The preventive test of high-voltage electrical equipment, that is, the power system includes a large number of electrical equipment, and the failure of some electrical equipment may even threaten the safe power supply of the entire system. The practice of electric power production has proved that the inspection and testing of electrical equipment in accordance with regulations is one of the important measures to prevent problems before they occur and ensure the safe and economical operation of the power system.
According to the different functions and requirements of the test, the test of electrical equipment can be divided into two categories: insulation test and characteristic test. Power equipment preventive test equipment insulation test routines include: series resonance withstand voltage test, induction withstand voltage test, dielectric loss test, insulation resistance test
Power equipment preventive test equipment characteristics test routines include: arrester characteristics, test circuit breaker characteristics, test transformer characteristics test, current transformer characteristics test