Transformer Sizing Chart: Ua tiav Phau Ntawv Qhia rau Xaiv Txoj Cai Transformer
Yog tias koj ua haujlwm nrog cov tshuab hluav taws xob, muaj cov khoom siv hluav taws xob hloov hluav taws xob tuaj yeem ua rau lub neej tiag tiag. Txawm hais tias koj tab tom teeb tsa lub hwj chim rau lub khw me, lub Hoobkas, lossis txawm tias lub chaw khaws ntaub ntawv, daim ntawv qhia qhov ntsuas qhov ntsuas no yuav pab koj xaiv qhov loj me yam tsis muaj kev kwv yees. Nws ua kom cov khoom muaj kev nyab xeeb, ua haujlwm zoo, thiab zam cov kev mob taub hau kim heev hauv kab.
(Nyem daim duab kom paub ntxiv.)
Hauv phau ntawv qhia no, kuv yuav coj koj los ntawm cov hauv paus, qhia qee cov kab kos ua ke, thiab muab pov rau hauv tiag -cov lus qhia hauv ntiaj teb kom koj tuaj yeem siv nws zoo li tus kws tshaj lij.
Vim li cas Transformer Sizing Matters
Xaiv qhov tsis ncaj ncees lawm transformer loj yog ib qho ntawm cov yuam kev uas koj tsis xav ua. Tsawg dhau thiab nws overheats los yog ua tsis tau thaum lub load hnyav. Loj dhau thiab koj yeej ib txwm muab cov nyiaj pov tseg ntawm ib yam dab tsi uas tsis khiav ntawm nws qhov zoo tshaj plaws. Ib daim ntawv qhia zoo transformer sizing pab koj ntaus qhov chaw qab zib rau kev ntseeg siab thiab tus nqi.
Transformer Sizing Formulas
Ua kom yooj yim:
Ib theem:kVA=(Volts × Amps) / 1,000
Peb theem:kVA=(Volts × Amps × 1.732) / 1,000
Cov no yog cov kev suav ceev uas koj yuav siv feem ntau ntawm lub sijhawm.
Transformer Sizing Chart - Standard kVA Ratings
Tib -Phase Transformers:1, 1.5, 2, 3, 5, 7.5, 10, 15, 25, 37.5, 50, 75, 100, 167, 250 kVA
Peb -Theem Transformers:3, 6, 9, 15, 30, 45, 75, 112.5, 150, 225, 300, 500, 750, 1000, 1500, 2000+ kVA
Ib txwm mus nrog tus txheej txheem tom ntej no los ntawm qhov koj suav - zoo dua kev nyab xeeb dua thov txim.
Transformer Sizing Chart - Tag Nrho Tam Sim No (Ib Theem Ib Leeg)
| kVA ua | 120V | 208V | 240V | 277V | 480V |
|---|---|---|---|---|---|
| 5 | 41.7 | 24.0 | 20.8 | 18.0 | 10.4 |
| 10 | 83.3 | 48.1 | 41.7 | 36.1 | 20.8 |
| 15 | 125 | 72.1 | 62.5 | 54.2 | 31.3 |
| 25 | 208 | 120 | 104 | 90.3 | 52.1 |
| 37.5 | 312 | 180 | 156 | 135 | 78.1 |
| 50 | 417 | 240 | 208 | 180 | 104 |
| 75 | 625 | 361 | 312 | 271 | 156 |
| 100 | 833 | 481 | 417 | 361 | 208 |
Transformer Sizing Chart - Tag Nrho Tam Sim No (Peb Theem)
| kVA ua | 208V | 240V | 480V | 600V |
|---|---|---|---|---|
| 15 | 41.6 | 36.1 | 18.0 | 14.4 |
| 30 | 83.3 | 72.2 | 36.1 | 28.9 |
| 45 | 125 | 108 | 54.1 | 43.3 |
| 75 | 208 | 180 | 90.2 | 72.2 |
| 112.5 | 312 | 271 | 135 | 108 |
| 150 | 416 | 361 | 180 | 144 |
| 225 | 625 | 541 | 271 | 217 |
| 300 | 833 | 722 | 361 | 289 |
| 500 | 1,389 | 1,202 | 601 | 481 |
| 750 | 2,083 | 1,804 | 902 | 722 |
| 1000 | 2,778 | 2,405 | 1,202 | 962 |
Yuav Siv Li Cas Transformer Sizing Chart
Nov yog txoj hauv kev yooj yim kom nws ua haujlwm rau koj:
Txheeb xyuas koj cov load tag nrho hauv amps thiab nco ntsoov qhov voltage.
Txuas cov lej rau hauv cov qauv kom tau txais koj kVA.
Txheeb xyuas daim ntawv qhia qhov loj me ntawm lub tshuab hluav taws xob thiab xaiv qhov loj me tom ntej.
Ntxiv me ntsis chav ntxiv - feem ntau 20-25% yog ntse.
Piv txwv 1 (Single Phase):Tau txais 240V teeb rub 90A? Qhov no ua haujlwm tawm mus txog 21.6 kVA. kuv yuav grab a25 kVAlos ntawm daim duab.
Piv txwv 2 (Peb Theem):480V system nrog 160A tag nrho? Qhov no yog kwv yees li 133 kVA. Mus nrog150 kVA uarau qee qhov chaw ua pa.
Cov ntsiab lus tseem ceeb thaum siv daim ntawv qhia kev hloov pauv hloov pauv
Tsis txhob hnov qab cov no tiag - ntiaj teb cov khoom:
Nruam loads: Tuav nws li 125% yog tias nws yuav khiav mus rau cov xuab moos thaum kawg.
Lub cev muaj zog loads: Cov kev pib ua lag luam tuaj yeem ua phem - ntxiv qee qhov peev xwm ntxiv.
Fais fab xwm txheej: Feem ntau qhov chaw khiav ntawm 0.8 txog 0.85.
Kev loj hlob yav tom ntej: Muab pov rau hauv 20-50% ntxiv yog tias koj xav tias tej yam yuav nthuav.
Harmonics: Cov khoom xws li khoos phis tawj lossis cov tsav tsheb yuav xav tau K- ntsuas tshwj xeeb.
Qhov twg nws tau nruab: Kub kub lossis nce siab txhais tau tias koj yuav tsum tau derate nws me ntsis.
Xaus
Nyob ntawd koj muaj nws - daim ntawv qhia qhov ntsuas qhov ntsuas hluav taws xob no yuav tsum muab koj qhov pib txhim khu kev qha rau feem ntau txoj haujlwm. Nws ua kom koj lub cev ua haujlwm tau zoo, txo qis lub zog uas tsis muaj zog, thiab pab koj nyob hauv txoj cai- ua raws yam tsis muaj kev ntxhov siab.
Yog tias tej yam nyuaj (xws li kev teeb tsa loj loj lossis ib puag ncig tshwj xeeb), nws yeej tsim nyog tham nrog tus kws tshaj lij hluav taws xob lossis tus kws tshaj lij.
Tau txais ib qho kev thauj khoom tshwj xeeb koj xav tau kev pab sizing? Tso cov ntsiab lus - voltage, amps, theem, txawm koj tau txais - thiab kuv mam li khiav cov lej rau koj.
FAQ
Q: Kuv yuav siv daim ntawv qhia kev hloov pauv li cas los xaiv qhov loj?
A: Xam koj cov load uas siv cov mis (Volts × Amps / 1,000 rau ib theem), ces xaiv tus qauv kVA tom ntej no los ntawm daim ntawv qhia kev hloov pauv. Ib txwm ntxiv 20-25% muaj peev xwm ntxiv rau kev nyab xeeb.
Q: Qhov txawv ntawm ib zaug -theem thiab peb-theem transformers yog dab tsi?
A: Ib zaug -theem yog ib qho rau cov khoom me me xws li cov tsev lossis cov khw me, thaum peb -theem yog qhov zoo dua rau kev lag luam loj lossis kev teeb tsa lag luam. Daim ntawv qhia qhov ntsuas qhov ntsuas hluav taws xob muaj cais cov rooj rau txhua tus kom xaiv tau yooj yim dua.
Q: Kuv puas yuav tsum oversize kuv transformer?
A: Yog, me ntsis. Loading lub transformer ntawm tsis ntau tshaj 80% ntawm nws cov kev ntsuam xyuas yog ntse. Daim ntawv qhia pab koj xaiv qhov loj me uas muab chav ua pa rau yav tom ntej nthuav dav thiab lub cev muaj zog pib surges.
Q: Yuav ua li cas yog tias kuv lub load muaj motors lossis khiav tsis tu ncua?
A: Ntxiv lub peev xwm ntxiv rau lub cev muaj zog inrush thiab muab cov khoom hnyav ntxiv los ntawm 125%. Txheeb xyuas daim ntawv qhia qhov ntsuas qhov ntsuas hluav taws xob thiab xav txog K- cov ntsuas ntsuas yog tias koj muaj hluav taws xob ntau lossis tsav tsheb.
