目前使用的PZD2和PHD1S大站转换电源屏,常常会发生因断相转换电路故障而造成列车晚点的故障。为此,可以将断相转换电路进行改进,即把原来的断相转换中性点电路全部拆除,改装上3DXJ和4DXJ(型号为交流220VJJJC3110),把表示灯电路路串入1DXJ、2DXJ接点,路串入3DXJ和4DXJ接点... Currently used PZD2 and PHD1S conversion station power station, often occur due to phase failure of the conversion circuit failure caused by late train failure. To this end, the phase-cut conversion circuit can be improved, that is, the original phase-neutral conversion circuit all removed, modified on 3DXJ and 4DXJ (model 220VJJJC3110 AC), the light circuit into the series 1DXJ, 2DXJ contacts, Way into 3DXJ and 4DXJ contacts ...