Frequently Asked Questions about Insulation Materials
1. What is insulation material? What are the types?
A: Insulating materials, also known as dielectrics, are materials that block the passage of electrical current, commonly referred to as non-conductive materials. There are three types of general insulation materials, including gas: like air, sulfur hexafluoride, etc.; liquids are: transformer oil, cable oil, capacitor oil, etc.; solids are: mica, asbestos, porcelain, glass and other inorganic insulating materials and paper, cotton yarn , wood, plastics and other organic insulating materials.
2. What is a soft magnetic material and what are its characteristics and uses?
A: Soft magnetic materials refer to ferromagnetic materials with small remanence and coercive force, such as silicon steel sheets, pure iron, and the like. This kind of material is easy to magnetize and easy to demagnetize. It is often used in motors, transformers, electromagnets and other devices.
3. What is eddy current? What are the drawbacks in production?
A: In a conductor in an alternating magnetic field, a closed loop current is induced in a section perpendicular to the direction of the magnetic flux. This current is eddy current. In industrial production, eddy currents can be used to make induction furnaces for metal smelting, and magnetoelectric and inductive electrical instruments can also be produced. However, it also has its use inferior, it will produce certain additional losses in the motor, transformer equipment, if the magnetic field weakens, it will cause the operating efficiency of the electrical equipment to decrease.