鼎汉电源屏PZ系列采用的H型输入电路,在外电网质量不高、电压不稳的情况下,容易发生部分设备不能正常工作,尤其在I路优先的情况下,当I路电压不稳,极易造成输出电源“跳舞”模块保护,影响大面积设备正常工作。为此提出对切换电路进行改进,防止或减少设备故障的发生。 Ding Han power screen PZ series H-type input circuit used in the external power grid is not high quality, voltage instability, prone to some equipment can not work, especially in the case of priority I, when the I voltage instability, Easily lead to output power “Dancing ” module protection, affecting the normal operation of large area equipment. To this end proposed to improve the switching circuit to prevent or reduce the occurrence of equipment failure.