhia, spares, warranty, thiab cais tawm. Tus nqi qis qis tsis qhia tus nqi ua tiav qis dua thaum qhov sib txawv.
Xa USYTU lub sijhawm thauj khoom, daim duab kab ib kab, kev tawm tswv yim thiab hla cov ntaub ntawv, cov khoom tsim tawm, lub sijhawm ua haujlwm, cov ntsiab lus ntawm cov roj teeb hauv chav, kev teeb tsa kev teeb tsa, ib puag ncig, kev sib txuas lus, cov ntaub ntawv tiv thaiv, cov qauv xav tau, daim ntawv teev npe, FAT cov qauv, xa mus rau qhov chaw, thiab lub sijhawm ua haujlwm. Siv cov USYTU contact page thov kom muaj kev ua raws cai thiab kev sib txawv teb.
Cov neeg yuav khoom kuj tuaj yeem tshuaj xyuas qhov dav dua USYTU lub zog thiab cov ntaub ntawv-chaw khoom ntau yam thaum qhov project suav nrog cov roj teeb, micro-module infrastructure, lossis lwm yam khoom siv hluav taws xob rov qab dhau ntawm UPS txee.