Whether the electrical insulation is good or not can be measured by measuring its insulation resistance and what the other is
Partial discharge: when the electric field voltage generated in electrical equipment, enough to make the insulation area discharge, but not the fixed discharge discharge channel phenomenon formed in the discharge region, called partial discharge.
The dielectric loss tangent, which represents the physical quantity of dielectric loss after applying an electric field, is represented by tan delta, which is the dielectric loss angle.
Leakage current refers to electrical equipment in normal operation, tiny current is generated between the line and the zero line, the equivalent of the general electric static test, leakage current tester, mainly to test its L pole and N pole
Absorption ratio refers to the ratio of insulation measuring equipment for 60 seconds and 15 seconds two times due to the insulation resistance, DC voltage and equipment for various lengths of time, the impact on equipment of wet condition is different, so the ratio of 2 times, can determine whether the equipment is due to the impact of the insulation resistance to wet the reason, if the absorption ratio is equal to 1, the 2 time that damp resistance change was not obvious, if the absorption ratio is relatively large, indicating the equipment after drying the insulation resistance increased significantly, then combined with the specific analysis of the condition of equipment insulation resistance. The absorption ratio should be considered in conjunction with the specific environment in which the device is located.
