Ua kom tiav Phau Ntawv Qhia Kom Qhuav -Hom Transformers

Lub transformer yog ib qho khoom siv uas hloov lub zog ntawm ib qho kev hloov pauv - tam sim no mus rau lwm qhov. Qhuav hom transformers yog siv rau ntau daim ntawv thov los txo qhov voltage ntawm cov pa hluav taws xob circuits. Kawm paub ntxiv txog dab tsi lub tshuab ziab khaub ncaws qhuav thiab qhov twg peb siv cov tshuab ziab khaub ncaws qhuav.

 

Dab tsi yog Dry Type Transformer?

Lub tshuab ziab khaub ncaws qhuav yog txias los ntawm huab cua ib puag ncig es tsis txhob ua kua xws li ntxhia roj lossis Envirotemp FR3. Cov transformers thaum ntxov uas tsim los ntawm Westinghouse thiab General Electric tau cua txias vim tias lawv ua haujlwm ntawm lub zog qis thiab qhov hluav taws xob. Feem ntau cov cuab yeej hloov pauv thiab qis -voltage chargers hnub no kuj yog hom qhuav. Cov kua dej txias hauv cov tso tsheb hlau luam kaw thiab cov ntaub thaiv hlau tau dhau los ua tus qauv rau AC fais fab kev faib hluav taws xob hloov pauv vim qhov hluav taws kub induction siab dua thiab raug rau txhua yam - huab cua. Vim yog kev txhim kho hauv kev tsim, cov khoom siv thiab kev tsim khoom hauv peb lub xyoos dhau los, cov tshuab ziab khaub ncaws qhuav tsis tsuas yog sib tw nrog cov kua -cooled transformers nyob rau hauv nruab nrab voltage range (2.5KV - 34.5 KV) tab sis muaj qhov zoo ntawm ntau yam kev lag luam thiab kev lag luam.

 

Kawm paub ntau ntxiv txog Peb Cov Hom Qhuav Transformers

 

Qhuav-Type Vs. Kua Cooled (Padmount) Transformers

 

Thaum tsim thiab tsim kom tau raws li cov qauv kev lag luam tam sim no, nruab nrab -voltage qhuav hom thiab padmount transformers muaj qhov tseem ceeb ntawm tib theem ntawm kev siv hluav taws xob thiab BIL rau qhov muab KVA ntsuas. Qhov sib txawv hauv kev ua haujlwm yog nyob ntawm daim ntawv thov thiab qhov chaw teeb tsa.

 

Kua-cooled padmount transformersyog siv los ntawm cov tuam txhab hluav taws xob rau ob qho tib si nruab nrab thiab siab dua cov ntawv thov hluav taws xob vim tias lawv tau tsim los rau txhua qhov - huab cua sab nraum zoov xws li chaw nres tsheb. Lawv muaj keeb kwm ntev ntawm kev muab lub zog ruaj ntseg, txhim khu kev qha, thiab tuaj yeem ntsia tau rau hauv qhov chaw pej xeem sab nraum zoov (nrog rau cov ntaub ntawv tsim nyog). Ib qho ntawm lawv qhov tsis zoo yog tias, txij li cov roj ntxhia siv los ua cov dej txias yog cov nplaim hluav taws kub, qhov hloov pauv tsis ua haujlwm (vim kev rwb thaiv tsev tsis ua haujlwm, overheating lossis xob laim tawm tsam) tuaj yeem ua rau tawg thiab hluav taws. Yog li, lawv tsis pom zoo rau kev teeb tsa sab hauv tsev lossis qhov twg qhov hluav taws kub tuaj yeem ua rau muaj kev puas tsuaj loj.

 

Qhuav hom transformersyog txias los ntawm huv ambient los yog yuam cua thiab tsis muaj kua. Lawv nthuav tawm qhov teeb meem hluav taws tsawg tsawg thiab tsim nyog rau kev teeb tsa hauv tsev lossis txhua qhov chaw hluav taws kub yuav tsum zam. Vim tias lawv tau tsim thiab tsim kom khiav txias thiab nyob ntsiag to, lawv zoo tagnrho rau kev teeb tsa sab hauv tsev hauv chaw ua haujlwm, tsev kawm qib siab, tsev kho mob, thiab tsim cov chav huv. Lawv tuaj yeem hloov cov kua ua kua-cooled transformers hauv ntau qhov chaw.

 

Cov hom qhuav tuaj yeem siv rau hauv qee qhov kev teeb tsa sab nraum zoov nrog cov cua kub nruab nrab thiab cov av noo thoob plaws lub xyoo yog tias tiv thaiv hauv NEMA hom 3 enclosure.

 

Cov txiaj ntsig ntawm GNEE Dry Type Transformers

Cov txiaj ntsig ntawm peb cov tshuab ziab khaub ncaws qhuav yog los ntawm ob qho tib si tsim thiab cov khoom siv hauv lawv cov kev tsim kho.

 

1. Kev paub, kev tsim qauv zoo, cov khoom siv thiab kev ua haujlwm zoo

GNEE Dry Type transformers yog tes-mob nyob rau hauv 100% tooj liab, nrog ib tug disc-mob puag ncig coil, slotted zuag, daim ntawv mob thib ob thiab ib kauj ruam -lap mitered core nrog tsawg flux ceev. Nomex lossis zaj duab xis npog hlau rwb thaiv tsev yog ntsuas ntawm 200℃thiab cov khoom rwb thaiv tsev yog SG 200 fiberglass. lub Nomex. Txhua chav tsev raug tshuaj xyuas thiab sim tsib zaug hauv cov txheej txheem tsim khoom thiab dua ua ntej xa khoom. Qhov kev cog lus tsis txaus ntseeg no ua rau muaj txiaj ntsig zoo rau cov neeg siv khoom.

 

2. Kev ua tau zoo heev

GNEE Dry Type Transformers tshaj Energy Star thiab DOE cov qauv kev siv hluav taws xob thiab ua tau raws li NEMA, ANSI thiab IEEE cov qauv tshiab. Lawv Qhov Kev Ruaj Ntseg Hauv Qib (BIL) cov qhab nia yog piv rau cov kua -cooled transformers.

 

3. Khiav txias thiab ntsiag to

Kev sib xyaw ua ke ntawm kev ua haujlwm zoo ntawm tes-mob tooj liab coils, ib kauj ruam- lap mitered core nrog qis flux ntom, thiab varnishing ntawm tag nrho chav tsev kom muaj suab nrov tsawg thiab kev co tom qab kev teeb tsa. Qhov no yog qhov zoo dua hauv ntau daim ntawv thov.

 

4. Lub neej siv tau ntev

Cov ntaub ntawv zoo tshaj plaws, kev tsim qauv zoo tshaj plaws thiab cov kws tshaj lij craftsmanship xa mus ntev - kev ua haujlwm tau zoo.GNEE Dry Type transformers tuaj nrog tsib- xyoo lav ntawm cov ntaub ntawv thiab kev ua haujlwm rau kev teeb tsa sab hauv tsev, thiab muaj lub neej xav tau ntawm 35 xyoo lossis ntau dua.

 

5. Tus nqi ntau dua

Kev tsim qauv zoo tshaj plaws thiab kev tsim kho tau ua rau:

Siab zog efficiency thiab ntsiag to unit.

Txo cov nqi hluav taws xob thiab kev saib xyuas.

Lub neej siv tau ntev dua.

5 - 7 xyoo them rov qab vim kev ua haujlwm siab dua thiab cov nqi ua haujlwm qis dua.

 

 

Kev lag luam uas siv qhuav hom Transformers

 

Muaj ntau hom kev lag luam uas siv cov tshuab ziab khaub ncaws qhuav.

 

Discrete Manufacturing

• Cov khw
• Sheet Hlau Fabrication
• Vuam
• Yas thiab Roj Hmab Moulding
• Tshuab
• Electroplating

 

Automation thiab Nruam txheej txheem

• Electronics Fabrication
• Hlau Mills
• Cov khoom siv me me
• Ntawv Mills
• Cov nroj tsuag tshuaj
• Kev ua zaub mov
• Lub raj mis cog
• Yas thiab Roj Hmab

 

Colleges & Universities

• Cov chav kawm
• Laboratories
• Data Centers
• Cov rooj sib tham
• Fais fab nroj tsuag
• Chaw Nyob

 

Tsev Kho Mob & Chaw Kho Mob

• Cov chaw phais mob
• Kev kho mob tseem ceeb
• Diagnostic Centers
• Cov cuab yeej tseem ceeb
• Laboratories
• Lub zog Redundancy

 

Hluav taws xob siv hluav taws xob

• Fais fab nroj tsuag
• Kev faib tawm
• Cov Substations nyob ze
• Cov neeg siv khoom noj

 

Thaum xaiv ib hom qhuav Transformer

 

Qhov tseem ceeb tshaj plaws hauv kev xaiv ntawm hom qhuav thiab kua -cooled transformer yog qhov chaw teeb tsa.

• Puas yog kev teeb tsa sab hauv lossis sab nraum zoov?
• Puas yog hluav taws kub muaj kev txhawj xeeb?
• Koj puas yuav tsum zam kom tsis txhob muaj cov kua dej los ntawm cov roj ntim?
• Cov neeg puas yuav taug kev nyob ze ntawm qhov chaw?
• Muaj pes tsawg qhov chaw?
• Hauv pem teb puas yuav txhawb nqa qhov hnyav?
• Puas yog qhov chaw teeb tsa qhuav, qhov cua zoo thiab tsis muaj plua plav thiab tshuaj?

 

GNEE qhuav hom transformers yog qhov zoo tagnrho rau kev teeb tsa sab hauv tsev nrog cov neeg nyob ze vim tias lawv khiav txias thiab nyob ntsiag to thiab ua rau muaj hluav taws tsawg dua. Lawv tuaj yeem ntsia tau rau sab hauv tsev nyob ze rau lub nra, uas yog qhov zoo dua hauv ntau daim ntawv thov kev lag luam. Lawv tuaj yeem raug ntsia sab nraum zoov hauv NEMA hom 3 hauv cov huab cua nruab nrab, tab sis yuav tsuas yog txhim khu kev qha raws li lub thawv.

 

Cov tshuab ziab khaub ncaws qhuav yuav tsum muaj qhov chaw nyob ib puag ncig kom txaus rau kev siv cua txias thiab kev saib xyuas (NEC 450.21.) Lub tshuab hloov pauv qhov loj me, qhov hnyav thiab qhov chaw ntawm kev sib txuas ntawm cov khoom siv hluav taws xob yuav tsum tau txais los ntawm GNEE thiab muab piv nrog koj qhov chaw teeb tsa.

Cov ntawv thov sab hauv tsev tsim nyog rau huab cua-cooled transformers suav nrog tsev kho mob, tsev kawm qib siab, chaw muag khoom, chaw ua haujlwm, thiab thaj chaw nyob.

 

Lwm daim ntawv thov muaj xws li:

• Environmentally rhiab heev thaj chaw,
• Cov cheeb tsam uas muaj hluav taws kub heev,
• Cov chaw ua yeeb yam thiab cov chaw sib tham
• Roj, tshuaj thiab roj industries
• Cov cheeb tsam tsim dua tshiab.

 

Yog tias qhov chaw uas koj lub tshuab hluav taws xob yuav tsum tau teeb tsa ua tau raws li qhov yuav tsum tau ua, tom qab ntawd lub tshuab ziab khaub ncaws qhuav yuav yog qhov kev xaiv zoo tshaj plaws rau daim ntawv thov vim tias txhua qhov zoo ntawm hom qhuav yuav raug pom zoo nyob rau hauv qhov chaw:

• Nyob hauv tsev,
• Kev sib txuas hluav taws xob sab hauv lossis sab nraud,
• Nruab nrab kub & humidity txhua lub caij,
• Huv ambient cua vim HVAC,
• Txwv tsis pub nkag los yog ib chav cais,
• Ua haujlwm nyob ze rau tib neeg,
• Xav tau kev ua haujlwm ntsiag to,
• Yuav tsum txo qhov phom sij ntawm hluav taws.

 

Dry Type Transformer Installation Tips

 

Cov ntaub ntawv hauv qab no tsuas yog siv rau kev teeb tsa sab hauv tsev ntawm GNEE qhuav hom transformers, uas kuj tau them los ntawm NEC Tshooj 450.21-28. Nov yog qee cov lus qhia ntxiv txog kev npaj rau kev teeb tsa sab hauv tsev qhuav. NEC 450.41-48 Kev teeb tsa sab nraum zoov ntawm cov tshuab hluav taws xob qhuav yog them los ntawm NEC 450.41-48.

Tuav Thaum Xa Khoom

Kev nqa nrog cov tsheb thauj khoom lossis cov tsheb forklift tau tso cai yog tias cov diav rawg ntev txaus kom dhau los ntawm rooj plaub. Txij li feem ntau cov transformers muaj qhov nruab nrab ntawm lub ntiajteb txawj nqus, ceev faj heev yuav tsum tau siv thaum nqa lossis txav cov units. Cov transformers loj dua yuav xav tau ib lub crane thiab cov neeg ua haujlwm rigging kom offload thiab txav lub tsev. Yog hais tias ib tug qhuav- hom transformer yuav tsum tau tsiv mus rau sab nraum zoov thaum huab cua tsis zoo nws yuav tsum tau kom huv si tiv thaiv kom txhob ya raws.

 

Cia

Cov chaw khaws cia yuav tsum huv thiab qhuav li sai tau yam tsis muaj qhov kub thiab txias. Kev tiv thaiv wrappings yuav tsum tau sab laug kom txog rau thaum lub transformer yog tsiv mus nyob rau nws qhov chaw mus tas li. Qhuav hom transformers khaws cia nyob rau hauv damp los yog plua plav tej yam kev mob yuav tsum tau qhuav tawm thiab ntxuav ua ntej muab ntsia thiab energized.

 

Qhov chaw teeb tsa

Yam tseem ceeb hauv kev xaiv qhov chaw sab hauv tsev rau lub tshuab ziab khaub ncaws qhuav yog:

• Kev siv tau
• Qhov cua
• Ib puag ncig tej yam kev mob
• Lub suab nrov

 

Lwm cov lus qhia muaj xws li:

Qhov chaw teeb tsa yuav tsum qhuav, tsis muaj plua plav, noo noo ntau dhau, chiv, tshuaj thiab lwm yam corrosive fumes los yog vapors, thiab cais los ntawm cov khoom siv hluav taws xob raws li NEC 450.21.

 

Txoj kev nkag mus rau qhov chaw yuav tsum muaj kev tshem tawm txaus kom txav lub transformer rau hauv qhov chaw. Tsis txhob muaj cov ntaiv thiab cov elevator yog ua tau.

Cov cheeb tsam hauv pem teb yuav tsum du thiab qib, thiab tuaj yeem txhawb nqa qhov hnyav (hauv phaus / sq. ft) ntawm transformer. Reinforced qhob yog qhov zoo dua.

 

Qhuav hom transformers yuav tsum tau ntsia nyob rau hauv ib theem upright txoj hauj lwm nyob rau hauv ib qho chaw uas muaj huab cua dawb. Yam tsawg kawg nkaus uas yuav tsum tau tshem tawm los ntawm cov cuab yeej thiab cov qauv uas nyob ib sab tau teev tseg hauv NFPA 60 (NEC Tshooj 450.21.) Kev txhim kho lub tshuab hloov pauv hauv NEMA enclosure xauv nws hauv chav rau kev nyab xeeb thiab kev nyab xeeb yog pom zoo.

 

Tsis txhob muaj qhov chaw uas yuav raug dej nyab los yog raug dej los yog ambient kub tshaj 30 degree.

 

Tsis txhob nruab cov tshuab ziab khaub ncaws qhuav hauv qab ntub hluav taws tua hluav taws. Siv lub tshuab hluav taws xob qhuav lossis ua npuas dej yog tias xav tau.

 

Chav yuav tsum

Kev teeb tsa sab hauv tsev yuav tsum ua raws li cov cai ntawm NEC Tshooj 450.21. Ib chav tsev uas muaj ntau hom kev hloov pauv yuav tsum loj txaus kom tso cai rau qhov chaw txaus ntawm lawv (raws li yuav tsum tau ua los ntawm NEC 450.21) kom tso cai rau huab cua ncig. Qhov chaw txaus yuav tsum muaj nyob ib ncig ntawm txhua lub tshuab hluav taws xob kom tso cai rau cov neeg ua haujlwm nkag mus rau niaj hnub tshuaj xyuas thiab tu.

 

Qhov cua txaus yog qhov tseem ceeb rau kev ua kom txias ntawm transformers. Chav tsev qhov cua yog ib feem ntawm lub tshuab cua txias thiab yuav tsum txhawb nqa huab cua ib txwm los ntawm kev hloov pauv, kom qhov ntsuas kub ntawm qhov hloov pauv yuav tsis pub tshaj nws cov ntawv teev npe. Cov huab cua huv, qhuav yog qhov zoo dua. Lim huab cua ntawm lossis siab dua atmospheric siab tuaj yeem txo kev saib xyuas yog tias muaj plua plav lossis lwm yam kab mob tshwm sim. Qhov yuav tsum tau muaj ntawm qhov qhib qhov cua yog nyob ntawm qhov siab ntawm chav tsev, qhov chaw ntawm qhov qhib thiab qhov siab tshaj plaws uas yuav tsum tau nqa los ntawm lub transformer. Chav tsev airflow yuav tsum raug soj ntsuam los ntawm tus kws tshaj lij HVAC kom ua raws li NFPA 90A, ntu 4.1 - 4.3 thiab IEEE C57.12.01 - 2020.

 

Thaum transformers nyob hauv chav lossis lwm qhov chaw txwv, yuav tsum muaj qhov cua txaus kom pov tseg ntawm lub transformer tag nrho -load cua sov poob yam tsis tso cai rau qhov kub siab tshaj qhov ntsuas lub npe. Yog tias tsim nyog, yuam cua cua yuav tsum tau siv los ua kom tiav qhov no.

 

Cov ntsiab lus tseem ceeb hauv Kev Kho Kom Qhuav Hom Transformers

 

Cov ntaub ntawv uas tau nthuav tawm no tsuas yog cov ntsiab lus ntawm cov ntsiab lus tseem ceeb thiab tsis qhia meej. Cov qauv thiab cov tseev kom muaj rau kev saib xyuas thiab kev sim ntawm nruab nrab voltage qhuav hom transformers muaj nyob rau hauv NEC Tshooj 450, Tshooj 21.3 thiab IEEE Std. 57.12.91 yuav tsum ua raws.

 

1. Khaws lub ntsuas kub

Ib ntus nyeem thiab sau cov ntsuas kub ntawm lub ntsuas hluav taws xob ntawm qhov qub thiab sib piv cov kev nyeem ntawv nrog cov ntaub ntawv keeb kwm. Qhov sib txawv loj lossis qhov kev ua haujlwm tsis tu ncua ntawm qhov ntsuas kub tsis tu ncua yuav qhia tau tias muaj teeb meem nrog lub tshuab cua txias lossis lub tshuab hloov pauv.

 

2. Ua Kev Kho Mob Tsuas Yog De-Energized Units

Ceev faj:Lub transformer yuav tsum de-energized (ob qho tib si thawj thiab theem nrab circuits disconnected) thiab tag nrho cov terminals grounded ua ntej ua ib qho kev soj ntsuam, tu, kev pab, los yog kev ntsuam xyuas ntawm lub tsev. Arc Flash suit yuav tsum hnav thaum de-energizing lub transformer, tab sis thaum nws yog de-energized, xauv tawm, tagged tawm thiab grounded, ib tug Arc Flash suit tsis tsim nyog.

 

2.1 Kev tshuaj xyuas qhov muag

Ceev faj:Qhov no yog ib qho kev kuaj pom xwb. Nws tsis tas yuav tsum kov ib feem ntawm lub transformer thaum ua qhov kev tshuaj xyuas.

Lub tshuab cua txias -cooled transformer yuav tsum tau kuaj pom lub sijhawm. Qhov zaus ntawm kev tshuaj xyuas nyob ntawm seb qhov kev siv lub tshuab hluav taws xob ntau npaum li cas. Lub tshuab hluav taws xob ua haujlwm ntawm kev thauj khoom tsis tu ncua 24/7 yuav tsum tau tshuaj xyuas ntau zaus tshaj li ib qho kev khiav hauj lwm ntawm kev thauj khoom tsuas yog 8 teev 5 hnub hauv ib lub lis piam. Txij li thaum lub transformer yuav tsum tau de-energized rau kev soj ntsuam thiab tu, txij nkawm yuav tsum tau teem lub sij hawm ib txwm kaw- lub sij hawm down. Khaws ib daim ntawv teev tag nrho cov kev soj ntsuam thiab kev saib xyuas kev ua haujlwm tau ua.

Nrhiav kom muaj qhov cua txaus nyob ib ncig ntawm lub transformer. Tshem tawm ib yam dab tsi hauv thaj chaw uas cuam tshuam rau huab cua. Tsis muaj dab tsi yuav tsum tau muab cia rau hauv chav tsev transformer. (NEC 450.21.3.5.1)

Qhib lub enclosure thiab nrhiav kev tsub zuj zuj ntawm hmoov av los yog av nyob rau ntawm qhov chaw ntawm lub transformer. Cov no yuav tsum tau muab ntxuav tawm thaum lub tsev yog de-energized .

Lub xub ntiag ntawm cov plua plav qhia tau hais tias lub tshuab hloov pauv yuav xav tau kev tshuaj xyuas tsawg kawg txhua peb mus rau rau lub hlis.

Saib rau txhua qhov pom tseeb ntawm kev hloov pauv ntawm cov windings uas yog ib qho cim ntawm overheating. Nqa ib daim duab ntawm cov windings thiab tshaj tawm ib qho kev hloov xim rau cov kws ua haujlwm cog.

 

2.2 Ntxuav Chav Tsev

Ceev faj:Rau kev nyab xeeb vim li cas, kev sib cuag lub cev nrog lub tshuab hloov pauv yuav tsum raug txo kom tsawg thaum lub sij hawm ntxuav txawm tias chav tsev tau de-energized, kaw tawm thiab hauv av.

Ntxuav cov plua plav lossis av los ntawm cov cua txias thiab cov kiv cua txias siv lub tshuab nqus tsev lossis cov cua compressed kom tsis txhob kov cov khoom. Pib los ntawm lub tshuab nqus tsev tawm ntawm qhov chaw ua raws li txau nrog cov cua qhuav compressed nrog lub siab tsis tshaj 20 mus rau 25 psi. Tsis txhob siv cov tshuaj ntxuav tes los ntxuav qhov chaw ntawm chav tsev.

Tshawb xyuas tag nrho cov de-kev sib txuas hluav taws xob uas muaj zog, nruj txhua yam khoom siv siv tau thiab hloov cov rwb thaiv tsev xoob lossis qhov chaw. Qhov no yuav tiv thaiv cov ntsia hlau lossis cov txiv ntoo los ntawm kev ua haujlwm xoob thaum lub sijhawm ua haujlwm tsis tu ncua.

 

2.3 Txheeb xyuas cov teeb meem muaj peev xwm lossis qhov tsis xws luag

Thaum tu lub transformer, saib rau xeb ntawm cov clamps thiab cov tub ntxhais hlau, txhua yam carbonization los yog taug qab ntawm windings thiab rwb thaiv tsev.

Tshawb xyuas cov windings thiab qhov chaw zoo dua rau kev hloov xim uas tuaj yeem yog ib qho kev qhia ntawm overheating los yog kev sib txuas xoob.

Txheeb xyuas qhov tawg, tawg lossis xoob insulators.

Tshawb xyuas qhov xoob, pitted, corroded lossis discolored hluav taws xob sib txuas.

Yog tias ua tau, nruj lossis hloov cov khoom siv kho vajtse; txwv tsis pub koj yuav tsum hu rau tus kws tshaj lij los ntsuas thiab kho lub tshuab hloov pauv.

Cov kiv cua, lub cev muaj zog thiab lwm yam khoom siv pabcuam yuav tsum tau tshuaj xyuas thiab tshuaj xyuas kom zoo.

Qhia tag nrho cov xwm txheej txawv txav lossis tsis txaus ntseeg hauv kev sau ntawv mus rau tus kws tshaj lij cog ntoo lossis tus thawj tswj hwm chaw, uas yuav txiav txim siab seb puas xav tau kev sim lossis kev pabcuam ntxiv ua ntej rov- txhawb lub zog.

 

3. Kev Xeem Thaum Lub Sijhawm Saib Xyuas Txhua Hnub

Thaum lub sijhawm ua haujlwm niaj hnub, ntau qhov kev sim ntawm lub tshuab hloov pauv tuaj yeem ua ntxiv rau kev tshuaj xyuas thiab tu. Kev ua tau zoo ntawm cov kev xeem no yog tswj hwm los ntawm NEC 450.11.11. Cov kev ntsuam xyuas no tsuas yog tsim nyog yog tias pom muaj xim, carbonization lossis lwm yam pov thawj ntawm overheating lossis luv luv. Lawv yuav txheeb xyuas qhov kev ua haujlwm raug ntawm chav tsev thiab tuaj yeem tshawb xyuas cov teeb meem uas tsis pom tseeb los ntawm kev tshuaj xyuas qhov muag. Kev ua tsis tiav ntawm ib qho kev xeem yuav tsum tau tshawb xyuas ntxiv thiab kev pabcuam ua ntej lub tsev yuav muab tso rau hauv kev pabcuam.

Cov kev ntsuam xyuas no tsuas yog yuav tsum tau ua thaum lub tshuab hloov pauv yog de-energized (disconnected los ntawm ob qho tib si lub hauv paus thiab theem nrab circuits) thiab rau kev nyab xeeb thiab raug lawv yuav tsum tau ua los ntawm ib tug tsim nyog engineers hnav khaub ncaws tiv thaiv thiab siv ib tug Megger (los yog sib npaug) cov khoom kuaj.

 

3.1 Transformer Turns Ratio (TTR)

Lub TTR ntsuas qhov xwm txheej ntawm transformer windings thiab core. Nws ntsuam xyuas seb qhov sib piv ntawm qhov hluav taws xob tiag tiag ntawm thawj thiab theem nrab windings (rau txhua theem thiab kais taw tes) pom zoo nrog daim ntawv teev npe lossis cov ntawv pov thawj. Lawv yuav tsum pom zoo nyob rau hauv  0.5% (NEC 450.11.2 & IEEC57.12.91.)

 

3.2 Insulation Resistance Test (IR)

IR ntsuas qhov ncaj ncees ntawm cov rwb thaiv tsev ntawm coil winding conductors. Txhua qhov ntsuas qhov ntsuas hluav taws xob muaj qhov tsawg kawg nkaus uas yuav tsum tau ntsuas ntsuas hauv Mega- Ohms. Kev nyeem hauv qab no qhia txog kev degradation ntawm lub zog dielectric. Qhov no yog ib qho kev ceeb toom ntawm lub peev xwm transformer tsis ua hauj lwm. (NEC 450.11.11.3)

 

3.3 Winding Resistance Test (WR)

Qhov ntsuas tsis kam ntawm cov coil windings rau txhua qhov hluav taws xob kais dej siv yuav tsum yog nyob rau hauv 1% ntawm lub Hoobkas kuaj tus nqi lossis qhov kev sim tsis ntev los no. (NEC 450/11.11.7)

Qhov kev tiv thaiv ib txwm muaj thiab winding tsis kam ntawm koj GNEE transformer tuaj yeem tau txais los ntawm cov ntaub ntawv muab nrog lub transformer, los yog hu rau GNEE ntawm 800-232-9002 thiab muab cov transformer serial tooj.

 

3.3 Lwm Cov Kev Xeem

Lwm yam kev kuaj mob xav tau cov cuab yeej tshwj xeeb thiab cov chaw, thiab yuav tsum tau ua cov kws tshaj lij kws tshaj lij.

GNEE ua ib qho kev xeem ntawv pov thawj ntawm txhua lub tshuab ziab khaub ncaws tshiab thiab sau cov txiaj ntsig hauv daim ntawv pov thawj uas xa nrog chav tsev. Yog tias koj muaj lus nug txog kev ntsuas kev ua tau zoo ntawm koj GNEE qhuav hom transformer lossis xav tau cov lus qhia txog kev kuaj mob ntxiv, hu rau GNEE ntawm 800-232-9002 thiab tham nrog ib tus ntawm peb cov kws ua haujlwm transformer.

 

Thov Ib Daim Quote

 

Tsis paub meej txog qhov yuav tsum tau muaj peev xwm/voltage ntawm qhuav -hom transformer rau koj qhov project? Xa koj cov kev cai thauj khoom thiab chaw teeb tsa, thiab GNEE engineers yuav muab ib qhodawb txoj kev npaj xaiv raugkom tsis txhob raug nqi pov tseg los ntawm kev xaiv tsis raug!

 

Rated peev (kVA)	Voltage sib xyaw			Tsis muaj -load tam sim no %	Tsis muaj -load poob (W)	Load poob (W)			Luv-circuit impedance %
	HV (kV)	Kev kub siab tapping	LV (kV)			B (100 degree)	F (120 degree)	H (145 degree)
50	35 36 37 38.5	±2x2.5% ±5	0.4	2.3	450	1340	1420	1520	6.0
100				2.0	630	1970	2090	2230
160				1.5	790	2650	2810	3000
200				1.5	880	3130	3320	3550
250				1.3	990	3580	3800	4060
315				1.3	1170	4250	4510	4820
400				1.1	1370	5100	5410	5790
500				1.1	1620	6270	6650	7110
630				1.0	1860	7250	7690	8230
800				1.0	2160	8600	9120	9760
1000				0.75	2430	9860	10400	11100
1250				0.75	2830	12000	12700	13600
1600				0.75	3240	14600	15400	16500
2000				0.75	3820	17200	18200	19500
2500				0.75	4450	20600	21800	23300