施耐德mt32h1断路器在一个配电室4路无辜全跳其他变电室开关正常,为什么

2025-04-07 19:07:08
推荐回答(1个)
回答1:

MT系列断路器2002年上市,如果是第一批上市的,那么已经使用了接近14年了。
可能有如下两种因素:
1、如果从MT断路器的运行上来分析,使用了10年以上的智能断路器(控制单元为单片机微处理器的半导体器件)都面临着控制单元长期带电工作造成的器件器质性老化导致的工作不稳定状态。
2、通常来说如果不加装外部工作电源的话,控制单元均采用自供电方式(靠断路器本身每相的电流互感器感应电)。而互感器感应的自供电电源受互感器性能的影响,如果处于20%以下负载的时候,感应的电源也是不稳定的。
以上两种不稳定导致控制单元出现误动作。这种误动作明显的经常发生在深夜或者凌晨这个时段(负荷最低的时段)。
如果再有其他较强的干扰因素,可能会对控制单元自身的工作造成更多不确定性。
以上供你参考。

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