Tam sim no Transformers: Lawv Ua Haujlwm Li Cas thiab Cov Lus Qhia Kev Nyab Xeeb - Kev Paub

Yog tias koj tau siv txhua lub sijhawm nyob ib puag ncig lub tshuab hluav taws xob, hloov hluav taws xob, lossis txawm tias lub zog ntsuas hluav taws xob, koj yuav tau hnov txogtam sim no transformer(CT). Thiab yog- tib neeg feem ntau nug tib yam: tam sim no transformer nws ua haujlwm li cas thiab vim li cas nws tseem ceeb heev.

Thaum koj tau txais lub tswv yim yooj yim, txhua yam yuav tsis meej pem ntau. Cia peb rhuav nws hauv txoj kev uas xav tias nyeem tau tiag tiag.

A tam sim no transformeryog ib qho cuab yeej siv los ntsuastam sim no siab heevyam xyuam xim.

Tsis txhob txuas ib lub 'meter' ncaj nraim mus rau tus neeg xyuas pib nqa tam sim no loj (uas yuav txaus ntshai thiab feem ntau tsuas yog siv tsis tau), CTtxotam sim no mus rau ib tug me me, tus qauv tus nqi uas meters thiab tiv thaiv relays yuav lis.

yawei transformer

Yog li, xav txog ib txoj kab nqa hluav taws xob1,000 A. Ib qho CT tej zaum yuav nqis los kom koj lub meter tsuas pom5 A(los yog qee zaum1 A) nyob rau theem nrab. Ua li ntawd, cov cuab yeej ntsuas yuav nyob nyab xeeb, thiab tsis muaj leej twg yuav tsum tau cuam tshuam nrog cov dej ntws txaus ntshai.

Tam sim no rau qhov tseem ceeb: tam sim no transformer yuav ua li cas nws ua hauj lwm nyob ntawm seb lubthawjthiabtheem nrabqhov chaw sib cuam tshuam.

Covthawj windingtxuas nroghauv seriesnrog rau qhov tseeb load tam sim no. Hauv ntau CTs, "thawj" yog qhov yooj yim dua - feem ntau nws tsuas yog tus neeg xyuas pib nws tus kheej khiav los ntawm CT core.

Thaum AC ntws los ntawm lub hauv paus, nws tsim ib tug hloov magnetic teb nyob rau hauv lub CT core.

Vim hais tias cov magnetic teb hloov tas li (ua tsaug rau alternating tam sim no), nws induces ib tug tam sim no nyob rau hauv lub thib ob winding siv.electromagnetic induction.

Qhov thib ob tam sim no dhau los ua qhov ntsuas -down version ntawm thawj tam sim no, raws li CT tus piv.

Piv txwv li, a1000: 5 TSItxhais tau tias:

1,000 Antawm thawj sab →5 Anyob rau theem nrab

Thiab qhov ntawd yog qhov koj cov meters thiab relays siv los ntsuas tam sim no kom nyab xeeb thiab raug.

Feem ntau CTs tsis nyuaj, tab sis lawv muaj qhov tseem ceeb ua haujlwm ua ke:

Sib nqus core

Thawj tus neeg xyuas pib / winding

Secondary winding

Rwb thaiv tsev system

Terminal kev sib txuas

Cov tub ntxhais hlau nplaum yog qhov loj heev vim nws pab hloov cov hlau nplaum sib nqus tau zoo los ntawm thawj mus rau theem nrab thaum ua kom poob qis.

CTs tshwm sim txhua qhov chaw hauv cov tshuab hluav taws xob. Cov ntawv thov uas muaj xws li:

Kev ntsuas hluav taws xob thiab ntsuas hluav taws xob

Hluav taws xob tswj systems

Kev tiv thaiv overcurrent

Nrhiav tsis raug

Substations thiab switchgear

Industrial fais fab faib network

(Tam sim no Transformer Connections nyob rau hauv Fais Systems)

Yog tsis muaj CTs, ntsuas cov dej ntws loj ncaj qha yuav txhais tau tias siv cov cuab yeej uas muaj ntau dua, kim dua, thiab tsis muaj kev nyab xeeb.

Nov yog ib txoj cai uas koj yuav hnov dua thiab dua nyob hauv lub ntiaj teb tiag:

Tsis txhob tso lub CT thib ob winding qhib -circuited thaum lub hauv paus yog energized.

Yog tias qhov thib ob sab laug qhib, CT tuaj yeem tsimtxaus ntshai high voltages. Qhov ntawd tuaj yeem ua rau cov khoom puas tsuaj thiab tuaj yeem ua rau muaj kev nyab xeeb rau cov neeg ua haujlwm nyob ze.

Yog li thaum lub sij hawm txij nkawm los yog kev sim, CT thib ob circuits yuav tsum nco ntsoov:

txuas rau qhov tsim nyoglub nra, los yog

luv -circuitedraws li cov txheej txheem yuav tsum tau ua

Yeej: tsis txhob "tso nws ntab" tshwj tsis yog tias koj paub tseeb tias koj ua dab tsi.

Yog li yog- tam sim no transformer yuav ua li cas nws ua hauj lwm los ntawm qhov no: CT siv electromagnetic induction tig loj, txaus ntshai thawj tam sim no rau hauv me me, ntsuas theem nrab tam sim no.

Yog vim li cas CTs thiaj li tseem ceeb heev raukev soj ntsuam kom raug, txhim khu kev qha tiv thaiv, thiabhluav taws xob kev nyab xeebnyob rau hauv lub zog faib systems.

Yog tias koj xav tau, qhia kuv qhov twg koj siv CTs (metering? tiv thaiv relays? ib qho kev teeb tsa tshwj xeeb), thiab kuv tuaj yeem piav qhia txog kev xaim thiab kev sib piv hauv ib qho yooj yim ib yam nkaus.

Hu rau tam sim no

Q: Lub hom phiaj tseem ceeb ntawm transformer tam sim no yog dab tsi?

A: Lub hom phiaj tseem ceeb ntawm lub tshuab hluav taws xob tam sim no (CT) yog txhawm rau txo cov hluav taws xob hluav taws xob siab kom qis dua, tus nqi tsim nyog uas tuaj yeem ntsuas kev nyab xeeb los ntawm meters thiab tiv thaiv relays. Nws kuj tseem muab kev cais hluav taws xob ntawm qhov siab -voltage circuits thiab cov cuab yeej saib xyuas.

Q: Tam sim no transformer nws ua haujlwm li cas hauv lub zog hluav taws xob?

A: Lub tshuab hluav taws xob tam sim no ua haujlwm los ntawm kev siv electromagnetic induction. Thaum alternating tam sim no ntws los ntawm tus thawj neeg xyuas pib, nws tsim ib tug magnetic teb nyob rau hauv lub transformer core. Qhov no magnetic teb induces ib tug proportional tam sim no nyob rau hauv lub thib ob winding, tso cai rau high tam sim no ntsuas nyob rau hauv ib tug tsawg tsawg theem.

Q: Vim li cas thiaj li yuav tsum tsis txhob siv lub tshuab hluav taws xob tam sim no nrog qhib hluav taws xob thib ob?

A: Ib qho qhib hluav taws xob thib ob tuaj yeem ua rau CT tsim cov hluav taws xob txaus ntshai thoob plaws nws cov terminals. Qhov no tuaj yeem ua rau lub tshuab hloov pauv, cov khoom siv txuas nrog, thiab ua rau muaj kev nyab xeeb loj rau cov neeg ua haujlwm. Vim li no, qhov thib ob winding yuav tsum nyob twj ywm txuas nrog lub load lossis luv luv -circuited thaum tu.

Q: Qhov twg tam sim no transformers feem ntau siv?

A: Tam sim no transformers yog dav siv nyob rau hauv hluav taws xob substations, switchgear, industrial chaw, coj mus muag vaj tse, hluav taws xob faib network, thiab lub zog tswj systems. Lawv ua lub luag haujlwm tseem ceeb hauv kev ntsuas tam sim no, kev saib xyuas lub cev, thiab kev tiv thaiv hluav taws xob.