Kev kuaj xyuas qhov txhaum thiab kev daws teeb meem ntawm DP Tam sim no Transformer (xws li qhib, kaw lossis siab precision transformer) yuav tsum tau ua raws li kev tshawb nrhiav thiab hauv cheeb tsam raws li cov yam ntxwv ntawm cov qauv thiab kev ua haujlwm ntawm transformer. Nov yog ib kauj ruam -los ntawm- kauj ruam sim thiab tackle lub tswv yim:
1, Fault detection method
1.Qhov tshwm sim thiab kev kuaj ua ntej
Txheeb xyuas qhov xwm txheej ntawm kev teeb tsa:
Xyuas kom tseeb tias lub tshuab hloov pauv tau kaw tag nrho (xyuas tias lub kaw lus kaw thaum qhib thiab kaw) kom tsis txhob teeb liab poob vim kev sib cuag tsis zoo.
Xyuas tias tus neeg xyuas pib hauv lub qhov rais yog nruab nrab. Offset tuaj yeem ua rau asymmetry hauv cov hlau nplaum sib nqus, ua rau kev ntsuas qhov yuam kev lossis saturation.
Saib lub plhaub thiab thaiv kab:
Tshawb xyuas cov kab nrib pleb thiab hlawv cov cim ntawm bushing uas yuav ua rau muaj kev puas tsuaj rau rwb thaiv tsev vim overload los yog luv luv Circuit Court.
Paub meej tias seb lub davhlau ya nyob twg thib ob yog xoob lossis oxidized, raws li kev sib cuag tsis zoo qhia txog kev tiv thaiv ntxiv thiab cuam tshuam rau qhov tseeb ntawm lub teeb liab.
2.Kev kuaj xyuas hluav taws xob
Secondary lateral circuit detection:
Phenomenon: When a secondary lateral opening is made, the magnetic flux density of the iron core increases dramatically, which can generate high pressure (up to several thousand volts), causing the transformer to heat up, make abnormal noises and even burn out.
Kev kuaj xyuas txoj kev:
Ntsuas qhov kev tiv thaiv theem nrab nrog lub multimeter. Yog hais tias nws yog infinite (qhib) los yog zoo tshaj qhov ntsuas, tua lub hwj chim tam sim ntawd.
Saib xyuas yog tias lub tshuab hluav taws xob tsis hnov tsw ntawm cov cua kub txawv txav los yog kub hnyiab los pab txiav txim siab qhov chaw qhib.
Rwb thaiv tsev Resistance Test:
Lub Hom Phiaj: txhawm rau txheeb xyuas qhov kev ua tau zoo ntawm kev rwb thaiv tsev ntawm cov thawj winding thiab thib ob winding thiab nruab nrab ntawm winding thiab lub plhaub.
Txoj kev:
Tus qauv megohmmeter qhov tseem ceeb feem ntau yog ntau dua lossis sib npaug rau 100M Ω (saib Cov Khoom Siv Taw Qhia kom paub meej).
Yog tias cov rwb thaiv tsev tsis kam poob qis, nws tuaj yeem xau los ntawm cov av noo, kev laus lossis kev puas tsuaj thiab tej zaum yuav xav tau kev ziab ntxiv lossis hloov.
Kev ntsuas qhov sib piv thiab polarity:
Variable ratio test:
Cov zis tam sim no ntawm ob sab yog ntsuas los ntawm caliper thiab qhov kev hloov pauv tiag tiag (thib ob tam sim no / thawj qhov tam sim no) yog xam los ntawm kev siv lub npe tam sim no (piv txwv li, 5A) rau thawj sab.
Yog tias qhov hloov pauv tiag tiag yog ntau dua 5% sib txawv ntawm tus nqi nominal, nws yuav yog vim muaj qhov saturation ntawm cov tub ntxhais hlau, luv luv ntawm winding lossis Circuit Court cua sib txawv ntawm magnetic circuit.
Kev xeem polarity:
Cov theem kev sib raug zoo ntawm cov thawj thiab theem nrab tam sim no raug txheeb xyuas los ntawm cov ntsuas tam sim no ncaj qha lossis theem ntsuas kom paub meej qhov tseeb polarity (feem ntau yog depolarization).
Polarity yuam kev yuav ua rau muaj kev ua haujlwm tsis zoo ntawm cov cuab yeej tiv thaiv lossis kev thim rov qab ntawm cov ntaub ntawv ntsuas, yuav tsum tau rov ua dua.
3. Kev saib xyuas kev ua haujlwm
Load Tam sim no Analysis:
Qhov thib ob tam sim no lub waveform ntawm transformer yog kaw los ntawm backend system los yog portable ntsuas, thiab cov distortion, harmonic los yog transient overload ntawm transformer yog pom.
Yog hais tias qhov tam sim no waveform yog distorted heev, nws yuav yog vim lub me me cross-section khoom ntawm thawj tus neeg xyuas pib, tsis txaus transformer muaj peev xwm los yog muaj ib tug muaj zog cuam tshuam qhov chaw nyob ze.
Kev ntsuas kub:
Qhov kub thiab txias ntawm transformer yog saib xyuas los ntawm infrared tus pas ntsuas kub los yog kub sensor. Thaum lub sijhawm ua haujlwm ib txwm, qhov kub nce yuav tsum tsawg dua 65℃(thaum qhov kub thiab txias yog 40 degree).
Yog tias qhov kub thiab txias yog qhov txawv txav, nws yuav yog vim muaj ntau dhau, nce cov tub ntxhais hlau poob lossis tiv thaiv kev tiv thaiv ntau dhau, yuav tsum tau txo qis lossis kev saib xyuas tam sim.
2, Kev ua yuam kev thiab kev daws teeb meem.
1. Ob sab qhib;
Yog vim li cas: xoob xaim, tib neeg yuam kev, los yog internal transformer disconnection.
daws:
Txiav tawm lub hwj chim tam sim ntawd thiab siv cov cuab yeej insulating toshort Circuit Court (luv ua ntej, ces qhov txhaum point) kom tsis txhob muaj hluav taws xob siab.
Txheeb xyuas tias cov hlua txuas txuas yog xoob, nruj dua thiab siv cov khoom siv hluav taws xob; Yog tias muaj kev cuam tshuam sab hauv, lub transformer yuav tsum tau hloov.
2. Kev ntsuas yuam kev tshaj li cov qauv
Yog vim li cas:
Core saturation (tam sim no los yog zaus sib txawv tshaj qhov ntsuas tus nqi).
Sib nqus Circuit Court cua qhov sib txawv (qhib los yog kaw los yog mounted offset).
Secondary load yog loj heev (ntev thaiv, siab load impedance).
daws:
Kho qhov tam sim no ib zaug rau qhov ntsuas qhov ntsuas kom tsis txhob ntev - lub sij hawm overload.
Reinstall lub transformer los xyuas kom meej tias tus neeg xyuas pib hauv lub qhov rais yog qhov nruab nrab thiab lub clasp yog fastened.
Txo qhov ntev ntawm kev sib txuas theem nrab thiab txo cov load impedance (piv txwv li, los ntawm kev siv cov cuab yeej impedance tsawg).
3. Txo kev ua haujlwm rwb thaiv tsev
Qhov ua rau: Cov txheej rwb thaiv tsev puas vim cov av noo, kev laus lossis kev puas tsuaj.
daws:
Me ntsis ntub qhuav transformers (xws li cua kub circulating ncu, Tsawg tshaj los yog sib npaug rau 80℃).
Yog tias cov rwb thaiv tsev tsis tuaj yeem rov qab los, lub tshuab hloov pauv yuav tsum tau hloov thiab xyuas qhov chaw teeb tsa (xws li kom tsis txhob muaj av noo thiab corrosive gases).
4. Tsis muaj suab nrov lossis kev co
Yog vim li cas: xoob hlau tub ntxhais, asymmetric sib nqus Circuit Court, los yog kev co hloov ntawm thawj tus neeg xyuas pib.
daws:
Tighten lub fastening bolts ntawm cov tub ntxhais hlau kom tshem tawm txhua yam looseness.
Reinstall transformer kom ntseeg tau tias kev sib txuas tsis zoo rau tus neeg xyuas pib thiab txo qis kev sib kis.
Yog hais tias qhov txawv txav tsis tu ncua, nws yuav yog vim qhov luv luv ntawm cov txheej txheem ntawm cov hlau core silicon steel ntawv, uas yuav tsum tau rov qab mus rau lub Hoobkas kho.
3. Cov lus qhia txog kev tiv thaiv kev saib xyuas.
Kev tshuaj xyuas ib ntus: Txheeb xyuas qhov pom ntawm lub tshuab hluav taws xob, xaim, kev ua haujlwm thiab cov ntaub ntawv ntsuas kub thiab thauj khoom tam sim no ib zaug hauv peb lub hlis twg.
Kev tu thiab tu: Siv cov ntaub mos mos qhuav kom tshem tawm cov plua plav tawm ntawm lub plhaub thiab tsis txhob siv cov tshuaj detergents kom corrode lub rwb thaiv tsev.
Kev tswj hwm kev thauj khoom: xyuas kom meej tias qhov kev thauj khoom thib ob tsis tshaj qhov ntsuas qhov peev xwm (feem ntau yog 5VA txog 30VA) kom tsis txhob ntev - lub sijhawm dhau.
Kev tswj ib puag ncig: ntsia rau hauv qhov dej- qhov cua qhov chaw uas tsis muaj zog electromagnetic cuam tshuam kom tsis txhob muaj qhov kub thiab txias, av noo lossis ib puag ncig corrosive.