What are the key factors in determining the performance of insulating materials?

Various types of NMN Insulating material are often used in various circuit facilities. However, for different areas of use, the performance of the selected insulating material is different. So what is the key factor in the performance of a constant insulating material?
 First, the breakdown voltage, electrical strength: in a strong electric field under the destruction of insulating materials, insulation ladder loss of insulation properties lead to conductive state, known as breakdown. The breakdown voltage is called the breakdown voltage. The electrical strength is the breakdown of the voltage at the time of breakdown under the specified conditions and the distance between the two electrodes serving the external voltage, that is, the breakdown voltage of the unit thickness. For insulating materials, the general breakdown voltage, electrical strength of the value of the higher the better.
Second, the ignition resistance: With the increasing application of insulating materials, the requirements of its fire points are also getting higher and higher. Many manufacturers are beginning to use a variety of ways, and constantly improve the resistance of crepe paper tubes. The higher the ignition resistance, the security will be better.
Third, the arc resistance: in the provisions of the implementation of the conditions, the insulation material to withstand the arc along the surface of the ability to touch. The use of interchangeable high-pressure small current, by high pressure in the arc between the two electrodes caused by moving, so that the surface of the insulating material to the conductive layer of the time required to determine the arc resistance of mica insulation tape. In general, the greater the time value, the better the arc resistance.