Xaiv txoj cai transformer tuaj yeem xav tias nyuaj - muaj ntau ntau yam kev qhia thiab kev xaiv. Tab sis yog tias koj ua raws cov kauj ruam - los ntawm - cov txheej txheem, qhov kev txiav txim siab yuav pom tseeb.
Phau ntawv qhia no yuav coj koj mus txog 7 cov kauj ruam tseem ceeb los xaiv qhov zoo tshaj plaws transformer rau koj daim ntawv thov.
Kauj Ruam 1: Txiav txim siab qhov yuav tsum tau muaj peev xwm (kVA lossis MVA)
Qhov tseem ceeb tshaj plaws parameter. Peev xwm yog ntsuas nyob rau hauv kVA (kilovolt-}amperes) rau me me los yog MVA rau loj transformers.
Yuav ua li cas xam approximate kVA:
Rau peb -theem transformer:
kVA=(Voltage × Tam sim no × √3) / 1000
Yog tias koj paub koj qhov load hauv kW:
kVA=kW / Fais fab tuag (feem ntau 0.8-0.9)
Cov lus qhia tswv yim: Ntxiv 20-30% paj rau yav tom ntej nthuav dav lossis kev thauj khoom ib ntus. Tsis txhob oversize los ntawm ntau tshaj 50% - efficiency poob ntawm loads tsawg heev.
Kauj ruam 2: Txheeb xyuas cov tswv yim thiab cov zis hluav taws xob
Koj yuav tsum paub:
Primary voltage (input side) - dab tsi voltage nkag mus rau hauv lub transformer
Secondary voltage (sab tso zis) - qhov voltage koj cov khoom xav tau
Common voltages:
Tsawg voltage: 400V, 480V, 690V
Nruab nrab voltage: 11kV, 33kV, 35kV, 66kV
Lub zog hluav taws xob: 110kV, 132kV, 220kV
Kuj tseem qhia: Tus naj npawb ntawm theem (ib zaug-theem lossis peb-theem) thiab zaus (50Hz lossis 60Hz).
Kauj ruam 3: Xaiv Transformer Hom – Roj-Immered los yog qhuav-Hom?
Qhov no yog ib qho kev txiav txim siab loj tshaj plaws. Siv phau ntawv qhia ceev no:
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Yog tias koj qhov project yog… |
Hom kev pom zoo |
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Sab nraum zoov substation |
Roj - raus |
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Chav hluav taws xob sab hauv tsev |
Qhuav - hom |
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High-nce tsev |
Qhuav - hom |
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Industrial cog (sab nraum zoov) |
Roj - raus |
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Tsev kho mob / data center |
Qhuav - hom |
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Hnub ci lossis cua ua liaj ua teb |
Roj - raus |
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Qhov tob / metro |
Qhuav - hom |
Yog xav paub ntxiv txog kev sib piv, saib peb phau ntawv qhia: Roj-Immersed vs Dry-Type Transformer.
Kauj ruam 4: Xav txog Installation Ib puag ncig
Koj lub transformer yuav tsum muaj sia nyob qhov twg nws tso. Teb cov lus nug no:
Sab hauv lossis sab nraum zoov?
Cov chav nyob sab nraum zoov xav tau kev tiv thaiv huab cua (IP ntsuas) thiab UV- cov xim tiv thaiv.
Ambient kub?
High temperatures (>40 degree) yuav tsum tau derating lossis ua kom txias txias.
Qhov siab?
Tshaj li 1000m, cua txias tsis zoo - qhia qhov siab tsim.
Cov pa phem / plua plav / ntsev tsuag?
Ib puag ncig hnyav yuav tsum muaj qhov ntsuas IP siab dua thiab corrosion- cov txheej tiv thaiv.
Kauj Ruam 5: Paub meej tias yuav tsum muaj cov qauv thiab cov ntawv pov thawj
Ntau lub teb chaws xav tau cov ntawv pov thawj sib txawv. Tshawb xyuas nrog koj cov cai hauv zos lossis cov neeg siv khoom.
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Thaj tsam |
Cov qauv zoo sib xws |
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Teb chaws Europe |
IEC 60076, CE |
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Teb chaws USA |
IEEE C57.12, UL tau teev tseg |
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Canada |
CSA C88 |
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Middle East |
IEC lub BS |
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Australia |
ib 60076 |
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Thoob ntiaj teb |
ISO 9001 (kev tsim khoom zoo) |
Nco ntsoov nug koj tus neeg muag khoom rau cov ntawv tshaj tawm uas tau lees paub (cov ntawv xeem, cov ntawv xeem niaj hnub).
Kauj Ruam 6: Qhia txog txoj kev ua kom txias
Cov cua txias cuam tshuam qhov loj me, tus nqi, thiab muaj peev xwm ntau dhau.
Rau roj-immersed transformers:
ONAN - natural oil, ntuj huab cua (feem ntau)
ONAF - cov roj ntuj, cua txias (ntxiv cov kiv cua kom muaj peev xwm ntau dua)
OFAN - quab yuam roj, yuam cua (rau chav loj)
Rau qhuav- hom transformers:
AN - huab cua ntuj (tus qauv)
AF - yuam cua (kiv cua kom muaj peev xwm ntxiv)
Qhia rau koj tus neeg muag khoom txog qhov kub siab tshaj plaws nyob ib puag ncig thiab ib qho luv luv - lub sijhawm dhau qhov yuav tsum tau ua.
Kauj Ruam 7: Ntsuas Tus Neeg Siv Khoom - Tshaj Tawm Nqe
Tus nqi tseem ceeb, tab sis cov xwm txheej no tseem ceeb npaum li:
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Qhov xwm txheej |
Yuav kuaj li cas |
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Kev paub |
Ntev npaum li cas hauv kev lag luam? Tej yaam num siv? |
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Cov ntawv pov thawj |
ISO9001, CE, UL, thiab lwm yam - thov luam ntawv |
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Lub sijhawm ua haujlwm |
Standard vs xa ceev |
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Warranty |
Hom 1-3 xyoos; nws npog dab tsi? |
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Cov khoom seem |
Muaj thiab tus nqi ntawm cov khoom siv |
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Tom qab - kev muag khoom |
24/7 kev pab? Hauv - qhov kev pabcuam? |
Ua ntej koj hu rau tus neeg muag khoom, npaj cov lus teb no:
Peev xwm (kVA / MVA): ______
Thawj qhov voltage: ______V
Secondary voltage: ______V
Zaus: 50Hz / 60Hz
Theem: Ib leeg / Peb
Hom: Roj-immersed / Qhuav- hom
Installation: Sab hauv / Sab nraum zoov
ambient kub: ______ degree
Qhov siab: ______ m
Cov qauv yuav tsum muaj: ______
Ceev / sij hawm ua: ______ lub lis piam
Xaiv lub transformer tsis tas yuav nyuaj. Ntawm Union Power, peb tau pab cov neeg siv khoom thoob plaws Middle East, Tebchaws Asmeskas, Nyiv, Kaus Lim Kauslim, thiab Central Asia nrhiav txoj cai hloov pauv rau lawv cov haujlwm.
Xa koj cov lus qhia rau peb - peb yuav teb nrog cov lus pom zoo thiab nqe lus hauv 24 teev.
