The Development And Manufacture Of Automatic Transfer Switch

Automatic transfer switch is an important part of low voltage device. Its reliability deeply depends on the reliability of the operation mechanism. Nowadys, in the progress of the design of automatic transfer switch inland, there is mostly imitation according to the products aboard. The design procedure is respectively simple, by means of surveying and mapping major, drawing minor, to get the whole operation process of the automatic transfer switch, especially of the operation mechanism. This kind of method is not only complicated, but also need to verify the design is correct by proto test. Therefore, it lacks of core technology and has no intellectual property indeed.This article figure up the swithing force and torque, electric operation force and torque, manual operation force and torque of automatic transfer switch by means of statics analyse. According to the normal working condition of automatic transfer switch, it confirms the mechanics principle of the operation mechanism of automatic transfer switch. Based on these, innovatively establishing model of operation mechanism with given contact parameters of automatic transfer switch. Then simulating the movement of operation mechanism with virtual proto simulation software Adams, analysing the switch process and movement speed of operation mechanism and analysing the influence of mechanism spring parameter, the shape of roller, the position of rod piece on operation mechanism. According to the the result of simulation, trial-producing automatic transfer switcha and testing the mechanism operation, making and breaking capacity, short circuit making capacity, electrical and mechanical life to verify the result of simulation.From the process and result of test, simulation technology guides the whole design of product, every performance index of operation mechanism satisfy the requirement of development and manufacture. The result of operation mechanism fits the result of simulation, so the development and manufacture of the operation mechanism is successful and the product is effectively applied in Changshu Switchgear Mfg. Co., Ltd.