对国外一种大范围、宽滞回带电压监控器的性能分析和改进

Performance analysis and improvement of a foreign potential CMU with long-range ordering and broad hysteresis band

分析进口电压监控器的电路性能 ,发现电压适应范围小、无过流保护、可视性低等设计缺陷及实际应用的局限性 .根据工厂实际供电情况 ,应用常用元件 ,对之进行了改进 ,提高了该产品对电源电压波动的适应性和运行稳定性 .根据进口电压监控器的电路及其实现 。

By analyzing the foreign potential CMU(Contro l Monitor Unit), the design defect and limitation such as the small scope of vol tage adaptation, lack of over current protection, and poor visualization are fou nd. According to the factual situation of power supply for domestic factories, t he CMU is improved with the use of conventional electronic devices. The suitabil ity to voltage pulsation is improved and the running stability is also enhanced. A new means used to better domestic under voltage relay is put forward on the basis of the foreign voltage control monitor unit.