Kev teeb tsa ntawm transformer siab -voltage bushings yog ib qho kev ua haujlwm zoo thiab ua haujlwm zoo, tshwj xeeb tshaj yog rau cov cuab yeej siv hluav taws xob ntawm 110kV thiab siab dua. Kev ua raws li cov lus qhia tshwj xeeb yog qhov tseem ceeb kom ntseeg tau tias kev ua haujlwm rwb thaiv tsev thiab kev nyab xeeb ntawm kev ua haujlwm. Cov hauv qab no yog cov kauj ruam tseem ceeb rau kev ua haujlwm siab -voltage bushings, sau los ntawm cov qauv kev lag luam thiab kev xyaum ua haujlwm:
Ua ntej-Kev Npaj Kev Txhim Kho
Bushing Condition Inspection
Tshawb xyuas cov khoom plooj (porcelain) kom muaj kev ncaj ncees, kuaj xyuas cov kab nrib pleb, kev puas tsuaj, lossis cov cim tso tawm.
Paub meej tias cov roj theem yog ib txwm muaj (muaj feem xyuam rau cov roj-cov roj immersed), tsis muaj roj to.
Xyuas kom tseeb tias tus qauv thiab cov lus qhia tshwj xeeb yog sib xws rau cov qauv tsim kom tsis txhob muaj peev xwm lossis qhov voltage tsis sib haum.
Kev ntsuas hluav taws xob thiab rwb thaiv tsev
Ntsuas cov rwb thaiv tsev tiv thaiv, feem ntau yuav tsum tsis pub tsawg tshaj 1000MΩ.
Ua ib qho kev ntsuas dielectric poob tangent (tanδ) kom ntseeg tau tias kev ua haujlwm rwb thaiv tsev yog raws li tus qauv.
Xyuas qhov kev cia siab ntawm qhov kawg screen grounding; cov ntsuas terminals yuav tsum muaj kev ntseeg siab hauv av thaum tsis ntsuas.
Ntxuav thiab sealing
Ntxuav lub bushing flange nto thiab transformer mounting qhov, xyuas kom lawv tsis muaj roj thiab impurities.
Tshawb xyuas lub sealing gasket kom muaj kev ncaj ncees; hloov nws nrog cov roj- cov roj hmab resistant gasket yog tias tsim nyog los tiv thaiv kev xau yav tom ntej.
Cov cuab yeej thiab kev npaj kev nyab xeeb
Npaj tshwj xeeb lifting cuab yeej, torque wrenches, nylon slings, thiab lwm yam. Tsis txhob siv steel hlau ropes ncaj qha mus khi cov ceramic Cheebtsam.
Ua raws li kev tiv thaiv kev nyab xeeb xws li hluav taws xob hluav taws xob, ntsuas hluav taws xob, thiab hauv av kom muaj kev nyab xeeb ntawm kev ua haujlwm.
