Judge the color of transformer insulation oil filtered by oil filter
Judge the color of transformer insulation oil filtered by oil filter
The determination of the color change after the filter of transformer insulation oil filter is mainly based on the naked eye observation to determine the depth of oil color. The color of the oil depends on the content of pitch, resin and other dye compounds. For example, in the original distillate, the asphalt, the less resin, the higher the light fraction, generally speaking, the lighter the color of the oil, the more transparent. The color of the oil is also related to the temperature and degree of refinement of the cut fraction. For example, the domestic no. 45 transformer oil has a lighter color and almost colorless appearance due to its lower cutting temperature and the process of adding antioxidants after overrefining. In the storage and operation of oil, under the influence of environmental pollution and the resinous substance generated by its own oxidation, its color will gradually become darker. Therefore, the environment in which the oil comes into contact, such as temperature, light, air (mainly oxygen), electric field, electric current, etc., can cause the oil to age and make the oil darker.
Application field of transformer insulation oil: liquid insulation medium such as insulation oil needs to test medium loss Angle and volume resistivity. For example, MS101Y insulation oil medium loss tester is used.
1. The arc. The electric arc in the middle of the contact when pulling the brake is quickly extinguished.
2. Insulation. Insulate the switch poles from each other and insulate the conductive part of the switch from the fuel tank.
3. Anti-corrosion. Prevent switch contacts from contacting air and avoid contact oxidation.
4. Heat dissipation. The oil is absorbed by the heat from the contact part and dissipated rapidly by the convection of the oil in the tank. Less oil circuit breaker because the amount of oil is very small, oil only plays the role of arc extinguishing, its shell is generally charged, must not touch.
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