A material in electrical equipment that isolates a charged body from other parts. Commonly used solid materials are insulating sleeves, insulating paper, laminates, rubber, plastic, paint, glass, ceramics, mica, and the like. Commonly used liquid materials are transformer oil and the like. The gaseous material is used more in air, nitrogen, sulfur hexafluoride or the like. Insulating material: A material composed of a material having a resistivity of 109 to 1022 Ω·cm is electrically known as an insulating material, and is also called a dielectric. Simply put, it is the material that separates the charged body from other parts. The insulating material has a very large resistance to the direct current. Under the action of the direct current voltage, in addition to the extremely small surface leakage current, it is practically almost non-conductive, and for the alternating current, the capacitive current passes, but it is also considered to be no. Conductive. The greater the electrical resistivity of the insulating material, the better the insulating properties. Insulation materials are essential materials in electrical products. For example, a 300MW turbine generator requires 10t of insulating paint, 8t of mica products, 5t of laminate, lacquered cloth and film of about 1t; the insulating material required for a 3200kW transformer accounts for 34% of its total mass; a high voltage of 10kV The insulation required for the circuit breaker accounts for 18% of the total. According to the installed capacity of China's power generation equipment and the electrical insulation equipment of the matching electrical equipment, the average consumption is 65t/10MW. It can be seen that the proportion of insulating materials in electrical equipment is very large. In general, motors and electrical equipment are composed of conductor materials, magnetic materials, insulating materials, and structural materials. Except for insulating materials, all are metallic materials. In the operation of electric motors and electrical appliances, it is inevitable to be affected by various factors such as temperature, electric and mechanical stress and vibration, harmful gases, chemicals, moisture, dust and radiation. These factors have a more pronounced effect on insulating materials than on other materials. It can be said that the insulating material is more sensitive to these factors, and it is easy to deteriorate and deteriorate, resulting in damage to electrical equipment. Therefore, the insulating material is the key material that determines the reliability of the operation of the motor and electrical equipment. With the continuation of the running time, the insulating material must age, and its aging speed is faster than other materials, so the key material that determines the service life of the motor and electrical appliance is also the insulating material. Insulation material is one of the key factors determining the technical and economic indicators of electric motors and electrical appliances. One of the important technical and economic indicators of the motor is the mass to power ratio, ie the kg/kw value. Reducing the ratio is important for the motor. According to reports, from 1900 to 1967, the quality of 1hp (0.75kW) motor was reduced from 40kg to 10kg, and has been reduced to 6kg/kW. An important reason for this change is the use of insulating materials with high heat resistance. Reducing the kg/kW value saves a lot of metal material and reduces the cost of the motor. If a Class A (105 °C) motor is insulated with Class H (180 °C), it can reduce the volume by 30% to 50%, save 20% of copper, 30% to 50% of silicon steel sheet, and 25% of cast iron. Of course, using the same type of machine, with a higher temperature resistance of the insulation material, you can increase the power or extend the life of the motor. From the perspective of the cost of electric motors and electrical products, the cost of insulating materials is about half, which explains the position and role of insulating materials in the motor and electrical industry. Insulation Materials A material used to isolate conductive portions of different potentials. Its conductivity is below 10-10 s / m. In different electrical products, according to the needs, the insulating materials often also play the role of energy storage, heat dissipation, cooling, arc extinguishing, moisture proof, mildew proof, anti-corrosion, anti-irradiation, mechanical support and fixation, and protection of conductors. Self Tapping Screw,Self Tapping Screw Strength,Self Tapping Screw Household,Self Tapping Screw Cross Hebei Qianmu Fastener Manufacturing Co., Ltd , https://www.qmjgjfasteners.com