Lub rwb thaiv tsev tiv thaiv tester yog tsim los ntsuas qhov kev tiv thaiv tus nqi ntawm ntau yam ntaub ntawv insulating thiab rwb thaiv tsev ntawm transformers, motors, cables thiab cov khoom siv hluav taws xob los xyuas kom meej tias cov khoom siv hluav taws xob thiab cov kab no ua haujlwm nyob rau hauv ib txwm muaj thiab tsis txhob muaj xwm txheej xws li hluav taws xob poob siab. casualties thiab khoom puas.
Cov teeb meem tshwm sim ntawm rwb thaiv tsev tiv thaiv tester yog raws li hauv qab no:
1. Thaum ntsuas lub peev xwm load tsis kam, qhov kev sib raug zoo ntawm cov zis luv-circuit tam sim no ntawm rwb thaiv tsev tiv thaiv tester thiab cov ntaub ntawv ntsuas, thiab vim li cas?
Cov zis luv-circuit tam sim no ntawm lub rwb thaiv tsev tiv thaiv tester tuaj yeem cuam tshuam qhov kev tiv thaiv sab hauv ntawm qhov chaw siab-voltage.
Ntau cov khoom siv rwb thaiv tsev yog cov khoom siv hluav taws xob, xws li cov cables ntev, lub cev muaj zog nrog ntau windings, transformers, thiab lwm yam. Yog li ntawd, thaum ntsuas cov khoom muaj peev xwm, thaum pib ntawm cov txheej txheem xeem, qhov high voltage qhov chaw nyob rau hauv lub rwb thaiv tsev tester yuav tsum tau them. lub capacitor los ntawm nws sab hauv tsis kam, thiab maj mam them tus nqi hluav taws xob mus rau qhov tso zis nyob rau hauv high voltage tus nqi ntawm lub rwb thaiv tsev tiv thaiv tester.Yog hais tias tus nqi capacitance ntawm cov khoom ntsuas yog loj, los yog lub internal kuj ntawm high voltage qhov chaw yog loj, cov txheej txheem them yuav siv sij hawm ntev dua.
Nws qhov ntev tuaj yeem txiav txim siab los ntawm cov khoom ntawm R thiab C load (hauv vib nas this), piv txwv li t = R * C load.
Yog li ntawd, thaum lub sij hawm xeem, lub capacitive load yuav tsum tau them rau qhov ntsuas voltage, thiab lub them ceev DV / DT yog sib npaug zos rau qhov ratio ntawm them tam sim no I thiab load capacitance C. Qhov ntawd yog DV / dt = I / C.
Yog li ntawd, qhov me me ntawm qhov kev tiv thaiv sab hauv yog, qhov loj dua qhov kev them nqi tam sim no, thiab qhov nrawm dua thiab ruaj khov dua qhov kev ntsuam xyuas yog.
2. Dab tsi yog qhov ua haujlwm ntawm "g" kawg ntawm qhov ntsuas?Nyob rau hauv qhov kev ntsuam xyuas ntawm high voltage thiab siab tsis kam, yog vim li cas lub ntsuas yog txuas nrog lub "g" davhlau ya nyob twg?
Qhov "g" qhov kawg ntawm qhov ntsuas yog lub davhlau ya nyob twg tiv thaiv, uas yog siv los tshem tawm cov dej noo thiab av hauv qhov ntsuas qhov ntsuas ntawm qhov ntsuas.Qhov "g" qhov kawg ntawm qhov ntsuas yog los hla qhov ntws tawm tam sim no ntawm qhov chaw kuaj khoom, kom cov dej ntws tawm tsis dhau los ntawm qhov ntsuas hluav taws xob ntawm lub ntsuas ntsuas, tshem tawm qhov yuam kev los ntawm qhov xau tam sim no.Thaum kuaj tus nqi siab, G kawg yuav tsum tau siv.
Feem ntau hais lus, g-terminal tuaj yeem txiav txim siab thaum nws siab dua 10g.Txawm li cas los xij, qhov kev tawm tsam no tsis yog qhov tseeb.Nws yog huv si thiab qhuav, thiab qhov ntim ntawm cov khoom yuav tsum ntsuas yog me me, yog li nws tuaj yeem ruaj khov yam tsis ntsuas 500g ntawm g-kawg;Hauv ib puag ncig ntub thiab qias neeg, qis kuj tseem xav tau g davhlau ya nyob twg.Tshwj xeeb, yog tias nws pom tias qhov tshwm sim yog qhov nyuaj kom ruaj khov thaum ntsuas qhov ua haujlwm siab, g-terminal tuaj yeem txiav txim siab.Tsis tas li ntawd, nws yuav tsum tau muab sau tseg tias lub shielding davhlau ya nyob twg G tsis txuas nrog lub shielding txheej, tab sis txuas nrog lub insulator ntawm L thiab E, los yog nyob rau hauv lub multi strand hlau, tsis yog rau lwm cov xov hlau nyob rau hauv kev sim.
3. Vim li cas nws thiaj li yuav tsum ntsuas tsis yog tsuas yog cov kev tiv thaiv dawb huv xwb, tab sis kuj yog qhov ntsuas qhov nqus thiab polarization Performance index thaum ntsuas qhov rwb thaiv tsev?
PI yog qhov polarization Performance index, uas yog hais txog kev sib piv ntawm rwb thaiv tsev nyob rau hauv 10 feeb thiab 1 feeb thaum lub sij hawm rwb thaiv tsev kuaj;
DAR yog dielectric absorption piv, uas yog hais txog qhov sib piv ntawm cov rwb thaiv tsev tiv thaiv hauv ib feeb thiab hauv 15s;
Hauv kev ntsuam xyuas kev rwb thaiv tsev, cov nqi hluav taws xob tiv thaiv ntawm ib lub sijhawm tsis tuaj yeem cuam tshuam tag nrho cov kev ua haujlwm ntawm rwb thaiv tsev ntawm cov khoom kuaj.Qhov no yog vim yog ob qho laj thawj hauv qab no: ntawm ib sab, kev tiv thaiv kev tiv thaiv ntawm tib yam khoom siv rwb thaiv tsev yog me me thaum lub ntim loj, thiab loj thaum lub ntim me me.Ntawm qhov tod tes, muaj cov nqi absorptivity thiab polarization txheej txheem hauv cov ntaub ntawv insulating thaum siv hluav taws xob siab.Yog li, lub zog hluav taws xob yuav tsum tau ntsuas qhov sib piv ntawm qhov nqus (r60s rau r15s) thiab polarization Performance index (r10min rau r1min) yuav tsum tau ntsuas nyob rau hauv kev ntsuas rwb thaiv tsev ntawm lub ntsiab transformer, cable, lub cev muaj zog thiab ntau zaus, thiab cov xwm txheej rwb thaiv tsev tuaj yeem raug txiav txim los ntawm cov ntaub ntawv no.
4. Vim li cas ob peb lub roj teeb ntawm hluav taws xob hluav taws xob tiv thaiv hluav taws xob tuaj yeem tsim hluav taws xob DC siab?Qhov no yog raws li lub hauv paus ntsiab lus ntawm DC hloov dua siab tshiab.Tom qab kev txhim kho Circuit Court ua haujlwm, qhov hluav taws xob qis qis tau nce mus rau qhov tso zis ntau dua DC voltage.Txawm hais tias qhov generated high voltage yog siab dua, lub zog tso zis me me (tsawg zog thiab me me tam sim no).
Lus Cim: Txawm hais tias lub zog me me, nws tsis pom zoo kom kov qhov kev sojntsuam, tseem yuav muaj tingling.
Post lub sij hawm: May-07-2021
