描述

1762-L40BWA

当电容器喷油、爆炸着火时，应立即断开电源，并用砂子或干式灭火器灭火。此类事故多是由于系统内、外过电压，电容器内部严重故障所引起的。为了防止此类事故发生，要求单台熔断器熔丝规格必须匹配，熔断器熔丝熔断后要认真查找原因，电容器组不得使用重合闸，跳闸后不得强送电，以免造成更大损坏的事故。
电容器的断路器跳闸，而分路熔断器熔丝未熔断。应对电容器放电3min后，再检查断路器、电流互感器、电力电缆及电容器外部等情况。若未发现异常，则可能是由于外部故障或母线电压波动所致，并经检查正常后，可以试投，否则应进一步对保护做全面的通电试验。通过以上的检查、试验，若仍找不出原因，则应拆开电容器组，并逐台进行检查试验。但在未查明原因之前，不得试投运。
当电容器的熔断器熔丝熔断时，应向值班调度员汇报，待取得同意后，再断开电容器的断路器。在切断电源并对电容器放电后，先进行外部检查，如套管的外部有无闪络痕迹、外壳是否变形、漏油及接地装置有无短路等，然后用绝缘摇表摇测极间及极对地的绝缘电阻值。如未发现故障迹象，可换好熔断器熔丝后继续投入运行。如经送电后熔断器的熔丝仍熔断，则应退出故障电容器，并恢复对其余部分的送电运行。

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1762-L40BWA

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