Qhuav hom transformersyog cov cuab yeej tseem ceeb hauv lub zog hluav taws xob. Lub rwb thaiv tsev kev ua tau zoo ntawm qhuav-hom transformers ncaj qha cuam tshuam rau kev ua haujlwm ruaj ntseg thiab ruaj khov ntawm qhov system. Kev ntsuas hluav taws xob tiv thaiv hluav taws xob yog ib qho tseem ceeb los ntsuas qhov kev ua haujlwm ntawm rwb thaiv tsev ntawm transformers. Los ntawm kev soj ntsuam cov rwb thaiv tsev tsis tu ncua, muaj peev xwm rwb thaiv tsev faults tuaj yeem tshawb pom nyob rau lub sijhawm kom ntseeg tau tias kev ua haujlwm ruaj ntseg thiab ruaj khov ntawm lub zog hluav taws xob. Cov hauv qab no yog txoj kev sim rau kev rwb thaiv tsev ntawm cov tshuab ziab khaub ncaws qhuav:
I. Cov cuab yeej thiab cov cuab yeej yuav tsum tau muaj
Cov cuab yeej thiab cov cuab yeej hauv qab no yuav tsum muaj rau kev ntsuas kev tiv thaiv hluav taws xob ntawm cov tshuab ziab khaub ncaws qhuav:
◇ Rwb thaiv tsev tiv thaiv tester:siv los ntsuas tus nqi rwb thaiv tsev tiv thaiv.
◇ Fais fab mov:Muab qhov voltage xav tau rau kev xeem.
◇ Multi-purpose meter:siv los ntsuas qhov voltage thiab tam sim no (yeem).
II. Kuaj cov kauj ruam
Disconnect lub hwj chim mov:Ua ntej disconnect lub hwj chim mov ntawm lub transformer thiab xyuas kom meej tias lub transformer nyob rau hauv lub hwj chim-off xeev.
Ntxuav qhov chaw:Ntxuav qhov chaw ntawm lub transformer kom paub meej tias nws tsis muaj plua plav thiab tsis muaj kuab paug.
Txuas cov kab xeem:Txuas cov kab xeem ntawm cov rwb thaiv tsev tiv thaiv tester rau high-voltage winding thiab av xaim, low-voltage winding thiab av xaim ntawm transformer, thiab xyuas kom meej tias qhov kev sib txuas ruaj khov.
Teem lub tester:Tig lub rwb thaiv tsev tiv thaiv tester thiab xaiv hom kev sim tsim nyog thiab qhov hluav taws xob ntau. Feem ntau, qhov ntsuas hluav taws xob yog 500V lossis 1000V.
Siv qhov ntsuas voltage:Siv qhov ntsuas hluav taws xob thiab tos ib ntus (feem ntau 1 feeb) kom tso cai rau lub rwb thaiv tsev kom ruaj khov.
Nyeem cov txiaj ntsig:Nyeem cov txiaj ntsig ntawm kev ntsuas hluav taws xob tiv thaiv hluav taws xob.
Disconnect tus kab xeem:Tom qab qhov kev xeem tiav lawm, txiav txoj kab xeem kom xaus qhov kev xeem.
III. Cov kev ceev faj
Kev nyab xeeb grounding:Ua ntej ua qhov kev ntsuas kev tiv thaiv hluav taws xob, koj yuav tsum xyuas kom meej tias lub tshuab hloov hluav taws xob raug kaw thiab qhov ntsuas ntsuas tau zoo.
Ib puag ncig qhuav:Thaum lub sij hawm kuaj, ua kom qhov chaw kuaj kom qhuav kom tsis txhob ya raws los yog to.
Unit conversion:Thaum nyeem cov txiaj ntsig kev xeem, ua tib zoo saib xyuas qhov hloov dua siab tshiab thiab suav qhov tseeb ntawm cov units.
Rov kuaj dua:Yog tias cov txiaj ntsig kev xeem tsis txawv txav, yuav tsum rov kuaj xyuas kom ntseeg tau tias cov txiaj ntsig tau raug thiab ntseeg tau.
Kho qhov kub thiab txias:Yog tias qhov ntsuas tsis tau ua tiav ntawm 20 degree, qhov ntsuas kub yuav tsum tau siv los kho.
IV. Cov qauv ntsuas
Raws li cov qauv thoob ntiaj teb thiab cov kev qhia tshwj xeeb hauv tsev, cov txiaj ntsig kev ntsuas ntawm cov rwb thaiv tsev tsis kam ntawmqhuav hom transformersyuav tsum ua tau raws li tej yam kev cai. Feem ntau, cov nqi hluav taws xob tiv thaiv yuav tsum siab dua 100MΩ kom ntseeg tau tias qhov kev ua haujlwm zoo ntawm lub tshuab hloov pauv. Yog tias qhov ntsuas tau qis dua tus nqi no, nws txhais tau hais tias lub tshuab hloov pauv yuav muaj kev puas tsuaj los yog puas tsuaj thiab yuav tsum tau kho lossis hloov.
V. Test Piv txwv
Siv 35kV qhuav-hom transformer ua piv txwv. Nyob rau hauv nws cov kev tiv thaiv kev ntsuas, qhov siab voltage mus rau qis voltage thiab hauv av, tsawg voltage mus rau high voltage thiab hauv av, thiab hlau core rau hauv av yog tag nrho cov ntsuas nrog ib tug 2500V megohmmeter, thiab lub sij hawm ntsuas tsis tsawg tshaj li 1 feeb. Cov kauj ruam xeem yog raws li nram no:
Cov khoom siv cais tawm:Tshem tawm tag nrho cov khoom xa tuaj thiab tawm, thiab xyuas kom meej tias qhov sib txawv ntawm lub cable thiab lub txee hloov lub rooj dav hlau loj dua qhov kev nyab xeeb.
Kev kho av:Xyuas kom meej tias lub thawv transformer thiab hlau core yog grounded.
Kev kho luv luv Circuit Court:Short-circuit tag nrho winding terminals ntawm tib theem voltage ua ke.
Kev ntsuas ntsuas:Ua 1 feeb tsis kam ntsuas ntawm txhua pawg winding thiab lwm yam windings thiab hauv av.
Cov ntawv sau tseg:Sau cov txiaj ntsig kev ntsuas thiab ua qhov ntsuas kub (yog tias tsim nyog).
Tsim nyog tus qauv:High voltage winding to low voltage and ground ≥3000MΩ, low voltage winding to high voltage and ground ≥600MΩ, iron core to ground ≥2MΩ. When the value of the insulation resistance of the winding to the ground at 60 seconds is R60≤3000MΩ, the absorption ratio k needs to be calculated. When k>1.3, nws yog tsim nyog.
VI. Kuaj lub voj voog
Kev ntsuas lub voj voog ntawm cov rwb thaiv tsev ntawm lub tshuab ziab khaub ncaws yuav tsum tsis pub tshaj 3 xyoos, thiab yuav tsum tau ua ua ntej thiab tom qab kho dua, tom qab tsis muaj qhov hloov pauv hloov kais dej, lossis thaum tsim nyog. Ua ntej qhov kev ntsuam xyuas, qhov ntsuas kub ntawm lub transformer yuav tsum tau ntsuas nrog lub ntsuas kub infrared, thiab qhov ntsuas yuav tsum tau ua thaum lub cev kub nyob ze rau ntawm qhov ntsuas kub (qhov txawv tsis tshaj ± 5 degree).
VII. Cov ntsiab lus
Kev ntsuas hluav taws xob tiv thaiv ntawmhom qhuav transformeryog ib txoj hauv kev tseem ceeb los ntsuas qhov kev ua haujlwm ntawm rwb thaiv tsev ntawm lub transformer. Cov txiaj ntsig kev xeem raug thiab txhim khu kev qha tuaj yeem tau txais los ntawm cov kauj ruam xeem kom raug thiab ceev faj. Kev tshawb pom raws sij hawm thiab kev daws teeb meem ntawm kev cuam tshuam ntawm rwb thaiv tsev tuaj yeem ua kom lub cev ua haujlwm ntawm lub tshuab hloov pauv thiab txuas nws lub neej kev pab cuam. Yog li ntawd, nws raug nquahu kom ua cov kev ntsuas kev tiv thaiv hluav taws xob ntawm cov tshuab hluav taws xob qhuav tsis tu ncua raws li cov qauv kev sim thiab cov kev xav tau los xyuas kom muaj kev nyab xeeb thiab ruaj khov ntawm lub zog hluav taws xob.
Jiangsu Yawei tiav Electric Co., Ltd. tshwj xeeb hauv kev muab ntau yam kev nyab xeeb, txuag hluav taws xob thiab txuag hluav taws xob qhuav-hom transformers. Yog tias koj muaj kev xav tau, thov koj xav tiv tauj kuv.
Email: luna@yawei-electric.com
WhatsApp: +86 15206275931
