Transformer Oil Test Methods
Tso lus
Transformer roj kuaj yog ib kauj ruam tseem ceeb hauv kev ua kom muaj kev nyab xeeb ntawm cov khoom siv fais fab. Cov kev sim ntsuas npog ntau yam, suav nrog lub cev, tshuaj, thiab hluav taws xob, kom ntseeg tau tias cov roj transformer tswj kev ua haujlwm zoo hauv kev rwb thaiv tsev, kub dissipation, thiab arc extinguishing.
Cov khoom kuaj niaj hnub thiab cov txheej txheem sib xws
Breakdown Voltage Determination: Siv los ntsuam xyuas lub zog rwb thaiv tsev ntawm cov roj transformer. Lub khob roj tshwj xeeb thiab cov tshuab hluav taws xob tau siv, thiab qhov hluav taws xob tau maj mam nce hauv qhov hluav taws xob tsis sib xws kom txog thaum cov qauv roj tawg. Tus nqi tawg voltage raug kaw. Tus qauv txheej txheem yog GB / T 507-2002 "Kev txiav txim siab ntawm kev tawg Voltage ntawm Insulating Roj". Feem ntau, qhov kev xav tau ntawm qhov hluav taws xob tawg rau cov roj siv hauv 110kV thiab cov khoom siv saum toj no tsis tsawg dua 40kV.
Moisture Content Determination: Moisture ho txo qis kev ua haujlwm ntawm rwb thaiv tsev thiab ua kom cov roj aging. Txoj kev Karl Fischer (txoj kev coulometric lossis volumetric method) yog ib qho kev siv siab -txoj kev muaj peev xwm txheeb xyuas cov dej noo ntawm qib ppm. Tus qauv cuam tshuam yog GB / T 7600-2014. Thaum lub sijhawm ua haujlwm, cov dej noo ntawm cov roj feem ntau tswj tau qis dua 20 ~ 35mg / L.
Acid tus nqi txiav txim: Reflects qib ntawm cov roj oxidation; cov kua qaub ntau dhau tuaj yeem ua rau cov khoom siv corrode. Cov tshuaj acidic nyob rau hauv cov roj yog titrated nrog ib tug poov tshuaj hydroxide - ethanol tov, thiab qhov tshwm sim yog qhia raws li mgKOH / g. Cov qauv tsim nyog yog GB / T 264-1983 lossis SH / T 0254. Thaum lub sijhawm ua haujlwm, cov roj acid tus nqi yuav tsum tsis pub tshaj 0.1 mgKOH / g.
Dielectric poob yam tseem ceeb (tanδ): Characterizes qhov loj ntawm cov roj rwb thaiv tsev poob thiab yog ib qho tseem ceeb qhia rau kev txiav txim siab roj zoo deterioration. Nws yog ntsuas siv lub dielectric poob tester nyob rau hauv tej yam kub thiab hluav taws xob tej yam kev mob. Tus qauv tsim nyog yog GB / T 5654-2007.