A material that allows the live body to be isolated from other parts. Commonly used solid materials are insulating sleeves, insulating paper, laminates, rubber, plastic, paint, glass, ceramics, mica and so on. Commonly used liquid materials are transformer oil. Gaseous materials in the air, nitrogen, sulfur hexafluoride and other use more. Society is using more anti static plastic sheet. Use and industry and life, the more common is the "electrical tape", "plastic", ceramics and so on. Are all insulating materials.
Insulation material: Resistivity of 109 ~ 1022 Ω · Cm of the material composition of the material in the electrical technology known as insulating materials, also known as dielectric. Simply say that the material is isolated from the charged body. Insulation material on the DC current has a very large resistance, under the action of DC voltage, in addition to a very small surface leakage current, in fact, almost non-conductive, and for the AC current capacitor current through, but also that is not Conductive. The greater the resistivity of the insulating material, the better the electrical insulating board. The following are the same as the "
Insulating materials are absolutely indispensable in electrical products. For example, a 300MW turbo generator requires 10t insulation, mica 8t, laminate 5t, lacquer and film about 1t; a 3200kW transformer insulation material required for its total quality of 34%; a 10kV high pressure The insulation required for the circuit breaker is 18% of its total. According to China's power generation equipment installed capacity and supporting electrical equipment, insulation materials, the average consumption of 65t / 10MW, which shows that insulation materials in the electrical equipment occupies a very large ratio.