Dab tsi yog qhov lem piv ntsuas?

Tig piv ntsuas kev ntsuashais txog cov txheej txheem ntawmtxiav txim siab qhov sib piv ntawm tus naj npawb ntawm cov lem ntawm thawj winding (np) rau tus naj npawb ntawm lem hauv theem ob (NS) ntawm transformer. Qhov sib piv no (NP / NS) yog qhov ua haujlwm rau kev hloov pauv, dicefation volformage thiab tam sim no.

Vim li cas nws tseem ceeb?

Kev hloov pauv hluav taws xob:Ncaj qha txiav txim siab tus qauv voltage-up / theem-down piv (VP / vs ≈ np / ns).

Kev hloov pauv tam sim no:Inversely ntsig txog qhov kev piv tam sim no (IP / yog ≈ ns / np) .

Tsim & Tshawb Nrhiav:Tseem ceeb rau kev tsim qauv hloov pauv thiab kev ua kom pom tseeb tsim cov khoom tseeb .

Txhaum Nrhiav Kom Tau:Kev sib txawv los ntawm kev xav tau qhia qhov ua txhaum zoo li luv lem, qhib kev sib txuas, lossis cov kev sib txuas tsis raug ({0}}

Yuav ntsuas npaum li cas (cov hau kev tswv yim)?

Txij li ncaj qha suav ntau txhiab leej ntawm lem yog impractical, tig sib piv yogmuaj nqislos ntawm kev ntsuas tusVoltage PivRaws li cov xwm txheej tshwj xeeb:

Voltage piv txoj kev (sib npaug & siv tau):

Lub hauv paus ntsiab lus:Hauv qabTsis muaj-thauj khoomthiab nrognegligutle poob, lub voltage piv (VS) yog kwv yees li ntawm tig ratio (NP / ns) .

Khoom siv:Cov sib txawv AC Voltage Tau qhov twg los (zoo li tus voliac), ob qho tseeb ac voltmeters (lossis ib tug dual-channel dmm) .

Tus txheej txheem:

Tawm ntawm ob qho kev sib tsooqhib-ncig(tsis muaj load) .

Thov ATsawg, muaj kev nyab xeeb AC Volfage(Bine hauv qab no siv voltage) rau lub xub ntiag siv variac .Siv cov hluav taws xob qis tiv thaiv cov tseem ceeb surmation .

Ntsuas cov ntawv siv voltage thawj (vp) thiab lub txiaj ntsig qhib-Circuitual thib ob voltage (vs) ib txhij.

Xam covHloov Ratio (Tr):Tr=vp / vs

(Yeem):Rov ua dua ntawm qhov chaw tsis tshua muaj zog voltages kom paub meej tias muaj kev paub meej .

Qhov tshwm sim:Qhov ntsuas vp / vs tau tshaj tawm raws li qhov hloov pauv (e {.}}}}}} {{{8} {8}

Dedformer transformer hloov piv (TTR) tester:

Lub hauv paus ntsiab lus:Cov twj paj nruag tshwj xeeb no siv hluav taws xob ntsuas lub ntsuas hluav taws xob nrog cov ntsuas siab thiab feem ntau suav nrog kev kuaj mob ntxiv .

Tus txheej txheem:

Txuas cov tester ua rau tus thawj thiab lub hnub nyoog qis dua .

Tus tester cia li siv tau ib qho qes A ACT voltage .

Nws meej ntsuas vp thiab vs .

Nws suav thiab qhia txog qhov kev sib tw ntau zaus, feem pua ​​sib txawv ntawm cov nominal, lossis lub kaum sab xis) .

Qhov Zoo:

Siab dua qhov tseeb thiab daws teeb meem .

Kev ntsuasTHEEM DOUNGGLEnruab nrab ntawm VP thiab VS (yuav tsum tau ze heev rau 0℃lossis 180 degree; kev sib txawv; {2}

Kev suavFeem pua ​​piv txwv yuam kev(% {{{= [(ntsuas tr - ntaus nqi tr) / ntsuas tr] / (ntsuas tr]) * 100).

Kev nyab xeeb dua thiab nrawm dua phau ntawv txoj kev .

Qhov tseem ceeb tshaj plaws & vim li cas voltage piv ≈ hloov putio (nyob rau hauv cov xwm txheej)

Tsis muaj kev thauj khoom:Tshem tawm cov voltage poob tshwm sim los ntawm kev thauj khoom tam sim no ntws mus los ntawm cua tsis kam thiab to reasing .

Tsawg thov voltage:Minimizes cov haujlwm poob (hysteresis thiab eddy tam sim no) uas tuaj yeem ua rau muaj kev sib txawv me me ntawm VP / vs thiab NE6 0} poob yog negligible {}}

Negertigible Magnetizing tam sim no:Qhov me me tau kos los tsim Flux tsim lub voltage me me hauv voltages siv tsis muaj .

Dab tsi ua rau tsis sib xws?

Luv lem:Txawm tias ib qho luv luv tig ntog txo cov txiaj ntsig zoo tig piv rau ntawm .

Qhib kab laum:Txwv tsis pub cov ntsuas hluav taws xob voltage ntawm qhov qhib winding .

Cov kev sib txuas tsis raug:Cov kais tsis ncaj ncees lawm xaiv tau, tsis paub meej windings .

Core Saturation:(Yog tias kev sim voltage dhau lawm) distorts lub voltage waveform thiab invalidates qhov sib txuam yooj yim {}}

Ntau winding tsis kam / so athile:(Tsawg dua qhov tseem ceeb nyob rau hauv tsis muaj-load / qis voltage kuaj, tab sis tuaj yeem ua yuam kev me me).

Hauv cov ntsiab lus

Tig kev ntsuas ntsuas yog cov txheej txheem ntawm kev txiav txim siab qhov sib piv ntawm tus thawj zaug tig (NP / NS) hauv lub transformer {} txij li kev suav ncaj qha tsis yooj yim sua, nws uatsis ncaj qha los ntawm kev ntsuas qhov ntsuas kom qhib-Circuit Court sib piv sib piv (VP / vs) ntawm qhov kev loj heev voltage, qhov twg vp / vs ≈ np / nps . Qhov no yog qhov tseem ceeb tshaj plaws siv cov kev ua tau zoo (TTR) TESDING ANTIONS thiab kuaj pom kev ua txhaum cai thiab tshawb xyuas qhov tsis raug zoo.