The current generated when a direct current voltage is applied at both ends of the insulation material can be divided into two parts: volume leakage current and surface leakage current. The current values of these two parts are generally very small, measured in microamperes (μ A); The size of the leakage current indicates the quality and aging degree of the insulation material. The smaller the leakage current, the better the insulation performance. By analyzing and comparing the trend of leakage current changes during the use of insulators, the moisture and aging status of the insulation can be determined; The magnitude of surface leakage current is mainly determined by the surface condition of the insulator, such as surface moisture, dirt, etc.

XZTZ3015 2500V Insulation Resistance Tester