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公司新聞媒體報道

如何有效应用電氣火災監控系統保护建筑安全

发布日期: 2025-07-04 訪問量：9615

电气火灾的主要诱因包括漏电、短路、过负荷以及接触电阻过大。短路时，由于电流剧烈变化，普通的电流保护器能够迅速作出反应，切断电气线路，从而避免火灾发生。然而，漏电和接触电阻过大所产生的故障电流往往微弱，不足以触发一般保护开关电器的动作。实验显示，仅略大于0.5A的漏电电弧就能产生高达2000℃的局部高温，这种高温环境存在极大的火灾隐患。

電氣火災監控系統主要包括電氣火災監控設備、剩余電流式電氣火災監控探測器，以及測溫式電氣火災監控探測器三大核心部件。其中，剩余電流式電氣火災監控探測器由監控探測器和剩余電流互感器共同構成，而測溫式電氣火災監控探測器則包含監控探測器和測溫傳感器。該系統能夠實時監測被保護電氣線路中的電流、剩余電流和溫度變化，從而及時發現潛在的電氣火災隱患，爲預防電氣火災提供有力保障。

電氣火災監控系統的监控原理主要基于实时监测电气线路中的电流、剩余电流和温度变化。通过剩余电流互感器和测温传感器等核心部件的协同作用，系统能够实时捕捉并分析这些关键参数的变化，进而判断电气线路是否存在潜在的火灾隐患。一旦发现异常，系统会立即启动报警机制，通知相关人员采取措施，从而有效预防电气火灾的发生。

電氣火災監控系統集成了监视、报警、控制和集中管理多项功能。其监控探测器通常挂接在总线支路上，接受主控制器的指令，并负责传输所有监测信息。主控制器负责处理接收到的数据，实时监测被探测电气线路的单相、三相电流、漏电电流以及温度等关键参数的变化。一旦这些参数出现异常，系统会立即启动报警机制。

具體來說，當參數超出設定範圍時，剩余電流互感器、溫度傳感器等終端探測頭會采集相關信息，並將其傳輸至監控探測器。一旦確認可能發生火災，監控主機將發出火災報警信號，同時激活報警指示燈和音響設備，並在液晶顯示屏上顯示詳細的報警信息。值班人員收到報警後，將迅速展開檢查和處理工作，確保火災隱患得到及時消除。此外，該系統還具備與消防火災監控設備及119火警指揮中心等外部機構的連接能力，以便在必要時獲取更多的支持和協助。

以剩余電流式電氣火災監控探測器爲例，其漏電監控報警功能主要通過安裝在配電線路上的剩余電流互感器實現。這種互感器具有高靈敏度，能夠檢測出微小的漏電流。在正常情況下，配電線路中的三相線和零線共同穿過互感器的鐵芯線圈時，其電流矢量和爲零，互感器不會感應出電流。然而，一旦發生漏電情況，任何一條相線或零線的一部分電流會分流到大地，導致互感器處電流矢量和不爲零，進而感應出相應的漏電電流。當檢測到的漏電電流達到或超過設定值時，電氣火災監控探測器將發出漏電報警，並切斷相應故障線路的電源，以防止火災事故的發生。

为了确保剩余电流式電氣火災監控系統的稳定运作，设计者在应用过程中需充分考虑电力配电系统的特性，并选择性能稳健、技术领先的产品。通过这些措施，可以有效降低各类场所的漏电火灾事故发生率。

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Mary said she would be satisfied with a shawl and a fan and anything else that was pretty. The countries might stay where they were, and there were doubtless a good many things in them that nobody would want anyway. All she wished was to have anything that was nice and pretty. Here is Frank's account of the wrestling as it appeared in the next letter he sent home: CHAPTER FOUR "What, the diamonds that have caused all this trouble to get. Never!" if one had perfect confidence in the probity of one's instructor. The report he got was that the amphibian was still flying. The scene grew every day more busy as the queen became more obviously failing. Harley, at Hanover, was plying the Elector and his family with reasons why the prince ought not to go to England. The Elector himself appeared quite of the same opinion; but not so the Electress or her son. 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