摘要
利用三相负载在墨形接法时,如负载不对称,其相电压也不对称的特点,检测电源相序,从而控制、保护三相负载,并给出电路原理图.
The authors described the characteristics that the phase voltage is not symmetrical if the load is not symmetrical when three-phase load is under star connection. They also pointed out that the phase seguence of the power supply must be checken. In the end, they gave the schematic drawing of the circuit.
关键词
相序
自动转换
保护电路
继电保护
phase seguence
automatic switching
protective circuit
