Tam sim no transformer (CT) yog cov khoom siv hluav taws xob tseem ceeb hauv lub zog hluav taws xob.Nws yog lub luag haujlwm rau kev sib cais ntawm cov tshuab hluav taws xob siab thiab tsis tshua muaj hluav taws xob thiab kev hloov pauv ntawm high voltage mus rau qhov tsis tshua muaj hluav taws xob.Txawm hais tias cov xaim yog qhov tseeb lossis tsis yog qhov tseem ceeb rau kev ua haujlwm ntawm kev tiv thaiv, ntsuas, ntsuas thiab lwm yam khoom siv ntawm lub cev.Thaum CT tshiab raug teeb tsa thiab CT thib ob cable tau muab tso rau hauv kev ua haujlwm lossis hloov, ntsuas qhov tseeb ntawm CT polarity twb yog cov txheej txheem ua haujlwm tseem ceeb rau cov neeg ua haujlwm tiv thaiv relay.Tom ntej no, HV Hipot yuav qhia txog CT polarity ntsuas kom meej:
HV Hipot GDHG-201A transformer CT / PT yam ntxwv tester
1. Dab tsi yog qhov polarity ntawm CT?
Lub polarity yog lub zog electromotive induced los ntawm thawj kauj thiab theem nrab kauj nyob rau hauv qhov kev txiav txim ntawm tib lub sib nqus flux ntawm cov tub ntxhais hlau.Ob qhov kawg uas ncav cuag lub peev xwm siab nyob rau tib lub sijhawm lossis qhov kawg uas muaj peev xwm tsawg tib lub sijhawm yog hu ua tib lub polarity kawg.
Lub npe hu ua tam sim no transformer (CT) polarity yog hais txog kev sib raug zoo ntawm cov kev taw qhia tam sim no ntawm nws thawj winding thiab theem nrab winding.Raws li kev cai, thawj qhov kawg ntawm CT thawj winding yog cim raws li P1, thiab tus Tsov tus tw kawg yog cim raws li P2;lub taub hau kawg ntawm qhov thib ob winding yog cim li S1, thiab tus Tsov tus tw kawg yog cim li S2.Hauv kev xaim, P1 thiab S1, P2 thiab S2 yog hu ua tib polarity kawg.Piv txwv tias tam sim no I1 ntawm thawj winding ntws los ntawm lub taub hau kawg P1 thiab ntws tawm los ntawm tus Tsov tus tw kawg P2, qhov induced tam sim no I2 nyob rau hauv lub thib ob winding ntws tawm ntawm lub taub hau kawg S1 thiab ntws los ntawm tus Tsov tus tw kawg S2.Lub sijhawm no, cov hlau nplaum sib nqus tsim tawm hauv cov tub ntxhais hlau hauv tib txoj kev, xws li CT polarity kos npe hu ua depolarization.Ntawm qhov tsis sib xws, nws yog hu ua ntxiv polarity.Feem ntau siv tam sim no transformers, tshwj tsis yog tias tau teev tseg, siv depolarization.
2. Vim li cas thiaj ntsuas qhov polarity ntawm CT?
Lub polarity ntawm tam sim no transformer yuav tsum tau kuaj ua ntej thiab tom qab muab thiab overhaul.Tsis tas li ntawd, thaum kev tiv thaiv kev sib txawv hauv kev ua haujlwm, lub zog kev tiv thaiv kev ua haujlwm tsis zoo lossis lub watt-teev meter rov qab, qhov polarity ntawm CT kuj yuav tsum tau kuaj xyuas.Nws yog vim hais tias yog hais tias lub polarity ntawm tam sim no transformer yog tsis ncaj ncees lawm kev twb kev txuas thaum lub sij hawm thaiv, cov nram qab no tej yam kev mob yuav tshwm sim:
(1) Yog hais tias tam sim no transformer siv nyob rau hauv lub relay tiv thaiv Circuit Court, nws yuav ua rau lub relay tiv thaiv ntaus ntawv malfunction los yog tsis kam ua hauj lwm, thiab nyob rau tib lub sij hawm, nws yuav cuam tshuam rau lub lag luam saib xyuas thiab kev huam yuaj ntawm lub hwj chim system, thiab txawm ua rau muaj kev phom sij rau cov khoom siv thiab kev nyab xeeb ntawm tus kheej thaum mob hnyav.
(2) Yog tias lub tshuab hluav taws xob tam sim no siv rau hauv qhov ntsuas ntsuas ntsuas hluav taws xob, nws yuav ua rau qhov taw qhia ntawm ntau yam twj paj nruag thiab ntsuas thiab ntsuas hluav taws xob tsis raug.
(3) Yog hais tias tam sim no transformer nrog lub hnub qub tsis tiav kev twb kev txuas yog siv, yog hais tias lub polarity ntawm ib theem yog reversed, tam sim no ntawm ib theem (feem ntau yog nruab nrab theem) ntawm unconnected tam sim no transformer yuav ntau zaus ntau dua li ntawm lwm theem.
(4) Yog tias tam sim no transformer nrog tsis tiav lub hnub qub kev twb kev txuas yog siv, yog hais tias ob theem yog thim rov qab, txawm hais tias peb-theem tam sim no nyob rau hauv lub thib ob sab tseem muaj peev xwm tswj tau qhov sib npaug, lub kaum sab xis sib txawv nrog rau cov thawj sab tam sim no yog 180 °, yog li ntawd yuav thim rov qab lub 'meter'.
Yog li ntawd, nws yog ib qho tseem ceeb heev uas yuav tsum txiav txim siab seb qhov polarity ntawm transformer tam sim no yog qhov tseeb los yog tsis.
Post lub sij hawm: Dec-06-2022