高压开关柜断路器跳闸或熔断器熔断的故障原因是什么

2025-03-16 05:30:34
推荐回答(1个)
回答1:

断路器是高低压配电柜中重要的电气设备之一,如果断路器出现故障,会直接影响其他电气设备甚至整个配电柜的运行和使用,所以如果发生断路器误跳闸故障时,我们必须找到其原因,并及时作出处理,以保护其他电气设备和整个配电柜。
今天,山西配电柜厂家锦泰恒就给大家介绍一下,发生断路器误跳闸的故障时的原因及处理方法。

1.继电保护未动作,电网中无故造成的电流、电压波动,可判断为断路器操动机构误动作。
2.继电保护定值不正确或继电保护接线错误、电流互感器或电压互感器回路故障均可造成保护误动作,使断路器跳闸。
3.电网中无电流、电压波动现象,而直流系统绝缘监察装置动作,发出直流接地信号,可能为直流回路两点或多点接地所致。
4.当电网中有故障或操作时,如果是直流电源有如硅整流直流电源有时会出现电压波动、干扰、脉冲等现使晶体管保护误动作。
5.人为因素,如误碰等。
如果发现断路器误跳闸,可根据以上这些情况,及时判断出是何原因造成的误跳闸,然后设法排除造成误跳闸的原因,恢复断路器的运行,以保证配电柜的正常运行。

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