Muaj ntau ntau yam kev sim uas yuav ua tau ntawm transformers, txhua tus tsim los kom paub meej cov ntsiab lus ntawm cov cuab yeej muaj peev xwm ua tau raws li qhov xav tau. Feem ntau, cov kev ntsuam xyuas no tau muab faib ua ob pawg tseem ceeb, kev xeem niaj hnub thiab hom kev xeem. Cov kev ntsuam xyuas niaj hnub tau ua thaum lub sijhawm lossis tam sim ntawd tom qab cov txheej txheem tsim khoom thaum cov kev ntsuam xyuas hom tau ua tiav ntawm txhua hom kev hloov pauv kom ntseeg tau tias lawv ua tau raws li qhov xav tau tshwj xeeb.
Cov khoom xeem raws li hauv qab no;
1 - Insulation Resistance Test
Siv los ntsuas qhov rwb thaiv tsev tsis kam ntawm cov khoom siv transformer.
Siv HV DC ces ntsuas qhov tsis kam.
Qhia qhov xwm txheej ntawm rwb thaiv tsev.
2 - Insulation Resistance Test
Siv los ntsuas qhov sib piv ntawm cov transformer (Primary thiab Secondary Windings.
Siv qhov voltage ntawm winding ces ntsuas qhov voltage induced nyob rau hauv lwm winding.
Qhov feem pua ntawm cov voltages yog qhov sib piv ntawm cov thawj thiab theem nrab windings.
Kev xeem raug.
Sab hnub tuaj ua.
3 - Winding Resistance Test
Siv los ntsuas qhov tsis kam ntawm cov transformer windings (primary thiab secondary).
Ua tiav siv LV DC qhov chaw + Multimeter
4 - Polarity Test
Ua los xyuas qhov polarity ntawm transformer windings.
Siv DC qhov chaw rau thawj zaug ces ntsuas qhov hluav taws xob theem nrab.
Polarity ntawm windings txiav txim siab raws li cov kev taw qhia ntawm induced voltage nyob rau hauv lub thib ob winding.
5 - Qhib Circuit Test
Ua los txiav txim siab: Tsis muaj qhov poob, Magnetizing tam sim no
Khaws qhov thib ob qhib circuited ces siv qhov voltage ntawm thawj winding, ces ntsuas lub hauv paus (tam sim no thiab voltage)
Muab xam (Tsis muaj-Load Losses & Magnetizing Current).
Txiav txim siab qhov sib npaug Circuit Court ces calc Efficiency thiab Regulation
6 - Short Circuit Test
Ua tau los txiav txim:
Tag Nrho Tam Sim No.
Transformer impedance.
Khaws qhov thib ob luv luv circuited ces siv voltage rau thawj winding, ces
ntsuas qhov tseem ceeb (tam sim no thiab voltage).
Xam (Full-Load Current & Impedance).
Txiav Winding Resistance.
Txiav txim siab qhov dej inductance.
7 - Sweep Frequency Response Analysis (SFRA)
Kev ntsuas tsis muaj kev puas tsuaj siv los kuaj xyuas cov kev hloov pauv hauv lub tshuab hloov pauv tshuab
qauv.
Nws tuaj yeem ntes Winding Deformation lossis Shorted-Turns.
Nws ua rau kev ntsuam xyuas dav dav ntawm qhov kev hloov pauv hloov pauv
8 - Dissolved Gas Analysis Test (DGA)
Siv los txheeb xyuas qhov muaj cov roj combustible hauv cov roj transformer.
Tshawb xyuas ib qho piv txwv ntawm cov roj transformer kom paub txog kev hloov pauv ntawm cov roj concentration.
Nws tuaj yeem txheeb xyuas qhov ua txhaum cai ua ntej lawv dhau los ua teeb meem loj uas tso cai
kwv yees txij nkawm.
9 - Kev kuaj qhov tso tawm ib nrab
Siv los txheeb xyuas ib feem ntawm qhov paug tshwm sim nyob rau hauv lub rwb thaiv tsev transformer.
Siv HV rau lub transformer, tom qab ntawd ntsuas ib feem ntawm qhov tso tawm hauv qhov rwb thaiv tsev.
Muaj peev xwm txheeb xyuas qhov cuam tshuam ntawm rwb thaiv tsev ua ntej lawv ua rau muaj teeb meem loj rau lub transformer
10 - Dielectric Withstand Test
Siv HV rau lub transformer los ntsuas lub peev xwm ntawm rwb thaiv tsev kom tiv taus txhua qhov hluav taws xob
kev ntxhov siab.
Tshawb xyuas cov rwb thaiv tsev tsis muaj zog thiab uas ua rau peb ua kom muaj kev nyab xeeb thiab kev ntseeg tau ntawm
lub transformer.
11 - Thermal Imaging Test
Siv infrared imaging los xyuas qhov kub thiab txias gradients.
Nws tuaj yeem txheeb xyuas cov teeb meem xws li:
Loose kev sib txuas.
Overload Cheebtsam
Nws muab ib qho kev ntsuam xyuas uas tsis yog-invasive ntawm transformer mob
