Lub transformer AC withstand voltage test yog ib qho kev sim uas ib tug sinusoidal zog zaus AC test voltage tshaj ib tug tej yam ntau yam ntawm cov rated voltage yog siv rau windings ntawm lub transformer kuaj ua ke nrog lub bushing, thiab lub sij hawm yog 1 min.Nws lub hom phiaj yog siv qhov ntsuas hluav taws xob siab dua li qee qhov ntau yam ntawm cov ntsuas hluav taws xob los hloov cov atmospheric overvoltage thiab sab hauv overvoltage los ntsuam xyuas cov rwb thaiv tsev ntawm lub transformer.Nws yog ib txoj hauv kev zoo los txheeb xyuas lub zog rwb thaiv tsev ntawm transformers, thiab tseem yog ib qho tseem ceeb ntawm kev sim ua kom ntseeg tau tias kev ua haujlwm ruaj ntseg ntawm transformers thiab tsis txhob muaj kev sib tsoo.Kev ntsuas AC tiv taus qhov ntsuas hluav taws xob tuaj yeem pom cov dej noo thiab cov ntsiab lus tsis zoo hauv lub tshuab hluav taws xob lub ntsiab rwb thaiv tsev, xws li winding lub ntsiab rwb thaiv tsev tawg, winding loosening thiab tshem tawm, cov hlau lead rwb thaiv tsev deb tsis txaus, thiab cov rwb thaiv tsev ua raws li qhov tsis xws luag xws li av.
HV Hipot GDTF series cable zaus hloov dua siab tshiab series resonance withstand voltage xeem ntaus ntawv
AC withstand voltage test yog ib qho kev puas tsuaj hauv kev ntsuas hluav taws xob.Nws yuav tsum raug kuaj tom qab lwm qhov kev ntsuam xyuas tsis muaj kev puas tsuaj (xws li rwb thaiv tsev tiv thaiv thiab kev nqus qhov sib piv, DC to test, dielectric poob kho qhov txiav thiab ntsuas roj insulating) yog tsim nyog..Tom qab qhov kev xeem no tsim nyog, lub transformer tuaj yeem muab tso rau hauv kev ua haujlwm.AC tiv taus qhov ntsuas hluav taws xob yog qhov ntsuas tseem ceeb.Yog li ntawd, cov kev cai tiv thaiv kev xeem tau teev tseg tias lub transformer nrog 10kV thiab hauv qab no, nyob rau hauv 1 ~ 5 xyoo, 66kV thiab hauv qab no, yuav tsum raug rau AC withstand voltage tom qab overhaul, tom qab hloov windings thiab thaum tsim nyog kuaj.
Kev sim
(1) Kev ntsuas hluav taws xob me me thiab nruab nrab lub zog hluav taws xob hauv qab 35kV yog siv nrog AC tiv thaiv hluav taws xob ntsuas hluav taws xob.Tag nrho cov windings yuav tsum tau kuaj.Thaum lub sij hawm xeem, cov hlau lead ntawm txhua theem winding yuav tsum luv luv-circuited ua ke.Yog tias qhov nruab nrab ntawm qhov nruab nrab muaj cov hlau lead, cov hlau lead yuav tsum tau luv luv nrog peb theem.
(2) Kev ntsuas qhov ntsuas hluav taws xob Cov qauv ntsuas kev xa tawm tau teev tseg tias cov khoom siv hluav taws xob muaj peev xwm qis dua 8000kV thiab qhov ntsuas hluav taws xob qis dua 110kV yuav tsum raug rau AC tiv thaiv qhov ntsuas hluav taws xob raws li cov qauv ntsuas hluav taws xob tau teev tseg hauv Cov Ntawv Ntxiv 1 ntawm tus qauv.Kev tiv thaiv kev xeem cov cai teev tseg: Qhov ntsuas qhov ntsuas hluav taws xob ntawm cov roj-immersed transformer yog cov ncauj lus kom ntxaws hauv cov lus tswj hwm (kev sim tsis tu ncua hloov cov nqi winding voltage los ntawm ib feem).Rau qhuav-hom transformers, thaum tag nrho cov windings raug hloov, ua raws li lub Hoobkas ntsuas voltage tus nqi;rau kev hloov ib nrab ntawm windings thiab kev ntsuam xyuas tsis tu ncua, nias 0.85 npaug ntawm lub Hoobkas ntsuas qhov ntsuas hluav taws xob.
(3) Kev ceev faj Ntxiv rau qhov dav dav AC tiv thaiv qhov ntsuas hluav taws xob ceev faj, cov ntsiab lus hauv qab no yuav tsum raug sau tseg raws li cov yam ntxwv ntawm lub tshuab hloov pauv:
1) Qhov ntsuas transformer yuav tsum tau nruab nrog ib qho kev tiv thaiv overcurrent mus txawv tebchaws.
2) AC withstand voltage test ntawm peb-theem transformer tsis tas yuav tsum tau ua nyob rau hauv theem.Txawm li cas los xij, tag nrho cov hlau lead ntawm peb theem ntawm kev sib koom ua ke winding yuav tsum luv luv ua ntej qhov kev sim, txwv tsis pub nws yuav tsis tsuas cuam tshuam qhov tseeb ntawm qhov ntsuas hluav taws xob, tab sis kuj tuaj yeem ua rau muaj kev puas tsuaj rau lub ntsiab rwb thaiv tsev ntawm lub transformer.
3) Cov kev cai tiv thaiv kev ntsuas taw qhia tias rau tag nrho cov hluav taws xob hluav taws xob qis dua 66kV, thaum tsis muaj qhov chaw nyob, tsuas yog qhov kev tsim kho sab nraud tuaj yeem ua tiav qhov ntsuas hluav taws xob.
4) Rau cov hluav taws xob hloov hluav taws xob uas nws qhov nruab nrab qhov hluav taws xob rwb thaiv tsev tsis muaj zog dua li lwm qhov chaw lossis qib rwb thaiv tsev, qhov saum toj no sab nraud AC tiv taus qhov ntsuas hluav taws xob tsis tuaj yeem siv, tab sis kev ntsuas hluav taws xob induction ntawm 1.3 npaug ntawm qhov ntsuas hluav taws xob yuav tsum tau siv.
5) Nws yuav tsum tau kuaj tom qab tau ntim cov roj tsim nyog thiab so rau ib lub sijhawm.
6) Rau nruab nrab- thiab me-muaj peev xwm transformers nrog ib tug voltage theem ntawm 35kV, qhov kev ntsuam xyuas voltage yog tso cai rau ntsuas nyob rau hauv qis-voltage sab ntawm lub transformer xeem.Rau lub hwj chim transformers nrog lub peev xwm loj dua, txhawm rau ua kom ntsuas qhov tseeb thiab txhim khu kev qha, yuav tsum siv lub tshuab hluav taws xob hluav taws xob lossis hluav taws xob hluav taws xob voltmeter.Qhov ntsuas hluav taws xob yog ntsuas ncaj qha rau ntawm qhov siab voltage sab.
7) Yog tias tso tawm lossis tawg tshwm sim thaum lub sijhawm kuaj, tam sim ntawd txo qhov hluav taws xob thiab txiav tawm lub zog hluav taws xob kom tsis txhob muaj qhov ua tsis tiav.
Post lub sij hawm: Jan-05-2022