实测值 Measure value 报警显示Alarm display 当输入信号达到满量程的20%即7.2mA时，高报启动，机柜上相应位号的指示灯亮起，蜂鸣器响起。
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This article discusses design and implementation of the system software based on COM, including serial communication, data management, alarm show and the extension of network function because the platform of system software is Microsoft Windows.
因为雷电防护装置远程监测系统软件的运行平台为Microsoft Windows，所以本文主要基于COM技术，论述了系统软件中串口通讯、数据管理、报警显示及网络功能扩展几个模块的设计方法与具体实现。
参考来源 - 基于COM的雷电防护装置远程监测系统设计与实现·2,447,543篇论文数据，部分数据来源于NoteExpress
报警显示表应具有按优先级、单位或时间顺序显示的功能。
Functionality should provide for displaying alarm lists by priority, unit, or chronologically.
信号报警显示部分由零序电压检测、报警、显示等电路构成。
The latter makes use of zero sequence voltage detection, alarm and display circuit.
每台报警显示箱可反映15～20条电网支路的单相对地绝缘状态。
Each alarm kit displays the phase to ground insulation through 15-20 branches of the network.
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