Factors Affecting the Use of Insulation Board Materials and Identification Methods:
1, Insulation resistance and resistivity of Insulation Board Materials
Resistance is the inverse of conductance, and resistivity is the resistance per unit volume. The smaller the conductivity of the data, the greater its resistance, the two are inversely related. For insulation data, the resistivity is always expected to be as high as possible.
2, relative dielectric constant and dielectric loss tangent of Insulation Board Materials
Insulation materials are used for two purposes: the insulation of each component of the electrical network and the capacitor's dielectric (energy storage). The former requires a small relative dielectric constant, while the latter requires a large relative dielectric constant, and both require a small dielectric loss tangent, especially for insulation materials used at high frequencies and high voltages. In order to reduce the dielectric loss, both need to be selected Insulation material with small dielectric loss tangent.
3.Breakdown voltage and electrical strength of Insulation Board Materials
Under a certain strong electric field, the insulation material is broken, and the insulation function is lost and it becomes conductive, which is called breakdown. The voltage at breakdown is called the breakdown voltage (dielectric strength). The electric strength is the quotient of the voltage between the voltage when the breakdown occurs and the two electrodes receiving the applied voltage, which is the breakdown voltage accepted per unit thickness. Regarding insulation materials, the higher the breakdown voltage and electrical strength, the better.
4.Tensile strength of Insulation Board Materials
Is the tensile stress that the specimen receives during the tensile test. It is the most widely used and representative experiment for the mechanical function experiments of insulation materials.
5, Burning resistance of Insulation Board Materials
Refers to the ability of insulation materials to burn when touching the flame or to prevent continuous burning when leaving the flame. With the increasing use of insulation materials, the need for incineration resistance has become more important. Everyone has improved and improved the incineration resistance of insulation materials through various methods. The higher the incineration resistance, the better its safety.
6, Arc resistance of Insulation Board Materials
The ability of insulation materials to withstand arcing effects along their appearance under regular experimental conditions. During the experiment, high voltage and small current are used to communicate, and the arc resistance between the two materials is determined by the high voltage arc effect between the two electrodes, so as to determine the arc resistance of the insulation material. The larger the time value, the better the arc resistance.
7.Sealing degree of Insulation Board Materials
It is better to seal oil and water.