The microcomputer relay protection tester is called: microcomputer relay protection instrument, relay maintenance tester, three-phase relay maintenance tester, relay protection tester, three-phase relay protection tester, three-phase relay maintenance calibrator, and relay protection calibration Verification instrument, three-phase continuous protection calibrator, and relay protection instrument.

 

      The microcomputer relay maintenance tester is a new type of intelligent testing instrument HSXJBY-I microcomputer relay maintenance calibrator. The former relay maintenance experiment is mainly composed of a voltage regulator and a phase shifter. It is bulky and has poor accuracy. High, can no longer be satisfied with the verification operation of modern microcomputer relay maintenance. With the continuous development of scientific skills, microcomputer relay maintenance has been widely used in various fields such as line maintenance, main transformer differential maintenance, and excitation control. Substation induction and automation have become the mainstream.
 

      The modern microcomputer relay maintenance tester can be divided into two forms. One is to use the traditional OCL power amplifier, which is large in size and weighs around 25Kg. It is relatively awkward. The power amplifier tube is operated in the magnified area, and the time is long, simple damage, and dynamic scale. Narrow, not high precision. The other is the use of switching power supply, the power amplifier is a digital power amplifier, which is small in size, light in weight, and high in efficiency. It is the development direction of the relay maintenance tester.