Transformer bushings ua lub luag haujlwm tseem ceeb hauv kev ua kom muaj kev nyab xeeb thiab kev ua haujlwm ntawm kev hloov pauv. Cov bushings muab hluav taws xob rwb thaiv tsev thiab txhawb kom high- voltage belterures los ntawm transformer rau sab nraud ntawm sab nraud. Txhawm rau kom muaj kev ntseeg siab ntawm transformer bushings, nws yog ib qho tseem ceeb kom ua kev xeem siv, suav nrog kev kuaj hluav taws xob tsis tu ncua (C & DF).
Kev kuaj C & DF yog dab tsi?
Capacitance (c):
Kev ntsuas lub bushing lub peev xwm los khaws cov hluav taws xob them nqi. Ib qho kev sib txawv ntawm kev capitaliate yuav qhia cov tsis taus sab hauv xws li voids, tawg, lossis dej noo ingress.
Dielectric dissipation Factor (DDF / TAN δ):
Kuj tseem hu ua lub zog siv hluav taws xob, nws ntsuas lub zog poob rau hauv lub rwb thaiv tsev. Kev nce hauv DDF cov ntsiab lus rwb thaiv tsev detheration.
CI1 thiab C2 Kev Ntsuas
C1 - Rwb thaiv tsev loj:
Sawv cev ntawm lub peev xwm thiab tus rdf ntawm cov rwb thaiv tsev tseem ceeb ntawm lub bushing. Nws qhia txog kev noj qab haus huv tag nrho ntawm lub ntsej muag tseem ceeb.
C2 - Cov Cheeb Tsam Kev Txaus Siab Lub khob hliav qab / grading:
Tsom rau thaj av ntau dua mus rau noo noo thiab nto paug. C2 yog rhiab heev rau kuaj pom cov teeb meem thaum ntxov.
Vim li cas cov kev ntsuas no tseem ceeb?
1. Thaum ntxov kev txhaum kev paub txog - qhia cov rwb thaiv tsev ua ntej nws loj mus rau hauv kev puas tsuaj. Kev Txij Nkawm - Taug qab C1 & C2 Tiam dhau lub sijhawm pab ua kom zoo dua cov sijhawm txij li cov nyiaj txiag.
2. Cov txheej txheem ntseeg tau - ua kom cov hloov pauv txuas ntxiv ua haujlwm kom muaj kev nyab xeeb, txo cov kev tawm tsam thiab kev txuas ntxiv cov khoom siv sia.
Txhawm rau kev sim C & DF ntawm transformer bushings, khoom siv tshwj xeeb xws li TAN Delta Test Test. Qhov kev xeem cuam tshuam nrog kev ntsuas voltage rau bushing thiab ntsuas qhov muaj peev xwm capacitance thiab dissipation factor muaj txiaj ntsig. Cov kev ntseeg no tau muab piv rau cov chaw tsim khoom lag luam cov kev qhia tshwj xeeb lossis cov kev sim ua dhau los ntsuas cov mob ntawm lub bushing.
