High voltage switch characteristic tester, high voltage circuit breaker is one of the most important control equipment in the power system. The number of high voltage circuit breakers in operation in the power grid is the largest, and their operating conditions and technical requirements are relatively complex. Their operational reliability not only affects the high voltage circuit breaker itself, but also affects other equipment and even the entire power grid. Therefore, testing the dynamic characteristics of high voltage circuit breakers is a very important task. However, traditional methods for testing the dynamic characteristics of high voltage circuit breakers have disadvantages such as complex operation and low testing accuracy. To solve these problems, the high voltage switch characteristic tester was developed. The high voltage switch characteristic tester is equipped with a universal speed sensor, which is easy to install and provides accurate and reliable measurement results. It is a universal computer-based intelligent testing instrument developed for various high voltage switches. This instrument applies photoelectric pulse technology, single-chip computer technology, and reliable anti-electromagnetic radiation technology, and is equipped with accurate and reliable speed/distance sensors. It can be used for the debugging and measurement of mechanical parameters of various voltage levels of vacuum, sulfur hexafluoride, low oil, and multi oil high voltage switches. The instrument is easy to wire and operate. Only one closing (opening) action is needed to obtain all the data for closing (opening). It can also print all the required data, the breaking current waveform, and the moving contact motion curve, which is convenient for analysis and storage.