Relative dielectric permittivity and loss angle tangent among them are the two of most important indexes. 相对介电常数和介质损耗角正切是其中的两个重要的性能指标。
Therefore, the study on the dielectric loss tangent electriferous monitoring technique of capacitive-type equipment is of practical values. 因此，对电容型设备介质损耗角进行带电检测技术的研究具有重要意义。
