Cov Txheej Txheem Thiab Txoj Cai Ntawm Rwb Thaiv Tsev Nrog Voltage Tester

Kev tshawb nrhiav txoj cai
Piv nrog rau lub ntsiab rwb thaiv tsev ntawm lub transformer, uas yog, lub rwb thaiv tsev ntawm windings thiab nruab nrab ntawm windings thiab hlau core, transformer muaj lwm yam tseem ceeb rwb thaiv tsev kev ua tau zoo qhia - longitudinal rwb thaiv tsev. Longitudinal rwb thaiv tsev hais txog cov rwb thaiv tsev ntawm cov ntsiab lus sib txawv thiab qhov sib txawv ntawm cov transformer winding nrog cov peev txheej sib txawv, feem ntau suav nrog kev ua haujlwm rwb thaiv tsev ntawm lem, txheej thiab ntu ntawm winding. Qhov "induction withstand voltage test" teev nyob rau hauv lub teb chaws cov qauv thiab International Electrotechnical Commission (IEC) cov qauv yog ib qho ntawm cov kev xeem uas tshwj xeeb yog siv los ntsuas qhov ntev ntawm rwb thaiv tsev kev ua tau zoo ntawm lub transformer.
Qhov ntev ntawm cov rwb thaiv tsev ntawm lub transformer feem ntau yog nyob ntawm qhov nruab nrab insulating nyob rau hauv winding - insulating xim ntawm enameled hlau nws tus kheej, transformer roj, insulating ntawv, impregnating xim thiab insulating kua nplaum, thiab lwm yam. media); Nws yog ib qho nyuaj los xyuas kom meej 100% purity ntawm longitudinal insulating dielectric, thiab nws yog ib qho inevitable uas nws muaj cov khoom impurities, npuas los yog ya raws, thiab lwm yam., thiab nws kuj yuav raug puas tsuaj mus rau txawv degrees thaum lub sij hawm tsim khoom; lub siab tshaj plaws lub zog thaum lub transformer ua hauj lwm yog concentrated ntawm cov tsis xws luag, thiab qhov kub thiab txias ntawm lub sij hawm ntev load ua hauj lwm yuav txo tau lub breakdown voltage ntawm lub insulating nruab nrab, ua rau ib nrab paug. Lub zog absorbed los ntawm dielectric los ntawm sab nraud alternating hluav taws xob teb, uas yog, lub dielectric poob, yuav ua rau kom loj, uas ua rau cov cua kub loj ntawm lub dielectric thiab nce dielectric conductivity. Cov tam sim no loj nyob rau hauv qhov no tseem yuav ua kom muaj cua sov, uas yuav ua rau kom qhov kub thiab txias ntawm dielectric, thiab qhov kub thiab txias yuav ua rau kom cov conductivity ntawm dielectric. Xws li lub voj voog mus sij hawm ntev yuav ua rau lub thermal tawg ntawm lub dielectric thiab kev puas tsuaj ntawm tag nrho cov transformer. Qhov kev ua txhaum no tau tshwm sim nyob rau hauv cov yam ntxwv ntawm lub transformer, uas yog, tsis muaj-load tam sim no thiab tsis muaj-load hwj chim noj nce, thiab winding muaj undesirable phenomena xws li hlawv, arcing, vibration thiab howling. Nws tuaj yeem pom tau tias nws yog qhov tsim nyog yuav tsum tau siv qhov induction tiv thaiv qhov ntsuas hluav taws xob txhawm rau txheeb xyuas seb lub tshuab hloov pauv puas muaj qhov cuam tshuam ntev ntawm cov rwb thaiv tsev.