Work started by the auxiliary contact switch input standby power from traditional power plants backup
power switch device (BZT) exist some disadvantages such as the low switching success rate, the slow
switching speed, large impulse current and so on. At present large-capacity generators widely use
microcomputer auxiliary power switching devices, and improve the switching success rate.
Microcomputer auxiliary power switching device turn-on time is generally 70ms ~ 80ms, and satisfy
therequirements of most electrical equipment. [1-3]However, if some loads are sensitive and require short
switching time that a few milliseconds or less, then the microcomputer auxiliary power switching devices