Transformers raug rau cov kev xeem hauv qab no ntxiv nrog rau kev ntsuas rwb thaiv tsev. Txawm li cas los xij, cov tshuab ziab khaub ncaws qhuav yuav tsis raug cuam tshuam rau kev ntsuas roj thiab ntsuas cov kua dej vim qhov tseeb tias cov hom kev hloov pauv no feem ntau muaj cov roj av lossis cov khoom siv qhuav insulating nruab nrab. Cam khwb cia coil transformers, uas txhais tau tias yog transformers nrog high voltage coils cam khwb cia nyob rau hauv ib tug epoxy resin, kuj yuav tsis raug rau txhaum-gas tsom xam thiab insulating kua tsom xam vim lub fact tias cov tub ntxhais thiab coils ntawm no hom ntawm transformers tsis immersed. nyob rau hauv ib tug insulating kua. Cam khwb cia coil transformers raug suav hais tias yog hom qhuav-hom transformers.
A. Transformer hloov pauv-qhov sib piv thiab polarity xeem.
mus rau tus naj npawb ntawm lem nyob rau hauv lwm yam windings ntawm tib theem ntawm lub transformer. Kev kuaj polarity txiav txim siab vectorial kev sib raug zoo ntawm ntau yam transformer windings. Cov kev ntsuam xyuas no muaj feem xyuam rau tag nrho cov fais fab thiab faib transformers. Cast coil transformers kuj raug rau cov kev sim no. Kev ntsuas qhov ntsuas qhov sib piv thiab qhov ntsuas polarity tuaj yeem ua tiav ntawm cov hloov pauv ntawm txhua qhov ntau thiab tsawg. Kev ntsuas qhov ntsuas qhov sib piv yog feem ntau ua rau ntawm cov ntsuas ntsuas transformers. Cov khoom siv kuaj siv yuav ib txwm yog qhov ntsuas qhov ntsuas qhov ntsuas tau tsim rau lub hom phiaj, txawm hais tias, Yog tias tsis muaj, ob lub voltmeters lossis ob lub ammeters (rau tam sim no transformers nkaus xwb) tuaj yeem siv. Thaum siv ob lub AC voltmeters, ib qho yog txuas nrog high-voltage winding, thiab lwm qhov yog txuas nrog qis-voltage winding. Lub high-voltage winding zoo siab rau qhov voltage tsis tshaj qhov ntsuas ntawm lub voltmeter. Ob lub voltmeters tau nyeem ib txhij. Ib txheej thib ob ntawm kev nyeem ntawv yuav tsum tau coj nrog cov ntsuas ntsuas sib hloov. Cov txiaj ntsig tau qhia yuav tsum tau nruab nrab los suav qhov piv. Kev ntsuas qhov muaj txiaj ntsig zoo yuav ua tau siv tsuas yog ob peb volts ntawm excitation. Lub transformer yuav tsum tau zoo siab los ntawm lub siab tshaj plaws voltage winding kom tsis txhob muaj tej zaum tsis zoo siab voltages. Kev saib xyuas yuav tsum tau ua thaum lub sij hawm siv qhov hluav taws xob thiab kev ntsuas. Nws yog ib qho tseem ceeb uas yuav tsum tau nyeem ib txhij rau ob qho tib si voltmeters. Cov voltmeters siv yuav tsum muaj qhov tseeb piv rau qhov yuav tsum tau ua ntawm 0.5% piv piv. Thaum ua tiav qhov ntsuas qhov sib piv, qhov sib piv yuav tsum tau txiav txim siab rau txhua qhov tsis muaj cov kais dej. Yog hais tias lub transformer yog nruab nrog ib tug load-kais changer, qhov ratio yuav tsum tau txiav txim rau txhua load-kais changer txoj hauj lwm.
B. Fault-gas tsom xam.
Kev tsom xam ntawm feem pua ntawm cov roj hluav taws xob tam sim no nyob rau hauv lub hau nitrogen ntawm kaw, cov roj puv roj hloov pauv tuaj yeem muab cov ntaub ntawv hais txog qhov tshwm sim ntawm qhov ua txhaum ntawm qhov hloov pauv. Fault-gas tsom xam yuav ua tau nyob rau hauv mineral-roj-immersed transformers ntawm txhua qhov ntau thiab tsawg. Thaum arcing lossis cua kub ntau dhau tshwm sim hauv qab saum npoo ntawm cov roj, qee cov roj decomposes. Qee cov khoom ntawm cov decomposition yog combustible gases uas nce mus rau saum cov roj thiab sib tov nrog nitrogen saum cov roj. Cov txheej txheem rau kev xeem no yog tsim los rau lub hom phiaj. Ib qho piv txwv me me ntawm nitrogen raug tshem tawm ntawm lub transformer thiab soj ntsuam.
C. Insulating-kua tsom xam.
Insulating-kua tsom xam yuav ua tau nyob rau hauv daim teb ntawm roj-immersed fais fab transformers ntawm txhua qhov ntau thiab tsawg.