Explain the function of insulating materials

The function of insulating material is to isolate the live parts with different potential in electrical equipment. Therefore, insulating materials should first have high insulation resistance and withstand voltage strength, and can avoid leakage, breakdown and other accidents. Secondly, the heat resistance is good to avoid aging and deterioration due to long-term overheating; In addition, it should have good thermal conductivity, moisture resistance and lightning protection, high mechanical strength and convenient process. According to the specific gravity, tensile strength and other performance indexes of the above materials, there are common requirements for expansion resistance and tensile strength.