Polar fibers are not only easy to absorb moisture (moisture to make strong polar medium), and when the paper fiber absorbs water, the interaction between the hydroxyl force weakened, the fiber structure is unstable under the conditions of mechanical strength sharply deteriorated , Therefore, the paper insulation parts are generally dried or vacuum dry treatment and immersion paint or insulating paint before use, the purpose of dipping paint is to keep the fiber wetting to ensure that it has a higher insulation and chemical stability and High mechanical strength. At the same time, the paper is sealed by the paint, can reduce the absorption of water on the paper to prevent oxidation of materials, but also to fill the gap, to reduce the insulation performance may be possible, resulting in partial discharge and electric breakdown of the bubble. But some think that after the dip and then dip oil, may be some paint will slowly dissolve in the oil, affecting the performance of oil, the application of such paint should be sufficient to note.
Of course, the different properties of different fiber materials and the same composition of the different quality of fiber materials, the impact of the size and performance are different, such as cotton fiber composition of the highest, the most strong fiber in cannabis, some imported insulating paperboard processing because of its good Performance is better than some of the materials made of cardboard. Most of the transformer insulation materials are used in various types of paper (such as paper, cardboard, paper pressure molding, etc.) for insulation. Therefore, in the transformer manufacturing and maintenance of a good choice of fiber materials, insulation paper material is very important. The special advantages of fiber paper is practical, low price, easy to use, in the temperature is not high when the molding and processing simple and flexible, and light weight, moderate strength, easy to absorb impregnated materials (such as insulating paint, transformer oil, etc.).
1、Product composition and characteristics
Class B insulation material. Excellent heat resistance, adhesion, oil resistance and flexibility, resistance to strong chemical gases. For the impregnation of motors, transformers, telecommunications equipment winding, but also for metal laminated surface treatment, especially for hot and humid with chemical anti-corrosion motor, electrical appliances.
2、use
Applicable to high temperature, high speed, high vibration motor rotor coil dripping, rolling dip insulation treatment. After processing the coil has a good overall, to reduce the motor vibration and noise, improve the motor life has a significant effect.
3、Special Note
The company strictly in accordance with the relevant product standards to control product quality. Due to the diversity of application conditions and variability and many other factors, it does not rule out the need for user self-test study, the law does not guarantee that some of the performance of a particular product for a specific use, and retain the data to modify the power.
4、Technical Parameters
2, the mechanical strength of paper insulation material. Oil-immersed transformers Select the most important factors for paper insulation. In addition to paper fiber composition, density, permeability and uniformity, it also includes mechanical strength requirements, including tensile strength, stamping strength, tear strength and toughness:
① tensile strength: the requirements of paper fiber by the tensile load, with a tolerance can not be pulled off the maximum stress
② Stamping strength: the requirement that the paper fibers be resistant to stress without being broken.
③ tear strength: the required paper fiber tear required to meet the appropriate standards.
④ toughness: paper folding or cardboard bending strength to meet the corresponding requirements.
Determine the solid insulation performance can be measured to measure the degree of polymerization of paper or cardboard, or the use of high performance liquid chromatography analysis of oil in the determination of furfural content in order to analyze the transformer internal failure, whether it involves solid insulation or the presence of coil insulation caused by local aging Of the low temperature overheating, or to determine the degree of solid insulation aging. Insulation material on the paper fiber in the operation and maintenance, should pay attention to control the transformer rated load, requiring the operating environment air circulation, heat dissipation conditions, to prevent the transformer temperature rise and the cabinet lack of oil. But also to prevent oil pollution, deterioration caused by accelerated aging of the fiber, and damage the transformer insulation performance, service life and safe operation.
Xuchang, Henan
+86-199 3740 8623
