单负载-双电源自动切换控制及其缺相保护

Automatic Change-over Control with Single-load Double-source and Its Out of Phase Protection

介绍具有缺相保护的单负载-双电源自动切换控制。其具有对三相供电电源的缺相检测及保护切换功能,在电源恢复正常后能自动进行反切换,当发生故障和恢复正常时,能分别发出两种区别明显的报警和提示音响,功能完备,性能稳定可靠。

The automatic single-load double-source change-over control with out of phase protection is presented.It has the functions of out of phase test and protection change-over for three phase power supply source.It can reverse change-over automatically after the source returns to normal.When faults appear and return to normal,it can give out a clear alarm and cue sound.Its function is perfect and characteristic is stability and relability.