Sealing material and structure of the current transformer

1, the seal induction motor material Now the oil-immersed capacitive current transformer the sealing surface adopt oil resistant rubber gasket. Oil resistant rubber gasket performance: compression rate is 25% to 30%, at 130 ℃ when the inflation rate was 4%, and 50 ℃ when the shrinkage rate of 2.4%. According to the statistical data of the leakage of oil caused by gasket quality accounted for about 70% of the total oil leakage rate of above. Choose qualified rubber gasket, to eliminate leakage of transformer oil has a key role, of course it needs to communicate with transformer manufacturers. 2, the structure of the seal Transformer metal expander was adopted to realize full sealed, expander oil temperature changes when the volume of the compensation effect. In order to ensure the sealing surface fully tighten, do not lead to overly compressed seal again, most parts of limit seal. But in porcelain bushing www.facebook.com/dongfeng.motor and tank, metal expander coupling seal face and a outlet seal face of flange connection. Parts from the scene found that 400v ac motor motor vehicle the leakage of oil, it is precisely the flange surface is the most easy to oil leakage. So the flange face seal assembly procedure and process is particularly important. Good flange sealing surface must be smooth sealing surface cleaning, the pressure appropriate, reliable positioning, flange surface parallel uniform.